CN104707987A - Casting waste gas processing system with four-tower-combination plasma body - Google Patents
Casting waste gas processing system with four-tower-combination plasma body Download PDFInfo
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- CN104707987A CN104707987A CN201410684088.3A CN201410684088A CN104707987A CN 104707987 A CN104707987 A CN 104707987A CN 201410684088 A CN201410684088 A CN 201410684088A CN 104707987 A CN104707987 A CN 104707987A
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- spray column
- waste gas
- sedimentation basin
- casting waste
- tower
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
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Abstract
The invention discloses a casting waste gas processing system with a four-tower-combination plasma body. The casting waste gas processing system with the four-tower-combination plasma body comprises a gas skirt, a first spray tower, a second spray tower, a plasma body processor and a third spray tower which are arranged above an exhaust-pipe outlet. The casting waste gas processing system with the four-tower-combination plasma body has the advantages that the industrial operation is convenient, clean production is achieved, after the casting waste gas is processed with the four-tower-combination plasma body, not only can the flue-gas temperature of the casting waste gas be lowered, but also the particulate matter and nitric oxide in the casting waste gas are removed effectively, and the problem that the casting waste gas pollutes the environment is solved completely.
Description
Technical field
The present invention relates to a kind of emission-control equipment, particularly a kind of system of four tower combination plasma treatment casting waste gas, belongs to the technical field of waste gas treatment equipment.
Background technology
Model casting generally adopts full form casting process, as wax material makes meltability model with fusible material, cover thereon and be coated with the special fireproof coating of some layers, after super-dry and sclerosis formation overall shell, the method of reusable heat water heating melts model from shell, then shell is placed in sandbox, fills dry moulding in its surrounding, finally by casting method roaster through high-temperature roasting, obtain foundry goods in wherein casting molten metal.
The waste gas produced in casting process is mainly recognized lower several:
1. moulding, coremaking, sand process industrial dust
Dust: the main component of common sand casting technique Sand comprises: silica sand, water, clay etc., the composition of core is mainly coated sand.Therefore the main component of industrial dust is titanium dioxide silica dust, clay dirt etc.According to analogy investigation, the dust generation of mulling, sand processing procedure is about 0.05% of raw material dosage, casts cast iron type sand raw material dosage per ton and is about 5-10t.Foundry Works to mulling, sand process, vibrating shakeout, moulding, make the practicable Seal treatment of the large operation of the dust-producing amounts such as core.
Waste gas: paraffin waste gas, ammonia, hydrochloric acid mist etc.
ball blast, cleaning industrial dust
Cast(ing) surface after vibrating shakeout process also can adhere to a small amount of molding sand, simultaneously cast(ing) surface is more coarse, can not meet technological requirement, also needs to carry out removing surface by shot-blasting machine and polishing or polishing machine, make cast(ing) surface exquisiteness shinny, reach japanning or plating requirement.
furnace melting flue dust and waste gas
If what melt in electric smelter is pure molten iron, so electric furnace discharge only has heated dry air, does not have other impurity; But in actual production, except adding the pig iron in electric furnace, also to add scrap iron and certain chemical agent (inovulant), common inovulant many employings ferrosilicon, wherein also containing metallic elements such as calcium, barium, strontium, manganese and zirconiums simultaneously; And scrap iron has sometimes unavoidably a small amount of oils or paint class, therefore, can discharge certain hot smoke waste gas in fusion process, the main component of this waste gas comprises: flue dust, CO, polyester resin organic exhaust gas etc.
In the fusing roasting process of full form casting process, at high temperature melting, volatilization are produced organic exhaust gas by wax-pattern or mold, and the main component of this type of waste gas is NMHC, polyethylene and phenols etc.
casting waste gas
Before casting, for avoiding foundry goods to produce the phenomenons such as rough surface, penetration, chemical scab, need to apply the special coating of one deck at mould surface.Its main component comprises: refractory powder, water, suspending agent, binding agent etc.In casting cycle, the composition heat vaporizations such as the water in coating, binding agent, thus form a small amount of hot smoke waste gas, the composition of this flue gas comprises: a small amount of flue dust, steam, non-methane hydrocarbon organic exhaust gas, CO etc. (generation is about the 1-3% of coating consumption).
sand core drying waste gas
Core is mixed by core sand and thermosetting phenolic resin.In core, the content of resin is generally 0.8-1.2%, in core mulling and core bake process, can produce a small amount of organic exhaust gas (exhausted air quantity is about 0.1% of resin use amount)
Due to its operating mode more complicated, the method not yet effectively removed at present.
