US4600497A — Process for treating waxy shale oils

Claim 1

Independent Claim 155 words

A process for treating a waxy shale oil feedstock containing organonitrogen compounds and components boiling above about 670° F., which process comprises contacting said feedstock with a catalyst comprising a Group VIB metal component and a Group VIII metal component on a support comprising an intimate admixture of a porous refractory oxide and a crystalline zeolite having a crystal density not less than 1.6 grams per cubic centimeter, a silica-to-alumina ratio of at least 12, and a constraint index within the range of 1 to 12 at an elevated pressure and an elevated temperature less than about 800° F. and in the presence of hydrogen so as to convert less than about 25 percent of said components boiling above about 670° F. to components boiling below 670° F. and yield a product of reduced pour point and reduced organonitrogen content in comparison to said feedstock, with the reduction in organonitrogen content being over 75 percent.

Claim 2

Dependent Claim 155 words

A process for treating a waxy shale oil feedstock containing organonitrogen compounds and components boiling above about 670° F., which process comprises contacting said feedstock with a catalyst comprising a Group VIB metal component and a Group VIII metal component on a support comprising an intimate admixture of a porous refractory oxide and a crystalline zeolite having a crystal density not less than 1.6 grams per cubic centimeter, a silica-to-alumina ratio of at least 12, and a constraint index within the range of 1 to 12 at an elevated pressure and an elevated temperature less than about 800° F. and in the presence of hydrogen so as to convert less than about 25 percent of said components boiling above about 670° F. to components boiling below 670° F. and yield a product of reduced pour point and reduced organonitrogen content in comparison to said feedstock, with the reduction in organonitrogen content being over 75 percent.

Claim 3

Dependent Claim 41 words

A process as defined in claim 1 wherein said waxy shale oil feedstock contains constituents boiling above about 750° F. but less than about 50% of said constituents, by volume, are converted during said contacting to constituents boiling below 750° F.

Claim 4

Dependent Claim 55 words

A process as defined in claim 1 wherein said feedstock contains a Jet A turbine fuel fraction boiling between 300° and 520° F., which fraction has a freeze point above -40° F., but the Jet A turbine fuel fraction of said product, as a result of said contacting, has a freeze point below -40° F.

Claim 5

Dependent Claim 56 words

A process as defined in claim 1 wherein said feedstock contains a JP-4 turbine fuel fraction consisting of constituents boiling at temperatures less than 470° F., which JP-4 fraction has a freeze point above -72° F., but the JP-4 fraction of said product, as a result of said contacting, has a freeze point below -72° F.

Claim 6

Dependent Claim 60 words

A process as defined in claim 1 wherein said feedstock contains a diesel fraction boiling between 300° and 670° F., which diesel fraction has a pour point greater than +5° F., but the diesel fuel fraction boiling between 300° and 670° F. of said product, as a result of said contacting, has a pour point no greater than +5° F.

Claim 7

Dependent Claim 33 words

A process as defined in claim 1 wherein said feedstock also contains organosulfur components and, as a result of said contacting, said product contains a reduced organosulfur content in comparison to said feedstock.

Claim 8

Dependent Claim 36 words

A process as defined in claim 1, 2, 3, 4, 5, or 6 wherein said zeolite is selected from the group consisting of ZSM-5, ZSM-11, ZSM-12, ZSM-23, ZSM-35, and ZSM-38, and said refractory oxide contains alumina.

Claim 9

Dependent Claim 19 words

A process as defined in claim 1 wherein said contacting is at a temperature less than about 750° F.

Claim 10

Dependent Claim 36 words

A process as defined in claim 1 wherein said feedstock contains organonitrogen components in a concentration above about 1.5 wt.%, calculated as nitrogen, and said product contains organonitrogen components in a concentration below about 400 wppm.

Claim 11

Dependent Claim 53 words

A process as defined in claim 1 wherein said feedstock contains organonitrogen components in a concentration above about 1.4 wt.%, calculated as nitrogen, and organosulfur components in a concentration above about 0.2 wt.%, calculated as sulfur, and said product contains less than 400 wppm organonitrogen components and less than 25 wppm organosulfur components.

