A modular and replaceable exhaust gas treatment device

Abstract

The invention relates to a modular replaceable waste gas treatment device applied to the technical field of waste gas treatment devices, comprising components such as an end cover, an impeller, a deacidification cylinder, a quenching cylinder, a separation ring, a collecting ring, a condensation ring and a liquid collecting ring. Driven by a motor, the device rotates at high speed to generate a supergravity field, which significantly enhances the gas-liquid two-phase mass transfer and heat transfer effect. The waste gas enters through an air inlet pipe, is fully contacted and reacted with an atomized treatment liquid, and is discharged through an exhaust pipe. The mixture is separated in steps in the separation ring, the heavy phase material is discharged through the collecting ring, and the light phase material enters the next-stage separation ring. The evaporation separation cylinder utilizes the waste heat of the waste gas to evaporate the crystallization mother liquor, and the crystals are recovered. The condensed water flows back to the deacidification cylinder through the liquid collecting ring and a one-way valve for recycling. The baffle and the baffle ring enhance the turbulent mixing of gas and liquid, and the confluence buffer ring intercepts the entrained water. The invention has high purification efficiency, modular components for easy maintenance, low material consumption and energy consumption, integrated pollutant removal and resource recovery, and significant environmental and economic benefits.

Description

Technical Field

[0001] The present invention relates to a modular replaceable exhaust gas treatment device, and in particular to a modular replaceable exhaust gas treatment device applied in the technical field of exhaust gas treatment devices. Background Art

[0002] The process of waste incineration will produce a large amount of flue gas containing toxic and harmful substances such as acidic gases, heavy metals, and dioxins, which must undergo strict purification treatment before they can meet emission standards. At present, the commonly used waste incineration boiler flue gas treatment process adopts dry, semi-dry or wet deacidification process to remove acidic gases such as HCl, SO2, HF, etc. in the flue gas, and adopts electrostatic precipitator or bag filter to remove dust particles in the flue gas, including heavy metal oxides. Selective catalytic reduction (SCR) or selective non-catalytic reduction (SNCR) process is used to reduce and remove nitrogen oxides (NOx) in the flue gas at 250-400℃. Activated carbon powder is sprayed to adsorb dioxins, heavy metals, organic matter, etc. in the flue gas. Alkali liquid spray tower is used to further remove acidic gases and heavy metals, and the flue gas is cooled to below 80℃. A demister is used to remove wastewater droplets generated by the scrubber to reduce the water entrained in the flue gas. The purified wet flue gas is heated to 120-140℃ to increase the chimney outlet temperature to avoid condensation and plume droop. After the above purification process, the pollutant concentration in the flue gas discharged by the waste incineration boiler can be greatly reduced, and generally can stably meet the relevant national and local emission standards. At the same time, the fly ash, wastewater, etc. generated are expected to be disposed of harmlessly or utilized as resources, minimizing the risk of secondary pollution from garbage incineration.

[0003] Chinese invention patent CN104896488B discloses a system for treating waste gas from garbage incineration, which uses thermal ionization and plasma technology to purify waste gas at 800-1000℃, with a treatment capacity of 80,000-150,000m³ / h. However, the system has high energy consumption, complex equipment, high operating costs, and lacks effective recycling measures for waste liquid.

[0004] Chinese invention patent CN109603497B discloses a waste incineration waste gas deacidification treatment system, which uses waste gas waste heat to heat tap water and pre-cool the waste gas. However, its heat dissipation and deacidification effects are limited, and it is difficult to adapt to the treatment needs of high-concentration, multi-component waste gas. In addition, waste liquid treatment and resource recovery are also insufficient, and there is a risk of secondary pollution.

[0005] The above patent achieves waste gas purification through technologies such as thermal ionization, plasma and waste heat utilization, but it has high energy consumption and cost, and waste liquid treatment and resource recovery are not ideal, making it difficult to meet the increasingly stringent energy conservation, emission reduction and clean production requirements. Summary of the invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is how to solve the problems of high energy consumption, high cost, low efficiency, insufficient utilization of waste liquid and waste heat, etc. of the existing industrial waste gas purification devices.

[0007] To solve the above problems, the present invention provides a modular and replaceable waste gas treatment device, including an end cover, an impeller is rotatably connected to the bottom end of the end cover, a deacidification cylinder is fixedly connected to the bottom end of the impeller, a quenching cylinder is fixedly connected to the bottom end of the deacidification cylinder, a primary separation ring and a secondary separation ring are fixedly connected to the outer wall of the deacidification cylinder, an evaporation separation cylinder is fixedly connected to the outer wall of the quenching cylinder, a primary collection ring, a secondary collection ring and an evaporation collection ring are respectively provided at the bottom ends of the primary separation ring, the secondary separation ring and the evaporation separation cylinder, a motor is fixedly connected to the top end of the end cover, a power shaft of the motor passes through the end cover, and a rotating shaft is fixedly connected to the passing part, the rotating shaft is fixedly connected to the impeller, the deacidification cylinder is a hollow structure, a liquid inlet pipe is fixedly connected to the motor rotating shaft, the bottom end of the liquid inlet pipe is connected to the hollow part of the deacidification cylinder, and a plurality of nozzles are fixedly connected to the inner wall of the deacidification cylinder.

