Vulcanization smoke removal system for sealing strip

Abstract

The utility model discloses a sealing strip vulcanization smoke removal system which comprises an air exhaust system connected with a bag-type dust collector, an outlet of the bag-type dust collector is connected to an air inlet of a heat exchanger, an air outlet of the heat exchanger is connected to a heater, and an air outlet of the heater is connected to a catalyst. A temperature sensor is mounted at the air outlet and used for feeding back and controlling the power of the heater; the catalytic converter comprises an inner cavity and a heating jacket, the inner cavity is filled with catalytic filler, an air outlet of the inner cavity is connected with an air inlet of the heating jacket through a communicating pipe, an air outlet of the heating jacket is connected to an air inlet of a heat exchange jacket of the heat exchanger, and an air outlet of the heat exchange jacket is connected to an air inlet in the top end of the condenser. An exhaust port at the bottom of the condenser is connected to the steam-water separation tank, an exhaust pipe at the top of the steam-water separation tank is connected to an air inlet of the absorption tower, and an aeration pump and a check valve are sequentially mounted on the exhaust pipe. The system can effectively remove smoke dust generated in the vulcanizing process of the sealing strip, and is low in energy consumption and long in overall service life.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection equipment technology, and in particular to a sealing strip vulcanization smoke removal system. Background Technology

[0002] Sealing strips are mostly made of rubber. To improve their physical and chemical properties, most require vulcanization. This high-temperature vulcanization process generates a large amount of smoke and dust, primarily consisting of sulfur compounds, particulate matter (carbon black, fine particles from rubber raw materials and additives produced during processing), chlorinated compounds, hydrocarbons, and oxygen-containing organic compounds (alcohols, phenols, aldehydes, ketones, organic acids, etc.). Although the concentration is low, direct emission still damages the environment. Furthermore, the low concentration makes incineration an ineffective method for removal, and burning would consume significant amounts of fuel. Currently, adsorption is commonly used, but the complex composition of the substances involved makes it difficult to achieve optimal results with adsorption alone. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a sealing strip vulcanization smoke removal system that can handle sulfurized gases with relatively complex compositions and has relatively low energy consumption.

[0004] The technical solution of this utility model is as follows:

[0005] A sealing strip vulcanization smoke removal system includes an extraction system connected to a bag filter. The outlet of the bag filter is connected to the inlet of a heat exchanger, the outlet of the heat exchanger is connected to a heater, and the outlet of the heater is connected to a catalyst. A temperature sensor is installed at the outlet for feedback control of the heater's power. The catalyst includes an inner cavity and a heating jacket. The inner cavity is filled with catalytic packing. The outlet of the inner cavity is connected to the inlet of the heating jacket via a connecting pipe. The outlet of the heating jacket is connected to the inlet of the heat exchanger's heat exchange jacket. The outlet of the heat exchange jacket is connected to the inlet at the top of a condenser. The exhaust port at the bottom of the condenser is connected to a steam-water separator. The exhaust pipe at the top of the steam-water separator is connected to the inlet of an absorption tower. An aeration pump and a check valve are installed sequentially on the exhaust pipe.

[0006] Furthermore, the extraction system includes a fume hood installed on the upper side of the vulcanizing equipment, with extraction pumps installed at the top outlets of multiple fume hoods. The outlets of the extraction pumps are connected to the exhaust manifold via branch pipes. A booster pump is installed on the exhaust manifold, which is connected to a bag filter dust collector.

[0007] Furthermore, the condenser uses circulating water for cooling. Its inlet is connected to the bottom of the cooling pool through a water supply pipe, and its outlet is connected to the top of the cooling pool through a circulation pipe. A circulation pump is installed on the circulation pipe.

[0008] Furthermore, the catalytic packing uses ceramic honeycomb as a carrier, with platinum, palladium, barium, and lanthanum dispersed on the surface as co-catalysts.

[0009] Furthermore, the absorption tower includes a tower body, with an exhaust port at the top and an air inlet and drain pipe at the bottom. A porous baffle is installed at the bottom of the tower body above the air inlet and drain pipe. PP fibers are filled above the porous baffle, and an alkaline adsorbent that submerges the PP fibers is filled into the tower body.