Claim 12

Dependent Claim 33 words

A process as defined in claim 1, 2, 9, or 10 wherein said feedstock has a pour point above about 50° F. and said pour point of the product is below 30° F.

Claim 13

Dependent Claim 32 words

A process as defined in claim 1, 2, or 10 wherein said feedstock has a pour point above about 70° F. and said pour point of said product is below 30° F.

Claim 14

Dependent Claim 59 words

A process as defined in claim 1, 2, 3, 4, 5, or 10 wherein said catalyst comprises nickel components as the Group VIII metal component and tungsten components as the Group VIP metal component, said catalyst containing more nickel than could be contained in the ion exchange sites of said zeolite, with said zeolite being in an acidic form.

Claim 15

Dependent Claim 53 words

A process as defined in claim 12 wherein said catalyst comprises nickel components as the Group VIII metal component and tungsten components as the Group VIB metal component, said catalyst containing more nickel than could be contained in the ion exchange sites of said zeolite, with said zeolite being in an acidic form.

Claim 16

Dependent Claim 29 words

A process as defined in claim 1 wherein said catalyst contains more of said Group VIII metal than could be contained in the ion exchange sites of said zeolite.

Claim 17

Dependent Claim 38 words

A process as defined in claim 15 wherein said catalyst contains at least 0.5 wt.% of Group VIII metal components, calculated as the monoxides, and at least 5 wt.% of Group VIB metal components, calculated as the trioxides.

Claim 18

Dependent Claim 254 words

A process for upgrading a waxy hydrocarbon feedstock derived from shale oil, said feedstock containing organonitrogen components, organosulfur components, and components boiling above about 670° F. and having a pour point above about 50° F., which process comprises: (1) hydrotreating said feedstock by contact with a sulfided catalyst comprising a Group VIII metal component and a Group VIB metal component on a porous refractory oxide support in the presence of hydrogen and under conditions reducing the organonitrogen content and the organosulfur content of the shale oil feedstock while increasing the pour point thereof; (2) contacting at an elevated temperature below about 800° F. the entire effluent from step (1) with a catalyst comprising a Group VIII metal component and a Group VIB metal component on a support comprising a porous refractory oxide in intimate admixture with a crystalline aluminosilicate zeolite having a crystal density not less than 1.6 grams per cubic centimeter, a silica-to-alumina ratio of at least 12, and a constraint index within the range of 1 to 12 in the presence of hydrogen and under conditions, wherein less than about 25 percent by volume of said components boiling above about 670° F. are converted to components boiling below about 670° F., further reducing the organosulfur content and further reducing the organonitrogen content by over 75 percent while decreasing the pour point below 30° F.; and (3) recovering a product hydrocarbon having a pour point below 30° F. and containing a decreased concentration of organonitrogen and organosulfur components in comparison to said feedstock.

Claim 19

Dependent Claim 254 words

A process for upgrading a waxy hydrocarbon feedstock derived from shale oil, said feedstock containing organonitrogen components, organosulfur components, and components boiling above about 670° F. and having a pour point above about 50° F., which process comprises: (1) hydrotreating said feedstock by contact with a sulfided catalyst comprising a Group VIII metal component and a Group VIB metal component on a porous refractory oxide support in the presence of hydrogen and under conditions reducing the organonitrogen content and the organosulfur content of the shale oil feedstock while increasing the pour point thereof; (2) contacting at an elevated temperature below about 800° F. the entire effluent from step (1) with a catalyst comprising a Group VIII metal component and a Group VIB metal component on a support comprising a porous refractory oxide in intimate admixture with a crystalline aluminosilicate zeolite having a crystal density not less than 1.6 grams per cubic centimeter, a silica-to-alumina ratio of at least 12, and a constraint index within the range of 1 to 12 in the presence of hydrogen and under conditions, wherein less than about 25 percent by volume of said components boiling above about 670° F. are converted to components boiling below about 670° F., further reducing the organosulfur content and further reducing the organonitrogen content by over 75 percent while decreasing the pour point below 30° F.; and (3) recovering a product hydrocarbon having a pour point below 30° F. and containing a decreased concentration of organonitrogen and organosulfur components in comparison to said feedstock.

