A domestic waste pyrolysis exhaust gas spraying dust removal device

Abstract

This utility model discloses a dust removal device for pyrolysis exhaust gas from municipal solid waste, including a fixed base plate, a controller mounted on the fixed base plate, a water storage tank fixedly connected to the fixed base plate, a water injection mechanism, a spraying mechanism, a filtration mechanism, and a gas cooling mechanism. In this utility model, exhaust gas is introduced into a cooling tank through a gas guide pipe. The aqueous solution inside the cooling tank exchanges heat with the exhaust gas, thereby reducing the temperature of the exhaust gas. This prevents the aqueous solution from evaporating instantly if the high-temperature exhaust gas is directly sprayed, and the cooling also helps tar condense. When the temperature of the aqueous solution inside the cooling tank reaches a preset threshold of a temperature sensor, the cooler is controlled to refrigerate the aqueous solution, preventing the aqueous solution temperature from becoming too high and affecting the cooling effect of the exhaust gas.

Description

Technical Field

[0001] This utility model belongs to the field of municipal solid waste pyrolysis processing technology, and in particular relates to a municipal solid waste pyrolysis exhaust gas spray dust removal device. Background Technology

[0002] People are becoming increasingly aware of the importance of proper waste disposal, and a relatively complete system and well-established procedures have been developed for handling urban household waste.

[0003] Utility model patent CN220047682U discloses a dust removal device for pyrolysis exhaust gas from municipal solid waste, including a support, a spray cylinder shell, and a water tank. The spray cylinder shell is mounted on the support. A smoke exhaust port is located at the top of the spray cylinder shell, connected to an induced draft fan and a chimney via a smoke exhaust pipe. A drain outlet pipe with a drain valve is located at the bottom of the spray cylinder shell. An upper spray pipe and a lower spray pipe are installed inside the spray cylinder shell. The lower spray pipe is located in the lower inner part of the spray cylinder shell, and the upper spray pipe is located in the upper inner part of the spray cylinder shell. Multiple [unclear - possibly referring to a specific type of device] are installed on both the upper and lower spray pipes. The downward-spraying nozzles cover the entire inner cross-section of the spray cylinder shell. An air inlet is installed on the spray cylinder shell below the lower spray pipe. A packing layer is installed inside the spray cylinder shell above the lower spray pipe, and a demister is installed inside the spray cylinder shell above the upper spray pipe. This device does not cool the exhaust gas before treating it, which may cause the aqueous solution to evaporate instantly due to the direct spraying of high-temperature exhaust gas, reducing the treatment efficiency of the exhaust gas. Furthermore, it does not treat and utilize the wastewater, resulting in a waste of water resources. Therefore, a spray dust removal device for exhaust gas from the pyrolysis of municipal solid waste is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide a dust removal device for pyrolysis exhaust gas from municipal solid waste, so as to solve the problems mentioned in the background art.

[0005] A dust removal device for pyrolysis exhaust gas from municipal solid waste includes a fixed base plate, a controller mounted on the fixed base plate, a water storage tank fixedly connected to the fixed base plate, a water injection mechanism, a spraying mechanism, a filtration mechanism, and a gas cooling mechanism.

[0006] Furthermore, a first liquid level sensor is installed inside the water storage tank.

[0007] Furthermore, the water injection mechanism includes a water tank, a first fixed frame, a first water pump, a first water pipe, a second water pipe, a second liquid level sensor, and a third liquid level sensor. The water tank is fixedly connected to the fixed base plate, the first fixed frame is fixedly connected to the water tank, the first water pump is fixedly installed on the first fixed frame, the first water pump is connected to the water tank by a first water pipe, the first water pump is connected to the water tank by a second water pipe, the second liquid level sensor is installed inside the water tank, the third liquid level sensor is installed inside the water tank, and the third liquid level sensor is located above the second liquid level sensor.

[0008] Furthermore, the spraying mechanism includes a support frame, a cleaning tank, a second fixed frame, a second water pump, a third water pipe, multiple water pipes, a reinforcing ring, a sprayer, a third fixed frame, a demister, a first air pipe, a second air pipe, a fourth fixed frame, an air extractor, a third air pipe, an external fixing ring, and a return pipe. The support frame is fixedly connected to the base plate, and the cleaning tank is fixedly connected to the support frame. The second fixed frame is fixedly connected to the water tank, and the second water pump is fixedly installed on the second fixed frame. A third water pipe connects the second water pump to the water tank, and multiple water pipes connect the second water pump to the cleaning tank. Inside the cleaning tank... The unit is fixedly connected to multiple reinforcing rings, with sprayers installed between them. The sprayers are connected to multiple water pipes. A third fixed bracket is fixedly connected to the cleaning tank, and a demister is fixedly installed on the third fixed bracket. A first air pipe connects the demister to the cleaning tank, and a second air pipe connects to the demister. A fourth fixed bracket is fixedly connected to the cleaning tank, and an air extractor is fixedly installed on the fourth fixed bracket. The air extractor is connected to the second air pipe, and a third air pipe connects to the air extractor. Two external fixed rings are fixedly connected to the cleaning tank, with a return pipe connecting between the two external fixed rings. The return pipe connects to the demister.

[0009] Furthermore, the filtration mechanism includes a filter tank, a fourth liquid level sensor, a fifth mounting bracket, a filter, a fourth water pipe, a fifth water pipe, a sixth mounting bracket, a third water pump, and a sixth water pipe. The filter tank is fixedly connected to the base plate, and the fourth liquid level sensor is installed inside the filter tank. The fifth mounting bracket is fixedly connected to the base plate, and the filter is fixedly installed on the fifth mounting bracket. The fourth water pipe connects the filter to the filter tank. The sixth mounting bracket is fixedly connected to the base plate, and the third water pump is fixedly installed on the sixth mounting bracket. The fifth water pipe connects the third water pump to the filter, and the sixth water pipe connects the third water pump to the water storage tank.

[0010] Furthermore, the gas cooling mechanism includes a cooling box, a cooling tank, a gas guide pipe, a gas outlet pipe, a temperature sensor, a fifth liquid level sensor, a drain pipe, an electric valve, a cooler, a sixth fixed frame, a fourth water pump, a seventh water pipe, and an eighth water pipe. The cooling box is fixedly connected to the fixed base plate. The cooling tank is fixedly connected inside the cooling box. A gas guide pipe connects the cooling tank and the cooling box. A gas outlet pipe connects the cooling tank and the cooling box. The gas outlet pipe connects to a cleaning tank. A temperature sensor and a fifth liquid level sensor are installed inside the cooling box. A drain pipe is fixedly connected to the cooling box. An electric valve is installed on the drain pipe. A cooler is installed on the cooling box. A sixth fixed frame is fixedly connected to the water storage tank. A fourth water pump is fixedly installed on the sixth fixed frame. A seventh water pipe connects the fourth water pump to the water storage tank. An eighth water pipe connects the fourth water pump to the cooling box.

[0011] Furthermore, the types of demisters include baffle plate type, wire mesh type, or cyclone type.

[0012] Furthermore, a buzzer is installed on the controller.

[0013] The beneficial effects of this utility model are:

[0014] 1. In this utility model, after the exhaust gas is introduced into the cooling tank through the gas guide pipe, the aqueous solution inside the cooling tank will exchange heat with the exhaust gas, thereby reducing the temperature of the exhaust gas. This prevents the aqueous solution from evaporating instantly if the high-temperature exhaust gas is sprayed directly. The cooling also helps the tar to condense. When the temperature of the aqueous solution inside the cooling tank reaches the preset threshold of the temperature sensor, the cooler is controlled to cool the aqueous solution, preventing the aqueous solution temperature from being too high and affecting the cooling effect of the exhaust gas.

[0015] 2. This utility model controls the third water pump to extract wastewater, which then flows into the filter through the fourth water pipe. The filter removes impurities from the wastewater, and the filtered water solution flows back to the storage tank through the fifth and sixth water pipes, thereby realizing the recycling of water resources. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the municipal solid waste pyrolysis exhaust gas spray dust removal equipment of this utility model;

[0017] Figure 2 This is a cross-sectional three-dimensional structural diagram of the water storage tank;

[0018] Figure 3 This is a cross-sectional three-dimensional structural diagram of the water storage tank;

[0019] Figure 4 This is a side view of the three-dimensional structure of the cleaning tank;

[0020] Figure 5A side view of the three-dimensional structure of the fixed base plate;

[0021] Figure 6 This is a cross-sectional three-dimensional structural diagram of the cooling box;

[0022] Figure 7 This is a cross-sectional three-dimensional structural diagram of the cleaning tank;

[0023] Figure 8 This is a side view of the three-dimensional structure of the cooling box.

[0024] In the diagram, 1-fixed base plate, 2-controller, 3-water storage tank, 301-first liquid level sensor, 4-water injection mechanism, 41-water storage tank, 42-first fixed frame, 43-first water pump, 44-first water pipe, 45-second water pipe, 46-second liquid level sensor, 47-third liquid level sensor, 5-spraying mechanism, 51-support frame, 52-cleaning tank, 53-second fixed frame, 54-second water pump, 55-third water pipe, 551-multiple water pipes, 56-reinforcing ring, 57-sprayer, 58-third fixed frame, 59-demister, 510-first air pipe, 511-second air pipe, 512-fourth fixed frame, 513-air extractor. 514-Third gas pipe, 515-External fixing ring, 516-Return pipe, 6-Filter mechanism, 61-Filter tank, 62-Fourth liquid level sensor, 63-Fifth fixing bracket, 64-Filter, 65-Fourth water pipe, 66-Fifth water pipe, 67-Sixth fixing bracket, 68-Third water pump, 69-Sixth water pipe, 7-Gas cooling mechanism, 71-Cooling box, 72-Cooling tank, 73-Gas guide pipe, 74-Gas outlet pipe, 75-Temperature sensor, 76-Fifth liquid level sensor, 77-Drain pipe, 78-Electric valve, 79-Cooler, 710-Sixth fixing bracket, 711-Fourth water pump, 712-Seventh water pipe, 713-Eighth water pipe. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0026] like Figures 1 to 8 The household waste pyrolysis exhaust gas spray dust removal equipment shown in this utility model includes a fixed base plate 1, a controller 2 installed on the fixed base plate 1, a water storage tank 3 fixedly connected to the fixed base plate 1, a water injection mechanism 4 provided on the fixed base plate 1, a spraying mechanism 5 provided on the fixed base plate 1, a filtration mechanism 6 provided on the fixed base plate 1, and a gas cooling mechanism 7 provided on the fixed base plate 1.

[0027] The water storage tank 3 is equipped with a first liquid level sensor 301, which is used to detect the liquid level of the aqueous solution inside the water storage tank 3.

[0028] The water injection mechanism 4 includes a water tank 41, a first fixed frame 42, a first water pump 43, a first water pipe 44, a second water pipe 45, a second liquid level sensor 46, and a third liquid level sensor 47. The water tank 41 is fixedly connected to the fixed base plate 1. The first fixed frame 42 is fixedly connected to the water tank 41. The first water pump 43 is fixedly installed on the first fixed frame 42. The first water pump 43 is connected to the water tank 41 by the first water pipe 44. The first water pump 43 is connected to the water tank 41 by the second water pipe 45. The second liquid level sensor 46 and the third liquid level sensor 47 are installed inside the water tank 41. The third liquid level sensor 47 is located above the second liquid level sensor 46. Both the second liquid level sensor 46 and the third liquid level sensor 47 are used to detect the liquid level of the aqueous solution inside the water tank 41.

[0029] The spraying mechanism 5 includes a support frame 51, a cleaning tank 52, a second fixed frame 53, a second water pump 54, a third water pipe 55, multiple water pipes 551, reinforcing rings 56, a sprayer 57, a third fixed frame 58, a demister 59, a first air pipe 510, a second air pipe 511, a fourth fixed frame 512, an air extractor 513, a third air pipe 514, an external fixing ring 515, and a return pipe 516. The support frame 51 is fixedly connected to the base plate 1, and the cleaning tank 52 is fixedly connected to the support frame 51. The second fixed frame 53 is fixedly connected to the water tank 41, and the second water pump 54 is fixedly installed on the second fixed frame 53. The second water pump 51 is connected to the water tank 41 by the third water pipe 55, and the second water pump 54 is connected to the cleaning tank 51 by multiple water pipes 551. Multiple reinforcing rings 56 are fixedly connected inside the cleaning tank 52. A sprayer 57 is installed, which is connected to a multi-pipe water system 551. The aqueous solution sprayed by the sprayer 57 is used to clean impurities in the exhaust gas. A third mounting bracket 58 is fixedly connected to the cleaning tank 52, and a demister 59 is fixedly installed on the third mounting bracket 58. The demister 59 is used to remove liquid droplets and mist entrained in the exhaust gas. A first air pipe 510 is connected between the demister 59 and the cleaning tank 52. A second air pipe 511 is connected to the demister 59. A fourth mounting bracket 512 is fixedly connected to the cleaning tank 52, and an exhaust fan 513 is fixedly installed on the fourth mounting bracket 512. The exhaust fan 513 is connected to the second air pipe 511. A third air pipe 514 is connected to the exhaust fan 513. Two external fixing rings 515 are fixedly connected to the cleaning tank 52, and a return pipe 516 is connected between the two external fixing rings 515. The return pipe 516 is connected to the demister 59.

[0030] The filtration mechanism 6 includes a filter tank 61, a fourth liquid level sensor 62, a fifth fixing frame 63, a filter 64, a fourth water pipe 65, a fifth water pipe 66, a sixth fixing frame 67, a third water pump 68, and a sixth water pipe 69. The filter tank 61 is fixedly connected to the base plate 1. The fourth liquid level sensor 62 is installed inside the filter tank 61 to detect the liquid level of the aqueous solution inside the filter tank 61. The fifth fixing frame 63 is fixedly connected to the base plate 1. The filter 64 is fixedly installed on the fifth fixing frame 63 to filter impurities in the wastewater. The fourth water pipe 65 connects the filter 64 to the filter tank 61. The sixth fixing frame 67 is fixedly connected to the base plate 1. The third water pump 68 is fixedly installed on the sixth fixing frame 67. The fifth water pipe 66 connects the third water pump 68 to the filter 64. The sixth water pipe 69 connects the third water pump 68 to the water storage tank 41.

[0031] The gas cooling mechanism 7 includes a cooling box 71, a cooling tank 72, a gas guide pipe 73, a gas outlet pipe 74, a temperature sensor 75, a fifth liquid level sensor 76, a drain pipe 77, an electric valve 78, a cooler 79, a sixth fixing frame 710, a fourth water pump 711, a seventh water pipe 712, and an eighth water pipe 713. The cooling box 71 is fixedly connected to the base plate 1. The cooling tank 72 is fixedly connected inside the cooling box 71. A gas guide pipe 73 connects the cooling tank 72 to the cooling box 71. A gas outlet pipe 74 connects the cooling tank 72 to the cooling box 71 and is connected to a cleaning tank 52. A temperature sensor 75 is installed inside the cooling box 71. The temperature sensor 75 is used for… The cooling tank 71 is equipped with a fifth liquid level sensor 76 to detect the liquid level of the aqueous solution inside the cooling tank 71. A drain pipe 77 is fixedly connected to the cooling tank 71, and an electric valve 78 is installed on the drain pipe 77. A cooler 79 is installed on the cooling tank 71 to cool the aqueous solution inside the cooling tank 71. A sixth fixing bracket 710 is fixedly connected to the water storage tank 3, and a fourth water pump 711 is fixedly installed on the sixth fixing bracket 710. A seventh water pipe 712 connects the fourth water pump 711 to the water storage tank 3, and an eighth water pipe 713 connects the fourth water pump 711 to the cooling tank 71.

[0032] The demister 59 is of the following types: baffle plate, wire mesh, or cyclone.

[0033] A buzzer is installed on controller 2.

[0034] The working principle of this utility model is as follows: After injecting an appropriate amount of aqueous solution into the water storage tank and the cooling tank respectively, the first water pump is controlled to extract the aqueous solution in the water storage tank, so that the aqueous solution enters the water storage tank through the first water pipe and the second water pipe. When the liquid level of the aqueous solution in the water storage tank reaches the preset threshold of the third liquid level sensor, the first water pump is controlled to stop working, thereby completing the extraction of the aqueous solution.

[0035] After the exhaust gas is guided into the cooling tank through the vent pipe, the aqueous solution inside the cooling tank exchanges heat with the exhaust gas, thereby reducing the temperature of the exhaust gas. This prevents the aqueous solution from evaporating instantly if the high-temperature exhaust gas is directly sprayed, and the cooling also helps the tar to condense. When the temperature of the aqueous solution inside the cooling tank reaches the preset threshold of the temperature sensor, the cooler is controlled to cool the aqueous solution, preventing the aqueous solution temperature from being too high and affecting the cooling effect of the exhaust gas. The cooled exhaust gas enters the cleaning tank through the exhaust pipe. The second water pump draws the aqueous solution from the storage tank, so that the aqueous solution enters the sprayer through the third water pipe and multiple water pipes. The sprayer then sprays the aqueous solution... The exhaust gas is atomized into fine droplets or forms a water curtain to spray and wash it. This allows smaller particles in the exhaust gas to be captured by the droplets, forming wastewater that flows to the bottom of the washing tank. The wastewater then flows through the bottom of the washing tank into the filter tank. The wet exhaust gas, after being sprayed and washed, is drawn in by the exhaust fan and enters the demister through the first air pipe. The demister removes droplets and mist entrained in the exhaust gas, preventing them from entering subsequent pipes and equipment and causing corrosion and blockage. The droplets captured by the demister flow back into the filter tank through the return pipe. The exhaust gas, after being dried by the demister, enters the next treatment unit through the second and third air pipes.

[0036] When the wastewater level in the filter tank reaches the preset threshold of the fourth level sensor, the third water pump is controlled to extract the wastewater, which then flows into the filter through the fourth water pipe. The filter removes impurities from the wastewater, and the filtered water returns to the storage tank through the fifth and sixth water pipes, thus achieving water recycling. When the water level in the cooling tank is lower than the preset threshold of the fifth level sensor, the fourth water pump is controlled to extract the water from the storage tank, which then enters the cooling tank through the seventh and eighth water pipes, thus replenishing the water supply.

[0037] When the water level in the storage tank is lower than the preset threshold of the first level sensor, the buzzer is activated to remind staff to replenish the water. When the water level in the storage tank is lower than the preset threshold of the second level sensor, the first water pump is activated to draw water from the storage tank, allowing the water to enter the storage tank through the first and second water pipes. When the water level in the storage tank reaches the preset threshold of the third level sensor, the first water pump is activated to stop working.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dust removal device for pyrolysis exhaust gas from municipal solid waste, characterized in that: The municipal solid waste pyrolysis exhaust gas spray dust removal equipment includes a fixed base plate, a controller installed on the fixed base plate, a water storage tank fixedly connected to the fixed base plate, a water injection mechanism, a spraying mechanism, a filtration mechanism, and a gas cooling mechanism.

2. The municipal solid waste pyrolysis exhaust gas spray dust removal equipment according to claim 1, characterized in that: The first liquid level sensor is installed inside the water storage tank.

3. The municipal solid waste pyrolysis exhaust gas spray dust removal equipment according to claim 1, characterized in that: The water injection mechanism includes a water tank, a first fixed frame, a first water pump, a first water pipe, a second water pipe, a second liquid level sensor, and a third liquid level sensor. The water tank is fixedly connected to the fixed base plate, the first fixed frame is fixedly connected to the water tank, the first water pump is fixedly installed on the first fixed frame, the first water pump is connected to the water tank by a first water pipe, the first water pump is connected to the water tank by a second water pipe, the second liquid level sensor is installed inside the water tank, and the third liquid level sensor is installed inside the water tank, with the third liquid level sensor located above the second liquid level sensor.

4. The municipal solid waste pyrolysis exhaust gas spray dust removal equipment according to claim 1, characterized in that: The spraying mechanism includes a support frame, a cleaning tank, a second fixed frame, a second water pump, a third water pipe, multiple water pipes, a reinforcing ring, a sprayer, a third fixed frame, a demister, a first air pipe, a second air pipe, a fourth fixed frame, an air extractor, a third air pipe, an external fixing ring, and a return pipe. The support frame is fixedly connected to the base plate, and the cleaning tank is fixedly connected to the support frame. The second fixed frame is fixedly connected to the water tank, and the second water pump is fixedly installed on the second fixed frame. A third water pipe connects the second water pump to the water tank, and multiple water pipes connect the second water pump to the cleaning tank. The cleaning tank is internally fixed. The system is connected to multiple reinforcing rings, with sprayers installed between them. The sprayers are connected to multiple water pipes. A third mounting bracket is fixedly connected to the cleaning tank, and a demister is fixedly installed on the third mounting bracket. A first air pipe connects the demister to the cleaning tank, and a second air pipe connects to the demister. A fourth mounting bracket is fixedly connected to the cleaning tank, and an air extractor is fixedly installed on the fourth mounting bracket. The air extractor is connected to the second air pipe, and a third air pipe connects to the air extractor. Two external mounting rings are fixedly connected to the cleaning tank, and a return pipe connects between the two external mounting rings. The return pipe connects to the demister.

5. The municipal solid waste pyrolysis exhaust gas spray dust removal equipment according to claim 1, characterized in that: The filtration mechanism includes a filter tank, a fourth liquid level sensor, a fifth mounting bracket, a filter, a fourth water pipe, a fifth water pipe, a sixth mounting bracket, a third water pump, and a sixth water pipe. The filter tank is fixedly connected to the base plate, and the fourth liquid level sensor is installed inside the filter tank. The fifth mounting bracket is fixedly connected to the base plate, and the filter is fixedly installed on the fifth mounting bracket. The fourth water pipe connects the filter to the filter tank. The sixth mounting bracket is fixedly connected to the base plate, and the third water pump is fixedly installed on the sixth mounting bracket. The fifth water pipe connects the third water pump to the filter, and the sixth water pipe connects the third water pump to the water storage tank.

6. The municipal solid waste pyrolysis exhaust gas spray dust removal equipment according to claim 1, characterized in that: The gas cooling mechanism includes a cooling box, a cooling tank, a gas guide pipe, a gas outlet pipe, a temperature sensor, a fifth liquid level sensor, a drain pipe, an electric valve, a cooler, a sixth fixed frame, a fourth water pump, a seventh water pipe, and an eighth water pipe. The cooling box is fixedly connected to the base plate. The cooling tank is fixedly connected inside the cooling box. A gas guide pipe connects the cooling tank and the cooling box. A gas outlet pipe connects the cooling tank and the cooling box. The gas outlet pipe connects to a cleaning tank. A temperature sensor and a fifth liquid level sensor are installed inside the cooling box. A drain pipe is fixedly connected to the cooling box. An electric valve is installed on the drain pipe. A cooler is installed on the cooling box. A sixth fixed frame is fixedly connected to the water storage tank. A fourth water pump is fixedly installed on the sixth fixed frame. A seventh water pipe connects the fourth water pump to the water storage tank. An eighth water pipe connects the fourth water pump to the cooling box.

7. The municipal solid waste pyrolysis exhaust gas spray dust removal equipment according to claim 4, characterized in that: The types of demisters are baffle plate type, wire mesh type or cyclone type.

8. The municipal solid waste pyrolysis exhaust gas spray dust removal equipment according to claim 1, characterized in that: A buzzer is installed on the controller.

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