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Title: Catalytic two-stage coal hydrogenation and hydroconversion process

Abstract

A process for two-stage catalytic hydrogenation and liquefaction of coal to produce increased yields of low-boiling hydrocarbon liquid and gas products. In the process, the particulate coal is slurried with a process-derived liquid solvent and fed at temperature below about 650.degree. F. into a first stage catalytic reaction zone operated at conditions which promote controlled rate liquefaction of the coal, while simultaneously hydrogenating the hydrocarbon recycle oils at conditions favoring hydrogenation reactions. The first stage reactor is maintained at 650.degree.-800.degree. F. temperature, 1000-4000 psig hydrogen partial pressure, and 10-60 lb coal/hr/ft.sup.3 reactor space velocity. The partially hydrogenated material from the first stage reaction zone is passed directly to the close-coupled second stage catalytic reaction zone maintained at a temperature at least about 25.degree. F. higher than for the first stage reactor and within a range of 750.degree.-875.degree. F. temperature for further hydrogenation and thermal hydroconversion reactions. By this process, the coal feed is successively catalytically hydrogenated and hydroconverted at selected conditions, which results in significantly increased yields of desirable low-boiling hydrocarbon liquid products and minimal production of undesirable residuum and unconverted coal and hydrocarbon gases, with use of less energy to obtain the low molecular weight products, while catalyst lifemore » is substantially increased.« less

Inventors:
 [1];  [2];  [3]
  1. (Denville, NJ)
  2. (So. Somerville, NJ)
  3. (Yardley, PA)
Issue Date:
Research Org.:
HYDROCARBON RESEARCH INC
OSTI Identifier:
867019
Patent Number(s):
4842719
Assignee:
HRI, Inc. (Lawrenceville, NJ) OSTI
DOE Contract Number:  
AC22-83PC60017
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
catalytic; two-stage; coal; hydrogenation; hydroconversion; process; liquefaction; produce; increased; yields; low-boiling; hydrocarbon; liquid; gas; products; particulate; slurried; process-derived; solvent; fed; temperature; below; 650; degree; stage; reaction; zone; operated; conditions; promote; controlled; rate; simultaneously; hydrogenating; recycle; oils; favoring; reactions; reactor; maintained; -800; 1000-4000; psig; hydrogen; partial; pressure; 10-60; lb; space; velocity; partially; hydrogenated; material; passed; directly; close-coupled; 25; range; 750; -875; thermal; feed; successively; catalytically; hydroconverted; selected; results; significantly; desirable; minimal; production; undesirable; residuum; unconverted; gases; energy; obtain; molecular; weight; catalyst; life; substantially; unconverted coal; stage catalytic; hydrogen partial; psig hydrogen; substantially increased; zone maintained; hydrocarbon liquid; controlled rate; coal feed; conversion process; catalytic hydrogenation; hydrocarbon gas; temperature below; molecular weight; reaction zone; partial pressure; liquid products; liquid solvent; liquid product; catalytic reaction; particulate coal; stage reactor; low-boiling hydrocarbon; two-stage coal; hydrocarbon gases; coal hydrogenation; space velocity; substantially increase; two-stage catalytic; passed directly; catalyst life; significantly increased; stage reaction; partially hydrogenated; hydrogenation reaction; increased yields; gas product; catalytic two-stage; reactor space; gas products; lb coal; conversion reaction; weight products; increased yield; hydrogenated material; hydroconversion process; significantly increase; coal hydrogen; stage coal; carbon gases; produce increased; conversion reactions; /208/

Citation Formats

MacArthur, James B., McLean, Joseph B., and Comolli, Alfred G. Catalytic two-stage coal hydrogenation and hydroconversion process. United States: N. p., 1989. Web.
MacArthur, James B., McLean, Joseph B., & Comolli, Alfred G. Catalytic two-stage coal hydrogenation and hydroconversion process. United States.
MacArthur, James B., McLean, Joseph B., and Comolli, Alfred G. Sun . "Catalytic two-stage coal hydrogenation and hydroconversion process". United States. https://www.osti.gov/servlets/purl/867019.
@article{osti_867019,
title = {Catalytic two-stage coal hydrogenation and hydroconversion process},
author = {MacArthur, James B. and McLean, Joseph B. and Comolli, Alfred G.},
abstractNote = {A process for two-stage catalytic hydrogenation and liquefaction of coal to produce increased yields of low-boiling hydrocarbon liquid and gas products. In the process, the particulate coal is slurried with a process-derived liquid solvent and fed at temperature below about 650.degree. F. into a first stage catalytic reaction zone operated at conditions which promote controlled rate liquefaction of the coal, while simultaneously hydrogenating the hydrocarbon recycle oils at conditions favoring hydrogenation reactions. The first stage reactor is maintained at 650.degree.-800.degree. F. temperature, 1000-4000 psig hydrogen partial pressure, and 10-60 lb coal/hr/ft.sup.3 reactor space velocity. The partially hydrogenated material from the first stage reaction zone is passed directly to the close-coupled second stage catalytic reaction zone maintained at a temperature at least about 25.degree. F. higher than for the first stage reactor and within a range of 750.degree.-875.degree. F. temperature for further hydrogenation and thermal hydroconversion reactions. By this process, the coal feed is successively catalytically hydrogenated and hydroconverted at selected conditions, which results in significantly increased yields of desirable low-boiling hydrocarbon liquid products and minimal production of undesirable residuum and unconverted coal and hydrocarbon gases, with use of less energy to obtain the low molecular weight products, while catalyst life is substantially increased.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1989},
month = {1}
}

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