Hybrid coal gasification

Journal Article · Mon Jan 15 04:00:00 EST 2007 · Power Engineering (Barrington)

OSTI ID:20885818

Moore, K ^[1]

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1. Phenix Ltd. (United States)

Retrofitting gas, oil and coal-fired boilers can reduce operating costs and meet EPA's Clean Air Interstate Rules (CAIR) when firing most Eastern and Midwest bituminous coals. The trademarked Clean Combustion System (CCS) concept, conceived at Rockwell International, evolved from a confluence of advanced combustion modelling know-how, experience in coal gasification and wet-bottom boiler operation and design. The CCS is a high temperature air-feed entrained flow gasifier that replaces a boiler's existing burners. It fires pulverized coal with some limestone added to provide calcium to capture sulfur and provide a clean hot fuel-rich gas to the boiler furnace. Subsequent over-fire air (OFA) staging completes the combustion. A 'sulfur bearing glass' waste product results from the coal ash and the calcium sulfide. The CCS process prevents formation of NOx from fuel-bound nitrogen. The initial commercialisation of CCS is the update and retrofit an industrial stoker design boiler. Steps for the retrofit are described in the article. 2 figs., 1 photo.

• OSTI ID: 20885818
• Journal Information: Power Engineering (Barrington), Journal Name: Power Engineering (Barrington) Journal Issue: 1 Vol. 111; ISSN 0032-5961; ISSN POENAI
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
AIR POLLUTION ABATEMENT
BOILERS
CALCIUM SULFIDES
CAPTURE
COAL
COAL GASIFICATION
DESULFURIZATION
ENTRAINMENT
FUEL OILS
GAS GENERATORS
HYBRID SYSTEMS
LIMESTONE
NATURAL GAS
NITROGEN OXIDES
OPERATING COST
PULVERIZED FUELS
RETROFITTING
STAGED COMBUSTION
SULFUR
USA
WASTE PRODUCT UTILIZATION