[0008] In the above-mentioned modular replaceable waste gas treatment device, the device utilizes the supergravity field generated by the rotating device to significantly enhance the mass and heat transfer effects between the waste gas and the treatment liquid. While improving the purification efficiency, it realizes the step-by-step separation and resource utilization of pollutants through multi-stage separation and evaporation crystallization processes, and makes full use of the waste heat of the waste gas to realize the recovery and reuse of water and heat. In addition, the device adopts a modular component design, which is convenient for disassembly and maintenance and functional upgrades, greatly prolongs the service life and reduces the cost of use. The device of the present invention is suitable for the integrated purification treatment of high-concentration, multi-component, and difficult-to-degrade industrial waste gas. It has the characteristics of waste gas emission meeting the standards, waste liquid resource utilization, energy step-by-step utilization, compact and efficient equipment, etc., and the environmental and economic benefits are very significant.

[0009] As a further improvement of the present application, multiple nozzles are connected to the hollow part of the inner wall of the deacidification cylinder, the outer wall of the end cover located between the deacidification cylinder and the quenching cylinder is fixedly connected with multiple baffles, and the outer end of the end cover is fixedly connected with an exhaust pipe.

[0010] As a further improvement of the present application, the inner walls of the deacidification cylinder and the quenching cylinder located between two adjacent baffles are fixedly connected with a baffle ring that cooperates with the baffle.

[0011] As a further improvement of the present application, the bottom ends of the primary separation ring, the secondary separation ring and the evaporation separation cylinder are respectively connected to the interior of the primary collection ring, the secondary collection ring and the evaporation collection ring through the heavy phase tube, and the corresponding positions of the primary collection ring, the secondary collection ring and the evaporation collection ring and the heavy phase tube are provided with openings that cooperate with the heavy phase tube, so that the heavy phase tube can rotate inside the primary collection ring, the secondary collection ring and the evaporation collection ring.

[0012] As another improvement of the present application, the outer ends of the primary collecting ring, the secondary collecting ring and the evaporation collecting ring are fixedly connected to the same bracket, and the top of the bracket is fixedly connected to the outer wall of the end cover, and the primary collecting ring, the secondary collecting ring and the evaporation collecting ring are fixedly connected to the external collecting equipment through pipes.

[0013] As another improved supplement of the present application, the interior of the primary separation ring and the interior of the secondary separation ring, as well as the interior of the evaporation separation cylinder inside the secondary separation ring and the position near the bottom end of the evaporation separation cylinder are all connected through multiple light phase tubes.

[0014] As another improved supplement of the present application, the distance from the light phase tube to the axis of the end cover is smaller than the distance from the heavy phase tube to the axis of the end cover.

[0015] As another improvement of the present application, a liquid collecting ring is fixedly connected to the outer wall of the quenching cylinder near its top end. The liquid collecting ring is a conical structure, and the end of the conical structure with a larger diameter is arranged upward.

[0016] A condensation ring is clamped between the top of the liquid collecting ring and the inner wall of the top of the evaporation separation cylinder. A plurality of one-way valves are provided on the inner wall of the liquid collecting ring near its bottom. The plurality of one-way valves are fixedly connected to the deacidification cylinder, and the ends of the plurality of one-way valves away from the liquid collecting ring are connected to the hollow part of the deacidification cylinder.

[0017] The bottom end of the quenching cylinder is rotatably connected with an air inlet pipe, which is fixedly connected to the bracket. A confluence buffer ring is fixedly connected between the outer wall of the impeller and the inner wall of the end cover. The confluence buffer ring is made of porous material and is used to intercept moisture in the gas.

[0018] In summary, this application has the following beneficial effects:

[0019] 1. This patent uses a rotating device to generate a supergravity field, which enhances the mass and heat transfer effect between the waste gas and the treatment liquid. The waste gas fully contacts and reacts with the atomized treatment liquid in the quenching cylinder and the deacidification cylinder, and the removal efficiency is improved. At the same time, the supergravity field accelerates the chemical reaction rate, further ensuring the purification performance. Compared with conventional tower equipment, this device has higher processing efficiency, smaller equipment size, and saves site space.

[0020] 2. This patent adopts a multi-stage separation ring design to achieve the step-by-step purification of waste liquid and the continuous separation of the mixture. The first-stage separation ring, the second-stage separation ring and the evaporation separation cylinder are arranged in sequence. Under the action of the supergravity field, the heavy phase material in the mixture settles quickly and is discharged from the heavy phase pipe, and the light phase material enters the next stage of separation ring through the light phase pipe for further processing. This layout ensures the separation effect, the obtained heavy phase material has a higher purity, reduces the subsequent processing load, and saves disposal costs.

[0021] 3. The confluence buffer ring set between the end cover and the impeller is made of porous materials such as foam copper. It uses capillary action to capture and condense the water carried by the exhaust gas, reducing the risk of equipment corrosion and pollutant spillage caused by water droplets, and ensuring that the exhaust gas emissions meet the standards. At the same time, the condensed and recovered water can be directly added to the treatment liquid in the deacidification cylinder, realizing the recycling of wastewater and saving water resources.

