Polymerization kettle for producing suspension polytetrafluoroethylene

Abstract

The invention discloses a polymerization kettle for producing suspension polytetrafluoroethylene, and relates to the field of polymerization kettles. The polymerization kettle comprises a kettle body,a stirrer shaft is installed at the inner lower part of the kettle body, a stirring blade is installed at the top of the stirrer shaft, and a machine seal system is arranged between the stirrer shaftand the kettle body; a motor system is installed at the bottom for driving, a material discharging ball valve is installed at the lower part of the kettle body, the exterior of a kettle wall is provided with a reaction kettle jacket, an upper refrigerant inlet and a lower refrigerant outlet, and energy released during a reaction can be taken away in time; a material inlet, a hand hole and a manhole are arranged in an upper seal head of the kettle body; two baffles are inserted into the kettle from the upper seal head of the kettle body in a suspended mode, and each baffle flange is arranged between one corresponding flange and one corresponding flange gland and is fixed through a bolt; and a reinforcing plate is welded to the upper portion of each baffle, and each baffle adopts an oval polished pipe. The polymerization kettle provided by the invention can reduce material sticking to the wall by adjusting the reaction rate through the baffles, and is easy to clean.

Description

technical field [0001] The invention relates to the technical field of polymerization kettles, in particular to a polymerization kettle used for the production of suspended polytetrafluoroethylene. Background technique [0002] At present, most of the polymerization kettles used for the production of suspended PTFE in the industry are vertical kettles. The suspended PTFE produced by the reaction is easy to stick to the wall and cannot be cleaned. These sticky wall materials will provide new materials for the next batch of reactions. The reaction point is easy to gather violently, which brings danger to production. In order to eliminate "swirling" and increase the material mixing effect, baffles can generally be installed around the wall of the reactor to convert the material tangential flow into axial flow or radial flow. But these baffles are fixed on the kettle wall and there is a dead angle, which makes it very easy for materials to stick to it and be difficult to clean....

AI Technical Summary

Problems solved by technology

However, these baffles are fixed on the kettle wall and there are dead angles, which can easily make the material stick to it and make it difficult to clean

It is often necessary to open the manhole after a few batches of reaction. Manually go down and take the scraper to remove the material. Frequent opening of the manhole to clean the polymerization kettle will affect the cleanliness of the product. There are potential safety hazards and low production efficiency.

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