CN112675677A - Organic waste gas treatment device and method - Google Patents

Abstract

The invention relates to the field of waste gas treatment, in particular to an organic waste gas treatment device and method. The invention comprises the following steps: the device comprises a treatment tank, a washing tower, an air guide pipe, a centrifugal fan, a communicating pipe, an exhaust pipe, a packaging box, an air inlet pipe, a mixed flow fan, a dehydrator, an exhaust pipe and a return pipe, wherein the air guide pipe is connected to the top end of the washing tower, the packaging box is arranged at the bottom end of the air guide pipe, the communicating pipe is arranged at the top end of the packaging box, the exhaust pipe is arranged on the side edge of the packaging box, and the centrifugal fan is arranged at the bottom end. According to the invention, the waste gas is guided into the inner tank through the uniformly arranged flow dividing pipes to form uniform mixing of micro bubbles and water, so that the pretreated gas is ensured to uniformly move upwards to contact with the nano micro bubbles, and the mixed gas is subjected to mixing reaction through the mixed flow fan.

Description

Organic waste gas treatment device and method

Technical Field

The invention relates to the field of waste gas treatment, in particular to an organic waste gas treatment device and method.

Background

Industrial waste gas often contains more organic pollutants of VOCs, and according to the policy of relevant environmental protection authorities, after irritant VOCs waste gas is treated, the emission concentration and the emission rate of waste gas should strictly execute relevant standard specifications, so that the existing factory needs to separately arrange waste gas treatment equipment to treat and then discharge the discharged waste gas.

At present, methods such as an activated carbon adsorption method, a direct combustion method, an adsorption-catalytic combustion method and the like are basically adopted to treat waste gas, but the methods have more defects, 1, the activated carbon adsorption method is not suitable for a large air volume system and is only suitable for treating low-concentration organic waste gas, the wind resistance coefficient is large, the power consumption of a fan is large, the operation cost is high, in addition, dangerous solid waste is generated, secondary pollution is caused, the activated carbon management is complicated, and the supervision difficulty is large; 2. the direct combustion method has the advantages of high treatment temperature, high energy consumption, high operating cost, secondary pollution, high manufacturing cost of a combustion device, a combustion chamber and a heat recovery device, difficult maintenance, higher requirements on safety technology and operation, high decomposition temperature and potential safety hazard, and the adsorption-catalytic combustion method has the problems of secondary pollution and saturated replacement of activated carbon, higher requirements on safety technology and operation, unobvious energy conservation, high energy consumption, high operating cost, lower decomposition temperature due to direct combustion, certain potential safety hazard and difficult supervision of activated carbon saturation in discontinuous production.

The superoxide nanometer microbubble technology (MBS) effectively solves the problems, but the waste gas is required to be atomized and humidified in advance in the application of the MBS technology and then mixed and purified with the superoxide nanometer microbubbles, the operation mode needs to feed the waste gas in a flow selection mode to be efficiently combined with atomized water, but the combined air flow still has larger cyclone kinetic energy, the nanometer bubbles are easy to break in advance after meeting the superoxide nanometer microbubbles, a large amount of nanometer bubbles are consumed before entering a mixing flow, the mixing uniformity of the nanometer bubbles and the waste gas is greatly reduced, and the waste gas treatment effect is difficult to achieve idealization.

Therefore, there is a need to provide a new organic waste gas treatment device and method to solve the above-mentioned technical problems.

Disclosure of Invention

In order to solve the above technical problems, the present invention provides an organic waste gas treatment apparatus and method for ensuring sufficient mixing of nano microbubbles.

The organic waste gas treatment device provided by the invention comprises: the device comprises a treatment tank, a washing tower, a wind guide pipe, a centrifugal fan, a communicating pipe, an exhaust pipe, a packaging box, an air inlet pipe, a mixed flow fan, a dehydrator, an exhaust pipe and a return pipe, wherein the top end of the washing tower is connected with the wind guide pipe, the bottom end of the wind guide pipe is provided with the packaging box, the top end of the packaging box is provided with the communicating pipe, the side edge of the packaging box is provided with the exhaust pipe, the bottom end of the exhaust pipe is provided with the centrifugal fan, the communicating pipe is connected with the centrifugal fan, the inside of the packaging box is provided with the treatment tank, the bottom of the treatment tank is provided with a pretreatment mechanism for mixing and combining waste gas, the center position of the pretreatment mechanism is connected with the air inlet pipe, the air inlet pipe is connected with the wind guide pipe, the top end of the treatment tank is fixedly provided with the, the exhaust end of dehydrator is connected with the blast pipe, the blast pipe is connected with communicating pipe, it has the diversified microbubble mechanism that sprays nanometer bubble to handle jar externally mounted, and microbubble mechanism is connected with preliminary treatment mechanism and processing jar respectively.

