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Title: Catalytic two-stage coal liquefaction process having improved nitrogen removal

Abstract

A process for catalytic multi-stage hydrogenation and liquefaction of coal to produce high yields of low-boiling hydrocarbon liquids containing low concentrations of nitogen compounds. First stage catalytic reaction conditions are 700.degree.-800.degree. F. temperature, 1500-3500 psig hydrogen partial pressure, with the space velocity maintained in a critical range of 10-40 lb coal/hr ft.sup.3 catalyst settled volume. The first stage catalyst has 0.3-1.2 cc/gm total pore volume with at least 25% of the pore volume in pores having diameters of 200-2000 Angstroms. Second stage reaction conditions are 760.degree.-870.degree. F. temperature with space velocity exceeding that in the first stage reactor, so as to achieve increased hydrogenation yield of low-boiling hydrocarbon liquid products having at least 75% removal of nitrogen compounds from the coal-derived liquid products.

Inventors:
 [1]
  1. Yardley, PA
Publication Date:
Research Org.:
0778886 INC
OSTI Identifier:
867963
Patent Number(s):
US 5045180
Assignee:
HRI, Inc. (Princeton, NJ)
DOE Contract Number:  
AC22-88PC88818
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
catalytic; two-stage; coal; liquefaction; process; improved; nitrogen; removal; multi-stage; hydrogenation; produce; yields; low-boiling; hydrocarbon; liquids; containing; concentrations; nitogen; compounds; stage; reaction; conditions; 700; degree; -800; temperature; 1500-3500; psig; hydrogen; partial; pressure; space; velocity; maintained; critical; range; 10-40; lb; catalyst; settled; volume; 3-1; cc; gm; total; pore; 25; pores; diameters; 200-2000; angstroms; 760; -870; exceeding; reactor; achieve; increased; yield; liquid; products; 75; coal-derived; stage catalytic; hydrogen partial; liquids containing; psig hydrogen; hydrocarbon liquid; reaction conditions; liquefaction process; coal liquefaction; partial pressure; liquid products; liquid product; catalytic reaction; stage reactor; coal-derived liquid; low-boiling hydrocarbon; pore volume; nitrogen compounds; two-stage coal; space velocity; nitrogen compound; stage reaction; catalytic two-stage; catalytic multi-stage; nitrogen removal; lb coal; stage catalyst; hydrocarbon liquids; stage hydrogenation; stage coal; achieve increased; /208/

Citation Formats

Comolli, Alfred G. Catalytic two-stage coal liquefaction process having improved nitrogen removal. United States: N. p., 1991. Web.
Comolli, Alfred G. Catalytic two-stage coal liquefaction process having improved nitrogen removal. United States.
Comolli, Alfred G. Tue . "Catalytic two-stage coal liquefaction process having improved nitrogen removal". United States. https://www.osti.gov/servlets/purl/867963.
@article{osti_867963,
title = {Catalytic two-stage coal liquefaction process having improved nitrogen removal},
author = {Comolli, Alfred G},
abstractNote = {A process for catalytic multi-stage hydrogenation and liquefaction of coal to produce high yields of low-boiling hydrocarbon liquids containing low concentrations of nitogen compounds. First stage catalytic reaction conditions are 700.degree.-800.degree. F. temperature, 1500-3500 psig hydrogen partial pressure, with the space velocity maintained in a critical range of 10-40 lb coal/hr ft.sup.3 catalyst settled volume. The first stage catalyst has 0.3-1.2 cc/gm total pore volume with at least 25% of the pore volume in pores having diameters of 200-2000 Angstroms. Second stage reaction conditions are 760.degree.-870.degree. F. temperature with space velocity exceeding that in the first stage reactor, so as to achieve increased hydrogenation yield of low-boiling hydrocarbon liquid products having at least 75% removal of nitrogen compounds from the coal-derived liquid products.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1991},
month = {1}
}

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