CN105289262A - Waste gas treatment system - Google Patents
Waste gas treatment system Download PDFInfo
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- CN105289262A CN105289262A CN201510851316.6A CN201510851316A CN105289262A CN 105289262 A CN105289262 A CN 105289262A CN 201510851316 A CN201510851316 A CN 201510851316A CN 105289262 A CN105289262 A CN 105289262A
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Abstract
A waste gas treatment system comprises a gas reaction device and a heat treatment device. In the waste gas treatment system, to-be-treated waste gas is subjected to heat treatment through the heat treatment device; after the waste gas subjected to heat treatment is discharged from the heat treatment device for cooling, the cooled waste gas enters to the gas reaction device to be treated by a treatment liquid, and then the waste gas treated by the treatment liquid flows back to the heat treatment device through a gas return-flow pipe for high-temperature sterilization and burning. The waste gas treatment system has the advantages that a return-flow system is formed by the combination of a pyrolysis method and a wet-type method, so that even if hazardous substances in harmful waste gas cannot be completely catalyzed or decomposed in one cyclic treatment process, the remaining hazardous substances can flow back to be subjected to cyclic catalysis or decomposition, and the waste gas purification rate and the waste gas purification efficiency are effectively improved; besides, the waste gas treatment system is high in universality, and easy to implement and manage.
Description
Technical field
The present invention relates to a kind of exhaust treatment system, especially utilize the exhaust treatment system of adsorbent effect.
Background technology
Exhaust-gas treatment mainly pointer work that industrial waste gas such as dust granules thing, flue gas flue dust, gas with foreign flavor, toxic and harmful that industrial site produces are administered.Common exhaust-gas treatment has factory's fume and exhaust gas purifying, workshop dust waste gas purification, organic waste-gas purification, the purification of waste gas peculiar smell, acid-base waste gas purifying, purification of chemical waste gas etc.Conventional method has: water absorption method, aeration type activated sludge deodorization method, multimedium catalytic oxidation technique, because waste gas is very serious to the pollution of air, therefore, the exhaust-gas treatment environmental administration for chemical plant has formulated strict requirement, requires that each factory processes is up to standard and just to discharge afterwards.But, owing to lacking the design of retardation harmful exhaust by the time in traditional emission-control equipment, force harmful exhaust comparatively of short duration by accepting the time in waste gas treating tank, when causing decomposing, purifying harmful exhaust, because harmful exhaust accepts the deficiency of time, the harmful substance in harmful exhaust is caused to be difficult to complete catalysis, and then have influence on the purification efficiency of harmful exhaust, therefore, how to promote the purification efficiency of harmful exhaust, become be familiar with the art personage should faced by the important topic waiting to improve.
Summary of the invention
The object of the invention is to the defect existed for prior art, provide a kind of and form the exhaust treatment system with backflow by heat resolve method collocation damp process, its purification efficiency is high, cost is low, be easy to realize.
For achieving the above object, the present invention adopts following technical proposals: a kind of exhaust treatment system, comprise gas reaction device, annealing device, described pending waste gas is through annealing device heat treatment and by after gas passage discharge annealing device cooling down, enter gas reaction device, by being back to annealing device high-temperature sterilization by gas backstreaming pipe after the treatment fluid process in gas reaction device and burning, described annealing device comprises the high-temperature sterilization room be communicated with gas backstreaming pipe, be communicated with high-temperature sterilization room and contain the combustion chamber of fuel, described pending waste gas enters combustion chambers burn process through air inlet, to be discharged by gas passage and to gas reaction device after cooling down, described gas reaction device comprises shell, be placed in treatment fluid and the reaction guider of enclosure, the gas access connecting gas passage is offered above described shell, the gas vent of external gas return duct, treatment fluid floss hole, treatment fluid inlet, pending waste gas enters gas reaction device inside from gas access, and be directed in treatment fluid react in the drive of reaction guider, by reaction guider, the processed gas after reaction treatment is exported to gas outlet again, annealing device is entered via the gas backstreaming pipe being connected to gas outlet, described reaction guider comprises motor, transverse strands is established in the enclosure and by the transmission main shaft of driven by motor, the rotating multiple roller units be sheathed on transmission main shaft, equidistantly be separated by between every two roller units, each roller unit is by the wheel disc housing of hollow, vertically extend in the back position of wheel disc housing and immerse treatment fluid and the dividing plate separated by treatment fluid superjacent air space, be uniformly distributed in the centrifugal guide vane on hollow wheel disc housing internal perisporium, level to be placed in wheel disc housing and horizontal liquid level catch composition under being partially or completely immersed in treatment fluid, dividing plate is fixedly connected with shell, horizontal liquid level catch is fixedly connected on dividing plate or directly and is fixedly connected with shell, the antetheca of wheel disc housing has multiple passage, pending waste gas is filled with in the wheel disc housing of roller unit hollow from gas access through wheel disc housing front wall passage, motor drives roller unit axle centered by transmission main shaft to rotate through transmission main shaft, centrifugal guide vane enters reaction treatment under treatment fluid liquid level with gas, and go out liquid level from the interval between next roller unit and be filled with next roller unit, last by gas vent to gas backstreaming tube drainage reactive process gases.
