CN112973354A - Electrostatic oil removal purifier and waste gas treatment combined device and process for livestock and poultry died of diseases - Google Patents
Electrostatic oil removal purifier and waste gas treatment combined device and process for livestock and poultry died of diseases Download PDFInfo
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Abstract
The invention discloses a livestock and poultry waste gas treatment combined device and a process thereof, wherein the livestock and poultry waste gas treatment combined device comprises an electrostatic oil removal purifier, a primary spray tower, a secondary spray tower, a biological filter, a photocatalyst, an activated carbon absorber, an induced draft fan, a chimney and a tertiary spray tower; the combined treatment process solves the problems of waste gas oil removal, temperature reduction, dust removal, VOCs removal, odor removal and the like, and has the advantages of high waste gas purification efficiency, good deodorization effect, strong impact resistance, stable operation, simple and convenient operation and maintenance, moderate primary investment, low operating cost, no increase of secondary pollution, compact equipment, small occupied area and low energy consumption. Can stably run for a long time and reach the relevant national emission standard. In addition, the process can simplify the process sections according to the requirements of projects, such as electrostatic oil removal, chemical washing absorption, water absorption, microorganisms, photocatalysis and activated carbon adsorption, and then combine the process sections into an integrated device, so that the purification efficiency is ensured, and the integrated device has the advantages of more stable operation, less energy consumption, lower investment, compact equipment, small occupied area and the like.
Description
Technical Field
The invention relates to the field of waste gas treatment of livestock and poultry died of diseases, in particular to an electrostatic oil removal purifier, a waste gas treatment combined device for livestock and poultry died of diseases and a process thereof.
Background
At present, for the odorous waste gas generated by the livestock and poultry waste transfer station died of diseases, the treatment technology is in a research and discussion stage, and the treatment method mainly treats the waste gas through electrostatic oil removal, single spraying, activated carbon and microbial processes; each treatment process has its drawbacks, making the deodorizing effect unstable and not ideal. In the electrostatic oil removal technology in the prior art, extremely high alternating voltage transformation is applied, so that corona discharge is formed on the inner surfaces of the intermediate electrode and the conductive shell, and the purpose of electrostatic oil removal is achieved while great potential safety hazard of arc discharge exists. In addition, the objects which are filtered in the spraying process of the spraying tower are difficult to remove, so that the water flow which is sprayed subsequently is blocked, and a continuous circulating state is difficult to form.
Disclosure of Invention
Aiming at the problems in the related art, the invention provides an electrostatic oil removal purifier, a waste gas treatment combined device for livestock and poultry died of diseases and a process thereof, so as to overcome the technical problems in the prior related art.
The technical scheme of the invention is realized as follows:
a livestock and poultry waste gas treatment combined device died of diseases comprises an electrostatic oil removal purifier, a primary spray tower, a secondary spray tower, a biological filter, a photocatalyst, an activated carbon absorber, an induced draft fan, a chimney and a tertiary spray tower;
the electrostatic oil removal purifier is connected to a first-stage spray tower, the first-stage spray tower is connected to a second-stage spray tower, the second-stage spray tower is connected to one end of a biological filter, the other end of the biological filter is connected to a photocatalyst, the other end of the photocatalyst is connected to an inlet of a third-stage spray tower, and an outlet of the third-stage spray tower is connected to a chimney through an activated carbon adsorber and an induced draft fan.
The electrostatic oil removal purifier comprises an inner shell, an outer shell, an air inlet pipe, a screen structure, an air outlet pipe, an oil discharge pipe, an air flow pump for providing positive and negative pressure, a free radical sensor, a mesh blockage sensor and a control circuit, wherein the screen structure is formed by weaving a plurality of first insulated conductors in parallel directions and a plurality of second insulated conductors in vertical directions, the plurality of first insulated conductors in parallel directions and the plurality of insulated conductors in vertical directions limit a plurality of meshes, a third insulated conductor sequentially penetrates through each mesh, and the first, second and third insulated conductors are configured to a three-phase AC voltage source, so that an electric field is generated among the first, second and third insulated conductors; the electric field can attract oily particles in the air flow to at least one insulating surface of the three insulating conductors, so that oil drops are formed and discharged through the oil discharge pipe; the cleaned airflow flows into the first-stage spray tower through the air outlet pipe.
Further, the structure of one-level spray tower, second grade spray tower and tertiary spray tower is the same, the one-level spray tower includes the tower body, circulating water tank, add medicine mechanism, spray the mechanism, negative pressure mechanism and clearance mechanism, circulating water tank is located the bottom of tower body, clearance mechanism is located circulating water tank's inside, negative pressure mechanism is located the top of tower body, spray mechanism one end and meet with circulating water tank, the other end that sprays the mechanism is worn out the tower body and is met with medicine mechanism, and spray the mechanism and insert the tower body top again, be located negative pressure mechanism's below, the side import that the top export of one-level spray tower passes through the pipeline and inserts the second grade spray tower.
Further, the negative pressure mechanism comprises a lantern ring, fan blades and a support column, the lantern ring is fixed on the inner wall of the tower body, the support column transversely penetrates through the lantern ring, the fan blades with power drive are installed in the middle of the support column, the fan blades rotate under the power drive, and the livestock and poultry waste gas died of diseases is discharged into the secondary spray tower under the action of negative pressure;
the circulating water tank comprises an expansion part, a water storage container and a filter screen, the top surface of the water storage container is connected with the expansion part, the filter screen is arranged at the joint of the expansion part and the water storage container, two symmetrical ends of the expansion part penetrate out of the tower body and are respectively connected with the spraying mechanism and the rotating motor, the expansion part rotates around the spraying mechanism and the rotating motor, and a cleaning mechanism is arranged on the expansion part above the filter screen;
the cleaning mechanism comprises a motor, a brush and a bearing seat, the bearing seat is fixed on the top surface of the filter screen, a rotating shaft of the motor penetrates through the bearing seat to be connected with the brush, the bottom surface of the brush is contacted with the filter screen, the rotating motor rotates to a position below the filter screen, and the motor drives the brush to rotate so as to clean impurities accumulated on the surface of the filter screen;
the spraying mechanism comprises a switching cylinder, a main pipe, a discharge pipe, a spraying circulating pump, a spray pipe and an atomizing head, the switching cylinder is fixed on the outer wall of the tower body, one end of each of the main pipe and the discharge pipe is inserted into the switching cylinder, the other end of the main pipe is connected with an expanding part above the filter screen, the discharge pipe is connected onto the spraying circulating pump, the output end of the spraying circulating pump is connected with the spray pipe, the spray pipe is inserted into the tower body and is connected with the atomizing head, and liquid in the water storage vessel drawn by the spraying circulating pump is atomized and.
Further, the dosing mechanism comprises a servo motor, a medicine box, a dosing pipe, a sealing disc, a cross rod, a main shaft and a sealing barrel, wherein one end of the main shaft is fixed on the servo motor, the other end of the main shaft is inserted into the cross rod, and the cross rod slides in the main shaft;
the horizontal pole inserts sealed section of thick bamboo and meets with sealed dish, sealed dish and sealed dish threaded connection, and sealed top of a section of thick bamboo is through adding pencil and discharge pipe intercommunication, and sealed section of thick bamboo is fixed on the medical kit to the medical kit communicates with the lateral wall of a sealed section of thick bamboo, moves to discharge pipe and medical kit intercommunication left at sealed dish, and sealed dish cuts off medical kit and discharge pipe right.
The invention also discloses a process of the waste gas treatment combination device for livestock and poultry died of diseases, which comprises the following steps:
s1, electrostatic degreasing pretreatment: collecting waste gas generated by the livestock and poultry waste dead of diseases into the electrostatic oil removal purifier, wherein an electric field can attract oily particles in the foul waste gas flow to at least one insulating surface of three insulating conductors, so that oil drops are formed and discharged through an oil discharge pipe, and the cleaned gas flow flows into a primary spray tower through an air outlet pipe; when the blockage rate provided by the mesh blockage sensor exceeds a fixed threshold value, the control circuit starts the airflow pump, and the meshes are washed by cleaning airflow which provides alternate positive and negative pressure and has controllable temperature, so that the meshes are cleaned; the control circuit adjusts the size, frequency and polarity of the electric field and the flow rate of the airflow pump according to the concentration of the free radicals in the airflow sensed by the free radical sensor;
s2, spraying acid and alkali liquor for pretreatment: the first-stage spray tower and the second-stage spray tower are continuously contacted with the waste gas through the spray mechanism 24, dust particles, acid and alkaline VOCs molecules are purified and removed, and the temperature of the waste gas is reduced.
S3, degradation: the waste gas after the acid and alkali washing pretreatment is firstly put into a biological filter to wash and remove the residual chemical agent, the PH value is adjusted to be neutral, the waste gas is homogenized and enters a biodegradation section, and the components of the waste gas, such as H2S, NH3 and methyl sulfide, in the waste gas which are easy to be biodegraded are removed.
S4, photocatalysis: after chemical washing and biological purification, the waste gas enters a photocatalytic section, and the trace VOCs which are not treated at the front end are subjected to photocatalytic decomposition, including the photocatalytic decomposition of methyl mercaptan, dimethyl sulfide, aldehydes and esters.
S5, water spraying post-treatment: the third-stage spray tower further absorbs light to carry out photocatalytic decomposition and then subdivides molecules and free oxygen;
s6, dewatering and demisting: the waste gas after water spraying washing and purification contains water mist, and the water mist is removed through the combined filler.
S7, activated carbon adsorption: residual trace VOCs molecules and peculiar smell molecules of the waste gas treated in the previous working section are further removed, and the waste gas is firmly adsorbed on the surface of the active carbon or in the gaps, and has obvious removal effect on humus, synthetic organic matters and low molecular weight organic matters.
S8, discharging: and the treated waste gas reaching the standard is discharged by the induced draft fan through the chimney.
In another aspect of the present invention, an electrostatic oil-removal purifier includes an inner housing, an outer housing, an inlet pipe, a mesh structure, an outlet pipe, an oil discharge pipe, an air flow pump for supplying positive and negative pressure, a radical sensor, a mesh clogging sensor, and a control circuit, wherein the mesh structure is woven by a plurality of first insulated conductors in parallel and a plurality of second insulated conductors in vertical direction, the plurality of first insulated conductors in parallel and the plurality of insulated conductors in vertical direction define a plurality of meshes, a third insulated conductor sequentially passes through each of the meshes, and the first, second, and third insulated conductors are configured to a three-phase AC voltage source, so that an electric field is generated between the first, second, and third insulated conductors; the electric field can attract oily particles in the air flow to at least one insulating surface of the three insulating conductors, so that oil drops are formed and discharged through the oil discharge pipe; the cleaned airflow flows into the first-stage spray tower through the air outlet pipe.
Further, the screen mesh structure is fixedly arranged in the inner shell in a concentric circle mode or is fixed in the inner shell in a spiral winding mode.
Further, the upper end parts of the inner shell and the air inlet pipe are provided with a plurality of through holes.
Further, the air flow pump can provide positive and negative pressure air flow as required, when the blockage rate provided by the mesh blockage sensor exceeds a fixed threshold value, the control circuit starts the air flow pump, the meshes are washed by providing alternate positive and negative pressure and temperature-controllable clean air flow, and the control circuit adjusts the size, frequency and polarity of the electric field and the flow rate of the air flow pump according to the concentration of free radicals in the air flow sensed by the free radical sensor.
