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Title: Coal liquefaction process utilizing coal/CO.sub.2 slurry feedstream

Abstract

A coal hydrogenation and liquefaction process in which particulate coal feed is pressurized to an intermediate pressure of at least 500 psig and slurried with CO.sub.2 liquid to provide a flowable coal/CO.sub.2 slurry feedstream, which is further pressurized to at least 1000 psig and fed into a catalytic reactor. The coal particle size is 50-375 mesh (U.S. Sieve Series) and provides 50-80 W % coal in the coal/CO.sub.2 slurry feedstream. Catalytic reaction conditions are maintained at 650.degree.-850.degree. F. temperature, 1000-4000 psig hydrogen partial pressure and coal feed rate of 10-100 lb coal/hr ft.sup.3 reactor volume to produce hydrocarbon gas and liquid products. The hydrogen and CO.sub.2 are recovered from the reactor effluent gaseous fraction, hydrogen is recycled to the catalytic reactor, and CO.sub.2 is liquefied and recycled to the coal slurrying step. If desired, two catalytic reaction stages close coupled together in series relation can be used. The process advantageously minimizes the recycle and processing of excess hydrocarbon liquid previously needed for slurrying the coal feed to the reactor(s).

Inventors:
 [1];  [2]
  1. (Yardley, PA)
  2. (S. Somerville, NJ)
Publication Date:
Research Org.:
0778886 INC
OSTI Identifier:
866997
Patent Number(s):
US 4839030
Assignee:
HRI, Inc. (Lawrenceville, NJ) NETL
DOE Contract Number:  
AC22-85PC80002
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
coal; liquefaction; process; utilizing; slurry; feedstream; hydrogenation; particulate; feed; pressurized; intermediate; pressure; 500; psig; slurried; liquid; provide; flowable; 1000; fed; catalytic; reactor; particle; size; 50-375; mesh; sieve; series; provides; 50-80; reaction; conditions; maintained; 650; degree; -850; temperature; 1000-4000; hydrogen; partial; rate; 10-100; lb; volume; produce; hydrocarbon; gas; products; recovered; effluent; gaseous; fraction; recycled; liquefied; slurrying; step; desired; stages; close; coupled; relation; advantageously; minimizes; recycle; processing; excess; previously; coal particle; hydrogen partial; reactor effluent; psig hydrogen; hydrocarbon liquid; reaction conditions; coal feed; hydrocarbon gas; liquefaction process; coal liquefaction; particle size; partial pressure; liquid products; coal slurry; liquid product; catalytic reaction; particulate coal; effluent gas; feed rate; process utilizing; coal hydrogenation; catalytic reactor; slurry feed; intermediate pressure; lb coal; coal hydrogen; produce hydrocarbon; /208/

Citation Formats

Comolli, Alfred G., and McLean, Joseph B. Coal liquefaction process utilizing coal/CO.sub.2 slurry feedstream. United States: N. p., 1989. Web.
Comolli, Alfred G., & McLean, Joseph B. Coal liquefaction process utilizing coal/CO.sub.2 slurry feedstream. United States.
Comolli, Alfred G., and McLean, Joseph B. Sun . "Coal liquefaction process utilizing coal/CO.sub.2 slurry feedstream". United States. https://www.osti.gov/servlets/purl/866997.
@article{osti_866997,
title = {Coal liquefaction process utilizing coal/CO.sub.2 slurry feedstream},
author = {Comolli, Alfred G. and McLean, Joseph B.},
abstractNote = {A coal hydrogenation and liquefaction process in which particulate coal feed is pressurized to an intermediate pressure of at least 500 psig and slurried with CO.sub.2 liquid to provide a flowable coal/CO.sub.2 slurry feedstream, which is further pressurized to at least 1000 psig and fed into a catalytic reactor. The coal particle size is 50-375 mesh (U.S. Sieve Series) and provides 50-80 W % coal in the coal/CO.sub.2 slurry feedstream. Catalytic reaction conditions are maintained at 650.degree.-850.degree. F. temperature, 1000-4000 psig hydrogen partial pressure and coal feed rate of 10-100 lb coal/hr ft.sup.3 reactor volume to produce hydrocarbon gas and liquid products. The hydrogen and CO.sub.2 are recovered from the reactor effluent gaseous fraction, hydrogen is recycled to the catalytic reactor, and CO.sub.2 is liquefied and recycled to the coal slurrying step. If desired, two catalytic reaction stages close coupled together in series relation can be used. The process advantageously minimizes the recycle and processing of excess hydrocarbon liquid previously needed for slurrying the coal feed to the reactor(s).},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1989},
month = {1}
}

Patent:

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