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

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Ethylene tar-starting material plays an important role in the field of raw materials for chemical production, and its upstream and downstream related products are rich and diverse. The following are some common upstream and downstream associated products:

1. Upstream products:

(1) Petroleum hydrocarbons: ethylene tar-starting materials are mainly obtained by cracking petroleum hydrocarbons, so petroleum hydrocarbons are the main upstream raw materials.

(2) Natural gas: Part of the ethylene tar-starting material can also be prepared by cracking natural gas.

2. Downstream products:

(1) benzene, toluene, xylene and other aromatic products: ethylene tar-the starting material is rich in aromatic components. Through further fractionation and treatment, benzene, toluene, xylene and other important aromatic products can be obtained. These products are widely used in plastics, rubber, fibers, solvents and other fields.

(2) Carbon black: Ethylene tar-driving material can be used as the raw material of carbon black, and carbon black products of different specifications and uses are prepared by pyrolysis or gasification processes. Carbon black is widely used in tires, plastics, inks and other fields.

(3) Needle coke: Ethylene tar-starting material can also be used to produce needle coke. Needle coke is a high-performance carbon material with high thermal stability and high conductivity. It is widely used in electrodes, special ceramics and other fields.

(4) naphthalene, anthracene and other fused ring aromatics: ethylene tar-driving material also contains naphthalene, anthracene and other fused ring aromatics, these compounds can be used in the production of dyes, pesticides, pharmaceutical intermediates and other products.

In short, ethylene tar-starting material plays an important role in the field of chemical production raw materials, and its upstream and downstream related products are extensive, which is of great significance to promote the development of the chemical industry.

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