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Title: Low-cost process for hydrogen production

Abstract

A method is provided for producing hydrogen and carbon black from hydrocarbon gases comprising mixing the hydrocarbon gases with a source of carbon and applying radiofrequency energy to the mixture. The hydrocarbon gases and the carbon can both be the products of gasification of coal, particularly the mild gasification of coal. A method is also provided for producing hydrogen and carbon monoxide by treating a mixture of hydrocarbon gases and steam with radio-frequency energy.

Inventors:
; ;
Publication Date:
OSTI Identifier:
6225840
Patent Number(s):
US 5198084; A
Application Number:
PPN: US 7-380408
Assignee:
Western Research Inst., Laramie, WY (United States) IMS; EDB-93-119454
DOE Contract Number:
AC21-87MC24268
Resource Type:
Patent
Resource Relation:
Patent File Date: 17 Jul 1989
Country of Publication:
United States
Language:
English
Subject:
08 HYDROGEN; 01 COAL, LIGNITE, AND PEAT; CARBON BLACK; SYNTHESIS; CARBON MONOXIDE; HYDROGEN PRODUCTION; COAL GASIFICATION; RF SYSTEMS; COAL GAS; HYDROGEN; IRRADIATION; MIXTURES; RADIOWAVE RADIATION; STEAM; CARBON; CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; DISPERSIONS; ELECTROMAGNETIC RADIATION; ELEMENTS; FLUIDS; GASES; GASIFICATION; NONMETALS; OXIDES; OXYGEN COMPOUNDS; PYROLYSIS PRODUCTS; RADIATIONS; THERMOCHEMICAL PROCESSES; 080107* - Hydrogen- Production- Coal Gasification; 010404 - Coal, Lignite, & Peat- Gasification

Citation Formats

Cha, C.H., Bauer, H.F., and Grimes, R.W. Low-cost process for hydrogen production. United States: N. p., 1993. Web.
Cha, C.H., Bauer, H.F., & Grimes, R.W. Low-cost process for hydrogen production. United States.
Cha, C.H., Bauer, H.F., and Grimes, R.W. 1993. "Low-cost process for hydrogen production". United States. doi:.
@article{osti_6225840,
title = {Low-cost process for hydrogen production},
author = {Cha, C.H. and Bauer, H.F. and Grimes, R.W.},
abstractNote = {A method is provided for producing hydrogen and carbon black from hydrocarbon gases comprising mixing the hydrocarbon gases with a source of carbon and applying radiofrequency energy to the mixture. The hydrocarbon gases and the carbon can both be the products of gasification of coal, particularly the mild gasification of coal. A method is also provided for producing hydrogen and carbon monoxide by treating a mixture of hydrocarbon gases and steam with radio-frequency energy.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1993,
month = 3
}
  • A method is provided for producing hydrogen and carbon black from hydrocarbon gases comprising mixing the hydrocarbon gases with a source of carbon and applying radiofrequency energy to the mixture. The hydrocarbon gases and the carbon can both be the products of gasification of coal, particularly the mild gasification of coal. A method is also provided for producing hydrogen an carbon monoxide by treating a mixture of hydrocarbon gases and steam with radio-frequency energy.
  • This patent describes a process for the production of gases rich in hydrogen by completely gasifying coal in an apparatus comprising an upper retort chamber, and a lower producer chamber arranged in open communication with the retort chamber so as to allow the carbonized coal to fall directly from the retort to the producer. The process involves carbonizing the coal by subjecting it to temperatures which increase gradually as the coal passes from the inlet of the retort chamber to the top of the producer chamber, cracking the vapors and gases produced during the carbonization of the coal in themore » retort chamber by passing them in a downward direction through the zone of highest temperature, and subjecting the carbonized fuel in the producer chamber to simultaneous treatment with steam and air. The quantities of steam and air are regulated, with the zone of highest temperature located at the top of the producer chamber, with the temperature decreasing gradually from the aforesaid zone through the fuel bed. This occurs in the producer down to a temperature of comparatively low value at the bottom of the producer chamber where the gases are drawn off.« less
  • Hydrogen and carbonyl sulfide are produced by a process comprising contacting gaseous hydrogen sulfide with gaseous carbon monoxide in the presence of a catalytic composition containing an oxide and/or sulfide of at least one of molybdenum, tungsten, iron, chromium and vanadium in combination with at least one promoter metal, e.g. a catalyst of the formula Cs Cu /SUB 0.2/ Zn /SUB 0.5/ Mn /SUB 0.5/ Sn /SUB 2.4/ Mo O /SUB x/ S /SUB y/ .
  • Hydrogen and carbonyl sulfide are produced by a process comprising contacting gaseous hydrogen sulfide with gaseous carbon monoxide in the presence of a metal boride, carbide, nitride and/or silicide catalyst, such as titanium carbide, vanadium boride, manganese nitride or molybdenum silicide.
  • Sulfur and hydrogen are produced from hydrogen sulfide by bringing hydrogen sulfide into contact, at a temperature exceeding the boiling point of sulfur, with at least one member selected from the group consisting of the sulfides of molybdenum, tungsten and ruthenium to give rise to a gaseous mixture consisting of hydrogen sulfide, hydrogen and sulfur. The produced mixture is cooled to separate therefrom the sulfur component in the condensed form and leave behind a gaseous mixture whereas the hydrogen component makes up the majority of the total weight thereof. Hydrogen sulfide is removed from this mixture by means of condensationmore » or absorption.« less