Preferably, the pretreatment mechanism comprises an inner tank, an outer tank, a communication port, a flow dividing pipe, a flow dividing box and a permeation net, the inner tank is fixed at the bottom end inside the treatment tank and is hollow, the flow dividing box is fixed at the central position of the inner tank, the flow dividing pipe is uniformly connected to the top of the flow dividing box and is connected with the inner tank, the air inlet pipe is connected with the bottom surface of the flow dividing box, the outer tank is fixed outside the treatment tank, the bottom of the outer tank is positioned below the inner tank, the communication port is uniformly formed in the bottom end of the edge of the inner tank and is communicated with the outer tank, the permeation net is fixed above the communication port between the outer tank and the treatment tank, and the backflow pipe is connected to the outer tank and positioned above the permeation net;

microbubble mechanism includes ring canal, microbubble shower nozzle, connecting pipe and water pump, it is the undergauge structure that leaks hopper-shaped to handle the tank deck, the outer wall cover at the undergauge position of handling the jar is equipped with the ring canal, ring canal surface evenly is connected with the microbubble shower nozzle, the microbubble shower nozzle penetrates and handles jar inside, and the microbubble shower nozzle is the installation of forty-five degrees slopes downwards, the ring canal is connected with the connecting pipe, outsourcing jar outside is fixed with the water pump, and the end of intaking of water pump connects the top that lies in the infiltration net at the outsourcing jar, the connecting pipe is connected with water pump drainage end.

Preferably, the inner diameter of the shunt pipe is 0.8cm-1cm, the shunt pipe is of a U-shaped structure, the height of the exhaust pipe is larger than 15m, the diameters of the air guide pipe and the communicating pipe are 1200mm, and the air guide pipe, the air inlet pipe, the exhaust pipe and the communicating pipe are all connected through flange end plates.

Preferably, the top height of the outer can is higher than that of the inner can, and the end part of the shunt pipe is positioned at the center of the height of the inner can.

Preferably, inner tank internally mounted has mixing arrangement, mixing arrangement includes ring box, impeller, driven gear, goes up rack, crown plate, lower rack, drive gear, motor and seal box, ring box and inner tank fixed connection, ring box top surface is located the shunt tubes and corresponds the position rotation and install the impeller, the impeller bottom mounting has driven gear, ring box internally mounted has the crown plate, the crown plate top surface is fixed with the upper rack, driven gear is connected with last rack meshing, the motor is installed to ring box bottom surface, motor output shaft is fixed with drive gear, the crown plate bottom surface is fixed with lower rack, drive gear is connected with lower rack meshing, ring box bottom surface is located the motor external fixation and has the seal box.

Preferably, the micro-bubble nozzle comprises a spray pipe, a reducing groove, a first-stage diameter expansion groove, a second-stage diameter expansion groove, an open pipe, an expansion shell and an air inlet pipe, the spray pipe is fixedly connected with an annular pipe, the reducing groove, the first-stage diameter expansion groove and the second-stage diameter expansion groove are sequentially formed in the spray pipe, the diameter ratio of the reducing groove to the first-stage diameter expansion groove to the second-stage diameter expansion groove is 1:2:4, the open pipe is fixed to the end portion of the spray pipe, the expansion shell is fixed to the outer wall of the spray pipe, the air inlet pipe is fixed to the interior of the expansion shell at equal intervals, the air inlet pipe is communicated with the first-stage diameter expansion groove and the second-stage diameter expansion groove respectively, and.

Preferably, drainage device is installed to outsourcing tank bottom, drainage device includes drain pipe, pipe cap and turns round the handle, the drain pipe is connected with the outsourcing jar, the pipe cap is installed to drain pipe tip screw thread, the pipe cap outer wall is fixed with turns round the handle.

Preferably, the tip of intake pipe is installed and is prevented mechanism against current, prevent against current the mechanism including holding case, closure plate, support and rubber circle, the intake pipe with hold the case intercommunication, it is fixed with the support to hold incasement portion bottom surface, and the support rotates through torsion spring elasticity and installs the closure plate, the closure plate bottom surface is fixed with the rubber circle, and the port structure cooperation of rubber circle and intake pipe.

The invention also provides a method for treating the organic waste gas, and the device based on the invention comprises the following steps:

1) pretreatment: waste gas is guided into the flow distribution box through the gas inlet pipe, then the waste gas forms a plurality of capillary gas paths through the flow distribution pipe and is guided into the inner tank, the inner tank contains water, and the waste gas is emitted from bubbles which are uniformly fine and formed in the water;

2) processing nano micro bubbles: the pretreated waste gas rises inside, a micro-bubble mechanism is started to conduct water purification in the outer tank into the annular pipe through a connecting pipe, a large amount of nano micro-bubbles are blown out by a micro-bubble nozzle, and the waste gas and the nano micro-bubbles are mixed;

3) mixing treatment: the waste gas with the nanometer micro bubbles is adsorbed by a mixed flow fan to be fully mixed and reacted to form purified gas;

4) the purified gas after reaction has a large amount of water and enters a dehydrator for dehydration treatment, relatively clean gas is discharged through an exhaust pipe, and the recovered water is introduced into the outer tank through a return pipe.

