Activated carbon carbonization furnace tail gas treatment system

Abstract

The utility model relates to activated carbon production equipment technology, has shown a kind of activated carbon carbonization furnace tail gas treatment system, including activated carbon carbonization furnace, tail gas collection pipeline, pretreatment unit, catalytic oxidation unit, adsorption tower and condenser, tail gas collection pipeline is connected with the tail gas export of activated carbon carbonization furnace;Pretreatment unit includes cyclone separator and water spray tower, cyclone separator air inlet is connected with tail gas collection pipeline, cyclone separator gas outlet is connected with water spray tower air inlet, and water spray tower gas outlet is connected with catalytic oxidation unit;Catalytic oxidation unit includes catalytic oxidation chamber and heating device, and catalytic oxidation chamber air inlet is connected with water spray tower gas outlet, and heating device is arranged in catalytic oxidation chamber, and catalytic oxidation chamber gas outlet is connected with adsorption tower;Adsorption tower gas outlet is connected with condenser, and condenser air inlet is connected with adsorption tower gas outlet, and condenser gas outlet is connected with discharge pipeline, and condenser condensate water outlet is connected with condensate water collection groove by pipeline.

Description

Technical Field

[0001] This utility model relates to the technical field of activated carbon production equipment, and more specifically, to an activated carbon carbonization furnace tail gas treatment system. Background Technology

[0002] During activated carbon production, the carbonization furnace generates a large amount of exhaust gas, which contains various harmful gases and particulate matter, such as carbon dioxide, carbon monoxide, sulfur dioxide, nitrogen oxides, and carbon black. Traditional exhaust gas treatment methods have many problems, such as low treatment efficiency, complex equipment, high operating costs, and difficulty in effectively removing multiple pollutants. Therefore, there is an urgent need for a highly efficient, economical, and structurally simple exhaust gas treatment device for activated carbon carbonization furnaces. Utility Model Content

[0003] This application provides an activated carbon carbonization furnace tail gas treatment system, which solves many problems of traditional tail gas treatment methods, such as low treatment efficiency, complex equipment, high operating costs, and difficulty in effectively removing multiple pollutants.

[0004] This application provides an activated carbon carbonization furnace tail gas treatment system, including an activated carbon carbonization furnace, a tail gas collection pipeline, a pretreatment unit, a catalytic oxidation unit, an adsorption tower and a condenser, wherein the tail gas collection pipeline is connected to the tail gas outlet of the activated carbon carbonization furnace. The pretreatment unit includes a cyclone separator and a water spray tower. The air inlet of the cyclone separator is connected to the exhaust gas collection pipe, the air outlet of the cyclone separator is connected to the air inlet of the water spray tower, and the air outlet of the water spray tower is connected to the catalytic oxidation unit. The catalytic oxidation unit includes a catalytic oxidation chamber and a heating device. The air inlet of the catalytic oxidation chamber is connected to the air outlet of the water spray tower. The heating device is installed in the catalytic oxidation chamber. The air outlet of the catalytic oxidation chamber is connected to the adsorption tower. The outlet of the adsorption tower is connected to the condenser, the inlet of the condenser is connected to the outlet of the adsorption tower, the outlet of the condenser is connected to a discharge pipe, and the condensate outlet of the condenser is connected to a condensate collection tank through a pipe.

[0005] Preferably, the water spray tower is equipped with multiple spray nozzles.

[0006] Preferably, the bottom of the water spray tower is connected to the wastewater treatment system via a pipe.

[0007] Preferably, the catalytic oxidation chamber is equipped with a temperature sensor.

[0008] Preferably, the heating device is an electric heating wire.

[0009] Preferably, the adsorption layer inside the adsorption tower is filled with activated carbon particles.

[0010] Preferably, the condenser is a tubular condenser.

[0011] Preferably, the discharge pipe is equipped with a gas flow meter and a gas analyzer.

[0012] Preferably, the condensate collection tank is equipped with a liquid level sensor, and the condensate collection tank is connected to a drain pump via a pipe.

[0013] As can be seen from the above technical solution, this application provides an activated carbon carbonization furnace tail gas treatment system. In use, the tail gas from the activated carbon carbonization furnace tail gas outlet enters the cyclone separator of the pretreatment unit through the tail gas collection pipe. The cyclone separator uses centrifugal force to separate large particulate impurities from the tail gas. The separated tail gas then enters a water spray tower, where nozzles spray water mist to fully contact the tail gas, removing some soluble gases and fine particulate matter while simultaneously reducing the tail gas temperature. The pretreated tail gas then enters the catalytic oxidation chamber of the catalytic oxidation unit. A heating device raises the temperature inside the catalytic oxidation chamber to 200℃-400℃. Under the action of the catalyst, the tail gas... Harmful gases such as carbon monoxide, sulfur dioxide, and nitrogen oxides are oxidized into harmless substances such as carbon dioxide and water. The catalytically oxidized exhaust gas enters the adsorption tower, where activated carbon particles deeply adsorb organic matter and odors, further purifying the exhaust gas. The adsorbed exhaust gas then enters the condenser, where circulating cooling water condenses the water vapor in the exhaust gas into liquid water. The condensate flows into the condensate collection tank, reducing the temperature of the exhaust gas and meeting environmental emission requirements. Finally, the treated exhaust gas is discharged through the emission pipe, where gas flow meters and gas analyzers monitor the emission flow rate and pollutant concentration in real time to ensure that the exhaust gas meets emission standards.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model, through the cyclone separator and water spray tower of the pretreatment unit, can effectively remove large particulate impurities and some soluble gases from the exhaust gas, thereby reducing the load on subsequent treatment units.

