CN103657306A - Waste gas treatment device - Google Patents

Waste gas treatment device Download PDF

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Publication number
CN103657306A
CN103657306A CN201310739592.4A CN201310739592A CN103657306A CN 103657306 A CN103657306 A CN 103657306A CN 201310739592 A CN201310739592 A CN 201310739592A CN 103657306 A CN103657306 A CN 103657306A
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CN
China
Prior art keywords
waste gas
gas
storage tank
aqua storage
described
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CN201310739592.4A
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Chinese (zh)
Inventor
万玉山
黄利
孙凌峰
贾春霞
王莉
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常州大学
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Priority to CN201310739592.4A priority Critical patent/CN103657306A/en
Publication of CN103657306A publication Critical patent/CN103657306A/en

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Abstract

The invention relates to a waste gas treatment device, which comprises a waste gas purifier and a waste gas collection and exhaust system. A waste gas washing and dust removing area, a waste gas oxidization absorbing area, a waste gas alkalization absorbing area, a first demister, a waste gas acidification absorbing area and a second demister are sequentially arranged in the waste gas purifier from bottom to top. A tap water spray device and a dust and waste water collection cone tank are arranged in the waste gas washing and dust removing area. A waste gas oxidization absorbing component is arranged in the waste gas oxidization absorbing area. A waste gas alkalization absorbing component is arranged in the waste gas alkalization absorbing area. A waste gas acidification absorbing component is arranged in the waste gas acidification absorbing area. A heat exchanger is arranged at the front of a flue gas exhaust pipe. The waste gas treatment device has the advantages that the waste gas with higher dust concentration can be effectively purified, various organic, inorganic, acidic and alkali waste gas can be effectively treated, and the problem of atmospheric pollution caused by waste gas sources in factory workshops, garbage stations and the like is solved.

Description

Emission-control equipment

Technical field

The present invention relates to technical field of waste gas treatment, especially a kind of emission-control equipment of complicated component.

Background technology

The generation of haze is more and more frequent in recent years, make a big impact to people's live and work, the generation of haze is the result of many factors comprehensive function, and the discharge of industrial waste gas accounts for very large proportion, and the improvement that therefore strengthens exhaust emission has become one of important content of current efforts at environmental protection.

The Chinese patent < < complex waste gas total system > > (patent No.: 201210235730.0) disclose a kind of waste gas total system device, simple in structure, treatment effeciency advantages of higher that this device has.But there is following defect in this Patent equipment: be 1. unsuitable for processing the complex waste gas that dust concentration is high; When 2. exhausted air quantity is large, the consumption of active carbon is larger, and operating cost is higher.

Summary of the invention

The technical problem to be solved in the present invention is: overcome the technical problem of above-mentioned patent, a kind for the treatment of system device that is suitable for processing high concentrate dust waste gas is provided, can effectively process various organic and inorganic waste gas, various acidity and alkaline waste gas.

The technical solution adopted for the present invention to solve the technical problems is: a kind of exhaust treatment system device, comprise catalytic converter and to the gas sampling exhaust system of catalytic converter input and output waste gas, in described catalytic converter, from bottom, be upwards followed successively by waste gas cleaning dust district, off-gas oxidizing uptake zone, waste gas alkalization uptake zone, the first demister, gas acidized uptake zone, the second demister.Waste gas dedusting district is provided with exhaust gas inlet, and exhaust gas inlet place is provided with gas flow guiding pyrometric cone, and described exhaust gas inlet is by pipeline connection gas sampling induction system, and waste gas the second demister top is provided with waste gas outlet.

In described waste gas cleaning dust district, be provided with waste gas cleaning dust assembly, described waste gas cleaning dust assembly comprises and is positioned at the running water spray equipment on waste gas cleaning dust assembly top, the dust waste water that the is positioned at waste gas cleaning dust assembly bottom cone tank that catchments, the dust waste water cone tank that catchments is connected effluent settling chamber by valve with pipeline, after wastewater treatment is up to standard, enters municipal wastewater pipe network.