The technical scheme has the following advantages or beneficial effects:
1. the invention provides a livestock and poultry waste gas treatment combination device and a process thereof, wherein foul gas of livestock and poultry died of illness contains oil fume particles, the electrostatic oil removal device and the process provided by the invention have no potential safety hazard of arc discharge through electric field design, the contact area of an insulated conductor and the oil fume is improved, whether a mesh is blocked or not and the blocking ratio can be automatically sensed through light reflectivity or transmissivity sensed by a light sensing device, the concentration of the oil fume particles in the foul gas can be sensed through a free radical sensor, when the blocking ratio provided by a mesh blocking sensor exceeds a fixed threshold value, a control circuit starts an air flow pump, and the mesh is flushed through clean air flow with alternate positive and negative pressure and controllable temperature, so that the cleaning of the mesh is realized, and the control circuit can adjust the size, the electric field and the speed of the electric field according to the concentration of the free radical in the air flow, Frequency, polarity and flow rate of the air flow pump, so that the oil removing effect is more thorough, efficient and safe.
2. The invention provides a livestock and poultry waste gas treatment combined device and a process thereof, wherein a flared part rotates around a spraying mechanism and a rotating motor, a cleaning mechanism is arranged on the flared part above a filter screen, a water storage vessel is used for collecting liquid after spraying, and the filter screen filters settled impurities to avoid subsequent atomization and blockage.
3. The invention provides a livestock and poultry waste gas treatment combined device and a process thereof, wherein a rotating motor rotates until a cleaning mechanism is positioned below a filter screen, a motor drives a brush to rotate for cleaning impurities accumulated on the surface of the filter screen, and after spraying is finished, a circulating water tank is driven to rotate by the rotating motor to clean the impurities on the filter screen, so that the problem of blockage caused by long-time use is avoided.
4. The invention provides a livestock and poultry waste gas treatment combination device and a process thereof, wherein the other end of a main pipe is connected with an expanding part above a filter screen, a discharge pipe is connected with a spray circulating pump, the output end of the spray circulating pump is connected with a spray pipe, the spray pipe is inserted into a tower body and connected with an atomizing head, and the spray circulating pump pumps liquid in a water storage vessel, passes through the spray pipe and is atomized and sprayed by the atomizing head.
5. The invention provides a livestock and poultry waste gas treatment combined device and a process thereof, wherein a sealing disc is fixed on a medicine box, the medicine box is communicated with the side wall of the sealing disc, the sealing disc moves leftwards until a discharge pipe is communicated with the medicine box, the sealing disc blocks the medicine box and the discharge pipe rightwards, a main shaft drives a cross rod to rotate, and the sealing disc rotates and moves leftwards or rightwards along a sealing cylinder, so that the opening and closing states of the medicine box are controlled, and automatic medicine feeding is realized.
6. The combined treatment process solves the problems of waste gas oil removal, temperature reduction, dust removal, VOCs removal, odor removal and the like, and has the advantages of high waste gas purification efficiency, good deodorization effect, strong impact resistance, stable operation, simple and convenient operation and maintenance, moderate primary investment, low operating cost, no increase of secondary pollution, compact equipment, small occupied area and low energy consumption. Can stably run for a long time and reach the relevant national emission standard.
7. In addition, the process can simplify the process sections according to the requirements of the project by chemical washing absorption, water absorption, microorganism, photocatalysis and activated carbon adsorption, and then combine the process sections into an integrated device, so that the process has the advantages of more stable operation, reduced energy consumption, lower investment, compact equipment, small occupied area and the like while ensuring the purification efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a block diagram of a waste gas treatment combined device for livestock and poultry died of illness according to an embodiment of the invention;
FIG. 2 is a partial structure view of a waste gas treatment combination device for livestock and poultry died of illness according to an embodiment of the invention;
FIG. 3 is a structural view of a circulation water tank of the waste gas treatment combined device for the dead livestock and poultry according to the embodiment of the invention;
FIG. 4 is a structural diagram of a circulating water tank and a cleaning mechanism of the waste gas treatment combined device for the dead livestock and poultry according to the embodiment of the invention;
FIG. 5 is a sectional view of a circulating water tank and a cleaning mechanism of the waste gas treatment combined device for the dead livestock and poultry according to the embodiment of the invention;
FIG. 6 is a structural diagram of a dosing mechanism of the waste gas treatment combination device for livestock and poultry died of illness according to the embodiment of the invention;
FIG. 7 is a sealing disk structure diagram of the waste gas treatment combination device for livestock and poultry died of illness according to the embodiment of the invention;
FIG. 8 is a flow chart of the combined process for treating the waste gas of the livestock and poultry died of illness according to the embodiment of the invention;
FIG. 9 is a schematic view of an electrostatic oil removal purifier of a waste gas treatment combined device for livestock and poultry died of illness according to an embodiment of the invention;
FIG. 10 is a schematic diagram of a screen structure of a combined device for treating waste gas of livestock and poultry died of illness according to an embodiment of the invention.
