CN212467680U - Asphalt flue gas treatment system of asphalt mixing plant - Google Patents
Asphalt flue gas treatment system of asphalt mixing plant Download PDFInfo
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- CN212467680U CN212467680U CN202020779554.7U CN202020779554U CN212467680U CN 212467680 U CN212467680 U CN 212467680U CN 202020779554 U CN202020779554 U CN 202020779554U CN 212467680 U CN212467680 U CN 212467680U
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Abstract
The utility model relates to an asphalt flue gas treatment system of an asphalt mixing plant, which comprises a shell, a condenser component, a first-stage active carbon adsorption component, a UV photolysis component, a second-stage active carbon adsorption component, a flue gas collecting pipeline and a fan, wherein the condenser component, the first-stage active carbon adsorption component, the UV photolysis component and the second-stage active carbon adsorption component are sequentially and hermetically communicated in the shell; the bottom of condenser subassembly is provided with connects the food tray, connect to be equipped with the oil extraction pipe on the food tray, the oil extraction pipe runs through the bottom of condenser subassembly. The utility model can be used for asphalt oil, and realizes resource recycling; most harmful components in the asphalt smoke are treated at a lower temperature, so that the discharged gas meets the environmental-friendly discharge standard, and the phenomenon that the smoke is burnt to generate overhigh temperature is avoided, and the service life of equipment is shortened.
Description
Technical Field
The utility model relates to a waste gas treatment technical field, concretely relates to asphalt mixing plant pitch flue gas processing system.
Background
With the increasing development of traffic roads, the requirements for paving asphalt mixture pavements are increasing continuously: the asphalt mixing plant is a complete set of equipment for producing asphalt mixture, and asphalt smoke is continuously generated when an asphalt tank is used for storing, heating and stirring and discharging materials in a main building; the asphalt smoke contains various organic substances such as benzopyrene, benzo-anthrax, carbazole, etc., and most are carcinogenic or carcinogenic substances, and has great harm to human: with the continuous improvement of the national requirements on environmental standards and the emergence of more strict acceptance standards, the asphalt smoke and dust in the production process of asphalt mixtures are reduced or reduced by adopting necessary technical means, and the asphalt smoke and dust can meet the atmospheric standards and health requirements. Traditional pitch flue gas treatment facility discharges again through burning, filtering the pitch flue gas, and exhaust waste gas temperature is high, and long-term high temperature causes the influence to subsequent filtration equipment life to pitch flue gas can not reuse, causes the wasting of resources.
SUMMERY OF THE UTILITY MODEL
The utility model provides an asphalt flue gas treatment system of an asphalt mixing plant, which can recycle asphalt oil and save resources, aiming at the technical problems in the prior art; the asphalt flue gas is decomposed and adsorbed at a lower temperature, so that most harmful components in the asphalt flue gas are effectively treated, the discharged gas meets the emission standard of environmental protection, and the phenomenon that the service life of equipment is shortened due to overhigh temperature generated by flue gas combustion is avoided.
The utility model provides an above-mentioned technical problem's technical scheme as follows:
an asphalt flue gas treatment system of an asphalt mixing plant comprises a shell, a condenser assembly, a first-stage active carbon adsorption assembly, a UV photolysis assembly, a second-stage active carbon adsorption assembly, a flue gas collecting pipeline and a fan, wherein the condenser assembly, the first-stage active carbon adsorption assembly, the UV photolysis assembly and the second-stage active carbon adsorption assembly are sequentially arranged in the shell in a closed communication manner; the bottom of condenser subassembly is provided with connects the food tray, connect to be equipped with the oil extraction pipe on the food tray, the oil extraction pipe runs through the bottom of condenser subassembly.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
Further, a chimney is arranged at the air outlet end of the fan and is vertically arranged, one end of the chimney is hermetically connected with the air outlet end of the fan, and the other end of the chimney is open.
Furthermore, the number of the flue gas collecting pipelines is at least two, one flue gas collecting pipeline is communicated with flue gas of a material receiving channel of a main building of the asphalt mixing plant, the other flue gas collecting pipeline is connected with an asphalt tank ventilation port of the asphalt mixing plant, and an air valve is arranged on the flue gas collecting pipeline which is connected with the asphalt tank ventilation port of the asphalt mixing plant.