Compared with the related art, the organic waste gas treatment device and method provided by the invention have the following beneficial effects:

1. the uniformly arranged flow dividing pipes guide the waste gas into the inner tank to form uniform mixing of tiny bubbles and water, ensure that the pretreated gas uniformly moves upwards to contact with the nano micro bubbles, and carry out mixing reaction through the mixed flow fan;

2. according to the invention, the water in the inner tank is used for filtering large particles in the waste gas, and the bottom of the inner tank is communicated with the outer tank through the communication port, so that the particles mixed in the water enter the outer tank and are settled, the impurity concentration of the liquid in the inner tank is effectively reduced, and the pretreatment effect is improved;

3. according to the invention, the drainage device is arranged at the bottom of the outer tank, so that the impurity water in the inner tank and the outer tank can be conveniently treated in the later period, and the later-period cleaning and maintenance of the equipment are simplified;

4. the invention changes the traditional downward direct injection mode of nano micro bubbles, adopts an inclined spraying mode to mix uniformly upward waste gas, and the part of the treatment tank close to the mixed flow fan is in a diameter-reducing leak shape, so that upward air flow has the tendency of gathering and guiding, and the uniformly inclined micro bubble nozzle ensures the uniform mixing of nano micro bubbles and the waste gas;

5. the invention adopts the anti-reflux mechanism of the anti-reflux mechanism to automatically plug the air inlet pipe, and effectively solves the problem of suck-back of water in the inner tank by the U-shaped shunt pipe.

6. Compared with the traditional micro-bubble generating device, the invention adopts a double-stage expansion structure to fully mix gas and water, so that bubbles are generated more uniformly.

Drawings

FIG. 1 is a schematic structural diagram of an organic waste gas treatment apparatus and method according to a preferred embodiment of the present invention;

FIG. 2 is a schematic view of the enclosure of the present invention;

FIG. 3 is a schematic diagram of the internal structure of the pretreatment mechanism of the present invention;

FIG. 4 is a schematic diagram of the pretreatment mechanism shown in FIG. 3;

FIG. 5 is a schematic view of the structure of the drain shown in FIG. 3;

fig. 6 is a schematic structural view of the micro-bubble mechanism shown in fig. 3;

FIG. 7 is a schematic structural view of the backflow prevention mechanism shown in FIG. 4;

FIG. 8 is a schematic view of a microbubble showerhead of the present invention;

FIG. 9 is a schematic structural view of a mixing device according to the present invention;

FIG. 10 is a schematic view of a VOC gas decomposition process;

fig. 11 is a schematic diagram of the surface potential of the nano-microbubbles.

Reference numbers in the figures: 1. a treatment tank; 11. a washing tower; 12. an air guide pipe; 13. a centrifugal fan; 14. a communicating pipe; 15. an exhaust duct; 16. packaging the box; 17. a mixing device; 171. a ring box; 172. an impeller; 173. a driven gear; 174. an upper rack; 175. a ring plate; 176. a lower rack; 177. a drive gear; 178. a motor; 179. a sealing box; 2. a pretreatment mechanism; 21. an inner tank; 22. packaging the cans; 23. a communication port; 24. a shunt tube; 25. a shunt box; 26. a permeable web; 3. an air inlet pipe; 4. a micro bubble mechanism; 41. a ring pipe; 42. a micro bubble spray head; 421. a nozzle; 422. a reducing groove; 423. a first-stage diameter expansion groove; 424. a secondary diameter expanding groove; 425. an open tube; 426. expanding the shell; 427. an air inlet pipe; 43. a connecting pipe; 44. a water pump; 5. a drainage device; 51. a drain pipe; 52. a pipe cap; 53. twisting a handle; 6. a mixed flow fan; 7. a dehydrator; 8. an exhaust pipe; 9. an anti-reflux mechanism; 91. an accommodating box; 92. a blocking plate; 93. a support; 94. a rubber ring; 10. a return pipe.

Detailed Description

The invention is further described with reference to the following figures and embodiments.

Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10 and fig. 11 in combination, wherein fig. 1 is a schematic structural diagram of a preferred embodiment of an organic waste gas treatment apparatus and method according to the present invention; FIG. 2 is a schematic view of the enclosure of the present invention; FIG. 3 is a schematic diagram of the internal structure of the pretreatment mechanism of the present invention; FIG. 4 is a schematic diagram of the pretreatment mechanism shown in FIG. 3; FIG. 5 is a schematic view of the structure of the drain shown in FIG. 3; fig. 6 is a schematic structural view of the micro-bubble mechanism shown in fig. 3; FIG. 7 is a schematic structural view of the backflow prevention mechanism shown in FIG. 4; FIG. 8 is a schematic view of a microbubble showerhead of the present invention; FIG. 9 is a schematic structural view of a mixing device according to the present invention; FIG. 10 is a schematic view of a VOC gas decomposition process; fig. 11 is a schematic diagram of the surface potential of the nano-microbubbles.

As shown in fig. 1, an organic exhaust gas treatment device includes: the device comprises a treatment tank 1, a washing tower 11, an air guide pipe 12, a centrifugal fan 13, a communicating pipe 14, an exhaust pipe 15, a packaging box 16, an air inlet pipe 3, a mixed flow fan 6, a dehydrator 7, an exhaust pipe 8 and a return pipe 10.