In described off-gas oxidizing uptake zone, be provided with off-gas oxidizing absorbent assembly, described off-gas oxidizing absorbent assembly comprise be arranged in off-gas oxidizing assembly top ozone oxidation water spray system, be positioned at the ozone oxidation water aqua storage tank of off-gas oxidizing absorbent assembly bottom and be placed in the ozonation aerated dish of ozone oxidation water aqua storage tank, described ozonation aerated dish is communicated with ozone generator by aeration tank, also has the ozone oxidation water-circulating pump that the ozone oxidation water in ozone oxidation water aqua storage tank is pumped into ozone oxidation water spray system.

Described waste gas alkalization uptake zone is provided with waste gas alkalization absorbent assembly, described waste gas alkalization absorbent assembly comprise be arranged in waste gas alkalization assembly top alkaline solution spray equipment, be positioned at the alkaline solution aqua storage tank of waste gas alkalization absorbent assembly bottom and the alkaline solution of alkaline solution aqua storage tank pumped into the alkaline solution circulating pump of alkaline solution spray equipment.

Described gas acidized uptake zone is provided with gas acidized absorbent assembly, described gas acidized absorbent assembly comprise be arranged in off-gas oxidizing assembly top acid solution spray equipment, be positioned at the acid solution aqua storage tank of gas acidized absorbent assembly bottom and the acid solution of acid solution aqua storage tank pumped into the acid solution circulating pump of acid solution spray equipment.

Between described waste gas alkalization absorbent assembly and gas acidized absorbent assembly, be provided with the first demister, between described gas acidized absorbent assembly and waste gas outlet, be provided with the second demister.Demister is that the large drop in flue gas is collected, and make it to return, reduce the moisture content in flue gas, its operation principle is that flue gas enters demister, through a series of bends, from top, discharge, and water droplet is due to the effect of its quality and kinetic energy, when through bend part, straight line falls, collide the surface of demister, and rebounding under Action of Gravity Field.

For ease of overhaul of the equipments and equipment rotation, described catalytic converter has and is arranged in parallel standby or two covers of simultaneously working each other, the exhaust gas inlet of two cover catalytic converters is all communicated with gas sampling induction system by pipeline and valve, and the exhaust gas inlet of two cover catalytic converters is all communicated with exhaust tube by pipeline and valve.Can realize switching by valve, when exhausted air quantity is large, also can move by two complete equipments simultaneously.

Concrete, in the middle of described catalytic converter, for cylindrical, upper and lower two ends are toot, on the tank body of catalytic converter, offer observation port and maintenance replacement port.Volume can be determined according to the number of pending gas flow, adopts vertical vertical placement.

Further and hydrostatic column matches, described ozone oxidation water aqua storage tank, alkaline solution aqua storage tank and acid solution aqua storage tank are circle basin shape, ozone oxidation water aqua storage tank, alkaline solution aqua storage tank and acid solution aqua storage tank top are equipped with shower water aggregation apparatus, and the lower end diameter of described shower water aggregation apparatus is less than the diameter of ozone oxidation water aqua storage tank, alkaline solution aqua storage tank and acid solution aqua storage tank.Shower water aggregation apparatus can make shower water assemble and be back to ozone oxidation water aqua storage tank, alkaline solution aqua storage tank and acid solution aqua storage tank.

Further, for supplementing in time absorbent solution, described waste gas alkalization absorbent assembly also comprises adder-subtractor, and described adder-subtractor comprises alkali liquid tank and agitating device, and alkali liquid tank is communicated with alkaline solution circulating pump by pipeline and valve; Gas acidized assembly also comprises acid adding device, and described acid adding device comprises acid solution tank and agitating device, and acid solution tank is communicated with acid solution circulating pump by pipeline and valve.The matched proportion density of absorbent solution decides according to exhausted air quantity and the exhaust gas concentration processed.

Further, described ozone oxidation water spray system, alkaline solution spray equipment and acid solution spray equipment are helical form spray equipment.The water ejecting presents vaporific, and mixing together between water smoke, does not stay dead angle, is conducive to expand the contact area of waste gas and solution, improves absorptivity and assimilation effect.

The alkaline solution that described waste gas alkalization absorbent assembly adopts is sodium hydroxide solution or limewash, and the acid solution that described gas acidized absorbent assembly adopts is sulfuric acid or hydrochloric acid.

Further preferred equipment, described ozone generator is intermediate-frequency ozone generator.Can produce ozone more than concentration 10mg/L, and power consumption is few, floor space is little, can realize automatically and controlling.

