A device for treating flammable and explosive gases in organic waste landfills

Abstract

The present invention belongs to the technical field of waste gas separation and purification, and in particular, relates to an inflammable and explosive gas treatment device for an organic waste landfill, comprising a tower body and an air inlet pipe arranged on one side of the tower body, and further comprising: a dust removal unit, the dust removal unit being arranged on the outside of the tower body, the dust removal unit comprising a dust collecting box, the dust collecting box being connected to the air outlet end of the air inlet pipe; a dehydration unit being arranged between the dust removal unit and the tower body, the dehydration unit comprising a dehydration box arranged on one side of the dust collecting box. The present invention can perform dust removal, dehydration and desulfurization treatment on waste gas, and can regulate the spraying amount of desulfurizer according to the concentration of sulfur-containing waste gas in the waste gas, so as to ensure sufficient desulfurization and reduce the waste of desulfurizer. At the same time, it can avoid water droplets affecting the removal effect of water content in waste gas, and use the water liquid generated by dehydration to backwash the dust removal filter. The desulfurization, dehydration and dust removal work complement each other, and have a good separation and purification effect on waste gas.

Description

Technical Field

[0001] The invention belongs to the technical field of waste gas separation and purification, and in particular relates to a device for treating flammable and explosive gases in an organic waste landfill. Background Art

[0002] With economic development, the amount of organic waste continues to grow, and its waste gas treatment has become increasingly critical. The waste gas composition of organic waste is diverse, including methane, carbon dioxide and other gases, as well as sulfur-containing compounds such as hydrogen sulfide. In order to avoid the impact of waste gas on the environment and to reuse the waste gas, the waste gas needs to be treated.

[0003] At present, the waste gas generated by the decomposition of organic waste landfills usually includes flammable and explosive gases such as methane and hydrogen sulfide. Generally, the waste gas is collected and transported to the treatment equipment through a collection tower and a collection pipeline. The treatment equipment usually needs to perform dust removal, dehydration, desulfurization and other treatments on the waste gas to facilitate the subsequent reuse of the treated waste gas, such as the landfill odor treatment device disclosed in patent publication number CN105413419B;

[0004] When the waste gas generated by organic waste is separated and purified, if it needs to be desulfurized, it is generally treated by spraying a desulfurizer on the waste gas, and the desulfurizer is used to react with sulfur-containing waste gases such as hydrogen sulfide to remove waste gases such as hydrogen sulfide. However, due to the uneven distribution of organic waste in the landfill and the different degrees and progress of decomposition of waste at various locations, the concentration of hydrogen sulfide in the waste gas entering the treatment tower is not the same. Although continuous spraying of a certain amount of desulfurizer can meet the desulfurization requirements of the waste gas, when the hydrogen sulfide concentration is low, a large amount of desulfurizer is still used to treat the waste gas, which will result in a waste of some desulfurizers and increase the burden on the recovery of the desulfurizers. Summary of the invention

[0005] The purpose of the present invention is to provide a flammable and explosive gas treatment device for an organic waste landfill in view of the above problems.

[0006] To achieve the above object, the present invention adopts the following technical scheme: an organic waste landfill flammable and explosive gas treatment device, comprising a tower body and an air inlet pipe arranged on one side of the tower body, and also comprising:

[0007] A dust removal unit is arranged on the outside of the tower body, and the dust removal unit includes a dust collecting box, and the dust collecting box is connected to the air outlet end of the air inlet pipe;

[0008] A dehydration unit is arranged between the dust removal unit and the tower body, the dehydration unit includes a dehydration box arranged on one side of the dust collection box, and the dehydration box is connected to the air outlet end of the dust removal unit, a refrigerator is fixedly installed at the bottom of the dehydration box, and each condensation pipe of the refrigerator extends to the interior of the dehydration box;

[0009] A detection box is arranged between the dehydration unit and the tower body, the detection box is equipped with an ultraviolet fluorescence detector, and the detection chamber of the ultraviolet fluorescence detector is arranged inside the detection box, the side wall of the detection box is equipped with an exhaust mechanism, and the detection box is connected to the tower body through the exhaust mechanism;

[0010] An energy storage wiper mechanism is arranged inside the dehydration unit, and the dehydration unit is connected to the detection box through the energy storage wiper mechanism, the energy storage wiper mechanism includes a piston plate slidably arranged inside the dehydration box, and the piston plate is arranged above each condensing tube of the refrigerator, a movable plate is arranged below the piston plate, and a plurality of wiper holes are opened on the end surface of the movable plate, and the movable plate is slidably connected to the outer side wall of each condensing tube of the refrigerator through the wiper holes;

[0011] A desulfurization spray unit is arranged inside the tower body, and a spray end of the desulfurization spray unit sprays a desulfurizer;

[0012] A controller is installed at the lower end of the outer wall of the tower body, and the controller controls the output power of the desulfurization spray unit according to the electrical signal output by the ultraviolet fluorescence detector;

[0013] The air outlet is opened at the top of the tower body.

[0014] Preferably, the dust removal unit also includes a filter assembly that is detachably arranged inside the dust box, and the filter assembly is arranged above the air outlet end of the air inlet pipe. The upper end of the side wall of the dust box away from the air inlet pipe is fixedly connected with an air outlet pipe, and the air outlet pipe is fixedly connected to the interior of the dehydration box.

[0015] Preferably, the dehydration unit further comprises a water outlet pipe fixedly plugged into the lower end of the side wall of the dehydration box, and the water outlet pipe is provided with a flushing mechanism, the water outlet end of the flushing mechanism is arranged above the filter assembly, and the refrigerator is electrically connected to the controller.

[0016] Preferably, the exhaust mechanism includes a protective cover fixedly installed between the detection box and the tower body, a suction pump is provided inside the protective cover, and the suction end of the suction pump is connected with the interior of the detection box, an air pipe is fixedly installed at the output end of the suction pump, the air outlet end of the air pipe extends to the interior of the tower body, and the suction pump is electrically connected to the controller.

[0017] Preferably, the energy storage wiper mechanism also includes a group of guide rods fixedly mounted on the end surface of the piston plate, and each guide rod is slidably connected to the top of the dehydration box, the outer side of each guide rod is movably sleeved with a spring, and each spring is arranged between the upper end of the piston plate and the dehydration box, two connecting rods are fixedly mounted on the lower end of the piston plate, and the two connecting rods are fixedly connected to the movable plate, a plurality of ventilation pipes are fixedly plugged into the side wall of the dehydration box, and each ventilation pipe is connected to the detection box, a first electrically controlled valve is installed inside each ventilation pipe, and each first electrically controlled valve is electrically connected to the controller.

[0018] Preferably, the desulfurization spray unit includes an annular liquid storage tank fixedly mounted on the upper end of the outer wall of the tower body, a hollow circular plate is provided on the inner upper side of the tower body, and a plurality of spray heads are fixedly connected to the lower end of the hollow circular plate, a second electrically-controlled valve is installed at the water inlet end of each spray head, a spray pump is fixedly installed on the top of the hollow circular plate, and the liquid outlet end of the spray pump is connected to the interior of the hollow circular plate, a suction pipe is fixedly connected to the suction end of the spray pump and the annular liquid storage tank, and the controller controls the output power of each second electrically-controlled valve and the spray pump according to the electrical signal output by the ultraviolet fluorescence detector.

[0019] Preferably, the flushing mechanism includes a water collecting tank fixedly connected to a water outlet pipe, a first liquid level gauge is installed on the top of the water collecting tank, and the detection end of the first liquid level gauge is located inside the water collecting tank, a flushing pump is fixedly installed on the lower end of the side wall of the water collecting tank, and a third electrically-controlled valve is installed at the suction end of the flushing pump, the water outlet end of the flushing pump is fixedly connected to a water supply pipe, a hollow water spray plate is fixedly provided at a position above the filter assembly inside the dust collecting box, and a plurality of water spray holes are opened at the lower end of the hollow water spray plate, the hollow water spray plate is connected to the water supply pipe, a sewage pipe is plugged into the bottom of the dust collecting box, and a fifth electrically-controlled valve is installed inside the sewage pipe, and the first liquid level gauge, the third electrically-controlled valve, the flushing pump and the fifth electrically-controlled valve are all electrically connected to the controller.

[0020] Preferably, a second liquid level gauge is installed on one side of the top of the annular liquid storage tank, a liquid infusion tube is fixedly connected to the upper end of the side wall of the annular liquid storage tank, and a fourth electrically controlled valve is installed inside the liquid infusion tube, and the second liquid level gauge and the fourth electrically controlled valve are both electrically connected to the controller.

[0021] Compared with the existing technology, the advantages of an organic waste landfill flammable and explosive gas treatment device are:

[0022] Through the coordination of the tower body, air inlet pipe, dust removal unit, dehydration unit, detection box, ultraviolet fluorescence detector, exhaust mechanism, desulfurization spray unit and controller, the flammable and explosive waste gas generated by the organic waste landfill can be dusted, dehydrated and desulfurized in turn, which is convenient for the utilization of the waste gas. Moreover, through real-time monitoring of the concentration of sulfur-containing waste gas such as hydrogen sulfide in the waste gas, the spraying amount of the desulfurizer can be automatically adjusted according to the monitoring results, thereby reducing the waste of the desulfurizer and alleviating the subsequent burden of recovering the desulfurizer while ensuring sufficient desulfurization of the waste gas.

[0023] The energy storage wiper mechanism can not only cooperate with the ultraviolet fluorescence detector to detect the exhaust gas, but also assist in removing the water droplets condensed on the surface of the refrigerator of the dehydration unit to avoid the water droplets affecting the removal effect of moisture in the exhaust gas, thereby improving the adequacy of separating moisture from the exhaust gas.

[0024] Through the flushing mechanism, the water condensed and collected by the dehydration unit can be used to automatically backwash the filter assembly of the dust removal unit, so that the dust particles attached to the surface of the filter assembly can be removed by backwashing, preventing the filter assembly from being blocked and affecting normal air intake, thereby ensuring the continuous separation effect of solid particulate matter in the exhaust gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a flammable and explosive gas treatment device for an organic waste landfill provided by the present invention;

[0026] Figure 2 It is a schematic diagram of the internal structure of a dust collecting box of a flammable and explosive gas treatment device for an organic waste landfill provided by the present invention;

[0027] Figure 3 It is a schematic diagram of the internal structure of a dehydration box and a detection box of a flammable and explosive gas treatment device for an organic waste landfill provided by the present invention;

[0028] Figure 4 The present invention provides a flammable and explosive gas treatment device for an organic waste landfill. Figure 3 A magnified view of the structure of part A;

[0029] Figure 5 It is a schematic diagram of the internal structure of a tower body of a flammable and explosive gas treatment device for an organic waste landfill provided by the present invention;

[0030] Figure 6 The present invention provides a flammable and explosive gas treatment device for an organic waste landfill. Figure 5 A magnified view of the structure of part B.

[0031] In the figure: 1 tower body, 2 air inlet pipe, 3 dust removal unit, 31 dust collecting box, 32 filter assembly, 33 air outlet pipe, 4 dehydration unit, 41 dehydration box, 42 refrigerator, 43 water outlet pipe, 44 flushing mechanism, 441 water collecting box, 442 first liquid level gauge, 443 flushing pump, 444 third electric control valve, 445 water pipe, 446 hollow water spray plate, 447 water spray hole, 448 sewage pipe, 449 fifth electric control valve, 5 detection box, 6 ultraviolet fluorescence detector, 7 exhaust mechanism , 71 protective sleeve, 72 suction pump, 73 air pipe, 8 energy storage wiper mechanism, 81 piston plate, 82 guide rod, 83 spring, 84 connecting rod, 85 movable plate, 86 wiper hole, 87 ventilation pipe, 88 first electric control valve, 9 desulfurization spray unit, 91 annular liquid storage tank, 92 hollow circular plate, 93 spray head, 94 second electric control valve, 95 spray pump, 96 suction pipe, 10 controller, 11 air outlet, 12 second liquid level meter, 13 liquid replenishing pipe, 14 fourth electric control valve. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] like Figure 1-Figure 6 As shown, a flammable and explosive gas treatment device for an organic waste landfill includes a tower body 1 and an air inlet pipe 2 arranged on one side of the tower body 1, and also includes: a dust removal unit 3, the dust removal unit 3 is arranged on the outside of the tower body 1 and is connected to the air outlet end of the air inlet pipe 2, the dust removal unit 3 includes a dust collecting box 31, the dust collecting box 31 is connected to the air outlet end of the air inlet pipe 2, a detachable filter assembly 32 is installed at a position above the air outlet end of the air inlet pipe 2 inside the dust collecting box 31, an air outlet pipe 33 is fixedly plugged at the upper end of the side wall of the dust collecting box 31 away from the air inlet pipe 2, the filter assembly 32 includes a plurality of mesh filter elements with different mesh diameters, which are used to filter out solid particles of different sizes, and the mesh size of the mesh filter element is designed to increase from top to bottom.

[0034] The dehydration unit 4 is arranged between the dust removal unit 3 and the tower body 1, and the air inlet end of the dehydration unit 4 is connected with the air outlet end of the dust removal unit 3. The dehydration unit 4 includes a dehydration box 41 arranged on one side of the dust collecting box 31, and the dehydration box 41 is connected with the air outlet pipe 33. A refrigerator 42 is fixedly installed at the bottom of the dehydration box 41, and each condensing pipe of the refrigerator 42 extends to the interior of the dehydration box 41. A water outlet pipe 43 is fixedly inserted at the lower end of the side wall of the dehydration box 41, and the water outlet pipe 43 is installed with a flushing mechanism 44. The water outlet end of the flushing mechanism 44 is arranged above the filter assembly 32. The refrigerator 42 is electrically connected to the controller 10. The refrigerator 42 includes components such as a condenser, a compressor, an evaporator, and a fan. The compressor compresses the refrigerant, and the refrigerant enters the condenser to dissipate heat and condense into a liquid. After being reduced in pressure and temperature by the throttling structure, it enters the evaporator for refrigeration. The evaporator can pass the refrigerant into each condensing pipe, so that each condensing pipe condenses the moisture in the exhaust gas.

[0035] The flushing mechanism 44 includes a water collecting box 441 fixedly connected to the water outlet pipe 43, a first liquid level gauge 442 is installed on the top of the water collecting box 441, and the detection end of the first liquid level gauge 442 is inside the water collecting box 441, a flushing pump 443 is fixedly installed at the lower end of the side wall of the water collecting box 441, and a third electric control valve 444 is installed at the suction end of the flushing pump 443, and the water outlet end of the flushing pump 443 is fixedly connected to a water delivery pipe 445, and a hollow water spray valve is fixedly provided at a position above the filter assembly 32 inside the dust collecting box 31 Plate 446, and a plurality of water spray holes 447 are provided at the lower end of the hollow water spray plate 446, the hollow water spray plate 446 is connected to the water pipe 445, a sewage pipe 448 is plugged into the bottom of the dust box 31, and a fifth electrically controlled valve 449 is installed inside the sewage pipe 448, the first liquid level meter 442, the third electrically controlled valve 444, the flushing pump 443 and the fifth electrically controlled valve 449 are all electrically connected to the controller 10, and the sewage pipe 448 is connected to an external sewage pipeline for discharging sewage when the filter assembly 32 is backwashed.

[0036] The detection box 5 is arranged between the dehydration unit 4 and the tower body 1. The detection box 5 is equipped with an ultraviolet fluorescence detector 6, and the detection chamber of the ultraviolet fluorescence detector 6 is arranged inside the detection box 5. The side wall of the detection box 5 is equipped with an exhaust mechanism 7, and the detection box 5 is connected with the tower body 1 through the exhaust mechanism 7. The exhaust mechanism 7 includes a protective sleeve 71 fixedly installed between the detection box 5 and the tower body 1. A suction pump 72 is arranged inside the protective sleeve 71, and the suction end of the suction pump 72 is connected with the inside of the detection box 5. An air supply pipe 73 is fixedly installed at the output end of the suction pump 72, and the air outlet end of the air supply pipe 73 extends to the inside of the tower body 1. The suction pump 72 is electrically connected to the controller 10, and a control valve electrically connected to the controller 10 is installed inside the air supply pipe 73. When the suction pump 72 is working, the control valve and the suction pump 72 are synchronously powered on and opened. When the power is off, the control valve is synchronously powered off to prevent the exhaust gas inside the detection box 5 from escaping.

[0037] The energy storage wiper mechanism 8 is arranged inside the dehydration unit 4, and the dehydration unit 4 is connected to the detection box 5 through the energy storage wiper mechanism 8. The energy storage wiper mechanism 8 includes a piston plate 81 slidably arranged inside the dehydration box 41, and the piston plate 81 is arranged above each condenser tube. A group of guide rods 82 are fixedly installed on the end surface of the piston plate 81, and each guide rod 82 is slidably connected to the top of the dehydration box 41. The outer side of each guide rod 82 is movably sleeved with a spring 83, and each spring 83 is arranged between the upper end of the piston plate 81 and the dehydration box 41. Two connecting rods 84 are fixedly installed at the lower end of the piston plate 81, and the two connecting rods 8 4 are fixedly connected with a movable plate 85 at the rod end, and a plurality of scraping holes 86 are opened on the end surface of the movable plate 85, and the movable plate 85 is slidably connected with the outer side walls of each condensing tube of the refrigerator 42 through the scraping holes 86, and a plurality of ventilation pipes 87 are fixedly inserted into the side wall of the dehydration box 41, and each ventilation pipe 87 is connected with the detection box 5, and a first electric-controlled valve 88 is installed inside each ventilation pipe 87, and each first electric-controlled valve 88 is electrically connected to the controller 10. Under the action of the scraping holes 86, the water droplets attached to the surface of each condensing tube of the refrigerator 42 can be scraped off, thereby avoiding the water droplets affecting the removal effect of moisture in the exhaust gas.

[0038] The desulfurization spray unit 9 is arranged inside the tower body 1, and the controller 10 is installed at the lower end of the outer wall of the tower body 1. The controller 10 controls the output power of the desulfurization spray unit 9 according to the electrical signal output by the ultraviolet fluorescence detector 6. The air outlet 11 is opened at the top of the tower body 1, and a folded plate-shaped demister is installed at the air outlet 11 to prevent part of the desulfurizer from being discharged with the upward movement of the airflow. The desulfurization spray unit 9 includes an annular liquid storage tank 91 fixedly sleeved on the upper end of the outer wall of the tower body 1, a hollow circular plate 92 is provided on the upper side of the inner part of the tower body 1, and a plurality of spray heads 93 are fixedly plugged into the lower end of the hollow circular plate 92, and a second electric control valve 94 is installed at the water inlet end of each spray head 93, a spray pump 95 is fixedly installed on the top of the hollow circular plate 92, and the liquid outlet end of the spray pump 95 is connected to the inside of the hollow circular plate 92, and the suction end of the spray pump 95 and the annular liquid storage tank 91 are fixedly plugged with a suction pipe 96, and the controller 10 controls the output power of the desulfurization spray unit 9 according to the electrical signal output by the ultraviolet fluorescence detector 6. The electrical signal output by the detector 6 controls the output power of each second electrically controlled valve 94 and the spray pump 95. The second electrically controlled valve 94 is an electromagnetic valve, which can control the degree of opening of the valve plate according to the size of the current passed. A second liquid level gauge 12 is installed on one side of the top of the annular liquid storage tank 91, and a liquid replenishing pipe 13 is fixedly inserted at the upper end of the side wall of the annular liquid storage tank 91, and a fourth electrically controlled valve 14 is installed inside the liquid replenishing pipe 13. The second liquid level gauge 12 and the fourth electrically controlled valve 14 are both electrically connected to the controller 10. After the fourth electrically controlled valve 14 is powered on and opened, under the pressure of the supply end of the external desulfurizer supply system, the desulfurizer will be replenished into the annular liquid storage tank 91 through the liquid replenishing pipe 13. A plurality of intersecting levers are installed inside the tower body 1 to reduce the flow velocity of the exhaust gas, which is beneficial for the exhaust gas and the desulfurizer to fully contact and desulfurize, and a discharge pipeline is installed at the lower end of the side wall of the tower body 1 to discharge the desulfurized substances inside the tower body 1.

[0039] The operating principle of the present invention is described as follows: the air inlet pipe 2 is connected to the air outlet end of an external collection system for collecting waste gas from an organic waste landfill, and after the external waste gas collection system is started, the controller 10 is started synchronously;

[0040] After the exhaust gas collection system is started, air will be supplied to the air inlet pipe 2. At this time, the exhaust gas will enter the dust box 31 through the air inlet pipe 2, and will be discharged through the air outlet pipe 33 after passing through the filter assembly 32. When the exhaust gas passes through the filter assembly 32, the solid particles inside the exhaust gas will be filtered and retained, so that the solid particles in the exhaust gas can be removed, and the exhaust gas discharged through the air outlet pipe 33 will enter the dehydration box 41. After the controller 10 is started, the controller 10 will simultaneously start the refrigerator 42 (the refrigerator 42 includes components such as a condenser, a compressor, an evaporator, and a fan. The compressor compresses the refrigerant, and the refrigerant enters the condenser and evaporator. The heat is condensed into liquid, and after the throttling structure reduces the pressure and temperature, it enters the evaporator for refrigeration, and then circulates. The refrigeration temperature is in the range of 3°C to 8°C). After the moisture in the exhaust gas contacts the condenser tube of the refrigerator 42 (the inlet end of the condenser tube is connected to the evaporator, and the inlet and outlet ends are connected to the inlet end of the compressor. When the refrigerant passes through the inside of the condenser tube, the condenser tube can be kept at a low temperature), the moisture in the exhaust gas will condense into water droplets when it is cooled, so that the exhaust gas can be dehydrated. Since the first electric control valve 88 in each ventilation pipe 87 remains in a closed state when not powered on, the gas entering the dehydration box 41 cannot The exhaust gas in the dehydration box 41 will be discharged. At this time, the air pressure inside the dehydration box 41 increases, which will push the piston plate 81 to move up. At this time, the piston plate 81 will synchronously drive the movable plate 85 to move up through the connecting rod 84. One minute after the controller 10 is started, the controller 10 will control the first electric control valve 88 inside each ventilation pipe 87 to open. At this time, under the action of high air pressure, the exhaust gas inside the dehydration box 41 will quickly enter the interior of the detection box 5 through each ventilation pipe 87. Due to the decrease in air pressure, under the action of the spring 83, the piston plate 81 will quickly move down, and the movable plate 85 will move down synchronously. Under the action of the wiper hole 86, the refrigerator The water droplets on the surface of each condensation tube of the refrigerator 42 will be scraped off, so as to avoid the water droplets adhering to the surface of the condensation tube of the refrigerator 42. Since the attachment of water droplets will affect the full contact between the moisture in the exhaust gas and the condensation tube of the refrigerator 42, and affect the temperature transfer, therefore, by scraping off the water droplets in time, the effect of removing moisture in the exhaust gas by the refrigerator 42 can be improved. At the same time, when the first electric control valve 88 inside the ventilation pipe 87 is not powered on and opened, the exhaust gas cannot be discharged through the dehydration box 41, so it can be ensured that the exhaust gas is in full contact with the condensation tube of the refrigerator 42, thereby also improving the effect of removing moisture from the exhaust gas;

[0041] 15 seconds after the first electric control valve 88 is powered on, the controller 10 controls the first electric control valve 88 to be powered off and closed. At this time, the controller 10 controls the ultraviolet fluorescence detector 6 to work. When the exhaust gas enters the detection area of ​​the ultraviolet fluorescence detector 6, it will be irradiated by ultraviolet light of a specific wavelength (for example, in the range of 190 nanometers to 230 nanometers). The electrons in the sulfur-containing exhaust gas will absorb the energy of the ultraviolet light and transition from the ground state to the excited state. This process puts the molecules of the sulfur-containing exhaust gas in an unstable high-energy state and will quickly return to the ground state from the excited state. In this process, energy will be released, part of which is emitted in the form of fluorescence. The higher the concentration of the sulfur-containing exhaust gas, the stronger the intensity of the fluorescence. The ultraviolet fluorescence detector 6 detects the fluorescence intensity and converts the fluorescence intensity into an electrical signal, which is filtered and processed and then output to the controller 10. The controller 10 amplifies the electrical signal through an amplifier circuit and passes it into a measurement circuit. The concentration of the sulfur-containing gas inside the detection box 5 can be detected by measuring the electrical signal intensity.

[0042] After the ultraviolet fluorescence detector 6 has been working for 40 seconds, the controller 10 will control the suction pump 72 to work for 15 seconds. The suction pump 72 can extract the exhaust gas inside the detection box 5 and input it into the tower body 1 through the gas pipe 73. At the same time, the controller 10 will control the spray pump 95 and each second electrically controlled valve 94 to work. The current passed through the spray pump 95 and the second electrically controlled valve 94 is controlled by the controller 10. When the concentration of sulfur-containing exhaust gas exceeds 50%, the electrical signal intensity detected by the measuring circuit of the controller 10 is relatively large. At this time, the spray pump 95 works at maximum power (due to the different specifications of the landfill, the maximum output power of the spray pump 95 is not specifically set here), and each second electrically controlled valve 94 passes the maximum current to make each spray head 93 fully open, so , within 15 seconds of the operation of the suction pump 72, the amount of desulfurizer sprayed through the spray head 93 reaches the maximum state. When the concentration of sulfur-containing waste gas is between 20% and 50%, the controller 10 controls the current input to the spray pump 95 and the second electric control valve 94 to reduce, so that the output power of the spray pump 95 is reduced by one third, and the opening and closing degree of the valve plate of each second electric control valve 94 is reduced by one third. When the concentration of sulfur-containing waste gas is below 20%, the controller 10 controls the output power of the spray pump 95 to reduce by two thirds, so that the opening and closing degree of the valve plate of each second electric control valve 94 is reduced by two thirds, so that the spray amount of the desulfurizer can be controlled based on the concentration detection result of sulfur-containing waste gas such as hydrogen sulfide, and the waste of the desulfurizer can be reduced to a certain extent while ensuring sufficient desulfurization;

[0043] After the suction pump 72 finishes its scheduled operation, the controller 10 controls the spray pump 95 and the second electric control valve 94 to stop working at the same time. At this time, the controller 10 controls the first electric control valve 88 to be powered on again for 15 seconds, and then sequentially controls the ultraviolet fluorescence detector 6, the suction pump 72, etc. to repeat the above operation, so that the exhaust gas can be continuously desulfurized, and the exhaust gas after desulfurization is discharged to the subsequent treatment equipment through the air outlet 11;

[0044] Among them, the water generated by condensation will enter the water collecting tank 441 through the water outlet pipe 43. As the amount of water generated by condensation increases, the water level inside the water collecting tank 441 gradually rises. After the first liquid level meter 442 detects that the liquid level has risen to a preset value (the first liquid level meter 442 calculates the liquid level by emitting infrared rays and calculating the time it takes to receive the reflected infrared rays), an electrical signal will be output to the controller 10. At this time, the controller 10 will control the flushing pump 443 and the third electric control valve 444 to be energized and opened. At this time, the flushing pump 443 can pump out the water inside the water collecting tank 441 and transport it to the hollow chamber through the water delivery pipe 445. The water flows from the inside of the water spray plate 446 to the inside of the water spray holes 447, and then flows downward from the top of the filter assembly 32, so that the filter assembly 32 can be reversely flushed, so that the solid particles attached to the surface of the filter assembly 32 flow downward with the water. At the same time, the controller 10 controls the fifth electric control valve 449 inside the sewage pipe 448 to be powered on and opened, so that the sewage is discharged through the sewage pipe 448 (the sewage pipe 448 is connected to the external sewage pipe for receiving the flushed sewage). After the flushing pump 443 works for 20 seconds, the controller 10 controls the flushing pump 443, the third electric control valve 444 and the fifth electric control valve 449 to stop working.

[0045] As the desulfurizer is sprayed out, the desulfurizer inside the annular liquid storage tank 91 gradually decreases. When the second liquid level gauge 12 detects that the liquid level of the desulfurizer inside the annular liquid storage tank 91 drops to a certain height (the second liquid level gauge 12 emits infrared rays and calculates the time of receiving the reflected infrared rays to calculate the liquid level), the second liquid level gauge 12 will output an electrical signal to the controller 10. At this time, the controller 10 will control the fourth electric control valve 14 to be energized and opened. Under the pressure of the external desulfurizer supply system, the desulfurizer is replenished into the annular liquid storage tank 91 through the liquid replenishing pipe 13. After the fourth electric control valve 14 is energized for 5 minutes, the controller 10 controls the fourth electric control valve 14 to stop working.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A flammable and explosive gas treatment device for an organic waste landfill, comprising a tower body (1) and an air inlet pipe (2) arranged on one side of the tower body (1), characterized in that: Also includes: A dust removal unit (3) is arranged outside the tower body (1), the dust removal unit (3) comprises a dust collection box (31), and the dust collection box (31) is connected to the air outlet end of the air inlet pipe (2); A dehydration unit (4) is arranged between the dust removal unit (3) and the tower body (1), the dehydration unit (4) comprising a dehydration box (41) arranged on one side of the dust collection box (31), the dehydration box (41) being connected to an air outlet of the dust removal unit (3), a refrigerator (42) being fixedly mounted at the bottom of the dehydration box (41), and each condensation pipe of the refrigerator (42) extending into the interior of the dehydration box (41); A detection box (5) is arranged between the dehydration unit (4) and the tower body (1); the detection box (5) is equipped with an ultraviolet fluorescence detector (6), and the detection chamber of the ultraviolet fluorescence detector (6) is arranged inside the detection box (5); an exhaust mechanism (7) is installed on the side wall of the detection box (5), and the detection box (5) is connected to the tower body (1) through the exhaust mechanism (7); An energy storage wiper mechanism (8) is arranged inside the dehydration unit (4), and the dehydration unit (4) is connected to the detection box (5) through the energy storage wiper mechanism (8), the energy storage wiper mechanism (8) comprises a piston plate (81) slidably arranged inside the dehydration box (41), and the piston plate (81) is arranged above each condensing tube of the refrigerator (42), a movable plate (85) is arranged below the piston plate (81), and a plurality of wiper holes (86) are formed on the end surface of the movable plate (85), and the movable plate (85) is slidably connected to the outer wall of each condensing tube of the refrigerator (42) through the wiper holes (86); A desulfurization spray unit (9) is arranged inside the tower body (1), and a spray end of the desulfurization spray unit (9) sprays a desulfurization agent; A controller (10) is installed at the lower end of the outer wall of the tower body (1), and the controller (10) controls the output power of the desulfurization spray unit (9) according to the electrical signal output by the ultraviolet fluorescence detector (6); An air outlet (11) is provided at the top of the tower body (1).

2. The flammable and explosive gas treatment device for an organic waste landfill according to claim 1, characterized in that: The dust removal unit (3) further comprises a filter assembly (32) detachably arranged inside the dust collecting box (31); the filter assembly (32) is arranged above the air outlet end of the air inlet pipe (2); an air outlet pipe (33) is fixedly plugged into the upper end of the side wall of the dust collecting box (31) away from the air inlet pipe (2); the air outlet pipe (33) is fixedly connected to the inside of the dehydration box (41).

3. The flammable and explosive gas treatment device for an organic waste landfill according to claim 2 is characterized in that: The dehydration unit (4) further comprises a water outlet pipe (43) fixedly plugged into the lower end of the side wall of the dehydration box (41), and the water outlet pipe (43) is provided with a flushing mechanism (44), the water outlet end of the flushing mechanism (44) is arranged above the filter assembly (32), and the refrigerator (42) is electrically connected to the controller (10).

4. The flammable and explosive gas treatment device for an organic waste landfill according to claim 1, characterized in that: The exhaust mechanism (7) comprises a protective sleeve (71) fixedly mounted between the detection box (5) and the tower body (1); a suction pump (72) is provided inside the protective sleeve (71); a suction end of the suction pump (72) is connected to the interior of the detection box (5); an air supply pipe (73) is fixedly mounted at the output end of the suction pump (72); an air outlet end of the air supply pipe (73) extends to the interior of the tower body (1); and the suction pump (72) is electrically connected to a controller (10).

5. The inflammable and explosive gas treatment device for an organic waste landfill according to claim 3 is characterized in that: The energy storage wiper mechanism (8) further comprises a group of guide rods (82) fixedly mounted on the end surface of the piston plate (81), and each guide rod (82) is slidably connected to the top of the dehydration box (41); a spring (83) is movably sleeved on the outer side of each guide rod (82), and each spring (83) is arranged between the upper end of the piston plate (81) and the dehydration box (41); two connecting rods (84) are fixedly mounted on the lower end of the piston plate (81), and the two connecting rods (84) are fixedly connected to the movable plate (85); a plurality of ventilation pipes (87) are fixedly plugged into the side wall of the dehydration box (41), and each ventilation pipe (87) is connected to the detection box (5); a first electric control valve (88) is installed inside each ventilation pipe (87), and each first electric control valve (88) is electrically connected to the controller (10).

6. The inflammable and explosive gas treatment device for an organic waste landfill according to claim 1, characterized in that: The desulfurization spray unit (9) comprises an annular liquid storage tank (91) fixedly mounted on the upper end of the outer wall of the tower body (1); a hollow circular plate (92) is provided on the upper inner side of the tower body (1); and a plurality of spray heads (93) are fixedly plugged into the lower end of the hollow circular plate (92); a second electrically controlled valve (94) is installed at the water inlet end of each of the spray heads (93); a spray pump (95) is fixedly mounted on the top of the hollow circular plate (92); and a liquid outlet end of the spray pump (95) is connected to the inside of the hollow circular plate (92); a suction pipe (96) is fixedly plugged into the suction end of the spray pump (95) and the annular liquid storage tank (91); and the controller (10) controls the output power of each of the second electrically controlled valves (94) and the spray pump (95) according to the electrical signal output by the ultraviolet fluorescence detector (6).

7. The inflammable and explosive gas treatment device for an organic waste landfill according to claim 3 is characterized in that: The flushing mechanism (44) comprises a water collecting box (441) fixedly connected to a water outlet pipe (43); a first liquid level gauge (442) is installed on the top of the water collecting box (441), and a detection end of the first liquid level gauge (442) is located inside the water collecting box (441); a flushing pump (443) is fixedly installed at the lower end of a side wall of the water collecting box (441), and a third electric control valve (444) is installed at the suction end of the flushing pump (443); a water outlet end of the flushing pump (443) is fixedly connected to a water delivery pipe (445); and the interior of the dust collecting box (31) is located at a position A hollow water spray plate (446) is fixedly provided above the filter assembly (32), and a plurality of water spray holes (447) are provided at the lower end of the hollow water spray plate (446); the hollow water spray plate (446) is connected to a water pipe (445); a sewage pipe (448) is plugged into the bottom of the dust collecting box (31), and a fifth electrically controlled valve (449) is installed inside the sewage pipe (448); the first liquid level meter (442), the third electrically controlled valve (444), the flushing pump (443) and the fifth electrically controlled valve (449) are all electrically connected to the controller (10).

8. The inflammable and explosive gas treatment device for an organic waste landfill according to claim 6, characterized in that: A second liquid level gauge (12) is installed on one side of the top of the annular liquid storage tank (91), a liquid infusion tube (13) is fixedly plugged into the upper end of the side wall of the annular liquid storage tank (91), and a fourth electrically controlled valve (14) is installed inside the liquid infusion tube (13), and the second liquid level gauge (12) and the fourth electrically controlled valve (14) are both electrically connected to the controller (10).

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