Summary of the invention
The object of the present invention is to provide a kind of system of four tower combination plasma treatment casting waste gas, this system cost is low, can efficiently remove casting exhaust emission, to alleviate the problem of existing casting exhaust-gas treatment difficulty.
In order to solve the problems of the technologies described above, the present invention adopts following technical proposal:
A kind of system of four tower combination plasma treatment casting waste gas, comprise the gas skirt, the first spray column, the second spray column, plasma processor and the 3rd spray column that are positioned at above exhaust outlet, described gas skirt is connected by the entrance of pipeline with described first spray column; Outlet and the described second spray column entrance of described first spray column pass through pipeline communication; The outlet of described second spray column is connected with described plasma processor entrance by pipeline, and the outlet of described plasma processor is communicated with by entrance with described 3rd spray column, and the exit of described 3rd spray column is connected to the blast pipe of emission; The bottom of described 3rd spray column is connected to sewage disposal system; The outlet of described sewage disposal system is communicated with the water inlet of described first, second, third spray column respectively by inlet channel; Described 3rd spray column water inlet is provided with and adds alkali tank, described in add alkali tank outlet be connected with described inlet channel;
Described sewage disposal system comprises the first sedimentation basin, regulating reservoir, coagulating basin, ramp type sedimentation basin and the second sedimentation basin; Described first sedimentation basin, regulating reservoir, coagulating basin, ramp type sedimentation basin and the second sedimentation basin are connected successively by pipeline; Described second sedimentation basin exit is provided with inlet channel, and described inlet channel is provided with delivery port, and corresponding described delivery port is communicated with the water inlet of described first, second, third spray column respectively.
The system of four above-mentioned tower combination plasma treatment casting waste gas, wherein, described gas skirt is integrated member, and described gas skirt is trapezoidal hollow core member.
The system of four above-mentioned tower combination plasma treatment casting waste gas, wherein, is equipped with bowl-shape filter element in described first, second and third spray column.
The system of four above-mentioned tower combination plasma treatment casting waste gas, wherein, is connected to waste gas filter between described gas skirt and described first spray column.
The system of four above-mentioned tower combination plasma treatment casting waste gas, wherein, described ramp type sedimentation basin comprises housing; Be provided with liner in described housing, described housing bottom is "eight" shape, and described casing center place is provided with outer recessed groove, is provided with the continuous groove corresponding with described groove bottom described liner.
Beneficial effect of the present invention:
(1) method operating procedure provided by the invention is simple, nuisanceless to environment;
(2) four tower combination plasma treatment casting waste gas methods provided by the invention are compared with one-level Water spray technique, and the removal of particle in waste gas can be made to meet national atmosphere pollutants emission standards;
(3) the plasma rear end secondary Water spray tower treatment process in the present invention, can make the nitrogen oxide in waste gas, NMHC efficiently removed, meet national atmosphere pollutants emission standards.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
If figure is as shown, a kind of system of four tower combination plasma treatment casting waste gas, comprise gas skirt 1, first spray column 2, second spray column 3, plasma processor 4 and the 3rd spray column 5 that are positioned at above exhaust outlet, described gas skirt 1 is connected with the entrance of described first spray column 2 by pipeline 6; The outlet of described first spray column 2 is communicated with by pipeline 6 with described second spray column 3 entrance; The outlet of described second spray column 3 is connected with described plasma processor 4 entrance by pipeline 6, the outlet of described plasma processor 4 is communicated with by pipeline 6 entrance with described 3rd spray column 5, and the exit of described 3rd spray column 5 is connected to the blast pipe 7 of emission; The bottom of described 3rd spray column 5 is connected to sewage disposal system 8; The outlet of described sewage disposal system 8 is communicated with the water inlet of described first, second, third spray column respectively by inlet channel 9; Described 3rd spray column water inlet is provided with and adds alkali tank 10, described in add alkali tank 10 outlet be connected with described inlet channel 11; Described sewage disposal system 8 comprises the first sedimentation basin 81, regulating reservoir 82, coagulating basin 83, ramp type sedimentation basin 84 and the second sedimentation basin 85; Described first sedimentation basin, regulating reservoir, coagulating basin, ramp type sedimentation basin and the second sedimentation basin are connected successively by pipeline; Described second sedimentation basin exit is provided with inlet channel, and described inlet channel is provided with delivery port, and corresponding described delivery port is communicated with the water inlet of described first, second, third spray column respectively; Described gas skirt is integrated member, and described gas skirt is trapezoidal hollow core member; Bowl-shape filter element is equipped with in described first, second and third spray column; Waste gas filter 13 is connected between described gas skirt and described first spray column; Described ramp type sedimentation basin 84 comprises housing 841; Be provided with liner 842 in described housing 841, described housing bottom is "eight" shape, and described casing center place is provided with outer recessed groove 843, is provided with the continuous groove 844 corresponding with described groove bottom described liner.