Improve as one: the cooling down employing one of described gas passage is equipped with the cooling pond of domestic water to be heated, and described gas passage passes the domestic water to be heated in cooling pond, the gas in cooled gas path.
Improve as one: the shell of described gas reaction device is also provided with treatment fluid hydrothermal solution floss hole and process liquid cooling liquid refluxing opening, the described external delivery pump of hydrothermal solution floss hole and cooling pipe, cooling pipe is connected to process liquid cooling liquid refluxing opening through cooling pond, treatment fluid in gas reaction device is expelled to cooling pipe by hydrothermal solution floss hole, and under the effect of delivery pump, after being loaded into the treatment fluid in cooling pipe and the domestic water heat exchange to be heated in cooling pond, be back in gas reaction device.
Improve as one: described centrifugal guide vane can being connected on wheel disc housing internal perisporium of stirring of elasticity.
Improve as one: also comprise the preheating pipe be connected between gas backstreaming pipe and high-temperature sterilization room in described annealing device, the gas after gas reaction device reaction treatment is arranged the high-temperature sterilization room high-temperature sterilization into entering annealing device after preheating pipe carries out preheating by combustion chamber heat conduction again by gas backstreaming pipe.
Improve as one: described annealing device also comprises water heating function district, the gas after combustion chambers burn, in water heating function district heat-shift, derives annealing device after gas precooling; Water heating function district comprise be arranged at combustion chamber upper interior can inject by hot liquid by heating container, run through setting by heating container central cross and both sides connect the gas precooling pipe of combustion chamber, gas passage respectively, described gas after combustion chambers burn process is by entering the gas passage be connected with gas precooling pipe after the precooling of gas precooling pipe.
Exhaust treatment system of the present invention, heat resolve method is combined with damp process, and form return-flow system, even if the harmful substance when a circular treatment in harmful exhaust is difficult to complete catalysis or decomposition, also circulation catalysis or decomposition can be reentered through backflow, the purifying rate of effective lifting harmful exhaust and purification efficiency, and exhaust treatment system versatility of the present invention is high, is easy to realize and management.
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the first embodiment of exhaust treatment system of the present invention.
Fig. 2 is the structural representation of gas reaction device.
Fig. 3 is the structural representation of annealing device.
Fig. 4 is the structural representation of the another kind of embodiment of horizontal liquid level catch.
Fig. 5 is the schematic diagram of exhaust treatment system the second embodiment of the present invention.
Detailed description of the invention
As shown in Figure 1, the first specific embodiment of exhaust treatment system of the present invention, comprise gas reaction device 1, annealing device 2, be equipped with the cooling pond 7 of domestic water to be heated, described pending waste gas is through annealing device 2 heat treatment and discharge annealing device 2 by gas passage 4, entering gas reaction device 1 after the gas cooling down in the gas passage 4 of cooling 7 pairs, pond, being back to annealing device 2 high-temperature sterilization by gas backstreaming pipe 3 after being processed by the treatment fluid 5 in gas reaction device 1 and burning.
Described annealing device 2 comprise be communicated with gas backstreaming pipe 3 high-temperature sterilization room 2.3, to be communicated with high-temperature sterilization room 2.3 and to contain the combustion chamber 2.1 of fuel, described pending waste gas enters combustion chamber 2.1 through air inlet 2.4 and to burn process, is discharged and to gas reaction device 1 after cooling down by gas passage 4.In cyclic process, air inlet 2.4 is used for supplementing air feed simultaneously.
Can better contact with treatment fluid to make pending waste gas, accelerate waste gas purification process, promote the purification efficiency of waste gas, described gas reaction device 1 comprises shell 1.1, be placed in treatment fluid 5 and the reaction guider of shell 1.1 inside, the gas access 1.2 connecting gas passage 4 is offered above described shell 1.1, the gas vent 1.3 of external gas return duct 3, treatment fluid floss hole 1.4, treatment fluid inlet 1.5 (not indicating in figure), pending waste gas enters gas reaction device 1 from gas access 1.2 inner, and be directed into reaction in treatment fluid 5 in the drive of reaction guider, by reaction guider, the processed gas after reaction treatment is exported to gas vent 1.3 again, annealing device 2 is entered via the gas backstreaming pipe 3 being connected to gas vent 1.3 place.
Described reaction guider comprises motor, transverse strands to be located in shell 1.1 and by the transmission main shaft 1.6 of driven by motor, the rotating multiple roller units 1.7 be sheathed on transmission main shaft 1.6, equidistantly be separated by between every two roller units 1.7, each roller unit 1.7 is by the wheel disc housing 1.71 of hollow, vertically extend in the back position of wheel disc housing 1.71 and immerse treatment fluid 5 and the dividing plate 1.8 separated by treatment fluid 5 superjacent air space, be uniformly distributed in the centrifugal guide vane 1.72 on hollow wheel disc housing 1.71 internal perisporium, level is placed in wheel disc housing 1.71 and horizontal liquid level catch 1.9 under being partially or completely immersed in treatment fluid forms, dividing plate 1.8 is fixedly connected with shell 1.1, horizontal liquid level catch 1.9 is fixedly connected on dividing plate 1.8 or directly and is fixedly connected with shell 1.1, the antetheca of wheel disc housing 1.71 has multiple passage 1.73, pending waste gas is filled with in the wheel disc housing 1.71 of roller unit 1.7 hollow from gas access 1.2 through wheel disc housing 1.71 antetheca passage 1.73, motor drives roller unit 1.7 axle centered by transmission main shaft 1.6 to rotate through transmission main shaft 1.6, centrifugal guide vane 1.72 enters reaction treatment under treatment fluid 5 liquid level with gas, and go out liquid level from the interval between next roller unit 1.7 and be filled with next roller unit 1.7, finally discharge reactive process gases by gas vent 1.3 to gas backstreaming pipe 3.The effect of horizontal liquid level catch 1.9 and dividing plate 1.8 is: direct in this roller unit discharge liquid level after preventing gas from reacting under treatment fluid 5 liquid level, effectively prevent stagnant gas phenomenon, ensure that gas guides to the direction of regulation, namely orderly step by step through roller unit reaction treatment.Horizontal liquid level catch 1.9 also can adopt structure as shown in Figure 4, namely the below of horizontal liquid level catch 1.9 is connected with one or more layers orifice plate 1.91, orifice plate is distributed with pore 1.92, gas under liquid level after the pore of orifice plate breaks up centrifugation bubble many and less, increase the contact surface of gas and treatment fluid.
The cooling down employing one of the gas passage 4 of the present embodiment is equipped with the cooling pond 7 of domestic water to be heated, this cooling pond can be artificial hot spring pond, described gas passage 4 is through the domestic water to be heated in cooling pond 7, gas passage 4 and the domestic water heat exchange to be heated in cooling pond 7, make the gas cooling down in gas passage 4, domestic water to be heated heats up simultaneously, reasonable energy utilization, economical environment-protective.
Gas can better be driven to enter treatment fluid for making guider, himself does not carry gas again when departing from process liquid level, described centrifugal guide vane 1.72 can elasticity stir be connected on wheel disc housing 1.71 internal perisporium, for increasing the gas amount of bringing into, the centrifugal guide vane 1.72 of the present embodiment is arranged towards the direction low dip that rolling disk housing 1.71 rotates.Can enter after below treatment fluid liquid level by the centrifugal guide vane 1.72 be connected on wheel disc housing 1.71 internal perisporium that stirs of elasticity, in the inclined plane of centrifugal guide vane 1.72, hydraulic pressure overcomes elastic force, centrifugal guide vane 1.72 stirs on laminating wheel disc housing 1.71 internal perisporium, central shaft is rotated further, and centrifugal guide vane 1.72 resets after disengaging treatment fluid liquid level.This structure can also make central shaft better drive roller unit 1.7, reduces the burden to central shaft.Through test, the running speed of this reaction guider is at 50-100 rev/min, and its treatment effect is best.
