CN210206402U - Asphalt flue gas collecting and processing system - Google Patents
Asphalt flue gas collecting and processing system Download PDFInfo
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- CN210206402U CN210206402U CN201920706703.4U CN201920706703U CN210206402U CN 210206402 U CN210206402 U CN 210206402U CN 201920706703 U CN201920706703 U CN 201920706703U CN 210206402 U CN210206402 U CN 210206402U
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Abstract
The utility model discloses a processing system is collected to pitch flue gas, including collection module, processing module, emission module and well accuse module, processing module includes spray column, photodissociation catalytic engine, adsorption tank and water pump, and spray column, photodissociation catalytic engine, adsorption tank pass through the pipeline and connect gradually, and the water pump is connected with the spray column pipe, and collection module and spray column pipe connection, adsorption tank and emission module pipe connection. The utility model discloses a collection module, processing module, emission module carry out centralized processing and emission to the flue gas. ToAdopt spray column, photodissociation catalytic engine, adsorption tank to realize tertiary treatment in the reason module, after this scheme of use is handled the flue gas, to the testing result display of flue gas, the average concentration of asphalt smoke in the flue gas of chimney emission reduces to 3.89mg/m3And even lower. The system can effectively reduce the content of asphalt smoke in the smoke and effectively reduce the pungent smell of a production area.
Description
Technical Field
The utility model relates to a pitch exhaust-gas treatment technical equipment field, in particular to processing system is collected to pitch flue gas.
Background
In the production process of asphalt, high system temperature (about 150-190 ℃) causes the decomposition of high molecular polymers in the asphalt to generate gases with pungent odor, which not only affects the environment of a factory, but also can cause respiratory tract and eye discomfort.
Patent No. CN201620368110.8 discloses a purification device for treating asphalt flue gas. Wherein, utility model patent "a be used for handling pitch gas cleaning device" uses spray column, photocatalytic decomposition to handle the flue gas, then discharges through the fan.
And (4) processing technical analysis. The washing treatment efficiency of the water curtain tower is about 53 percent, the treatment efficiency of the photo-oxidative catalysis is about 42 percent, and the combined treatment efficiency of the water curtain tower and the photo-oxidative catalysis is about 72.7 percent.
At present, the average concentration of the flue gas produced by common manufacturers for producing asphalt is 25.5mg/m3, and according to theoretical calculation, after washing by a water curtain tower and photo-oxidation catalysis treatment, the average concentration of the flue gas is reduced to 6.95mg/m (25.5 (1-0.53) (1-0.42) is 6.95mg/m), and the data is not ideal and has a certain distance from an ideal target.
SUMMERY OF THE UTILITY MODEL
According to one aspect of the utility model, an asphalt flue gas collecting and processing system is provided, which comprises a collecting module, a processing module, a discharging module and a central control module, wherein the central control module is respectively in communication connection with the collecting module, the processing module and the discharging module;
the collecting module is configured to collect and input the flue gas into the processing module;
the processing module is configured to purify and input the flue gas into the discharging module;
the emission module is configured to emit the purified flue gas.
The utility model carries out centralized treatment and discharge to the flue gas through the collecting module, the processing module and the discharging module; in addition, a spray tower, a photolysis catalytic machine and an adsorption box are adopted in the treatment module to realize three-stage treatment, and the centrally recovered flue gas is subjected to water curtain washing, photocatalytic degradation and activated carbon adsorption and then is discharged through a chimney, so that the concentration of the flue gas is reduced to the minimum; and, the utility model discloses well in use accuse module carries out joint control to every processing module to ensure that every module can the steady operation.
In some embodiments, the spray tower comprises a tower body, a jet pipe and a flue gas compression pump, wherein the flue gas compression pump is arranged at an air inlet of the tower body, and the jet pipe is spirally arranged on the inner wall of the tower body and is connected with the water pump.