Further preferred equipment, demister is deflection plate demister or overflowing board demister.

Further, use heat exchanger to utilize industrial exhaust heat to heat the waste gas purifying, increase the diffusivity of waste gas after purifying, reduce the appearance of visible smoke vapour.

The invention has the beneficial effects as follows, exhaust treatment system apparatus structure of the present invention is simple, be easy to manufacture, first after cleaning dust and ozone oxidation, enter waste gas alkalization absorbent assembly, after demister dehumidifying, enter gas acidized absorbent assembly, after demister dehumidifying, add hot driving again, can effectively process various organic and inorganic waste gas, various acidity and alkaline waste gas; Can effectively purify high concentrate dust waste gas, solve the exhaust emission problem that the exhaust gas source such as factory floor, refuse depot, sewage biochemical aeration tank produce.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the present invention is further described.

Fig. 1 is the example structure block diagram of exhaust treatment system device of the present invention;

Fig. 2 is the internal structure schematic diagram of catalytic converter in embodiments of the invention;

Fig. 3 is the flow chart of the embodiment of the present invention;

In figure: 1. catalytic converter, 10. waste gas cleaning dust district, 11. off-gas oxidizing uptake zones, 12. waste gas alkalization uptake zones, 13. gas acidized uptake zones, 14. exhaust gas inlet, 15. gas flow guiding pyrometric cones, 16. waste gas outlets, 1-1. running water spray equipment, the 1-2. dust waste water conical grooves of catchmenting, 2-1. ozone oxidation water spray system, 2-2. ozone oxidation water aqua storage tank, 2-3. ozone oxidation water-circulating pump, the ozonation aerated dish of 2-4., 2-5. ozone generator, 3-1. alkaline solution spray equipment, 3-2. alkaline solution aqua storage tank, 3-3. alkaline solution circulating pump, 3-4. adder-subtractor, 4-1. acid solution spray equipment, 4-2. acid solution aqua storage tank, 4-3. acid solution circulating pump, 4-4. acid adding device, 17. first demisters, 18. second demisters, 19. shower water aggregation apparatus.

The specific embodiment

In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, basic structure of the present invention is only described in a schematic way, so it only show the formation relevant with the present invention.

The embodiment of exhaust treatment system device of the present invention as shown in Figures 1 to 3, comprise catalytic converter 1 and to the gas sampling induction system of catalytic converter 1 input and output waste gas, in catalytic converter 1, from bottom, be upwards followed successively by waste gas cleaning dust district 10, off-gas oxidizing uptake zone 11, waste gas alkalization uptake zone 12 and gas acidized uptake zone 13, waste gas cleaning dust district 10 is provided with exhaust gas inlet 14, exhaust gas inlet 14 is by pipeline connection gas sampling induction system, catalytic converter 1 top is provided with waste gas outlet 16, waste gas outlet 16 connects heat exchanger by pipeline, waste gas after heating discharges by aiutage.

In described waste gas cleaning dust district 10, be provided with waste gas cleaning dust assembly, described waste gas cleaning dust assembly comprises and is positioned at the running water spray equipment 1-1 on waste gas cleaning dust assembly top, the dust waste water that the is positioned at waste gas cleaning dust assembly bottom cone tank 1-2 that catchments, the dust waste water cone tank 1-2 that catchments is connected effluent settling chamber by valve with pipeline, after wastewater treatment is up to standard, enters municipal wastewater pipe network.

In off-gas oxidizing uptake zone 11, be provided with off-gas oxidizing absorbent assembly, off-gas oxidizing absorbent assembly comprises the ozone oxidation water spray system 2-1 that is positioned at 11 tops, off-gas oxidizing uptake zone, be arranged in the ozone oxidation water aqua storage tank 2-2 and the ozonation aerated dish 2-4 that is placed in ozone oxidation water aqua storage tank 2-2 of 11 bottoms, off-gas oxidizing uptake zone, ozonation aerated dish 2-4 is communicated with ozone generator 2-5 by aeration tank, also there is the ozone oxidation water-circulating pump 2-3 that the ozone oxidation water in ozone oxidation water aqua storage tank 2-2 is pumped into ozone oxidation water spray system 2-1, ozone generator 2-5 is intermediate-frequency ozone generator, in ozone oxidation water aqua storage tank 2-2, during solution consumption, make-up solution, need change clear water when the solution colourity in ozone oxidation water aqua storage tank 2-2 deepens or when turbidity is higher automatically.

