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Device and method for improving output and quality of vinyl acetate produced by fluidized bed

A vinyl acetate, fluidized bed technology, applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc., can solve the problems affecting the production, quality, uneven gas distribution, poor fluidization state of vinyl acetate products, etc., To achieve the effect of reducing the blockage of the distribution plate holes in the fluidized bed reactor, reducing the impurity gas and reducing the impurity content

Pending Publication Date: 2019-03-15
INNER MONGOLIA MENGWEI TECH CO LTD +1
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Problems solved by technology

At the same time, if the vinyl acetate content in the circulating acetylene gas is high, it is easy to cause the catalyst and vinyl acetate to bond to block the distribution plate holes of the reactor, resulting in uneven gas distribution and poor fluidization state, forming a vicious cycle and increasing side reactions, such as acetone generation, Acetic anhydride generation, acetylene polymer generation, etc., seriously affect the production and quality of vinyl acetate products

Method used

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  • Device and method for improving output and quality of vinyl acetate produced by fluidized bed

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Embodiment Construction

[0036] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. This embodiment is implemented on the premise of the technical solution of the present invention, and provides detailed implementation modes and specific operation processes, but the protection scope of the present invention is not limited to the following described embodiment.

[0037] like figure 1 As shown, the present embodiment firstly sets the following device for improving the output and quality of vinyl acetate produced by fluidized bed: including acetic acid storage tank 1, the 1# pump 2, the acetic acid cooler 3, the reaction liquid cooler 4, the 1# regulating valve 5. The 2# pump 6, the reaction liquid buffer tank 7, the 2# regulating valve 8, the droplet separator 9, the three-stage gas separation tower 10 and the fluidized bed reactor 13;

[0038] The structure and function of the first section of the separation tower and the second secti...

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Abstract

The invention discloses a device and method for improving the output and the quality of vinyl acetate produced by a fluidized bed. The method is characterized in that mixed gas in a vinyl acetate synthesizing step is separated out by improving a process method and adding equipment and devices, namely recovering a vinyl acetate product, washing a light component impurity gas acetaldehyde in mixed reaction gas and cleaning acetylene gas. By separating the reaction gas in the vinyl acetate production process, the main product vinyl acetate can be recovered effectively, and side reactions of the light component gas in the vinyl acetate production process by the fluidized bed can be reduced greatly, therefore, the output and the quality of vinyl acetate are improved effectively.

Description

technical field [0001] The invention relates to a device and a method for improving the output and quality of vinyl acetate produced by fluidized bed. Background technique [0002] Vinyl acetate is an important organic raw material and one of the 50 most important organic chemical raw materials in the world. In practical application, vinyl acetate can mainly produce polyvinyl acetate and polyethylene by polymerizing itself or with other monomers. Derivatives such as alcohol, vinyl acetate-ethylene copolymer emulsion, vinyl acetate-vinyl chloride copolymer, polyvinyl nitrile comonomer and acetal resin, which are used in coatings, pastes, adhesives, vinylon, films, leather processing , synthetic fibers, soil improvement and other aspects have a wide range of uses. [0003] Since Beijing Dongfang Petrochemical Co., Ltd. (former Beijing Organic Chemical Plant) introduced the acetylene method fluidized bed technology in 1963, my country's vinyl acetate production process has dev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C67/04C07C67/48C07C69/15
CPCC07C67/04C07C67/48C07C69/15
Inventor 许献智李端忠胡俊腾莫声俊张明韩小龙孙广兵乔建光郜鹏飞孙志强
Owner INNER MONGOLIA MENGWEI TECH CO LTD
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