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Title:
PROCESS FOR PRODUCING HIGH CALORIFIC VALUE WATER-COAL SLURRY BY UTILIZING COAL OR COAL GANGUE, AND COAL GASIFICATION PROCESS USING SAME
Document Type and Number:
WIPO Patent Application WO/2019/001231
Kind Code:
A1
Abstract:
A process for producing high calorific value water-coal slurry by utilizing coal or coal gangue. The coal or the coal gangue comprises incombustible minerals and combustible containing carbon-hydrogen. The process comprises the following steps: A. wet-grinding coal or coal gangue in water until an average particle size of particles is smaller than 500 micrometers, adding additives in a continuous wet-grinding process, and uniformly dispersing the additives, to obtain micro-nano water-coal slurry; B. introducing micro-bubbles with a diameter smaller than 200 micrometers into the micro-nano water-coal slurry, wherein the mineral particles bonded with the additives are agglomerated and sunken as a bottom stream, and the combustible particles containing the carbon-hydrogen floats along with the bubbles to be a floating stream, so that the separation of the mineral particles and the combustible particles can be realized; and C. separating the combustible particles containing the carbon-hydrogen from the floating stream, and preparing the high calorific value water-coal slurry with a calorific value higher than 4000 kcal/kg by virtue of press filtering. Also provided are the high calorific value water-coal slurry, use of using the high calorific value water-coal slurry as a raw material of a coal gasification process, and the coal gasification process.

Inventors:
LIU, Ke (No.1088, Xueyuan Road Xili Town, Nanshan Distric, Shenzhen Guangdong 5, 518055, CN)
WENG, Li (No.1088, Xueyuan Road Xili Town, Nanshan Distric, Shenzhen Guangdong 5, 518055, CN)
WU, Changning (No.1088, Xueyuan Road Xili Town, Nanshan Distric, Shenzhen Guangdong 5, 518055, CN)
Application Number:
CN2018/089958
Publication Date:
January 03, 2019
Filing Date:
June 05, 2018
Export Citation:
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Assignee:
SHENZHEN REVELATION TECHNOLOGY CO., LTD. (No.1088, Xueyuan Road Xili Town, Nanshan Distric, Shenzhen Guangdong 5, 518055, CN)
International Classes:
C10J3/46; B03D1/02; C10L1/32
Domestic Patent References:
WO2009033203A12009-03-19
Foreign References:
CN107267236A2017-10-20
US20160082446A12016-03-24
CN1181996A1998-05-20
CN106076658A2016-11-09
Attorney, Agent or Firm:
BEIJING LINGZHUAN INTELLECTUAL PROPERTY AGENCY CO., LTD (YANG Bing, Room 5418 Building 5, Garden Hotel, No.30 Huayuan East Road, Haidian District, Beijing 3, 100083, CN)
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