CN214972515U - A waste gas recovery system for in feed production - Google Patents
A waste gas recovery system for in feed production Download PDFInfo
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- CN214972515U CN214972515U CN202120872509.0U CN202120872509U CN214972515U CN 214972515 U CN214972515 U CN 214972515U CN 202120872509 U CN202120872509 U CN 202120872509U CN 214972515 U CN214972515 U CN 214972515U
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Abstract
The utility model discloses a waste gas recovery system used in feed production, which comprises a cooler, a pulse dust collector, a heat exchanger, a draught fan and a working platform, wherein the pulse dust collector is arranged on the ground, the cooler and the heat exchanger are arranged at the upper end of the working platform, the draught fan is arranged at the lower end of the working platform, and the air outlet end of the draught fan corresponds to the lower part of the air inlet of the cooler; the air outlet of the cooler is connected to the air inlet of the pulse dust collector through a pipeline, the air outlet of the pulse dust collector is connected to the air inlet of the heat exchanger through a pipeline, the air outlet of the heat exchanger is connected to the air inlet of the induced draft fan, and all the air inlets and the air outlets are matched with the pipeline to form a circulating air path; an oxidation deodorization device or an adsorption deodorization device is arranged behind the exhaust port of the heat exchanger. The utility model is suitable for an among the waste gas recovery of feed production, can be with all tail gas cyclic utilization to thoroughly solve peculiar smell waste gas problem, and effectively realize the waste gas zero release.
Description
Technical Field
The utility model relates to a waste gas recovery environmental protection technology in feed production especially relates to and is used for feed production waste gas recovery system.
Background
The environmental protection situation faced by the domestic aquatic feed industry is very severe, the environmental protection treatment pressure is huge, and the industrial environmental protection problem can be further highlighted along with the further improvement of the emission standard of the malodorous pollutants. In the production and processing of the feed, the discharged waste gas has the characteristics of peculiar smell, high temperature, high humidity, high dust, large air volume and the like, wherein the drying, cooling and exhausting temperature is generally 65-75 ℃, the relative humidity is 55-70%, and the dust concentration is 30-50mg/Nm3The odor is over 5000 dimensionless, the air volume of a standard shrimp feed production line is about 3.5 ten thousand, and the air volume of a 10-ton puffing production line is about 8.5-10 ten thousand.
Currently, the waste gas treatment process generally adopted in the feed industry comprises:
firstly, a process of settling chamber, induced draft fan, ozone oxidation, spraying and sewage treatment is carried out;
secondly, performing 'primary spraying + microwave photo-oxidation + secondary spraying + sewage treatment';
and thirdly, a 'spraying + sewage treatment' or 'biological filter bed deodorization' process and the like.
Corresponding to the waste gas treatment process, the following technical scheme is specifically disclosed:
the publication date is 2019, 10 and 11, publication number is CN209476005U, and the name is "a feed production waste gas treatment device", wherein, the publication specifically discloses: including the dust removal case, the fixed trachea of being equipped with in bottom of dust removal case one side, the fixed dust filter bag that is equipped with the equidistant setting of a plurality of in one side of dust removal incasement portion, the fixed filtration cotton that is equipped with of opposite side of dust removal incasement portion, the bottom fixed connection of first Z venturi tube and photocatalysis case one side is passed through at the top of dust removal case opposite side, and the middle part of first Z venturi tube is equipped with deodorizing device. Collect the dust particle in with waste gas through straining the dirt bag, the dust is further clear away to the filtration cotton, and the adsorbable peculiar smell such as stink in the waste gas is clear away to the active carbon adsorption net, and in gaseous entering into the photocatalysis case, drop into the photocatalyst, combine ultraviolet lamp's irradiation, improve the reaction of photocatalysis, reduce the discharge of the harmful gas in the waste gas, spray aqueous solution through the shower nozzle, cool off waste gas, the gas after the cooling is discharged after gas water separator separates.