In the specific implementation process, as shown in fig. 1, 2 and 3, the top end of the washing tower 11 is connected with an air guide pipe 12, the bottom end of the air guide pipe 12 is provided with a packaging box 16, the top end of the packaging box 16 is provided with a communicating pipe 14, the side edge of the packaging box 16 is provided with an exhaust pipe 15, the bottom end of the exhaust pipe 15 is provided with a centrifugal fan 13, the communicating pipe 14 is connected with the centrifugal fan 13, the packaging box 16 is internally provided with a treatment tank 1, the bottom of the treatment tank 1 is provided with a pretreatment mechanism 2 for mixing and combining waste gas, the center position of the pretreatment mechanism 2 is connected with an air inlet pipe 3, the air inlet pipe 3 is connected with the air guide pipe 12, the top end of the treatment tank 1 is fixedly provided with a mixed flow fan 6, the exhaust end of the mixed flow fan 6 is connected with a dehydrator 7, the drainage end of the dehydrator 7 is connected, the exhaust end of dehydrator 7 is connected with blast pipe 8, blast pipe 8 is connected with communicating pipe 14, handle 1 externally mounted of jar has diversified microbubble mechanism 4 that sprays nanometer bubble, and microbubble mechanism 4 is connected with pretreatment mechanism 2 and processing jar 1 respectively.

Leading-in scrubbing tower 11 of waste gas is carried out preliminary washing, this process is the basic step of general chemical waste gas treatment, waste gas after the washing passes through guide duct 12 and intake pipe 3 in pretreatment mechanism 2 inside, form even tiny bubble and water with waste gas by pretreatment mechanism 2 again and mix the preliminary treatment, produce nanometer microbubble through microbubble mechanism 4 and mix with the gas that pretreatment mechanism 2 handled, the purification of waste gas is realized to gas-liquid mixture through muddy flow fan 6, the moisture of gas after purifying leads back pretreatment mechanism 2 inside through backflow pipe 10 through dehydrator 7, purified gas leads to in communicating pipe 14 through blast pipe 8, discharge treated gas from exhaust pipe 15 through centrifugal fan 13.

The traditional air inlet treatment adopts a rotational flow mode to be matched with atomization water spray to form humid air, but the waste gas after the placement treatment still has larger rotational flow energy, so that the combination uniformity of the waste gas and the nano micro bubbles is greatly influenced, the problem is solved by adopting a pretreatment mechanism 2, and the specific operation is as follows:

as shown in fig. 4, preliminary treatment mechanism 2 includes inner tank 21, outsourcing jar 22, intercommunication mouth 23, shunt tubes 24, flow distribution box 25 and infiltration net 26, the inside bottom mounting of processing jar 1 has inner tank 21, and inner tank 21 is the cavity form, inner tank 21 central point puts and is fixed with flow distribution box 25, flow distribution box 25 top evenly is connected with shunt tubes 24, and shunt tubes 24 is connected with inner tank 21, intake pipe 3 is connected with flow distribution box 25 bottom surface, processing jar 1 external fixation has outsourcing jar 22, and outsourcing jar 22 bottom is located inner tank 21 below, intercommunication mouth 23 has evenly been seted up to the bottom at inner tank 21 edge, and intercommunication mouth 23 and outsourcing jar 22 intercommunication, be fixed with infiltration net 26 for intercommunication mouth 23 top between outsourcing jar 22 and the processing jar 1, back flow 10 is connected in the top that outsourcing jar 22 is located infiltration net 26.

Waste gas is inside through the leading-in reposition of redundant personnel box 25 of intake pipe 3, waste gas evenly gets into leading-in inner tank 21 in each shunt tubes 24 again inside, and the inside water that has held of inner tank 21, waste gas forms the bubble of even fineness and water fully contact in the aquatic, upwards emit again, guarantee the perpendicular even transport that makes progress of water after the preliminary treatment, avoid forming the combination of irregular air current disturbance to nanometer microbubble, and the gas that the persistence feeds forms "boiling" form in the aquatic, will upwards blow off more moisture, the increase is to the moist effect of waste gas.

The gaseous great particulate matter of internal volume can be adsorbed in waste gas evenly gets into water, and inner tank 21 passes through intercommunication mouth 23 and outsourcing jar 22 intercommunication, by the trend of adsorbed granule directional downstream, and pass in intercommunication mouth 23 gets into outsourcing jar 22, avoid the interior more impurity influence preliminary treatment work of continuation work accumulation of inner tank 21, top encapsulation infiltration net 26 at outsourcing jar 22, it is relatively clean to make the moisture on infiltration net 26 upper portion, a work for microbubble mechanism 4, and the moisture doping of infiltration net 26 lower part has more foreign particles, the later stage can deposit and carry out unified processing, make things convenient for the maintenance in later stage.

The inner diameter of the shunt pipe 24 is 0.8cm-1cm, and the shunt pipe 24 is of a U-shaped structure, so that a plurality of uniform and fine air passages are formed at the air inlet part, and the waste gas can be fully contacted with the water. It should be noted that the U-shaped shunt tubes 24 are uniformly arranged on the top plate of the shunt box 25, and a honeycomb-shaped uniform arrangement can be adopted, so that the shunt effect is more uniform. In another embodiment, the shunt tubes 24 may be arranged in an arc-shaped structure, the U-shaped structure has an excellent effect of saving the space of the equipment and being easier to process, and compared with the shunt tubes 24 in an arc-shaped structure, the U-shaped structure has a slight disadvantage that the U-shaped structure may be easily blocked due to the deposition of the micro-particles in the long-term use process because the aperture of the shunt tubes 24 is small; but the more obvious advantage is that the U-shaped structure is easier to process, store, hoist and mount, so in a specific preferred embodiment we choose the shunt tubes 24 of U-shaped structure, and one end is arranged on the top plate of the shunt box 25 in honeycomb shape and the other end is submerged in the liquid level of the inner tank 21 under the working environment.

