Exhaust gas purification equipment and intelligent printing exhaust gas waste heat utilization and advanced treatment equipment

Abstract

This invention relates to an exhaust gas purification device and an intelligent textile printing exhaust gas waste heat utilization and advanced treatment equipment, which includes a cycle water storage tank, a liquid cycle tank, a water filtration system connected to the cycle water storage tank, a bubble generator connected to the cycle water storage tank, and an organic exhaust gas removal device whose upper end is connected to the bubble generator and the liquid cycle tank and whose lower end is connected to the liquid cycle tank. The intelligent textile printing exhaust gas waste heat utilization and advanced treatment equipment includes a waste heat gradual utilization unit, a spray unit, a combined pulse electrostatic adsorption tower unit, a two-stage high-temperature water white smoke removal unit, and an exhaust unit, which are installed in sequence along the exhaust gas flow direction, and further includes an oil-water separation box, a sodium chloride electrolysis device, and the above-mentioned exhaust gas purification device. The exhaust gas purification device of the present invention can react and decompose organic pollutants dissolved in water. It also solves the problem of some bubbles adhering to the inner walls of the treatment device, greatly improving the purification efficiency of the device.

Description

[Technical Field]

[0001] The present invention relates to the technical field of textile printing exhaust gas treatment, and particularly to an exhaust gas purification device and intelligent textile printing exhaust gas waste heat utilization and advanced treatment equipment. [Background technology]

[0002] In the production process of the textile printing industry, high temperature conditions are required, for example, the set drying temperature is 210-230°C, so the generated exhaust gas also has a high temperature and a high oil content, about 400-600mg / m 3 In addition, such high-temperature exhaust gases contain a lot of fluff, impurities and deposits, and have a strong odor and bad smell, so that it is difficult to treat the high-temperature exhaust gases in the textile printing industry, and the chemical harmful substances such as dust particles in the high-temperature exhaust gases not only pollute the environment but also cause great harm to human health.

[0003] In the prior art, the treatment of high-temperature exhaust gases in the textile printing industry usually involves "water spraying + heat exchange cooling + electrostatic dust removal," but this method cannot fully meet the requirements of environmental protection. The equipment is prone to clogging and ignition, posing safety risks and not easy to maintain. The traditional treatment method does not fully remove the unpleasant odors and bad smells of the exhaust gases, does not purify the high-temperature exhaust gases efficiently, and does not fully utilize the residual heat of the high-temperature exhaust gases. Summary of the Invention [Problem to be solved by the invention]

[0004] Therefore, the present invention solves the above-mentioned problems of the prior art in terms of the technical problems to be solved, and provides an exhaust gas purification device and an intelligent printing exhaust gas waste heat utilization and treatment equipment, which realizes the step-by-step utilization of the waste heat of high-temperature exhaust gas in the textile printing industry and the combined elimination of nasty odors and bad smells, while also achieving strong capture of ultrafine particles, and also realizes operation with low energy consumption in combination with automated control. [Means for solving the problem]

[0005] In order to solve the above technical problems, the present invention provides an exhaust gas purification device, A cycle water tank, A liquid cycle tank; a water filtration system connected to the cycle water reservoir; a bubble generator connected to the cycle water storage tank; an organic exhaust gas removal device, the upper end of which is simultaneously connected to the bubble generating device and the liquid cycle tank, and the lower end of which is connected to the liquid cycle tank; The organic exhaust gas removal device includes a support base, a reaction tank is assembled on the upper end of the support base, a drive motor is assembled on the reaction tank, a first connection pipe and a second connection pipe are respectively assembled on the reaction tank, the first connection pipe is connected to the liquid cycle tank, the second connection pipe is connected to the bubble generator, the bottom of the reaction tank and the liquid cycle tank are connected via a third connection pipe, and an outlet pipe is assembled on the upper end of the reaction tank, a connecting shaft is coaxially installed on the output shaft of the driving motor, and a guide blade is provided on the connecting shaft, and an edge of the guide blade is tangent to the inner wall of the reaction tank; A fixing screw is installed in the reaction tank, and the fixing screw is installed at the upper end of the third connecting pipe. A small motor is installed between the fixing screw and the third connecting pipe. A bubble cleaning assembly is installed on the fixing screw. Two sets of spiral grooves are respectively opened on the connecting shaft on both the upper and lower sides of the guide blade, equidistant from the guide blade, and the bubble cleaning assembly slides in the spiral grooves.

[0006] Preferably, the bubble cleaning assembly includes a rotating block and a rotating frame, the rotating block is provided with an internal thread, the rotating block is assembled to the fixing screw via the internal thread, inner column cleaning pads are provided on the upper and lower planes of the rotating block, the rotating frame is rotatably assembled at the center of the side wall of the rotating block, two sets of sliding blocks are assembled to the rotating frame, the two sets of sliding blocks are slidably assembled within the two sets of spiral grooves respectively, a pair of brush blades are installed opposite each other inside the two sets of sliding blocks, and brushes are provided on the brush blades.