In the figure:
1. an electrostatic oil removal purifier; 111. an inner housing; 112 an outer shell; 113. an air inlet pipe; 114. an air outlet pipe; 115. an oil discharge pipe; 116. a free radical sensor; 117. a mesh clogging sensor; 118. a control circuit; 120. a screen mesh structure; 121. a first insulating conductor; 122. a second insulated conductor; 123. a third insulated conductor; 124. a mesh; 2. a first stage spray tower; 21. a tower body; 22. a circulating water tank; 221. a flared part; 222. a water storage vessel; 223. a filter screen; 23. a dosing mechanism; 231. a servo motor; 232. a medicine chest; 233. a medicine feeding pipe; 234. sealing the disc; 235. a cross bar; 236. a main shaft; 237. a sealing cylinder; 24. a spraying mechanism; 241. a transfer cylinder; 242. a main pipe; 243. a discharge pipe; 244. a spray circulation pump; 245. a nozzle; 246. an atomizing head; 25. a negative pressure mechanism; 251. a collar; 252. a fan blade; 253. a pillar; 26. a cleaning mechanism; 261. a motor; 262. a brush; 263. a bearing seat; 3. a secondary spray tower; 4. a biological filter; 5. a photocatalyst; 6. an activated carbon adsorber; 7. an induced draft fan; 8. a chimney; 9. a third stage spray tower; 10. a rotating electric machine.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
Referring to the attached figures 1-8, a livestock and poultry waste gas treatment combination device died of illness is shown, which comprises an livestock and poultry electrostatic oil removal purifier 1 died of illness, a primary spray tower 2, a secondary spray tower 3, a biological filter 4, a photocatalyst 5, an activated carbon adsorber 6, an induced draft fan 7, a chimney 8 and a tertiary spray tower 9;
the livestock and poultry electrostatic oil removal purifier 1 which dies of diseases is connected on a first-level spray tower 2, the first-level spray tower 2 is connected on a second-level spray tower 3, the second-level spray tower 3 is connected with one end of a biological filter 4, the other end of the biological filter 4 is connected on a photocatalyst 5, the other end of the photocatalyst 5 is connected with an inlet of a third-level spray tower 9, and an outlet of the third-level spray tower 9 is connected on a chimney 8 through an activated carbon absorber 6 and an induced draft fan 7.
Referring to fig. 9-10, the above-mentioned electrostatic oil removal purifier 1 for livestock and poultry died of illness can be used as an independent technical solution, and the technical solution can be combined with other devices or processes in the present application at will. The electrostatic oil removal purifier 1 for livestock and poultry died of diseases comprises an inner shell 111, an outer shell 112, an air inlet pipe 113, a screen structure 120, an air outlet pipe 114, an oil outlet pipe 115, an air flow pump for providing positive and negative pressure, a free radical sensor 116, a mesh blockage sensor 117 and a control circuit 118. The waste gas generated by the livestock and poultry waste dead of diseases can be conveyed to the air inlet pipe 113 of the electrostatic oil-removing purifier 1 through a pipeline. The screen structure is formed by weaving a plurality of parallel first insulated conductors 121 and a plurality of vertical second insulated conductors 122, the plurality of parallel first insulated conductors and the plurality of vertical insulated conductors define a plurality of meshes 124, a third insulated conductor 123 sequentially passes through each mesh 124, specifically, a plane formed by the first insulated conductors 121 and the second insulated conductors 122 is regarded as a paper surface, and the third insulated conductor passes through every two adjacent meshes in a mode of alternately penetrating into the paper surface and penetrating out of the paper surface. The first, second and third insulated conductors are configured to a three-phase AC voltage source such that an electric field is generated between the first, second and third insulated conductors; the third insulated conductor 123 may be grounded. The electric field can attract oily particles in the air flow to at least one insulating surface of the three insulating conductors, so that oil drops are formed and discharged through the oil discharge pipe; the cleaned airflow flows into the first-stage spray tower through the air outlet pipe. By changing the direction of the electric field by adjusting the polarity, intensity and frequency of the voltage, the dotted particles are alternately accumulated on each insulated conductor under the action of charge and viscosity.
In order to improve the oil removal efficiency, the screen structure can be fixedly arranged in the inner shell in a concentric circle mode, and can also be fixed in the inner shell in a spiral winding mode to improve the contact surface area of the air flow and the screen.
Wherein, the upper end parts of the inner shell 111 and the air inlet pipe 113 are provided with a plurality of through holes to allow the air flow to smoothly flow through; the area of the mesh is 2-3 times that of the third insulated conductor to provide space for airflow.
The air current pump can provide positive negative pressure air current as required, when the jam rate that mesh jam sensor 117 provided exceeded fixed threshold, control circuit started the air current pump, through providing alternate positive negative pressure and the controllable clean air current of temperature washes the mesh to realize the cleanness of mesh, thereby control circuit can also adjust the size, frequency, polarity and the air current pump's of electric field according to the free radical concentration in the air current that the free radical sensor sensing arrived, thereby make the deoiling effect more thorough, high efficiency, safety. Preferably, the cleaning gas flow is temperature controllable.
The structure of the first-level spray tower 2, the second-level spray tower 3 and the third-level spray tower 9 is the same, the first-level spray tower 2 comprises a tower body 21, a circulating water tank 22, a dosing mechanism 23, a spraying mechanism 24, a negative pressure mechanism 25 and a cleaning mechanism 26, the circulating water tank 22 is located at the bottom of the tower body 21, the cleaning mechanism 26 is located inside the circulating water tank 22, the negative pressure mechanism 25 is located at the top of the tower body 21, one end of the spraying mechanism 24 is connected with the circulating water tank 22, the other end of the spraying mechanism 24 penetrates out of the tower body 21 to be connected with the dosing mechanism 23, the spraying mechanism 24 is inserted into the top of the tower body 21 again and located below the negative pressure mechanism 25, the top outlet of the first-level spray tower 2 is connected to the side inlet of the second-level spray tower 3 through a pipeline, and acid-base neutralization is achieved through.
