CN105536526A - Wet chemical oxidation waste gas treatment device - Google Patents

Wet chemical oxidation waste gas treatment device Download PDF

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Publication number
CN105536526A
CN105536526A CN201610101371.8A CN201610101371A CN105536526A CN 105536526 A CN105536526 A CN 105536526A CN 201610101371 A CN201610101371 A CN 201610101371A CN 105536526 A CN105536526 A CN 105536526A
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CN
China
Prior art keywords
bed
filler
packing
catalytic
waste gas
Prior art date
Application number
CN201610101371.8A
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Chinese (zh)
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CN105536526B (en
Inventor
张仁熙
刘全军
陆璠
张新忠
朱玲
袁圆
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常州大恒环保科技有限公司
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Priority to CN201610101371.8A priority Critical patent/CN105536526B/en
Publication of CN105536526A publication Critical patent/CN105536526A/en
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Publication of CN105536526B publication Critical patent/CN105536526B/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86Catalytic processes
    • B01D53/8678Removing components of undefined structure
    • B01D53/8687Organic components
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77Liquid phase processes
    • B01D53/79Injecting reactants
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86Catalytic processes
    • B01D53/90Injecting reactants

Abstract

The invention relates to a wet chemical oxidation waste gas treatment device which comprises a demisting bed, a catalytic packing bed, packing and a dosing pump. Demisting packing is contained in the demisting bed, the catalytic packing bed is arranged at the bottom of the demisting bed, the packing is contained in the catalytic packing bed, and a solid catalyst is adopted as the packing; one side of the demisting bed and one side of the catalytic packing bed are provided with observation windows respectively, the demisting bed and the catalytic packing bed are both arranged in an oxidation tower, one side of the oxidation tower is provided with a circulating water pump and the dosing pump, the oxidation tower and the circulating water pump are arranged in a water tank which is mechanically connected with a PH meter, and the circulating water pump enters the catalytic packing bed through a water pipe; the bottom of the oxidation tower and the dosing pump are each provided with a tap water supplying device, a medicine liquor backflow device is arranged outside the dosing pump, and the medicine liquor backflow device is provided with a liquid level protection switch; the top of the oxidation tower is provided with an exhaust chimney, one side of the exhaust chimney is provided with a sampling hole, the packing is in the shape of a honeycomb, the appearance of the packing is in a square or circular shape, and no less than eight nozzles are arranged on the water pipe.

Description

A kind of wet chemical oxidation waste gas treatment device

Technical field

The present invention relates to a kind of waste gas treatment device, particularly a kind of wet chemical oxidation waste gas treatment device, environmental protection technique and technical field of atmospheric pollution control.

Background technology

VOC (VOCs) is the first kinds of pollution matter received much concern in atmospheric environment, its source is very extensive, serious harm can be caused to health and atmospheric environment, and under, strong illumination high in temperature, very easily with nitrogen oxide generation photochemical reaction, making fine particles pollution gradually serious, is one of haze weather " arch-criminal " that take place frequently.About the research of VOC (VOCs) Treatment process, day by day one of important directions becoming field of environment pollution control.

The VOCs treatment technology applied in the world at present and developing mainly contains absorption method, condensation method, absorption process, biologic treating technique, combustion method, non-thermal plasma trap and chemical oxidation etc.Because wet chemical oxidation method has simple to operate, strong adaptability, is easy to the advantages such as realization, is used widely.But because gas-liquid mass transfer efficiency is lower, make the method in use, the oxidant deposited in the liquid phase contacts insufficient with the pollutant in gas phase, and finally cause contaminant degradation efficiency low, oxidant utilizes the problems such as insufficient.And wet chemical oxidation of the present invention can address these problems.

Summary of the invention

The technical problem to be solved in the present invention is the defect overcoming prior art, provides a kind of wet chemical oxidation waste gas treatment device.

In order to solve the problems of the technologies described above, the invention provides following technical scheme:

A kind of wet chemical oxidation waste gas treatment device of the present invention, comprise demist bed, catalytic filler bed, filler, solid catalyst and dosing pump, described demist bed inside is provided with demist filler, described catalytic filler bed is provided with bottom described demist bed, described catalytic filler bed inside is provided with filler, described filler is solid catalyst, described demist bed and described catalytic filler bed side are equipped with observation window, described demist bed and described catalytic filler bed are all arranged in oxidizing tower, described oxidizing tower side is provided with water circulating pump and dosing pump, described oxidizing tower and described water circulating pump are arranged in the sink, described tank mechanical connection PH meter, described water circulating pump enters described catalytic filler bed by water pipe, running water device for supplying is equipped with described dosing pump bottom described oxidizing tower, described dosing pump outside is provided with liquid reflux, described liquid reflux is provided with level protecting switch.

As a preferred technical solution of the present invention, described oxidizing tower top is provided with exhaust chimney, and described exhaust chimney side is provided with thief hole.

