A sludge biomass char in-situ deodorization device integrated in a drying process

Abstract

This invention relates to the field of sludge treatment and environmental deodorization technology, specifically to an in-situ deodorization device for sludge biochar integrated into the drying process. The device includes a support frame, a sludge drying and deodorization reaction mechanism, and a tail gas purification mechanism. The sludge drying and deodorization reaction mechanism is fixedly connected to the inside of the support frame, and the tail gas purification mechanism is fixedly connected to the outer surface of the sludge drying and deodorization reaction mechanism. In this invention, the integrated and synergistic effect of sludge drying and in-situ deodorization is achieved through the arrangement of a spiral heating tube, an inner wall scraper, an air distribution plate, and a sealing gasket. The spiral heating tube is installed in a spiral shape, ensuring sludge drying efficiency while preventing excessive volatilization of odorous substances. Simultaneously, the spiral structure increases the heating area, ensuring uniform sludge drying. The inner wall scraper, in conjunction with the spiral mixing plate, thoroughly cleans sludge scale from the inner wall of the drying tank, preventing scale from affecting drying efficiency, and simultaneously promotes uniform sludge movement, improving the drying effect.

Description

Technical Field

[0001] This invention relates to the field of sludge treatment and environmental deodorization technology, and in particular to an in-situ deodorization device for sludge biochar integrated into the drying process. Background Technology

[0002] Sludge is a solid waste generated during wastewater treatment. It contains a large amount of organic matter, pathogenic microorganisms, heavy metals, and other harmful substances. Improper handling can cause serious environmental pollution. Sludge drying is a key step in the reduction, harmlessness, and resource utilization of sludge. By removing water from the sludge, its volume can be significantly reduced, facilitating subsequent landfilling, incineration, or resource utilization.

[0003] In existing technical solutions, sludge drying and deodorization devices are mostly arranged separately, with the odorous gases generated during drying being transported to separate deodorization equipment via long-distance pipelines for treatment. This approach suffers from problems such as large equipment footprint, complex pipeline laying, high risk of condensate blockage due to temperature drop during gas transportation, high risk of leakage at pipeline joints, and delayed deodorization. Furthermore, the equipment investment and operating costs are high, and significant waste heat loss during drying makes it difficult to achieve efficient and simultaneous deodorization.

[0004] To address the aforementioned problems, this invention provides an in-situ deodorization device for sludge biochar integrated into the drying process. Summary of the Invention

[0005] The purpose of this invention is to solve the problems of disconnection between sludge drying and deodorization processes, pipeline condensation and blockage, low waste heat utilization rate, and easy leakage of odorous gases in the existing technology, and to propose an in-situ deodorization device for sludge biochar integrated into the drying process.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an in-situ deodorization device for sludge biochar integrated into the drying process, comprising a support frame, a sludge drying and deodorization reaction mechanism, and an exhaust gas purification mechanism, wherein the sludge drying and deodorization reaction mechanism is fixedly installed inside the support frame, and the exhaust gas purification mechanism is connected to the sludge drying and deodorization reaction mechanism.

[0007] The sludge drying and deodorization reaction mechanism includes a sludge drying component and a closed deodorization component. The sludge drying component is located above the closed deodorization component. The sludge drying component includes a drying tank, a spiral heating tube, a filter grid, and an inner wall scraper. The drying tank is fixedly connected to the top of the support frame. A first motor is fixedly connected to one end of the drying tank, and a rotating shaft is fixedly connected to the output end of the first motor. The inner wall scraper is fixedly connected to both ends of the outer surface of the rotating shaft. A spiral mixing plate is fixedly connected to the outer surface of the rotating shaft. The outer edge of the inner wall scraper slides against the inner wall of the drying tank, and a gap is left between the outer edge of the spiral mixing plate and the inner wall of the drying tank.

[0008] The sealed deodorization assembly includes a deodorization tank, a stirring shaft, an air distribution plate, and a small-pore filter layer. The deodorization tank is fixedly connected to the bottom of the support frame, the stirring shaft is rotatably connected to the inside of the deodorization tank, and the small-pore filter layer is fixedly connected to the inside of the air distribution plate.

[0009] Compared with the prior art, the advantages and positive effects of the present invention are as follows: This invention achieves integrated and synergistic sludge drying and in-situ deodorization by placing the sludge drying component above the sealed deodorization component. The integrated arrangement reduces heat loss, and the drying heat is concentrated in the drying tank for efficient heating of the sludge. At the same time, odorous gases can be directly introduced into the deodorization unit via a short path, reducing the risk of condensation blockage and leakage caused by pipeline transportation.