The height of the exhaust pipe 15 is larger than 15m, the diameters of the air guide pipe 12 and the communicating pipe 14 are 1200mm, and the air guide pipe 12, the air inlet pipe 3, the exhaust pipe 8 and the communicating pipe 14 are all connected through flange end plates.

In addition, the top height of outsourcing jar 22 is higher than the top height of inner tank 21, shunt tubes 24's tip is located the central point of inner tank 21 height and puts, and inner tank 21 and outsourcing jar 22 form the linker through intercommunication mouth 23 intercommunication, and the inside water capacity of inner tank 21 can directly perceived be judged to the liquid level of observing outsourcing jar 22, makes things convenient for the water supply in later stage, and shunt tubes 24 port position and intercommunication mouth 23 remain certain distance in addition, avoids shunt tubes 24 combustion gas to dive and passes intercommunication mouth 23 and follow the outside and discharge.

The treatment of the nano micro bubbles on the waste gas is the working core of the device, the traditional equipment adopts a downward spraying mode to contact swirling air, the invention adopts an inclined spraying mode to uniformly mix the upward waste gas, and the specific operation is as follows:

as shown in fig. 6, microbubble mechanism 4 includes ring pipe 41, microbubble shower nozzle 42, connecting pipe 43 and water pump 44, it is the undergauge structure that leaks hopper-shaped to handle 1 top, the outer wall cover at the undergauge position of handling jar 1 is equipped with ring pipe 41, ring pipe 41 surface evenly is connected with microbubble shower nozzle 42, inside microbubble shower nozzle 42 penetrated handling jar 1, and microbubble shower nozzle 42 is the slope installation of forty-five degrees downwards, ring pipe 41 is connected with connecting pipe 43, outsourcing jar 22 external fixation has water pump 44, and water pump 44's the end of intaking is connected in outsourcing jar 22 and is located the top that permeates net 26, connecting pipe 43 and water pump 44 drainage end are connected.

Water in the pretreatment mechanism 2 is driven by the water pump 44 to be sucked up, water is guided into the circular pipe 41 through the connecting pipe 43, and then is sprayed to generate uniform nano micro bubbles through the micro bubble spray head 42, the part of the treatment tank 1 close to the mixed flow fan 6 is in a reducing leak shape, so that upward air flow has the tendency of gathering and guiding, and the micro bubble spray head 42 which is uniformly inclined ensures uniform mixing of the nano micro bubbles and waste gas.

The gas-liquid interface formed by the bubbles in the water has the characteristic of easily accepting H + and OH < - >, and generally cations are easier to leave the gas-liquid interface than anions, so that the interface is always charged with negative charges. The already charged surface generally tends to adsorb counterions, especially high-valence counterions, in the medium, forming a stable electric double layer. The potential difference generated by the surface charge of the microbubbles is usually characterized by zeta potential, when the nano-microbubbles shrink in water, the charged ions are rapidly concentrated and enriched on a very narrow bubble interface, and a very high zeta potential value can be formed at the interface before the bubbles break;

at the moment of micro-bubble breakage, high-concentration ions accumulated on the interface release accumulated chemical energy at a moment due to the violent change of disappearance of the gas-liquid interface, and at the moment, a large amount of hydroxyl radicals can be generated through excitation. The hydroxyl radical has ultrahigh oxidation-reduction potential, the generated super-strong oxidation can degrade paint mist after the capture and mixed reaction and pollutants such as phenol and the like which are difficult to oxidize and decompose under normal organic conditions, the purification effect on gas is realized, and the schematic diagram of the potential change of the nano microbubbles is shown in fig. 11.

The microbubbles are destroyed in a very short time due to cavitation effect, instantaneously generate 4000k high temperature and 1800atm high pressure, release a large amount of hydroxyl and free radicals in water, and perform physical and chemical reactions of mechanical shearing, pyrolysis, free radical oxidation and supercritical water oxidation with captured organic gas to achieve the effect of decomposing and removing VOC gas, as shown in FIG. 10.

As shown in fig. 8, the micro-bubble sprayer 42 includes a spray pipe 421, a reducing groove 422, a first-stage reducing groove 423, a second-stage reducing groove 424, an open pipe 425, an expansion casing 426, and an air inlet pipe 427, the spray pipe 421 is fixedly connected to the circular pipe 41, the reducing groove 422, the first-stage reducing groove 423, and the second-stage expanding groove 424 are sequentially formed inside the spray pipe 421, a diameter ratio of the reducing groove 422, the first-stage reducing groove 423, and the second-stage expanding groove 424 is 1:2:4, the open pipe 425 is fixed to an end of the spray pipe 421, the expansion casing 426 is fixed to an outer wall of the spray pipe 421, the air inlet pipe 427 is equidistantly fixed inside the expansion casing 426, the air inlet pipe 427 is respectively communicated with the first-stage reducing groove 423 and the second-stage expanding groove 424, and the air inlet pipe 427 is obliquely.