As a preferred technical solution of the present invention, described filler is made up of active carbon, iron powder, manganese dioxide powder, nickel sesquioxide, activated alumina and silica white, and described filler is cellular, outward appearance squarely or circle.

As a preferred technical solution of the present invention, described observation window is no less than 3.

As a preferred technical solution of the present invention, described nozzle is arranged on described water pipe, and described nozzle is no less than 8.

The beneficial effect that the present invention reaches is: a kind of wet chemical oxidation waste gas treatment device of the present invention, and because oxidant utilizes fully, consumption is few; By force Chemical oxidizing, can react with most of pollutant under the existence of multiphase catalyst; Solid catalysis module long service life in chemical oxidation tower; Can automatic liquid supply device be set, without the need to manually carry out oxidation solution preparation, add, convenient operating maintenance; Process unit project organization is simple, and floor space is little, and operating maintenance is convenient; Chemical oxidation techniques has good broad spectrum activity, and process range is relatively more extensive, is comparatively applicable to the waste gas pollution control and treatment of complicated component, and decompose more thorough, elimination of off flavor is more obvious.The catalyst used has enrichment function, the pollutant in adsorbable gas, carries out enrichment to it, to increase the touch opportunity of pollutant and oxidant; Also have catalytic oxidation function, the elements such as the iron in catalyst, manganese, have accelerating oxidation agent to organic oxidation Sum decomposition, accelerated reaction process.

Accompanying drawing explanation

Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for description, together with embodiments of the present invention for explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:

Fig. 1 is a kind of wet chemical oxidation waste gas treatment device of the present invention structural representation;

In figure: 1, oxidizing tower; 2, exhaust chimney; 3, thief hole; 4, demister; 5, demist filler; 6, nozzle; 7, catalytic filler bed; 8, filler; 9, observation window; 10, water circulating pump; 11, dosing pump; 12, PH meter; 13, level protecting switch; 14, running water device for supplying; 15, liquid reflux; 16, water pipe; 17, tank.

Detailed description of the invention

Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.

Embodiment

As shown in Figure 1, a kind of wet chemical oxidation waste gas treatment device, comprise demist bed 4, catalytic filler bed 7, filler 8 and dosing pump 11, described demist bed 4 inside is provided with demist filler 5, described catalytic filler bed 7 is provided with bottom described demist bed 4, described catalytic filler bed 7 inside is provided with filler 5, described filler 5 is solid catalyst, described demist bed 4 and described catalytic filler bed 7 side are equipped with observation window 9, described demist bed 4 and described catalytic filler bed 7 are all arranged in oxidizing tower 1, described oxidizing tower 1 side is provided with water circulating pump 10 and dosing pump 11, described oxidizing tower 1 and described water circulating pump 10 are arranged in tank 17, described tank 17 is mechanically connected PH meter 12, described water circulating pump 10 enters described catalytic filler bed 7 by water pipe 16, running water device for supplying 14 is equipped with described dosing pump 11 bottom described oxidizing tower 1, by increasing catalytic filler in oxidizing tower, improve the pH value condition of reactant liquor, strengthening gas-solid-liquid three contacts, the one of exploitation is novel, efficiently, economical, easy new waste gas treatment process, successfully solve the mass-transfer efficiency that annoying the development of traditional wet chemistry oxidation technology low, reply load variations ability, the inherent shortcomings such as reaction speed is slow, described dosing pump 11 outside is provided with liquid reflux 15, and described liquid reflux 15 is provided with level protecting switch 13.

Described oxidizing tower 1 top is provided with exhaust chimney 2, described exhaust chimney 2 side is provided with thief hole 3, described filler 8 is made up of active carbon, iron powder, manganese dioxide powder, nickel sesquioxide, activated alumina and silica white, described filler 8 is cellular, and outward appearance squarely or circle, at 200 DEG C of temperature, this catalyst is pressed into cellular, outward appearance squarely or circle, during use, by this catalyst buildup in oxidizing tower.This catalyst has following function: enrichment function, the pollutant in adsorbable gas, carries out enrichment to it, to increase the touch opportunity of pollutant and oxidant; Also have catalytic oxidation function, the elements such as the iron in catalyst, manganese, have accelerating oxidation agent to organic oxidation Sum decomposition, accelerated reaction process.

