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

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Upstream and downstream associated products
of coal-to-olefins
Coal-to-olefins is a chemical technology that uses coal as raw material to produce olefins. Olefin is a kind of important organic chemical raw materials, widely used in the production of plastics, rubber, fiber and other polymer materials and various chemicals. The upstream and downstream related products of coal to olefins mainly include the following aspects:

upstream products:

1. Coal: Coal is the main raw material of coal to olefins, which is converted into olefins through gasification, purification, synthesis and other processes.

2. Oxygen: In the process of coal gasification, a large amount of oxygen is required as a gasification agent to convert the carbon in the coal into syngas.

3. catalyst: in the process of coal to olefins, it is necessary to use a catalyst to promote the synthesis reaction of olefins.

downstream products:

1. Polyethylene (PE): Polyethylene is a widely used plastic that can be used to produce films, pipes, containers, etc. Coal to olefins can produce high density polyethylene and low density polyethylene.

2. Polypropylene (PP): Polypropylene is a thermoplastic with good mechanical properties and chemical stability. It can be used to produce parts in the fields of home appliances, automobiles, and construction.

3. Butene, butadiene and other chemicals: In the process of coal to olefins, chemicals such as butene and butadiene can be produced. These chemicals are important raw materials for the production of polymer materials such as rubber and synthetic fibers.

Generally speaking, the upstream and downstream related products of coal-to-olefins are very rich, involving a wide range of fields, and have high economic and social value. At the same time, with the continuous progress of technology and the improvement of environmental protection requirements, the technology and products of coal to olefins are also constantly updated and developed, and more upstream and downstream related products will emerge in the future.

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