[0007] Preferably, an outer column cleaning pad is coaxially slidably fitted onto the connecting shaft, a rotating shaft is installed on the outer surface of the sliding block, a bidirectional telescopic device is slidably installed on the rotating shaft, and the bidirectional telescopic device is fitted onto the outer column cleaning pad.

[0008] Preferably, an exhaust port is provided at the upper end of the liquid cycle tank, and a water intake pump is assembled to the one end of the first connecting pipe that is connected to the liquid cycle tank.

[0009] In another aspect, the present invention further provides intelligent textile printing exhaust gas waste heat utilization and advanced treatment equipment, comprising a waste heat gradual utilization unit, a spray unit, a composite pulse electrostatic adsorption tower unit, a two-stage high-temperature water white smoke removal unit and an exhaust unit, which are installed in order along the flow direction of the exhaust gas, and further comprising an oil-water separation box, a sodium chloride electrolysis device and the above-mentioned exhaust gas purification device, wherein the oil-water separation box is respectively connected to the exhaust gas purification device, the sodium chloride electrolysis device, the composite pulse electrostatic adsorption tower unit and the waste heat gradual utilization unit, the sodium chloride electrolysis device is connected to the spray unit, and the exhaust gas purification device is respectively connected to the spray unit, the composite pulse electrostatic adsorption tower unit and the oil-water separation box.

[0010] Preferably, the spray unit includes a fine bubble water spray device, a hypohalous acid water spray device, and a sodium hydroxide water spray device, and the fine bubble water spray device is connected to the bubble generating device of the exhaust gas purification device via a first connecting pipe.

[0011] Preferably, the composite pulse electrostatic adsorption tower unit includes a first composite pulse electrostatic adsorption tower and a second composite pulse electrostatic adsorption tower connected to each other, an exhaust port of the first composite pulse electrostatic adsorption tower communicates with an inlet port of the second composite pulse electrostatic adsorption tower, and an outlet pipe of the exhaust gas purification device communicates with an inlet port of the second composite pulse electrostatic adsorption tower.

[0012] Preferably, the first liquid injection pipe of the exhaust gas purification device communicates with the oil-water separation box.

[0013] Preferably, the waste heat stepwise utilization unit includes a high temperature gas-gas heat exchanger, a medium temperature gas-water heat exchanger, and a low temperature gas-gas heat exchanger, which are installed in this order along the flow direction of the exhaust gas.

[0014] Preferably, the system further includes a plurality of automatic steam cleaning devices and automatic alkaline water cleaning devices, and the plurality of automatic steam cleaning devices and the plurality of automatic alkaline water cleaning devices are respectively installed in the waste heat step-by-step utilization unit and the composite pulse electrostatic adsorption tower unit.

[0015] Preferably, the system further includes a plurality of automatic fouling detection devices, each of which is installed in the waste heat stepwise utilization unit and the composite pulse electrostatic adsorption tower unit.

[0016] Preferably, the exhaust unit includes an exhaust pipe, and an exhaust device and a real-time gas monitoring device provided in the exhaust pipe. [Effects of the Invention]

[0017] The above technical solution of the present invention has the following advantages over the prior art: The exhaust gas purification device described in the present invention fully contacts low-concentration small-molecular-chain organic exhaust gases in the exhaust gas with high-concentration fine-bubble spray water, and generates dual physical and chemical processes, such as mechanical decomposition, thermal decomposition, and radical oxidation, to decompose and convert the small-molecular-chain organic pollutants in the exhaust gas into CO2, H2O, N2, and some solid particles. The exhaust gas purification device of the present invention also reacts and decomposes organic pollutants dissolved in water. It also solves the problem of some bubbles adhering to the inner walls of the treatment device, greatly improving the purification efficiency of the device. At the same time, the intelligent textile printing exhaust gas utilization and treatment equipment described in the present invention can realize the gradual utilization of residual heat from high-temperature exhaust gases in the textile printing industry and the combined removal of odors and stench, while also achieving effective capture of ultrafine particles. Combined with automated control, this gradual utilization process of residual heat operates with low energy consumption, thereby achieving the dual effects of energy saving and environmental protection. [Brief explanation of the drawings]

[0018] In order to make the contents of the present invention easier and clearer to understand, the present invention will be described in more detail below in combination with specific embodiments and drawings of the present invention. [Figure 1] FIG. 1 is a structural schematic diagram of an exhaust gas purification device according to a preferred embodiment of the present invention. [Figure 2] FIG. 2 is a schematic diagram showing a partial structure of an organic exhaust gas removal device of an exhaust gas purification device according to a preferred embodiment of the present invention. [Figure 3] FIG. 3 is a partial structural schematic diagram of a bubble cleaning assembly of an exhaust gas purification device according to a preferred embodiment of the present invention. [Figure 4] FIG. 4 is a schematic diagram of an expanded bidirectional telescopic device of an exhaust gas purification apparatus according to a preferred embodiment of the present invention. [Figure 5] FIG. 5 is a structural schematic diagram of an intelligent textile printing exhaust gas utilization and treatment equipment according to a preferred embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0019] The present invention will be further described below in combination with drawings and specific examples, so that those skilled in the art can better understand and practice the present invention, but the examples given are not intended to limit the present invention.