Claim 20

Dependent Claim 53 words

A process as defined in claim 17 wherein said feedstock contains more than about 0.2 wt.% organosulfur compounds, calculated as sulfur, and more than about 1.5 wt.% organonitrogen compounds, calculated as nitrogen, and said product hydrocarbon in step (3) contains less than 400 wppm organonitrogen compounds and less than 25 wppm organosulfur compounds.

Claim 21

Dependent Claim 19 words

A process as defined in claim 17 wherein said catalyst in step (2) comprises ZSM-5 in an acidic form.

Claim 22

Dependent Claim 58 words

A process as defined in claim 19 wherein said catalyst in step (2) is sulfided and contains nickel components as the Group VIII metal component and tungsten components as the Group VIB metal component, said nickel being present in an amount in the catalyst above that required to fully occupy all the ion exchange sites of the zeolite.

Claim 23

Dependent Claim 31 words

A process as defined in claim 20 wherein the organonitrogen content of said product hydrocarbon is less than 200 wppm while that of said feedstock is above about 1.5 weight percent.

Claim 24

Dependent Claim 31 words

A process as defined in claim 17, 18, 19, 20, or 21 wherein the contacting in step (2) is controlled to further reduce the organosulfur content by at least 50 percent.

Claim 25

Dependent Claim 17 words

A process as defined in claim 21 wherein said feedstock is a deashed and dearsenated shale oil.

Claim 26

Dependent Claim 26 words

A process as defined in claim 23 wherein the pour point of the liquid phase of the entire effluent in step (2) is above 70° F.

Claim 27

Dependent Claim 42 words

A process as defined in claim 20 wherein said entire effluent contains constituents boiling above about 750° F. but less than about 50% of said constituents, by volume, are converted during said contacting in step (2) to constituents boiling below 750° F.

Claim 28

Dependent Claim 50 words

A process as defined in claim 20 wherein said feedstock contains a Jet A turbine fuel fraction boiling between 300° and 520° F., which fraction has a freeze point above -40° F., but the Jet A turbine fuel fraction of said product hydrocarbon has a freeze point below -40° F.

Claim 29

Dependent Claim 51 words

A process as defined in claim 20 wherein said feedstock contains a JP-4 turbine fuel fraction consisting of constituents boiling at temperatures less than 470° F., which JP-4 fraction has a freeze point above -72° F., but the JP-4 fraction of said product hydrocarbon has a freeze point below -72° F.

Claim 30

Dependent Claim 55 words

A process as defined in claim 20 wherein said feedstock contains a diesel fraction boiling between 300° and 670° F., which diesel fraction has a pour point greater than +5° F., but the diesel fuel fraction boiling between 300° and 670° F. of said product hydrocarbon has a pour point no greater than +5° F.

Claim 31

Dependent Claim 256 words

A process for upgrading a waxy hydrocarbon feedstock derived from shale oil, said feedstock containing organonitrogen components, organosulfur components, and components boiling above about 670° F. and having a relatively high pour point, which process comprises: (1) hydrotreating said feedstock by contact with a sulfided catalyst comprising a Group VIII metal component and a Group VIB metal component on a porous refractory oxide support in the presence of hydrogen and under conditions reducing the organonitrogen content and the organosulfur content of the shale oil feedstock while increasing the pour point thereof; (2) contacting at an elevated temperature below about 800° F. the entire effluent from step (1) with a catalyst comprising a Group VIII metal component and a Group VIB metal component on a support comprising a porous refractory oxide in intimate admixture with a crystalline aluminosilicate zeolite having a crystal density not less than 1.6 grams per cubic centimeter, a silica-to-alumina ratio of at least 12, and a constraint index within the range of 1 to 12 in the presence of hydrogen and under conditions, wherein less than about 25 percent by volume of said components boiling above about 670° F. are converted to components boiling below about 670° F., further reducing the organosulfur content and further reducing the organonitrogen content by over 75 percent while decreasing the pour point below that of said feedstock introduced into step (1); and (3) recovering a product hydrocarbon having a reduced pour point and containing a decreased concentration of organonitrogen and organosulfur components in comparison to said feedstock.