The publication date is 2019, 02, 15, publication number is CN 109329999a, and the name is "production line and production method of environmental protection and energy saving waste gas zero emission special aquatic feed", wherein the patent documents specifically disclose: the production line comprises a coarse crushing unit, an ultra-fine crushing unit, a pre-conditioning unit, a granulating unit, a post-curing unit, a drying unit and a cooling unit which are sequentially arranged along the production process, wherein A-type environment-friendly energy-saving waste gas zero-emission devices are arranged on the coarse crushing unit, the ultra-fine crushing unit, the pre-conditioning unit, the granulating unit, the post-curing unit and the cooling unit; the A-type environment-friendly energy-saving waste gas zero-emission device comprises a dust remover connected to waste gas discharge ports of all units, an air volume distribution valve connected to the dust remover, and an A-type heat recovery device connected to a main path of the air volume distribution valve, wherein one side of the A-type heat recovery device is connected with a three-way outlet, one end of the three-way outlet is communicated with an air inlet of each unit, and a bypass of the air volume distribution valve is connected with the other end of the three-way outlet. The invention can recycle the waste gas after treatment, and realizes zero emission of the waste gas.
The publication date is 12 and 15 in 2017, publication number is CN107469619A, and the name is Chinese invention patent document of 'a concentrated feed waste gas treatment device', wherein the Chinese invention patent document specifically discloses: including the discharge pipe that sets gradually, the air-supply line, purifier, go out tuber pipe and gas vent, be provided with booster fan and process chamber on the play tuber pipe, booster fan is located the upper level of process chamber, the process chamber discharge gate branch is equipped with solid-state thing export and gaseous state thing export, the garbage collection groove is connected to the below of solid-state thing export, gaseous state thing exit linkage dust remover, the exit linkage of dust remover is on the play tuber pipe of process chamber lower level, be provided with catalytic unit in the purifier, purifier's side sets up spouts the fluid reservoir, spout the mouth of spraying of fluid reservoir including connect in the terminal first mouth that sprays of air-supply line and connect in the second that goes out the tuber pipe front end and spray the mouth, it is first, the second sprays and sets up pressure sensors on the mouth, pressure sensors's sensing signal conduction is to the controller that spouts the fluid reservoir, the controller control is first, the second sprays opening and close and the aperture of mouth.
The publication date is 2019, 05 and 24, publication number is CN208893832U, and the name is "a deodorization and purification device for feed processing waste gas", wherein, the publication specifically discloses: comprises a bottom plate seat, a carrying frame, an induced draft fan and a purifying box body are arranged at the top of the bottom plate seat, a filtering chamber and a cooling chamber are divided in the inner cavity of the purifying box body, deodorization room and collecting chamber, the inner chamber of filter chamber is provided with the dust-collecting box, the bottom of deodorization room is provided with vapour and liquid separator, the top of deodorization room is provided with the ultraviolet irradiation lamp, the inherent condensate tank in inner chamber left side of cooling chamber, the circumference outer wall of condensate tank coils has the condenser pipe, it has the filter screen to peg graft in the top left side of purifying box, the top right side of purifying box is provided with the outlet pipe, the right side of purifying box is provided with the inlet tube, gas vent and drain pipe, the right side of gas vent is provided with the fan of airing exhaust, the left side of draught fan is connected with flexible hose, flexible hose's left side is connected with the suction hood, the utility model has the advantages of reasonable design, amine waste gas and fodder dust in the air are discharged in the reduction, the pollution to the environment is reduced.
The main flow treatment process disclosed can be seen that the dust removal photocatalysis deodorization is adopted for emission, or a dust remover is singly adopted, or the dust remover is sprayed with the light oxygen catalysis for emission, the treatment modes are basically simple for recovery, a systematic recovery route is not formed in the whole production process, and the treatment modes are pure terminal treatment. The existing treatment process has no good unified recycling, does not form effective combination with the production process, and has high cost, high cost and low stability, and the emission requirement can not be met under severe weather conditions. Therefore, the original tail end treatment thought needs to be changed, so that the waste gas treatment and the feed production process are organically linked, and the problem of waste gas emission is thoroughly solved.
Disclosure of Invention
The utility model aims at overcoming the defects of the prior art and providing the waste gas recovery system used in the feed production. In the technical scheme, the process of waste gas recycling and zero emission is provided, the process is controlled from a production source and a production process, waste gas generated in the production and processing process is cooled, dusted and dehumidified and then recycled to each production section, namely tail gas in the production process is recycled, so that the problem of peculiar smell and waste gas is thoroughly solved, and the zero emission of the waste gas is effectively realized.