[0010] The spiral heating tubes are installed in a spiral shape on the inner wall of the drying tank, increasing the heating area and ensuring uniform drying. The inner wall scraper works in conjunction with the spiral mixing plate; the scraper adheres to the wall to clean up accumulated material, while the spiral mixing plate leaves gaps to transport sludge, preventing sludge adhesion from affecting drying efficiency. The gas distribution plate evenly disperses the odorous gases generated during drying into the biochar deodorizing packing, and the stirring shaft drives the packing and sludge to mix thoroughly. The sealing gaskets, combined with the tightening of the connecting bolts, effectively enhance the sealing at the connection between the drying tank and the deodorizing tank. The deep adsorption tower, induced draft fan, and gas filter plate work together to achieve deep purification of the exhaust gas. Attached Figure Description

[0011] Figure 1 This invention presents a three-dimensional structural schematic diagram of an in-situ deodorization device for sludge biochar integrated into a drying process. Figure 2 This invention presents a schematic diagram of the gas filter plate in an in-situ deodorization device for sludge biochar integrated into a drying process. Figure 3 This invention proposes an in-situ deodorization device for sludge biochar integrated into the drying process. Figure 2 Enlarged view of point A; Figure 4This invention presents a schematic diagram of a spiral mixing structure in an in-situ deodorization device for sludge biochar integrated into a drying process. Figure 5 This invention presents a schematic diagram of the sealing gasket structure in an in-situ deodorization device for sludge biochar integrated into a drying process. Figure 6 This invention proposes an in-situ deodorization device for sludge biochar integrated into the drying process. Figure 5 Enlarged view of point B; Figure 7 This invention presents a frontal structural diagram of an in-situ deodorization device for sludge biochar integrated into a drying process.

[0012] Legend: 1. Support frame; 2. Sludge drying and deodorization reaction mechanism; 21. Sludge drying component; 211. Spiral heating tube; 212. Filter grid; 213. Inner wall scraper; 214. Drying tank; 215. First motor; 216. Rotating shaft; 217. Spiral mixing plate; 218. Mounting groove; 219. Temperature sensor controller; 2191. Feed funnel; 22. Sealed deodorization component; 221. Stirring shaft; 22 2. Air distribution plate; 223. Small aperture filter layer; 224. Deodorization tank; 225. Second motor; 226. Air inlet connection port; 23. Sealing gasket; 24. Material conveying channel; 25. Blocking plate; 26. Discharge port; 27. Connecting bolt; 3. Tail gas purification mechanism; 31. Air outlet pipe; 32. Connecting main pipe; 33. Deep adsorption tower; 34. Exhaust fan; 35. Filter; 36. Gas filter plate; 37. Blocking plate. Detailed Implementation

[0013] 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. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0014] Please see Figure 1-7 The present invention provides a technical solution: an in-situ deodorization device for sludge biochar integrated into the drying process, comprising a support frame 1, a sludge drying and deodorization reaction mechanism 2, and an exhaust gas purification mechanism 3. The sludge drying and deodorization reaction mechanism 2 is fixedly connected to the inside of the support frame 1, and the exhaust gas purification mechanism 3 is fixedly connected to the outer surface of the sludge drying and deodorization reaction mechanism 2.

[0015] The sludge drying and deodorization reaction mechanism 2 includes a sludge drying component 21 and a closed deodorization component 22. The sludge drying component 21 is located above the closed deodorization component 22. The sludge drying component 21 includes a spiral heating tube 211, a filter grid 212, and an inner wall scraper 213. The closed deodorization component 22 includes a stirring shaft 221, an air distribution plate 222, and a small-pore filter layer 223.

[0016] The sludge drying assembly 21 also includes a drying tank 214 fixedly connected to the top of the support frame 1. A first motor 215 is fixedly connected to one end of the drying tank 214, and a rotating shaft 216 is fixedly connected to the output end of the first motor 215. An inner wall scraper 213 is fixedly connected to both ends of the outer surface of the rotating shaft 216, and a spiral mixing plate 217 is fixedly connected to the outer surface of the rotating shaft 216. The outer edge of the inner wall scraper 213 slides against the inner wall of the drying tank 214, and the outer edge of the spiral mixing plate 217 leaves a gap with the inner wall of the drying tank 214. The inner wall scraper 213 and the spiral mixing plate 217 cooperate to clean up accumulated material.

[0017] The inner wall of the drying tank 214 has an installation groove 218. A spiral heating tube 211 is fixedly connected to the inside of the installation groove 218. The spiral heating tube 211 is spirally installed on the inner wall of the drying tank 214. Temperature sensing controllers 219 are fixedly connected to both ends of the spiral heating tube 211. The outer surface of the temperature sensing controllers 219 is fixedly connected to the outer surface of the drying tank 214. A feed funnel 2191 is fixedly connected to the top of the drying tank 214, and a filter grid 212 is snapped into the inside of the feed funnel 2191.

