A rotary kiln incineration system gaseous pollutant control device

Abstract

This utility model relates to the field of pollutant control technology and discloses a gaseous pollutant control device for a rotary kiln incineration system. The device includes a base plate, a rotary kiln, a treatment structure, and a filter structure. The rotary kiln and treatment structure are respectively mounted on the base plate. The treatment structure is connected to the rotary kiln via the filter structure. The treatment structure includes a treatment tank, a support, a top plate, a spray pipe, a circulation pump, a first connecting pipe, a second connecting pipe, a motor, and a lead screw. The treatment tank is fixedly mounted on the base plate via the support. A drain valve is installed at the bottom of the treatment tank. An inlet pipe and several atomizing nozzles are installed on the spray pipe. The circulation pump connects the drain valve and the spray pipe via the first and second connecting pipes. A permeable plate is mounted on the top plate via a motor, a lead screw, and a guide rod. An outlet pipe is fixedly connected to the top plate. This utility model, through its treatment structure, ensures the full reaction of sulfur dioxide and alkaline solution, and through recycling, reduces the consumption of alkaline solution and lowers operating costs.

Description

Technical Field

[0001] This utility model relates to the field of pollutant control technology, and in particular to a gaseous pollutant control device for a rotary kiln incineration system. Background Technology

[0002] Rotary kiln incineration systems generate a large amount of waste gas during high-temperature combustion, which contains a high concentration of sulfur dioxide, causing serious environmental pollution. In order to effectively remove sulfur oxides from the waste gas, desulfurization devices are usually used. The desulfurization device reacts the sulfur dioxide in the waste gas by spraying in an alkaline solution to generate non-volatile sulfates. This reaction can not only significantly reduce the emission concentration of sulfur dioxide, but also reduce environmental pollution.

[0003] In existing technologies, the waste gas after incineration is generally introduced into a reaction vessel, and then alkaline solution is injected to react with the waste gas. However, due to the lack of a mechanism to enhance gas-liquid contact, the gas-liquid contact area may be insufficient, the reaction time may be short, resulting in low desulfurization efficiency. The alkaline solution that has not been fully reacted needs to be replaced or replenished frequently, which increases material consumption and operating costs. Utility Model Content

[0004] In view of the above-mentioned problems that the existing methods lack a mechanism to enhance gas-liquid contact, which may lead to insufficient gas-liquid contact area, short reaction time, low desulfurization efficiency, and the need for frequent replacement or replenishment of unreacted alkaline solution, increasing material consumption and operating costs, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a gaseous pollutant control device for a rotary kiln incineration system. The purpose is that: due to the lack of a mechanism to enhance gas-liquid contact, the gas-liquid contact area may be insufficient, the reaction time may be short, resulting in low desulfurization efficiency, and the unreacted alkali solution may need to be frequently replaced or replenished, increasing material consumption and operating costs.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a gaseous pollutant control device for a rotary kiln incineration system, comprising a bottom plate, a rotary kiln, a treatment structure, and a filter structure. The rotary kiln and the treatment structure are respectively installed on the bottom plate. The treatment structure is connected to the rotary kiln through the filter structure. The treatment structure includes a treatment tank, a support, a top plate, a spray pipe, a circulation pump, a first connecting pipe, a second connecting pipe, a motor, and a lead screw. The treatment tank is fixedly installed on the bottom plate by the support. A drain valve is installed at the bottom of the treatment tank. An inlet pipe and several atomizing nozzles are installed on the spray pipe. The circulation pump connects the drain valve and the spray pipe through the first connecting pipe and the second connecting pipe. A permeable plate is installed on the top plate through a motor, a lead screw, and a guide rod. An outlet pipe is fixedly connected to the top plate.

[0007] As a preferred embodiment of the gaseous pollutant control device of the rotary kiln incineration system of this utility model, the top plate is installed at the top of the treatment tank, and the spray pipe is fixedly installed at the top position of the inner wall of the treatment tank.

[0008] As a preferred embodiment of the gaseous pollutant control device of the rotary kiln incineration system of this utility model, the circulating pump is mounted on the bracket, the liquid inlet of the circulating pump is connected to the liquid discharge valve through the first connecting pipe, and the liquid outlet of the circulating pump is connected to the spray pipe through the second connecting pipe.

[0009] As a preferred embodiment of the gaseous pollutant control device of the rotary kiln incineration system of this utility model, the motor is fixedly installed at the top of the top plate, the lead screw is rotatably installed on the top plate, the guide rod is fixedly installed at the bottom of the top plate, the permeable plate is threaded on the lead screw, the permeable plate is penetrated by the guide rod, and the permeable plate and the guide rod are slidably connected.

[0010] As a preferred embodiment of the gaseous pollutant control device of the rotary kiln incineration system of this utility model, the filter structure includes a filter box, a first gas pipe, a second gas pipe, and a filter plate. The filter box is fixedly installed at the end of the support away from the circulating pump. One end of the filter box is connected to the rotary kiln through the first gas pipe, and the other end of the filter box is connected to the treatment tank through the second gas pipe.