Further, the flue gas collecting pipeline with still be equipped with the flue gas setting tank between the condenser subassembly, the bottom of flue gas setting tank is higher than connect the top of food tray, just the bottom of flue gas setting tank to connect the top slope of food tray.
Further, the condenser assembly comprises a water-cooled condenser arranged inside the shell, the water-cooled condenser comprises a connecting pipe and a plurality of condensate pipes arranged side by side, the condensate pipes are perpendicular to the flow direction of flue gas, and the adjacent condensate pipes are hermetically connected through the connecting pipe to form a water path; the water-cooled condenser is provided with a water inlet and a water outlet, and the water inlet and the water outlet penetrate through the shell.
Further, the condensate pipe is a finned pipe.
Furthermore, the water-cooled condensers are at least two groups, and the water-cooled condensers are sequentially arranged along the flow direction of the flue gas.
Furthermore, the first-stage active carbon adsorption component and the second-stage active carbon adsorption component respectively comprise a plurality of layers of active carbon filter screens transversely installed in parallel in the shell, and the adjacent active carbon filter screens are connected in a sealing manner through connecting plates; the air inlet ends and the air outlet ends of the first-stage activated carbon adsorption component and the second-stage activated carbon adsorption component are respectively communicated with two surfaces of the activated carbon filter screen.
Furthermore, UV photolysis subassembly is including setting up a plurality of UV fluorescent tubes in the casing, it is a plurality of the UV fluorescent tube is evenly arranged.
Further, the processing system further comprises a control unit, and the control unit is used for controlling the water path circulation of the condenser assembly, the on-off of the UV photolysis assembly and the operation of the fan respectively.
The utility model has the advantages that: the utility model discloses an asphalt flue gas treatment system, it can retrieve part of the asphalt oil in the asphalt flue gas through condensation, has realized resource cyclic utilization; the flue gas is decomposed by ultraviolet rays at a lower temperature, and the two processes of ultraviolet ray decomposition are carried out to adsorb active carbon, so that most harmful components in the asphalt flue gas can be treated, the discharged gas meets the emission standard of environmental protection, and the phenomenon that the flue gas is burnt to generate overhigh temperature is avoided, and the service life of equipment is shortened.
Drawings
FIG. 1 is a system structure diagram of the present invention;
FIG. 2 is a schematic structural view of a condenser assembly according to the present invention;
fig. 3 is a schematic structural view of the activated carbon adsorption assembly of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. the casing, 2, the flue gas collecting tube way, 201, the pneumatic valve, 3, the flue gas setting tank, 4, the condenser subassembly, 401, connect the food tray, 402, the oil drain pipe, 403, the water inlet, 404, the delivery port, 405, the oil drain valve, 406, the condensate pipe, 407, the connecting pipe, 5, first order active carbon adsorption component, 501, the active carbon filter screen, 502, the connecting plate, 6, UV photodissociation subassembly, 7, second order active carbon adsorption component, 8, the fan, 9, the chimney, 10, the induced air cover, 11, the frame.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
The asphalt flue gas treatment system for the asphalt mixing plant shown in fig. 1 comprises a shell 1, a condenser assembly 4, a first-stage activated carbon adsorption assembly 5, a UV photolysis assembly 6 and a second-stage activated carbon adsorption assembly 7 which are sequentially and hermetically communicated with one another in the shell 1, a flue gas collection pipeline 2 and a fan 8, wherein the gas outlet end of the flue gas collection pipeline 2 is communicated with the gas inlet end of the condenser assembly 4, and the gas inlet end of the fan 8 is connected with the gas outlet end of the second-stage activated carbon adsorption assembly 7; because the size difference between the air outlet end of the second-stage activated carbon adsorption component 7 and the air inlet end of the fan 8 is large, a closed induced draft cover 10 is arranged between the air outlet end of the second-stage activated carbon adsorption component 7 and the air inlet end of the fan 8 for transition. An oil receiving disc 401 is arranged at the bottom of the condenser assembly 4, an oil discharge pipe 402 is arranged on the oil receiving disc 401, and the oil discharge pipe 402 penetrates through the bottom of the condenser assembly 4. This setting is arranged in collecting the asphalt oil that drips after the condensation in the pitch flue gas to carry out recycle outside the discharge apparatus through oil extraction pipe 402, practiced thrift the resource. An oil discharge valve 405 is further disposed on the oil discharge pipe 402 for controlling the oil discharge pipe 402 to discharge the asphalt oil to the outside of the treatment system.