[0022] 4. The liquid collecting ring and condensing ring arranged between the top of the quenching cylinder and the evaporation separation cylinder adopt a conical structure with a large top and a small bottom, which is conducive to the downward collection of the condensed liquid and the upward transfer of heat. The water vapor in the evaporation separation cylinder rises and condenses, and then collects on the inner wall of the liquid collecting ring, and finally flows back to the deacidification cylinder through the one-way valve, realizing the recycling of condensed water. At the same time, the heat carried by the high-temperature exhaust gas is transferred to the evaporation separation cylinder through the wall of the quenching cylinder, which promotes the evaporation and concentration of the crystallization mother liquor and improves the precipitation and recovery efficiency of the solute.

[0023] 5. The light phase tube is arranged inside the heavy phase tube, closer to the axis of rotation. This unique design reduces the radial migration resistance of the light phase material under the centrifugal field, further ensuring the efficient separation of the light and heavy phases. In addition, the light phase tube connects the lower part of the evaporation separation cylinder with the secondary separation ring, and uses the stripping effect generated by the evaporation of the crystallization mother liquor to form a circulating flow in the evaporation separation cylinder that enhances mass and heat transfer, further improving the purification and recovery performance of the device.

[0024] 6. The baffles and baffle rings arranged between the outer wall of the end cover and the deacidification cylinder and the quenching cylinder force the flow direction of the gas-liquid mixture to turn multiple times, strengthen the two-phase turbulent mixing effect, and extend the residence time of the exhaust gas in the device, thereby improving the purification efficiency and processing capacity.

[0025] 7. The whole device adopts modular component design. Each functional unit can be disassembled and replaced independently, and maintenance is very convenient. The key components and wearing parts are optimized and made of corrosion-resistant, wear-resistant and high-temperature-resistant materials. The service life of the device is increased, the maintenance cost is reduced, and the long-term stable operation of the device is ensured.

[0026] 8. The process flow of this patent is compact and reasonable, with integrated pollutant removal and resource recycling, and lower material and energy consumption. In particular, the waste heat of the waste gas is used to achieve the evaporation and concentration of the crystallization mother liquor and the recycling and reuse of water, realizing the cascade utilization of energy, and has good environmental protection and energy-saving and emission reduction effects. The device is particularly suitable for the purification and treatment of high-concentration, multi-component, and difficult-to-degrade industrial waste gas, and achieves standard emission of waste gas and resource utilization of waste liquid through integrated design. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is the overall structure diagram of this application;

[0028] Figure 2 This is the front view of the application;

[0029] Figure 3 For this application Figure 2 Middle AA section view;

[0030] Figure 4 This is an overall exploded view of this application;

[0031] Figure 5 Partial explosion for this application Figure 1 ;

[0032] Figure 6 Partial explosion for this application Figure 2 ;

[0033] Figure 7 Partial explosion for this application Figure 3 ;

[0034] Figure 8 Partial explosion for this application Figure 4 ;

[0035] Fig. 9 Partial explosion for this application Figure 5 ;

[0036] Fig.10 This is the appearance structure diagram of this application;

[0037] Fig.11 This is the usage status diagram of this application.

[0038] Description of the numbers in the figure:

[0039] 1. End cover; 2. Impeller; 3. Deacidification cylinder; 4. Quenching cylinder; 5. Primary separation ring; 6. Secondary separation ring; 7. Evaporation separation cylinder; 8. Primary collecting ring; 9. Secondary collecting ring; 10. Evaporation collecting ring; 11. Rotating shaft; 12. Liquid inlet pipe; 13. Baffle; 14. Heavy phase pipe; 15. Light phase pipe; 16. Liquid collecting ring; 17. Condensation ring; 18. One-way valve; 19. Inlet pipe; 20. Converging buffer ring. DETAILED DESCRIPTION

[0040] Four implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0041] Embodiment 1:

[0042] Figure 1-Figure 11 As shown, this embodiment provides a modular replaceable exhaust gas treatment device, such as Figure 1As shown, it includes an end cover 1, an impeller 2, a deacidification cylinder 3, a quenching cylinder 4, a primary separation ring 5, a secondary separation ring 6, an evaporation separation cylinder 7, a primary collecting ring 8, a secondary collecting ring 9, an evaporation collecting ring 10, a rotating shaft 11, a liquid inlet pipe 12, a heavy phase pipe 14, an air inlet pipe 19, a confluence buffer ring 20 and a motor.

[0043] The end cover 1 is cylindrical, and an impeller 2 is rotatably connected to the inner center of its bottom end. The impeller 2 is made of stainless steel material and is disc-shaped, and a hollow cylindrical deacidification cylinder 3 is fixedly connected to the center of its bottom end. A cylindrical quenching cylinder 4 is coaxially fixedly connected to the bottom end of the deacidification cylinder 3, and the diameter of the quenching cylinder 4 is larger than the deacidification cylinder 3. The outer wall of the deacidification cylinder 3 is fixedly connected with a primary separation ring 5 and a secondary separation ring 6 from top to bottom in sequence. The separation rings are all in the shape of a circular ring, and the secondary separation ring 6 is located below the primary separation ring 5. A cylindrical evaporation separation cylinder 7 is fixedly connected to the outer wall of the quenching cylinder 4, and its inner diameter is larger than the outer diameter of the quenching cylinder 4. A primary collecting ring 8, a secondary collecting ring 9 and an evaporation collecting ring 10 are respectively provided at the bottom ends of the primary separation ring 5, the secondary separation ring 6 and the evaporation separation cylinder 7, and the three collecting rings are all in the shape of a circular ring, and the secondary collecting ring 9 is located between the primary collecting ring 8 and the evaporation collecting ring 10.