The water in the ring pipe 41 is led into the reducing groove 422, the water pressure is larger due to the smaller diameter of the reducing groove 422, the high-pressure water enters the first-stage diameter expanding groove 423 to be expanded, meanwhile, the negative pressure leads the air inlet pipe 427 to lead the external air flow into the first-stage diameter expanding groove 423 to be mixed with the water for the first time, then the air-liquid mixture is led into the second-stage diameter expanding groove 424 to be expanded for the second time, the negative pressure leads the external air flow into the second-stage diameter expanding groove 424 to be mixed, so that the nano micro-bubbles are sprayed out through the open pipe 425.

As shown in fig. 9, the inner tank 21 is internally provided with a mixing device 17, the mixing device 17 includes a ring box 171, an impeller 172, a driven gear 173, an upper rack 174, a ring plate 175, a lower rack 176, a driving gear 177, a motor 178 and a seal box 179, the ring boxes 171 and 21 are fixedly connected, the top surface of the ring box 171 is provided with an impeller 172 at the corresponding position of the shunt tube 24 in a rotating way, a driven gear 173 is fixed at the bottom end of the impeller 172, a ring plate 175 is rotatably installed inside the ring box 171, an upper rack 174 is fixed on the top surface of the ring plate 175, the driven gear 173 is engaged with the upper rack 174, a motor 178 is installed on the bottom surface of the ring box 171, a driving gear 177 is fixed on the output shaft of the motor 178, the lower rack 176 is fixed on the bottom surface of the ring plate 175, the driving gear 177 is engaged with the lower rack 176, and the sealing box 179 is fixed on the bottom surface of the ring box 171 outside the motor 178.

Waste gas is sprayed into the inner tank 21 through the shunt pipe 24 to be mixed with water, the motor 178 is started to drive the driving gear 177 to rotate, the ring plate 175 drives the upper rack 174 to rotate through the meshing linkage of the lower rack 176, the impeller 172 rotates through the meshing linkage of the driven gear 173, and the waste gas which is just sprayed out is stirred by the impeller 172 due to the fact that the impeller 172 corresponds to the port position of the shunt pipe 24, so that finer bubbles are formed, and the mixing effect of the waste gas and the water is further improved.

As shown in fig. 5, a drainage device 5 is installed at the bottom of the outer tank 22, the drainage device 5 comprises a drainage pipe 51, a pipe cap 52 and a twist handle 53, the drainage pipe 51 is connected with the outer tank 22, the pipe cap 52 is installed at the end of the drainage pipe 51 in a threaded manner, and the twist handle 53 is fixed on the outer wall of the pipe cap 52.

Pile up more granule impurity in the outsourcing jar 22 after long-time gas treatment, need clear up, demolish through turning round handle 53 swivel nut 52, the inside waste liquid of inner tank 21 and outsourcing jar 22 is discharged through drain pipe 51 to pour into the clear water from outsourcing jar 22 top and erode, convenient clear up equipment.

Adopt the shunt tubes 24 conduction waste gas of U-shaped, because the contact of shunt tubes 24 tip and the inside water of inner tank 21, produce the suck-back situation easily when the shut down, adopt and prevent that reverse flow mechanism 9 will solve this problem, the concrete operation is as follows:

as shown in fig. 7, the end of intake pipe 3 is installed and is prevented mechanism 9 against current, prevent mechanism 9 against current including holding case 91, closure plate 92, support 93 and rubber circle 94, intake pipe 3 with hold case 91 intercommunication, the inside bottom surface of holding case 91 is fixed with support 93, and support 93 rotates through torsion spring elasticity and installs closure plate 92, closure plate 92 bottom surface is fixed with rubber circle 94, and the port structure cooperation of rubber circle 94 and intake pipe 3.

When the air intake device is stopped, the plug plate 92 is covered on the port of the air inlet pipe 3 through the elasticity of the torsion spring, and the air path is sealed due to the attachment of the rubber ring 94, so that the suck-back phenomenon is effectively avoided.

The invention also provides an organic waste gas treatment method, which comprises the following steps:

1) pretreatment: waste gas is guided into the flow distribution box 25 through the gas inlet pipe 3, then the waste gas forms a plurality of capillary gas paths through the flow distribution pipe 24 and is guided into the inner tank 21, the inner tank 21 contains water, and the waste gas forms uniform and fine bubbles in the water and then emerges;

2) processing nano micro bubbles: the pretreated waste gas rises inside, the micro-bubble mechanism 4 is started to conduct the water purification in the coating tank 22 into the circular pipe 41 through the connecting pipe 43, then a large amount of nano micro-bubbles are blown out by the micro-bubble nozzle 42, and the waste gas is mixed with the nano micro-bubbles;

3) mixing treatment: the waste gas with the nanometer micro bubbles is adsorbed by the mixed flow fan 6 to be fully mixed and reacted to form purified gas;

4) the purified gas after reaction with a large amount of water enters a dehydrator 7 for dehydration treatment, relatively clean gas is discharged through an exhaust pipe 8, and the recovered water is guided into an outer tank 22 through a return pipe 10.

