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VOCs (volatile organic compounds) general factory waste gas classified collection and treatment system

A treatment system and collection system technology, which is applied in the field of VOCs common factory waste gas classification collection and treatment system, can solve the problems of inapplicable VOCs common factory waste gas treatment, unfavorable common factory operation and promotion, short service life of the treatment system, etc., to achieve purification Remarkable effect, reducing fugitive dispersion and ensuring service life

Pending Publication Date: 2022-07-08
中山市大卉包装材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If a single VOCs treatment technology is used to treat waste gas in a centralized manner, there will be problems such as low treatment efficiency and short service life of the treatment system; using a combined process to centrally treat waste gas will face problems such as high investment costs, difficult operation and maintenance, and complicated operations, which is not conducive to Operation and Promotion of Generic Factory
The direct combustion method has the advantages of simplicity, high efficiency, and long service life, but it has potential safety hazards such as flammability and explosion, and is not suitable for waste gas treatment of VOCs common factories.

Method used

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  • VOCs (volatile organic compounds) general factory waste gas classified collection and treatment system

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The invention is applied to common factories in the packaging and printing industry, and gas-fired boilers are selected. The boiler combustion temperature is 900°C, the flue gas temperature is 400°C, and the initial concentration of flue gas pollutants is CO 5000mg / m 3 , NOx 350mg / m 3 , particulate matter 80mg / m 3 , heavy metal 5mg / m 3 , the initial concentration of waste gas pollutants is VOCs 2000ppm, CO 500mg / m 3 , particulate matter 70mg / m 3 , heavy metal 3mg / m 3 , oil mist 15mg / m 3 , the exhaust gas humidity is 10%, and the VOCs are mainly alkanes.

[0037] The flue gas passes through the flue to the heat exchange device for heat exchange. After the heat exchange, the flue gas is cooled to 50 °C, and then enters the medium temperature catalytic system after being dedusted by the dust removal system. The reaction temperature of the system is 250 °C. The emission concentration of flue gas after purification is CO 150mg / m 3 , NOx 10mg / m 3 , particulate matter...

Embodiment 2

[0039] The invention is applied to common factories in the industrial coating industry, and oil-fired boilers are selected. 3 , NOx 450mg / m 3 , particulate matter 60mg / m 3 , heavy metal 6mg / m 3 , the initial concentration of waste gas pollutants is VOCs 2500ppm, CO 1000mg / m 3 , particulate matter 70mg / m 3 , heavy metal 3mg / m 3 , oil mist 20mg / m 3 , the exhaust gas humidity is 8%, and the VOCs are mainly olefins.

[0040] The flue gas passes through the flue to the heat exchange device for heat exchange. After the heat exchange, the flue gas is cooled to 100 °C, and then enters the medium temperature catalytic system after being dedusted by the dust removal system. The reaction temperature of the system is 350 °C. The emission concentration of flue gas after purification is CO 40mg / m 3 , NOx 9mg / m 3 , particulate matter 1.2mg / m 3 , heavy metal 0.12mg / m 3 . At the same time, the production waste gas is collected by the overall air exchange + gas collecting hood and se...

Embodiment 3

[0042] The invention is applied to common factories in the furniture manufacturing industry, and a special biomass-fired boiler + biomass-fired gasifier is selected. The average combustion temperature of the boiler is 1000 °C, the average flue gas temperature is 450 °C, and the average initial concentration of flue gas pollutants is CO 2300mg / m 3 , NOx 410mg / m 3 , particulate matter 100mg / m 3 , heavy metal 12mg / m 3 , the initial concentration of production waste gas pollutants is VOCs 2300ppm, CO 500mg / m 3 , particulate matter 150mg / m 3 , heavy metal 6mg / m 3 , oil mist 10mg / m 3 , the exhaust gas humidity is 9%, and the VOCs are mainly alkanes and alkynes.

[0043] The flue gas passes through the flue to the heat exchange device for heat exchange. After the heat exchange, the flue gas is cooled to 70 °C, and then enters the medium temperature catalytic system after being dedusted by the dust removal system. The reaction temperature of the system is 300 °C The pollutants re...

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Abstract

The invention belongs to the technical field of air pollution control, and discloses a VOCs general factory waste gas classified collection and treatment system. The system is designed according to the characteristics that VOCs general factory waste gas is multiple in variety, complex in component and wide in concentration range, volatile organic compounds, volatile stink organic compounds, oil mist, particulate matter, nitric oxide, carbon monoxide, heavy metal and other pollutants in production waste gas and boiler flue gas are collected and treated in a classified mode, and the purification efficiency of the system reaches 95% or above. The invention pays attention to the pertinence and safety of the treatment process in design, solves the problem of treatment of multi-type, multi-concentration and multi-displacement waste gas of VOCs common factories, realizes efficient purification of various gaseous pollutants, has the advantages of low energy consumption, long service life, no secondary pollution and the like, has the advantages of simplicity, low investment cost, wide application range and the like in the aspect of investment and operation, and is suitable for industrial production. The method is suitable for common factory waste gas treatment in industrial coating, packaging and printing, furniture manufacturing and other industries.

Description

technical field [0001] The invention belongs to the technical field of air pollution control, and in particular relates to a VOCs common factory waste gas classification collection and treatment system. Background technique [0002] The high-efficiency treatment technologies for VOCs mainly include direct combustion method, adsorption concentration oxidation technology, catalytic combustion technology, regenerative incineration technology, oxidation absorption technology and microbial purification technology. VOCs common factories involve multiple process links, and the exhaust gas discharged has many types, complex components, and a wide range of concentrations. The exhaust gas also contains dangerous gases. If a single VOCs treatment technology is used for the centralized treatment of waste gas, problems such as low treatment efficiency and short service life of the treatment system will occur; the use of a combined process for the centralized treatment of waste gas will f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/047B01D53/06B01D53/86B01D53/44B01D53/56B01D53/62B01D53/64
CPCB01D53/06B01D53/047B01D53/869B01D53/8687B01D53/8625B01D53/864B01D53/8665B01D2257/708Y02A50/20
Inventor 袁永棋陈雄波洪伟刘莹林泽健袁艳芳魏锦维陈阁香黄仁桦彭蜜权黎春树
Owner 中山市大卉包装材料有限公司
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