A waste gas treatment equipment for butadiene styrene latex production

Abstract

The present application relates to waste gas treatment technical field, especially to a kind of waste gas treatment equipment for butyl rubber latex production;Its technical scheme includes: pipe column, processing bin interior fixedly connected with pipe column;Rotary frame, pipe column is rotatably connected with rotary frame;Air diffuser pipe, rotary frame lower part is fixedly connected with at least two groups air diffuser pipe;Gear ring, rotary frame upper part is fixedly connected with gear ring;Motor, the inside of processing bin is fixedly connected with motor;Gear, the output shaft of motor is fixedly connected with gear.The present application is by combining the treatment structure of two big functions of rotation air distribution and uniform spraying, and using the way of waste gas and absorbent convection to implement mixing, to improve the distribution uniformity of waste gas in reaction space, realize the efficient mass transfer of gas-liquid two-phase, directly solve the problem of uneven distribution, mixing insufficient, reagent short circuit loss caused by waste gas relying on natural diffusion in prior art, improve waste gas purification efficiency while significantly improve the utilization rate of absorbent.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment technology, and in particular to a waste gas treatment device for styrene-butadiene latex production. Background Technology

[0002] Styrene-butadiene rubber latex is mainly produced through emulsion polymerization, which releases process waste gases containing unreacted monomers, volatile organic compounds, and odorous gases. Direct emission of these waste gases will harm the environment and human health; therefore, waste gas treatment has become a crucial aspect of green production in this industry.

[0003] Currently, this type of waste gas treatment often employs the spray absorption method, which involves spraying liquid absorbent into the reaction chamber through a spray device, allowing it to come into contact with the waste gas and undergo a chemical reaction, thereby removing harmful components. This method mainly relies on the thorough mixing between the reagent and the waste gas to achieve efficient purification.

[0004] However, after the exhaust gas enters the reaction chamber, it mainly relies on natural diffusion and the propulsive effect of the subsequent airflow to achieve contact with the reagents. This results in uneven spatial distribution of the exhaust gas within the chamber, creating dead zones in some areas. Consequently, some of the sprayed reagents fail to mix and react fully with the exhaust gas and are discharged from the reaction chamber along with the reacted reagent waste. Clearly, this not only reduces the overall exhaust gas treatment efficiency but also leads to ineffective use of the absorbent and waste of resources, making it difficult to consistently meet environmental protection requirements for emissions. Summary of the Invention

[0005] In view of the deficiencies of the prior art mentioned above, the present invention provides a waste gas treatment device for styrene-butadiene latex production that can improve the distribution of waste gas in the reaction space and enhance the gas-liquid two-phase mixing efficiency, aiming to improve the waste gas treatment effect of styrene-butadiene latex production.

[0006] The technical solution of the present invention is as follows: a waste gas treatment device for styrene-butadiene latex production, comprising: a treatment chamber, supporting legs, an inlet pipe, an outlet pipe, and a drain pipe; the device further comprises: a pipe column, which is fixedly connected inside the treatment chamber and is fixed and connected to the inlet pipe; a rotating frame, which is rotatably connected to the pipe column and the two are internally connected; and a diffuser pipe, at least two sets of diffuser pipes are fixedly connected to the lower part of the rotating frame, each set of diffuser pipes being equidistantly arranged around the rotation axis of the rotating frame, each set containing at least two diffuser pipe sections, and arranged equidistantly on the same straight line. The end of the air pipe is angled upward; a gear ring is fixedly connected to the upper part of the rotating frame; a motor is fixedly connected inside the treatment chamber; a gear is fixedly connected to the output shaft of the motor, and the gear meshes with the gear ring; a pipe ring is fixedly connected inside the treatment chamber; at least three sets of spray nozzles are fixedly connected to the pipe ring, evenly distributed along the circumference of the pipe ring, and all spray nozzles are connected to the pipe ring, with their spray direction angled downward; a connecting pipe head is fixedly connected to the outer wall of the treatment chamber for connecting to an external pump body, and it is connected to the pipe ring.

[0007] Furthermore, it is particularly preferred that the upward-sloping section of the vent pipe is provided with a leakage hole, the side of the leakage hole facing outward is the first side, and the side facing inward is the second side, wherein the horizontal height of the first side is lower than that of the second side.