Claim 32

Dependent Claim 256 words

A process for upgrading a waxy hydrocarbon feedstock derived from shale oil, said feedstock containing organonitrogen components, organosulfur components, and components boiling above about 670° F. and having a relatively high pour point, which process comprises: (1) hydrotreating said feedstock by contact with a sulfided catalyst comprising a Group VIII metal component and a Group VIB metal component on a porous refractory oxide support in the presence of hydrogen and under conditions reducing the organonitrogen content and the organosulfur content of the shale oil feedstock while increasing the pour point thereof; (2) contacting at an elevated temperature below about 800° F. the entire effluent from step (1) with a catalyst comprising a Group VIII metal component and a Group VIB metal component on a support comprising a porous refractory oxide in intimate admixture with a crystalline aluminosilicate zeolite having a crystal density not less than 1.6 grams per cubic centimeter, a silica-to-alumina ratio of at least 12, and a constraint index within the range of 1 to 12 in the presence of hydrogen and under conditions, wherein less than about 25 percent by volume of said components boiling above about 670° F. are converted to components boiling below about 670° F., further reducing the organosulfur content and further reducing the organonitrogen content by over 75 percent while decreasing the pour point below that of said feedstock introduced into step (1); and (3) recovering a product hydrocarbon having a reduced pour point and containing a decreased concentration of organonitrogen and organosulfur components in comparison to said feedstock.

Claim 33

Dependent Claim 42 words

A process as defined in claim 29 wherein said entire effluent contains constituents boiling above about 750° F. but less than about 50% of said constituents, by volume, are converted during said contacting in step (2) to constituents boiling below 750° F.

Claim 34

Dependent Claim 160 words

A process for treating a waxy shale oil feedstock containing components boiling above about 670° F. and organonitrogen components in a concentration of at least 400 wppm, which process comprises contacting said feedstock with a catalyst comprising a Group VIB metal component and a Group VIII metal component on a support comprising an intimate admixture of a porous refractory oxide and a crystalline zeolite having a crystal density not less than 1.6 grams per cubic centimeter, a silica-to-alumina ratio of at least 12, and a constraint index within the range of 1 to 12 at an elevated pressure and an elevated temperature less than about 800° F. and in the presence of hydrogen so as to convert less than about 25 percent by volume of said components boiling above about 670° F. to components boiling below about 670° F. and yield a product of reduced pour point in comparison to said feedstock and of organonitrogen concentration less than 200 wppm.

Claim 35

Dependent Claim 160 words

A process for treating a waxy shale oil feedstock containing components boiling above about 670° F. and organonitrogen components in a concentration of at least 400 wppm, which process comprises contacting said feedstock with a catalyst comprising a Group VIB metal component and a Group VIII metal component on a support comprising an intimate admixture of a porous refractory oxide and a crystalline zeolite having a crystal density not less than 1.6 grams per cubic centimeter, a silica-to-alumina ratio of at least 12, and a constraint index within the range of 1 to 12 at an elevated pressure and an elevated temperature less than about 800° F. and in the presence of hydrogen so as to convert less than about 25 percent by volume of said components boiling above about 670° F. to components boiling below about 670° F. and yield a product of reduced pour point in comparison to said feedstock and of organonitrogen concentration less than 200 wppm.

Claim 36

Dependent Claim 19 words

A process as defined in claim 31 wherein the organonitrogen concentration of said feedstock is at least 450 wppm.

Claim 37

Dependent Claim 19 words

A process as defined in claim 32 wherein the organonitrogen concentration of said feedstock is less than 1000 wppm.

Claim 38

Dependent Claim 19 words

A process as defined in claim 31 wherein the organonitrogen concentration of said feedstock is less than 1000 wppm.

Claim 39

Dependent Claim 40 words

A process as defined in claim 31 wherein said waxy shale oil feedstock contains constituents boiling above about 750° F. but less than 50% of said constituents, by volume, are converted during said contacting to constituents boiling below 750° F.

Claim 40

Dependent Claim 15 words

A process as defined in claim 31, 33, or 35 wherein said zeolite is ZSM-5.

Claim 41

Dependent Claim 19 words

A process as defined in claim 31 wherein said contacting is at a temperature less than about 750° F.

