A control and cooperative treatment system for unorganized waste gas emission of a delayed coking coke storage tank

Abstract

The invention discloses a control and cooperative treatment system for unorganized waste gas emission of a delayed coking coke storage tank. A coke storage tank, a sewage treatment tank, a top coke grabbing crown block, an open-air trestle of the crown block, an automobile transportation channel located beside the coke storage tank and a loading hopper in the delayed coking process are wrapped ina full-closed system of the coke storage tank, and the full-closed system comprises a coke storage tank sunlight film closing system, an in-shed ventilation system and an in-shed coke grabbing, unloading and dust suppression system. The coke storage tank sunlight film sealing system is a film-structure greenhouse. The in-shed coke grabbing, unloading and dust suppression system comprises a dust suppression fog gun used for spraying natural plant deodorization liquid to in-shed coke powder during coke grabbing and unloading. A waste gas collecting system comprises a draught hood, a resistance balancer, an electric air volume adjusting valve and a waste gas collecting pipe network; a waste gas treatment system comprises a fan, a cooling tower, a demister and a spray tower. According to the invention, the problem of disordered emission of delayed coking waste gas is solved, the waste gas control effect is good, the coverage area is wide, and the normal operation of the main production process is not influenced.

Description

technical field [0001] The invention belongs to the technical field of fugitive emission control and treatment of air pollutants, and more specifically, the invention relates to a control and collaborative treatment system for fugitive emission waste gas generated in a coke storage tank in a delayed coking process in the petrochemical industry. Background technique [0002] The delayed coking process is a thermal cracking process that converts vacuum residues into lighter oils and coke. During the production process, the residual coke in the coke tower is discharged to the coke pool through high-pressure hydraulic coke cutting. The cut coke and coke cutting water are discharged into the coke storage tank, and the material is picked up and the subsequent loading is carried out through the top driving. [0003] Delayed coking is one of the main production processes of coking plants in my country's petrochemical industry. At present, most of them adopt open treatment processes...

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Problems solved by technology

[0004] At present, the more effective solution in China is the closed decoking technology developed by Sinopec, which transforms the existing open pools and conveying equipment into closed equipment. Although this method can solve the problem of fugitive emission of waste gas, it is Large project volume, high investment cost, long transformation period, high system maintenance cost, and the particle size of the coke powder produced after transformation is too fine, the product price will be affected to a certain extent, and it is not accepted by most petrochemical plants in China

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