The negative pressure mechanism 25 comprises a lantern ring 251, fan blades 252 and a support column 253, the lantern ring 251 is fixed on the inner wall of the tower body 21, the support column 253 transversely penetrates through the lantern ring 251, the fan blades 252 with power drive are installed in the middle of the support column 253, the fan blades 252 rotate under the power drive, waste gas of livestock and poultry died of diseases is discharged into the secondary spray tower 3 under the action of negative pressure, and the treated waste gas is quickly driven by the fan blades 252 to ascend to enter the next working procedure;
the circulating water tank 22 comprises an expanded part 221, a water storage container 222 and a filter screen 223, the top surface of the water storage container 222 is connected with the expanded part 221, the filter screen 223 is installed at the joint of the expanded part 221 and the water storage container 222, two symmetrical ends of the expanded part 221 penetrate through the tower body 21 and are respectively connected with the spraying mechanism 24 and the rotating motor 10, the expanded part 221 rotates around the spraying mechanism 24 and the rotating motor 10, the cleaning mechanism 26 is installed on the expanded part 221 above the filter screen 223, the water storage container 222 is used for collecting sprayed liquid, and the filter screen 223 filters settled impurities to avoid subsequent atomization and blockage;
the cleaning mechanism 26 comprises a motor 261, a brush 262 and a bearing seat 263, the bearing seat 263 is fixed on the top surface of the filter screen 223, the rotating shaft of the motor 261 penetrates through the bearing seat 263 to be connected with the brush 262, the bottom surface of the brush 262 is contacted with the filter screen 223, the rotating motor 10 rotates until the cleaning mechanism 26 is positioned below the filter screen 223, the motor 261 drives the brush 262 to rotate for cleaning impurities accumulated on the surface of the filter screen 223, after spraying is finished, the rotating motor 10 is used for driving the circulating water tank 22 to rotate, the impurities on the filter screen 223 are removed, and therefore the problem of blockage caused by long-time use is avoided;
the spraying mechanism 24 comprises an adapter cylinder 241, a main pipe 242, a discharge pipe 243, a spraying circulating pump 244, a spray pipe 245 and an atomizing head 246, the adapter cylinder 241 is fixed on the outer wall of the tower body 21, one end of each of the main pipe 242 and the discharge pipe 243 is inserted into the adapter cylinder 241, the other end of the main pipe 242 is connected with an expanding part 221 above the filter screen 223, the discharge pipe 243 is connected to the spraying circulating pump 244, the output end of the spraying circulating pump 244 is connected with the spray pipe 245, the spray pipe 245 is inserted into the tower body 21 and connected with the atomizing head 246, and liquid in the water storage pan 222 is sucked by the spraying circulating pump 244 and atomized and sprayed.
The medicine adding mechanism 23 comprises a servo motor 231, a medicine box 232, a medicine adding pipe 233, a sealing disc 234, a cross rod 235, a main shaft 236 and a sealing barrel 237, one end of the main shaft 236 is fixed on the servo motor 231, the other end of the main shaft 236 is inserted by the cross rod 235, and the cross rod 235 slides in the main shaft 236;
the cross rod 235 is inserted into the sealing cylinder 237 to be connected with the sealing disc 234, the sealing disc 234 is in threaded connection with the sealing disc 234, the top of the sealing cylinder 237 is communicated with the discharge pipe 243 through the medicine feeding pipe 233, the sealing cylinder 237 is fixed on the medicine box 232, the medicine box 232 is communicated with the side wall of the sealing cylinder 237, the sealing disc 234 moves leftwards until the discharge pipe 243 is communicated with the medicine box 232, the sealing disc 234 blocks the medicine box 232 and the discharge pipe 243 rightwards, the main shaft 236 of the sealing disc 236 drives the cross rod 235 to rotate, the sealing disc 234 rotates to move leftwards or rightwards along the sealing cylinder 237, so that the opening and closing states of.
The invention also discloses a process of the waste gas treatment combination device for livestock and poultry died of diseases, which comprises the following steps:
the first step is as follows: foul waste gas generated in the process of disposing livestock and poultry waste dead of diseases is collected into the electrostatic oil removal purifier, oily particles in air flow can be attracted to at least one insulating surface of three insulating conductors by an electric field, so that oil drops are formed and discharged through an oil discharge pipe, and the cleaned air flow flows into a primary spray tower through an air outlet pipe; when the clogging rate provided by the clogging sensor 117 exceeds a fixed threshold, the control circuit 118 activates the air flow pump to flush the meshes by providing alternate positive and negative pressure and temperature controlled cleaning air flows to effect cleaning of the meshes; control circuitry 118 adjusts the magnitude, frequency, polarity of the electric field and flow rate of the gas flow pump based on the concentration of radicals in the gas flow as sensed by the radical sensor. Then conveying the waste gas after the electrostatic oil removal pretreatment to a primary spray tower 2;
the second step is that: the acid liquor spraying is carried out for pretreatment, the first-stage spraying tower 2 is a differential contact counterflow type, and the filler in the tower is a basic component for gas-liquid two-phase contact, so that the large enough surface area can be provided, and excessive resistance to gas-liquid flow cannot be caused. The absorbent is an acidic agent (sulfuric acid and the like), the acidic agent is added into water, the pH value is adjusted to a set value meeting the operation, and the absorbent is continuously contacted with the waste gas in the filler to purify and remove dust particles and alkaline VOCs molecules. At the same time, the exhaust gas temperature is reduced.
The third step: the second stage spray tower 3 is pretreated, the spray tower is in differential contact countercurrent, and the filler in the tower is a basic component for gas-liquid two-phase contact, and can provide enough large surface area and cannot cause excessive resistance to gas-liquid flow. The absorbent is alkaline agent (caustic soda, etc.), the alkaline agent is added into water, the PH value is adjusted to the set value meeting the operation, the absorbent is continuously contacted with the waste gas in the filler, and the dust particles and the acidic VOCs molecules are purified and removed. At the same time, the exhaust gas temperature is reduced.