Waste gas alkalization uptake zone 12 is provided with waste gas alkalization absorbent assembly, waste gas alkalization absorbent assembly comprise be arranged in waste gas alkalization 12 tops, uptake zone alkaline solution spray equipment 3-1, be positioned at the alkaline solution aqua storage tank 3-2 of waste gas alkalization 12 bottoms, uptake zone and the alkaline solution of alkaline solution aqua storage tank 3-2 pumped into the alkaline solution circulating pump 3-3 of alkaline solution spray equipment 3-1, waste gas alkalization absorbent assembly also comprises adder-subtractor 3-4, adder-subtractor 3-4 comprises alkali liquid tank and agitating device, and alkali liquid tank is communicated with alkaline solution circulating pump 3-3 by pipeline and valve.

Gas acidized uptake zone 13 is provided with gas acidized absorbent assembly, gas acidized absorbent assembly comprise be arranged in 13 tops, gas acidized uptake zone acid solution spray equipment 4-1, be positioned at the acid solution aqua storage tank 4-2 of 13 bottoms, gas acidized uptake zone and the acid solution of acid solution aqua storage tank 4-2 pumped into the acid solution circulating pump 4-3 of acid solution spray equipment 4-1, gas acidized assembly also comprises acid adding device 4-4, acid adding device 4-4 comprises acid solution tank and agitating device, and acid solution tank is communicated with acid solution circulating pump 4-3 by pipeline and valve.

Between waste gas alkalization uptake zone 12 and gas acidized uptake zone 13, be provided with baffle plate type the first demister 17, between gas acidized uptake zone 13 and waste gas outlet 16, be provided with baffle plate type the second demister 18.

In the middle of catalytic converter 1, be cylindrical, be toot up and down, on the tank body of catalytic converter 1, offer observation port and overhaul replacement port.Ozone oxidation water aqua storage tank 2-2, alkaline solution aqua storage tank 3-2 and acid solution aqua storage tank 4-2 are circle basin shape, ozone oxidation water aqua storage tank 2-2, alkaline solution aqua storage tank 3-2 and acid solution aqua storage tank 4-2 top are equipped with shower water aggregation apparatus 19, and the lower end diameter of shower water aggregation apparatus 19 is less than the diameter of ozone oxidation water aqua storage tank 2-2, alkaline solution aqua storage tank 3-2 and acid solution aqua storage tank 4-2.

Ozone oxidation water spray system 2-1, alkaline solution spray equipment 3-1 and acid solution spray equipment 4-1 are helical form spray equipment.

The alkaline solution that waste gas alkalization absorbent assembly adopts is sodium hydroxide solution or limewash, and the acid solution that gas acidized absorbent assembly adopts is sulfuric acid or hydrochloric acid.

The waste gas that the exhaust gas source such as workshop produce enters catalytic converter 1 by exhaust gas inlet 14 after being collected by gas sampling induction system, effect due to gas flow guiding pyrometric cone 15, waste gas scatters and is uniformly distributed, running water is from uniform spray equipment 1-1 ejection, waste gas is carried out to cleaning dust, particle in waste gas is blocked and absorbs the dust waste water the fall into bottom conical grooves 1-2 that catchments, and by valve and pipeline, enters effluent settling chamber, after wastewater treatment is up to standard, enters municipal wastewater pipe network.Waste gas rises in oxidation uptake zone 11, ozone oxidation water is from uniform ozone oxidation water spray system 2-1 ejection, form countless fine mist, fully mix and contact the rear chemical reaction that occurs with waste gas, harmful substance in waste gas is oxidized to the small-molecule substance that is easy to absorption and absorption, and a part is absorbed in ozone oxidation water.The alkaline solution that waste gas continues to rise with alkaline solution spray equipment 3-1 ejection contacts, waste gas middle acid substance and alkaline matter generation chemical reaction, reaction product flows into bottom alkaline solution aqua storage tank 3-2 with alkaline solution, then enter the first demister 17, the drop in waste gas is here blocked; The acid solution that waste gas continues to rise with acid solution spray equipment 4-1 ejection contacts, there is chemical reaction with acid in the alkaline matter in waste gas, reaction product flows into bottom acid solution aqua storage tank 4-2 with acid solution, then enter the second demister 18, drop in waste gas is here blocked, so far waste gas is processed into clean gas, realizes qualified discharge after heating.