[0044] A motor is fixedly connected at the center of the top of the end cover 1, and the power output shaft of the motor passes through the end cover 1 and extends to the inside thereof, and is fixedly connected to the top of the rotating shaft 11. The bottom end of the rotating shaft 11 is fixedly connected to the center of the top surface of the impeller 2. A hollow cylindrical liquid inlet pipe 12 is provided inside the motor rotating shaft, and the bottom end of the liquid inlet pipe 12 is connected to the hollow part of the deacidification cylinder 3. A plurality of nozzles are fixedly connected to the inner wall of the deacidification cylinder 3, which are evenly distributed in the circumferential and axial directions of the deacidification cylinder 3.

[0045] The bottom ends of the primary separation ring 5, the secondary separation ring 6 and the evaporation separation cylinder 7 are respectively connected to the interior of the primary collection ring 8, the secondary collection ring 9 and the evaporation collection ring 10 through a plurality of circular tubular heavy phase tubes 14. The primary collection ring 8, the secondary collection ring 9 and the evaporation collection ring 10 are provided with circular openings at the connection with the heavy phase tube 14, and the opening diameter is the same as the outer diameter of the heavy phase tube 14, so that the heavy phase tube 14 can rotate in the collection ring.

[0046] The outer ends of the primary collecting ring 8, the secondary collecting ring 9 and the evaporation collecting ring 10 are fixedly connected to a circular ring bracket, and the top of the bracket is fixedly connected to the outer wall of the end cover 1. The primary collecting ring 8, the secondary collecting ring 9 and the evaporation collecting ring 10 are all provided with pipelines connected to external collecting equipment for conveying the separated and collected substances to the collecting equipment.

[0047] The bottom end of the quenching cylinder 4 is connected to the air inlet pipe 19 through a rotating joint, and the other end of the air inlet pipe 19 is fixedly connected to the bracket. A circular confluence buffer ring 20 is filled between the outer wall of the impeller 2 and the inner wall of the end cover 1. The confluence buffer ring 20 is made of porous materials such as foam copper and is used to collect and condense moisture in the gas.

[0048] When working, the air inlet pipe 19 is fixedly connected to the boiler exhaust port, and the motor is started to drive the rotating shaft 11 to rotate, thereby driving the impeller 2, the deacidification cylinder 3, the quenching cylinder 4, the primary separation ring 5, the secondary separation ring 6, and the evaporation separation cylinder 7 to rotate synchronously at high speed. The rotation of the impeller 2 generates negative pressure, and the waste gas to be treated is drawn into the device from the air inlet pipe 19. At the same time, the high-speed rotating cylinders and separation rings generate a strong supergravity field.

[0049] The treatment liquid is pumped into the hollow cavity of the deacidification cylinder 3 through the liquid inlet pipe 12. Under the dual effects of negative pressure and super gravity, the treatment liquid is sprayed out from the nozzle on the inner wall at high speed, atomized into fine droplets, fully mixed and contacted with the waste gas, and physical and chemical reactions occur. The waste gas flows through the quenching cylinder 4 and the inner wall of the deacidification cylinder 3 in turn, and is finally discharged from the end cover 1 under the action of the impeller 2 to complete the purification treatment.

[0050] When the mixture generated by the reaction of the waste gas and the treatment liquid passes through the confluence buffer ring 20, the moisture in the gas is condensed and gathered, and flows into the primary separation ring 5 along the inner wall of the confluence buffer ring 20. Under the action of the supergravity field, the mixture is separated in the primary separation ring 5, the heavy phase component enters the primary collection ring 8 through the heavy phase pipe 14, and the light phase component enters the secondary separation ring 6 for further separation. The heavy phase separated by the secondary separation ring 6 enters the secondary collection ring 9, and the light phase enters the evaporation separation cylinder 7.

[0051] The heat carried by the high-temperature exhaust gas is transferred to the evaporation separation cylinder 7 through the wall of the quench cylinder 4, causing the treatment liquid to evaporate and the solute to precipitate and crystallize. The crystals and liquid are discharged to the evaporation collection ring 10 through the heavy phase pipe 14. The separated heavy phase material is transported by the collection ring through the pipeline for recycling or secondary treatment.

[0052] The exhaust gas treatment device provided in this embodiment significantly enhances the mass and heat transfer effects between the exhaust gas and the treatment liquid through the hypergravity field generated by rotation, thereby greatly improving the exhaust gas purification efficiency and the utilization rate of the treatment liquid.

[0053] The device adopts a modular design, and each functional unit is assembled through standardized connectors, which is easy to disassemble, replace and maintain, thereby increasing the service life of the device and reducing operating costs.

[0054] The device is equipped with multi-stage separation rings, which can realize the step-by-step separation of the mixture, and the recovered substances are of high purity, reducing the downstream processing load.

[0055] The confluence buffer ring uses the capillary action of porous materials to collect condensed water, reducing water vapor entrainment and improving the exhaust emission quality.

[0056] The liquid inlet pipe 12 and the nozzle arrangement can realize uniform atomization spraying of the treatment liquid and enhance the gas-liquid contact effect. The rotary air intake is more conducive to uniform distribution of the exhaust gas and reduces local deviation.

[0057] Embodiment 2:

[0058] Figure 1-Figure 11 It is shown that, based on Example 1, this embodiment provides a modular and replaceable exhaust gas treatment device.