In addition, the preheating pipe 2.6 be connected between gas backstreaming pipe 3 and high-temperature sterilization room 2.3 is also comprised in described annealing device 2, this preheating pipe 2.6 can be arranged in the hot wall district of combustion chamber 2.1 outer wall or annealing device 2, makes full use of combustion chamber 2.1 and to burn and the heat discharged carries out preheating to preheating pipe 2.6.Gas after gas reaction device 1 reaction treatment is arranged and entering high-temperature sterilization room 2.3 high-temperature sterilization of annealing device 2 after preheating pipe 2.6 is carried out preheating by combustion chamber 2.1 heat conduction by gas backstreaming pipe 3.
In addition, annealing device 2 also comprises water heating function district, and the gas after burning in combustion chamber 2.1 discharges annealing device 2 by heat transmission by after gas precooling through water heating function district; Water in water heating function district can be people and provides domestic hot-water or heat supply.Water heating function district comprise be arranged at combustion chamber 2.1 upper interior can inject by hot liquid 2.22 by heating container 2.2, run through setting by heating container 2.2 central cross and both sides connect the gas precooling pipe 2.21 of combustion chamber 2.1, gas passage 4 respectively, described gas after process is burnt in combustion chamber 2.1 by the precooling of gas precooling pipe 2.21 after enter the gas passage 4 be connected with gas precooling pipe 2.21.This structure can prevent combustion chamber 2.1 from directly contacting with the external world, not only has cooling effect to combustion chamber 2.1, can also its heat produced of Appropriate application, convenient to live heat supply for people.
The second specific embodiment shown in Fig. 5 is on the basis of the first embodiment, add the cooling process to treatment fluid 5, to avoid the treatment fluid temperature in gas reaction device 1 too high, affects gas treatment effect.The present embodiment is cost-saving, make rational use of resources, have employed the treatment fluid 5 cooling process of 7 pairs, cooling pond, the shell 1.1 of namely described gas reaction device 1 is also provided with treatment fluid hydrothermal solution floss hole 1.11 and process liquid cooling liquid refluxing opening 1.12, the external delivery pump 1.14 of described hydrothermal solution floss hole 1.11 and cooling pipe 1.13, cooling pipe 1.13 is connected to process liquid cooling liquid refluxing opening 1.12 through cooling pond 7, treatment fluid 5 in gas reaction device 1 is expelled to cooling pipe 1.13 by hydrothermal solution floss hole 1.11, and under the effect of delivery pump 1.14, after being loaded into the treatment fluid in cooling pipe 1.13 and the domestic water heat exchange to be heated in cooling pond 7, be back in gas reaction device 1.
Above-mentioned detailed description of the invention is used for explaining and the present invention is described, instead of limits the invention, and in the protection domain of spirit of the present invention and claim, any amendment make the present invention and change, all fall into protection scope of the present invention.
