VOCs containing industrial waste gas treatment process and system

A technology of industrial waste gas and treatment system, which is applied in the direction of air quality improvement, combustion method, lighting and heating equipment, etc. It can solve the problem of high energy consumption, achieve high purification efficiency, simple and compact structure, and avoid harmful gas escape.

Inactive Publication Date: 2016-12-21
ACRE COKING & REFRACTORY ENG CONSULTING CORP DALIAN MCC
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  • Claims
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Problems solved by technology

This method is completely incinerated for low-concentration waste gas, but the disadvantage is that the energy consumption is relatively high.

Method used

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  • VOCs containing industrial waste gas treatment process and system

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Embodiment Construction

[0039] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0040] Such as figure 1 Shown, a kind of treatment process containing VOCs industrial waste gas of the present invention, comprises the steps:

[0041] 1) The absorbent in the absorbent circulation tank 8 is pumped out by the absorbent circulation pump 9, and after being cooled to 30-80°C by the absorbent cooler 10, it is sent to the nozzle of the exhaust gas cleaner 7, and enters the exhaust gas scrubber. The absorbent pressure of the cleaner 7 is 0.4~1.0Mpa; the pressure of the waste gas inlet in the exhaust cleaner 7 is -1~-5kPa, and the industrial waste gas containing VOCs is sucked into the exhaust cleaner 7 by using this negative pressure, so that the exhaust cleaner 7 contains The VOCs industrial waste gas is fully mixed with the absorbent, and a physical and chemical reaction occurs;

[0042] 2) The mixture of industrial waste gas and ab...

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Abstract

The invention relates to VOCs containing industrial waste gas treatment process and system. An absorbent outlet is formed at the bottom of an absorbent circulating tank, a mixture inlet and an exhaust cleaning tower are arranged at the top of the absorbent circulating tank, the absorbent outlet is connected with a nozzle on the exhaust cleaning device by an absorbent delivery pipeline, and an absorbent circulating pump and an absorbent cooler are sequentially arranged on the absorbent delivery pipeline; the absorbent delivery behind the absorbent cooler is additionally connected with an absorbent inlet at the upper part of the exhaust cleaning tower; a waste gas inlet of the exhaust cleaning tower is connected with an industrial waste gas pipeline, and a mixture outlet of the exhaust cleaning tower is connected with the mixture inlet of the absorbent circulating tank; a waste gas outlet at the top of the exhaust cleaning tower is connected to a waste gas combustor at the bottom of a waste gas incinerator by a waste gas draught fan; and a chimney is arranged at the top of the waste gas incinerator. According to the invention, a method of combining absorption and incineration is adopted to effectively remove VOCs in industrial waste gas, the process is simple and the investment is low.

Description

technical field [0001] The invention relates to the technical field of industrial waste gas treatment, in particular to a process and system for treating industrial waste gas containing VOCs. Background technique [0002] VOCs (volatile organic compounds), that is, volatile organic compounds, is a general term for a class of chemical substances. VOCs are harmful substances to the human body. There are two main hazards to the human body: one is that the harmful components directly affect human health, and the other is that VOCs will form PM 2.5 precursors, which indirectly affect human health. [0003] The composition of VOCs is complex, mainly including alkanes, alkenes, aromatic hydrocarbons, halogenated hydrocarbons, oxygen-containing hydrocarbons, nitrogen hydrocarbons, sulfur hydrocarbons, low-boiling point polycyclic aromatic hydrocarbons, etc. The common types of VOCs are toluene, xylene, p-dichlorobenzene, ethylbenzene, styrene, formaldehyde, acetaldehyde and so on. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/78B01D53/44B01D53/96F23G7/06
CPCB01D53/44B01D53/78B01D53/96F23G7/06F23G2209/14B01D2252/205Y02A50/20
Inventor 孙虹单春华王英旭何宗保廖志强
Owner ACRE COKING & REFRACTORY ENG CONSULTING CORP DALIAN MCC
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