Title:
MICROWAVE PLASMA BIOMASS ENTRAINED FLOW GASIFIER AND PROCESS
Document Type and Number:
WIPO Patent Application WO/2013/097532
Kind Code:
A1
Abstract:
A microwave plasma biomass entrained flow gasifier comprising a gasifier body (8), a fuel inlet arranged at the lower part of the gasifier body (8), a synthetic gas outlet at the top part of the gasifier body (8), and a slag discharge outlet (10) at the bottom part of the gasifier body (8). Arranged outside the gasifier body (8) is a fuel preprocessing system, comprising a fuel crushing apparatus (1), a sieving apparatus (2) arranged downstream to the fuel crushing apparatus (1), a particle diameter-qualified fuel chamber (3) and a particle diameter-unqualified fuel chamber (4) arranged in parallel and downstream to the sieving apparatus (2), and a gasifier-front chamber arranged downstream to the particle diameter-qualified fuel chamber (3), where the gasifier-front chamber (5) is connected at the bottom part thereof to the gasifier body (8) via a burner. Arranged at the synthesis gas outlet (9) at the top part of the gasifier is a synthesis gas monitoring unit (12). Also provided is a process utilizing the gasifier for biomass entrained flow gasification. The process comprises: 1) a biomass fuel is preprocessed; 2) a microwave plasma working gas is introduced into a plasma generator, excited into plasma then injected into the gasifier; 3) biomass fuel powdery particles are injected into the gasifier via the burner, while at the same time, an oxidizer is fed into the system via an oxygen/steam inlet, injected into the gasifier simultaneously with the biomass fuel, the biomass fuel is subjected to a thermochemical reaction within the gasifier; 4) the temperature and content of the synthesis gas are monitored for implementing adjustments in oxygen flow rate, steam flow rate, and microwave power; the temperature at the synthesis gas outlet is between 900°C and 1200°C; finally, the synthesis gas is drawn out from the synthesis gas outlet at the top part, while at the same time a liquid slag is discharged via the slug discharge outlet.
Inventors:
CHEN YILONG (CN)
ZHANG YANFENG (CN)
XIA MINGGUI (CN)
ZHANG LIANG (CN)
ZHANG YANFENG (CN)
XIA MINGGUI (CN)
ZHANG LIANG (CN)
Application Number:
PCT/CN2012/083562
Publication Date:
July 04, 2013
Filing Date:
October 26, 2012
Export Citation:
Assignee:
WUHAN KAIDI GENERAL RES INST ENG & TECH CO LTD (CN)
International Classes:
C10J3/46; C10J3/48
Foreign References:
| CN102559272A | 2012-07-11 | |||
| EP2163597A1 | 2010-03-17 | |||
| CN201218507Y | 2009-04-08 | |||
| CN101671578A | 2010-03-17 |
Other References:
See also references of EP 2799522A4
Attorney, Agent or Firm:
HUBEI WUHAN YONGJIA PATENT AGENCY COMPANY (CN)
湖北武汉永嘉专利代理有限公司 (CN)
湖北武汉永嘉专利代理有限公司 (CN)
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Claims: