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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 saving operating costs and simple equipment

Inactive Publication Date: 2012-11-07
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

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Embodiment Construction

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

[0024] An emergency destruction device for TDI by-product hydrochloric acid tail gas, mainly comprising an alkali tank 1 and a Venturi tube 2, the alkali tank 1 and the Venturi tube 2 form a destruction circulation system, the alkali tank 1 and the Venturi tube 2 The destruction circulation system is constructed by the liquid caustic pipeline 6 and the post-absorption caustic pipeline 7 . The Venturi tube destroys the phosgene and chlorine in the hydrochloric acid tail gas, and achieves the effect 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 remote quick-opening valve groups, the TDI main device can destroy highly toxic gases such as phosgene an...

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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 todestroy 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 a hydrochloric acid tail gas emergency destruction device of a liquid chlorine production device and a control method thereof, in particular to a TDI by-product hydrochloric acid tail gas emergency destruction device and a control method thereof. Background technique [0002] During the manufacturing process of TDI (toluene diisocyanate), there will be chlorine and phosgene in the by-products of safety overpressure discharge and waste discharge from loading and unloading vehicles. It is directly discharged into the atmosphere, but this mode will destroy the environment and affect people's life safety if there is toxic phosgene in case of emergency; the other is to absorb chlorine and phosgene in alkali tanks , but there will be defects of incomplete absorption and overflow when the gas volume is large. Contents of the invention [0003] The present invention designs a TDI by-product hydrochloric acid tail gas emergency destr...

Claims

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Application Information

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Patent Type & Authority Patents(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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