Abstract An integrated process for simultaneously recovering liquid and gaseous products from coal. A slurry is formed from crushed coal and recycled oil and is introduced to a three-zone reactor along with a hydrocracking catalyst and sand, the latter of which acts as a conveying medium. In the first zone, coal liquids are extracted and conveyed to a fractionation unit. In the second zone, the carbon coked on the solids is gasified with air creating a producer gas which flows upwardly countercurrent to the downward flow of the aforementioned mixture and supplying heat for the extraction stage. In the third stage, the remaining carbon is gasified with oxygen and carbon dioxide to a substantially nitrogen-free carbon monoxide. The carbon monoxide is desulfurized in a metal oxide bed.
Inventors
👤 L Leas
👤 R Leas
👤 C Johnson
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-28 11:02
CPC Classifications
C; C10; C10G; C10G1/00; C10G1/08; C10G1/083
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
26 words
The method of claim 1 including the step of separating coal ash from said mixture in said middle zone by fluidizing said ash from said mixture.
Claim 2
Dependent Claim
32 words
The method of claim 1 including the step of introducing an inert, solid particulate material into said mixture to serve as a conveying medium for said slurry and catalyst through said zones.
Claim 3
Dependent Claim
22 words
The method of claim 3 wherein said sand and catalyst are taken from said bottom zone and recycled to said top zone.
Claim 4
Dependent Claim
37 words
The method of claim 1 including the steps of removing said carbon monoxide from said bottom zone and desulfurizing it by reacting the sulfur therein with cobalt oxide in its higher oxide form to form cobalt sulfide.
Claim 5
Dependent Claim
16 words
The method of claim 3 wherein said mixture follows a tortuous path through said top zone.