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TDI byproduct hydrochloric acid tail gas emergency destruction device and control method thereof

A technology of by-product hydrochloric acid and tail gas, which is applied in separation methods, chemical instruments and methods, preparation of isocyanic acid derivatives, etc., can solve the problem that chlorine gas and phosgene cannot be safely treated effectively, and achieve the prevention of large-scale environmental pollution accidents, The effect of simple equipment and saving operating costs

Inactive Publication Date: 2010-10-13
蓝星化工有限责任公司
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Problems solved by technology

[0003] The present invention designs a TDI by-product hydrochloric acid tail gas emergency destruction device and its control method, which solves the technical problem that chlorine and phosgene in the existing TDI by-products cannot be safely disposed of effectively, especially in emergency situations

Method used

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  • TDI byproduct hydrochloric acid tail gas emergency destruction device and control method thereof
  • TDI byproduct hydrochloric acid tail gas emergency destruction device and control method thereof

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Embodiment Construction

[0023] Combine below figure 1 , the present invention is further described:

[0024] A kind of TDI by-product hydrochloric acid tail gas emergency destruction device, mainly comprises alkali tank 1 and venturi pipe 2, described alkali tank 1 and described venturi pipe 2 form a destruction circulation system, described alkali tank 1 and venturi pipe 2 The destruction circulation system is constructed by the liquid alkali pipeline 6 and the post-absorption alkali pipeline 7 . The venturi tube destroys the phosgene and chlorine in the hydrochloric acid tail gas, and achieves the effects of smaller volume, stronger absorption and simpler equipment than the packed spray tower.

[0025] The hydrochloric acid tail gas is controlled to enter the direct exhaust atmospheric pipeline 10 or the destruction circulation system through the remote quick-opening valve group. Due to the addition of the remote quick-opening valve group, the TDI main device can destroy the highly toxic gases su...

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Abstract

The invention relates to a TDI byproduct hydrochloric acid tail gas emergency destruction device and a control method thereof. The device mainly comprises an alkali tank and a Venturi tube, wherein the alkali tank and the Venturi tube form a destruction cyclic system, and the hydrochloric acid tail gas is controlled to enter a vertically arranged atmospheric pipe or the Venturi tube via a remote quick opening valve group. Because the remote quick opening valve group is added, the invention makes the TDI main device destroy phosgene, chlorine and other highly toxic gases which are difficult to destroy by water in the hydrochloric acid tail gas so as to effectively prevent large environmental pollution accidents.

Description

technical field [0001] The invention relates to an emergency destruction device of hydrochloric acid tail gas of a liquid chlorine production device and a control method thereof, in particular to an emergency destruction device of hydrochloric acid tail gas produced by TDI and a control method thereof. Background technique [0002] In the manufacturing process of TDI (Toluene Diisocyanate), there will be chlorine and phosgene discharged by safe overpressure and waste from loading and unloading vehicles in the by-products. It is directly discharged into the atmosphere, but in the event of an emergency, if there is toxic phosgene, it will damage the environment and affect people's life safety; the other is to absorb chlorine and phosgene into alkali tanks , but there will be defects of incomplete absorption and overflow when the gas volume is large. SUMMARY OF THE INVENTION [0003] The invention designs a TDI by-product hydrochloric acid tail gas emergency destruction devi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/78B01D53/68C07C265/14C07C263/10
Inventor 范君孙宝峰刘天佐崔建帮郭泰兴宋文辉
Owner 蓝星化工有限责任公司
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