In order to achieve the technical purpose, the following technical scheme is proposed:
the waste gas recovery system for the feed production comprises a cooler, a pulse dust collector, a heat exchanger, an induced draft fan and a working platform, wherein the pulse dust collector is arranged on the ground; an air outlet at the upper end of the cooler is connected to an air inlet of the pulse dust collector through a pipeline, an air outlet of the pulse dust collector is connected to an air inlet of the heat exchanger through a pipeline, an air outlet of the heat exchanger is connected to an air inlet of the induced draft fan, and all the air inlets and the air outlets, the air inlet and the air outlet are matched with the pipeline to form a circulating air path; a pipeline connected behind an exhaust port of the heat exchanger is provided with a deodorization device, and the deodorization device adopts oxidation deodorization equipment or an adsorption deodorization device; wherein, the oxidation deodorization equipment can be low temperature plasma equipment or low temperature plasma light oxygen deodorization composite equipment, and the adsorption deodorization device is mainly an activated carbon adsorption box.
The air inlet end of the cooler and the air outlet end of the draught fan are provided with a pressure equalizing and reducing box, the pressure equalizing and reducing box comprises an upper box body and a lower box body, the positions of the upper box body and the lower box body correspond to each other, the upper box body is installed above the working platform, and the lower box body is installed below the working platform.
Aiming at the uniform pressure reduction speed box:
furthermore, the upper box body covers the cooler and the corresponding partial pipeline above the working platform, and the lower box body covers the induced draft fan and the corresponding partial pipeline. Or the upper box body only covers the air inlet and the lower part of the cooler, the upper half part of the cooler and the corresponding pipeline are both positioned outside the upper box body, and the lower box body covers the induced draft fan and the corresponding pipeline. In the two design structures, the air inlet route of the cooler, the induced draft fan and the air inlet pipe section of the return air wind path are all located in the uniform pressure reduction box, a pressure equalizing system of return air can be formed in the box body, and the air speed and the air pressure of waste gas can be effectively reduced and the air quantity and the air pressure of the system can be balanced.
Furthermore, two symmetrical side faces of the pressure equalizing and reducing box are provided with shutters, so that air volume and air pressure in the air box can be balanced. The shutter comprises an upper half part and a lower half part which correspond to each other in position, the upper half part is positioned on the lower portion of the side wall of the upper box, the lower half part is positioned on the upper portion of the side wall of the lower box, the shutters of the upper part and the lower part can be controlled respectively, and the pressure difference of corresponding areas is adjusted.
Furthermore, the material of the pressure equalizing and reducing box can be one of stainless steel, carbon steel, rock wool plates and color steel plates. When the pressure equalizing and reducing box is made of carbon steel, the whole inner wall surface is provided with an anticorrosive coating.
The pulse dust collector is a cloth bag pulse dust collector, an anti-corrosion coating is arranged on the inner surface of a shell of the pulse dust collector, a heat preservation layer is arranged on the outer surface of the shell, the heat preservation layer can be specifically formed by heat preservation materials such as heat preservation cotton and polyurethane, a cloth bag of the pulse dust collector adopts a water-repellent and oil-proof filter material, such as a polytetrafluoroethylene filter bag, a PTFE (polytetrafluoroethylene) coated filter bag and an infiltrated polytetrafluoroethylene emulsion filter bag, and the treatment capacity of the cloth bag is 1.2-3.5 (m is3/（m2*min））。
The heat exchanger is a gas-liquid heat exchanger, the gas-liquid heat exchanger comprises a shell and a heat exchange finned tube, the heat exchange finned tube is arranged in the shell, an air inlet and an air outlet are formed in two ends of the shell respectively, a cooling water inlet pipeline is arranged at the upper end of the shell, and a condensed sewage pipeline is arranged at the bottom end of the shell; and non-stick coatings are arranged on the outer surface of the heat exchange finned tube and the inner surface of the shell.
A sewage collecting box is arranged at the water outlet of a condensed sewage pipeline of the heat exchanger, the sewage collecting box is provided with a sewage pump and a water meter, and condensed sewage formed by heat exchange is collected into the sewage collecting box and then conveyed to a sewage station for centralized treatment; and the cooling water inlet pipeline is connected with a refrigerating system.
And ash removing hoppers can be arranged on the horizontal section of the circulating air path, if the length of the horizontal pipe section is more than or equal to 3 meters, one ash removing hopper is arranged every 3 meters, and if the length of the horizontal pipe section is less than 3 meters, one ash removing hopper is arranged.
The induced draft fan adopts a centrifugal fan, and the air volume is 9000-25000 m3The wind pressure is 1700-3800 Pa. Waste gas after the heat exchanger is treated can be introduced into the cooler through the induced draft fan, and smooth and stable return air entering into the cooler is guaranteed.