[0010] The advantages of this utility model are:

[0011] This invention can effectively remove the smoke and dust generated during the vulcanization process of the sealing strip, utilize the heat generated during the catalytic process of the smoke and dust to maintain the core temperature of the catalyst, and preheat the gas entering the heater. This can significantly reduce the power required by the heater to maintain the subsequent reaction, reduce energy consumption, and pre-filter particulate matter, thereby avoiding scaling or sintering in subsequent pipelines and improving the overall lifespan of the system. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the air extraction system.

[0014] Figure 3 This is a schematic diagram of the gas processing section of this system.

[0015] In the diagram: 1-Exhaust system, 11-Fumigation hood, 12-Exhaust pump, 13-Branch pipe, 14-Exhaust main pipe, 15-Pressure pump, 2-Bag filter, 3-Heat exchanger, 31-Heat exchange jacket, 4-Heater, 41-Temperature sensor, 5-Catalyst, 51-Inner cavity, 52-Catalyst packing, 53-Heating jacket, 54-Connecting pipe, 6-Condenser, 61-Water supply pipe, 62-Circulation pipe, 63-Circulation pump, 7-Cooling pool, 8-Gas-water separator, 81-Exhaust pipe, 82-Aeration pump, 83-Check valve, 9-Absorption tower, 91-Tower body, 92-Porous baffle, 93-Drain pipe, 94-PP fiber, 95-Alkaline adsorbent. Detailed Implementation

[0016] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0017] like Figure 1-3 As shown:

[0018] A sealing strip vulcanization smoke removal system includes an extraction system 1 connected to a bag filter 2. The outlet of the bag filter 2 is connected to the inlet of a heat exchanger 3. The outlet of the heat exchanger 3 is connected to a heater 4. The outlet of the heater 4 is connected to a catalyst 5. A temperature sensor 41 is installed at the outlet for feedback control of the power of the heater 4. The catalyst 5 includes an inner cavity 51 and a heating jacket 53. The inner cavity 51 is filled with catalytic packing 52. The outlet of the inner cavity 51 is connected to the inlet of the heating jacket 53 through a connecting pipe 54. The outlet of the heating jacket 53 is connected to the inlet of the heat exchange jacket 31 of the heat exchanger 3. The outlet of the heat exchange jacket 31 is connected to the inlet at the top of the condenser 6. The exhaust port at the bottom of the condenser 6 is connected to a steam-water separator 8. The exhaust pipe 81 at the top of the steam-water separator 8 is connected to the inlet of an absorption tower 9. An aeration pump 82 and a check valve 83 are installed sequentially on the exhaust pipe 81.

[0019] The exhaust system 1 includes a fume hood 11 installed on the upper side of the vulcanizing equipment. A suction pump 12 is installed at the top outlet of a plurality of fume hoods 11. The outlet of the suction pump 12 is connected to the exhaust manifold 14 via a branch pipe 13. A booster pump 15 is installed on the exhaust manifold 14. The exhaust manifold 14 is connected to the bag filter 2.

[0020] The exhaust system 1 concentrates the fumes and dust generated by the vulcanization equipment on multiple production lines to the bag filter 2, removing carbon particles and fine particles generated during the processing of rubber raw materials and additives, which may contain some metal oxides, inorganic salts and other components.

[0021] After particle removal, the gas passes through heat exchanger 3 (exchanging heat with the high-temperature gas discharged from heater 4), then enters heater 4 for further heating to 400-500 degrees Celsius. It then enters catalyst 5 for an oxidation-reduction reaction. The catalytic packing 52 of the oxidizer uses ceramic honeycomb as a carrier, with platinum, palladium, barium, and lanthanum dispersed on its surface as co-catalysts. This catalytically oxidizes sulfur-containing compounds, chlorine-containing compounds, hydrocarbons, and other oxygen-containing organic matter in the flue gas, reacting with the oxygen mixed in the gas to produce carbon dioxide, water, and acidic oxides (mainly sulfur-containing and chlorine-containing oxides). Most of these reactions release heat, further increasing the temperature inside the catalytic carrier and promoting the reaction. The high-temperature gas produced enters heating jacket 53 to maintain... The gas is kept at the temperature of the inner cavity 51 and then enters the heat exchange jacket 31 of the heat exchanger 3 to preheat the gas entering the heater 4. As the reaction proceeds, the power of the heater 4 can be gradually reduced (the signal from the temperature sensor 41 is fed back to the controller of the heater 4 for feedback control) until the system reaches an equilibrium state (at a certain power, the gas temperature at the outlet of the heater 4 fluctuates within a small range above 400 degrees Celsius, which can be considered as reaching an equilibrium state). Then the gas enters the condenser 6 to condense the water vapor in it. The condenser 6 uses circulating water for cooling. Its inlet is connected to the bottom of the cooling pool 7 through the water supply pipe 61, and its outlet is connected to the top of the cooling pool 7 through the circulation pipe 62. A circulation pump 63 is installed on the circulation pipe 62 to facilitate the circulation of condensate.