From this, in the flue gas passes through the compression back input tower body of flue gas compression pump, the particle of flue gas received the compression this moment, and the flue gas particle is in high-speed motion state, and the flue gas of high-speed motion washes through jet-flow tube spun water curtain, and the flue gas is fully dissolved in water to improve the dissolving effect of flue gas. Moreover, the jet pipe is spiral, and the sprayed water curtain is formed into a nearly spiral shape, so that the jet pipe is fully contacted with the flue gas, and the dissolving effect of the flue gas is further improved.
In some embodiments, the spray tower further comprises a spray screen disposed within the tower body, the spray screen being positioned above the jet tube.
From this, spray the net and be netted water pipe, for guaranteeing that the flue gas fully dissolves, spray the net and be the last line of defence in the spray column, this way line of defence can guarantee the washing effect of the flue gas in the tower.
In some embodiments, the photolytic catalyst includes a body, a plurality of lamp nets, and a plurality of catalytic nets; the plurality of light nets and the plurality of catalysis nets are arranged in the machine body, and the plurality of light nets and the plurality of catalysis nets are arranged alternately.
Therefore, the washed flue gas sequentially passes through the plurality of photocatalytic zones, clean gas is discharged through a gas outlet of the machine body, the catalytic net adopts a three-dimensional foam nickel plate as a substrate, a TiO coating is arranged on the substrate, and after photocatalytic oxidation treatment, effective and respective oxidative decomposition of toxic substances in the flue gas is ensured.
In some embodiments, the photolysis catalyst further comprises a filter screen positioned near the air inlet end of the body.
Therefore, before passing through the photocatalytic zone, the flue gas is filtered through the filter screen, most large-particle molecules in the flue gas are filtered by the filter screen, and the toxic gas is left to be catalytically decomposed in the photocatalytic zone.
In some embodiments, the adsorption box comprises a box body, a cooling device and a plurality of activated carbon adsorption plates, wherein the activated carbon adsorption plates are arranged in the box body in an array mode, and the cooling device is arranged at an air inlet of the box body.
From this, the flue gas is cooled down through cooling device, and all molecules in the flue gas, particle velocity of motion reduce for the flue gas low speed passes through the active carbon adsorption board, improves the adsorption effect of active carbon adsorption board to the flue gas.
In some embodiments, the collecting module comprises a first fan, a gas collecting hood and an induced duct, one end of the induced duct is connected with the gas inlet of the spray tower, the other end of the induced duct is connected with the waste gas outlet through the gas collecting hood, and the first fan is connected with the induced duct.
From this, in the collection process of collection module, carry out the drainage by first fan, the gas collecting channel is concentrated the abandonment of waste gas delivery outlet and is collected to in inputing the processing module through the induced duct.
In some embodiments, the exhaust module includes a chimney and a second fan, the second fan is disposed at the gas outlet of the adsorption tank, and the chimney is disposed at an output of the second fan.
Therefore, in the emission process of the emission module, the second fan conducts drainage, and the flue gas is emitted to the atmosphere through the chimney.
In some embodiments, the center control module comprises an operation panel and a display panel, the display panel is arranged on the operation panel, the operation panel adopts a button control cabinet, and the control mode of the operation panel is physical quantity control.
Therefore, the button control cabinet is low in cost, simple to maintain, reliable in mature and reliable in operation of the technology of physical quantity control and low in cost.
The utility model has the advantages that: the utility model discloses a collection module, processing module, emission module carry out centralized processing and emission to the flue gas. Adopt spray column, photodissociation catalytic engine, adsorption tank to realize tertiary the processing among the processing module, after this scheme of use handles the flue gas, to the testing result display of flue gas, the average concentration of asphalt smoke in the flue gas of chimney emission reduces to 3.89mg/m3, and is lower even, and the content of asphalt smoke in this system can effectual reduction flue gas effectively alleviates the pungent smell in production area.
Drawings
Fig. 1 is a schematic plan view of an asphalt flue gas collection and treatment system according to an embodiment of the present invention.
FIG. 2 is a schematic plan view of a module of the asphalt flue gas collection and treatment system shown in FIG. 1.