[0020] Example 1 As shown in FIGS. 1 to 5, the present invention discloses an exhaust gas purification device, Cycle water storage tank 1, a liquid cycle tank 2; a water filtration system 3, the outlet of which is connected to the cycle water storage tank 1, the inlet of which is used to filter external contaminant liquid, and the inlet of which is provided with a first liquid injection pipe 30; a bubble generator 4 connected to the cycle water storage tank 1; The upper end of the organic exhaust gas removing device 5 is simultaneously connected to the bubble generating device 4 and the liquid cycle tank 2, and the lower end of the organic exhaust gas removing device 5 is fixedly connected to the liquid cycle tank 2.

[0021] In a preferred embodiment, the organic exhaust gas removal device 5 includes a support base 51, a reaction tank 52 assembled on the upper end of the support base 51, a drive motor 53 assembled on the reaction tank 52, a first connection pipe 11 and a second connection pipe 12 assembled on the reaction tank 52, the first connection pipe 11 and the second connection pipe 12 being located on both sides of the drive motor 53, respectively. The first connection pipe 11 is connected to the liquid cycle tank 2, and the second connection pipe 12 is connected to the bubble generator 4. The bottom of the reaction tank 52 and the liquid cycle tank 2 are connected via a third connection pipe 13, and an outlet pipe 54 is assembled on the upper end of the reaction tank 52.

[0022] Furthermore, an exhaust port 21 is provided at the center of the upper end of the liquid cycle tank 2, and a water intake pump 22 is assembled to one end of the first connecting pipe 11 that is connected to the liquid cycle tank 2, and the water intake pump 22 is installed near the exhaust port 21.

[0023] Since the bubbles generated in the bubble generator 4 are not uniform, the water pressure that causes the balance is different, and in order to prevent some of the bubbles from collapsing at the bottom of the organic exhaust gas removal device 5 and entering the liquid cycle tank 2 along with the water flow, an exhaust port 21 is provided, and the lower end of the suction pump 22 enters the lower end of the liquid surface of the liquid cycle tank 2, and the liquid in the liquid cycle tank 2 is sucked into the organic exhaust gas removal device 5 by the action of the suction pump 22, thereby realizing the cyclical use of water resources.

[0024] Furthermore, a connecting shaft 55 is installed coaxially with the output shaft of the driving motor 53 , and a guide blade 56 is installed on the connecting shaft 55 , and the edge of the guide blade 56 is tangent to the inner wall of the reaction tank 52 .

[0025] In detail, a fixing screw 57 is provided in the reaction tank 52, and the fixing screw 57 is installed at one end where the third connecting pipe 13 and the reaction tank 52 are connected, and the fixing screw 57 is also provided at the upper end of the third connecting pipe 13. A miniature motor is provided between the fixing screw 57 and the third connecting pipe 13, and the miniature motor is attached to the third connecting pipe 13 and used to drive the fixing screw 57 to rotate. In addition, an air bubble cleaning assembly 58 is provided on the fixing screw 57, and two sets of spiral grooves are formed on the connecting shaft 55 at the upper and lower sides of the guide blade 56, respectively, at an equal distance from the guide blade, and the air bubble cleaning assembly 58 is in sliding contact with the spiral grooves.

[0026] The rotation direction of the mini-motor is counterclockwise, and the drive motor 53 rotates clockwise. When the bubble cleaning assembly 58 moves to the bottom of the guide blade 56, the mini-motor starts. Because there are differences in the diameters of the bubbles generated by the bubble generator 4, the bubbles need to form a balance in the water. The pressure inside the bubbles must be equal to the sum of the water pressure and the replenishment pressure caused by the surface tension of the bubbles in the water. If this balance is broken, the bubbles will collapse. In addition, the pressure inside the bubbles is inversely proportional to the diameter of the bubbles. Therefore, the water pressure required to collapse bubbles with different diameters is different. When bubbles are injected from the bottom, some bubbles will not combine sufficiently with the water and will collapse, resulting in a balance. Some of the bubbles that have not yet reached the disintegration condition will rise to the surface with the water current and not collapse in the water, while some will adhere to the inner wall of the vessel, allowing the guide blade 56 to move the water downward. Because the bubbles are small, their buoyancy is basically negligible, and they are easily affected by the water current and move downward with the water current. As the bubbles deepen in the water, they are subjected to greater water pressure, allowing bubbles of different diameters to fully combine with the water and gradually reach the disintegration condition. The guide blade 56 rotates and cleans the bubbles adhering to the inner wall of the reaction tank 52, thereby further improving the bubble purification efficiency.

