Novel polymerization reaction vessel

Abstract

The invention discloses a novel polymerization reaction vessel, comprising a top manhole, a vessel body, an inner jacket, a polymerizer stirring and transmission unit, wherein the top manhole is directly arranged on the vessel body without pup joint, thus the problem of easy fouling of the manhole pup joint is solved. The diameter of the vessel body is 4200-4400 mm, and the height of the vessel body is 6900-8100 mm. The inner jacket polymerizer is suitable for the polymerizer which is larger than 100m<3>, preferably 106m<3>, 127m<3>, 135m<3> and 143m<3>. The vessel body strength, inner wall polish, anti-stick performance of the novel polymerization reaction vessel can all meet the requirement of practical production, and are better than general inner jacket polymerizers. According to the invention, the heat transfer coefficient of the polymerizer is raised to 1100 w / (m<2>.K) from 600 w / (m<2>.K) by the inner jacket; the production power of single vessel is raised to 45000-50000 tons / year from 40000-45000 tons / year; for a device having the production power of 250000 tons / year, 6 polymerizers are needed, thus the production power can be raised by about 30000 tons / year; the price of polyvinyl chloride is about 8000 yuan / ton, thus 0.24 billion yuan more can be achieved in one year.

Description

technical field [0001] The invention belongs to the field of chemical equipment, in particular to a polymerization reactor used for polyvinyl chloride production. Background technique [0002] With the continuous development of the suspension polyvinyl chloride industry, its production scale has continued to expand, from 100,000 to 200,000 t / a to 400,000 to 800,000 t / a. The core equipment of polyvinyl chloride production is the polymerization kettle, and increasing the production capacity of a single polymerization kettle is the bottleneck of the expansion of the production scale of polyvinyl chloride; the continuous expansion of the volume of the polymerization kettle, from 30m 3 to 45m 3 , to 70m 3 , expanding to 100m 3 above, now 100m 3 The polymerization kettle with a volume of more than 100m is the mainstream of application. How to increase the 100m 3 The capacity of polymerizers with volumes above and above is the focus of current research, while traditional large...

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Problems solved by technology

[0010] The present invention uses the inner jacket structure for large-scale polymerization reactors for the first time, and overcomes the technical problems faced by general inner jacket polymerization reactors, such as difficult mechanical manufacturing process, too thick wall of the kettle, easy to stick to the kettle, easy to knot To solve the problems of scale and other problems, a new type of inner jacket large-scale polymerization reactor with strong heat exchange capacity is provided

[0011] A novel polymerization reaction kettle of the present invention includes a manhole at the top of the kettle, a kettle body, an inner jacket, a stirring and transmission device for the polymerization kettle, wherein the manhole at the top of the polymerization kettle is directly arranged on the kettle body without a short joint, which solves the problem of people The problem of easy fouling of hole pup joints

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