The fourth step: the biological filter 4 is composed of a washing humidification section and a biological section, waste gas after acid and alkali washing pretreatment enters the washing section, residual chemical agents in the waste gas are mainly washed and removed, the PH value is adjusted to be neutral, the waste gas is homogenized and enters the biodegradation section, volcanic rock packing is adopted as biological filter bed packing, a biological membrane with a certain thickness is formed on the surface of the biological filter bed packing through membrane hanging, and various dominant floras with deodorization capacity are fixed. Odorous gas passes through the filler space from bottom to top, and waste gas is intercepted and decomposed; the upper part of the filler is intermittently sprayed with water, so that the wetting of the filler is ensured, and favorable conditions are provided for biological metabolism and reproduction. The waste gas is contacted with the water film on the surface of the filling material (biological medium) moistened by the dispersed water to be dissolved, and simultaneously, the waste gas is absorbed, decomposed and utilized by the microorganisms inhabiting the filling material (biological medium), and the three phenomena of oxidation, decomposition and utilization are synchronously carried out, so that H in the waste gas is mainly removed2S、NH3And methyl sulfide and the like are easy to biodegrade waste gas components.
The fifth step: the photocatalyst 5 is subjected to chemical washing and biological purification, and the waste gas enters the photocatalytic section which collects the waste gasBy using foam metal tip nano composite technology, the excellent characteristics of nano photocatalyst material and foam nickel are integrated, and a certain amount of nano TiO is uniformly loaded on the foam nickel substrate2So as to obtain the supported photocatalytic functional material. The foam nickel can be used as an excellent photocatalyst carrier due to the unique three-dimensional network structure, and the nano TiO loaded on the surface of the foam nickel2Is one of the most studied and applied photocatalysts so far. TiO 22Its electronic structure is characterized by a full valence band and an empty conduction band, and under the condition of light irradiation whose energy is greater than its band gap energy (Eg 3.2ev, equivalent to photon energy with wave length of 387.5 nm), the electron can be excited from valence band to conduction band to form free electron, and a positively charged hole can be formed in valence band to form electron-hole pair
TiO2+hυ→(TiO2)h++(TiO2)e-
The valence band hole is a good oxidant and the conduction band electron is a good reductant. The holes generally react with surface-adsorbed H2O or OH-ions to form reactive hydroxyl groups (. OH) with strong oxidizing properties
h++H2O→·OH+H+
h++OH-→·OH
The electrons react with the surface-adsorbed oxygen molecule (O2) to generate superoxide ions (. O2-). The superoxide ion can further react with water to generate perhydroxyl (OOH) and hydrogen peroxide (H2O2)
e-+O2→·O2-
·O2-+H2O→·OOH+OH-
2·OOH→H2O2+O2
·OOH+H2O+e-→H2O2+OH-
H2O2+e-→·OH+OH-
TiO2The photocatalytic oxidation is active hydroxyl (OH) and other active oxidation species (O)2-，·OOH，H2O2) The result of the combined action. In TiO2The surface generated OH groups have high reactivity and are higher than various chemicals in organic mattersReaction energy of bond energy, plus O2-，·OOH，H2O2The synergistic effect of the active oxidation substances can quickly and effectively decompose the organic substances. The main functions are as follows: the front-end untreated trace VOCs are subjected to photocatalytic decomposition, mainly comprising methyl mercaptan, dimethyl sulfide, aldehydes, esters and the like, so as to achieve inorganic and harmless decomposition.
And a sixth step: after water spraying treatment, the third stage spray tower 9 is in differential contact countercurrent type, and the filler in the tower is a basic component for gas-liquid two-phase contact, and can provide enough large surface area and cannot cause excessive resistance to gas-liquid flow. The absorbent is water solution, water is contacted with waste gas continuously in the filler, and the absorbent further absorbs light to catalyze and decompose the fine molecules, free oxygen and the like.
The seventh step: and in the dewatering and demisting section, the waste gas after water spraying, washing and purifying contains water mist, and the water mist is removed through the combined filler, so that the waste gas treatment in the subsequent working section is facilitated.
Eighth step: the activated carbon absorber 6 absorbs the waste gas, and can further remove residual trace VOCs molecules and peculiar smell molecules of the waste gas treated in the previous working section as a tail end deep guarantee purification working section of the whole treatment process, and the activated carbon absorption is a measure for effectively removing odor, natural and synthetic dissolved organic matters, micro-pollutants and the like. Most of larger organic molecules, aromatic compounds, halogenated alkynes and the like can be firmly adsorbed on the surface of the active carbon or in gaps, and have obvious removal effect on humus, synthetic organic matters and low molecular weight organic matters.
The ninth step: the treated waste gas reaching the standard is discharged by the induced draft fan 7 through the chimney 8.
The combined treatment process solves the problems of waste gas oil removal, temperature reduction, dust removal, VOCs removal, odor removal and the like, and has the advantages of high waste gas purification efficiency, good deodorization effect, strong impact resistance, stable operation, simple and convenient operation and maintenance, moderate primary investment, low operating cost, no increase of secondary pollution, compact equipment, small occupied area and low energy consumption. Can stably run for a long time and reach the relevant national emission standard.