Claims (10)
1. an exhaust treatment system, it is characterized in that: comprise gas reaction device (1), annealing device (2), described pending waste gas is through annealing device (2) heat treatment and by after gas passage (4) discharge annealing device (2) cooling down, enter gas reaction device (1), be back to annealing device (2) high-temperature sterilization by gas backstreaming pipe (3) after being processed by the treatment fluid (5) in gas reaction device (1) and burn, described annealing device (2) comprises the high-temperature sterilization room (2.3) be communicated with gas backstreaming pipe (3), be communicated with high-temperature sterilization room (2.3) and contain the combustion chamber (2.1) of fuel, described pending waste gas enters combustion chamber (2.1) burning process through air inlet (2.4), by gas passage (4) discharge and to gas reaction device (1) after cooling down, described gas reaction device (1) comprises shell (1.1), be placed in the inner treatment fluid (5) of shell (1.1) and reaction guider, the gas access (1.2) connecting gas passage (4) is offered in described shell (1.1) top, the gas vent (1.3) of external gas return duct (3), treatment fluid floss hole (1.4), treatment fluid inlet (1.5), it is inner that pending waste gas enters gas reaction device (1) from gas access (1.2), and be directed into reaction in treatment fluid (5) in the drive of reaction guider, by reaction guider, the processed gas after reaction treatment is exported to gas vent (1.3) again, annealing device (2) is entered via the gas backstreaming pipe (3) being connected to gas vent (1.3) place, described reaction guider comprises motor, transverse strands to be located in shell (1.1) and by the transmission main shaft (1.6) of driven by motor, the rotating multiple roller units (1.7) be sheathed on transmission main shaft (1.6), equidistantly be separated by between every two roller units (1.7), each roller unit (1.7) is by the wheel disc housing (1.71) of hollow, vertically extend in the back position of wheel disc housing (1.71) and immerse treatment fluid (5) and the dividing plate (1.8) separated by treatment fluid (5) superjacent air space, be uniformly distributed in the centrifugal guide vane (1.72) on hollow wheel disc housing (1.71) internal perisporium, level to be placed in wheel disc housing (1.71) and horizontal liquid level catch (1.9) composition under being partially or completely immersed in treatment fluid, dividing plate (1.8) is fixedly connected with shell (1.1), horizontal liquid level catch (1.9) is fixedly connected on dividing plate (1.8) or is directly fixedly connected with shell (1.1), the antetheca of wheel disc housing (1.71) has multiple passage (1.73), pending waste gas is filled with in the wheel disc housing (1.71) of roller unit (1.7) hollow from gas access (1.2) through wheel disc housing (1.71) antetheca passage (1.73), motor drives roller unit (1.7) axle centered by transmission main shaft (1.6) to rotate through transmission main shaft (1.6), centrifugal guide vane (1.72) enters reaction treatment under treatment fluid (5) liquid level with gas, and go out liquid level from the interval between next roller unit (1.7) and be filled with next roller unit (1.7), finally discharge reactive process gases by gas vent (1.3) to gas backstreaming pipe (3).
2. exhaust treatment system according to claim 1, it is characterized in that: the cooling down employing one of described gas passage (4) is equipped with the cooling pond (7) of domestic water to be heated, described gas passage (4) passes the domestic water to be heated of cooling pond (7), the gas in cooled gas path (4).
3. exhaust treatment system according to claim 2, it is characterized in that: the shell (1.1) of described gas reaction device (1) is also provided with treatment fluid hydrothermal solution floss hole (1.11) and process liquid cooling liquid refluxing opening (1.12), described hydrothermal solution floss hole (1.11) external delivery pump and cooling pipe (1.13), cooling pipe (1.13) is connected to process liquid cooling liquid refluxing opening (1.12) through cooling pond (7), treatment fluid (5) in gas reaction device (1) is expelled to cooling pipe (1.13) by hydrothermal solution floss hole (1.11), and under the effect of delivery pump, after being loaded into the treatment fluid in cooling pipe (1.13) and the domestic water heat exchange to be heated in cooling pond (7), be back in gas reaction device (1).
4. the exhaust treatment system according to claim 1 or 2 or 3, is characterized in that: described centrifugal guide vane (1.72) can being connected on wheel disc housing internal perisporium of stirring of elasticity.
5. the exhaust treatment system according to claim 1 or 2 or 3, it is characterized in that: also comprise the preheating pipe (2.6) be connected between gas backstreaming pipe (3) and high-temperature sterilization room (2.3) in described annealing device (2), the gas after gas reaction device (1) reaction treatment is arranged high-temperature sterilization room (2.3) high-temperature sterilization into entering annealing device (2) after preheating pipe (2.6) carries out preheating by combustion chamber (2.1) heat conduction again by gas backstreaming pipe (3).
6. exhaust treatment system according to claim 4, it is characterized in that: also comprise the preheating pipe (2.6) be connected between gas backstreaming pipe (3) and high-temperature sterilization room (2.3) in described annealing device (2), gas backstreaming pipe (3) is entering high-temperature sterilization room (2.3) high-temperature sterilization of annealing device (2) after being arranged by the gas after gas reaction device (1) reaction treatment and carrying out preheating into preheating pipe by combustion chamber (2.1) heat conduction.
