煤焦油的净化+文献综述
毕业论文关键词： 煤焦油；喹啉不溶物；净化；静置沉降法
Purification of coal tar
Abstract：Because of its composition and complexity, coal tar can be used in some special extraction and separation process.From the beginning of the last century, China and the world are facing the problem of environmental protection, improve the energy to improve the environment of the development of the economy has a great role.Coal tar in coal chemical industry and coking industry has a pivotal position, coal tar industry materials widely used in, synthetic fiber, rubber, plastic, high temperature materials and other important raw materials, can also be used to production of pharmaceuticals and pesticides.The most important impurities in the coal tar is the quinolineinsoluble matter (QI), which requires the removal of thequinoline insoluble matter (QI) as much as possible. The purification of coal tar is commonly used in the following several methods, static settlement method, hot melt filtration method, high temperature centrifugal method, solvent extraction method.These methods have their advantages but also disadvantages, cost, efficiency and other aspects of the space to improve. In this paper, based on the physical and chemical properties of the synthetic coal tar and the quinolineinsoluble matter, the method of low cost, simple process and good purification effect is found in this paper. We use the static settling method to experiment, change the solvent ratio, and get the coal tar,Through the analysis, the content of the quinoline insoluble matter (QI) in the coal tar was detected, and the coal tar quality index was SP:80-95, QI<0.5%.
Key Words: Coal tar; Quinoline insoluble; Purify ; Solvent deposition method
目录
1 绪论 .. 1
1.1 煤焦油 1
1.1.1 概述 .. 1
1.1.2 煤焦油的生产过程 .. 1
1.1.3 煤焦油的加工 3
1.1.4 煤焦油的质量指标 .. 4
1.1.5 国内外煤焦油加工产业概况 4
1.1.6 煤焦油的应用 4
1.2 喹啉不溶物(QI) . 5
1.2.1 喹啉不溶物(QI)的种类 . 5
1.2.2 喹啉不溶物(QI)的对煤焦油加工的危害 .. 5
1.3 煤焦油的净化技术 .. 6
1.3.1 热过滤法 . 6
1.3.2 溶剂离心法 .. 6
1.3.3 溶剂萃取法 .. 7
1.3.4 自然沉降法 .. 7
1.4选题的目的和研究内容 . 7
1.4.1 选题背景 . 7