In addition, the process can simplify the process sections according to the requirements of the project by electrostatic oil removal pretreatment, chemical washing absorption, water absorption, microorganisms, photocatalysis and activated carbon adsorption, and then combine the process sections into an integrated device, so that the process has the advantages of more stable operation, reduced energy consumption, lower investment, compact equipment, small occupied area and the like while ensuring the purification efficiency.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a beasts and birds exhaust-gas treatment composite set dies of illness which characterized in that: comprises an electrostatic oil removal purifier (1), a primary spray tower (2), a secondary spray tower (3), a biological filter (4), a photocatalyst (5), an activated carbon absorber (6), an induced draft fan (7), a chimney (8) and a tertiary spray tower (9);
the electrostatic oil removal purifier (1) is connected to a first-stage spray tower (2), the first-stage spray tower (2) is connected to a second-stage spray tower (3), the second-stage spray tower (3) is connected with one end of a biological filter (4), the other end of the biological filter (4) is connected to a photocatalyst (5), the other end of the photocatalyst (5) is connected with an inlet of a third-stage spray tower (9), and an outlet of the third-stage spray tower (9) is connected to a chimney (8) through an activated carbon absorber (6) and an induced draft fan (7).
2. The waste gas treatment combination device for livestock and poultry died of illness according to claim 1, characterized in that the electrostatic oil removal purifier (1) comprises an inner casing (111), an outer casing (112), an air inlet pipe (113), a screen structure (120), an air outlet pipe (114), an oil outlet pipe (115), an air flow pump providing positive and negative pressure, a free radical sensor (116), a mesh clogging sensor (117) and a control circuit (118), wherein the screen structure is woven by a plurality of parallel first insulated conductors (121) and a plurality of vertical second insulated conductors (122), the plurality of first parallel insulated conductors and the plurality of vertical insulated conductors define a plurality of meshes, a third insulated conductor (123) sequentially passes through each mesh (124), the first, second and third insulated conductors are configured to a three-phase AC voltage source, such that at the first, second and third insulated conductors, the three-phase AC voltage source is configured such that the three-phase AC voltage source is applied to the first, second and third insulated, Generating an electric field between the second and third insulated conductors; the electric field can attract oily particles in the air flow to at least one insulating surface of the three insulating conductors, so that oil drops are formed and discharged through the oil discharge pipe; the cleaned airflow flows into the first-stage spray tower through the air outlet pipe.
3. The livestock and poultry waste gas treatment combination device dead of diseases according to claim 2, characterized in that the first-stage spray tower (2), the second-stage spray tower (3) and the third-stage spray tower (9) have the same structure, the first-stage spray tower (2) comprises a tower body (21), a circulating water tank (22), a dosing mechanism (23), a spraying mechanism (24), a negative pressure mechanism (25) and a cleaning mechanism (26), the circulating water tank (22) is positioned at the bottom of the tower body (21), the cleaning mechanism (26) is positioned inside the circulating water tank (22), the negative pressure mechanism (25) is positioned at the top of the tower body (21), one end of the spraying mechanism (24) is connected with the circulating water tank (22), the other end of the spraying mechanism (24) penetrates out of the tower body (21) to be connected with the dosing mechanism (23), the spraying mechanism (24) is reinserted into the top of the tower body (21) to be positioned below the negative pressure mechanism (25), the top outlet of the first-stage spray tower (2) is connected to the side inlet of the second-stage spray tower (3) through a pipeline.
4. The waste gas treatment combination device for the livestock and poultry died of illness according to claim 3, characterized in that the negative pressure mechanism (25) comprises a sleeve ring (251), fan blades (252) and a support column (253), the sleeve ring (251) is fixed on the inner wall of the tower body (21), the support column (253) transversely penetrates through the sleeve ring (251), the fan blades (252) with power drive are installed in the middle of the support column (253), the fan blades (252) rotate under the power drive, and the waste gas of the livestock and poultry died of illness is discharged into the secondary spray tower (3) under the action of the negative pressure;
the circulating water tank (22) comprises an expansion part (221), a water storage container (222) and a filter screen (223), the top surface of the water storage container (222) is connected with the expansion part (221), the filter screen (223) is installed at the joint of the expansion part (221) and the water storage container (222), two symmetrical ends of the expansion part (221) penetrate through the tower body (21) and are respectively connected with the spraying mechanism (24) and the rotating motor (10), the expansion part (221) rotates around the spraying mechanism (24) and the rotating motor (10), and a cleaning mechanism (26) is installed on the expansion part (221) above the filter screen (223);
the cleaning mechanism (26) comprises a motor (261), a brush (262) and a bearing seat (263), the bearing seat (263) is fixed on the top surface of the filter screen (223), a rotating shaft of the motor (261) penetrates through the bearing seat (263) to be connected with the brush (262), the bottom surface of the brush (262) is in contact with the filter screen (223), the rotating motor (10) rotates until the cleaning mechanism (26) is located below the filter screen (223), and the motor (261) drives the brush (262) to rotate to clean impurities accumulated on the surface of the filter screen (223);
the spraying mechanism (24) comprises an adapter cylinder (241), a main pipe (242), a discharge pipe (243), a spraying circulating pump (244), a spraying pipe (245) and an atomizing head (246), the adapter cylinder (241) is fixed on the outer wall of the tower body (21), one end of each of the main pipe (242) and the discharge pipe (243) is inserted into the adapter cylinder (241), the other end of the main pipe (242) is connected with an expanding part (221) above the filter screen (223), the discharge pipe (243) is connected onto the spraying circulating pump (244), the output end of the spraying circulating pump (244) is connected with the spraying pipe (245), the spraying pipe (245) is inserted into the tower body (21) and is connected with the atomizing head (246), and liquid in the spraying circulating pump (244) is sprayed in a water storage vessel (222) in an atomizing mode through the spraying pipe (245) and.