Compared with a general organic waste gas treatment device, the main innovation point of the organic waste gas treatment device and method provided by the invention is the packaging box and the pretreatment mechanism and the micro-bubble mechanism inside the packaging box, and the working principle of the organic waste gas treatment device and method is described below to help the skilled person to further understand the invention, and the working principle is as follows: waste gas is led into the interior of the flow dividing box 25 through the gas inlet pipe 3, the waste gas uniformly enters the flow dividing pipes 24 and is led into the interior of the inner tank 21, water is contained in the interior of the inner tank 21, the waste gas forms uniform fine bubbles in the water to be fully contacted with the water and then upwards emits out, the water after pretreatment is ensured to be vertically and upwards uniformly conveyed, the combination of the irregular gas flow disturbance to nano micro bubbles is avoided, the gas fed continuously forms a boiling state in the water, more water is upwards blown out, the wetting effect to the waste gas is increased, the water in the pretreatment mechanism 2 is driven and sucked up through the water pump 44, the water is led into the ring pipe 41 through the connecting pipe 43 and is then sprayed out through the micro bubble spray nozzle 42 to emit uniform nano micro bubbles, the part of the treatment tank 1, which is close to the mixed flow fan 6, the upward gas flow has the tendency of gathering and guiding, and the micro bubble spray nozzle 42 which is uniformly and obliquely arranged ensures the uniform mixing of the nano micro, the mixed flow fan 6 is used for mixing gas and liquid to purify waste gas, the dehydrator 7 is used for guiding the water of the purified gas back to the inside of the pretreatment mechanism 2 through the return pipe 10, and the purified gas is discharged through the exhaust pipe 8.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (8)

1. An organic exhaust gas treatment device comprising: the device comprises a treatment tank (1), a washing tower (11), an air guide pipe (12), a centrifugal fan (13), a communicating pipe (14), an exhaust pipe (15), a packaging box (16), an air inlet pipe (3), a mixed flow fan (6), a dehydrator (7), an exhaust pipe (8) and a return pipe (10), wherein the top end of the washing tower (11) is connected with the air guide pipe (12), the bottom end of the air guide pipe (12) is provided with the packaging box (16), the top end of the packaging box (16) is provided with the communicating pipe (14), the side edge of the packaging box (16) is provided with the exhaust pipe (15), the bottom end of the exhaust pipe (15) is provided with the centrifugal fan (13), the communicating pipe (14) is connected with the centrifugal fan (13), and the treatment tank is characterized in that the treatment tank (1) is arranged inside the packaging box (16), the bottom of the treatment tank (1), the central position of the pretreatment mechanism (2) is connected with an air inlet pipe (3), the air inlet pipe (3) is connected with an air guide pipe (12), the top end of the treatment tank (1) is fixedly provided with a mixed flow fan (6), the exhaust end of the mixed flow fan (6) is connected with a dehydrator (7), the drainage end of the dehydrator (7) is connected with a return pipe (10), the return pipe (10) is connected with the pretreatment mechanism (2), the exhaust end of the dehydrator (7) is connected with an exhaust pipe (8), the exhaust pipe (8) is connected with a communicating pipe (14), a multi-direction nanometer bubble spraying mechanism (4) is arranged outside the treatment tank (1), and the micro bubble spraying mechanism (4) is respectively connected with the pretreatment mechanism (2) and the treatment tank (1);

the pretreatment mechanism (2) comprises an inner tank (21), an outer tank (22), a communication port (23), a shunt pipe (24), a shunt box (25) and a permeation net (26), the inner tank (21) is fixed at the bottom end inside the treatment tank (1), the inner tank (21) is hollow, the shunt box (25) is fixed at the central position of the inner tank (21), the shunt pipe (24) is evenly connected to the top of the shunt box (25), the shunt pipe (24) is connected with the inner tank (21), the air inlet pipe (3) is connected with the bottom surface of the shunt box (25), the outer tank (22) is fixed outside the treatment tank (1), the bottom of the outer tank (22) is located below the inner tank (21), the communication port (23) is evenly arranged at the bottom end of the edge of the inner tank (21), the communication port (23) is communicated with the outer tank (22), the permeation net (26) is fixed above the communication port (23) between the outer tank (22) and the treatment tank (1), the return pipe (10) is connected with the outsourcing tank (22) and is positioned above the infiltration net (26);

microbubble mechanism (4) are including ring pipe (41), microbubble shower nozzle (42), connecting pipe (43) and water pump (44), it is funnel-shaped undergauge structure to handle jar (1) top, the outer wall cover at the undergauge position of handling jar (1) is equipped with ring pipe (41), ring pipe (41) surface evenly is connected with microbubble shower nozzle (42), microbubble shower nozzle (42) penetrate and handle jar (1) inside, and microbubble shower nozzle (42) are the installation of forty-five degrees slopes downwards, ring pipe (41) are connected with connecting pipe (43), outer package jar (22) external fixation has water pump (44), and the end of intaking of water pump (44) is connected in the top that outer package jar (22) are located infiltration net (26), connecting pipe (43) are connected with water pump (44) drainage end.