[0008] Furthermore, particularly preferably, the device further includes: a condenser rack, rotatably connected to the processing chamber, capable of rotating under drive, funnel-shaped overall, with condenser walls spaced apart on its walls for condensation, the condenser rack having at least two layers, and the condenser walls on adjacent layers of the condenser rack being staggered, with a circulating flow channel embedded inside the condenser rack; a chiller, fixedly connected to the outer wall of the processing chamber, for providing a low-temperature condensing medium; a turntable, rotatably connected to the top of the condenser rack; a pipeline, fixedly connected between the turntable and the chiller, the chiller communicating with the circulating flow channel inside the condenser rack through the pipeline and the turntable, forming a closed coolant circulation loop; and a scraper rack, fixedly connected to the inner wall of the processing chamber, with a set of scraper racks corresponding to the bottom of each layer of condenser racks, the upper edge of each set of scraper racks maintaining contact with the lower surface of the condenser wall of the corresponding condenser rack, and the overall structure of the scraper rack tilting downwards towards the center of the condenser rack.

[0009] Furthermore, it is particularly preferred that the device further includes a shaft column, which is fixedly connected between the condenser frame and the rotating frame, for synchronously transmitting the rotation drive of the rotating frame to the condenser frame.

[0010] Furthermore, it is particularly preferred that the device also includes a flow guide block, which is fixedly connected to the lowest position of the scraper, and its structure is inclined downwards in a direction away from the center of the condenser rack.

[0011] Furthermore, it is particularly preferred that the device also includes a blower, which is fixedly connected to the exhaust port to generate a stable negative pressure at the outlet of the processing chamber.

[0012] In addition, particularly preferably, the device further includes: filter cotton, which is fixedly connected to the top of the treatment chamber and located at the final position before the exhaust gas flows out, for end-point adsorption filtration of the treated exhaust gas.

[0013] Furthermore, it is particularly preferred that the joint between the tubular column and the rotating frame adopts a sealed structure.

[0014] Compared with the prior art, the present invention has the following advantages: The present invention combines the two major functions of rotating air distribution and uniform spraying in the treatment structure, and uses the convection of waste gas and absorbent to mix the two, thereby improving the uniformity of waste gas distribution in the reaction space, realizing efficient mass transfer between the gas and liquid phases, and directly solving the problems of uneven distribution, insufficient mixing, and short-circuit loss of absorbent caused by the reliance of waste gas on natural diffusion in the prior art. While improving the waste gas purification efficiency, it also significantly improves the utilization rate of absorbent.

[0015] This invention achieves efficient and continuous removal of water vapor and residual water-soluble substances from exhaust gas by combining a condensation structure with active rotary cooling and mechanical scraping functions. This effectively prevents excessive emissions caused by water vapor entrainment and liquid accumulation inside the equipment, thereby improving the exhaust gas treatment process. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of [the structure].

[0017] Figure 2 This is a sectional view of the internal structure of the processing chamber after partial cross-section.

[0018] Figure 3 This is a cross-sectional view showing the location of the processing structure within the processing chamber.

[0019] Figure 4 This is a diagram showing the separation of the connection structure in the processing structure.

[0020] Figure 5 This is a schematic diagram showing the location and structure of the central leakage hole, the first side section, and the second side section in the air distribution pipe.

[0021] Figure 6 This is a cross-sectional view showing the location and structure of the intermediate condenser within the processing chamber.

[0022] Figure 7 This is a schematic diagram of the scraper frame.

[0023] Figure 8 This is a front view of the position and structure of the scraper and condenser rack.

[0024] In the diagram: 101, processing chamber; 102, support leg; 103, air inlet pipe; 104, exhaust port; 105, blower; 106, drain pipe; 107, filter cotton; 201, tube column; 202, rotating frame; 203, air diffuser pipe; 2031, drain hole; 2032, first side; 2033, second side; 204, gear ring; 205, motor; 206, gear; 207, tube ring; 208, spray nozzle; 209, connecting pipe head; 301, shaft column; 302, condenser rack; 303, refrigerator; 304, turntable; 305, pipeline; 306, scraper rack; 307, guide block. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0026] Example: A waste gas treatment device for styrene-butadiene latex production, combined with Figures 1-2 As shown, it includes: a treatment chamber 101, which provides a sealed reaction space for waste gas treatment; support feet 102, which are fixedly installed at the bottom of the treatment chamber 101 to support and raise the treatment chamber 101 to facilitate the discharge of adsorbent waste liquid; an inlet pipe 103, which is fixedly installed at the bottom of the treatment chamber 101 to introduce the waste gas to be treated into the treatment chamber 101; an exhaust port 104, which is fixedly installed at the top of the treatment chamber 101 to discharge the treated gas; and a drain pipe 106, which is fixedly installed at the bottom of the treatment chamber 101, and the bottom surface of the treatment chamber 101 is designed with an incline, with the outlet of the drain pipe 106 connected to the lowest point of the bottom surface of the treatment chamber 101 to ensure that the adsorbent waste liquid after the reaction can be completely discharged.