The fan 8 provides suction for the asphalt smoke collected by the smoke collecting pipeline 2 so as to guide the flow direction of the asphalt smoke; the asphalt flue gas is cooled by the condenser assembly 4, part of oily components in the gas are condensed and dropped into the oil receiving disc 401 at the bottom after the temperature is reduced, and the oily components are discharged through the oil discharge pipe 402 for recycling; the pitch flue gas after the cooling passes through first order active carbon adsorption subassembly 5, but the adsorbable most harmful gas, the remaining gas that can not be adsorbed passes through UV photolysis subassembly 6 again, UV photolysis subassembly 6 utilizes the ultraviolet ray decomposition principle, adopt the ultraviolet ray to come the oxidation of gas and the ray radiation combination processing flue gas, specifically, high energy ultraviolet ray beam shines organic waste gas, the molecular bond of quick schizolysis waste gas opens and changes its molecular structure in the twinkling of an eye, produce a series of photolysis fission reactions, make organic waste gas degrade and change into low molecular chemical, material such as carbon dioxide and hydrone. The main components of the gas after photolysis by the UV photolysis component 6 are carbon dioxide and water, and a small part of organic waste gas may be mixed. The gas after UV photodissociation is adsorbed again through second grade active carbon adsorption subassembly 7 again, basically can filter the organic waste gas that mixes in the gas and remove, and the exhaust emission standard of environmental protection can be reached to the gas of filteration again, discharges processing system through the suction of fan 8, accomplishes the processing procedure of pitch flue gas promptly.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
In this embodiment, the air outlet end of the fan 8 is provided with a chimney 9, the chimney 9 is vertically arranged, one end of the chimney 9 is hermetically connected with the air outlet end of the fan 8, and the other end of the chimney 9 is open. The chimney 9 increases the discharge height of the treated asphalt smoke, prevents the discharged gas from influencing the surrounding environment of the equipment, and ensures the stable flow of the gas.
In this embodiment, the number of the flue gas collecting pipes 2 is at least two, one flue gas collecting pipe 2 is communicated with flue gas of a material receiving channel of a main building of an asphalt mixing plant, the other flue gas collecting pipe 2 is connected with an asphalt tank ventilation port of the asphalt mixing plant, and a gas valve 201 is arranged on the flue gas collecting pipe 2 connected with the asphalt tank ventilation port of the asphalt mixing plant. Flue gas collecting pipe 2 mainly used collects the high temperature pitch flue gas that produces at the stirring in-process when asphalt mixing plant main building at ordinary times, when unloading to on-vehicle pitch jar, has the pitch flue gas along with the effusion of unloading, opens pneumatic valve 201 this moment, opens another flue gas collecting pipe 2, inhales the pitch flue gas of pitch jar ventilative mouthful through fan 8's suction the utility model discloses a pitch flue gas processing system purifies, prevents the environmental problem that the in-process of unloading caused. Meanwhile, the flue gas of the main building and the flue gas of the asphalt tank are integrated together for treatment, so that the cost is saved.