[0059] Multiple nozzles evenly distributed on the inner wall of the deacidification cylinder 3 are connected to the inner hollow cavity of the deacidification cylinder 3 through a connecting pipe, and the treatment liquid can be pumped into the nozzle through the connecting pipe from the hollow cavity of the deacidification cylinder 3 and sprayed out. The connecting pipe is made of corrosion-resistant material, and the pipe diameter is optimized according to the treatment liquid flow rate and the number of nozzles.

[0060] A plurality of baffles 13 are fixedly connected to the outer wall of the end cover 1 between the deacidification cylinder 3 and the quenching cylinder 4 at equal intervals in the circumferential direction. The baffles 13 are made of arc-shaped steel plates, and their two ends are tangent to the outer wall of the end cover 1 and the outer wall of the quenching cylinder 4 respectively, and the inner concave surface of the baffles 13 faces the rotation axis. A circular tubular exhaust pipe is also fixedly connected to the outer end of the end cover 1, which is connected to the internal space of the end cover 1 and is used to discharge the purified waste gas.

[0061] The inner walls of the deacidification cylinder 3 and the quenching cylinder 4 are fixedly connected with a baffle ring in the area between two adjacent baffles 13. The two ends of the baffle ring are respectively tangent to the rear edges of the adjacent baffles 13 along the rotation direction. The baffle ring is coaxial with the deacidification cylinder 3 and the quenching cylinder 4, and the ring wall is parallel to the inner wall of the cylinder.

[0062] The inner wall of the primary separation ring 5 and the inner wall of the secondary separation ring 6, as well as the inner wall of the secondary separation ring 6 and the inner wall of the evaporation separation cylinder 7 near the bottom, are connected through a plurality of light phase tubes 15. The light phase tube 15 is made of polytetrafluoroethylene material, and its outer diameter is smaller than that of the heavy phase tube 14. The radial distance from the light phase tube 15 to the rotation axis is smaller than that from the heavy phase tube 14 to the axis.

[0063] During operation, driven by the motor, the end cover 1, the deacidification cylinder 3, the quenching cylinder 4 and the separation rings rotate at high speed, and the impeller 2 rotates inside the end cover 1 to generate negative pressure, and the waste gas is drawn into the device through the air inlet pipe 19. At the same time, the treatment liquid enters the nozzle in the deacidification cylinder 3 through the hollow rotating shaft 11, the liquid inlet pipe 12 and the connecting pipe under the action of the pump and is sprayed out, atomized into fine droplets, and fully mixed and contacted with the waste gas under the action of super gravity.

[0064] The mixture of waste gas and atomized treatment liquid flows through the quenching cylinder 4 and the deacidification cylinder 3 in sequence, and is guided by the baffle 13 and the baffle ring, and performs swirl motion along the cylinder wall, so that the contact reaction between the waste gas and the treatment liquid is more complete, and the heat and mass transfer effect is greatly enhanced. The purified waste gas is finally discharged through the exhaust pipe under the joint action of the impeller 2 and the end cover 1.

[0065] Under the action of the rotational inertia force, the heavy phase material in the mixture flows into the primary separation ring 5 along the cylinder wall, and the light phase material enters the secondary separation ring 6 along the light phase pipe 15 under the action of centrifugal force. The heavy phase material in the secondary separation ring 6 is discharged to the secondary collection ring 9 through the heavy phase pipe 14, and the light phase material enters the evaporation separation cylinder 7 again through the light phase pipe 15. The evaporation separation cylinder 7 uses the waste heat of the exhaust gas to evaporate the treatment liquid, and the solute crystallizes and precipitates, and is discharged to the evaporation collection ring 10 through the heavy phase pipe 14. The light phase component rises with evaporation and condenses into liquid reflux at the condensation ring 17.

[0066] The design of the nozzle being connected to the hollow cavity allows the treatment liquid to flexibly adjust the spray volume and nozzle position according to the working conditions, adapt to different exhaust gas components and concentrations, and optimize the atomization effect.

[0067] The baffle plate 13 and the matching baffle ring strengthen the swirl mixing of the exhaust gas and the treatment liquid, prolong the contact time of the two phases, have high mass and heat transfer efficiency, and small system size.

[0068] The multi-stage separation ring is used in conjunction with the heavy phase tube 14 and the light phase tube 15, which can effectively separate the mixture, prevent interphase cross-contamination, and significantly improve the processing capacity of the tower equipment.

[0069] The light phase pipe 15 is arranged on the inner side closer to the rotating shaft, which reduces the radial displacement resistance of the light phase material in the centrifugal field and is more conducive to the complete separation of the light and heavy phases.

[0070] The exhaust pipe is directly arranged on the end cover 1, which shortens the exhaust path of the purified gas, reduces the pressure loss, and reduces the power consumption of the fan.

[0071] The overall device adopts a modular assembly design, and the core components are made of corrosion-resistant and high-temperature resistant materials. The equipment has high strength, good sealing performance, is easy to maintain and replace, and has a long service life.

[0072] Embodiment 3:

[0073] Figure 1-Figure 11 It is shown that, based on Examples 1 and 2, this embodiment provides a modular replaceable exhaust gas treatment device. A liquid collecting ring 16 is fixedly connected to the outer wall of the quenching tube 4 near its top. The liquid collecting ring 16 is a hollow conical ring body made of stainless steel. The large diameter end of the conical structure faces upward, and the small diameter end is connected to the outer wall of the quenching tube 4. The liquid collecting ring 16 is used to collect the condensed liquid, and the conical design is conducive to the downward flow and collection of the condensed liquid.