The waste gas recovery system is also provided with a plurality of safety detection devices, which are as follows:
furthermore, a plurality of temperature and humidity sensors are arranged at the air inlet end of the cooler.
Furthermore, a pressure sensor I and an alarm are arranged on the shell of the pulse dust collector, so that the pressure and pressure difference conditions can be monitored in real time, the pressure can be adjusted timely, and the stability, controllability and safety of a dust collection process can be guaranteed.
Furthermore, a temperature and humidity sensor I and a dust sensor I are arranged on a pipeline of an air inlet end of the pulse dust collector and used for detecting the temperature and humidity and the dust concentration of waste gas at the air inlet end of the pulse dust collector, and the pulse dust collector can be adaptively regulated and controlled in advance.
Furthermore, the air outlet end of the heat exchanger is provided with a dust sensor II and a temperature and humidity sensor II, so that the dust removal effect and the pressure difference condition are monitored in real time, and the dust removal effect and the pressure difference condition are fed back in time when a fault occurs.
Furthermore, a pressure sensor II is arranged on the inner wall of the pressure equalizing and reducing box, so that the pressure difference condition of the circulating air path is monitored in real time, and the pressure is adjusted timely.
The utility model has the advantages as follows:
the utility model discloses specially adapted water fodder production system's waste gas recovery handles, not only is limited to the waste gas recovery cyclic utilization of cooler, still can be used to handle the waste gas that produces in the processes such as coming from coarse crushing, superfine grinding, bulking and/or pelletization, with the tail gas cyclic utilization in the production technology to thoroughly solve peculiar smell waste gas problem, and effectively realize the waste gas zero release, realize "waste gas recovery recycles, the technology of zero release".
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is another schematic structural diagram of the present invention.
In the figure, 1-cooler; 2-working platform, 3-exhaust pipeline of cooler; 4-the return air line of the cooler; 5-a draught fan; 6-a shutter; 7-equalizing pressure drop speed case; 8-pressure sensor II; 9-air inlet of cooler; 10-a temperature sensor; 11-a deodorizing device; 12-a heat exchanger; 13-a sewage collection box; 14-a pulse dust collector; 15-ash removal bucket, 16-cooling water inlet pipeline, 17-condensed sewage pipeline, 18-sewage pump and 19-water meter; 20-a dust sensor I; 21-temperature and humidity sensor I, 22-dust sensor II, 23-temperature and humidity sensor II.
Detailed Description
In the following, the technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Example 1
As shown in fig. 1-2, the description is given solely in terms of the cooler exhaust gas recovery cycle.
A waste gas recovery system in feed production comprises a cooler 1, a pulse dust collector 14, a heat exchanger 12, an induced draft fan 5 and a working platform 2, wherein the pulse dust collector 14 is arranged on the ground, the cooler 1 and the heat exchanger 12 are arranged at the upper end of the working platform 2, the induced draft fan 5 is arranged at the lower end of the working platform 2, and the air outlet end of the induced draft fan 5 corresponds to the lower part of an air inlet 9 of the cooler 1; an air outlet at the upper end of the cooler 1 is connected to an air inlet of the pulse dust collector 14 through a pipeline, an air outlet of the pulse dust collector 14 is connected to an air inlet of the heat exchanger 12 through a pipeline, an air outlet of the heat exchanger 12 is connected to an air inlet of the induced draft fan 5, and a circulation air path is formed by matching pipelines of all air inlets and air outlets, the air inlets and the air outlets in the exhaust pipeline 3 of the cooler and the return air pipeline 4 of the cooler; and a deodorization device 11 is arranged on a pipeline connected behind an exhaust port of the heat exchanger 12.
Further, the deodorization device 11 may be an oxidation deodorization apparatus or an adsorption deodorization device. Wherein:
if the oxidation deodorization equipment is adopted, the equipment can be low-temperature plasma equipment or low-temperature plasma photo-oxidation deodorization composite equipment.
If the deodorization device is adsorbed, the deodorization device is mainly an activated carbon adsorption box.
Example 2
Based on embodiment 1, 9 ends of the air inlet of the cooler 1 and the air outlet end of the draught fan 5 are provided with the pressure equalizing and reducing box 7, the pressure equalizing and reducing box 7 comprises an upper box body and a lower box body which correspond to each other in position, the upper box body is installed above the working platform 2, and the lower box body is installed below the working platform 2.