[0018] The sealed deodorization assembly 22 also includes a deodorization tank 224 fixedly connected to the bottom of the support frame 1. A second motor 225 is fixedly connected to one side of the outer surface of the deodorization tank 224. One end of the stirring shaft 221 is fixedly connected to the output end of the second motor 225, and the other end of the stirring shaft 221 is rotatably connected to the inside of the deodorization tank 224. A small-pore filter layer 223 is fixedly connected to the inside of the air distribution plate 222. The air distribution plate 222 is used to disperse the malodorous gas generated by the drying tank 214 to the biochar packing inside the deodorization tank 224. An air inlet 226 is fixedly connected to the other end of the deodorization tank 224.

[0019] The sludge drying and deodorization reaction mechanism 2 also includes a conveying channel 24 fixedly connected between the deodorization tank 224 and the drying tank 214. A blocking plate 25 is slidably connected inside the conveying channel 24, and a discharge port 26 is fixedly connected to the bottom of the deodorization tank 224. The sludge drying and deodorization reaction mechanism 2 also includes sealing gaskets 23 snapped into both ends of the deodorization tank 224 and the drying tank 214. The sealing gaskets 23 are snapped into the gaps at the ends of the deodorization tank 224 and the drying tank 214, and connecting bolts 27 are threadedly connected to the outer surfaces of both ends of the deodorization tank 224 and the drying tank 214.

[0020] The exhaust gas purification mechanism 3 also includes an outlet pipe 31 fixedly connected to the other end of the deodorization tank 224 and the drying tank 214. The other end of the outlet pipe 31 is fixedly connected to a connecting main pipe 32, and a deep adsorption tower 33 is fixedly connected to the bottom of the connecting main pipe 32. An induced draft fan 34 is fixedly connected to one side of the outer surface of the connecting main pipe 32, and a filter 35 is threadedly connected to the other side of the outer surface of the connecting main pipe 32. Gas filter plates 36 with different pore sizes are fixedly connected inside the filter 35, and a sealing plate 37 is threadedly connected to the outer surface of the filter 35.

[0021] Working Principle: First, the sludge to be treated is fed into the drying tank 214 through the feed funnel 2191. During the feeding process, the filter grid 212 filters out large impurities in the sludge. Then, the first motor 215 and the spiral heating tube 211 are started. The first motor 215 drives the rotating shaft 216 to rotate, which in turn drives the spiral mixing plate 217 and the inner wall scraper 213. The spiral mixing plate 217 moves the sludge at a uniform speed inside the drying tank 214 and mixes it thoroughly. The inner wall scraper 213 scrapes away accumulated sludge from the inner wall of the drying tank 214 in real time. The spiral heating tube 211 continuously provides heat to ensure uniform drying of the sludge. The integrated upper and lower arrangement reduces heat loss, concentrating heat within the drying tank 214 for efficient heating of the sludge.

[0022] After drying, the blocking plate 25 is manually opened, and the dried sludge enters the deodorization tank 224 under gravity through the conveying channel 24. The biochar deodorizing packing material inside the deodorization tank 224 comes into contact with the sludge. Simultaneously, the second motor 225 is started, driving the stirring shaft 221 to rotate, ensuring thorough mixing of the sludge and biochar deodorizing packing material to achieve deodorization. The induced draft fan 34 is then started, sequentially sending the exhaust gas into the filter 35 and the deep adsorption tower 33 for deep purification before being discharged in compliance with standards.

[0023] The above embodiments describe the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Modifications and variations made by those skilled in the art without departing from the spirit and scope of the invention should be within the protection scope of the appended claims.

