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[Chemical Knowledge]：What are the upstream raw materials for olefins? What are the downstream products?

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Olefins play an important role in the field of raw materials for chemical production, and their upstream and downstream related products are extensive. This article will detail the upstream and downstream associated products of olefins, including upstream feedstocks, downstream products and production processes.

1. upstream raw materials

olefins upstream raw materials mainly include oil, natural gas and coal and other fossil energy. These fossil energy through cracking, reforming, synthesis and other processes, can produce a variety of olefins, such as ethylene, propylene, butene and so on. In addition, biomass energy can also be used as a raw material for olefins, which can be converted into olefins through biological fermentation, biocatalysis and other technologies. Downstream products of

2.

olefins have a wide range of downstream products covering many important chemicals. The following are some of the main downstream products:

1. Polyethylene (PE): Polyethylene generated by the polymerization of ethylene is a widely used plastic material, with excellent low temperature resistance, good chemical stability, and resistance to most The erosion of acid and alkali, insoluble in general solvents at room temperature, small water absorption, and excellent electrical insulation properties.
2. Polypropylene (PP): Polypropylene produced by the polymerization of propylene is a thermoplastic resin with high impact resistance, strong mechanical properties, and resistance to a variety of organic solvents and acid-base corrosion.
3. Styrene: ethylene and benzene through the alkylation reaction of styrene, styrene is an important monomer for synthetic rubber, plastics and resins, can also be used to produce styrene series resin and styrene butadiene rubber.
4. ethylene oxide: ethylene through the oxidation reaction of ethylene oxide, ethylene oxide is an important organic synthesis intermediates, can be used for the production of ethylene glycol, ethanolamine, ethylenediamine and other chemicals.

3. production process

olefin production process mainly includes cracking, separation and polymerization steps. First, fossil energy is cracked under high temperature and high pressure conditions to generate various olefin mixtures. Then, different types of olefins are separated by separation technology to obtain olefin monomers with higher purity. Finally, the olefin monomer is converted to a high molecular polymer by a polymerization reaction. The application of upstream and downstream related products of

4. olefin
The upstream and downstream related products of
olefin are widely used in various fields, such as plastics, rubber, fibers, coatings, chemicals, pharmaceuticals, etc. These products play an important role in our daily lives, such as food packaging, building materials, auto parts, medical equipment, etc.

In short, olefins play an important role in the field of raw materials for chemical production, and their upstream and downstream related products are extensive. With the continuous advancement of science and technology, the production process of olefins and the application of downstream products are also constantly developing, bringing more convenience and comfort to our lives.

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