I ran across these links to presentations on gasifiers and IGCC, which I hadn't seen before and found them informative. Eventually some of the info will be incorporated into a revision of the "About Gasifier" and "About IGCC" posts, but for now you will have to peruse them by yourself if you have any interest. They were all found on a search for "Rocketdyne Gasifier" although they have much more information. They are all quite recent, so all the better.
An outline of the content of each presentation follows:
The EPRI Gasification & IGCC presentation gives the most detailed information on CO2, gasification and IGCC. It includes the options for CO2 sequestration: conservation, renewables, nuclear, natural gas, CO2 capture and sequestration; gives IGCC flow diagrams, gasification process selection - choices: dry ash moving bed gasifier, fluidized bed gasifer, entrained flow gasifier; causes & effects of methane formation; selects single stage entrained flow gasifier at high pressure in quench mode; new developments in IGCC: pump for feed & Rocketdyne gasifier; economics of IGCC processes: GE quench at $1650/kW and $0.0627 $/kWh was lowest cost for plants with CO2 capture; Improvement opportunities for IGCC: ASU power consumption, gas separation membranes, gas turbine redesign, solid oxide fuel cells for axillary power; in 2004 115 new coal plants (62 GW) were proposed, 33% may be built.
The NETL Gassification presentation details the NETL R&D program. Main gasification research areas: ASU, develop single train gasifier, improve gas cleaning; 2020 goals for IGCC: 60% efficiency, greater than 90% availability, capital cost $800-$900 per kWh and cost of electricity less than $0.03 per kWh (all w/o CO2 capture); gasifiers: slagging gasifiers (commercial), Southern transport (pilot scale)and Rocketdyne (pilot 2007); obviously pushing Rocketdyne; and goals for gas cleanup.
The NETL presentation on coal programs gives various pathways to zero emissions coal power: IGCC, post combustion (PC) capture, and oxy combustion (gasification-combustion); progression of technologies leading to $0.048 cent electricity with carbon capture with "chemical looping & co-storage of H2S; more info on turbine development program; hydrogen separation membranes; less than 10% penalty for CO2 sequestration by 2015 and a brief description of FutureGen which integrates all R& D programs.
The GTC presentation goes through some of the basics; gives results of a survey: 385 operating gasifiers in 117 operating plants worldwide, 5% annual growth, most operating using coal as feedstock, most producing chemicals not power, only in North America are natural gas prices and environment driving construction, 20 gasifiers operating in U.S., list of U.S. gasifiers; U.S. capacity additions using natural gas have been decreasing since 2002.
EPRI Gasification & IGCC - Design Issues & Opportunities, Electric Power Research Institute (EPRI), March 2005
Gasification: Ultra Clean & Competitive, DOE National Energy Technology Laboratory (NETL), June 2005
DOE R&D Programs in the Strategic Center for Coal, NETL, August 2005
Coal Gasification & IGCC/Polygen Performance & Prospects in the U.S., Gasification Technologies Council (GTC), May 2005