公开(公告)号：US3719588A

公开(公告)日：1973-03-06

申请号：US3719588D

申请日：1970-10-26

Applicant: EXXON RESEARCH ENGINEERING CO

Inventor： VERNON L ,  PENNINGTON R

IPC: C10G45/26 ,  C10G49/00 ,  C10G17/00

CPC classification number: C10G49/007 ,  C10G45/26

Abstract: Hydrocarbonaceous liquids containing combined nitrogen and sulfur and boiling within the range from about 350* F. to about 1,000* F. can be hydrotreated in the presence of a carbon monoxide-sensitive hydrogenation catalyst with a carbon monoxidecontaining treat gas containing at least 2 volume percent CO if from 1 to 20 mols of steam per mol of carbon monoxide are present in the treat gas. The treat gas may also contain from 0 to 96 volume percent of hydrogen. In the preferred mode, a coal-derived liquid boiling within the range from 350* to 1,000* F. is hydrotreated in the presence of cobalt molybdate catalyst by a treat gas obtained as a synthesis gas and containing about 3 mol percent CO and 10 mol percent H2O, the hydrotreating conditions including a temperature from about 650* F. to about 800* F., a pressure from about 500 psig to about 2,500 psig, a treat gas-toliquid ratio from about 3,000 SCF/B to about 12,000 SCF/B and a liquid space velocity from about 0.5 W/Hr/W to about 2.0 W/Hr/W.

公开(公告)号：US3719587A

公开(公告)日：1973-03-06

申请号：US3719587D

申请日：1970-06-30

Applicant: EXXON RESEARCH ENGINEERING CO

Inventor： KARCHMER J ,  PENNINGTON R

IPC: C10G27/04 ,  C10G31/08 ,  C10G53/04

CPC classification number: C10G31/08 ,  C10G27/04 ,  C10G53/04

Abstract: Coal-derived naphtha boiling within the range from 80* F. to 450* F. has been found to contain sulfur as H2S and nitrogen as basic nitrogen compounds, particularly after the extract has been hydrocracked. By the present invention, the H2S is removed by purging the naphtha with an inert gas such as nitrogen, C1-C3 hydrocarbons, hydrogen, flue gas, CO2, and mixtures thereof. Purging conditions may include a temperature from about 40* F. to about 200* F., a pressure from about 0 psig to about 150 psig, and a treat rate from about 50 SCF/B to about 300 SCF/B. The basic nitrogen compounds are removed by washing the naphtha with water or with a dilute aqueous solution of strong acids. A concentration of 0 to 10 weight percent of acids, such as sulfuric acid, hydrochloric acid, phosphoric acid, and acetic acid, are suitably employed. Washing conditions are generally the same as those to be employed in the purging step and may include a temperature from about 40* F. to about 200* F., a pressure from about 0 psig to about 150 psig, and a treat rate from about 0.01 volume of acid per volume of naphtha to about 1.0 volume of acid per volume of naphtha.

公开(公告)号：US3754876A

公开(公告)日：1973-08-28

申请号：US3754876D

申请日：1971-12-10

Applicant: EXXON RESEARCH ENGINEERING CO

Inventor： HOCHMAN J ,  PENNINGTON R ,  VON ROSENBERG H

IPC: C10G1/00 ,  C10G1/02 ,  C10L9/00 ,  C10L5/00

CPC classification number: C10L9/00 ,  C10G1/00 ,  C10G1/02

Abstract: A process in which lumps of sub-bituminous or lower rank coal are heated to pyrolysis temperatures of up to about 1,000* F. by contact, preferably countercurrent, with an inert hydrogen-poor hydrocarbonaceous heat transfer fluid, preferably a coal-derived oil, thereby transforming the coal to a char product in lump form of upgraded calorific value, such product, moreover, being less pyrophoric than a char product produced by pyrolysis at the same temperatures in an inert gaseous (nitrogen) atmosphere.