[0027] In the initial state, the bubble cleaning assembly 58 is located above the guide blade 56. When the device is operating, certain bubbles will adhere to the guide blade 56, thereby affecting the cleaning efficiency. When the guide blade 56 begins to rotate, the mini-motor is turned off and the fixing screw 57 is relatively stationary. The bubble cleaning assembly 58 slides along the spiral groove, causing the guide blade 56 to rotate and the fixing screw 57 to move it downward, thereby cleaning the bubbles on the guide blade 56 at different positions. When the guide blade 56 reaches the bottom, the mini-motor is started, and its rotation speed is greater than that of the drive motor 53, lifting the bubble cleaning assembly 58. The mini-motor is then turned off until it returns to its initial position. This process is repeated to effectively remove fine bubbles from each assembly of the device, thereby improving the cleaning efficiency.

[0028] Furthermore, a plurality of sets of discharge holes 59 are formed in the third connecting pipe 13 connected to the reaction tank 52 at the lower end of the fixing screw 57 .

[0029] In operation, first, 90% of the volume of water is poured into the reaction tank 52, and the bubble generator 4 is activated to inject fine bubbles into the reaction tank 52. At the same time, the valve below the liquid cycle tank 2, the drive motor 53, and the suction pump 22 are turned on. A part of the water flows through the discharge hole 59 and into the liquid cycle tank 2. The fine bubbles move downward with the water flow, and as the depth increases, they gradually lose their equilibrium condition. Due to this collapse, a large amount of active hydroxyl radicals are generated. The active hydroxyl radicals and active oxygen radicals quickly complete the oxidative decomposition of the organic pollutants in the water, thereby achieving the purpose of purifying the organic pollutants. The purified gas rises and is discharged from the device through the outlet pipe 54, and the water flow enters the liquid cycle tank 2. The water suction pump 22 can re-inject the water in the liquid cycle tank 2 into the reaction tank 52. The injection rate of the water suction pump 22 is equal to the outflow rate of the reaction tank 52, so that the liquid level in the reaction tank 52 is always maintained at the initial level. The liquid level in the liquid cycle tank 2 is lower than the liquid level in the reaction tank 52, which can form a siphon effect to a certain extent, thereby accelerating the flow rate of the liquid in the reaction tank 52 and improving the purification efficiency.

[0030] As can be seen from this, the exhaust gas purification device based on the micro-bubble exhaust gas treatment principle protected by the present invention is equipped with a cycle water storage tank, a liquid cycle tank, a water filtration system, a bubble generator, and an organic exhaust gas removal device. External polluting liquid is fed into the water filtration system 3, which is filtered and purified before being poured into the cycle water storage tank 1, realizing the cyclic utilization of water resources. Exhaust gas enters the bubble generator 4, which combines the exhaust gas with water to generate micro- and nano-sized bubbles, which are then poured into the organic exhaust gas removal device 5. The bubbles constantly move downward due to the action of the water flow, and when their internal balance is disturbed, they collapse, decomposing the pollutants inside. The purified gas rises and is discharged through the blow-off pipe 54. The liquid flows from the bottom of the organic exhaust gas removal device 5 through the third connecting pipe 13 into the liquid cycle tank 2.

[0031] Further, the bubble cleaning assembly 58 includes a rotating block 581 and a rotating frame 582, the rotating block 581 is provided with an internal thread, and the rotating block 581 is assembled to the fixing screw 57 via the internal thread, two sets of inner column cleaning pads 5810 are respectively provided on the upper and lower surfaces of the rotating block 581, the rotating frame 582 is rotatably assembled around the center of the side wall of the rotating block 581, a first sliding block 583 and a second sliding block 584 are symmetrically assembled to the rotating frame 582, and the first sliding block 583 and the second sliding block 584 are respectively slidably assembled within the two sets of spiral grooves, a first brush blade 585 and a second brush blade 586 are installed opposite the first sliding block 583 and the second sliding block 584, and a brush 587 is installed opposite the first brush blade 585 and the second brush blade 586.

[0032] Specifically, an outer column cleaning pad 588 is coaxially and slidably fitted on the connecting shaft 55, a first rotation shaft is installed on the outer surface of the first sliding block 583, a bidirectional telescopic device 589 is slidably installed on the first rotation shaft, and the bidirectional telescopic device 589 is fitted on the outer column cleaning pad 588. The outer column cleaning pad 588 is coaxially and slidably fitted on the guide blade 56. A bidirectional telescopic device 589 is installed on the second sliding block 584 in the same manner.

[0033] The bidirectional telescopic device 589 is a bidirectional four-stage telescopic mechanism, and each stage is connected via two sets of tension springs 590.

[0034] In a specific implementation, the two sets of inner column cleaning pad 5810 and outer column cleaning pad 588 can respectively clean the air bubbles attached to the column surface of the guide blade 56. The guide blade 56 and the water flow drive them downward, causing them to lose balance and collapse. The rotating block 581 cleans the air bubbles on the fixing screw 57 during the rotation process, and the brush 587 removes the air bubbles on the guide blade 56. During the rotation and downward movement of the rotating block 581, the first sliding block 583 and the second sliding block 584 are always in close contact with the spiral groove of the connecting shaft 55 due to the rotation of the rotating frame 582, so that the first brush blade 585 and the second brush The plane on which the blade 586 lies is always parallel to the cross section of the guide blade 56 at that position. At the same time, during the rotation process of the first sliding block 583 and the second sliding block 584, the extension and contraction of each stage of the bidirectional telescopic device 589 ensures that the outer column cleaning pad 588 is always coaxial with the guide blade 56. The tension spring 590 allows the bidirectional telescopic device 589 to contract when the first sliding block 583 and the second sliding block 584 are not acting, preventing it from affecting the up and down movement of the rotation block 581. At the same time, the tension spring 590 has a certain restricting effect on each stage of the bidirectional telescopic device 589, preventing it from being damaged due to separation.