[0027] When treating industrial waste gas generated during the production of styrene-butadiene latex, the waste gas is sent into the treatment chamber 101 through the inlet pipe 103. The main components of this waste gas are unreacted volatile organic compounds such as styrene and butadiene, accompanied by a small amount of water-soluble harmful gases such as hydrogen sulfide and ammonia. The absorbent is generally a water-based composite absorbent, which is based on water and contains surfactants, acid-base regulators and co-solvents. By promoting full contact between the waste gas and the absorbent in the treatment chamber 101 to carry out a chemical reaction, the organic compounds and harmful gases in the waste gas can be effectively removed. After the reaction is completed, the gas is discharged through the exhaust port 104, while the waste liquid of the absorbent is collected along the inclined inner bottom surface of the treatment chamber 101 and finally discharged from the treatment chamber 101 through the drain pipe 106.

[0028] Combination Figures 2-5 As shown, this equipment also includes a treatment structure located in the lower layer inside the treatment chamber 101, used for efficiently removing harmful components from the exhaust gas. This treatment structure includes: a pipe column 201, which is fixedly installed inside the treatment chamber 101 and is fixed and connected to the inlet pipe 103, serving as the input channel for the exhaust gas; a rotating frame 202, which is rotatably mounted on the pipe column 201, with the two internally connected and their joints sealed with high-performance sealing rings to ensure no leakage; and three sets of diffuser pipes 203, which are fixedly installed at the lower part of the rotating frame 202. These three sets of diffuser pipes 203 are equidistantly arranged around the rotation axis of the rotating frame 202, each set containing three sections of diffuser pipe 203, and are equidistantly arranged on the same straight line. The ends of each diffuser pipe 203 are angled upwards; the angled upward section of the diffuser pipe 203 is provided with a leakage hole 2031, the side of the leakage hole 2031 facing outwards being the first side 2. 032, the side facing the inside of the tube is the second side 2033, wherein the horizontal height of the first side 2032 is lower than that of the second side 2033; gear ring 204, a gear ring 204 is fixedly installed on the upper part of the rotating frame 202; motor 205, a motor 205 is fixedly installed inside the treatment chamber 101; gear 206, a gear 206 is fixedly installed on the output shaft of the motor 205, and the gear 206 meshes with the gear ring 204; tube ring 207, a tube ring 207 is fixedly installed inside the treatment chamber 101; spray nozzles 208, ten sets of spray nozzles 208 are fixedly installed on the tube ring 207, evenly distributed along the circumference of the tube ring 207, all spray nozzles 208 are connected to the tube ring 207, and their spray direction is set obliquely downward; connecting pipe head 209, a connecting pipe head 209 is fixedly installed on the outer wall of the treatment chamber 101, which is connected to the tube ring 207 and is used to connect to an external pump body to continuously pump the absorbent.

[0029] Exhaust gas is introduced through the inlet pipe 103 and the tube column 201, and initially evenly distributed to the lower space of the treatment chamber 101 through three sets of diffuser pipes 203. Simultaneously, an external pump delivers absorbent to the tube ring 207 via the connecting pipe head 209, and ten sets of downward-spraying nozzles 208 form a uniformly covered spray area. During operation, the motor 205 drives the rotating frame 202 and diffuser pipes 203 to rotate at a constant speed through the meshing of gears 206 and gear rings 204, thus achieving dynamic and uniform distribution of exhaust gas in three-dimensional space. Therefore, the upward diffusion of exhaust gas and the downward spraying of absorbent create forced convection, thereby enhancing the turbulent mixing and contact reaction of the gas-liquid two-phase flow, significantly improving the treatment efficiency of harmful substances in the exhaust gas and ensuring that the gas meets emission standards.

[0030] Given the downward-sloping arrangement of the spray nozzles 208 and the upward-sloping arrangement of the diffuser 203, a small amount of absorbent may splash into the diffuser 203. Therefore, a drain hole 2031 is provided on the diffuser 203. With the height difference between the first side 2032 and the second side 2033, it is ensured that the absorbent entering the diffuser 203 can be effectively discharged through the drain hole 2031, avoiding accumulation and residue, thereby ensuring the long-term performance of this special convection structure.

