Ammonia production by integrated intensified processes

Patent metadata

Field	Value
Publication number	US-9416019-B2
Application number	US-201113819212-A
Country	US
Kind code	B2
Filing date	Aug 30, 2011
Priority date	Aug 27, 2010
Publication date	Aug 16, 2016
Grant date	Aug 16, 2016

Abstract

An ammonia production process is disclosed. The process uses gasification of biomass waste and the like to produce syngas which, using an integrated system including using nitrogen enriched air and a porous coated catalyst, produces ammonia in a plasma reactor. The ammonia is finally recovered using sulphonated PolyHIPE Polymer which can be used as a fertilizer after neutralization.

First claim

The invention claimed is:

1. A method of production of ammonia comprising the steps of:
in a first reactor system, extracting oxygen from air using an oxygen selective membrane, thereby producing nitrogen enriched air, and gasifying combustible material in a gasifier, using said oxygen extracted from said air, to produce syngas;
in a second reactor system, receiving a hydrogen-depleted syngas from a third reactor system and removing oxygen from said nitrogen enriched air by combustion to produce oxygen-depleted nitrogen enriched air and a carbon dioxide output, with the carbon dioxide output recycled to the gasifier in the first reactor system; and
in the third reactor system, separating hydrogen from said syngas directly from said first reactor system to produce hydrogen-depleted syngas and reacting said hydrogen with said oxygen-depleted nitrogen enriched air from said second reactor system to produce ammonia.

2. A method according to claim 1 , wherein said step of separating hydrogen from said syngas comprises extracting said hydrogen from the syngas using at least one hydrogen selective membrane.

3. A method according to claim 1 , wherein said reacting to produce ammonia takes place in a plasma reactor.

Assignees

• Akay Galip
• Univ Newcastle

Inventors

• Akay Galip

Classifications

• C10J2300/0956

  Air or oxygen enriched air · CPC title

• C01B3/025 Primary

  Preparation or purification of gas mixtures for ammonia synthesis · CPC title

• Y10T428/2991

  Coated · CPC title

• C01C1/0494

  using plasma or electric discharge · CPC title

• C10J2300/0916

  Biomass · CPC title