Technological process is introduced: the flue gas of workshop and smoke stack emission is concentrated enter after waste gas filter 13, first spray column 2, second spray column 3 via blast pipe, gas skirt, removes a large amount of dust and part solubility waste gas; Through early stage, the waste gas of process enters in plasma reactor, effect in this region due to high energy particle, organic exhaust gas molecule is stimulated generation molecular scission, water simultaneously in air and oxygen also can produce the oxidizing species such as OH free radical, oxygen atom, ozone under high energy electron bombardment, these oxidizing species can with organic exhaust gas molecular reaction, it is made to decompose, thus organic components in degraded waste gas.
Also containing the material such as a small amount of small molecular organic acid and inorganic acid in waste gas after purification, for thoroughly eliminating the secondary pollution in waste gas, the waste gas after plasma treatment then enters in the 3rd spray column and carries out advanced treating, thorough degradation organic waste gas.Purified gas, through aiutage high altitude discharge, reaches national waste gas emission standard.
Advantage of the present invention and effect as follows: when after the 3rd spray column alkali lye drip washing, the temperature of flue gas from 127 degrees Celsius, pH value is less than 1, makes rapidly that flue-gas temperature is in 40 degrees Celsius, pH value is elevated to about 6.Alleviate very large burden to the waste gas treatment process of subsequent treatment like this, after when single tower, to add caustic soda be 5Kg, removal effect is very good.
The analytical instrument that result of implementation of the present invention adopts is as follows:
1. aerosol monitoring instrument 8530-32
Dust TrakII
Technical Sourcing Internation of the U.S.
2. total hydrocarbon, methane, NMHC detector
Total HC/CH4 Analyzer Model 3-900
J.U.M company of Germany
3. anemobiagraph
ZRQF Intelligent Wind Speed instrument
Beijing detecting instrument company
Intelligent temperature detector TM-902C
Detection range-50 DEG C-1300 DEG C
The testing result of four tower combination plasma treatment casting waste gas of the present invention is as follows:
| NH4+（mg/L） | Mg2+（mg/L） | NO3-（mg/L） | TN(total nitrogen) (mg/L) | pH | COD | Cu2+（mg/L） | |
| First dams case (interior) | 14912.6 | 39.2 | 17329.4 | 2.7 | 2300 | Lower than Monitoring lower-cut | |
| First dams case (outward) | 2731.4 | 32.6 | 7947.5 | 1.9 | 27300 | Lower than Monitoring lower-cut | |
| Second dams case | 7165.4 | 35.9 | 13724.6 | 2.3 | 26800 | Lower than Monitoring lower-cut | |
| Supernatant liquid on first spray column | 4.8 | 105.6 | 1.3 | 243 | |||
| Supernatant liquid on second spray column | Lower than Monitoring lower-cut | 110.9 | 10.1 | 158 | |||
| Clear liquid under first spray column | 1.9 | 101.4 | 12.2 | 163 | |||
| 3rd spray column | Lower than Monitoring lower-cut | 119.6 | 6.1 | 68 |
Claims (5)
1. the system of a tower combination plasma treatment casting waste gas, it is characterized in that, comprise the gas skirt, the first spray column, the second spray column, plasma processor and the 3rd spray column that are positioned at above exhaust outlet, described gas skirt is connected by the entrance of pipeline with described first spray column; Outlet and the described second spray column entrance of described first spray column pass through pipeline communication; The outlet of described second spray column is connected with described plasma processor entrance by pipeline, and the outlet of described plasma processor is communicated with by entrance with described 3rd spray column, and the exit of described 3rd spray column is connected to the blast pipe of emission; The bottom of described 3rd spray column is connected to sewage disposal system; The outlet of described sewage disposal system is communicated with the water inlet of described first, second, third spray column respectively by inlet channel; Described 3rd spray column water inlet is provided with and adds alkali tank, described in add alkali tank outlet be connected with described inlet channel;
Described sewage disposal system comprises the first sedimentation basin, regulating reservoir, coagulating basin, ramp type sedimentation basin and the second sedimentation basin; Described first sedimentation basin, regulating reservoir, coagulating basin, ramp type sedimentation basin and the second sedimentation basin are connected successively by pipeline; Described second sedimentation basin exit is provided with inlet channel, and described inlet channel is provided with delivery port, and corresponding described delivery port is communicated with the water inlet of described first, second, third spray column respectively.
