|
|
|
 |
News>product of coal tar cleaning agent applied in coal chemical industry in 21st century |
product of coal tar cleaning agent applied in coal chemical industry in 21st century Source：Kandy chemicalDatetime：2014-01-15
Brief:coal chemical industry started in the second half of the 18th century, 19th century, formed a complete system of coal chemical industry. Into the 20th century, many changes to agricultural and forestry products as raw materials for the organic chemicals with coal as its raw material, coal chemical industry an important part of the chemical industry. After the second world war, rapid development of the petrochemical industry, many chemicals production using coal as raw material to oil and natural gas as raw material, thus weakening the status of coal chemical in the chemical industry. The chemical structure of organic matter in coal, is mainly based on aromatic fused ring as a unit core, connected by the key bridge, and macromolecular structure with various functional groups, Thong
|
|
|
