Removal of hydrogen sulfide as ammonium sulfate from hydropyrolysis product vapors

US8859831B2 · kind B2 · utility

Assignee

• GAS TECHNOLOGY INSTITUTE · US

Inventors

• Terry L. Marker · Warrenville, US
• Larry G. Felix · Pelham, US
• Martin B. Linck · Grayslake, US
• Michael J. Roberts · Little Weighton, GB

Key dates

• Filing date: Aug 2, 2011
• Grant date: Oct 14, 2014
• Expiry date: Jun 22, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02W30/40
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

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 H2, CH4, CO, CO2, ammonia and hydrogen sulfide.