Environment-friendly ethylene oxide addition reaction system and use method thereof

Abstract

The invention discloses an environment-friendly ethylene oxide addition reaction system which comprises a reaction kettle body, the top of the reaction kettle body is provided with a feeding pipelineand an ethylene oxide pipeline, the bottom of the reaction kettle body is communicated with a discharging pipeline, the discharging pipeline is communicated with a circulating pipeline, and the top ofthe reaction kettle body is provided with a circulating feeding pipe connected with the circulating pipeline. A circulating pump and a heat exchanger are respectively arranged on the circulating pipeline, a ventilation ring pipe is arranged in the reaction kettle body, the ventilation ring pipe is connected with a first air inlet pipeline, a first control valve is arranged on the first air inletpipeline, and a ventilation hole is formed in the ventilation ring pipe. The invention also discloses a use method of the environment-friendly ethylene oxide addition reaction system. The use method comprises the steps: S1, carrying out feeding reaction; S2, circulating a material by a circulating pump; S3, after the reaction is finished, purging the circulating pipeline by a second inflating pipeline; S4, purging the inner wall of the reaction kettle by a first inflating pipeline; and S5, purging the circulating pipeline to discharge the material by a third inflating pipeline. Waste is reduced, the use amount of pure water is reduced, and the sewage amount is reduced.

Description

technical field [0001] The application relates to the field of ethylene oxide reaction devices, in particular to an environment-friendly ethylene oxide addition reaction system and its usage method. Background technique [0002] In the addition reaction production using ethylene oxide as raw material, the amount of sewage treatment is relatively large, mainly due to the variety of products. Every time a product is changed, the reactor must be cleaned with clean water. After cleaning, the aqueous solution becomes sewage. There are several tons, and dozens of tons of waste water are formed every day, which greatly increases the load of sewage treatment and increases the cost of sewage factory. Contents of the invention [0003] In order to reduce sewage in production, the application provides an environment-friendly ethylene oxide addition reaction system and its application method. [0004] In the first aspect, a kind of environment-friendly ethylene oxide addition reactio...

AI Technical Summary

Problems solved by technology

[0002] In the production of addition reaction using ethylene oxide as raw material, the amount of sewage treatment is relatively large, mainly due to the variety of products. Every time a product is changed, the reactor must be cleaned with clean water. After cleaning, the aqueous solution becomes sewage. There are several tons, and dozens of tons of waste water are formed a day, which greatly increases the load of sewage treatment and increases the cost of sewage leaving the factory.

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