The above-mentioned foundation desirable embodiment of the present invention of take is enlightenment, and by above-mentioned description, relevant staff can, within not departing from the scope of this invention technological thought, carry out various change and modification completely.The technical scope of this invention is not limited to the content on description, must determine its technical scope according to claim scope.

Claims (5)

1. an emission-control equipment, comprise catalytic converter (1) and to the gas sampling exhaust system of catalytic converter (1) input and output waste gas, it is characterized in that: in described catalytic converter (1), from bottom, be upwards followed successively by waste gas cleaning dust district (10), off-gas oxidizing uptake zone (11), waste gas alkalization uptake zone (12) and gas acidized uptake zone (13), waste gas cleaning dust district (10) is provided with exhaust gas inlet (14), exhaust gas inlet (14) is by pipeline connection gas sampling induction system, catalytic converter (1) top is provided with waste gas outlet (16), waste gas outlet (16) connects heat exchanger by pipeline, waste gas after heating discharges by aiutage,
In described waste gas cleaning dust district (10), be provided with waste gas cleaning dust assembly, described waste gas cleaning dust assembly comprises and is positioned at the running water spray equipment (1-1) on waste gas cleaning dust assembly top, the dust waste water that the is positioned at waste gas cleaning dust assembly bottom cone tank (1-2) that catchments;
In described off-gas oxidizing uptake zone (11), be provided with off-gas oxidizing absorbent assembly, described off-gas oxidizing absorbent assembly comprises the ozone oxidation water spray system (2-1) that is positioned at top, off-gas oxidizing uptake zone (11), be arranged in the ozone oxidation water aqua storage tank (2-2) of bottom, off-gas oxidizing uptake zone (11) and be placed in the ozonation aerated dish (2-4) of ozone oxidation water aqua storage tank (2-2), described ozonation aerated dish (2-4) is communicated with ozone generator (2-5) by aeration tank, also there is the ozone oxidation water-circulating pump (2-3) that the ozone oxidation water in ozone oxidation water aqua storage tank (2-2) is pumped into ozone oxidation water spray system (2-1),
Described waste gas alkalization uptake zone (12) is provided with waste gas alkalization absorbent assembly, described waste gas alkalization absorbent assembly comprise be arranged in waste gas alkalization top, uptake zone (12) alkaline solution spray equipment (3-1), be positioned at the alkaline solution aqua storage tank (3-2) of waste gas alkalization bottom, uptake zone (12) and the alkaline solution of alkaline solution aqua storage tank (3-2) pumped into the alkaline solution circulating pump (3-3) of alkaline solution spray equipment (3-1);
Described gas acidized uptake zone (13) is provided with gas acidized absorbent assembly, described gas acidized absorbent assembly comprise be arranged in top, gas acidized uptake zone (13) acid solution spray equipment (4-1), be positioned at the acid solution aqua storage tank (4-2) of bottom, gas acidized uptake zone (13) and the acid solution of acid solution aqua storage tank (4-2) pumped into the acid solution circulating pump (4-3) of acid solution spray equipment (4-1);
Between described waste gas alkalization uptake zone (12) and gas acidized uptake zone (13), be provided with baffle plate type the first demister (17), between gas acidized uptake zone (13) and waste gas outlet (16), be provided with baffle plate type the second demister (18);
Described ozone oxidation water aqua storage tank (2-2), alkaline solution aqua storage tank (3-2) and acid solution aqua storage tank (4-2) are circle basin shape, ozone oxidation water aqua storage tank (2-2), alkaline solution aqua storage tank (3-2) and acid solution aqua storage tank (4-2) top are equipped with shower water aggregation apparatus (19), and the lower end diameter of shower water aggregation apparatus (19) is less than the diameter of ozone oxidation water aqua storage tank (2-2), alkaline solution aqua storage tank (3-2) and acid solution aqua storage tank (4-2).