5. The waste gas treatment combination device for the livestock and poultry died of illness according to claim 4, characterized in that the dosing mechanism (23) comprises a servo motor (231), a medicine box (232), a dosing pipe (233), a sealing disc (234), a cross rod (235), a main shaft (236) and a sealing cylinder (237), one end of the main shaft (236) is fixed on the servo motor (231), the other end of the main shaft (236) is inserted by the cross rod (235), and the cross rod (235) slides in the main shaft (236);
the cross rod (235) is inserted into a sealing cylinder (237) and is connected with the sealing disc (234), the sealing disc (234) is in threaded connection with the sealing disc (234), the top of the sealing cylinder (237) is communicated with a discharge pipe (243) through a medicine adding pipe (233), the sealing cylinder (237) is fixed on a medicine box (232), the medicine box (232) is communicated with the sealing cylinder (237), the sealing disc (234) moves to the left to the discharge pipe (243) to be communicated with the medicine box (232), and the sealing disc (234) blocks the medicine box (232) and the discharge pipe (243) to the right.
6. The waste gas treatment process for livestock and poultry died of illness of the waste gas treatment combination device for livestock and poultry died of illness of claim 5, characterized by comprising the following steps:
s1, electrostatic degreasing pretreatment: collecting waste gas generated by the livestock and poultry died of diseases into the electrostatic oil removal purifier, wherein an electric field can attract oily particles in air flow to at least one insulating surface of three insulating conductors, so that oil drops are formed and discharged through an oil discharge pipe, and the cleaned air flow flows into a primary spray tower through an air outlet pipe; when the clogging rate provided by the clogging sensor (117) exceeds a fixed threshold, the control circuit (118) starts the air flow pump to flush the meshes by providing alternate positive and negative pressure and temperature-controlled cleaning air flows, thereby realizing the cleaning of the meshes; the control circuit (118) adjusts the magnitude, frequency, polarity of the electric field and the flow rate of the air flow pump according to the concentration of the free radicals in the air flow sensed by the free radical sensor;
s2, spraying acid and alkali liquor for pretreatment: the first-stage spray tower (2) and the second-stage spray tower (3) are continuously contacted with the waste gas through a spray mechanism (24), so that dust particles, acid and alkaline VOCs molecules are purified and removed, and the temperature of the waste gas is reduced;
s3, degradation: the waste gas after the acid and alkali washing pretreatment enters a biological filter (4) to wash and remove the residual chemical agent, the PH value is adjusted to be neutral, the waste gas is homogenized and enters a biodegradation section, and H2S, NH3 and methyl sulfide in the waste gas are removed from the easily biodegradable waste gas components;
s4, photocatalysis: after chemical washing and biological purification, the waste gas enters a photocatalytic section, and the trace VOCs which are not treated at the front end are subjected to photocatalytic decomposition, including the photocatalytic decomposition of methyl mercaptan, dimethyl sulfide, aldehydes and esters;
s5, water spraying post-treatment: the three-stage spray tower (9) further absorbs light to be decomposed and then subdivides molecules and free oxygen;
s6, dewatering and demisting: the waste gas after water spraying, washing and purifying contains water mist, and the water mist is removed through the combined filler;
s7, activated carbon adsorption: residual trace VOCs molecules and peculiar smell molecules of the waste gas treated in the previous working section are further removed, and the waste gas is firmly adsorbed on the surface of the active carbon or in gaps, and has obvious removal effect on humus, synthetic organic matters and low molecular weight organic matters;
s8, discharging: the treated waste gas reaching the standard is discharged by the induced draft fan (7) through the chimney (8).
7. An electrostatic oil removal purifier for treating waste gas of livestock and poultry died of diseases is characterized by comprising an inner shell (111), an outer shell (112), an air inlet pipe (113), a screen structure (120), an air outlet pipe (114), an oil discharge pipe (115), an air flow pump for providing positive and negative pressure, a free radical sensor (116), a mesh blockage sensor (117) and a control circuit (118), wherein the screen structure is woven from a plurality of parallel-oriented first insulated conductors (121) and a plurality of vertical-oriented second insulated conductors (122), the plurality of first parallel-oriented insulated conductors and the plurality of vertical-oriented insulated conductors defining a plurality of cells, a third insulated conductor (123) passing through each cell (124) in sequence, the first, second and third insulated conductors being arranged to a three-phase AC voltage source such that an electric field is generated between the first, second and third insulated conductors; the electric field can attract oily particles in the air flow to at least one insulating surface of the three insulating conductors, so that oil drops are formed and discharged through the oil discharge pipe; the cleaned airflow flows into the first-stage spray tower through the air outlet pipe.
8. The electrostatic oil-removing purifier for the waste gas treatment of livestock and poultry died of diseases as claimed in claim 7, wherein said screen structure is fixedly arranged in the inner shell in the form of concentric circles or fixed in the inner shell by spiral winding.
9. The electrostatic oil-removing purifier for the exhaust gas treatment of livestock and poultry died of diseases as claimed in claim 7, wherein said inner housing (111), upper end of air inlet pipe (113) have a plurality of through holes.
10. The electrostatic oil-removal purifier for the treatment of exhaust gas of livestock and poultry died of illness according to claim 7, wherein the air flow pump is capable of providing positive and negative pressure air flow as required, when the clogging rate provided by the mesh clogging sensor (117) exceeds a fixed threshold, the control circuit activates the air flow pump to flush the meshes by providing alternate positive and negative pressure and temperature-controlled clean air flow, the control circuit adjusts the magnitude, frequency, polarity of the electric field and flow rate of the air flow pump according to the concentration of free radicals in the air flow sensed by the free radical sensor.
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| CN115025613B (en) * | 2022-06-27 | 2023-10-24 | 华夏中然生态科技集团有限公司 | High-efficient processing system of waste gas in hospital's sewage station |
| CN117138495A (en) * | 2023-11-01 | 2023-12-01 | 江苏百海环保科技集团有限公司 | Photoelectric treatment equipment for purifying organic waste gas |
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Application publication date: 20210618 |
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