[0035] The exhaust gas purification device based on the microbubble principle of the present invention fully contacts the low-concentration small-chain organic exhaust gas in the exhaust gas with the high-concentration fine-bubble spray water, and generates dual physical and chemical processes such as mechanical decomposition, thermal decomposition, and radical oxidation, which decompose and convert the small-chain organic pollutants in the exhaust gas into CO2, H2O, N2, and some solid particles. The exhaust gas purification device of the present invention also reacts and decomposes organic pollutants dissolved in water. It also solves the problem of some bubbles adhering to the inner walls of the treatment device, greatly improving the purification efficiency of the device.

[0036] Example 2 The present invention also discloses an intelligent textile printing exhaust gas waste heat utilization and advanced treatment equipment; The system includes a waste heat gradual utilization unit, a spray unit, a combined pulse electrostatic adsorption tower unit, a two-stage high-temperature water white smoke removal unit, and an exhaust unit, which are arranged in sequence along the flow direction of the exhaust gas. The exhaust gas generated during printing enters through the waste heat gradual utilization unit, passes through the spray unit, combined pulse electrostatic adsorption tower unit, and two-stage high-temperature water white smoke removal unit in order, and is discharged from the exhaust unit.

[0037] The system further includes an oil-water separation box 6, a sodium chloride electrolysis device 7, and the above-mentioned exhaust gas purification device. The oil-water separation box 6 is connected to the exhaust gas purification device, the sodium chloride electrolysis device 7, the combined pulse electrostatic adsorption tower unit, and the waste heat step-by-step utilization unit, respectively. The sodium chloride electrolysis device 7 is connected to the spray unit.

[0038] The exhaust gas purification devices are respectively connected to the spray unit and the composite pulse electrostatic adsorption tower unit.

[0039] Specifically, the spray unit includes a fine bubble water spray device 81, a hypohalous acid water spray device 82, and a sodium hydroxide water spray device 83, and the fine bubble water spray device is connected to the bubble generating device of the exhaust gas purification device via a fourth connecting pipe 14, and the fourth connecting pipe 14 is connected to the second connecting pipe 12 of the exhaust gas purification device.

[0040] The sodium chloride electrolysis device 7 can simultaneously produce hypochlorous acid solution and sodium hydroxide solution, and the resulting hypochlorous acid solution enters the hypohalous acid water spray device 82, where the hypochlorous acid spray and the organic exhaust gases remaining in the exhaust gas continue to undergo oxidative decomposition reaction, further eliminating the unpleasant odor of the organic exhaust gases contained in the exhaust gas. By producing the hypochlorous acid solution nearby and using it immediately, the problem of sodium hypochlorite being easily decomposed can be effectively avoided. The sodium hydroxide solution produced by the sodium chloride electrolysis device 7 enters the sodium hydroxide water spray device 83, where it neutralizes the hypochlorous acid not involved in the reaction in the previous process, preventing corrosion of downstream equipment and reacting with the acidic exhaust gas in the exhaust gas to reduce the unpleasant odor. It can also be sprayed to remove lint, particles, carbon black, etc., and charge them with water to facilitate electrostatic adsorption in the downstream process. The exhaust gas from textile printing sets and drying equipment contains many fine capillaries and particles, especially when natural gas is directly burned and heated, which produces a large amount of ultrafine carbon black particles. If the pre-processing does not involve water, the carbon black is an insulating material and does not easily retain charge during electrostatic adsorption, resulting in poor adsorption. In this way, the problem of poor electrostatic adsorption at the rear end can be effectively solved.

[0041] In addition, a de-misting device 84 is further provided at the end of the spraying device, which uses a two-stage folding mechanism to effectively remove water droplets and mist, as well as oil droplets and particles, thereby reducing the processing pressure in the subsequent stages.

[0042] The composite pulse electrostatic adsorption tower unit further includes a first composite pulse electrostatic adsorption tower 91 and a second composite pulse electrostatic adsorption tower 92 connected to each other. The exhaust port of the first composite pulse electrostatic adsorption tower 91 is connected to the inlet port of the second composite pulse electrostatic adsorption tower 92, and the outlet pipe 54 of the exhaust gas purification system is connected to the inlet port of the second composite pulse electrostatic adsorption tower 92. By combining a basic voltage with a pulse voltage and adjusting the width and frequency, the capture efficiency of ultrafine particles is improved, and the capture efficiency of fine carbon black generated during direct combustion of natural gas is effectively improved. The composite pulse electrostatic adsorption tower unit uses a honeycomb vertical electric field, resulting in a stable and reliable overall structure. Both the first composite pulse electrostatic adsorption tower 91 and the second composite pulse electrostatic adsorption tower 92 use upward blow-out negative pressure adsorption. Therefore, relatively little oil or liquid droplets are carried out. Oil dust and other particles are efficiently adsorbed and coagulated, and then concentrated and discharged through the outlet duct by gravity. At the same time, a water automatic cleaning swirl flow nozzle is installed at the top, and a steam automatic cleaning device is installed at the bottom to clean the mixture of oil, wax, particles, etc. adhering to the tube wall. In addition, an insulating ceramic automatic cleaning mechanism is also installed, which can keep the inside of the electrostatic tower body clean for a long time and avoid safety risks.