For the pressure equalizing and reducing speed box 7: the upper box body coats the cooler 1 and the corresponding partial pipelines above the working platform 2, and the lower box body coats the induced draft fan 5 and the corresponding partial pipelines. Or, the upper box body only covers the air inlet 9 and the lower part of the cooler 1, the upper half part of the cooler 1 and the corresponding pipeline are both positioned outside the upper box body, and the lower box body covers the induced draft fan 5 and the corresponding pipeline.
In the two design structures, the air inlet route of the cooler 1, the induced draft fan 5 and the air inlet pipe section of the return air passage are all positioned in the uniform pressure reduction box 7, a pressure equalizing system of return air can be formed in the box body, and the air speed and the pressure of waste gas can be effectively reduced, and the air quantity and the air pressure of the system can be balanced.
Furthermore, two symmetrical side faces of the pressure equalizing and reducing box 7 are provided with shutters 6, so that the air volume and the air pressure in the air box can be balanced. The louver 6 comprises an upper half part and a lower half part which correspond to each other in position, the upper half part is positioned on the lower portion of the side wall of the upper box, the lower half part is positioned on the upper portion of the side wall of the lower box, the upper and lower louver 6 can be controlled respectively, and the pressure difference of corresponding areas can be adjusted.
Furthermore, the material of the pressure equalizing and reducing box 7 can be one of stainless steel, carbon steel, rock wool board and color steel board. When the pressure equalizing and reducing box 7 is made of carbon steel, the whole inner wall surface is provided with an anticorrosive coating.
Example 3
Based on embodiment 1 or 2, further, the pulse dust collector 14 is a cloth bag pulse dust collector 14, an anticorrosive coating is arranged on the inner surface of a shell of the pulse dust collector 14, a heat-insulating layer is arranged on the outer surface of the shell, the heat-insulating layer can be specifically formed by heat-insulating materials such as heat-insulating cotton and polyurethane, a cloth bag of the pulse dust collector 14 is made of a water-repellent and oil-proof filter material, such as a polytetrafluoroethylene filter bag, a PTFE (polytetrafluoroethylene) coated filter bag and an infiltrated polytetrafluoroethylene emulsion filter bag, and the treatment capacity of the cloth bag is 1.2-3.5 (m is3/（m2*min））。
Example 4
Based on any structure of embodiments 1-3, further, the heat exchanger 12 is a gas-liquid heat exchanger, the gas-liquid heat exchanger includes a shell and a heat exchange finned tube, the heat exchange finned tube is arranged inside the shell, the two ends of the shell are respectively a gas inlet and a gas outlet, the upper end of the shell is provided with a cooling water inlet pipeline 16, and the bottom end of the shell is provided with a condensed sewage pipeline 17; and non-stick coatings are arranged on the outer surface of the heat exchange finned tube and the inner surface of the shell.
A sewage collecting tank 13 is arranged at a water outlet of a condensed sewage pipeline 17 of the heat exchanger 12, the sewage collecting tank 13 is provided with a sewage pump 18 and a water meter 19, and condensed sewage formed by heat exchange is collected in the sewage collecting tank 13 and then conveyed to a sewage station for centralized treatment; the cooling water inlet pipeline 16 is connected with a refrigerating system. Such as: the screw water-cooling unit and the refrigerating system are connected with a cooling tower, and a water pump is arranged on a cooling circulating pipe.
Example 5
Based on any structure of embodiments 1-4, in this embodiment, further, an ash removing bucket 15 may be disposed on the horizontal pipe of the circulation air path, if the length of the horizontal pipe is greater than or equal to 3 meters, an ash removing bucket 15 is disposed every 3 meters, and if the length of the horizontal pipe is less than 3 meters, an ash removing bucket 15 is disposed.
Example 6
Based on any structure of embodiments 1-5, in this embodiment, further, the induced draft fan 5 adopts a centrifugal fan, and the air volume is 9000-25000 m3The wind pressure is 1700-3800 Pa. The waste gas treated by the heat exchanger 12 can be introduced into the cooler 1 through the induced draft fan 5, so that the smooth and stable return air can be ensured to enter the cooler 1.
Example 7
Based on any structure of embodiments 1 to 6, this embodiment further provides a plurality of safety detection devices for the exhaust gas recovery system, specifically as follows:
further, a plurality of temperature and humidity sensors are arranged at the air inlet end of the cooler 1.