Described observation window 9 is no less than 3, and described nozzle 6 is arranged on described water pipe 16, and described nozzle 6 is no less than 8.This technology is by special nozzle, oxidation solution (as hydrogen peroxide, clorox etc.) will be absorbed and spray into catalytic filler bed in dispersing atomization shape, fully contact at packed bed liquid, gas, solid three-phase, by liquid absorption and chemical oxidation effect, smell substance in gas is absorbed or oxidation

Concrete, a kind of wet chemical oxidation waste gas treatment device of the present invention, because oxidant utilizes fully, consumption is few; By force Chemical oxidizing, can react with most of pollutant under the existence of multiphase catalyst; Solid catalysis module long service life in chemical oxidation tower; Can automatic liquid supply device be set, without the need to manually carry out oxidation solution preparation, add, convenient operating maintenance; Process unit project organization is simple, and floor space is little, and operating maintenance is convenient; Chemical oxidation techniques has good broad spectrum activity, and process range is relatively more extensive, is comparatively applicable to the waste gas pollution control and treatment of complicated component, and decompose more thorough, elimination of off flavor is more obvious.The catalyst used has enrichment function, the pollutant in adsorbable gas, carries out enrichment to it, to increase the touch opportunity of pollutant and oxidant; Also have catalytic oxidation function, the elements such as the iron in catalyst, manganese, have accelerating oxidation agent to organic oxidation Sum decomposition, accelerated reaction process.

Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (5)

1. a wet chemical oxidation waste gas treatment device, comprise demist bed (4), catalytic filler bed (7), filler (8) and dosing pump (11), it is characterized in that, described demist bed (4) inside is provided with demist filler (5), described demist bed (4) bottom is provided with described catalytic filler bed (7), described catalytic filler bed (7) inside is provided with filler (5), described filler (5) is solid catalyst, described demist bed (4) and described catalytic filler bed (7) side are equipped with observation window (9), described demist bed (4) and described catalytic filler bed (7) are all arranged in oxidizing tower (1), described oxidizing tower (1) side is provided with water circulating pump (10) and dosing pump (11), described oxidizing tower (1) and described water circulating pump (10) are arranged in tank (17), described tank (17) mechanical connection PH meter (12), described water circulating pump (10) enters described catalytic filler bed (7) by water pipe (16), described oxidizing tower (1) bottom and described dosing pump (11) are equipped with running water device for supplying (14), described dosing pump (11) outside is provided with liquid reflux (15), described liquid reflux (15) is provided with level protecting switch (13).
2. a kind of wet chemical oxidation waste gas treatment device according to claim 1, it is characterized in that, described oxidizing tower (1) top is provided with exhaust chimney (2), and described exhaust chimney (2) side is provided with thief hole (3).
3. a kind of wet chemical oxidation waste gas treatment device according to claim 1, it is characterized in that, described filler (8) is made up of active carbon, iron powder, manganese dioxide powder, nickel sesquioxide, activated alumina and silica white, described filler (8) for cellular, outward appearance squarely or circle.
4. a kind of wet chemical oxidation waste gas treatment device according to claim 1, is characterized in that, described observation window (9) is no less than 3.
5. a kind of wet chemical oxidation waste gas treatment device according to claim 1, is characterized in that, described nozzle (6) is arranged on described water pipe (16), and described nozzle (6) is no less than 8.
CN201610101371.8A 2016-02-24 2016-02-24 A kind of wet chemical oxidation waste gas treatment device CN105536526B (en)

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CN105536526B CN105536526B (en) 2018-10-30

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106492627A (en) * 2016-11-28 2017-03-15 永康市禄祥环保科技有限公司 Organic exhaust gas solubilising catalysis solvent
CN107096381A (en) * 2017-06-06 2017-08-29 兴嵘环境科技(上海)有限公司 Handle wet chemistry catalytic oxidation process for treating and its application of VOCs organic exhaust gas

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103949133A (en) * 2014-05-20 2014-07-30 江苏司能润滑科技有限公司 Waste gas treatment device and method for lubricating oil production line
CN203777922U (en) * 2014-03-28 2014-08-20 杨佳朋 Wet-process flue gas oxidation and denitration tower
CN104941578A (en) * 2015-05-26 2015-09-30 漳州市宇诚新型材料有限公司 Silica-gel composite particles for purification and preparation method thereof
CN205550034U (en) * 2016-02-24 2016-09-07 常州大恒环保科技有限公司 Wet process chemical oxidation waste gas pollution control and treatment device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203777922U (en) * 2014-03-28 2014-08-20 杨佳朋 Wet-process flue gas oxidation and denitration tower
CN103949133A (en) * 2014-05-20 2014-07-30 江苏司能润滑科技有限公司 Waste gas treatment device and method for lubricating oil production line
CN104941578A (en) * 2015-05-26 2015-09-30 漳州市宇诚新型材料有限公司 Silica-gel composite particles for purification and preparation method thereof
CN205550034U (en) * 2016-02-24 2016-09-07 常州大恒环保科技有限公司 Wet process chemical oxidation waste gas pollution control and treatment device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106492627A (en) * 2016-11-28 2017-03-15 永康市禄祥环保科技有限公司 Organic exhaust gas solubilising catalysis solvent
CN106492627B (en) * 2016-11-28 2019-09-10 永康市禄祥环保科技有限公司 Organic exhaust gas solubilising is catalyzed solvent
CN107096381A (en) * 2017-06-06 2017-08-29 兴嵘环境科技(上海)有限公司 Handle wet chemistry catalytic oxidation process for treating and its application of VOCs organic exhaust gas

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