Sulfonation reaction tail gas processing apparatus and application thereof

A technology for sulfonation reaction and treatment device, which is applied in combination devices, chemical instruments and methods, and dispersed particle separation, etc., can solve the problems of polluted environment and low removal rate of oil mist from exhaust gas, and achieves no secondary pollution and shortens the reaction. Residence time, the effect of reducing reaction losses

Active Publication Date: 2013-03-06
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a treatment device for tail gas of sulfonation reaction and its application method. In order to solve the existing technical problems such as low removal rate of tail gas oil mist and environmental pollution, it overcomes the deficiencies of the prior art and can effectively remove Oil mist in the tail gas of sulfonation reaction

Method used

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  • Sulfonation reaction tail gas processing apparatus and application thereof
  • Sulfonation reaction tail gas processing apparatus and application thereof
  • Sulfonation reaction tail gas processing apparatus and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The particles after the spray mist film sulfonation reaction are fine, with a particle size of 1 μm and a specific resistance of 10 3 Ohm cm, density 895kg / m 3 , SO 3 The acidic sulfonated tail gas with a gas content of 0.3wt% enters the alkali washing tank 6 from the air inlet pipe 3; the alkali aqueous solution is transported from the bottom of the tank to the alkali spray on the upper part of the tank with a concentration of 8wt% through the metering pump 2 through the alkali solution port 1 The head 4 is sprayed downwards and fully contacted with the tail gas of the sulfonation reaction in reverse to absorb and remove the residual sulfur trioxide until the SO in the tail gas after alkali washing 3 Until the gas concentration is less than 0.08wt%, the solution after alkali washing can be recycled through the alkali liquor circulation outlet 14. The tail gas after alkali washing is discharged from the tail gas outlet 5, and enters the cyclone separator 11 tangential...

Embodiment 2

[0023] The particles after the continuous tank sulfonation reaction are fine, with a particle size of 1 μm and a specific resistance of 10 3 Ohm cm, density 887.9kg / m 3 , SO 3The acidic sulfonated tail gas with a gas content of 3wt% enters the alkali washing tank 6 from the air inlet pipe 3; the alkali aqueous solution is transported from the alkali solution port 1 to the alkali spray head on the upper part of the tank through the metering pump 2 with a concentration of 10wt% 4. Spray downwards and fully contact with the tail gas of the sulfonation reaction in reverse to absorb and remove the residual sulfur trioxide until the SO in the tail gas after alkali washing 3 Until the gas concentration is less than 0.08wt%, the solution after alkali washing can be recycled through the alkali liquor circulation outlet 14. The tail gas after alkali washing is discharged from the tail gas outlet 5, and enters the cyclone separator 11 tangentially through the inlet pipe 13 at a flow ra...

Embodiment 3

[0025] The particles after sulfur trioxide membrane sulfonation reaction are fine, with a particle size of 1 μm and a specific resistance of 10 3 Ohm cm, density 887.6kg / m 3 , SO 3 The acidic sulfonated tail gas with a gas content of 1.2wt% enters the alkaline washing tank 6 from the air inlet pipe 3; the alkaline aqueous solution is transported from the bottom of the tank to the lye on the upper part of the tank through the metering pump 2 with a concentration of 9 wt% from the lye port 1 The spray head 4 is sprayed downwards and fully contacted with the tail gas of the sulfonation reaction in reverse to absorb and remove the residual sulfur trioxide until the SO in the tail gas after alkali washing 3 Until the gas concentration is less than 0.08wt%, the solution after alkali washing can be recycled through the alkali liquor circulation outlet 14. The tail gas after alkali washing is discharged from the tail gas outlet 5, and enters the cyclone separator 11 tangentially thr...

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Abstract

The invention relates to a sulfonation reaction tail gas processing apparatus and an application thereof. According to the invention, acidic sulfonation reaction tail gas enteres an alkaline wash tank; an alkali aqueous solution is delivered from the tank bottom to the alkali solution spray head on the upper part of the tank, and is jetted downwards; the alkali aqueous solution reversely contact the sulfonation reaction tail gas, such that sulfur trioxide is absorbed; solution obtained after alkaline wash is recycled; tail gas obtained after alkaline wash tangentially enters a cyclone separator with a flow rate of an empty-tower air flow speed of 3-4m / s; larger oil droplet particles accumulate at the bottom of the separator, and are discharged; tiny oil droplets rises; liquid foam and solid particles are separated from gas at a barb of an embedded baffle; gas containing tiny oil mist enters an electrostatic purifier, and rest oil mist is absorbed by high-voltage electrostatic field; and clean air is discharged. With the apparatus and the application provided by the invention, tail oil mist obtained after jet-type, continuous-tank and membrane-type sulfonation reactions can be effectively removed, wherein a removal rate is no lower than 99%. The apparatus and the application have the advantages of low energy consumption, no secondary pollution, convenient installation, low cost, and the like.

Description

technical field [0001] The invention relates to a technology for sulfonation reaction of petroleum fractions, more specifically, to a treatment device for tail gas of sulfonation reaction of petroleum fractions and a method for using the same. Background technique [0002] Sulfonation reaction is the reaction of introducing sulfonic acid groups into organic molecules, and is an important reaction type for the synthesis of various organic chemicals. During the sulfonation reaction, the sulfur atom of the sulfonic acid group is connected with the carbon atom in the organic molecule, and the obtained product is a sulfonic acid compound. Because the sulfonation reaction raw materials are too active, the reaction is violent during the sulfonation reaction process, and the instantaneous heat release is large, forming sulfur trioxide waste gas, waste water or waste acid residue, causing environmental pollution. At the same time, a large amount of oil mist is generated. The content...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D50/00B01D45/16B01D53/78B01D53/50
Inventor 牛春革甄新平方新湘周华陈永立朱海霞白云
Owner PETROCHINA CO LTD
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