Bench-Scale Development of Fluidized-Bed Spray-Dried Sorbents

Technical Report · Tue Dec 31 04:00:00 EST 1996

DOI:https://doi.org/10.2172/427512· OSTI ID:427512

Gupta, R P; Turk, B S; Gangwal, S K ^[1]

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1. Research Triangle Inst., Research Triangle Park, NC (United States)

Successful development of regenerable mixed-metal oxide sorbents for removal of reduced sulfur species (such as H{sub 2}S and COS) from coal-derived fuel gas streams at high=temperature, high-pressure (HTHP) conditions is a key to commercialization of the integrated-gasification-combined-cycle (IGCC) power systems. Among the various available coal-to-electricity pathways, IGCC power plants have the most potential with high thermal efficiency, simple system configuration, low emissions of SO{sub 2}, NO{sub x} and other contaminants, modular design, and low capital cost. Due to these advantages, the power plants of the 21st century are projected to utilize IGCC technology worldwide. Sorbents developed for sulfur removal are primarily zinc oxide-based inorganic materials, because of their ability to reduce fuel gas sulfur level to a few parts-per-million (ppm). This project extends the prior work on the development of fluidizable zinc titanate particles using a spray-drying technique to impart high reactivity and attrition resistance. Specific objectives are to develop highly reactive and attrition-resistant zinc titanate sorbents in 40- to 150-{mu}m particle size range for transport reactor applications using semicommercial- to full commercial-scale spray dryers, to transfer sorbent production technology to private sector, and to provide technical support for Sierra Pacific`s Clean Coal Technology Demonstration plant and METC`s hot-gas desulfurization process development unit (PDU), both employing a transport reactor system.

• Research Organization: USDOE Morgantown Energy Technology Center, WV (United States)
• Sponsoring Organization: USDOE Assistant Secretary for Fossil Energy, Washington, DC (United States)
• DOE Contract Number: AC21-88MC25006
• OSTI ID: 427512
• Report Number(s): DOE/MC/25006--97/C0722; CONF-960757--15; ON: DE97051019
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
ADSORBENTS
ADSORPTION
BENCH-SCALE EXPERIMENTS
COAL GAS
COMBINED-CYCLE POWER PLANTS
DESULFURIZATION
EXPERIMENTAL DATA
FLUIDIZED-BED COMBUSTION
HOT GAS CLEANUP
HYDROGEN SULFIDES
PARTICLE SIZE
SORBENT RECOVERY SYSTEMS
SORPTIVE PROPERTIES
SPRAY DRYING
SULFIDATION
SULFUR DIOXIDE
TITANATES
ZINC COMPOUNDS