In this embodiment, as shown in fig. 1, a flue gas settling tank 3 is further disposed between the flue gas collecting pipe 2 and the condenser assembly 4, the bottom of the flue gas settling tank 3 is higher than the top of the oil receiving pan 401, and the bottom of the flue gas settling tank 3 is inclined toward the top of the oil receiving pan 401. The bottom of flue gas setting tank 3 is higher than and connects oil pan 401 and slope setting, can make the pitch oil that deposits 3 bottoms of flue gas setting tank flow to connect in the oil pan 401, the pitch oil recycle of being convenient for. After the high-temperature asphalt flue gas of the asphalt mixing plant enters the flue gas precipitation tank 3, part of solid matters and oil drops in the high-temperature asphalt flue gas are precipitated, so that the asphalt flue gas can be preliminarily purified; the lateral wall that is close to the inlet end on the flue gas setting tank 3 can set up to the inclined plane, and the lower part of inclined plane is towards condenser unit 4's direction, so set up to make solid matter and the oil droplet of sediment still remain after this lateral wall flows to the bottom of flue gas setting tank 3 towards the flow direction of connecing the oil pan 401 direction, do benefit to the collection of asphalt oil.
As shown in fig. 1-2, the condenser assembly 4 includes a water-cooled condenser disposed inside the housing 1, the water-cooled condenser includes a connecting pipe 407 and a plurality of condensate pipes 406 disposed side by side, the high-temperature flue gas passes through a gap between the condensate pipes 406 under the suction action of the fan 8, the condensate pipes 406 are disposed perpendicular to the flow direction of the flue gas, so that the condensate pipes 406 can better exchange heat with the high-temperature flue gas, and the adjacent condensate pipes 406 are hermetically connected through the connecting pipe 407 to form a water path; the water-cooled condenser is provided with a water inlet 403 and a water outlet 404, and the water inlet 403 and the water outlet 404 penetrate through the shell 1. The water-cooled condenser adopts a mode of downward inlet and upward outlet, a water inlet 403 is arranged at the lower part of the shell 1, and a water outlet 404 is arranged at the upper part of the shell 1, so that the heat exchange efficiency of high-temperature flue gas can be improved; the lower condensed water pipe 406 is lower in temperature than the upper condensed water pipe 406, so that condensed oil drops can drop downwards.
In this embodiment, the condensed water pipe 406 is a finned pipe. The finned tube is formed by arranging a plurality of annular metal fins on the outer wall of the water pipe so as to increase the contact area of the condensate pipe 406 and high-temperature flue gas and improve the heat exchange efficiency.
In this embodiment, water cooled condenser is two sets of at least, and is two sets of water cooled condenser arranges along the flue gas flow direction in proper order to the cooling effect of reinforcing high temperature flue gas.
As shown in fig. 3, each of the first-stage activated carbon adsorption assembly 5 and the second-stage activated carbon adsorption assembly 7 includes a plurality of activated carbon sieves 501 transversely installed in parallel in the housing 1, adjacent activated carbon sieves 501 are hermetically connected by a connecting plate 502, and the connecting plate 502 is fixedly installed on the housing 1; first order active carbon adsorption subassembly 5 and the inlet end of second level active carbon adsorption subassembly 7 with give vent to anger the end respectively with the two sides intercommunication of active carbon filter screen 501, under fan 8's suction effect, flow through first order active carbon adsorption subassembly 5 with the gas of second level active carbon adsorption subassembly 7 can only follow the one side flow direction another side of active carbon filter screen 501, and is specific, and the pitch flue gas can only be followed first order active carbon adsorption subassembly 5 and the inlet end flow direction of second level active carbon adsorption subassembly 7 is given vent to anger the end. The basic structures of the first-stage activated carbon adsorption component 5 and the second-stage activated carbon adsorption component 7 are the same, and the activated carbon filter screens 501 with different layers can be arranged according to actual needs. The activated carbon filter screen 501 may be of a drawing structure, and the housing 1 may be periodically opened to replace the activated carbon filter screen 501 or the activated carbon in the activated carbon filter screen 501 because the activated carbon is a consumable.
In this embodiment, the UV photolysis assembly 6 includes a plurality of UV lamps disposed in the housing 1, and the plurality of UV lamps are uniformly arranged. The number of the UV lamp tubes is set according to the sectional area of the shell 1 and the amount of the asphalt smoke passing through, so that the finally discharged gas reaches the environmental protection standard.