Reference numbers in the figures: 1-collection module, 11-first fan, 12-gas collecting hood, 13-induced draft tube, 2-treatment module, 21-spray tower, 211-tower body, 212-jet tube, 213-flue gas compression pump, 214-spray net, 215-gas baffle, 22-photolysis catalytic machine, 221-machine body, 222-lamp net, 223-catalytic net, 224-filter screen, 23-adsorption box, 231-box body, 232-cooling device, 233-active carbon adsorption plate, 24-water pump, 3-discharge module, 31-chimney and 32-second fan.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1-2 schematically show according to the utility model discloses an embodiment's processing system is collected to pitch flue gas, including collection module 1, processing module 2, emission module 3 and well accuse module, well accuse module respectively with collection module 1, processing module 2, emission module 3 communication connection, processing module 2 includes spray column 21, photolysis catalytic engine 22, adsorption tank 23 and water pump 24. The water pump 24 is made of an acid and alkali resistant fluorine alloy pump, and the water pump 24 has corrosion resistance and low cost compared with other water pumps 24. The spray tower 21, the photolysis catalytic machine 22 and the adsorption tank 23 are sequentially connected through pipelines, the water pump 24 is connected with the spray tower 21 through a pipeline, the collection module 1 is connected with the spray tower 21 through a pipeline, and the adsorption tank 23 is connected with the emission module 3 through a pipeline;
the collecting module 1 is configured to collect and input the flue gas into the processing module 2;
the processing module 2 is configured to purify the flue gas and input the purified flue gas into the discharge module 3;
the exhaust module 3 is configured to exhaust the purified flue gas.
The utility model carries out centralized treatment and discharge to the flue gas through the collection module 1, the treatment module 2 and the discharge module 3; in addition, the treatment module 2 adopts a spray tower 21, a photolysis catalytic machine 22 and an adsorption tank 23 to realize three-stage treatment, and the centrally recovered flue gas is subjected to water curtain washing, photocatalytic degradation and activated carbon adsorption and then is discharged through a chimney 31, so that the concentration of the flue gas is reduced to the minimum; and, again, the utility model discloses well in use accuse module carries out joint control to every processing module 2 to ensure that every module can the steady operation.
In the embodiment, glass fiber reinforced plastic, enamel, carbon steel and stainless steel are used as alternative materials of the main body of the three-stage treatment device, and the comparison process shows that the glass fiber reinforced plastic and the enamel are difficult to maintain and have high process requirements, so that the glass fiber reinforced plastic and the enamel are not suitable for being used as materials of the equipment. The spray liquid of the spray tower 21 has a PH of 12 and is highly corrosive, and carbon steel is easily rusted in such an environment. The stainless steel has the performance meeting the requirements and is convenient to maintain, and although the price is higher, the stainless steel is finally determined to be adopted as the main materials of the spray tower 21, the photolysis catalytic machine 22 and the adsorption tank 23.
Referring to fig. 2, the spray tower 21 includes a tower body 211, a spray pipe 212, and a flue gas compression pump 213. The tower body 211 is made of stainless steel by welding after molding. The flue gas compression pump 213 is arranged at the air inlet of the tower body 211, and the jet pipe 212 is spirally arranged on the inner wall of the tower body 211 and connected with the water pump 24. The flue gas passes through in flue gas compression pump 213 compresses the back input tower body 211, and the particle of flue gas receives the compression this moment, and the flue gas particle is in high-speed motion state, and the flue gas of high-speed motion washes through the water curtain of jet-propelled pipe 212 spun, and the flue gas is fully dissolved in water to improve the dissolving effect of flue gas. Moreover, the jet pipe 212 is spiral, and the sprayed water curtain is formed to be close to spiral, so that the jet pipe can be fully contacted with the flue gas, and the dissolving effect of the flue gas is further improved. The tower body 211 is also internally provided with an air baffle plate 215, the air baffle plate 215 is an arc-shaped plate, and when the flue gas compressed by the flue gas compression pump 213 is output, the flue gas is firstly blocked by the air baffle plate 215 to change the motion track of the flue gas, so that the flue gas can be prevented from rapidly passing through the tower body 211.