2. the system of four tower combination plasma treatment casting waste gas as claimed in claim 1, it is characterized in that, described gas skirt is integrated member, and described gas skirt is trapezoidal hollow core member.
3. the system of four tower combination plasma treatment casting waste gas as described in claim 1,2, is characterized in that, be equipped with bowl-shape filter element in described first, second and third spray column.
4. the system of four tower combination plasma treatment casting waste gas as claimed in claim 1, is characterized in that, be connected to waste gas filter between described gas skirt and described first spray column.
5. the system of four tower combination plasma treatment casting waste gas as claimed in claim 1, it is characterized in that, described ramp type sedimentation basin comprises housing; Be provided with liner in described housing, described housing bottom is "eight" shape, and described casing center place is provided with outer recessed groove, is provided with the continuous groove corresponding with described groove bottom described liner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410684088.3A CN104707987B (en) | 2014-11-25 | 2014-11-25 | The system that a kind of four towers combination corona treatment casts waste gas |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410684088.3A CN104707987B (en) | 2014-11-25 | 2014-11-25 | The system that a kind of four towers combination corona treatment casts waste gas |
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| CN104707987A true CN104707987A (en) | 2015-06-17 |
| CN104707987B CN104707987B (en) | 2017-06-20 |
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| CN201410684088.3A Expired - Fee Related CN104707987B (en) | 2014-11-25 | 2014-11-25 | The system that a kind of four towers combination corona treatment casts waste gas |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110075694A (en) * | 2019-05-30 | 2019-08-02 | 江苏新聚环保科技有限公司 | Emission-control equipment |
| CN110463357A (en) * | 2017-01-23 | 2019-11-15 | 爱德华兹韩国有限公司 | Plasma production device and gas processing device |
| US11985754B2 (en) | 2017-01-23 | 2024-05-14 | Edwards Korea Ltd. | Nitrogen oxide reduction apparatus and gas treating apparatus |
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| US5505909A (en) * | 1991-07-12 | 1996-04-09 | Maschinen-Und Anlagenbau Grimma Gmbh | Process and a device for detoxifying the waste gases from waste incinerating plants |
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| JP2010075879A (en) * | 2008-09-26 | 2010-04-08 | Cs Engineering:Kk | Method of deodorizing exhaust |
| CN103143244A (en) * | 2013-03-08 | 2013-06-12 | 山东科源化工有限公司 | Treatment method for exhaust gases in production of profenofos |
| CN203183899U (en) * | 2012-10-26 | 2013-09-11 | 孙金魁 | Low-temperature plasma/photocatalyst treatment system for collecting waste gas in plastic molding and metal forming |
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2014
- 2014-11-25 CN CN201410684088.3A patent/CN104707987B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5505909A (en) * | 1991-07-12 | 1996-04-09 | Maschinen-Und Anlagenbau Grimma Gmbh | Process and a device for detoxifying the waste gases from waste incinerating plants |
| JP2010075879A (en) * | 2008-09-26 | 2010-04-08 | Cs Engineering:Kk | Method of deodorizing exhaust |
| CN101455929A (en) * | 2008-12-11 | 2009-06-17 | 上海纳米技术及应用国家工程研究中心有限公司 | High wind-speed tunnel air electric dust-collection system |
| CN101455938A (en) * | 2008-12-12 | 2009-06-17 | 上海惠罗环境工程有限公司 | Plasma biology deodorization technique and system of vent gas from steel-drum spray-painting production line |
| CN203183899U (en) * | 2012-10-26 | 2013-09-11 | 孙金魁 | Low-temperature plasma/photocatalyst treatment system for collecting waste gas in plastic molding and metal forming |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110463357A (en) * | 2017-01-23 | 2019-11-15 | 爱德华兹韩国有限公司 | Plasma production device and gas processing device |
| CN110463357B (en) * | 2017-01-23 | 2021-09-17 | 爱德华兹韩国有限公司 | Plasma generating apparatus and gas processing apparatus |
| US11430638B2 (en) | 2017-01-23 | 2022-08-30 | Edwards Limited | Plasma generating apparatus and gas treating apparatus |
| US11985754B2 (en) | 2017-01-23 | 2024-05-14 | Edwards Korea Ltd. | Nitrogen oxide reduction apparatus and gas treating apparatus |
| CN110075694A (en) * | 2019-05-30 | 2019-08-02 | 江苏新聚环保科技有限公司 | Emission-control equipment |
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| CN104707987B (en) | 2017-06-20 |
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Granted publication date: 20170620 Termination date: 20181125 |