煤气化细渣燃烧技术研究进展

doi:10.16085/j.issn.1000-6613.2022-0521

摘要/Abstract

摘要：

简述了煤气化细渣的基础燃烧特性、燃烧动力学和燃烧应用三方面的研究现状，分析表明：煤气化细渣基础燃烧特性较差，难以单独稳定燃烧，与其他燃料掺烧可提高其燃烧性能；煤气化细渣的粒径、掺烧比和种类等因素对其燃烧性能影响较大，应着重加以研究；煤气化细渣燃烧动力学多采用Coats-Redfern积分法进行研究，求解过程简单，但存在准确性相对较低的问题，采用多重扫描速率法等进行相关研究可提高准确性，具有研究价值，但鲜有报道。掺混燃烧是煤气化细渣燃烧应用的主要方式，具有一定的经济和环境效益，但多数会引起一些副作用；单独燃烧是煤气化细渣燃烧应用的另一方式，具有燃烧效率高的优点，但需对燃烧设备进行针对性的设计、开发。最后提出了煤气化细渣燃烧技术今后的研究方向，以期为相关领域科研工作者提供参考。

关键词: 煤气化细渣, 基础燃烧特性, 燃烧动力学, 燃烧应用技术, 掺混燃烧

Abstract:

The research status of coal gasification fine slag combustion technology including basic combustion characteristics, combustion kinetics and combustion application are described. The basic combustion characteristics of coal gasification fine slag are poor, so it is difficult to stably burn alone, and blending with other fuels can improve its combustion performance. The particle size, mixing ratio and type of coal gasification fine slag have a great influence on its combustion performance, which should be studied emphatically. The combustion kinetics of coal gasification fine slag is mostly studied by the Coats-Redfern integral method, the solution process of which is simple, but the accuracy is relatively low. The multiple scan rate method can improve the accuracy of combustion kinetics and has research value, but there are few reports about it. Blending combustion is the main method of coal gasification fine slag combustion application and has certain economic and environmental benefits, but mostly it causes some side effects. Separate combustion is another way of coal gasification fine slag combustion application, which has the advantage of high combustion efficiency, but requires targeted design and development of combustion equipment. Finally, the future research direction of coal gasification fine slag combustion technology is put forward, in order to provide reference for scientific researchers in related fields.

Key words: coal gasification fine slag, basic combustion characteristics, combustion kinetics, combustion utilization technology, blending combustion

中图分类号:

TQ546

付春龙, 王松江, 李国智. 煤气化细渣燃烧技术研究进展[J]. 化工进展, 2022, 41(S1): 516-523.

FU Chunlong, WANG Songjiang, LI Guozhi. Research progress on combustion technology of coal gasification fine slag[J]. Chemical Industry and Engineering Progress, 2022, 41(S1): 516-523.

图/表 10

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样品	T_i /℃	T_h /℃	T_max /℃	W_max /%·min^-1	W_mean /%·min^-1	S /%²·℃^-3·min^-2
燃料煤	439.1	577.9	517.9	13.46	3.03	3.66×10^-7
FS	601.6	680.8	646.3	11.80	1.42	6.80×10^-8
劣质烟煤	493.3	619.7	563.1	8.89	1.63	9.61×10^-8
贫煤	514.2	642.0	580.0	11.50	2.24	1.52×10^-7
无烟煤	520.6	648.8	578.5	12.77	2.28	1.66×10^-7
石墨	778.8	948.1	873.2	9.34	1.62	2.63×10^-8

样品	T_i /℃	T_h /℃	T_max /℃	W_max /%·min^-1	W_mean /%·min^-1	S /%²·℃^-3·min^-2
燃料煤	439.1	577.9	517.9	13.46	3.03	3.66×10^-7
FS	601.6	680.8	646.3	11.80	1.42	6.80×10^-8
劣质烟煤	493.3	619.7	563.1	8.89	1.63	9.61×10^-8
贫煤	514.2	642.0	580.0	11.50	2.24	1.52×10^-7
无烟煤	520.6	648.8	578.5	12.77	2.28	1.66×10^-7
石墨	778.8	948.1	873.2	9.34	1.62	2.63×10^-8

样品	T_i /℃	T_h /℃	T_max /℃	W_max/%·min^-1	S /10^-8·%²℃^-3·min^-2
0~75μm	602.4	804.3	727.6	3.83	1.53
75~150μm	591.7	850.6	757.3	4.38	2.02
≥150μm	598.7	942.8	767.0	4.46	1.90
原始样品	596.2	931.1	762.4	3.95	1.53

样品	T_i /℃	T_h /℃	T_max /℃	W_max/%·min^-1	S /10^-8·%²℃^-3·min^-2
0~75μm	602.4	804.3	727.6	3.83	1.53
75~150μm	591.7	850.6	757.3	4.38	2.02
≥150μm	598.7	942.8	767.0	4.46	1.90
原始样品	596.2	931.1	762.4	3.95	1.53

煤种	T_i/℃	T_h/℃	T_max/℃	W_max/%·min^-1
烟煤	584	751	631	-8.812
FS	405	651	444	-7.207
烟煤90%+FS 10%	556	647	600	-8.309
烟煤80%+FS 20%	516	675	552	-7.682
烟煤70%+FS 30%	508	681	548	-7.566