EP0101553A2
Expired / Lapsed
EP
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Method and apparatus for converting oil feeds
Assignee: Ashland LLC
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Filing: 1983-07-06
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Granted: —
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Expires: 2003-07-06
Abstract
Abstract Novel riser reactor design with associated multiple feed inlet means for contacting regenerated catalyst particles with low quality naphtha, C. minus wet gas product of hydrocarbon conversion and a residual oil feed comprising components boiling above about 1025°F and comprising metal contaminants. Low quality naphtha from thermal cracking is charged either separately or in admixture with C. and lower boiling wet gas product of hydrocarbon conversion to the bottom portion of the riser conversion zone for contact with freshly regenerated zeolite cracking catalyst. The vaporous material thus charged conveys the regenerated catalyst at an acceptable velocity to an expanded section of the riser wherein residual oil is charged by a plurality of nozzle means penetrating the wall of the riser in the transition section to the expander user section. A suspension of hydrocarbon vapors and catalyst particles is then passed through the riser discharge for a desired contact time before separation by balistic separation with a cup about the riser upper to the riser end.
Inventors
- 👤 Lloyd E. Busch
- 👤 Charles W. Palmeter
- 👤 Gerald O. Henderson
- 👤 William M. Rice
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 14:24
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/14; C10G11/18; B; B01; B01J; B01J8/00; B01J8/08; B01J8/085
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
190 words
In a combination operation for upgrading crude oils and residual portions of crude oils comprising carbometallic impurities to produce gasoline and lower boiling components the improvement which comprises: A. forming a suspension of hot regenerated catalyst particles at a temperature in the range of 1300 to 1600°F in a wet gaseous product of catalytic conversion comprising C 5 and lower boiling components; B. contacting the suspension thus formed with a residual portion of crude oil admixed with sour water for a hydrocarbon residence time in a riser reaction zone for a time period in the range of 0.5 up to about 6 seconds and sufficient to provide vaporous products comprising substantial yields of gasoline boiling range components; C. initially separating said suspension with vaporous products by imparting a greater momentum to said catalyst particles than said hydrocarbon vapors; substantially enhancing the separation of hydrocarbon vapors from catalyst particles of greater momentum by establishing a confined region of reduced pressure adjacent a zone of hydrocarbon vapors separated from catalyst particles by momentum differential; and D. withdrawing hydrocarbon vapors from said confined region of reduced pressure free of substantial catalyst particle entrainment.
Claim 2
Dependent Claim
190 words
In a combination operation for upgrading crude oils and residual portions of crude oils comprising carbometallic impurities to produce gasoline and lower boiling components the improvement which comprises: A. forming a suspension of hot regenerated catalyst particles at a temperature in the range of 1300 to 1600°F in a wet gaseous product of catalytic conversion comprising C 5 and lower boiling components; B. contacting the suspension thus formed with a residual portion of crude oil admixed with sour water for a hydrocarbon residence time in a riser reaction zone for a time period in the range of 0.5 up to about 6 seconds and sufficient to provide vaporous products comprising substantial yields of gasoline boiling range components; C. initially separating said suspension with vaporous products by imparting a greater momentum to said catalyst particles than said hydrocarbon vapors; substantially enhancing the separation of hydrocarbon vapors from catalyst particles of greater momentum by establishing a confined region of reduced pressure adjacent a zone of hydrocarbon vapors separated from catalyst particles by momentum differential; and D. withdrawing hydrocarbon vapors from said confined region of reduced pressure free of substantial catalyst particle entrainment.
Claim 3
Dependent Claim
27 words
The method of claim 1 wherein said vaporous hydrocarbons are passed from said reduced region to a cyclone separation zone before recovery and separation into desired components.
Claim 4
Dependent Claim
27 words
The method of claim 1 wherein a low quality naphtha product initially contacts said catalyst for crystalline zeolite upgrading of said naphtha before contacting said residual oil.
Claim 5
Dependent Claim
30 words
The method of claim 1 wherein said cyclone separation zones are located within or outside a catalyst collecting and stripping zone about the upper end of said riser reaction zone.
Claim 6
Dependent Claim
35 words
The method of claim 1 wherein the residual oil feed admixed with sour water is charged to said riser reactor zone for discharge there above a transition section to a larger diameter riser reaction zone.
Claim 7
Dependent Claim
39 words
The method of claim 1 wherein the residual oil feed is charged to the riser below the discharge end thereof a distance sufficient to restrict the hydrocarbon residence time therein to within the range of 0.5 to 1.5 seconds.
Claim 8
Dependent Claim
48 words
The method of claim 1 wherein the residual oil feed charged to the riser reaction zone is by on "L" shaped nozzles provided with a plurality of separate open passageways in its discharge cross-section area and an inside wall portion of the nozzle wall adjacent its discharge end.
Claim 9
Dependent Claim
78 words
The method of claim 1 wherein the riser reaction zone is provided with a plurality of horizontally spaced apart "L" shaped nozzles penetrating the riser wall in one or more locations selected from a transition section increasing the riser diameter, substantially adjacent the bottom of the annular stripping zone through which the riser passes and in the upper portion of the riser reaction zone and above the upper limits of a catalyst bed entering the annular stripping zone.
Claim 10
Independent Claim
148 words
A method for selectively converting a residual oil portion of crude oil comprising metallo-organic compounds, sulfur and nitrogen which comprises; initially forming a suspension of hot regenerated zeolite containing hydrocarbon conversion catalyst with a normally gaseous hydrocarbon catalytic conversion product comprising water and hydrogen; contacting said catalyst suspension with a residual oil feed emulsified with a sour water overhead product of said residual oil conversion operation at a hydrocarbon conversion temperature and for a time in the range of 0.5 up to about 3 seconds in a riser contact zone; separating the suspension upon discharge from the riser contact zone by establishing a momentum differential between particles of catalyst and hydrocarbon vapors and providing a reduced pressure annular vapor withdrawal zone about a high momentum catalyst stream which attracts vaporous hydrocarbons to the substantial exclusion of catalyst particles, and separately recovering catalyst particles and hydrocarbon vapors thus separated.
Claim 11
Independent Claim
148 words
A method for selectively converting a residual oil portion of crude oil comprising metallo-organic compounds, sulfur and nitrogen which comprises; initially forming a suspension of hot regenerated zeolite containing hydrocarbon conversion catalyst with a normally gaseous hydrocarbon catalytic conversion product comprising water and hydrogen; contacting said catalyst suspension with a residual oil feed emulsified with a sour water overhead product of said residual oil conversion operation at a hydrocarbon conversion temperature and for a time in the range of 0.5 up to about 3 seconds in a riser contact zone; separating the suspension upon discharge from the riser contact zone by establishing a momentum differential between particles of catalyst and hydrocarbon vapors and providing a reduced pressure annular vapor withdrawal zone about a high momentum catalyst stream which attracts vaporous hydrocarbons to the substantial exclusion of catalyst particles, and separately recovering catalyst particles and hydrocarbon vapors thus separated.
References Cited (Backward Citations)
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