Referring to fig. 2, the spray tower 21 further includes a spray net 214 disposed in the tower body 211, the spray net 214 is located above the spray pipe 212, the spray net is formed by combining a plurality of water pipes which are arranged in a cross manner, and the water pipes are provided with spray openings. The spraying net 214 is a netted water pipe, and in order to ensure that the flue gas is fully dissolved, the spraying net 214 is the last line of defense in the spraying tower 21, and the line of defense can ensure the washing effect of the flue gas in the tower.
Referring to fig. 2, the photolysis catalyst 22 includes a body 221, a plurality of lamp nets 222, and a plurality of catalyst nets 223; the body 221 is formed by welding after stainless steel is molded, a plurality of lamp nets 222 and a plurality of catalytic nets 223 are arranged in the body 221, the lamp nets 222 are ultraviolet lamps, and the lamp nets 222 and the catalysts are alternately arranged. Washed flue gas passes through a plurality of photocatalytic zones in sequence, clean gas is discharged from a gas outlet of the machine body 221, the catalytic net 223 adopts a three-dimensional foam nickel plate as a substrate, a TiO coating is arranged on the substrate, and after photocatalytic oxidation treatment, effective and respective oxidative decomposition of toxic substances in the flue gas is ensured.
With reference to fig. 2, the photolysis catalyst 22 further includes a filter screen 224, the filter screen 224 is located near the air inlet end of the body 221, and the filter screen 224 is a molecular sieve. Before passing through the photocatalytic zone, the flue gas is filtered by the filter screen 224, most of large-particle molecules in the flue gas are filtered by the filter screen 224, and the toxic gas is left for catalytic decomposition in the photocatalytic zone.
Referring to fig. 2, the adsorption box 23 includes a box 231, a cooling device 232 and a plurality of activated carbon adsorption plates 233, the activated carbon adsorption plates 233 are arranged in the box 231 in an array, the cooling device 232 is arranged at an air inlet of the box 231, the cooling device 232 is a serpentine coiled pipe body, a cooling box is arranged on an outer cover of the pipe body, flue gas is input from the pipe body and exchanges heat with cooling liquid in the cooling box to achieve a condensation effect. The flue gas is cooled by the cooling device 232, and the moving speed of all molecules and particles in the flue gas is reduced, so that the flue gas passes through the active carbon adsorption plate 233 at a low speed, and the adsorption effect of the active carbon adsorption plate 233 on the flue gas is improved.
Referring to fig. 2, the collection module 1 includes a first fan 11, a gas collecting hood 12, and a draft duct 13. The first fan 11 is a centrifugal fan, and has the characteristics of easy installation and easy maintenance. The induced draft pipe 13 is a galvanized steel pipe, and the galvanized steel pipe has long service life and moderate price. The gas-collecting channel 12 is trumpet-shaped and made of galvanized steel. One end of the induced air pipe 13 is connected with an air inlet of the spray tower 21, the other end of the induced air pipe 13 is connected with a waste gas outlet through the gas collecting hood 12, and the first fan 11 is connected with the induced air pipe 13. In the collecting process of the collecting module 1, the first fan 11 conducts drainage, and the gas collecting hood 12 collects the waste of the waste gas outlet in a centralized manner and inputs the waste gas into the processing module 2 through the air guiding pipe 13.
Referring to fig. 2, the exhaust module 3 includes a stack 31 and a second fan 32. The first fan 11 is a centrifugal fan, and has the characteristics of easy installation and easy maintenance. The chimney 31 is made of a thread welded steel. The second fan 32 is disposed at an air outlet of the adsorption tank 23, and the chimney 31 is disposed at an output port of the second fan 32. In the discharging process of the discharging module 3, the second fan 32 conducts flow guiding, and the flue gas is discharged to the atmosphere through the chimney 31.