[0043] Specifically, the two-stage high-temperature water white smoke removal unit is installed at the outlet of the second composite pulse electrostatic adsorption tower 92. The two-stage high-temperature water white smoke removal unit uses steam condensate collected at the workshop and high-temperature purified water recovered from the dyeing vessel, etc., to remove white smoke from the purified exhaust gas through parallel two-stage heating, thereby eliminating the problem of "visual pollution" at the exhaust outlet caused by white smoke, and achieving "colorless and tasteless" low emissions.

[0044] The exhaust unit is connected to the two-stage high-temperature water white smoke removal unit, and includes an exhaust pipe 93, an exhaust device 94 installed in the exhaust pipe 93, and a real-time gas monitoring device 95. The gas monitoring device 95 can monitor non-methane hydrocarbons and abnormal odors in the exhaust gas, and can issue an alarm when an abnormality occurs in the exhaust.

[0045] The first liquid injection pipe 30 of the exhaust gas purification device is connected to the oil-water separation box 6, and the liquid in the oil-water separation box 6 can enter the water filtration system 3 of the exhaust gas purification device through the first liquid injection pipe 30.

[0046] The waste heat cascade utilization unit includes a high-temperature gas-gas heat exchanger 60, a medium-temperature gas-water heat exchanger 61, and a low-temperature gas-gas heat exchanger 62, which are installed in sequence along the exhaust gas flow direction. The high-temperature gas-gas heat exchanger 60 transports high-temperature fresh air (above 100°C) back to the production equipment for use. An automatic return device is installed on the suction filter to prevent clogging of the suction filter. The medium-temperature hot water (50-70°C) in the medium-temperature gas-water heat exchanger 61 can be recovered for production use, effectively saving energy. The warm air from the low-temperature gas-gas heat exchanger 62 can be recovered and used in winter workshop heating, air-source heat pump ventilation, drying equipment preheating, and other operational situations requiring fresh warm air. This waste heat cascade utilization process maximizes waste heat utilization and fully combines energy savings and environmental protection.

[0047] In addition, a wind pressure adjusting device is further provided in the waste heat gradual utilization unit, and the wind pressure adjusting device is installed at the inlet of the medium-temperature gas-water heat exchanger 61. The wind pressure adjusting device can set the wind pressure value of the system based on the actual working conditions and adjust the operating frequency of the fan in real time, which is beneficial to energy saving during operation. In addition, a backwash mechanism is installed in front of the anemometer to ensure stable operation of the anemometer.

[0048] The treatment equipment of the present invention further includes a plurality of automatic alkaline water cleaning devices, which are connected to the sodium chloride electrolysis device 7 and receive sodium hydroxide solution from the sodium chloride electrolysis device 7. Specifically, the treatment equipment includes a first automatic alkaline water cleaning device 63 installed in the low-temperature gas-gas heat exchanger 62, a second automatic alkaline water cleaning device 64 installed in the first composite pulse electrostatic adsorption tower 91, and a third automatic alkaline water cleaning device 65 installed in the second composite pulse electrostatic adsorption tower 92.

[0049] Specifically, the treatment equipment further includes a plurality of automatic fouling detection devices that use ultrasonic surface waves to detect fouling on metal surfaces within the equipment. When a certain amount of fouling accumulates, an online automatic cleaning device is activated, effectively resolving the problems of fouling clogging and fire hazards within the equipment. The automatic fouling detection devices are respectively installed in the waste heat stepwise utilization unit and the multiple pulse electrostatic adsorption tower unit. Specifically, the automatic fouling detection devices include a first automatic fouling detection device 66 installed in the high-temperature gas-gas heat exchanger 60, a second automatic fouling detection device 67 installed in the medium-temperature gas-water heat exchanger 61, a third automatic fouling detection device 68 installed in the first multiple pulse electrostatic adsorption tower 91, and a fourth automatic fouling detection device 69 installed in the second multiple pulse electrostatic adsorption tower 92.

[0050] Furthermore, the treatment equipment further includes a plurality of automatic steam cleaning devices, including a first automatic steam cleaning device 601 installed in the high-temperature gas-gas heat exchange device 60 and a second automatic steam cleaning device 602 installed at the outlet of the spray unit.

