Method for cooling ethylene oxide product of ethylene oxide/glycol device

Abstract

The invention relates to a method for cooling an ethylene oxide product of an ethylene oxide / glycol device, which comprises the following steps of: connecting an ethylene oxide product circulating water cooler, an ethylene oxide pipe distributing layer and a circulating water shell distributing layer to an ethylene oxide product delivery pump outlet of the traditional ethylene oxide / glycol device; connecting the ethylene oxide product circulating water cooler with an ethylene oxide product storing tank after connecting the ethylene oxide product circulating water cooler with an ethylene oxideproduct circulating refrigerant cooler; after cooling refined ethylene oxide at 45 DEG C to 28 DEG C by the circulating water cooler, delivering the cooled refined ethylene oxide to a tank area for cooling to minus 5 DEG C for storage by using freezing saline water at minus 15 DEG C; and reducing the storing temperature of a spherical tank material from original 0 DEG C to minus 5 DEG C. The invention solves the problem of potential safety hazard of pipeline blockage caused by material polymerization brought by higher storing temperature, ensures storing safety and saves a great deal of energy needed by deep cooling.

Description

technical field [0001] The invention relates to a cooling method for an ethylene oxide product of an ethylene oxide / ethylene glycol device. Background technique [0002] At present, in the process of the existing ethylene oxide / ethylene glycol plant, the ethylene oxide product is directly sent to the storage unit by the product delivery pump and stored in frozen brine, and passes through the cooler in the process of circulating with the circulating pump Supplement the cold capacity of the spherical tank. Since the vaporization temperature of ethylene oxide under normal pressure is 10.5°C, and the explosion limit is 3%-100%, the temperature of the ethylene oxide transported by the product pump is above 40°C, and there is a certain danger (vaporization, polymerization in the pipeline) etc.), and these higher temperature ethylene oxide materials need a large amount of frozen brine to cool to ensure that it has sufficient cooling capacity, which brings greater pressure to the r...

AI Technical Summary

Problems solved by technology

[0003] The purpose of this invention is to provide a kind of ethylene oxide product circulating water cooling system between the ethylene oxide product delivery pump outlet of ethylene oxide / ethylene glycol device and the ethylene oxide product storage tank, to solve the problem of epoxy In the process of transportation and storage of ethane products, there are potential safety hazards caused by insufficient cooling capacity, and a large amount of energy required for cryogenic cooling is saved.

Images