A water pump is further arranged in the waterway of the condenser assembly 4, and the water outlet 404 and/or the water inlet of the condenser assembly 4 are/is connected with the water pump, and the water pump is used for controlling the waterway circulation of the condenser assembly 4.
In this embodiment, processing system still includes the control unit, the water pump, the UV photodissociation subassembly 6, the fan 8 of condenser subassembly 4 are connected respectively to the control unit, are used for controlling respectively the water route circulation of condenser subassembly 4 the break-make of UV photodissociation subassembly 6 the fan 8 operation.
For the convenience of follow-up unpicking and washing and maintenance, casing 1 can set up to the sectional type, carries out sealing connection through connecting pieces such as flanges between the adjacent section casing 1, and each part subassembly corresponds one section casing 1, when dismantling an subassembly, dismantles the casing 1 that this subassembly corresponds and adjacent casing 1 between be connected, can take off this subassembly is whole. Still be equipped with the door on first order active carbon adsorption subassembly 5, UV photodissociation subassembly 6, the second level active carbon adsorption subassembly 7, can open the door and maintain it when not dismantling casing 1. The embodiment is further provided with a rack 11, the fan 8 and the shell 1 are installed on the rack 11, and the installation height of the fan 8 can be set according to the required height.
The working principle is as follows:
the fan 8 provides suction for the asphalt smoke collected by the smoke collecting pipeline 2 so as to guide the flow direction of the asphalt smoke; after the high-temperature asphalt flue gas of the asphalt mixing plant enters the flue gas precipitation tank 3, part of solid matters and oil drops in the high-temperature asphalt flue gas are precipitated, so that the asphalt flue gas can be preliminarily purified; then the asphalt flue gas is cooled by a condenser assembly 4, part of oily components in the gas are condensed and dropped into an oil receiving disc 401 at the bottom after the temperature is reduced, and the oily components are discharged through an oil discharge pipe 402 for recycling; the pitch flue gas after the cooling passes through first order active carbon adsorption subassembly 5, but the adsorbable most harmful gas, remaining unadsorbed gas passes through UV photolysis subassembly 6 again, UV photolysis subassembly 6 utilizes the ultraviolet ray decomposition principle, adopt the ultraviolet ray to arouse gaseous oxidation and light radiation combination processing flue gas, specifically, high energy ultraviolet ray beam shines organic waste gas, the molecular bond of quick schizolysis waste gas opens and changes its molecular structure in the twinkling of an eye, produce a series of photolysis fission reactions, make organic waste gas degrade and change into low molecular chemical, material such as carbon dioxide and hydrone. The main components of the gas after photolysis by the UV photolysis component 6 are carbon dioxide and water, and a small part of organic waste gas may be mixed. The gas after UV photodissociation is adsorbed again through second grade active carbon adsorption subassembly 7 again, basically can filter the organic waste gas that mixes in the gas and remove, and the exhaust emission standard of environmental protection can be reached to the gas of filteration again, discharges processing system through the suction of fan 8, accomplishes the processing procedure of pitch flue gas promptly.
The utility model discloses an asphalt flue gas treatment system, it can retrieve part of the asphalt oil in the asphalt flue gas through condensation, has realized resource cyclic utilization; the flue gas is decomposed by ultraviolet rays at a lower temperature, and the two processes before and after the ultraviolet ray decomposition are carried out with activated carbon adsorption, so that most harmful components in the asphalt flue gas can be treated, the discharged gas meets the emission standard of environmental protection, and the problem that the service life of equipment is shortened due to overhigh temperature caused by flue gas combustion in the traditional treatment mode is solved by the condensation step.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. The asphalt flue gas treatment system of the asphalt mixing plant is characterized by comprising a shell (1), a condenser assembly (4), a first-stage activated carbon adsorption assembly (5), a UV photolysis assembly (6) and a second-stage activated carbon adsorption assembly (7) which are sequentially and hermetically communicated in the shell (1), a flue gas collection pipeline (2) and a fan (8), wherein the gas outlet end of the flue gas collection pipeline (2) is communicated with the gas inlet end of the condenser assembly (4), and the gas inlet end of the fan (8) is connected with the gas outlet end of the second-stage activated carbon adsorption assembly (7); the bottom of condenser subassembly (4) is provided with connects oil pan (401), connect to be equipped with oil drain pipe (402) on oil pan (401), oil drain pipe (402) run through the bottom of condenser subassembly (4).