[0051] Furthermore, multiple temperature detection devices are installed in the treatment equipment to monitor the temperature situation in real time, and facilitate corresponding control and adjustment. For example, if the temperature exceeds the warning temperature, an alarm will sound and shut down the equipment, and steam and water firefighting will be automatically activated, and a fire alarm will be notified to the workplace. The blowing temperature and blower frequency will be adjusted in real time, and the draining temperature and proportional valve will be adjusted in real time.

[0052] The treatment equipment further includes an electrical controller 96, and the residual heat stage utilization unit, spray unit, combined pulse electrostatic adsorption tower unit, two-stage high-temperature water white smoke removal unit, exhaust unit, multiple automatic alkaline water cleaning devices, wind pressure adjustment device, multiple automatic steam cleaning devices, multiple automatic deposit detection devices, and multiple temperature detection devices are all connected to the electrical controller, thereby realizing automated control.

[0053] When the exhaust gas purification device of the present invention is used in combination with the intelligent textile printing exhaust gas utilization and treatment equipment, the working principle and process are as follows: The exhaust gas generated during processing undergoes initial heat exchange cooling and multiple spraying processes, and the resulting polluting liquid enters the oil-water separation box 6. After initial settling, large particles sink to the bottom, and the oil-water on top is separated. After that, the water is taken from the oil-water separation box 6 and sent to the water filtration system 3. After filtration, it enters the recycling water storage tank 1, realizing the cyclic use of water resources. At this time, some harmful organic pollutants are dissolved in the wastewater, The bubble generator 4 generates micro-nano level bubbles in the filtered wastewater, which is then split into two branches. One branch is connected to the fine bubble water spray device 81, which directly sprays the exhaust gas and contacts the low concentration small molecular chain organic exhaust gas in the exhaust gas, generating dual physical and chemical effects such as mechanical decomposition, thermal decomposition, and radical oxidation, which are used to decompose the small molecular chain VOCs in the exhaust gas into carbon dioxide, water, nitrogen gas, and some solid particles. The other branch enters the organic exhaust gas removal device 5, where the bubbles constantly move downward due to the action of the water flow, causing the internal balance to be disrupted and then collapsing, decomposing the contaminants inside. The purified organic contaminants produce gas, which rises to the surface and is sucked up by negative pressure into the next treatment process, preventing the overflow of incompletely reacted exhaust gas. The liquid enters the liquid cycle tank 2 from the bottom and then re-enters the organic exhaust gas removal device 5 via the suction pump 22, completing the cycle of water resource utilization.

[0054] It is apparent that the above examples are merely provided for clarity and are not intended to limit the scope of the present invention. Those skilled in the art can make various modifications and improvements based on the above description. It is not necessary and cannot be possible to list all the embodiments herein. Any obvious modifications and improvements based thereon still fall within the scope of protection of the present invention. Explanation of symbols

[0055] 1, cycle water storage tank, 11, first connecting pipe, 12, second connecting pipe, 13, third connecting pipe, 14, fourth connecting pipe, 2, liquid cycle tank, 21, exhaust port, 22, suction pump, 3, water filtration system, 30, first liquid injection pipe, 4, bubble generator, 5, organic exhaust gas removal device, 51, support base, 52, reaction tank, 53, drive motor, 54, blow-out pipe, 55, connecting shaft, 56, guide blade, 57, fixing screw, 58, bubble cleaning assembly, 581, rotating block, 5810, inner column cleaning pad, 582, rotating frame, 583, first sliding block, 584, second sliding block, 585, first brush blade, 586, second brush blade, 587, brush, 588, outer column cleaning pad, 589, bidirectional telescopic device, 59, discharge hole, 590 , tension spring, 6, oil-water separation box, 60, high-temperature gas-gas heat exchanger, 601, first automatic steam cleaning device, 602, second automatic steam cleaning device, 61, medium-temperature gas-water heat exchanger, 62, low-temperature gas-gas heat exchanger, 63, first automatic alkaline water cleaning device, 64, second automatic alkaline water cleaning device, 65, third automatic alkaline water cleaning device, 66, first automatic deposit detection device, 67, second automatic deposit detection device, 68, third automatic deposit detection device, 69, fourth automatic deposit detection device, 7, sodium chloride electrolysis device, 81, fine bubble water spray device, 82, hypohalous acid water spray device, 83, sodium hydroxide water spray device, 84, defog device, 91, first combined pulse electrostatic adsorption tower, 92, second combined pulse electrostatic adsorption tower, 93, exhaust pipe, 94, exhaust device, 95, gas monitoring device, 96, electric controller.

Claims

1. An exhaust gas purification device, A cycle water tank, A liquid cycle tank; a water filtration system connected to the cycle water reservoir; a bubble generator connected to the cycle water storage tank; an organic exhaust gas removal device, the upper end of which is simultaneously connected to the bubble generating device and the liquid cycle tank, and the lower end of which is connected to the liquid cycle tank; The organic exhaust gas removal device includes a support base, a reaction tank is assembled on the upper end of the support base, a drive motor is assembled on the reaction tank, a first connection pipe and a second connection pipe are respectively assembled on the reaction tank, the first connection pipe is connected to the liquid cycle tank, the second connection pipe is connected to the bubble generator, the bottom of the reaction tank and the liquid cycle tank are connected via a third connection pipe, and an outlet pipe is assembled on the upper end of the reaction tank, a connecting shaft is coaxially installed on the output shaft of the driving motor, and a guide blade is provided on the connecting shaft, and an edge of the guide blade is tangent to the inner wall of the reaction tank; an exhaust gas purification device characterized in that a fixed screw is installed in the reaction tank, the fixed screw is installed at the upper end of the third connecting pipe, and a small motor is installed between the fixed screw and the third connecting pipe; the fixed screw is installed with a bubble cleaning assembly; the connecting shaft has two sets of spiral grooves on both the upper and lower sides of the guide blade, each set equidistant from the guide blade; and the bubble cleaning assembly is in sliding contact with the spiral grooves.

2. The exhaust gas purification device of claim 1, wherein the bubble cleaning assembly includes a rotating block and a rotating frame, the rotating block is provided with an internal thread, the rotating block is assembled to the fixing screw via the internal thread, inner column cleaning pads are provided on the upper and lower flat surfaces of the rotating block, the rotating frame is rotatably assembled around the center of the side wall of the rotating block, two sets of sliding blocks are assembled to the rotating frame, the two sets of sliding blocks are slidably assembled within the two sets of spiral grooves, and a pair of brush blades are installed opposite each other inside the two sets of sliding blocks, and brushes are provided on the brush blades.

3. 3. The exhaust gas purification device according to claim 2, wherein an outer column cleaning pad is coaxially and slidably fitted onto the connecting shaft, a rotating shaft is installed on the outer surface of the sliding block, a bidirectional telescopic device is slidably installed on the rotating shaft, and the bidirectional telescopic device is fitted onto the outer column cleaning pad.

4. 2. The exhaust gas purification device according to claim 1, wherein an exhaust port is provided at an upper end of the liquid cycle tank, and a water intake pump is assembled to one end of the first connecting pipe connected to the liquid cycle tank.

5. 1. An intelligent textile printing exhaust gas waste heat utilization and advanced treatment equipment, comprising: a waste heat step-by-step utilization unit, a spray unit, a composite pulse electrostatic adsorption tower unit, a two-stage high-temperature water white smoke removal unit and an exhaust unit, which are installed in this order along the flow direction of the exhaust gas; and further comprising an oil-water separation box, a sodium chloride electrolysis device and the exhaust gas purification device according to any one of claims 1 to 4, wherein the oil-water separation box is respectively connected to the exhaust gas purification device, the sodium chloride electrolysis device, the composite pulse electrostatic adsorption tower unit and the waste heat step-by-step utilization unit; the sodium chloride electrolysis device is connected to the spray unit; and the exhaust gas purification device is respectively connected to the spray unit, the composite pulse electrostatic adsorption tower unit and the oil-water separation box.

6. The intelligent textile printing exhaust gas waste heat utilization and advanced treatment equipment as described in claim 5, characterized in that the spraying unit includes a fine bubble water spraying device, a hypohalous acid water spraying device and a sodium hydroxide water spraying device, and the fine bubble water spraying device is connected to the bubble generating device of the exhaust gas purification device through a first connecting pipe.

7. 6. The intelligent textile printing exhaust gas waste heat utilization and advanced treatment equipment according to claim 5, wherein the complex-pulse electrostatic adsorption tower unit comprises a first complex-pulse electrostatic adsorption tower and a second complex-pulse electrostatic adsorption tower connected to each other, the exhaust port of the first complex-pulse electrostatic adsorption tower communicates with the inlet port of the second complex-pulse electrostatic adsorption tower, and the blowing pipe of the exhaust gas purification device communicates with the inlet port of the second complex-pulse electrostatic adsorption tower.

8. The intelligent textile printing exhaust gas waste heat utilization and advanced treatment equipment according to claim 5, wherein the first liquid injection pipe of the exhaust gas purification device is connected to the oil-water separation box.

9. The intelligent textile printing exhaust gas waste heat utilization and advanced treatment equipment according to claim 5, wherein the waste heat gradual utilization unit comprises a high-temperature gas-to-gas heat exchanger, a medium-temperature gas-to-water heat exchanger and a low-temperature gas-to-gas heat exchanger, which are installed in sequence along the flow direction of the exhaust gas.

10. The intelligent textile printing exhaust gas waste heat utilization and advanced treatment equipment according to claim 5, further comprising a plurality of automatic alkaline water cleaning devices, each of which is installed in the waste heat step-by-step utilization unit and the combined pulse electrostatic adsorption tower unit, respectively.

11. The intelligent textile printing exhaust gas waste heat utilization and advanced treatment equipment according to claim 5, further comprising a plurality of automatic deposit detection devices, each of which is installed in the waste heat step-by-step utilization unit and the composite pulse electrostatic adsorption tower unit, respectively.

12. The intelligent printing exhaust gas waste heat utilization and advanced treatment equipment according to claim 5, wherein the exhaust unit comprises an exhaust pipe, and an exhaust device and a real-time gas monitoring device installed in the exhaust pipe.

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