[0031] This equipment combines the functions of rotating air distribution and uniform spraying in its treatment structure. It mixes the waste gas and absorbent through convection, thereby improving the uniformity of waste gas distribution in the reaction space and achieving efficient mass transfer between the gas and liquid phases. This directly solves the problems of uneven distribution, insufficient mixing, and short-circuit loss of absorbent caused by the reliance on natural diffusion of waste gas in existing technologies. While improving the efficiency of waste gas purification, it also significantly improves the utilization rate of absorbent.

[0032] Combination Figure 2 , Figure 6 , Figure 7 and Figure 8 As shown, this equipment also includes a condensation structure located in the upper layer inside the treatment chamber 101, used to dehumidify the pre-treated waste gas and prevent it from carrying water vapor and any remaining water-soluble harmful substances. This condensation structure includes: a condenser 302, rotatably mounted inside the treatment chamber 101, shaped like a funnel, with condensation walls spaced apart on its walls for condensation; the condenser 302 has two layers, with the condensation walls on the two layers staggered to increase the contact area when the waste gas passes through and to create airflow disturbance; a circulation channel is embedded inside the condenser 302; a shaft 301, fixedly mounted between the condenser 302 and the rotating frame 202, used to synchronously transmit the rotation drive of the rotating frame 202 to the condenser 302; and a chiller 303, fixedly mounted on the outer wall of the treatment chamber 101. The chiller 303 provides a low-temperature condensing medium; the turntable 304 is rotatably mounted on the top of the condenser rack 302; the pipeline 305 is fixedly installed between the turntable 304 and the chiller 303, and the chiller 303 is connected to the internal circulation channel of the condenser rack 302 through the pipeline 305 and the turntable 304 to form a closed coolant circulation loop; two scraper racks 306 are fixedly installed on the inner wall of the processing chamber 101, corresponding to the lower part of the two layers of condenser racks 302 respectively, and the upper edge of each scraper rack 306 is in contact with the lower surface of the condenser wall of the corresponding condenser rack 302, and the overall structure of the scraper rack 306 is inclined downward towards the center of the condenser rack 302; the guide block 307 is fixedly installed at the lowest position of the scraper rack 306, and its structure is inclined downward away from the center of the condenser rack 302.

[0033] After being treated by the lower processing structure, the exhaust gas flows upward under the impetus of the subsequent airflow and passes through the condensation structure. The chiller 303 pumps a low-temperature condenser into the circulation channel of the condenser rack 302 through pipeline 305 and rotary table 304, keeping the condenser wall at a low temperature. When the exhaust gas comes into contact with the low-temperature condenser wall, it is cooled down, and the water vapor contained in it condenses into droplets and adheres to the condenser wall of the condenser rack 302, thereby achieving gas-liquid separation and further removing residual harmful substances that may be dissolved in the water vapor. When the rotating rack 202 rotates, it is driven to rotate synchronously by the shaft column 301. This design allows the exhaust gas to have more uniform and sufficient contact with the condenser rack 302, thereby improving the comprehensiveness and efficiency of the condensation treatment.

[0034] As the condenser rack 302 rotates, the water droplets condensed on its wall move relative to the fixed scraper rack 306 and are effectively scraped off. The scraped droplets then collect along the inclined surface of the scraper rack 306 to its lowest point and then transfer to the guide block 307. The inclined design of the guide block 307 guides the liquid away from the shaft column 301, eventually causing it to drip to the bottom of the treatment chamber 101 and be discharged uniformly through the drain pipe 106. This design is used to prevent droplets from flowing down the shaft column 301 and causing residue in the equipment.

[0035] This equipment combines active rotary cooling and mechanical scraping in its condensation structure to achieve efficient and continuous removal of water vapor and residual water-soluble substances from exhaust gas. This effectively prevents excessive emissions caused by water vapor entrainment and liquid accumulation inside the equipment, thereby improving the exhaust gas treatment process.

[0036] Combination Figure 2 As shown, this equipment also includes: a blower 105, which is fixedly installed at the exhaust port 104 to generate a stable negative pressure at the outlet of the treatment chamber 101. The negative pressure can actively guide and promote the directional and smooth flow of the waste gas from bottom to top throughout the entire treatment chamber 101, thereby enhancing the contact driving force between the waste gas flow and the absorbent and condenser rack 302, and improving the overall treatment efficiency; and a filter cotton 107, which is fixedly installed at the inner top of the treatment chamber 101 and located at the final position before the waste gas flows out. As the last guarantee, it performs end adsorption filtration on the treated waste gas that is about to be discharged, capturing trace amounts of aerosols, droplets, and fine solid byproducts generated by the reaction with the absorbent that may be carried in the gas, further improving the comprehensiveness of waste gas purification and the cleanliness of the emitted gas.

