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[Chemical Knowledge]:What are the upstream raw materials for ethylene tar? What do the downstream products contain?

Ethylene tar is an important raw material in the production of chemical products, and its upstream and downstream related products are widely used. The following are some of the main upstream and downstream associated products of ethylene tar:

1. Upstream products:

(1) Petroleum: Ethylene tar is mainly obtained from the heavy fraction in the petroleum distillation process.

(2) Ethylene: Ethylene tar is a by-product of the ethylene cracking process.

2. Downstream products:

(1) Carbon black: Ethylene tar is an important raw material for the production of carbon black. high quality carbon black can be produced by pyrolysis of ethylene tar.

(2) Needle coke: Needle coke is a high-quality variety developed vigorously in carbon materials. Its appearance is silver-gray, porous solid with metallic luster. Its structure has obvious flow texture. Its pores are large and few and slightly oval. Its particles have a large aspect ratio. It has a fibrous or needle-like texture direction and feels lubricious, it is the raw material for the production of high-end carbon products such as ultra-high power electrodes, special carbon materials, carbon fibers and their composites.

(3) modified asphalt: modified asphalt is made of medium temperature asphalt as raw material. Ordinary medium temperature asphalt has high content of benzene series and low content of quinoline insoluble matter, which will affect the impregnation effect if it is directly used as impregnating agent. When it is used as anode paste binder, it will cause the characteristics of high sintering temperature and low softening point of anode paste.

above is only part of the ethylene tar upstream and downstream related products, in fact, the use of ethylene tar is very extensive, but also can produce many other chemicals.
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