Referring to fig. 2, the center control module includes an operation panel and a display panel. The display panel is arranged on the operation table. The display panel is the LED display lamp plate. The operation panel adopts a button control cabinet, and the control mode of the operation panel is physical quantity control. The button control cabinet has the advantages of low cost, simple maintenance, mature and reliable technology of physical quantity control and low cost.
In this embodiment, the flue gas emission of a certain plant area is modified. The smoke emission of the plant area is mainly concentrated in 5 volatilization areas of a development tank, a reaction kettle, an emulsion tank, a rubber oil tank and a departure platform, and the data is as follows:
as can be seen from the above table, the emission concentrations of 16 flue gas discharge openings of 5 areas of a factory only with 5 discharge openings of a rubber oil tank and an emulsion tank meet the national standard, and the average concentration of the asphalt flue gas of the 16 discharge openings is 25.5mg/m3Exceeding 20mg/m regulated by national Integrated emission Standard of atmospheric pollutants GB16297-1996)3And (4) standard. It can be seen that the current asphalt flue gas treatment mode of the plant area does not meet the actual requirement of the flue gas in the asphalt production process for meeting the requirement of clean production, has a large difference with the national environmental protection laws of the people's republic of China, the emission standards of petroleum refining industry pollutants (GB 31570) 2015 and the comprehensive emission standards of atmospheric pollutants (GB16297-1996) about the comprehensive emission requirements of the atmospheric pollutants, and urgently needs to effectively treat the asphalt flue gas in the production process.
With reference to fig. 1-2, the present scheme collects the flue gas of 16 exhaust ports (i.e. exhaust gas outlets) by arranging the collection module 1, the gas collecting channel 12 in the treatment module 2 is provided with 16 corresponding exhaust ports, the induced draft tube 13 is provided with a plurality of induced draft tubes, and the first fan 11 is provided with a corresponding one. The processing module 2 collects the smoke and then carries out centralized processing through the processing module 2, then the smoke and the smoke are discharged in a centralized way through the discharging module 3, and after the scheme is implemented, the smoke concentration of the chimney 31 is detected, and the average asphalt smoke concentration (mg/m)3) The concentration was 3.89mg/m 3.
The utility model discloses a concrete working process:
s1, collecting flue gas: 16 row openings (namely, waste gas output openings) are arranged by the collecting module 1, under the flow guide of the first fans 11, 16 gas collecting hoods 12 respectively collect 16 row openings independently, and concentrated flow guide is carried out by the plurality of air guide pipes 13, and collected smoke is output to the processing module 2 in a concentrated manner.
S2, centralized processing: three-stage treatment, water curtain washing, photocatalytic degradation and activated carbon adsorption.
(1) The flue gas is compressed by the flue gas compression pump 213 and then is input into the tower body 211, particles of the flue gas are compressed at the moment, the particles of the flue gas are in a high-speed motion state, the flue gas which moves at a high speed is washed by a water curtain sprayed by the jet pipe 212, the flue gas is fully dissolved in water, and the treated flue gas is input into the photolysis catalytic machine 22;
(2) the washed flue gas passes through the filter screen 224 and the plurality of photocatalytic zones in sequence and is finally input into the adsorption tank 23 through the air outlet of the machine body 221;
(3) in the flue gas input adsorption tank 23 after the photolysis, the flue gas is cooled through cooling device 232, all molecules in the flue gas and particle movement speed are reduced, the flue gas passes through activated carbon adsorption plate 233 at a low speed, and the flue gas is attached to activated carbon adsorption plate 233.
The flue gas after the third-stage treatment is input into an exhaust module 3.
S3, smoke emission: the second fan 32 is used for guiding the flow, and the flue gas is discharged to the atmosphere through a chimney 31.
The utility model has the advantages that: the utility model discloses a collection module 1, processing module 2, emission module 3 carry out centralized processing and emission to the flue gas. Adopt spray column 21, photodissociation catalytic engine 22, adsorption tank 23 to realize tertiary processing among the processing module 2, after this scheme of use is handled the flue gas, to the testing result of flue gas demonstration, the average concentration of the pitch cigarette in the flue gas that chimney 31 discharged reduces to 3.89mg/m3And even lower, the system can effectively reduce the content of asphalt smoke in the smoke and effectively reduce the pungent smell of a production area.
