Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
118 words
A RELATIVELY LOW PRESSURE PROCESS FOR HYDROTREATING A STRAIGHT RUN NO. 2 HOME HEATING FUEL OIL FEED HAVING A TOTAL SULFUR CONTENT OF LESS THAN 0.2 WEIGHT PERCENT. COMPRISING PASSING SAID OIL OVER A HYDROTREATING CATALYST, SAID STRAIGHT RUN FEED OIL HAVING A TOTAL ACID NUMBER GREATER THAN 0.1 AS DETERMINED BY ASTM TEST D664 OR D974, THE PRESSURE IN SAID PROCESS BEING NO GREATER THAN ABOUT 150 PSI, THE TEMPERATURE IN SAID PROCESS BEING FROM 400* TO BELOW 500*F., HYDROGEN CONSUMPTION INCLUDING SOLUTION LOSSES IN SAID PROCESS BEING NO GREATER THAN ABOUT 25 STANDARD CUBIC FEET OF HYDROGEN PER BARREL OF FEED OIL, AND RECOVERING AN EFFLUENT OIL HAVING A TOTAL ACID NUMBER NO GREATER THAN 0.1.
Claim 2
Dependent Claim
118 words
A RELATIVELY LOW PRESSURE PROCESS FOR HYDROTREATING A STRAIGHT RUN NO. 2 HOME HEATING FUEL OIL FEED HAVING A TOTAL SULFUR CONTENT OF LESS THAN 0.2 WEIGHT PERCENT. COMPRISING PASSING SAID OIL OVER A HYDROTREATING CATALYST, SAID STRAIGHT RUN FEED OIL HAVING A TOTAL ACID NUMBER GREATER THAN 0.1 AS DETERMINED BY ASTM TEST D664 OR D974, THE PRESSURE IN SAID PROCESS BEING NO GREATER THAN ABOUT 150 PSI, THE TEMPERATURE IN SAID PROCESS BEING FROM 400* TO BELOW 500*F., HYDROGEN CONSUMPTION INCLUDING SOLUTION LOSSES IN SAID PROCESS BEING NO GREATER THAN ABOUT 25 STANDARD CUBIC FEET OF HYDROGEN PER BARREL OF FEED OIL, AND RECOVERING AN EFFLUENT OIL HAVING A TOTAL ACID NUMBER NO GREATER THAN 0.1.
Claim 3
Dependent Claim
20 words
The process of claim 1 wherein said hydrotreating catalyst previously has been used in a relatively high pressure hydrotreating process.
Claim 4
Dependent Claim
34 words
The process of claim 1 wherein said hydrotreating catalyst previously has been used in a relatively high pressure hydrotreating process until it has been substantially permanently deactivated for purposes of said high pressure process.
Claim 5
Dependent Claim
38 words
The process of claim 1 wherein the total acid number of the feed oil is reduced at least about 80 percent while the total sulfur content of the feed oil is reduced not more than 40 weight percent.
Claim 6
Dependent Claim
25 words
The process of claim 1 wherein the catalyst comprises supported Group VI and Group VIII metals and the pressure is no greater than 100 psi.
Claim 7
Dependent Claim
11 words
The process of claim 1 wherein the temperature is below 450.degree.F.
Claim 8
Dependent Claim
13 words
The process of claim 1 wherein the LHSV is between 4 and 8.
Claim 9
Dependent Claim
40 words
The process of claim 1 wherein the total acid number of the feed oil is reduced at least about 80 percent while not more than about 20 weight percent of the total sulfur content of the feed oil is removed.
Claim 10
Dependent Claim
24 words
The process of claim 2 wherein the prior relatively high pressure hydrotreating process is a hydrodesulfurization process operated at a pressure above 600 psi.
Claim 11
Dependent Claim
24 words
The process of claim 1 wherein chemical hydrogen consumption excluding solution losses is less than 10 standard cubic feet per barrel of feed oil.
Claim 12
Dependent Claim
23 words
The process of claim 1 wherein hydrogen consumption including solution losses is less than 20 standard cubic feet per barrel of feed oil.
Claim 13
Dependent Claim
23 words
The process of claim 1 wherein the hydrogen circulation rate is between 200 and 1,200 standard cubic feet per barrel of feed oil.
Claim 14
Dependent Claim
19 words
The process of claim 1 wherein the total acid number of said feed oil is above 0.47 or more.
Claim 15
Dependent Claim
16 words
The process of claim 1 wherein there is substantially 100 percent yield of said feed oil.
Claim 16
Dependent Claim
145 words
A relatively low pressure process for hydrotreating a straight run No. 2 home heating fuel oil feed having a total sulfur content of less than 0.2 weight percent, comprising passing said oil over a hydrotreating catalyst which has been used in a prior relatively high pressure hydrotreating process until it has been substantially permanently deactivated for purposes of said high pressure process, said straight run feed oil having a total acid number greater than 0.2 as determined by ASTM test D664 or D974, the pressure in said process being no greater than about 150 psi, the temperature in said process being from 400.degree. to below 500.degree.F., unit hydrogen consumption including solution losses in said process being no greater than about 30 standard cubic feet of hydrogen per barrel of feed oil, and recovering an effluent oil having a total acid number no greater than 0.2.
Claim 17
Dependent Claim
145 words
A relatively low pressure process for hydrotreating a straight run No. 2 home heating fuel oil feed having a total sulfur content of less than 0.2 weight percent, comprising passing said oil over a hydrotreating catalyst which has been used in a prior relatively high pressure hydrotreating process until it has been substantially permanently deactivated for purposes of said high pressure process, said straight run feed oil having a total acid number greater than 0.2 as determined by ASTM test D664 or D974, the pressure in said process being no greater than about 150 psi, the temperature in said process being from 400.degree. to below 500.degree.F., unit hydrogen consumption including solution losses in said process being no greater than about 30 standard cubic feet of hydrogen per barrel of feed oil, and recovering an effluent oil having a total acid number no greater than 0.2.