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Title:
METHOD AND APPARATUS FOR USING EXCESS HEAT FROM POWER PLANT FLUE GAS TO DRY BIOMASS FUEL
Document Type and Number:
WIPO Patent Application WO/2016/062256
Kind Code:
A1
Abstract:
A method and an apparatus for using excess heat from power plant flue gas to dry biomass fuel. The method comprises the following steps: 1.) graduated use of excess heat from flue gas; 2.) first stage high-temperature rapid hot-air drying; 3.) second stage medium-temperature constant hot-air drying; 4.) third stage low-temperature accelerated drying. The apparatus comprises a multi-layered belt dryer (1) and a graduated heat-recovery and heat-exchange system for excess heat from flue gas. Horizontal partitions (1-2) partition conveyor belts (1-1) in a drying chamber of a dryer casing into a hermetically sealed high-temperature area (2), medium-temperature area (3), and low-temperature area (4), from top to bottom respectively. The front side of the high-temperature area (2) is provided with a high-temperature air inlet (5). The front side of the medium-temperature area (3) is provided with a medium-temperature air inlet (7). The front side of the low-temperature area (4) is provided with a low-temperature air inlet (9). A discharge chute (1-3) is provided between adjacent conveyor belts (1-1), such that the biomass fuel may be conveyed from upper layers to lower layers along a snakelike path. The method and device allows for the full utilization of excess heat from flue gas, thereby achieving the objectives of increasing drying efficiency, saving energy and reducing emissions.

Inventors:
CHEN YILONG (CN)
HU SHUCHUAN (CN)
ZHANG YANFENG (CN)
Application Number:
PCT/CN2015/092501
Publication Date:
April 28, 2016
Filing Date:
October 22, 2015
Export Citation:
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Assignee:
ZHONGYING CHANGJIANG INT NEW ENERGY INVEST CO LTD (CN)
International Classes:
F26B15/18; F26B21/14
Foreign References:
CN104329923A2015-02-04
CN204165357U2015-02-18
CN103575077A2014-02-12
CN101435650A2009-05-20
CN202692623U2013-01-23
KR20130038115A2013-04-17
Other References:
See also references of EP 3211356A4
Attorney, Agent or Firm:
WUHAN KAIYUAN INTELLECTUAL PROPERTY AGENT LTD. (CN)
武汉开元知识产权代理有限公司 (CN)
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