Claim 42

Dependent Claim 31 words

A process as defined in claim 31 or 35 wherein said feedstock has a pour point above about 50° F. and said pour point of the product is below 30° F.

Claim 43

Dependent Claim 36 words

A process as defined in claim 32 or 35 wherein said feedstock has a pour point above about 70° F. and said pour point of said product is below 30° F. and said zeolite is ZSM-5.

Claim 44

Dependent Claim 57 words

A process as defined in claim 31, 33, or 34 wherein said catalyst comprises nickel components as the Group VIII metal component and tungsten components as the Group VIB metal component, said catalyst containing more nickel than could be contained in the ion exchange sites of said zeolite, with said zeolite being ZSM-5 in an acidic form.

Claim 45

Dependent Claim 28 words

A process as defined in claim 1, 31, 35, or 37 wherein said feedstock also contains organosulfur components which, during said contacting, are reduced by over 50 percent.

Claim 46

Dependent Claim 29 words

A process as defined in claim 41 wherein said feedstock has a pour point above about 50° F. and said pour point of said product is below 30° F.

Claim 47

Dependent Claim 29 words

A process as defined in claim 2, 8, 9, 32, or 34 wherein said feedstock also contains organosulfur components which, during said contacting, are reduced by over 50 percent.

Claim 48

Dependent Claim 77 words

A process as defined in claim 43 wherein said catalyst comprises nickel components as the Group VIII metal component and tungsten components as the Group VIB metal component, said catalyst containing more nickel than could be contained in the ion exchange sites of said zeolite, with said zeolite being ZSM-5 in an acidic form, and wherein said pour point of said feedstock is above 70° F. and said pour point of said product is below 30° F.

Claim 49

Dependent Claim 143 words

A process for treating a waxy shale oil feedstock containing components boiling above about 670° F. and organonitrogen compounds, which process comprises contacting said feedstock with a catalyst comprising a Group VIB metal component and a Group VIII metal component on a support comprising an intimate admixture of a porous refractory oxide and 2 to 90 percent by weight of a crystalline aluminosilicate zeolite which readily adsorbs n-hexane but not 2,2-dimethylbutane at an elevated pressure and an elevated temperature less than about 800° F. and in the presence of hydrogen so as to convert less than about 25 percent by volume of said components boiling above about 670° F. to components boiling below about 670° F. and yield a product of reduced pour point and reduced organonitrogen content in comparison to said feedstock, with the reduction in organonitrogen content being over 75 percent.

Claim 50

Dependent Claim 143 words

A process for treating a waxy shale oil feedstock containing components boiling above about 670° F. and organonitrogen compounds, which process comprises contacting said feedstock with a catalyst comprising a Group VIB metal component and a Group VIII metal component on a support comprising an intimate admixture of a porous refractory oxide and 2 to 90 percent by weight of a crystalline aluminosilicate zeolite which readily adsorbs n-hexane but not 2,2-dimethylbutane at an elevated pressure and an elevated temperature less than about 800° F. and in the presence of hydrogen so as to convert less than about 25 percent by volume of said components boiling above about 670° F. to components boiling below about 670° F. and yield a product of reduced pour point and reduced organonitrogen content in comparison to said feedstock, with the reduction in organonitrogen content being over 75 percent.

Claim 51

Dependent Claim 41 words

A process as defined in claim 45 wherein said waxy shale oil feedstock contains constituents boiling above about 750° F. but less than about 50% of said constituents, by volume, are converted during said contacting to constituents boiling below 750° F.

Claim 52

Dependent Claim 145 words

A process for treating a waxy shale oil feedstock containing components boiling above about 670° F. and organonitrogen components in a concentration of at least 400 wppm, which process comprises contacting said feedstock with a catalyst comprising a Group VIB metal component and a Group VIII metal component on a support comprising an intimate admixture of a porous refractory oxide and 2 to 90 percent by weight of a crystalline aluminosilicate zeolite which readily adsorbs benzene but not metaxylene at an elevated pressure and an elevated temperature less than about 800° F. and in the presence of hydrogen so as to convert less than about 25 percent by volume of said components boiling above about 670° F. to components boiling below about 670° F., and yield a product of reduced pour point in comparison to said feedstock and of organonitrogen concentration less than 200 wppm.