[0022] The condensed gas enters the gas-water separator 8, where it is separated from the condensed water. Then, it enters the absorption tower 9 through the exhaust pipe 81. A pressure pump 15 is installed on the exhaust pipe 81 to increase the pressure, and a check valve 83 is installed to prevent backflow.

[0023] The absorption tower 9 includes a tower body 91, with an exhaust port at the top and an air inlet and drain pipe 93 at the bottom. A porous baffle 92 is installed at the bottom of the tower body 91 above the air inlet and drain pipe 93. PP fibers 94 are filled above the porous baffle 92. The tower body 91 is filled with alkaline adsorbent 95 that submerges the PP fibers 94. The PP fibers 94 have good corrosion resistance, which can prevent the alkaline adsorbent 95 from corroding. They can significantly increase the rising distance and time of bubbles in the alkaline adsorbent 95 and promote the dispersion of bubbles, thereby improving the adsorption efficiency.

[0024] Among them, the bag filter 2, heat exchanger 3, heater 4 and condenser 6 are all existing technologies, and their specific principles and internal structures will not be traced back.

[0025] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A sealing strip vulcanization smoke removal system, characterized in that: The system includes an extraction system connected to a bag filter. The outlet of the bag filter is connected to the inlet of a heat exchanger, the outlet of the heat exchanger is connected to a heater, and the outlet of the heater is connected to a catalyst. A temperature sensor is installed at the outlet for feedback control of the heater's power. The catalyst includes an inner cavity and a heating jacket. The inner cavity is filled with catalytic packing. The outlet of the inner cavity is connected to the inlet of the heating jacket via a connecting pipe. The outlet of the heating jacket is connected to the inlet of the heat exchanger's heat exchange jacket. The outlet of the heat exchange jacket is connected to the inlet at the top of the condenser. The exhaust port at the bottom of the condenser is connected to a steam-water separator. The exhaust pipe at the top of the steam-water separator is connected to the inlet of the absorption tower. An aeration pump and a check valve are installed sequentially on the exhaust pipe.

2. The sealing strip vulcanization smoke removal system according to claim 1, characterized in that: The extraction system includes a fume hood installed on the upper side of the vulcanizing equipment. Multiple fume hoods have extraction pumps installed at their top outlets. The outlets of the extraction pumps are connected to the exhaust manifold via branch pipes. A booster pump is installed on the exhaust manifold, which is connected to a bag filter.

3. The sealing strip vulcanization smoke removal system according to claim 1, characterized in that: The condenser uses circulating water for cooling. Its inlet is connected to the bottom of the cooling pool through a water supply pipe, and its outlet is connected to the top of the cooling pool through a circulation pipe. A circulation pump is installed on the circulation pipe.

4. The sealing strip vulcanization smoke removal system according to claim 1, characterized in that: The catalytic packing uses ceramic honeycomb as a carrier, with platinum, palladium, barium, and lanthanum dispersed on its surface as co-catalysts.

5. The sealing strip vulcanization smoke removal system according to claim 1, characterized in that: The absorption tower includes a tower body, with an exhaust port at the top and an air inlet and a drain pipe at the bottom. A porous baffle is installed at the bottom of the tower body above the air inlet and the drain pipe. PP fibers are filled above the porous baffle, and an alkaline adsorbent that submerges the PP fibers is filled into the tower body.

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