Phenol sodium salt treatment method and device

Abstract

The embodiment of the invention discloses a phenol sodium salt treatment method. By using the phenol sodium salt treatment method, carbon dioxide in power generating tail gas is dissolved in water to generate carbonic acid, and the phenol sodium salt is neutralized by the carbonic acid. The embodiment of the invention also discloses a phenol sodium salt treatment device. The phenol sodium salt treatment device comprises a reaction tower and a conduit, wherein the phenol sodium salt is available in the reaction tower; the conduit is connected with the reaction tower and used for introducing the carbon dioxide into the reaction tower; and the carbonic acid is generated by dissolving the carbon dioxide in the water so as to neutralize the phenol sodium salt. By using the method, the carbon dioxide in various industrial waste gases can be effectively utilized, in particular, the carbon dioxide in the power generating tail gas can be effectively utilized so as to avoid the problem that greenhouse effect is caused and the earthly environment is damaged by directly discharging the carbon dioxide into the atmosphere in the past and to avoid the problems of expensive cost and unsafety in operation because of using the dilute sulfuric acid as the neutralization solution in the traditional phenol sodium salt treatment.

Description

【Technical field】 [0001] The invention belongs to the technical field of coal chemical industry, and in particular relates to a phenol sodium salt treatment method and a phenol sodium salt treatment device in the process of producing dephenolized oil from coal tar. 【Background technique】 [0002] In the process of producing dephenolized oil from coal tar, a large amount of phenolic sodium salt will be produced, which is weakly alkaline and needs to be neutralized before use. [0003] In the current technology, dilute sulfuric acid is usually used for neutralization, but dilute sulfuric acid is highly corrosive, unsafe to operate, and has high production costs. [0004] The main components of power generation tail gas are water vapor and carbon dioxide. The traditional treatment method is to empty the power generation tail gas at high altitude. However, the massive discharge of carbon dioxide causes the greenhouse effect, destroys the earth's environment, and is not conduciv...

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Problems solved by technology

[0005] The technical problem solved by the embodiments of the present invention is to provide a method and device for treating sodium phenate, so as to solve the unsafe and high-cost problems of using dilute sulfuric acid for neutralization in the prior art, and make full and reasonable use of carbon dioxide, avoiding the In the past, the direct emission of carbon dioxide into the atmosphere caused the greenhouse effect and broke the problem of the earth's environment.

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