[1]殷俊平,钟文琪,周冠文,等.半焦加压燃烧的污染物排放及灰渣特性[J].东南大学学报(自然科学版),2018,48(2):232-239.[doi:10.3969/j.issn.1001-0505.2018.02.007]
 Yin Junping,Zhong Wenqi,Zhou Guanwen,et al.Characteristics on pollutant emission and ashin using semi-coke pressurized combustion[J].Journal of Southeast University (Natural Science Edition),2018,48(2):232-239.[doi:10.3969/j.issn.1001-0505.2018.02.007]
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半焦加压燃烧的污染物排放及灰渣特性()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
48
期数:
2018年第2期
页码:
232-239
栏目:
化学化工
出版日期:
2018-03-20

文章信息/Info

Title:
Characteristics on pollutant emission and ashin using semi-coke pressurized combustion
作者:
殷俊平钟文琪周冠文刘倩窦元元
东南大学能源热转换及其过程测控教育部重点实验室, 南京 210096
Author(s):
Yin Junping Zhong Wenqi Zhou Guanwen Liu Qian Dou Yuanyuan
Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, Nanjing 210096, China
关键词:
加压煤分级转化 半焦 加压燃烧 污染物排放特性 灰渣特性
Keywords:
pressurized coal grading conversion semi-coke pressurized combustion pollutant emission characteristics ash characteristics
分类号:
TQ534
DOI:
10.3969/j.issn.1001-0505.2018.02.007
摘要:
为研究煤加压分级转化中的半焦燃烧过程,建立了半焦加压燃烧机理实验研究系统.以陕西黑龙沟煤半焦为对象,研究了燃烧压力(0.1~0.5 MPa)、半焦种类(煤气和N2下热解所得)、半焦粒径(0~3和0~6 mm)对半焦燃烧污染物排放和灰渣矿物转化的影响.结果表明,随着燃烧压力的升高,碳氧化物排放量增多,NO和SO2减少,NO排放浓度随压力升高呈多峰分散分布,SO2排放滞后且峰值减小,半焦粒径越大,半焦燃烧产生的CO2和NO越多,CO和SO2越少,煤气气氛热解所得半焦在燃烧时释放出的4种污染物均略大于氮气气氛.同时,随着压力的升高或半焦粒径的减小,由于半焦燃烧过程由非均相燃烧向均相燃烧过渡,灰渣中高温矿物减少,低温矿物增多,不同气氛下制得的半焦燃烧灰渣特性差别很小.
Abstract:
To investigate the semi-coke combustion process of coal pressurized grading conversion, using Shanxi Heilonggou semi-coke as an experimental material, an experimental system of semi-coke pressurized combustion was established to study the effects of combustion pressures(0.1 to 0.5 MPa), semi-coke varieties(prepared in gas and N2 atmosphere)and semi-coke particle size(0 to 3 mm and 0 to 6 mm)on the pollutant emission and mineral conversions. The results show that with the increase of the combustion pressure, the emission of carbon oxides rises and NO and SO2 drop. The NO emission concentration distributes in a multi peak distribution when the pressure increases, and the SO2 emission lags behind and the peak value decreases. With the increase of the semi-coke particle size, CO2 and NO produced during the semi-coke combustion increase, and CO and SO2 decrease. Emissions of these four pollutants during the combustion of semi-coke prepared by coal pyrolysis in gas atmosphere are more than those prepared in N2 atmosphere. Meanwhile, as the pressure increases or the semi-coke particle size decreases, high temperature minerals in ash decline and low temperature minerals rise resulting in that the combustion of semi-coke gradually transforms from heterogeneous combustion to homogenous combustion. No significant difference between two different kinds of semi-coke ash is observed.

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相似文献/References:

[1]段钰锋,周毅,陈晓平,等.煤气化半焦的孔隙结构[J].东南大学学报(自然科学版),2005,35(1):135.[doi:10.3969/j.issn.1001-0505.2005.01.029]
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备注/Memo

备注/Memo:
收稿日期: 2017-09-09.
作者简介: 殷俊平(1993—),男,硕士生;钟文琪(联系人),男,博士,教授,博士生导师,wqzhong@seu.edu.cn.
基金项目: 国家重点研发计划资助项目(2016YFB0600802)、江苏省环保科研课题资助项目(2015018).
引用本文: 殷俊平,钟文琪,周冠文,等.半焦加压燃烧的污染物排放及灰渣特性[J].东南大学学报(自然科学版),2018,48(2):232-239. DOI:10.3969/j.issn.1001-0505.2018.02.007.
更新日期/Last Update: 2018-03-20