Functional groups and pyrolysis characteristics of fine gasification ashes and raw coals

doi:10.11949/j.issn.0438-1157.20141407

CIESC Journal ›› 2015, Vol. 66 ›› Issue (4): 1449-1458.DOI: 10.11949/j.issn.0438-1157.20141407

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Functional groups and pyrolysis characteristics of fine gasification ashes and raw coals

PAN Chanchan, LIU Xia, HUO Wei, GUO Xiaolei, GONG Xin

Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, Shanghai Engineering Research Center of Coal Gasification, East China University of Science and Technology, Shanghai 200237, China

Received:2014-09-18 Revised:2014-12-22 Online:2015-04-05 Published:2015-04-05
Supported by:
supported by the Sinopec Scientific and Technological Development Projects (412052).

煤气化细灰及其原煤的热解特性与官能团特征

潘婵婵, 刘霞, 霍威, 郭晓镭, 龚欣

华东理工大学煤气化及能源化工教育部重点实验室, 上海市煤气化工程技术研究中心, 上海 200237

通讯作者: 龚欣
作者简介:潘婵婵(1990-),女,硕士研究生。
基金资助:
中石化科技开发项目(412052)。

Abstract

Abstract:

Raw coals as well as fine gasification ashes from pulverized coal gasifier and coal water slurry (CWS) gasifier were studied by proximate analysis, ultimate analysis, FTIR and TG-MS to determine the characteristics of structure and pyrolysis behavior of fine gasification ashes and raw coals with different coal gasification technologies. Some volatile matter remained in fine gasification ash after coal gasification, and the volatile matter content of ash was related to the gasification technology. During gasification, part of the functional groups kept undecomposed and rearrangement of molecular structures caused formation of some relatively stable functional groups, such as phenolic aldehyde, carbonate minerals and oxy-compound structures.

Key words: gasification, fine ash, TG-MS, FTIR, functional groups, pyrolysis

摘要：

对气流床水煤浆气化细灰和粉煤气化细灰及其原煤的热解特性与官能团特征进行研究,结合工业分析、元素分析、红外光谱(FTIR)方法以及热重-质谱联用(TG-MS)技术,分析了两种气化工艺所得细灰的特性,以及细灰与原煤官能团结构特征的差异。结果表明,气化细灰在经历煤气化过程后仍有部分挥发分未完全分解,细灰中的挥发分含量与其气化工艺有关;煤气化过程中,部分官能团未分解,并可能有部分官能团重排生成了较稳定的含氧化合物等新官能团。

关键词: 气化, 细灰, 热质联用, 红外光谱, 官能团特征, 热解

CLC Number:

TQ546

PAN Chanchan, LIU Xia, HUO Wei, GUO Xiaolei, GONG Xin. Functional groups and pyrolysis characteristics of fine gasification ashes and raw coals[J]. CIESC Journal, 2015, 66(4): 1449-1458.

潘婵婵, 刘霞, 霍威, 郭晓镭, 龚欣. 煤气化细灰及其原煤的热解特性与官能团特征[J]. 化工学报, 2015, 66(4): 1449-1458.

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Functional groups and pyrolysis characteristics of fine gasification ashes and raw coals

煤气化细灰及其原煤的热解特性与官能团特征

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