[0074] A condensation ring 17 is detachably connected between the upper end surface of the liquid collecting ring 16 and the top inner wall of the evaporation separation cylinder 7. The condensation ring 17 is made of aluminum alloy material, and a fluororubber sealing ring is provided at the connection between the liquid collecting ring 16 and the evaporation separation cylinder 7, which has good sealing and thermal conductivity. The condensation ring 17 is used to condense and separate the evaporated water vapor.

[0075] Several one-way valves 18 are evenly distributed near the bottom of the inner wall of the liquid collecting ring 16. The one-way valve 18 is a stainless steel ball valve, and the ball is normally closed due to gravity. The inlet of the one-way valve 18 is connected to the liquid collecting ring 16, and the outlet is connected to the hollow cavity of the deacidification cylinder 3 through a connecting pipe. The one-way valve 18 allows the condensate to flow into the deacidification cylinder 3 in one direction, while preventing the gas and the treated liquid from entering the liquid collecting ring 16 in the reverse direction.

[0076] During operation, the exhaust gas enters the quenching tube 4 through the air inlet pipe 19 under the action of the impeller 2, fully contacts and reacts with the atomized treatment liquid, and the mixture spirally flows upward along the inner wall of the quenching tube 4. When the mixture flows through the liquid collecting ring 16, the inner wall of the ring directly contacts the airflow, and uses its own heat capacity to absorb part of the heat carried by the gas, so that the steam condenses into droplets. The conical structure allows the condensate to continuously gather downward and flow into the bottom of the liquid collecting ring 16.

[0077] The liquid in the evaporation separation cylinder 7 evaporates continuously under the effect of the waste heat of the exhaust gas, and the water vapor rises to the condensation ring 17, and condenses into liquid water after contacting its inner wall. The condensed water flows into the liquid collecting ring 16 along the inner wall of the condensation ring 17, and merges with the exhaust gas condensate. When the condensate in the liquid collecting ring 16 reaches a certain liquid level, the static pressure overcomes the deadweight of the ball valve of the one-way valve 18, and the condensate opens the ball valve and enters the connecting pipe, and finally flows back to the hollow cavity in the deacidification cylinder 3 to participate in the atomization spraying process of the next cycle.

[0078] The waste gas purified by the quenching cylinder 4 and the deacidification cylinder 3 enters the primary separation ring 5 and the secondary separation ring 6 for further separation and purification. The separated products are discharged through the primary collection ring 8, the secondary collection ring 9 and the evaporation collection ring 10, and finally the purified gas is discharged from the exhaust pipe.

[0079] The liquid collecting ring 16 uses its own heat capacity to recover the sensible heat of the exhaust gas, while promoting steam condensation and reducing water loss in the system. The conical design ensures efficient collection of condensate.

[0080] The condensation ring 17 utilizes the cold energy conducted by the wall of the evaporation separation cylinder 7 to enhance the condensation effect of water vapor, and the condensate is directly added to the liquid collecting ring 16, thereby simplifying the process flow.

[0081] A one-way valve 18 is arranged at the bottom of the liquid collecting ring 16, which only allows the condensate to enter the deacidification cylinder 3 without affecting the gas-liquid flow in the deacidification cylinder 3, thereby avoiding the risk of cross-contamination.

[0082] The condensate is directly reused for treating liquid atomization, which reduces the amount of fresh water and drainage, saves water resources and reduces operating costs.

[0083] The quenching cylinder 4, the evaporation separation cylinder 7 and the liquid collecting ring 16 are coaxially designed, and the supergravity field generated by the rotation is used to strengthen the heat and mass transfer process, so that the system has high processing efficiency.

[0084] Key components are made of high-quality corrosion-resistant materials and are equipped with replaceable sealing rings. The equipment has good sealing performance, no risk of waste liquid leakage, and the system is safe and reliable.

[0085] In summary, this embodiment makes full use of the heat of exhaust gas to achieve flash crystallization of materials and condensation recovery of solvents. The process flow is smooth, material and energy consumption are low, and the environmental and economic benefits are significant. It is particularly suitable for purification treatment of harsh exhaust gas environments such as high salt fog and high humidity.

[0086] Embodiment 4:

[0087] Figure 1-Figure 11 It is shown that, based on embodiments 1, 2 and 3, this embodiment provides a method for using a modular replaceable waste gas treatment device. The motor drives the rotating shaft 11 on the end cover 1 to rotate at high speed, driving the impeller 2, the deacidification cylinder 3, the quenching cylinder 4, the primary separation ring 5, the secondary separation ring 6, and the evaporation separation cylinder 7 coaxially fixedly connected thereto to rotate synchronously at high speed to form a supergravity field. The impeller 2 forms a negative pressure on the inner cavity of the end cover 1 during high-speed rotation, and draws the waste gas to be treated from the air inlet pipe 19 fixedly connected to the bracket into the quenching cylinder 4.

[0088] At the same time, the treatment liquid is pumped into the liquid inlet pipe 12 in the hollow rotating shaft 11, and then passes through the hollow cavity at the top of the deacidification cylinder 3. Under the dual effects of negative pressure and supergravity, it is ejected at high speed along multiple nozzles on the inner wall of the deacidification cylinder 3, atomized into fine droplets, and fully contacted and reacted with the exhaust gas.

