Tail gas absorption device used in preparation of sodium pentachlorophenate

Abstract

A tail gas absorption device used in preparation of sodium pentachlorophenate comprises a reaction kettle, a phenol absorption pot and a pipeline. A material feeding inlet and a gas outlet are arranged on the top of the reaction kettle. A material discharge outlet is arranged on the bottom of the reaction kettle. A control panel is disposed on a surface of the reaction kettle. An electric valve is arranged on the gas outlet. A gas inlet is arranged on the bottom of a side wall of the phenol absorption pot and is communicated with the pipeline. A flow rate sensor is arranged on the pipeline. Both the flow rate sensor and the electric valve are electrically connected to the control panel. A gas discharge outlet is arranged on the top of the phenol absorption pot. The tail gas absorption device is simple in structure, is easy to user, can fully absorb free chlorine in HCl generated during a reaction of the sodium pentachlorophenate so that the HCl can be collected and reused. The tail gas absorption device can avoid environmental pollution and meanwhile can avoid product waste.

Description

(1) Technical field [0001] The invention relates to a chemical equipment, in particular to a tail gas absorption equipment prepared by sodium pentachlorophenate. (2) Background technology [0002] At present, when sodium pentachlorophenate is produced, it needs to undergo the reaction of phenol and chlorine. In this process, HCl will be discharged. However, the generated HCl also has a small amount of free chlorine. If it is directly discharged, it will cause damage to the environment. Recycling cannot be reused. Can fully absorb the free chlorine contained in the HCl that generates in the reaction of sodium pentachlorophenate on the market now, make HCl can be collected and utilized, avoid to cause harm to environment, avoid the tail gas absorption equipment that the sodium pentachlorophenate that causes product waste to prepare simultaneously also Not discovered, yet to be developed. (3) Contents of the invention [0003] In order to overcome the shortcomings of the ex...

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Problems solved by technology

[0002] At present, when sodium pentachlorophenate is produced, it needs to undergo the reaction of phenol and chlorine. In this process, HCl will be discharged. However, the generated HCl also has a small amount of free chlorine. If it is directly discharged, it will cause damage to the environment. Recycling can't be reused

Can fully absorb the free chlorine contained in the HCl that generates in the reaction of sodium pentachlorophenate on the market now, make HCl can be collected and utilized, avoid to cause harm to environment, avoid the tail gas absorption equipment that the sodium pentachlorophenate that causes product waste to prepare simultaneously also Not discovered, yet to be developed

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