Production of carbon monoxide by the gasification of carbonaceous materials

Patent · Tue May 05 04:00:00 EDT 1981

OSTI ID:5907114

Kamody, J F

An increased amount of carbon monoxide is produced in a process for the gasification of carbonaceous materials by employing a reverse water gas shift reaction in the process. Raw gas produced by the gasification of carbonaceous materials contains predominantly carbon monoxide and hydrogen along with hydrogen sulfide, carbon dioxide, water and methane. Carbon dioxide is separated from the raw gas as is the hydrogen sulfide. Thereafter , the carbon monoxide is separated from the raw gas to yield one portion of the carbon monoxide product gas. After the removal of carbon monoxide the raw gas consists of a hydrogen-rich gas. The hydrogen-rich gas which may be purified is mixed with the previously separated carbon dioxide along with any imported carbon dioxide and along with a recycle gas from a catalytic reaction loop. This mixed gas is conveyed to a heat exchanger in the catalytic reaction loop and passed through a heat exchanger located immediately after the gasifier through which the raw product gas passes. In the heat exchanger the hot raw product gas indirectly contacts the mixed gas and transfers some of its sensible heat to the mixed gas to effect the catalytically promoted, endothermic reaction of carbon dioxide and hydrogen to produce a carbon monoxide-containing gas. The indirect contacting for heat exchange is conducted in a manner that limits the accumulation of elemental carbon from any of the carbon containing components of the mixed gas. The carbon monoxide is separated from the other components of the carbon monoxide containing gas to yield a second portion of carbon monoxide gas which is then combined with the first portion of carbon monoxide product gas to give the increased amount of carbon monoxide product gas.

• Assignee: Koppers Co Inc
• Patent Number(s): US 4265868
• OSTI ID: 5907114
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CARBONACEOUS MATERIALS
CATALYSIS
CHALCOGENIDES
COAL GASIFICATION
DESIGN
GASIFICATION
HEAT EXCHANGERS
HYDROGEN PRODUCTION
MATERIALS
OXIDES
OXYGEN COMPOUNDS
PRODUCTION
SEPARATION PROCESSES
THERMOCHEMICAL PROCESSES