What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.
Claims (9)
1. The asphalt flue gas collection and treatment system is characterized by comprising a collection module (1), a treatment module (2), a discharge module (3) and a central control module, wherein the central control module is in communication connection with the collection module (1), the treatment module (2) and the discharge module (3) respectively, the treatment module (2) comprises a spray tower (21), a photolysis catalytic machine (22), an adsorption tank (23) and a water pump (24), the spray tower (21), the photolysis catalytic machine (22) and the adsorption tank (23) are connected in sequence through pipelines, the water pump (24) is in pipeline connection with the spray tower (21), the collection module (1) is in pipeline connection with the spray tower (21), and the adsorption tank (23) is in pipeline connection with the discharge module (3);
the collecting module (1) is configured to collect and input the flue gas into the processing module (2);
the treatment module (2) is configured to purify the flue gas and input the purified flue gas into the discharge module (3);
the emission module (3) is configured to emit the purified flue gas.
2. The asphalt flue gas collecting and processing system according to claim 1, wherein the spray tower (21) comprises a tower body (211), a spray pipe (212) and a flue gas compression pump (213), the flue gas compression pump (213) is arranged at an air inlet of the tower body (211), and the spray pipe (212) is spirally arranged on the inner wall of the tower body (211) and connected with a water pump (24).
3. The asphalt flue gas collection and treatment system according to claim 2, wherein the spray tower (21) further comprises a spray net (214) arranged in the tower body (211), and the spray net (214) is positioned above the jet pipe (212).
4. The asphalt flue gas collection and treatment system according to claim 1, wherein the photolysis catalyst (22) comprises a body (221), a plurality of lamp nets (222) and a plurality of catalyst nets (223); the plurality of lamp nets (222) and the plurality of catalysis nets (223) are arranged in the machine body (221), and the plurality of lamp nets (222) and the plurality of catalysis nets are arranged alternately.
5. The asphalt flue gas collecting and processing system according to claim 4, wherein the photolysis catalyst machine (22) further comprises a filter screen (224), and the filter screen (224) is positioned near the air inlet end of the machine body (221).
6. The asphalt flue gas collecting and processing system according to claim 1, wherein the adsorption box (23) comprises a box body (231), a cooling device (232) and a plurality of activated carbon adsorption plates (233), the plurality of activated carbon adsorption plates (233) are arranged in the box body (231) in an array, and the cooling device (232) is arranged at an air inlet of the box body (231).
7. The asphalt flue gas collection and treatment system according to any one of claims 1 to 6, wherein the collection module (1) comprises a first fan (11), a gas collecting hood (12) and an induced duct (13), one end of the induced duct (13) is connected with an air inlet of the spray tower (21), the other end of the induced duct (13) is connected with an exhaust gas outlet through the gas collecting hood (12), and the first fan (11) is connected with the induced duct (13).
8. The asphalt flue gas collection and treatment system according to any one of claims 1 to 6, wherein the exhaust module (3) comprises a chimney (31) and a second fan (32), the second fan (32) is arranged at the gas outlet of the adsorption tank (23), and the chimney (31) is arranged at the output of the second fan (32).
9. The asphalt flue gas collection and treatment system according to any one of claims 1 to 6, wherein the central control module comprises an operation table and a display panel, the display panel is arranged on the operation table, the operation table adopts a button control cabinet, and the control mode of the operation table is physical quantity control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920706703.4U CN210206402U (en) | 2019-05-16 | 2019-05-16 | Asphalt flue gas collecting and processing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920706703.4U CN210206402U (en) | 2019-05-16 | 2019-05-16 | Asphalt flue gas collecting and processing system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112827305A (en) * | 2021-01-26 | 2021-05-25 | 贵州恒绿源环保有限公司 | A dust treatment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112827305A (en) * | 2021-01-26 | 2021-05-25 | 贵州恒绿源环保有限公司 | A dust treatment device |
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