[0037] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A waste gas treatment device for styrene-butadiene latex production, comprising: The equipment comprises a processing chamber (101), a support leg (102), an air inlet pipe (103), an exhaust port (104), and an exhaust pipe (106); characterized in that: the equipment further comprises: a pipe column (201), which is fixedly connected inside the processing chamber (101) and is fixed and connected to the air inlet pipe (103); a rotating frame (202), which is rotatably connected to the pipe column (201) and the two are internally connected; a diffuser pipe (203), which is fixedly connected to the lower part of the rotating frame (202) with at least two sets of diffuser pipes (203), each set of diffuser pipes (203) being equidistantly arranged around the rotation axis of the rotating frame (202), each set containing at least two diffuser pipes (203), and equidistantly arranged on the same straight line, with the ends of each diffuser pipe (203) being obliquely upward; a gear ring (204), which is fixedly connected to the air inlet pipe (103) and is connected to the air inlet pipe (106). 02) A gear ring (204) is fixedly connected to the upper part; a motor (205) is fixedly connected inside the treatment chamber (101); a gear (206) is fixedly connected to the output shaft of the motor (205), and the gear (206) meshes with the gear ring (204); a pipe ring (207) is fixedly connected inside the treatment chamber (101); a spray nozzle (208) is fixedly connected to the pipe ring (207), and is evenly distributed along the circumference of the pipe ring (207). All spray nozzles (208) are connected to the pipe ring (207), and their spray direction is set obliquely downward; a connecting pipe head (209) is fixedly connected to the outer wall of the treatment chamber (101) for connecting to the external pump body, and is connected to the pipe ring (207).

2. The waste gas treatment equipment for styrene-butadiene latex production as described in claim 1, characterized in that: The upward-sloping section of the vent pipe (203) is provided with a leak hole (2031). The side of the leak hole (2031) facing outward is the first side (2032), and the side facing inward is the second side (2033). The horizontal height of the first side (2032) is lower than that of the second side (2033).

3. The waste gas treatment equipment for styrene-butadiene latex production as described in claim 2, characterized in that: The equipment further includes: a condenser rack (302), which is rotatably connected to the processing chamber (101) and can be rotated under drive. It is funnel-shaped and has condenser walls for condensation spaced apart on its walls. The condenser rack (302) has at least two layers, and the condenser walls on adjacent layers of the condenser rack (302) are staggered. A circulating flow channel is embedded inside the condenser rack (302); a refrigerator (303), which is fixedly connected to the outer wall of the processing chamber (101) to provide a low-temperature condensing medium; a turntable (304), which is rotatably connected to the top of the condenser rack (302); and pipelines (305). A pipeline (305) is fixedly connected between the turntable (304) and the refrigerator (303). The refrigerator (303) is connected to the circulation channel inside the condenser rack (302) through the pipeline (305) and the turntable (304) to form a closed coolant circulation loop. A scraper rack (306) is fixedly connected to the inner wall of the processing chamber (101). A set of scraper racks (306) is set below each layer of condenser racks (302). The upper edge of each set of scraper racks (306) is in contact with the lower surface of the condenser wall of the corresponding condenser rack (302), and the overall structure of the scraper rack (306) is inclined downward towards the center of the condenser rack (302).

4. The waste gas treatment equipment for styrene-butadiene latex production as described in claim 3, characterized in that: The device further includes: a shaft column (301), and a shaft column (301) is fixedly connected between the condenser frame (302) and the rotating frame (202) for synchronously transmitting the rotation drive of the rotating frame (202) to the condenser frame (302).

5. The waste gas treatment equipment for styrene-butadiene latex production as described in claim 4, characterized in that: The device also includes: a flow guide block (307), which is fixedly connected to the lowest position of the scraper (306), and its structure is inclined downwards in a direction away from the center of the condenser (302).

6. The waste gas treatment equipment for styrene-butadiene latex production as described in claim 5, characterized in that: The equipment also includes a blower (105), which is fixedly connected to the exhaust port (104) to generate a stable negative pressure at the outlet of the processing chamber (101).

7. The waste gas treatment equipment for styrene-butadiene latex production as described in claim 6, characterized in that: The device also includes: filter cotton (107), the filter cotton (107) is fixedly connected to the top of the treatment chamber (101), located at the final position before the exhaust gas flows out, for end adsorption filtration of the treated exhaust gas.

8. The waste gas treatment equipment for styrene-butadiene latex production as described in claim 7, characterized in that: The joint between the tube column (201) and the rotating frame (202) is sealed.

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