Claims

1. A sludge biochar in-situ deodorization device integrated into the drying process, comprising a support frame (1), a sludge drying and deodorization reaction mechanism (2) and a tail gas purification mechanism (3), wherein the sludge drying and deodorization reaction mechanism (2) is fixedly connected to the inside of the support frame (1), and the tail gas purification mechanism (3) is fixedly connected to the outer surface of the sludge drying and deodorization reaction mechanism (2). Its features are: The sludge drying and deodorization reaction mechanism (2) includes a sludge drying component (21) and a closed deodorization component (22), wherein the sludge drying component (21) is located above the closed deodorization component (22); The sludge drying assembly (21) includes a drying tank (214), a spiral heating tube (211), a filter grid (212), and an inner wall scraper (213). The drying tank (214) is fixedly connected to the top of the support frame (1). A first motor (215) is fixedly connected to one end of the drying tank (214). A rotating shaft (216) is fixedly connected to the output end of the first motor (215). The inner wall scraper (213) is fixedly connected to both ends of the outer surface of the rotating shaft (216). A spiral mixing plate (217) is fixedly connected to the outer surface of the rotating shaft (216). The outer edge of the inner wall scraper (213) slides against the inner wall of the drying tank (214). The outer edge of the spiral mixing plate (217) leaves a gap with the inner wall of the drying tank (214). The sealed deodorization assembly (22) includes a deodorization tank (224), a stirring shaft (221), an air distribution plate (222), and a small-pore filter layer (223). The deodorization tank (224) is fixedly connected to the bottom of the support frame (1), the stirring shaft (221) is rotatably connected to the inside of the deodorization tank (224), and the small-pore filter layer (223) is fixedly connected to the inside of the air distribution plate (222).

2. The sludge biochar in-situ deodorization device integrated into the drying process according to claim 1, characterized in that: The inner wall of the drying tank (214) is provided with an installation groove (218). The spiral heating tube (211) is fixedly connected to the inside of the installation groove (218). The spiral heating tube (211) is spirally installed on the inner wall of the drying tank (214). Temperature sensing controllers (219) are fixedly connected to both ends of the spiral heating tube (211). The outer surface of the temperature sensing controller (219) is fixedly connected to the outer surface of the drying tank (214). The top of the drying tank (214) is fixedly connected to a feed funnel (2191). The filter grid (212) is snapped into the inside of the feed funnel (2191).

3. The sludge biochar in-situ deodorization device integrated into the drying process according to claim 1, characterized in that: The sealed deodorization assembly (22) also includes a deodorization tank (224) fixedly connected to the bottom of the support frame (1). A second motor (225) is fixedly connected to one side of the outer surface of the deodorization tank (224). One end of the stirring shaft (221) is fixedly connected to the output end of the second motor (225). The other end of the stirring shaft (221) is rotatably connected to the inside of the deodorization tank (224). The gas distribution plate (222) is used to disperse the malodorous gas generated by the drying tank (214) to the biochar filler in the deodorization tank (224). An air inlet (226) is fixedly connected to the other end of the deodorization tank (224).

4. The sludge biochar in-situ deodorization device integrated into the drying process according to claim 1, characterized in that: The sludge drying and deodorizing reaction mechanism (2) also includes a material conveying channel (24) fixedly connected between the deodorizing tank (224) and the drying tank (214). The material conveying channel (24) is slidably connected with a blocking plate (25), and the bottom of the deodorizing tank (224) is fixedly connected with a discharge port (26).

5. The sludge biochar in-situ deodorization device integrated into the drying process according to claim 1, characterized in that: The sludge drying and deodorizing reaction mechanism (2) also includes sealing gaskets (23) that are snapped into both ends of the deodorizing tank (224) and the drying tank (214). The sealing gaskets (23) are snapped into the gap at the connection between the ends of the deodorizing tank (224) and the drying tank (214). The outer surfaces of both ends of the deodorizing tank (224) and the drying tank (214) are threaded with connecting bolts (27).

6. The sludge biochar in-situ deodorization device integrated into the drying process according to claim 1, characterized in that: The exhaust gas purification mechanism (3) also includes an exhaust pipe (31) fixedly connected to the other end of the deodorization tank (224) and the drying tank (214). The other end of the exhaust pipe (31) is fixedly connected to a connecting main pipe (32), and the bottom of the connecting main pipe (32) is fixedly connected to a deep adsorption tower (33).

7. The sludge biochar in-situ deodorization device integrated into the drying process according to claim 6, characterized in that: A blower (34) is fixedly connected to one side of the outer surface of the main connecting pipe (32), and a filter (35) is threadedly connected to the other side of the outer surface of the main connecting pipe (32). A gas filter plate (36) with different pore sizes is fixedly connected inside the filter (35), and a sealing plate (37) is threadedly connected to the outer surface of the filter (35).

8. The sludge biochar in-situ deodorization device integrated into the drying process according to claim 1, characterized in that: The outlet pipe of the drying tank (214) and the outlet pipe of the deodorizing tank (224) are both connected to the exhaust gas purification mechanism (3), and the air inlet of the air distribution plate (222) is connected to the inner cavity of the drying tank (214).

9. The sludge biochar in-situ deodorization device integrated into the drying process according to claim 1, characterized in that: The drying tank (214) and the deodorizing tank (224) are connected by an inclined conveying channel (24), and the dried sludge is conveyed to the deodorizing tank (224) by gravity.

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