Furthermore, a pressure sensor I and an alarm are arranged on the shell of the pulse dust collector 14, so that the pressure and the pressure difference can be monitored in real time, the pressure can be adjusted in time, and the stability, controllability and safety of a dust collection process can be guaranteed.
Furthermore, a temperature and humidity sensor I21 and a dust sensor I20 are arranged on a pipeline at the air inlet end of the pulse dust collector 14 and used for detecting the temperature and humidity and the dust concentration of the waste gas at the air inlet end of the pulse dust collector 14, and the pulse dust collector 14 can be adaptively regulated and controlled in advance.
Furthermore, a dust sensor II 22 and a temperature and humidity sensor II 23 are arranged at the air outlet end of the heat exchanger 12, so that the dust removal effect and the pressure difference condition are monitored in real time, and the dust removal effect and the pressure difference condition are fed back in time when a fault occurs.
Furthermore, the inner wall of the pressure equalizing and reducing box 7 is provided with a pressure sensor II (8) for monitoring the pressure difference condition of the circulating air path in real time so as to adjust the pressure in due time.
Through the above-mentioned embodiment, can see that, the utility model discloses can be used to aquatic products feed production system, as whole aquatic products feed production system's waste gas recovery processing use, the flow that specifically uses is:
firstly, waste gas generated in a feed production system is treated by a dust remover with water and oil repellent functions. The dust remover replaces the original common bag dust remover and the original cyclone dust remover, the dust removing efficiency is higher, the equipment operation is more stable, and the possibility of powder leakage does not exist basically. In the process of dust removal, peculiar smell and wind dust adhered to the dust are intercepted smoothly and can be used as raw materials for feed production again, and the concentration of the peculiar smell can be reduced by 40-50% in the process;
secondly, the moisture carried in the waste gas is removed through the waste gas after dust removal and the cooling and dehumidifying process of the heat exchanger 12, wherein the water is also an important transmission carrier of the peculiar smell substances, the peculiar smell substances can be transferred into the condensed sewage through dehydration and then enter a sewage station for treatment, and the concentration of the peculiar smell can be reduced by 30-40% in the process. The concentration of the peculiar smell can be reduced by 70-90% through the procedures, and the residual peculiar smell components which are not removed enter the feed product to be used as a phagostimulant to increase the food calling effect of animals, fishes, shrimps and the like.
Finally, in order to reduce the influence of the residual peculiar smell components on the workshop environment, an oxidation deodorization device or an adsorption deodorization device can be arranged behind the heat exchanger 12.
In the recovery system, the waste gas circulates in the closed system and is not discharged to the outside, so the problems of peculiar smell disturbing residents and the like are not generated.
Claims (10)
1. A waste gas recovery system for feed production, including cooler (1), pulse dust collector (14), heat exchanger (12), draught fan (5) and work platform (2), pulse dust collector (14) are arranged in ground, cooler (1) and heat exchanger (12) are arranged in work platform (2) upper end, draught fan (5) are arranged in work platform (2) lower extreme, the air-out end of draught fan (5) corresponds the air intake (9) below of cooler (1); an air outlet at the upper end of the cooler (1) is connected to an air inlet of the pulse dust collector (14) through a pipeline, an air outlet of the pulse dust collector (14) is connected to an air inlet of the heat exchanger (12) through a pipeline, an air outlet of the heat exchanger (12) is connected to an air inlet of the induced draft fan (5), and all the air inlets and the air outlets, and the air inlet and the air outlet are matched with the pipeline to form a circulating air path; and a deodorization device (11) is arranged on a pipeline connected behind an exhaust port of the heat exchanger (12), and the deodorization device (11) adopts oxidation deodorization equipment or an adsorption deodorization device.
2. An exhaust gas recovery system for use in feed production according to claim 1, wherein: an air inlet end of the cooler (1) and an air outlet end of the induced draft fan (5) are provided with a pressure equalizing and reducing box (7), the pressure equalizing and reducing box (7) comprises an upper box body and a lower box body which correspond to each other in position, the upper box body is arranged above the working platform (2), and the lower box body is arranged below the working platform (2);
the upper box body covers the cooler (1) and the corresponding part of pipelines above the working platform (2), and the lower box body covers the induced draft fan (5) and the corresponding part of pipelines; or the upper box body only covers the air inlet (9) and the lower part of the cooler (1), the upper half part of the cooler (1) and the corresponding pipeline are both positioned outside the upper box body, and the lower box body covers the induced draft fan (5) and the corresponding pipeline.