Claim 53

Dependent Claim 145 words

A process for treating a waxy shale oil feedstock containing components boiling above about 670° F. and organonitrogen components in a concentration of at least 400 wppm, which process comprises contacting said feedstock with a catalyst comprising a Group VIB metal component and a Group VIII metal component on a support comprising an intimate admixture of a porous refractory oxide and 2 to 90 percent by weight of a crystalline aluminosilicate zeolite which readily adsorbs benzene but not metaxylene at an elevated pressure and an elevated temperature less than about 800° F. and in the presence of hydrogen so as to convert less than about 25 percent by volume of said components boiling above about 670° F. to components boiling below about 670° F., and yield a product of reduced pour point in comparison to said feedstock and of organonitrogen concentration less than 200 wppm.

Claim 54

Dependent Claim 41 words

A process as defined in claim 47 wherein said waxy shale oil feedstock contains constituents boiling above about 750° F. but less than about 50% of said constituents, by volume, are converted during said contacting to constituents boiling below 750° F.

Claim 55

Dependent Claim 27 words

A process as defined in claim 45, 46, 47, or 48 wherein said feedstock contains organosulfur components which, during said contacting, are reduced by over 50 percent.

Claim 56

Dependent Claim 29 words

A process as defined in claim 49 wherein said feedstock has a pour point above about 50° F. and said pour point of said product is below 30° F.

Claim 57

Dependent Claim 32 words

A process as defined in claim 45, 46, 47, or 48 wherein said feedstock has a pour point above 70° F. and said pour point of said product is below 30° F.

Claim 58

Dependent Claim 128 words

A process for treating a waxy shale oil feedstock containing components boiling above about 670° F. and organonitrogen compounds, which process comprises contacting said feedstock with a catalyst comprising a Group VIB metal component and a Group VIII metal component on a support comprising an intimate admixture of a porous refractory oxide and a ZSM-5 zeolite at an elevated pressure and an elevated temperature less than about 800° F. and in the presence of hydrogen so as to convert less than about 25 percent by volume of said components boiling above about 670° F. to components boiling below about 670° F., and yield a product of reduced pour point and reduced organonitrogen content in comparison to said feedstock, with the reduction in organonitrogen content being over 75 percent.

Claim 59

Dependent Claim 128 words

A process for treating a waxy shale oil feedstock containing components boiling above about 670° F. and organonitrogen compounds, which process comprises contacting said feedstock with a catalyst comprising a Group VIB metal component and a Group VIII metal component on a support comprising an intimate admixture of a porous refractory oxide and a ZSM-5 zeolite at an elevated pressure and an elevated temperature less than about 800° F. and in the presence of hydrogen so as to convert less than about 25 percent by volume of said components boiling above about 670° F. to components boiling below about 670° F., and yield a product of reduced pour point and reduced organonitrogen content in comparison to said feedstock, with the reduction in organonitrogen content being over 75 percent.

Claim 60

Dependent Claim 41 words

A process as defined in claim 52 wherein said waxy shale oil feedstock contains constituents boiling above about 750° F. but less than about 50% of said constituents, by volume, are converted during said contacting to constituents boiling below 750° F.

Claim 61

Dependent Claim 19 words

A process as defined in claim 52 wherein said contacting is at a temperature less than about 750° F.

Claim 62

Dependent Claim 41 words

A process as defined in claim 19, 25, 29, 30, or 52 wherein said feedstock contains organonitrogen components in a concentration above about 1.5 wt.%, calculated as nitrogen, and said product contains organonitrogen components in a concentration below about 400 wppm.

Claim 63

Dependent Claim 53 words

A process as defined in claim 52 wherein said feedstock contains organonitrogen components in a concentration above about 1.4 wt.%, calculated as nitrogen, and organosulfur components in a concentration above about 0.2 wt.%, calculated as sulfur, and said product contains less than 400 wppm organonitrogen components and less than 25 wppm organosulfur components.

