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Title: Removal of hydrogen sulfide as ammonium sulfate from hydropyrolysis product vapors

Patent ·
OSTI ID:1159956
; ; ;

A system and method for processing biomass into hydrocarbon fuels that includes processing a biomass in a hydropyrolysis reactor resulting in hydrocarbon fuels and a process vapor stream and cooling the process vapor stream to a condensation temperature resulting in an aqueous stream. The aqueous stream is sent to a catalytic reactor where it is oxidized to obtain a product stream containing ammonia and ammonium sulfate. A resulting cooled product vapor stream includes non-condensable process vapors comprising H.sub.2, CH.sub.4, CO, CO.sub.2, ammonia and hydrogen sulfide.

Research Organization:
Gas Technology Institute, Des Plaines, IL (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
EE0002873
Assignee:
Gas Technology Institute (Des Plaines, IL)
Patent Number(s):
8,859,831
Application Number:
13/196,645
OSTI ID:
1159956
Resource Relation:
Patent File Date: 2011 Aug 02
Country of Publication:
United States
Language:
English

References (15)

Integrated oxygasification and hydropyrolysis process for producing liquid and gaseous hydrocarbons patent November 1983
Process for the simultaneous absorption of sulfur oxides and production of ammonium sulfate patent September 1987
Process for the selective removal of hydrogen sulphide and carbonyl sulfide from light hydrocarbon gases containing carbon dioxide patent June 1988
Treatment of an aqueous stream containing water-soluble inorganic sulfide compounds patent May 1993
Process for the conversion of carbonaceous feedstocks to particulate carbon and methanol patent June 1995
Production and purification of contaminated effluent streams containing ammonium sulfate and ammonia patent July 1996
Disposal of hydrogen sulfide gas by conversion to sulfate ions in an aqueous solution patent January 2000
Integrated gasification—pyrolysis process patent July 2012
Controlling the synthesis gas composition of a steam methane reformer patent September 2012
Flue gas scrubbing apparatus and process patent January 2013
Method of hydrogasification of biomass to methane with low depositable tars patent February 2013
Hydropyrolysis of biomass for producing high quality fuels patent July 2013
Novel Integrated Gasification - Pyrolysis Process patent-application April 2009
Method for Producing Methane from Biomass patent-application October 2010
Catalytic Hydropyrolysis of Organophillic Biomass patent-application May 2011

Cited By (2)

Removal of hydrogen sulfide as ammonium sulfate from hydropyrolysis product vapors patent March 2017
Separation process with modified enhanced hot separator system patent August 2016

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