2. emission-control equipment as claimed in claim 1, it is characterized in that: described catalytic converter (1) has and is arranged in parallel standby or two covers of simultaneously working each other, the exhaust gas inlet (14) of two cover catalytic converters (1) is all communicated with gas sampling induction system by pipeline and valve, and the waste gas outlet (16) of two cover catalytic converters (1) is all connected heat exchanger and aiutage with valve by pipeline.
3. the emission-control equipment as described in claim 1,2, is characterized in that: in the middle of described catalytic converter (1), for cylindrical, upper and lower two ends are toot, offer observation port and maintenance replacement port on the tank body of catalytic converter (1).
4. emission-control equipment as claimed in claim 1, is characterized in that: the described dust waste water cone tank (1-2) that catchments is connected effluent settling chamber by valve with pipeline, after wastewater treatment is up to standard, enters municipal wastewater pipe network.
5. emission-control equipment as claimed in claim 1, is characterized in that: described the first demister (17) and the second demister (18) are deflection plate demister or overflowing board demister.
CN201310739592.4A 2013-12-27 2013-12-27 Waste gas treatment device CN103657306A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104307863A (en) * 2014-10-21 2015-01-28 常州大学 Severely-polluted soil remediation device
CN104445725A (en) * 2014-11-20 2015-03-25 常州大学 Integral device for treating waste gas and high-concentration ammonia nitrogen containing waste water
CN104437047A (en) * 2014-10-30 2015-03-25 常州大学 Dedusting denitration and desulphurization device
CN104548899A (en) * 2014-12-15 2015-04-29 常州大学 Integral odor treatment device for sewage treatment plant
CN105289165A (en) * 2015-10-09 2016-02-03 贵州省遵义市永力机电安装有限公司 Water curtain type smoke dust removal device
CN105749637A (en) * 2016-04-07 2016-07-13 常州大学 Comprehensive treatment system of waste gas in production of rubber tires
CN106268233A (en) * 2016-09-06 2017-01-04 常州大学 CH<sub>3</sub>nH<sub>2</sub>(g) emission-control equipment
CN106669392A (en) * 2016-12-23 2017-05-17 常州大学 Waste gas treatment device for setting machine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002361035A (en) * 2001-06-06 2002-12-17 Babcock Hitachi Kk Boiler flue gas treatment equipment
CN201613106U (en) * 2010-02-24 2010-10-27 新疆旭日环保股份有限公司 Stuffing spray-washing sewage deodorizing device
CN102716652A (en) * 2012-07-09 2012-10-10 常州大学 Comprehensive complicated waste gas treatment system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002361035A (en) * 2001-06-06 2002-12-17 Babcock Hitachi Kk Boiler flue gas treatment equipment
CN201613106U (en) * 2010-02-24 2010-10-27 新疆旭日环保股份有限公司 Stuffing spray-washing sewage deodorizing device
CN102716652A (en) * 2012-07-09 2012-10-10 常州大学 Comprehensive complicated waste gas treatment system

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104307863A (en) * 2014-10-21 2015-01-28 常州大学 Severely-polluted soil remediation device
CN104437047A (en) * 2014-10-30 2015-03-25 常州大学 Dedusting denitration and desulphurization device
CN104445725A (en) * 2014-11-20 2015-03-25 常州大学 Integral device for treating waste gas and high-concentration ammonia nitrogen containing waste water
CN104445725B (en) * 2014-11-20 2016-02-10 常州大学 Waste gas and high-concentration ammonia nitrogenous wastewater process integrated apparatus
CN104548899A (en) * 2014-12-15 2015-04-29 常州大学 Integral odor treatment device for sewage treatment plant
CN105289165A (en) * 2015-10-09 2016-02-03 贵州省遵义市永力机电安装有限公司 Water curtain type smoke dust removal device
CN105749637A (en) * 2016-04-07 2016-07-13 常州大学 Comprehensive treatment system of waste gas in production of rubber tires
CN106268233A (en) * 2016-09-06 2017-01-04 常州大学 CH<sub>3</sub>nH<sub>2</sub>(g) emission-control equipment
CN106669392A (en) * 2016-12-23 2017-05-17 常州大学 Waste gas treatment device for setting machine

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