[0011] As a preferred embodiment of the gaseous pollutant control device of the rotary kiln incineration system of this utility model, the inner wall of the filter box is provided with a sliding groove, the filter plate is slidably installed in the sliding groove, a sealing plate is fixedly installed on the top of the filter plate, and a handle is fixedly installed on the top of the sealing plate.

[0012] The beneficial effects of this utility model are:

[0013] 1. Through the designed treatment structure, the alkaline solution enters the spray pipe and is then sprayed out through the atomizing nozzle. The up-and-down movement of the permeable plate increases the contact area and contact time between the alkaline solution and the exhaust gas, providing more reaction surface and reaction time, thereby promoting the full reaction between sulfur dioxide and the alkaline solution. The alkaline solution is pumped back into the spray pipe by the circulating pump, and through recycling, the consumption of alkaline solution is reduced, the operating cost is reduced, and the waste of excessive alkaline solution is avoided, thus improving the resource utilization rate.

[0014] 2. Through the set filtration structure, the gas is filtered through the filter plate to remove solid impurity particles contained in the gas. This can reduce the interference of these impurities with the chemical reaction process in the desulfurization system. The filter plate can be removed by sliding it in the chute through the sealing plate. Regular cleaning of the filter plate can ensure that it always maintains its high-efficiency filtration capacity, reduce the decline in filtration effect caused by accumulated solid impurities, and reduce the cost of equipment replacement and maintenance. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a cross-sectional schematic diagram of the processing tank of this utility model;

[0018] Figure 3 This is a schematic diagram of the installation of the permeable plate of this utility model;

[0019] Figure 4 This is a schematic diagram of the filter structure of this utility model;

[0020] Figure 5 This is a cross-sectional schematic diagram of the filter box of this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Base plate; 2. Rotary kiln; 3. Processing structure; 301. Processing tank; 302. Support; 303. Top plate; 304. Spray pipe; 305. Liquid inlet pipe; 306. Circulating pump; 307. First connecting pipe; 308. Second connecting pipe; 309. Motor; 310. Lead screw; 311. Guide rod; 312. Permeable plate; 313. Air outlet pipe; 4. Filtration structure; 41. Filter box; 42. First air pipe; 43. Second air pipe; 44. Slide groove; 45. Filter plate; 46. Sealing plate. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Example 1

[0024] Refer to attached figure Figure 1 - Appendix Figure 3This is the first embodiment of the present invention, providing a gaseous pollutant control device for a rotary kiln incineration system, including a base plate 1, a rotary kiln 2, a treatment structure 3, and a filter structure 4. The rotary kiln 2 and the treatment structure 3 are respectively installed on the base plate 1. The treatment structure 3 is connected to the rotary kiln 2 through the filter structure 4. The rotary kiln 2 is existing technology. The treatment structure 3 includes a treatment tank 301, a support 302, a top plate 303, a spray pipe 304, a liquid inlet pipe 305, a circulation pump 306, a first connecting pipe 307, a second connecting pipe 308, a motor 309, and a lead screw 310. The treatment tank 301 is fixedly installed on the base plate 1 through the support 302. A drain valve is installed at the bottom end of the treatment tank 301. The top plate 303 is installed at the top end of the treatment tank 301. 04 is fixedly installed at the top of the inner wall of the treatment tank 301. Several atomizing nozzles are installed on the spray pipe 304. The liquid inlet pipe 305 and the spray pipe 304 are interconnected. The circulation pump 306 is installed on the bracket 302. The liquid inlet of the circulation pump 306 is connected to the drain valve through the first connecting pipe 307. The liquid outlet of the circulation pump 306 is connected to the spray pipe 304 through the second connecting pipe 308. The motor 309 is fixedly installed at the top of the top plate 303. The lead screw 310 is rotatably installed on the top plate 303. The bottom end of the top plate 303 is fixedly installed with the guide rod 311. The lead screw 310 is threadedly installed with the permeable plate 312. The permeable plate 312 is penetrated by the guide rod 311, and the permeable plate 312 and the guide rod 311 are slidably connected. The air outlet pipe 313 is fixedly connected to the top plate 303.

