RAPORT-HotGasConditioning-RecentProgressWithLarge ScaleBiomassGasificationSystems.pdf

August 2001 ¤ NREL/SR-510-29952

Hot Gas Conditioning: Recent

Progress With Larger-Scale

Biomass Gasification Systems

Update and Summary of Recent Progress

Don J. Stevens

Pacific Northwest National Laboratory

Richland, Washington

National Renewable Energy Laboratory

1617 Cole Boulevard

Golden, Colorado 80401-3393

NREL is a U.S. Department of Energy Laboratory

Operated by Midwest Research Institute

Battelle

Bechtel

•

Contract No. DE-AC36-99-GO10337

August 2001 ¤ NREL/SR-510-29952

Hot Gas Conditioning: Recent

Progress With Larger-Scale

Biomass Gasification Systems

Update and Summary of Recent Progress

Don J. Stevens

Pacific Northwest National Laboratory

Richland, Washington

NREL Technical Monitor: Richard Bain

Prepared under Subcontract No. 98 CO 004

National Renewable Energy Laboratory

1617 Cole Boulevard

Golden, Colorado 80401-3393

NREL is a U.S. Department of Energy Laboratory

Operated by Midwest Research Institute

Battelle

Bechtel

•

Contract No. DE-AC36-99-GO10337

NOTICE

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agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect

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ABSTRACT

As a result of environmental and policy considerations, there is increasing interest in using

renewable biomass resources as feedstock for power, fuels, and chemicals and hydrogen.

Biomass gasification is seen as an important technology component for expanding the use of

biomass. Advanced biomass gasification systems provide clean products that can be used

as fuel or synthesis gases in a variety of environmentally friendly processes.

Advanced end-use technologies such as gas turbines or synthesis gas systems require high

quality gases with narrowly defined specifications. Other systems such as boilers may also

have fuel quality requirements, but they will be substantially less demanding. The gas

product from biomass gasifiers contains quantities of particulates, tars, and other

constituents that may exceed these specified limits. As a result, gas cleaning and

conditioning will be required in most systems.

Over the past decade, significant research and development activities have been conducted

on the topic of gas cleanup and conditioning. This report provides an update of efforts

related to large-scale biomass gasification systems and summarizes recent progress.

Remaining research and development issues are also summarized.

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