Method and device for delaying coking unwatering cyclone decoking

Abstract

The invention provides a method and a device for delaying coking unwatering cyclone decoking with less investment, low energy consumption and high decoking efficiency. The method for delaying coking unwatering cyclone decoking comprises the following steps: settling separation, one-stage or two-stage or multistage cyclone decoking, and effluent oil separation. The method and the device for delaying coking unwatering cyclone decoking has the following advantages that: the separation efficiency is high; the separation precision of unwatering fine coke solid particles is 5 microns; the removal efficiency of particles with the separation precision of 5 microns or more is more than 95%; other solid particle impurities are removed while the fine coke solid particles are removed; the pressure loss is small; the operation is simple and convenient; the operation cost is low; the device has simple structure and occupies small area.

Description

technical field The invention belongs to the technical field of chemical engineering and environmental protection, and relates to a method for removing coke powder solid particles in sewage, in particular to a treatment method for coke-containing sewage in a delayed coking venting water system, and a device for implementing the method. Background technique The delayed coking process is a major process in petroleum coking. This process is a process in which oil refineries use thermal cracking technology to upgrade and convert residual oil (such as atmospheric residual oil, vacuum residual oil, etc.) into gas, liquid products and solid petroleum coke of concentrated carbon substances. In order to control pollution and increase the stripping yield, the delayed coking unit is equipped with a gas venting system: after the coke tower is formed and before decoking, it is necessary to release the pressure and blow steam into the tower, and then inject water to cool it. In this proc...

AI Technical Summary

Problems solved by technology

In short, due to the above-mentioned problems in the prior art, the problem of scientific purification of sewage in the venting system of the delayed coking unit has not been solved so far, and it is far from meeting the expectations of the industrialization of clean production in the petrochemical industry.

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