US3839191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocracking of coal liquids
Assignee: Total Energy Corp
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Filing: 1970-07-28
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Granted: 1974-10-01
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Expires: 1990-07-28
Abstract
Abstract A method wherein a catalyst used in a continuous hydrocracking process is successively passed through primary and secondary reaction zones and is passed through a wash zone whereby the catalyst is washed with hot water to remove catalyst poisons collected in the reaction zones. The washed catalyst is then passed through a regeneration zone wherein adhered coke particles are burned off of the catalyst. The catalyst is then recirculated and again fed through the reaction zones.
Inventors
- 👤 C Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:00
CPC Classifications
C; C10; C10G; C10G65/00; C10G65/02; C10G65/10; C10G47/00; C10G47/24; C10G47/28
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
144 words
A METHOD FOR CONTINOUSLY HYDROCRACKING COAL LIQUIDS COMPRISING THE STEPS OF FORMING A CONTINOUSLY DOWNWARDLY MOVING CATALYST BED, CREATING A PRIMARY REACTION ZONE, A SECONDARY REACTION ZONE, A WASH ZONE AND A REGENERATION ZONE IN TANDEM ARRANGEMENT, PASSING SAID CONTINOUSLY MOVING CATALYST BED THROUGH SAID PRIMARY AND SECONDARY ZONES, FEEDING COAL LIQUIDS AND HYDROGEN GAS INTO THE BOTTOM OF SAID SECOND REACTION ZONE AND UPWARDLY THROUGH AND COUNTERCURRENT TO AID CATALYST BED AND THROUGH SAID PRIMARY REACTION ZONE, TAKING OFF HYDROCRACKED COAL LIQUIDS FROM SAID PRIMARY REACTION ZONE, PASSING SAID CATASLYST BED THROUGH SAID WASH ZONE, INJECTING HOT WATER INTO SAID WASH ZONE TO ASH SAID CATALYST AND TO TAKE OFF COAL LIQUID CARRIED BY AND ADHERED TO SAID CATALYST BED FROM SAID PRIMARY AND SECONDATRY ZONES, PASSING SAID CATALYST BED THROUGH SAID REGENERATION ZONE AND BURNING OFF CARBONACEOUS PARTICLES ADHERED TO AID CATALYST.
Claim 2
Independent Claim
144 words
A METHOD FOR CONTINOUSLY HYDROCRACKING COAL LIQUIDS COMPRISING THE STEPS OF FORMING A CONTINOUSLY DOWNWARDLY MOVING CATALYST BED, CREATING A PRIMARY REACTION ZONE, A SECONDARY REACTION ZONE, A WASH ZONE AND A REGENERATION ZONE IN TANDEM ARRANGEMENT, PASSING SAID CONTINOUSLY MOVING CATALYST BED THROUGH SAID PRIMARY AND SECONDARY ZONES, FEEDING COAL LIQUIDS AND HYDROGEN GAS INTO THE BOTTOM OF SAID SECOND REACTION ZONE AND UPWARDLY THROUGH AND COUNTERCURRENT TO AID CATALYST BED AND THROUGH SAID PRIMARY REACTION ZONE, TAKING OFF HYDROCRACKED COAL LIQUIDS FROM SAID PRIMARY REACTION ZONE, PASSING SAID CATASLYST BED THROUGH SAID WASH ZONE, INJECTING HOT WATER INTO SAID WASH ZONE TO ASH SAID CATALYST AND TO TAKE OFF COAL LIQUID CARRIED BY AND ADHERED TO SAID CATALYST BED FROM SAID PRIMARY AND SECONDATRY ZONES, PASSING SAID CATALYST BED THROUGH SAID REGENERATION ZONE AND BURNING OFF CARBONACEOUS PARTICLES ADHERED TO AID CATALYST.
Claim 3
Dependent Claim
41 words
The method of claim 1 wherein the coal liquids are subjected to a heat exchanger after leaving the secondary zone and before entering the primary zone to control the temperature of the liquids responsive to the temperature of the hydrocracking process.
Claim 4
Dependent Claim
54 words
The method of claim 1 wherein the hot water and coal liquid are taken from the wash zone after the catalyst is washed and is subjected to a separation process whereby coal liquids are separated from the water and reintroduced into the secondary reaction zone and the water is reintroduced to the wash zone.
Claim 5
Dependent Claim
35 words
The method of claim 1 wHerein hot CO2 is introduced into the regenerator zone to burn off carbon particles adhered to the catalyst and to form carbon monoxide by the reaction of CO2 with carbon.
Claim 6
Dependent Claim
20 words
The method of claim 1 wherein the regenerated catalyst is recirculated and reintroduced successively to said zones for hydrocracking purposes.
References Cited (Backward Citations)
US3104227A
Cited
US3232861A
Cited
US3557019A
Cited
US3524822A
Cited
US3505206A
Cited
US3575847A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |