Solid waste pyrolysis device for environmental governance

Abstract

The utility model discloses a kind of solid waste pyrolysis devices for environmental governance, belong to solid waste treatment equipment technical field, including stirring mechanism, purification mechanism and filtering mechanism, purification mechanism includes spray tank, filtering mechanism includes the water suction pump being set in the bottom of spray tank, filter pipe, filter barrel and water storage barrel connected in turn, and additionally provided with water suction pump, the liquid in water storage barrel is pumped back to the spray head in spray tank by this water suction pump, thereby forming closed circulation loop to collect, filter, reuse spray liquid.The utility model circulates by multistage filtration and purification to spray liquid, solve the problem that water resource consumption is big in prior art flue gas spray purification system, purification waste liquid is easy to cause secondary pollution, reach the effect of saving water resource, reducing environmental pollution and realizing efficient flue gas purification.

Description

Technical Field

[0001] This utility model relates to the technical field of solid waste treatment equipment, and in particular to a solid waste pyrolysis device for environmental remediation. Background Technology

[0002] With rapid industrialization and urbanization, the amount of solid waste has increased dramatically, putting enormous pressure on the environment. Pyrolysis, as an effective technology for reducing and harmlessly treating solid waste, has been widely used by decomposing waste at high temperatures.

[0003] However, the pyrolysis of solid waste inevitably produces turbid flue gas containing dust, acidic gases, and other harmful substances. To comply with increasingly stringent environmental emission standards, existing pyrolysis units are typically equipped with flue gas purification systems. Wet scrubbing is a common flue gas purification method, which effectively removes particulate matter and harmful gases by spraying liquids (such as water or alkaline solutions) onto the flue gas.

[0004] While wet scrubbing can achieve good flue gas purification results, this process itself also introduces new problems. After sufficient contact with the flue gas, the liquid used in the scrubbing process absorbs and dissolves a large amount of pollutants, transforming itself into polluting wastewater. In existing technical solutions, this pollutant-rich wastewater is often directly discharged or only undergoes simple sedimentation treatment before discharge. This not only results in a huge waste of precious water resources, but also poses a risk of secondary pollution to water bodies and soil, contradicting the original intention of environmental governance.

[0005] Therefore, this utility model proposes a solid waste pyrolysis device for environmental remediation to address the shortcomings of existing technologies. Utility Model Content

[0006] Existing solid waste thermal treatment devices generate flue gas that pollutes the environment during the treatment process, and the liquid spraying system used to purify the flue gas has high water consumption and the purified waste liquid is prone to secondary pollution. In order to achieve the above objectives, this utility model provides a solid waste pyrolysis device for environmental treatment, including: a support structure, a stirring mechanism fixed to the support structure, a flue pipe mechanism connected to the stirring mechanism, and a purification mechanism connected to the flue pipe mechanism. The purification mechanism includes a spray box, a flue pipe disposed on the top of the spray box, and a filtration mechanism.

[0007] The filtration mechanism, through the cooperation of the pump body and pipeline, connects itself with the spray box of the purification mechanism to form a closed liquid circulation purification loop.

[0008] The filtration mechanism includes a water pump located at the bottom of the spray box. The water pump is connected to the inlet end of the filter tube via a suction hose. The outlet end of the filter tube is connected to the filter bucket via a connecting pipe and a second water supply hose. The bottom of the filter bucket is connected to a water storage tank. The filtration mechanism also includes a suction pump. The suction port of the suction pump is connected to the water storage tank and is connected to the nozzle via a water supply pipe and an outlet pipe. The nozzle is located inside the spray box, thus forming a circulation path where liquid flows out of the spray box, undergoes multi-stage filtration and purification, and then returns to the spray box.

[0009] Preferably, the stirring mechanism includes a stirring tank, the outer wall of which is surrounded and fixed with a heat insulation layer and a heating ring, the top of the stirring tank has a feed inlet and the bottom has a discharge outlet, a power shaft is rotatably connected inside the stirring tank, a rotating blade is fixedly connected on the power shaft, and one end of the power shaft passes through the stirring tank and is connected to a motor for transmission.

[0010] Preferably, a fixing plate is also fixedly connected to the base plate of the support structure, and the bottom of the motor is fixed to the fixing plate.

[0011] Preferably, the smoke pipe mechanism includes a smoke pipe, one end of which is connected to the mixing tank and the other end of which is connected to the spray box. Inside the smoke pipe, along its length, are arranged an electric fan, an upper smoke filter, activated carbon, and a lower smoke filter in sequence.

[0012] Preferably, a beveled filter screen is fixedly connected inside the filter tube.

[0013] Preferably, a pull ring is fixedly connected to the top cover of the filter barrel.

[0014] Preferably, the support structure includes a base plate, the top surface of which is fixedly connected to the stirring mechanism via support blocks on both sides.

[0015] This utility model has the following beneficial effects: 1. In this utility model, by setting up a filtration mechanism, the liquid generated after the purification mechanism sprays the flue gas is collected, and multi-stage filtration and purification are carried out through the cooperation of the pump body, filter pipe, filter barrel and water storage tank. The purified liquid is then transported back to the nozzle, which solves the problem of high water consumption and easy generation of secondary waste liquid pollution in the existing flue gas scrubbing system. It achieves the effect of saving water resources, realizing the recycling of spray liquid and reducing environmental pollution.

[0016] 2. This utility model, by setting up a flue pipe mechanism and a purification mechanism, allows the flue gas generated from the heat treatment of waste to undergo activated carbon adsorption pretreatment and liquid spray washing in sequence, which solves the problem of direct emission or incomplete purification of flue gas generated by heat treatment devices in the prior art, and achieves the effect of dual purification of flue gas and significantly improves gas purification effect.

[0017] 3. This utility model, by setting up a stirring mechanism with rotating blades and an external heating ring, continuously turns and stirs the waste while heating it, which solves the problems of uneven heating and low processing efficiency when heat treating blocky waste in the prior art, and achieves the effect of fully stirring the waste and making it evenly heated, thereby improving the heat treatment efficiency. Attached Figure Description

[0018] Figure 1 This is a perspective view of a solid waste pyrolysis device for environmental remediation proposed in this utility model; Figure 2 This is a schematic diagram of the stirring mechanism of a solid waste pyrolysis device for environmental remediation proposed in this utility model; Figure 3 This is a schematic diagram of the flue pipe mechanism of a solid waste pyrolysis device for environmental remediation proposed in this utility model; Figure 4 This is a schematic diagram of the purification mechanism of a solid waste pyrolysis device for environmental remediation proposed in this utility model; Figure 5 This is a schematic diagram of the filtration mechanism of a solid waste pyrolysis device for environmental remediation proposed in this utility model.

[0019] Legend: 1. Mixing Mechanism; 101. Mixing Tank; 102. Insulation Layer; 103. Power Shaft; 104. Rotating Blades; 105. Motor; 106. Heating Ring; 107. Feed Inlet; 108. Discharge Outlet; 2. Smoke Pipe Mechanism; 201. Smoke Suction Pipe; 202. Smoke Filter; 203. Activated Carbon; 204. Electric Fan; 3. Purification Mechanism; 301. Spray Box; 302. Smoke Outlet Pipe; 4. Filtration Mechanism; 401. Water Pump; 402. Water Suction Hose; 403. Filter Pipe; 404. Connecting Pipe; 405. Slanted Filter; 406. Filter Tank; 407. Pull Ring; 408. Water Storage Tank; 409. Water Pump; 410. Water Delivery Pipe; 411. Water Discharge Pipe; 412. Spray Nozzle; 5. Support Structure; 501. Base Plate; 502. Support Block; 503. Fixing Plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Reference Figures 1-5 This utility model provides a solid waste pyrolysis device for environmental treatment, which aims to solve the problems of environmental pollution caused by flue gas generated during the treatment process of existing solid waste thermal treatment devices, and the large water consumption and secondary pollution caused by the liquid spraying system used to purify the flue gas.

[0022] Specifically, it includes a support structure 5 as the installation base, a stirring mechanism 1 fixed to the support structure 5, a flue pipe mechanism 2 connected to the stirring mechanism 1, a purification mechanism 3 connected to the flue pipe mechanism 2, and a filter mechanism 4 forming a liquid circulation loop with the purification mechanism 3. The stirring mechanism 1 is used to heat the solid waste. The flue pipe mechanism 2 outputs the flue gas generated during the heating process from the stirring mechanism 1 and transports it to the purification mechanism 3. The purification mechanism 3 sprays and washes the flue gas. The filter mechanism 4 is responsible for filtering, purifying and recycling the sprayed liquid.

[0023] The support structure 5 includes a base plate 501 and support blocks 502 fixedly connected to both sides of the top surface of the base plate 501. The stirring mechanism 1 is fixedly connected to the base plate 501 through the support blocks 502, thereby obtaining stable working support. The purification mechanism 3 includes a hollow spray box 301. Flue gas is sent into the spray box 301 through the flue pipe mechanism 2. The purified gas is discharged from the flue pipe 302 set at the top of the spray box 301. The filtration mechanism 4 and the spray box 301 of the purification mechanism 3 together form a closed liquid circulation system. The filtration mechanism 4 can draw liquid from the bottom of the spray box 301, and after its own multi-stage filtration treatment, the clean liquid is transported back to the interior of the spray box 301, thereby realizing the overall function of flue gas purification and spray liquid recycling.

[0024] It also includes a filtration mechanism 4. A water pump 401, located at the bottom of the spray box 301, serves as the power source for liquid extraction. The outlet of the water pump 401 is connected to the inlet of the filter tube 403 via a flexible suction hose 402. The suction hose 402 facilitates installation and provides shock absorption. Driven by the water pump 401, the liquid enters the filter tube 403 for primary filtration. An inclined filter screen 405 is fixedly connected inside the filter tube 403. This inclined filter screen 405 can intercept larger suspended particulate impurities in the liquid. The liquid that has undergone primary filtration exits from the filter tube 403. The liquid flows out from the outlet of filter 403 and is transported to filter tank 406 for secondary treatment through connecting pipe 404 and second water supply hose fixed on both sides of filter pipe 403. The interior of filter tank 406 is used to contain flocculant. When the liquid flows through here, the flocculant can adsorb the fine suspended impurities in the liquid and make them agglomerate into larger particles for subsequent sedimentation and separation, thereby achieving deep purification of the liquid. The liquid after secondary treatment flows from the bottom of filter tank 406 and is stored in water storage tank 408, which serves as a temporary storage container for the purified liquid.

[0025] To return the purified liquid to the spray system, the filter mechanism 4 also includes a water pump 409. The suction port of the water pump 409 is connected to a water storage tank 408 to draw clean liquid stored in the water storage tank 408. The outlet of the water pump 409 is connected to an outlet pipe 411 via a water supply pipe 410, ultimately delivering the pressurized liquid to a spray head 412. The spray head 412 is located at the top of the inside of the spray box 301 and is used to spray the flue gas newly entering the spray box 301. High-pressure atomized spraying ensures that the liquid flowing from the spray box 301 is processed and transported sequentially through the water pump 401, filter pipe 403, filter barrel 406, water storage tank 408, and suction pump 409, and finally returns to the spray box 301 through the nozzle 412, forming an automated, continuous closed-loop purification circuit. This structural design ensures that the sprayed liquid can be reused, significantly saves water resources, and effectively avoids secondary environmental pollution caused by direct discharge of waste liquid.

[0026] To achieve effective thermal treatment of solid waste, the stirring mechanism 1 includes a stirring tank 101 as the main reaction vessel. A heat insulation layer 102 and a heating ring 106 are fixedly arranged around the outer wall of the stirring tank 101. The heat insulation layer 102 is made of high-temperature resistant insulating material to reduce heat loss to the outside, improve energy utilization efficiency, and protect external components and operators. The heating ring 106 is tightly attached to the outer wall of the stirring tank 101 to continuously and uniformly heat the waste inside. To facilitate material input and output, a feed inlet 107 is provided at the top center or eccentric position of the stirring tank 101 for easy waste input. Meanwhile, a feed inlet 107 is located at the bottom of the stirring tank 101. A discharge port 108 is provided at the lowest point to facilitate the discharge of residue after heat treatment. Inside the mixing tank 101, a power shaft 103 is rotatably connected, penetrating its internal space. A plurality of rotating blades 104 are fixedly connected to the surface of the power shaft 103 along its axial and radial directions. When the power shaft 103 rotates, it can fully tumble, crush, and push the waste towards the high-temperature inner wall of the mixing tank 101 to promote heat transfer and uniform melting. One end of the power shaft 103 extends out of the side wall or top cover of the mixing tank 101 and is connected to the output shaft of the motor 105 via a coupling. The motor 105 serves as a power source, providing driving force for the rotation of the power shaft 103 and the rotating blades 104.

[0027] A fixing plate 503 is also firmly fixedly connected to the base plate 501 of the support structure 5. The fixing plate 503 serves as a dedicated mounting base. The bottom of the motor 105 is fixed to the top surface of the fixing plate 503 by bolts and other fasteners. This arrangement not only provides a stable support for the motor 105 and prevents it from vibrating or displacing during operation, but also makes the installation, disassembly and maintenance of the motor 105 more convenient.

[0028] To pretreat the flue gas, the flue pipe mechanism 2 includes a hollow smoke extraction pipe 201. One end of the smoke extraction pipe 201 is connected to the upper side wall of the mixing tank 101 via a flange or clamp, and the other end is connected to the side wall inlet of the spray box 301, forming the main channel for flue gas transportation. Inside the smoke extraction pipe 201, along the direction of flue gas flow, an electric fan 204, an upper smoke filter 202, activated carbon 203, and a lower smoke filter 202 are arranged sequentially. The electric fan 204 acts as a suction power device, generating negative pressure to move the mixing tank 101... The flue gas in section 1 is forcibly extracted and pumped to the subsequent purification unit. The upper and lower smoke filters 202 are both stainless steel wire mesh or high-temperature resistant fiber mesh. They sandwich the middle layer of activated carbon 203, forming a box-type filter structure. When the flue gas passes through, the smoke filters 202 first intercept larger dust particles in the flue gas. Then, the granular activated carbon 203 uses its huge specific surface area and porous structure to effectively adsorb organic pollutants and odor molecules in the flue gas, thereby achieving the initial purification of the flue gas.

[0029] To improve the physical filtration effect of the filtration mechanism 4, the internal structure of the filter tube 403 is specified. Inside the cylindrical filter tube 403, a beveled filter screen 405 is fixedly connected along its inner wall circumferentially. The surface of the beveled filter screen 405 forms an acute angle with the direction of liquid flow. Compared with a vertically arranged filter screen, this inclined arrangement increases the filtration area and reduces fluid resistance. At the same time, it is beneficial for the intercepted impurities to slide down the screen surface to the bottom of the filter tube 403 under the action of gravity, thus delaying the clogging of the filter screen.

[0030] To facilitate maintenance of the filter canister 406, a pull ring 407 is connected to the top cover of the filter canister 406 by welding or screws. The pull ring 407 provides a convenient gripping point for the operator. When it is necessary to add or replace flocculant into the filter canister 406, or to clean the sludge deposited in the canister, the operator can easily open the cover of the filter canister 406 by pulling the pull ring 407.

[0031] To enhance the structural rigidity and stability of the entire device, the connection method of the support structure 5 is further clarified. On the top surface of the base plate 501 of the support structure 5, on both sides of the installation position of the stirring mechanism 1, sturdy support blocks 502 are fixed by welding or bolting. The lower shell of the stirring mechanism 1 is firmly fixed to these two support blocks 502. This method of clamping and fixing on both sides ensures that the stirring mechanism 1 can remain stable when it vibrates or is impacted by the internal material turning over, and will not shake or shift, thus ensuring the reliability of the equipment operation.

[0032] Working principle: When treating solid waste, the blocky waste is first put into the mixing tank 101 through the feed port 107 of the mixing mechanism 1. Then, the motor 105 and the heating ring 106 are started. The motor 105 drives the power shaft 103 and the rotating blades 104 fixed on the power shaft 103 to rotate through the transmission connection. The rotating blades 104 continuously turn and stir the waste in the mixing tank 101. At the same time, the heating ring 106 continuously heats the mixing tank 101. Under the combined action of stirring and heating, the waste is uniformly pyrolyzed. The heat insulation layer 102 reduces heat loss in this process. The solid residue generated after treatment is discharged from the discharge port 108 at the bottom.

[0033] During the heat treatment of waste, a large amount of turbid flue gas is generated. At this time, the electric fan 204 in the flue pipe mechanism 2 is started, generating negative pressure in the smoke pipe 201, which forces the flue gas generated in the mixing tank 101 to be extracted. During the extraction process, the flue gas passes through the activated carbon 203 sandwiched between the upper and lower smoke filter screens 202. The smoke filter screen 202 can filter out larger dust particles carried in the flue gas, while the activated carbon 203 adsorbs some organic pollutants and odor molecules in the flue gas, thus achieving pretreatment of the flue gas. The pretreated flue gas is then transported to the spray box 301 of the purification mechanism 3.

[0034] When the flue gas enters the spray box 301, the nozzle 412 in the filter mechanism 4 sprays the purified liquid in the form of high-pressure mist, which comes into full contact with and mixes with the flue gas. The liquid droplets can effectively wash, dissolve and settle the remaining fine dust and soluble harmful substances in the flue gas, thereby purifying the flue gas. The relatively clean gas after purification is discharged from the flue gas outlet pipe 302 at the top of the spray box 301, while the spray liquid that has absorbed pollutants settles to the bottom of the spray box 301 due to gravity.

[0035] The liquid accumulated at the bottom of the spray box 301 initiates a filtration and circulation process. A water pump 401 located at the bottom draws out this liquid and pumps it into the filter pipe 403 through the suction hose 402. As the liquid flows through the inclined filter screen 405 inside, larger suspended impurities are intercepted, completing primary physical filtration. The liquid that has undergone preliminary filtration continues to enter the filter tank 406 containing flocculant through the connecting pipe 404. Fine impurities in the liquid are coagulated under the action of the flocculant. Subsequently, the liquid flows into the storage tank 408 for sedimentation and storage. At this time, another suction pump 409 draws the upper clean liquid from the storage tank 408 and pressurizes it again through the water supply pipe 410 and the outlet pipe 411, delivering it to the nozzle 412 inside the spray box 301. Thus, a complete liquid filtration and circulation spraying process is completed. Through this continuous circulation, the spraying liquid is reused, saving water resources and reducing the emission of secondary pollutants.

Claims

1. A solid waste pyrolysis device for environmental remediation, comprising: Support structure (5); The stirring mechanism (1) is fixed to the support structure (5); The flue mechanism (2) is connected to the stirring mechanism (1); The purification mechanism (3) is connected to the smoke pipe mechanism (2). The purification mechanism (3) includes a spray box (301) and a smoke outlet pipe (302) located on the top of the spray box (301). Its characteristic is that it further includes: The filtration mechanism (4) includes: a water pump (401) disposed at the bottom of the spray box (301), the water pump (401) being connected to the inlet end of the filter tube (403) via a water suction hose (402), the outlet end of the filter tube (403) being connected to the filter bucket (406) via a connecting pipe (404) and a second water supply hose, and the bottom of the filter bucket (406) being connected to the water storage tank (408); The filtration mechanism (4) also includes a water pump (409), which is connected to the nozzle (412) through a water supply pipe (410) and a water outlet pipe (411). The water inlet of the water pump (409) is connected to the water storage tank (408), and the nozzle (412) is located inside the spray box (301).

2. The solid waste pyrolysis device for environmental remediation according to claim 1, characterized in that, The stirring mechanism (1) includes a stirring tank (101). The outer wall of the stirring tank (101) is surrounded and fixed with a heat insulation layer (102) and a heating ring (106). The top of the stirring tank (101) is provided with a feed inlet (107) and the bottom is provided with a discharge outlet (108). The inside of the stirring tank (101) is rotatably connected to a power shaft (103). Rotating blades (104) are fixedly connected to the power shaft (103). One end of the power shaft (103) passes through the stirring tank (101) and is connected to a motor (105) for transmission.

3. The solid waste pyrolysis device for environmental remediation according to claim 2, characterized in that, The smoke pipe mechanism (2) includes a smoke pipe (201), one end of which is connected to the mixing tank (101) and the other end is connected to the spray box (301). Inside the smoke pipe (201), along its length, are arranged an electric fan (204), an upper smoke filter (202), activated carbon (203) and a lower smoke filter (202).

4. The solid waste pyrolysis device for environmental remediation according to claim 1, characterized in that, An oblique filter screen (405) is fixedly connected inside the filter tube (403).

5. The solid waste pyrolysis device for environmental remediation according to claim 1, characterized in that, A pull ring (407) is fixedly connected to the top cover of the filter barrel (406).

6. The solid waste pyrolysis device for environmental remediation according to claim 1, characterized in that, The support structure (5) includes a base plate (501), the top surface of which is fixedly connected to the stirring mechanism (1) via support blocks (502) on both sides.

7. The solid waste pyrolysis device for environmental remediation according to claim 2, characterized in that, A fixing plate (503) is also fixedly connected to the base plate (501) of the support structure (5), and the bottom of the motor (105) is fixed to the fixing plate (503).

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