Clean Coal Technology

2014, v.20;No.93(05) 97-100

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Utilization status of lignite and pyrolysis products

LIU Jun;ZOU Tao;CHU Mo;CHANG Zhibing;LIN Yian;

Abstract:

In order to improve the utilization rate of lignite,the lignite reserves and distribution status was introduced. The utilization ways of lignite,including associated resources utilization,lignite direct combustion,dehydration and briquetting,gasification,liquefaction,pyrolysis and coal water mixture preparation were introduced. Then the using direction of gas,liquid and solid productions of lignite pyrolysis were further investigated. The authors put forward some new utilization methods of lignitic semi-coke,including gasifying the semi-coke by the dry gasification and preparing coal water mixture( CWM) with semi-coke and pyrolytic waste water. The CWM was gasified to produce syngas by the wet gasification. Then the syngas was used to prepare methane with methanation catalysts,or compound petrol and diesel by Fischer-Tropsch synthesis.

Key Words: lignite utilization;pyrolysis;coal tar;semi-coke utilization;semi-coke gasification;syngas methanation

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Authors: LIU Jun;ZOU Tao;CHU Mo;CHANG Zhibing;LIN Yian;

DOI: 10.13226/j.issn.1006-6772.2014.05.024

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