2. The organic waste gas treatment device according to claim 1, wherein the inner diameter of the shunt pipe (24) is 0.8cm-1cm, the shunt pipe (24) is of a U-shaped structure, the height of the exhaust pipe (15) is greater than 15m, the diameters of the air guide pipe (12) and the communicating pipe (14) are 1200mm, and the air guide pipe (12), the air inlet pipe (3), the exhaust pipe (8) and the communicating pipe (14) are connected through flange end plates.

3. The organic waste gas treatment apparatus according to claim 2, wherein the outer tank (22) has a top height higher than that of the inner tank (21), and the ends of the bypass pipes (24) are located at the center of the height of the inner tank (21).

4. The organic waste gas treatment device according to claim 1, wherein a mixing device (17) is installed inside the inner tank (21), the mixing device (17) comprises a ring box (171), an impeller (172), a driven gear (173), an upper rack (174), a ring plate (175), a lower rack (176), a driving gear (177), a motor (178) and a sealing box (179), the ring box (171) is fixedly connected with the inner tank (21), the impeller (172) is rotatably installed at the position, corresponding to the shunt pipe (24), on the top surface of the ring box (171), the driven gear (173) is fixed at the bottom end of the impeller (172), the ring plate (175) is rotatably installed inside the ring box (171), the upper rack (174) is fixed on the top surface of the ring plate (175), the driven gear (173) is meshed with the upper rack (174), the motor (178) is installed on the bottom surface of the ring box (171), a driving gear (177) is fixed on an output shaft of the motor (178), a lower rack (176) is fixed on the bottom surface of the ring plate (175), the driving gear (177) is meshed with the lower rack (176), and a sealing box (179) is fixed on the bottom surface of the ring box (171) and located outside the motor (178).

5. The organic waste gas treatment device according to claim 1, wherein the micro-bubble nozzle (42) comprises a nozzle (421), a reducing groove (422), a first-stage expanding groove (423), a second-stage expanding groove (424), an open pipe (425), an expanding casing (426) and an air inlet pipe (427), the nozzle (421) is fixedly connected with the circular pipe (41), the inside of the nozzle (421) is sequentially provided with the reducing groove (422), the first-stage expanding groove (423) and the second-stage expanding groove (424), the diameter ratio of the reducing groove (422), the first-stage expanding groove (423) and the second-stage expanding groove (424) is 1:2:4, the end of the nozzle (421) is fixed with the open pipe (425), the outer wall of the nozzle (421) is fixed with the expanding casing (426), the inside of the expanding casing (426) is equidistantly fixed with the air inlet pipe (427), and the air inlet pipe (427) is respectively communicated with the first-stage expanding groove (423) and the second-stage expanding groove (424), the air inlet pipe (427) is arranged in an inclined shape.

6. The organic waste gas treatment device according to claim 1, wherein a drainage device (5) is installed at the bottom of the outer packing tank (22), the drainage device (5) comprises a drainage pipe (51), a pipe cap (52) and a twist handle (53), the drainage pipe (51) is connected with the outer packing tank (22), the end of the drainage pipe (51) is provided with the pipe cap (52) in a threaded manner, and the twist handle (53) is fixed on the outer wall of the pipe cap (52).

7. The organic waste gas treatment device according to claim 1, wherein the end of the gas inlet pipe (3) is provided with a reverse flow prevention mechanism (9), the reverse flow prevention mechanism (9) comprises a containing box (91), a blocking plate (92), a support (93) and a rubber ring (94), the gas inlet pipe (3) is communicated with the containing box (91), the support (93) is fixed on the bottom surface of the inside of the containing box (91), the blocking plate (92) is elastically and rotatably arranged on the support (93) through a torsion spring, the rubber ring (94) is fixed on the bottom surface of the blocking plate (92), and the rubber ring (94) is matched with a port structure of the gas inlet pipe (3).

8. An organic exhaust gas treatment method based on the organic exhaust gas treatment device according to any one of claims 1 to 7, comprising the steps of:

1) pretreatment: waste gas is guided into the flow distribution box (25) through the gas inlet pipe (3), then the waste gas forms a plurality of capillary gas paths through the flow distribution pipe (24) and is guided into the inner tank (21), water is contained in the inner tank (21), and the waste gas is emitted from bubbles which are uniformly fine and formed in the water;

2) processing nano micro bubbles: the pretreated waste gas rises inside, a micro-bubble mechanism (4) is started to conduct water purification in the outer coating tank (22) into the circular pipe (41) through a connecting pipe (43), a large amount of nano micro-bubbles are blown out by a micro-bubble nozzle (42), and the waste gas and the nano micro-bubbles are mixed;

3) mixing treatment: the waste gas with the nanometer micro bubbles is adsorbed by a mixed flow fan (6) and fully mixed and reacted to form purified gas;

4) the purified gas after reaction with a large amount of water enters a dehydrator (7) for dehydration treatment, relatively clean gas is discharged through an exhaust pipe (8), and the recovered water is introduced into an outer packing tank (22) through a return pipe (10).

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