溶剂与溶胀促进剂对神华煤溶胀行为的影响

化工进展

溶剂与溶胀促进剂对神华煤溶胀行为的影响

戈军1，2，郭龙德1，郭智慧1，石斌1，张建芳1

1中国石油大学（华东）重质油国家重点实验室，山东青岛 266555；2中国神华煤制油化工工程公司，北京100011

出版日期:2010-10-05 发布日期:2010-10-05

Shenhua coal swelling with solvents and swelling promoters

GE Jun1，2，GUO Longde1，GUO Zhihui1，SHI Bin1，ZHANG Jianfang1

1State Key Lab of Heavy Oil，China University of Petroleum，Qingdao 266555，Shandong，China；2 China Shenhua Coal to Liquid and Chemical Co.，Beijing 100011，China

Online:2010-10-05 Published:2010-10-05

摘要/Abstract

摘要：

采用体积法研究了甲苯、四氢萘、甲醇、二甲亚砜、N,N-二甲基甲酰胺（DMF）和乙醇胺（MEA）5种纯溶剂及1∶1的MEA-DMF混合溶剂对神华烟煤的溶胀行为，考察了Fe(NO₃)₃、Fe₂(SO₄)₃和FeSO₄添加量为0.5%（以铁占煤质量计）作为溶胀促进剂的性能。结果表明：MEA-DMF混合溶剂的溶胀效果优于5种单一溶剂。铁盐Fe(NO₃)₃明显促进煤溶胀，在80 ℃，24 h和剂煤比5∶1条件下MEA-DMF混合溶剂与Fe(NO₃)₃协同可使溶胀率超过3.0。对溶胀处理后的神华煤FT-IR表明DMF、DMF-MEA溶胀处理以及与Fe(NO₃)₃协同溶胀处理后明显削弱了煤羟基氢键间的缔合作用，其中，经DMF-MEA与Fe(NO₃)₃协同溶胀处理的这一变化最为明显。

Abstract:

Swelling of Shenhua coal in toluene，tetralin，methanol，dimethyl sulfoxide，N,N- dimethylformamide（DMF）and monoethanolamine（MEA），as well as in a mixed solvent of DMF-MEA（1∶1）was investigated via the swelling volume method. Coal swelling improvement with 0.5% of Fe(NO₃)₃，Fe₂(SO₄)₃ and FeSO₄（based on Fe to coal）as swelling promoters were studied. Results showed that the coal swelling in the DMF-MEA mixed solvent was markedly better than any of the pure solvents. The swelling was clearly improved with Fe(NO₃)₃. The coal swelling ratio reached to over 3.0 with MEA-DMF and Fe(NO₃)₃ at 80 ℃ for 24 h and solvent to coal ratio of 5∶1. FT-IR of the swelled coal showed an improved coal hydrogen bonding dissociation. The coal hydrogen bonding dissociation was the most obvious in the swelling system of DMF-MEA and Fe(NO₃)₃.

戈军1，2，郭龙德1，郭智慧1，石斌1，张建芳1. 溶剂与溶胀促进剂对神华煤溶胀行为的影响 [J]. 化工进展.

GE Jun1，2，GUO Longde1，GUO Zhihui1，SHI Bin1，ZHANG Jianfang1. Shenhua coal swelling with solvents and swelling promoters[J]. Chemical Industry and Engineering Progree.