3. An exhaust gas recovery system for use in feed production according to claim 1, wherein: two symmetrical sides of the pressure equalizing and reducing box (7) are provided with shutters (6), each shutter (6) comprises an upper half part and a lower half part, the upper half part is located on the lower portion of the side wall of the upper box, and the lower half part is located on the upper portion of the side wall of the lower box.
4. An exhaust gas recovery system for use in feed production according to claim 1, wherein: the material of the pressure equalizing and reducing box (7) is one of stainless steel, carbon steel, rock wool plates and color steel plates.
5. An exhaust gas recovery system for use in feed production according to claim 1, wherein: the pulse dust collector (14) is a cloth bag pulse dust collector (14), an anticorrosive coating is arranged on the inner surface of the shell of the pulse dust collector (14), and an insulating layer is arranged on the outer surface of the shell; the cloth bag of the pulse dust collector (14) adopts water-repellent and oil-repellent typeThe processing capacity of the filter material and the cloth bag is 1.2-3.5 (m)3/（m2*min））。
6. An exhaust gas recovery system for use in feed production according to claim 1, wherein: the heat exchanger (12) is a gas-liquid heat exchanger, the gas-liquid heat exchanger comprises a shell and a heat exchange finned tube, the heat exchange finned tube is arranged inside the shell, the two ends of the shell are respectively provided with a gas inlet and a gas outlet, the upper end of the shell is provided with a cooling water inlet pipeline (16), and the bottom end of the shell is provided with a condensed sewage pipeline (18); a sewage collecting tank (13) is arranged at the water outlet of the condensed sewage pipeline (18), and the sewage collecting tank (13) is provided with a sewage pump (18) and a water meter (19); the cooling water inlet pipeline (16) is connected with a refrigerating system; and non-stick coatings are arranged on the outer surface of the heat exchange finned tube and the inner surface of the shell.
7. An exhaust gas recovery system for use in feed production according to claim 1, wherein: at least one ash removing hopper (15) is arranged on the horizontal section pipeline of the circulating air path.
8. An exhaust gas recovery system for use in feed production according to claim 1, wherein: the oxidation deodorization equipment is low-temperature plasma equipment or low-temperature plasma photo-oxidation deodorization composite equipment; the adsorption deodorization device is an activated carbon adsorption box.
9. An exhaust gas recovery system for use in feed production according to claim 1, wherein: the induced draft fan (5) adopts a centrifugal fan, and the air volume is 9000-25000 m3The wind pressure is 1700-3800 Pa.
10. Waste gas recovery system for use in feed production according to claim 1, characterized in that several safety check devices are provided, in particular: the air inlet end of the cooler (1) is provided with a plurality of temperature and humidity sensors; a pressure sensor I and an alarm are arranged on the shell of the pulse dust collector (14); a temperature and humidity sensor I (21) and a dust sensor I (20) are arranged on a pipeline at the air inlet end of the pulse dust collector (14); a dust sensor II (22) and a temperature and humidity sensor II (23) are arranged at the air outlet end of the heat exchanger (12); and a pressure sensor II (8) is arranged on the inner wall of the pressure equalizing and reducing speed box (7).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120872509.0U CN214972515U (en) | 2021-04-26 | 2021-04-26 | A waste gas recovery system for in feed production |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120872509.0U CN214972515U (en) | 2021-04-26 | 2021-04-26 | A waste gas recovery system for in feed production |
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| Publication Number | Publication Date |
|---|---|
| CN214972515U true CN214972515U (en) | 2021-12-03 |
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| CN202120872509.0U Active CN214972515U (en) | 2021-04-26 | 2021-04-26 | A waste gas recovery system for in feed production |
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| Country | Link |
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| CN (1) | CN214972515U (en) |
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2021
- 2021-04-26 CN CN202120872509.0U patent/CN214972515U/en active Active
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Effective date of registration: 20231109 Address after: No. 588, Middle Tianfu Avenue, Chengdu Hi tech Zone, China (Sichuan) Pilot Free Trade Zone, 610000, Sichuan Patentee after: Tongwei Agricultural Development Co.,Ltd. Address before: No. 588, middle section of Tianfu Avenue, high tech Zone, Chengdu, Sichuan 610000 Patentee before: TONGWEI Co.,Ltd. |
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