[0025] During operation, the gas from combustion in rotary kiln 2 enters the treatment tank 301 through filter structure 4. The gas contains sulfides. Alkali solution is introduced into inlet pipe 305 and then into spray pipe 304, where it is sprayed out through atomizing nozzles. The sprayed alkali solution mixes and reacts with the sulfur-containing gas, achieving desulfurization. When the alkali solution and gas mix, motor 309 is started, and the motor shaft of motor 309 drives screw 310 to rotate. Screw 310 controls permeable plate 312 to slide on guide rod 311, allowing the permeable plate 312 to pass through. The up-and-down movement of 2 enhances the contact area and contact time between the alkali solution and the waste gas, providing more reaction surface and reaction time. When there is a large amount of alkali solution at the bottom of the treatment tank 301, the alkali solution is not fully mixed with the gas. The circulation pump 306 is started to pump the alkali solution into the spray pipe 304 and then spray it out, realizing the recycling of the alkali solution, making the alkali solution and gas fully mixed, reducing the amount of alkali solution used. The gas after the reaction is discharged from the gas outlet pipe 313, and the liquid after the reaction is discharged from the liquid drain valve. Example 2

[0026] Refer to attached figure Figure 4 and attached Figure 5 This is the second embodiment of the present invention, which differs from the first embodiment in that:

[0027] The filter structure 4 includes a filter box 41, a first air pipe 42, a second air pipe 43, and a filter plate 45. The filter box 41 is fixedly installed on the end of the bracket 302 away from the circulating pump 306. One end of the filter box 41 is connected to the rotary kiln 2 through the first air pipe 42, and the other end of the filter box 41 is connected to the processing tank 301 through the second air pipe 43. The inner wall of the filter box 41 is provided with a sliding groove 44, and the filter plate 45 is slidably installed in the sliding groove 44. A sealing plate 46 is fixedly installed on the top of the filter plate 45, and a handle is fixedly installed on the top of the sealing plate 46.

[0028] During use, the gas burned in the rotary kiln 2 enters the filter box 41 through the first gas pipe 42. The gas is filtered through the filter plate 45 to remove solid impurities. The filtered gas then enters the treatment tank 301 through the second gas pipe 43. After prolonged use, the filter plate 45 becomes clogged with fixed impurities. At this time, by pulling the handle, the handle moves the filter plate 45 through the sealing plate 46 to slide in the slide groove 44, thereby removing the filter plate 45 for easy cleaning.

[0029] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A gaseous pollutant control device for a rotary kiln incineration system, characterized in that: The system includes a base plate (1), a rotary kiln (2), a processing structure (3), and a filter structure (4). The rotary kiln (2) and the processing structure (3) are respectively mounted on the base plate (1). The processing structure (3) is connected to the rotary kiln (2) through the filter structure (4). The processing structure (3) includes a processing tank (301), a support (302), a top plate (303), a spray pipe (304), a circulating pump (306), a first connecting pipe (307), a second connecting pipe (308), a motor (309), and a lead screw (310). 1) The bottom of the treatment tank (301) is fixedly installed on the base plate (1) by the bracket (302). A drain valve is installed at the bottom of the treatment tank (301). An inlet pipe (305) and several atomizing nozzles are installed on the spray pipe (304). The circulating pump (306) connects the drain valve and the spray pipe (304) through the first connecting pipe (307) and the second connecting pipe (308). A permeable plate (312) is installed on the top plate (303) through the motor (309), the lead screw (310) and the guide rod (311). An air outlet pipe (313) is fixedly connected on the top plate (303).

2. The gaseous pollutant control device for the rotary kiln incineration system according to claim 1, characterized in that: The top plate (303) is installed at the top of the treatment tank (301), and the nozzle (304) is fixedly installed at the top of the inner wall of the treatment tank (301).

3. The gaseous pollutant control device for the rotary kiln incineration system according to claim 2, characterized in that: The circulating pump (306) is mounted on the bracket (302). The inlet end of the circulating pump (306) is connected to the drain valve through the first connecting pipe (307), and the outlet end of the circulating pump (306) is connected to the nozzle (304) through the second connecting pipe (308).

4. The gaseous pollutant control device for the rotary kiln incineration system according to claim 3, characterized in that: The motor (309) is fixedly installed at the top of the top plate (303), the lead screw (310) is rotatably installed on the top plate (303), the guide rod (311) is fixedly installed at the bottom of the top plate (303), the permeable plate (312) is threaded on the lead screw (310), the permeable plate (312) is penetrated by the guide rod (311), and the permeable plate (312) and the guide rod (311) are slidably connected.

5. The gaseous pollutant control device for the rotary kiln incineration system according to claim 1, characterized in that: The filter structure (4) includes a filter box (41), a first air pipe (42), a second air pipe (43), and a filter plate (45). The filter box (41) is fixedly installed on the bracket (302) at one end away from the circulating pump (306). One end of the filter box (41) is connected to the rotary kiln (2) through the first air pipe (42), and the other end of the filter box (41) is connected to the treatment tank (301) through the second air pipe (43).

6. The gaseous pollutant control device for the rotary kiln incineration system according to claim 5, characterized in that: The inner wall of the filter box (41) is provided with a sliding groove (44), the filter plate (45) is slidably installed in the sliding groove (44), a sealing plate (46) is fixedly installed on the top of the filter plate (45), and a handle is fixedly installed on the top of the sealing plate (46).

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