Progress in utilization of semi-coke as solid fuel

doi:10.3969/j.issn.2097-0706.2023.05.002

Abstract

Abstract:

As a new type of cheap clean fuel with high calorific value prepared by raw coal or pyrolyzed biomass， semi-coke is widely used in chemical metallurgy and other fields. The efficient and clean combustion of the solid fuel with semi-coke as its main component is highly environmental-friendly and economic， which contributes significantly to the energy conservation，emission reduction and economy development of China. The progress made in semi-coke fuel is reviewed. The technical route and study outcomes of pure semi-coke combustion verify the feasibility of its industrialization. To analyze the co-combustion of semi-coke with other combustible substances， the feasibility of semi-coke co-combustion is verified on a 660 MW supercritical boiler under the condition that the mass fraction of semi-coke is 50%. To analyze the application of semi-coke co-combustion in other fields， the economy and environmental benefits of semi-coke fuel applied in household burners are verified. The pollutant emissions， combustion stability， calorific value， comprehensive combustion efficiency， economic and environmental benefits of semi-coke fuel are evaluated comprehensively， then the development directions of semi-coke fuel are analyzed and summarized. Finally， based on the problems existing in current researches， the future research directions of semi-coke are discussed， which provides a reference for further study in this field.

Key words: nature of semi-coke, combustion method, solid fuel, environmental impact, solid waste biomass

CLC Number:

TK01

LI Qingyang, LI Chao, JIANG Yuchen, HU Xun. Progress in utilization of semi-coke as solid fuel[J]. Integrated Intelligent Energy, 2023, 45(5): 13-23.

Figures/Tables 10

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Table 1

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炉型	煤种	PM_2.5	总颗粒物
陕北民用燃煤炉	兰炭型焦	—	—
	兰炭	35	625
	晋城无烟煤	50	786
	宁夏无烟煤	106	1 026
	榆林烟煤	842	2 442
北京民用燃煤炉	兰炭型焦	98	427
	兰炭	—	812
	晋城无烟煤	—	3 060
	内蒙古准格尔煤	740	6 579
	新疆乌东烟煤	1 175	3 586
	榆林烟煤	1 146	4 371
灶台炉	兰炭型焦	256	4 225
	兰炭	382	10 772
	晋城无烟煤	462	6 358
	榆林烟煤	1 413	61 622