2. The asphalt flue gas treatment system for the asphalt mixing plant according to claim 1, wherein a chimney (9) is arranged at the air outlet end of the fan (8), the chimney (9) is vertically arranged, one end of the chimney (9) is hermetically connected with the air outlet end of the fan (8), and the other end of the chimney (9) is open.
3. The asphalt flue gas treatment system for the asphalt mixing plant according to claim 1, wherein the number of the flue gas collection pipes (2) is at least two, one flue gas collection pipe (2) is communicated with a material receiving channel of a main building of the asphalt mixing plant, the other flue gas collection pipe (2) is connected with an asphalt tank ventilation port of the asphalt mixing plant, and a gas valve (201) is arranged on the flue gas collection pipe (2) connected with the asphalt tank ventilation port of the asphalt mixing plant.
4. The asphalt flue gas treatment system for the asphalt mixing plant as defined in claim 1, wherein a flue gas settling tank (3) is further arranged between the flue gas collecting pipeline (2) and the condenser assembly (4), the bottom of the flue gas settling tank (3) is higher than the top of the oil receiving pan (401), and the bottom of the flue gas settling tank (3) is inclined towards the top of the oil receiving pan (401).
5. The asphalt flue gas treatment system of the asphalt mixing plant according to claim 1, wherein the condenser assembly (4) comprises a water-cooled condenser arranged inside the shell (1), the water-cooled condenser comprises a connecting pipe (407) and a plurality of condensed water pipes (406) arranged side by side, the condensed water pipes (406) are arranged perpendicular to the flow direction of the flue gas, and the adjacent condensed water pipes (406) are hermetically connected through the connecting pipe (407) to form a water path; the water-cooled condenser is provided with a water inlet (403) and a water outlet (404), and the water inlet (403) and the water outlet (404) penetrate through the shell (1).
6. The asphalt flue gas treatment system of the asphalt mixing plant as defined in claim 5, wherein the condensate pipe (406) is a finned pipe.
7. The asphalt flue gas treatment system for the asphalt mixing plant of claim 5, wherein the number of the water-cooled condensers is at least two, and the two water-cooled condensers are arranged in sequence along the flow direction of the flue gas.
8. The asphalt mixing station asphalt flue gas treatment system according to claim 1, wherein the first-stage activated carbon adsorption component (5) and the second-stage activated carbon adsorption component (7) respectively comprise a plurality of layers of activated carbon filter screens (501) which are transversely installed in parallel in the shell (1), and adjacent activated carbon filter screens (501) are hermetically connected through a connecting plate (502); the air inlet end and the air outlet end of the first-stage activated carbon adsorption component (5) and the second-stage activated carbon adsorption component (7) are respectively communicated with two surfaces of the activated carbon filter screen (501).
9. The asphalt flue gas treatment system for the asphalt mixing plant according to claim 1, wherein the UV photolysis component (6) comprises a plurality of UV light tubes arranged in the shell (1), and the plurality of UV light tubes are uniformly arranged.
10. The asphalt flue gas treatment system for the asphalt mixing plant according to claim 1, further comprising a control unit for controlling the water circuit circulation of the condenser assembly (4), the on/off of the UV photolysis assembly (6) and the operation of the fan (8), respectively.
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| CN202020779554.7U CN212467680U (en) | 2020-05-12 | 2020-05-12 | Asphalt flue gas treatment system of asphalt mixing plant |
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| CN202020779554.7U CN212467680U (en) | 2020-05-12 | 2020-05-12 | Asphalt flue gas treatment system of asphalt mixing plant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115006962A (en) * | 2022-06-15 | 2022-09-06 | 保利长大工程有限公司 | Flue gas treatment device and asphalt mixing plant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115006962A (en) * | 2022-06-15 | 2022-09-06 | 保利长大工程有限公司 | Flue gas treatment device and asphalt mixing plant |
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