[0089] After the waste gas and the atomized liquid strengthen the mass and heat transfer in the quenching cylinder 4, they enter the deacidification cylinder 3 and spirally rise along its inner wall. During this period, the baffle 13 fixed to the outer wall of the end cover 1 and the baffle ring matched therewith force the flow direction of the gas-liquid mixture to turn several times, further strengthening the two-phase mixing effect. The purified waste gas finally flows out along the axial direction of the end cover 1 under the action of the impeller 2 and is discharged from the device through the exhaust pipe.

[0090] After some liquid droplets carried by the exhaust gas enter the end cover 1, they are blocked by the confluence buffer ring 20 arranged between the outer edge of the impeller 2 and the inner wall of the end cover 1. The confluence buffer ring 20 is made of porous materials such as foam copper, and uses capillary action to condense and gather moisture in the gas, and finally flows into the primary separation ring 5 along the inner wall of the confluence buffer ring 20.

[0091] In the primary separation ring 5, the super gravity field causes the mixture to be rapidly separated, and the heavy phase material is discharged into the primary collection ring 8 through several heavy phase tubes 14 fixed at the bottom of the primary separation ring 5, while the light phase material enters the secondary separation ring 6 through the light phase tube 15 connected between the inner wall of the primary separation ring 5 and the inner wall of the secondary separation ring 6 under the action of centrifugal force. The sleeves of the heavy phase tube 14 and the light phase tube 15 are rotatably connected to the inner wall of the primary collection ring 8, and the radial positions of the two are staggered, and the light phase tube 15 is closer to the rotation axis. At the same time, the super gravity field significantly accelerates the chemical reaction rate between the treatment liquid and the pollutants in the exhaust gas.

[0092] The mixture in the secondary separation ring 6 is separated into layers again, the heavy phase is discharged into the secondary collection ring 9 through the heavy phase pipe 14, and the light phase is further discharged into the evaporation separation cylinder 7 along the light phase pipe 15 between the secondary separation ring 6 and the evaporation separation cylinder 7. Similarly, the super gravity field also greatly promotes the chemical reaction process in the secondary separation ring 6.

[0093] The high-temperature exhaust gas of the intake carries a large amount of heat, which is continuously conducted to the evaporation separation cylinder 7 along the wall of the quench cylinder 4, causing the water in the treated liquid to evaporate and the solute to precipitate and crystallize. The crystals and the concentrated liquid are discharged into the evaporation collection ring 10 through the heavy phase tube 14 at the lower end of the evaporation separation cylinder 7. The evaporated water vapor condenses in contact with the inner wall of the condensation ring 17 during the rising process, and the condensed water is collected along the inner wall of the liquid collecting ring 16 and refluxed to the hollow cavity in the deacidification cylinder 3 through the one-way valve 18 to replenish the atomization liquid and realize the closed-loop circulation of the material. It is worth noting that the lower part of the evaporation separation cylinder 7 is also provided with a light phase tube 15 connected to the secondary separation ring 6, so that the material in the cylinder can realize the circulation flow with enhanced mass transfer and heat transfer under the action of the evaporating gas.

[0094] During the operation of the device, the liquid collecting ring 16 and the condensing ring 17 adopt a conical structure with a large top and a small bottom, which is conducive to the downward flow of the condensate and the upward transfer of heat. At the same time, a baffle ring is provided between the deacidification cylinder 3 and the quenching cylinder 4, which cooperates with the baffle plate 13 to further strengthen the turbulent mixing of the gas-liquid two phases.

[0095] Finally, the heavy phase materials collected in the primary collection ring 8, the secondary collection ring 9 and the evaporation collection ring 10 are discharged continuously through the discharge pipe connected to them on the bracket and enter the subsequent resource utilization or harmless disposal process. At this point, the device completes a standard exhaust gas purification cycle.

[0096] The supergravity field generated by rotation is used to significantly enhance the mass and heat transfer effects between the exhaust gas and the treatment liquid, thereby improving the purification efficiency and the utilization rate of the treatment liquid.

[0097] The design of multi-stage separation rings realizes the step-by-step purification of waste liquid, and the output heavy phase material has higher purity, which reduces the subsequent processing load. At the same time, the promotion of chemical reaction rate by the ultra-gravity field further ensures the purification effect.

[0098] The confluence buffer ring 20 utilizes the capillary action of the porous material to condense and recover the moisture entrained in the exhaust gas, thereby reducing the risk of pollutant spillage.

[0099] The conical structural design of the condensation ring 17 and the liquid collecting ring 16 is conducive to the rapid collection of condensed water and the reverse transfer of heat, thereby improving the recovery and utilization efficiency of water and heat.

[0100] The light phase tube 15 is arranged on the inner side closer to the rotation axis than the heavy phase tube 14, which reduces the radial migration resistance of the light phase material under the action of the centrifugal field and ensures the efficient separation of the light and heavy phases.

[0101] The connection design between the lower part of the evaporation separation cylinder 7 and the secondary separation ring 6 utilizes the stripping effect of the evaporation of the crystallization mother liquor to achieve a cyclic flow that enhances mass and heat transfer, further improving the purification and recovery performance of the device.

