Oxidation of YangQuan anthracite in alkaline medium

摘要：

The purpose of this paper is introducing a method for producing aromatic poly carboxylic acids from coal. Yang Quan anthracite was subjected to oxygen-oxidation in an aqueous solution of potassium hydroxide to produce coal acids. The coal oxidation was performed in a two-liter autoclave and the initial oxygen pressure, reaction time, reaction temperature, the alkali/coal ratio and agitation frequency were changed respectively to study the influence on the yield of coal acids. It was found that reaction temperature and ratio of alkali to Coal are important conditions on the yield of CA. The optimum action conditions are: reaction temperature: 270 ℃, oxygen initial pressure: 5.5MPa, ratio alkali to Coal: 2.8:1,reaction time: 2hr, agitation frequency: 80r/min. The highest yield of coal acid under the optimum reaction conditions is 49.2 %(daf), which contains 56.3% benzene poly carboxylic acids.

关键词： anthracite Oxidation Coal acids benzene poly carboxylic acids

作者: PeiYong Li Jun Guan QiuMin Zhang DeMin He ShuChang Zhao

作者单位: Institute of Coal Chemical Engineering, Dalian University of Technology, 129 Street,Dalian 116012, C State Key Laboratory of Fine Chemical, Dalian University of Technology, 129 Street, Dalian 116012, C

会议类型: 国际会议

会议名称: The 12th Asian Pacific Confederation of Chemical Engineering Congress(第十二届亚太化工联盟大会暨化工展览会)

会议地点: 大连

会议语种:英文

在线出版日期: 2008-08-04（万方平台首次上网日期，不代表论文的发表时间）