7. the exhaust treatment system according to claim 1 or 2 or 3, it is characterized in that: described annealing device (2) also comprises water heating function district, gas after the burning of combustion chamber (2.1), in water heating function district heat-shift, derives annealing device (2) after gas precooling; Water heating function district comprise be arranged at combustion chamber (2.1) upper interior can inject by hot liquid (2.22) by heating container (2.2), run through setting by heating container (2.2) central cross and both sides connect the gas precooling pipe (2.21) of combustion chamber (2.1), gas passage (4) respectively, described gas after combustion chamber (2.1) burning process enters by after gas precooling pipe (2.21) precooling the gas passage (4) be connected with gas precooling pipe (2.21).
8. exhaust treatment system according to claim 4, it is characterized in that: described annealing device (2) also comprises water heating function district, gas after the burning of combustion chamber (2.1), in water heating function district heat-shift, derives annealing device (2) after gas precooling; The hot water function thermal treatment zone comprise be arranged at combustion chamber (2.1) upper interior can inject by hot liquid (2.22) by heating container (2.2), run through setting by heating container (2.2) central cross and both sides connect the gas precooling pipe (2.21) of combustion chamber, gas passage (4) respectively, described gas after combustion chamber (2.1) burning process enters by after gas precooling pipe (2.21) precooling the gas passage (4) be connected with gas precooling pipe (2.21).
9. exhaust treatment system according to claim 5, it is characterized in that: described annealing device (2) also comprises water heating function district, gas after the burning of combustion chamber (2.1), in water heating function district heat-shift, derives annealing device (2) after gas precooling; The hot water function thermal treatment zone comprise be arranged at combustion chamber (2.1) upper interior can inject by hot liquid (2.22) by heating container (2.2), run through setting by heating container (2.2) central cross and both sides connect the gas precooling pipe (2.21) of combustion chamber, gas passage (4) respectively, described gas after combustion chamber (2.1) burning process enters by after gas precooling pipe (2.21) precooling the gas passage (4) be connected with gas precooling pipe (2.21).
10. exhaust treatment system according to claim 6, it is characterized in that: described annealing device (2) also comprises water heating function district, gas after the burning of combustion chamber (2.1), in water heating function district heat-shift, derives annealing device (2) after gas precooling; The hot water function thermal treatment zone comprise be arranged at combustion chamber (2.1) upper interior can inject by hot liquid (2.22) by heating container (2.2), run through setting by heating container (2.2) central cross and both sides connect the gas precooling pipe (2.21) of combustion chamber, gas passage (4) respectively, described gas after combustion chamber (2.1) burning process enters by after gas precooling pipe (2.21) precooling the gas passage (4) be connected with gas precooling pipe (2.21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510851316.6A CN105289262B (en) | 2015-11-30 | 2015-11-30 | Waste gas treatment system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510851316.6A CN105289262B (en) | 2015-11-30 | 2015-11-30 | Waste gas treatment system |
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| CN105289262A true CN105289262A (en) | 2016-02-03 |
| CN105289262B CN105289262B (en) | 2017-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510851316.6A Expired - Fee Related CN105289262B (en) | 2015-11-30 | 2015-11-30 | Waste gas treatment system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2109243U (en) * | 1991-12-20 | 1992-07-08 | 孟禹 | Gyratory sifter plate filling bed type tail-gas desulfurization device |
| JP2002257314A (en) * | 2001-03-02 | 2002-09-11 | Ngk Insulators Ltd | Hot blast generator |
| CN204447625U (en) * | 2014-11-24 | 2015-07-08 | 周瑞麟 | Air cleaning unit |
| CN104841222A (en) * | 2014-02-19 | 2015-08-19 | 王刚 | Ducted wet dedusting and desulfurization integration machine |
-
2015
- 2015-11-30 CN CN201510851316.6A patent/CN105289262B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2109243U (en) * | 1991-12-20 | 1992-07-08 | 孟禹 | Gyratory sifter plate filling bed type tail-gas desulfurization device |
| JP2002257314A (en) * | 2001-03-02 | 2002-09-11 | Ngk Insulators Ltd | Hot blast generator |
| CN104841222A (en) * | 2014-02-19 | 2015-08-19 | 王刚 | Ducted wet dedusting and desulfurization integration machine |
| CN204447625U (en) * | 2014-11-24 | 2015-07-08 | 周瑞麟 | Air cleaning unit |
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| CN105289262B (en) | 2017-04-26 |
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Granted publication date: 20170426 Termination date: 20191130 |