[0102] The modular component design facilitates the disassembly, replacement and maintenance of each functional unit, especially the optimized selection of materials for wearing parts and the improvement of sealing forms, which greatly improves the service life and operational reliability of the device and reduces the cost of use.

[0103] The whole device has a compact layout, complete functions, integrated pollutant removal and resource recycling, lower material and energy consumption, and is particularly suitable for the purification of high-concentration, multi-component, and difficult-to-degrade industrial waste gas, with significant environmental and economic benefits.

[0104] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A modular and replaceable exhaust gas treatment device, characterized in that: The invention comprises an end cover (1), wherein the bottom end of the end cover (1) is internally rotatably connected to an impeller (2), the bottom end of the impeller (2) is fixedly connected to a deacidification cylinder (3), the bottom end of the deacidification cylinder (3) is fixedly connected to a quenching cylinder (4), the outer wall of the deacidification cylinder (3) is fixedly connected to a primary separation ring (5) and a secondary separation ring (6), the outer wall of the quenching cylinder (4) is fixedly connected to an evaporation separation cylinder (7), and the bottom ends of the primary separation ring (5), the secondary separation ring (6) and the evaporation separation cylinder (7) are respectively provided with a primary collecting ring ( 8), a secondary collecting ring (9) and an evaporation collecting ring (10), the top end of the end cover (1) is fixedly connected to a motor, the motor power shaft passes through the end cover (1), and the passing portion is fixedly connected to a rotating shaft (11), the rotating shaft (11) is fixedly connected to the impeller (2), the deacidification cylinder (3) is a hollow structure, a liquid inlet pipe (12) is fixedly connected inside the motor rotating shaft, the bottom end of the liquid inlet pipe (12) is connected to the hollow portion of the deacidification cylinder (3), and a plurality of nozzles are fixedly connected to the inner wall of the deacidification cylinder (3); The outer end of the end cover (1) is fixedly connected to an exhaust pipe, the bottom ends of the primary separation ring (5), the secondary separation ring (6) and the evaporation separation cylinder (7) are respectively connected to the inside of the primary collection ring (8), the secondary collection ring (9) and the evaporation collection ring (10) through a heavy phase tube (14), the inside of the primary separation ring (5) and the inside of the secondary separation ring (6), as well as the inside of the secondary separation ring (6) and the inside of the evaporation separation cylinder (7) near the bottom end of the evaporation separation cylinder (7) are all connected through a plurality of light phase tubes (15), and the bottom end of the quench cylinder (4) is rotatably connected to an air inlet pipe (19).

2. A modular replaceable exhaust gas treatment device according to claim 1, characterized in that: The plurality of nozzles are all connected to the hollow portion of the inner wall of the deacidification cylinder (3); the outer wall of the portion of the end cover (1) located between the deacidification cylinder (3) and the quenching cylinder (4) is fixedly connected to a plurality of baffles (13).

3. A modular replaceable exhaust gas treatment device according to claim 2, characterized in that: The inner walls of the deacidification cylinder (3) and the quenching cylinder (4) are fixedly connected to portions located between two adjacent baffles (13) with baffle rings that match the baffles (13).

4. A modular replaceable exhaust gas treatment device according to claim 1, characterized in that: The first-stage collecting ring (8), the second-stage collecting ring (9) and the evaporation collecting ring (10) are provided with openings matching the heavy phase tube (14) at positions corresponding to the heavy phase tube (14), so as to enable the heavy phase tube (14) to rotate within the first-stage collecting ring (8), the second-stage collecting ring (9) and the evaporation collecting ring (10).

5. A modular replaceable exhaust gas treatment device according to claim 1, characterized in that: The outer ends of the primary collecting ring (8), the secondary collecting ring (9) and the evaporation collecting ring (10) are fixedly connected to the same bracket, and the top end of the bracket is fixedly connected to the outer wall of the end cover (1); the primary collecting ring (8), the secondary collecting ring (9) and the evaporation collecting ring (10) are all fixedly connected to an external collecting device via a pipeline.

6. A modular replaceable exhaust gas treatment device according to claim 1, characterized in that: The distance between the light phase tube (15) and the axis of the end cover (1) is smaller than the distance between the heavy phase tube (14) and the axis of the end cover (1).

7. A modular replaceable exhaust gas treatment device according to claim 1, characterized in that: A liquid collecting ring (16) is fixedly connected to the outer wall of the quenching cylinder (4) near its top end. The liquid collecting ring (16) is a conical structure, and the end of the conical structure with a larger diameter is arranged upward.

8. A modular replaceable exhaust gas treatment device according to claim 7, characterized in that: A condensation ring (17) is clamped between the top of the liquid collecting ring (16) and the inner wall of the top of the evaporation separation cylinder (7). A plurality of one-way valves (18) are provided on the inner wall of the liquid collecting ring (16) near its bottom. The plurality of one-way valves (18) are fixedly connected to the deacidification cylinder (3), and the ends of the plurality of one-way valves (18) away from the liquid collecting ring (16) are all connected to the hollow portion of the deacidification cylinder (3).

9. A modular replaceable exhaust gas treatment device according to claim 1, characterized in that: The air inlet pipe (19) is fixedly connected to the bracket, and a flow-collecting buffer ring (20) is fixedly connected between the outer wall of the impeller (2) and the inner wall of the end cover (1). The flow-collecting buffer ring (20) is made of a porous material and is used to intercept moisture in the gas.

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