Claim 64

Dependent Claim 32 words

A process as defined in claim 52, 53, or 54 wherein said feedstock has a pour point above about 50° F. and said pour point of the product is below 30° F.

Claim 65

Dependent Claim 31 words

A process as defined in claim 52 or 56 wherein said feedstock has a pour point above about 70° F. and said pour point of said product is below 30° F.

Claim 66

Dependent Claim 37 words

A process as defined in claim 52 wherein said feedstock also contains organosulfur components and, as a result of said contacting, said product contains a reduced organosulfur content in comparison to said feedstock by over 50 percent.

Claim 67

Dependent Claim 37 words

A process as defined in claim 57 wherein said feedstock also contains organosulfur components and, as a result of said contacting, said product contains a reduced organosulfur content in comparison to said feedstock by over 50 percent.

Claim 68

Dependent Claim 174 words

A process for treating a waxy shale oil feedstock containing components boiling above about 670° F. and organonitrogen compounds, which process comprises contacting said feedstock with a catalyst comprising between about 5 and 40 weight percent of a Group VIB metal component, calculated as the metal trioxide, and between 0.5 and 15 weight percent of a Group VIII metal component, calculated as the metal monoxide, on a support comprising an intimate admixture of a porous refractory oxide and a crystalline aluminosilicate zeolite having an effective pore diameter greater than 5 angstroms and a crystalline density of not less than 1.6 grams per cubic centimeter at an elevated pressure and an elevated temperature less than about 800° F. and in the presence of hydrogen so as to convert less than 25 percent by volume of the components boiling above about 670° F. into components boiling below about 670° F. and yield a product of reduced pour point and organonitrogen content in comparison to said feedstock, with the reduction in organonitrogen content being over 75 percent.

Claim 69

Dependent Claim 174 words

A process for treating a waxy shale oil feedstock containing components boiling above about 670° F. and organonitrogen compounds, which process comprises contacting said feedstock with a catalyst comprising between about 5 and 40 weight percent of a Group VIB metal component, calculated as the metal trioxide, and between 0.5 and 15 weight percent of a Group VIII metal component, calculated as the metal monoxide, on a support comprising an intimate admixture of a porous refractory oxide and a crystalline aluminosilicate zeolite having an effective pore diameter greater than 5 angstroms and a crystalline density of not less than 1.6 grams per cubic centimeter at an elevated pressure and an elevated temperature less than about 800° F. and in the presence of hydrogen so as to convert less than 25 percent by volume of the components boiling above about 670° F. into components boiling below about 670° F. and yield a product of reduced pour point and organonitrogen content in comparison to said feedstock, with the reduction in organonitrogen content being over 75 percent.

Claim 70

Dependent Claim 42 words

A process as defined in claim 61 wherein said waxy shale oil feedstock contains constituents boiling above about 750° F. but less than about 50 percent of said constituents, by volume, are converted during said contacting to constituents boiling below 750° F.

Claim 71

Dependent Claim 29 words

A process as defined in claim 62 wherein said feedstock has a pour point above about 50° F. and said pour point of the product is below 30° F.

Claim 72

Dependent Claim 27 words

A process as defined in claim 61, 62, or 63 wherein said feedstock also contains organosulfur components which, during said contacting, are reduced by over 50 percent.

Claim 73

Dependent Claim 25 words

A process as defined in claim 64 wherein said Group VIB metal component comprises tungsten components and said Group VIII metal component comprises nickel components.

Claim 74

Dependent Claim 41 words

A process as defined in claim 61 wherein said Group VIB metal component is selected from the group consisting of tungsten and molybdenum components and said Group VIII metal component is selected from the group consisting of nickel and cobalt components.

Claim 75

Dependent Claim 50 words

A process as defined in claim 25, 29, or 30 wherein said contacting in step (2) is at a temperature below 750° F., said feedstock contains organonitrogen components in a concentration above about 1.4 weight percent, calculated as nitrogen, and said product hydrocarbon contains less than 400 wppm organonitrogen components.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1989-07-14	1990-01-13	1990-07-15	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1993-07-14	1994-01-13	1994-07-15	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1997-07-14	1998-01-13	1998-07-15	$7700.00	Window Closed / Lapsed

Process for treating waxy shale oils

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