[0015] 2. The catalytic oxidation unit of this utility model can oxidize harmful gases such as carbon monoxide, sulfur dioxide, and nitrogen oxides in exhaust gas into harmless substances such as carbon dioxide and water at a lower temperature, thereby improving exhaust gas treatment efficiency and reducing energy consumption.

[0016] 3. The activated carbon particles filled in the adsorption tower of this invention can deeply adsorb organic matter and odors in the exhaust gas, further purify the exhaust gas, and improve the quality of exhaust gas treatment.

[0017] 4. The condenser of this utility model can condense water vapor in the exhaust gas into liquid water, and the condensate collection tank recovers the condensate, reducing water waste and lowering the exhaust gas emission temperature to meet environmental protection emission requirements.

[0018] In summary, an activated carbon carbonization furnace tail gas treatment system, through the cyclone separator and water spray tower in the pretreatment unit, can effectively remove large particulate impurities and some soluble gases from the tail gas, reducing the load on subsequent treatment units. The catalytic oxidation unit can oxidize harmful gases in the tail gas into harmless substances at a lower temperature, improving tail gas treatment efficiency. The condenser can condense water vapor in the tail gas into liquid water, and the condensate collection tank recovers the condensate, reducing water waste. Attached Figure Description

[0019] To more clearly illustrate the technical solution of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0020] Figure 1 This is a schematic diagram of an activated carbon carbonization furnace tail gas treatment system provided by this utility model. Figure 2 A schematic diagram of the structure of a catalytic oxidation unit in an activated carbon carbonization furnace tail gas treatment system provided by this utility model; Figure 3 This is a schematic diagram of the structure of the adsorption tower in the tail gas treatment system of an activated carbon carbonization furnace provided by this utility model.

[0021] The reference numerals in the detailed embodiments are as follows: 1. Activated carbon carbonization furnace; 2. Tail gas collection pipeline; 3. Pretreatment unit; 31. Cyclone separator; 32. Water spray tower; 321. Spray nozzle; 4. Catalytic oxidation unit; 41. Catalytic oxidation chamber; 42. Heating device; 5. Adsorption tower; 51. Activated carbon granules; 6. Condenser; 7. Discharge pipeline; 8. Condensate collection tank; 9. Gas flow meter; 10. Gas analyzer; 11. Liquid level sensor; 12. Drain pump; 13. Wastewater treatment system; 14. Temperature sensor. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0023] See Figure 1-3This application discloses an activated carbon carbonization furnace tail gas treatment system. To address the numerous problems associated with traditional tail gas treatment methods, such as low treatment efficiency, complex equipment, high operating costs, and difficulty in effectively removing various pollutants, this application proposes an activated carbon carbonization furnace tail gas treatment system. Through a cyclone separator and water spray tower in the pretreatment unit, large particulate impurities and some soluble gases in the tail gas can be effectively removed, reducing the load on subsequent treatment units. The catalytic oxidation unit can oxidize harmful gases in the tail gas into harmless substances at a lower temperature, improving tail gas treatment efficiency. The condenser can condense water vapor in the tail gas into liquid water, and the condensate collection tank recovers the condensate, reducing water waste.

[0024] Specifically, an activated carbon carbonization furnace tail gas treatment system includes an activated carbon carbonization furnace 1, a tail gas collection pipe 2, a pretreatment unit 3, a catalytic oxidation unit 4, an adsorption tower 5, and a condenser 6. The tail gas collection pipe 2 is connected to the tail gas outlet of the activated carbon carbonization furnace 1, and the tail gas enters the pretreatment unit 3 from the tail gas outlet of the activated carbon carbonization furnace 1 through the tail gas collection pipe 2. The pretreatment unit 3 includes a cyclone separator 31 and a water spray tower 32. The inlet of the cyclone separator 31 is connected to the tail gas collection pipe 2. The separation efficiency of the cyclone separator 31 is ≥90%. A solid particle collection tank is connected to the bottom of the cyclone separator 31 through a pipe for collecting solid particles at the separation point. The outlet of the cyclone separator 31... The water spray tower 32 is connected to the air inlet and is equipped with multiple nozzles 321 to increase the contact area between the exhaust gas and water and improve the purification effect. The bottom of the water spray tower 32 is connected to the wastewater treatment system 13 through a pipe for the wastewater to be treated and recycled. The air outlet of the water spray tower 32 is connected to the catalytic oxidation unit 4. The exhaust gas enters the cyclone separator 31 of the pretreatment unit 3. The cyclone separator 31 uses centrifugal force to separate large particulate impurities in the exhaust gas. The separated exhaust gas enters the water spray tower 32. The nozzles 321 in the water spray tower 32 spray water mist to fully contact the exhaust gas, remove some soluble gases and fine particulate matter in the exhaust gas, and reduce the temperature of the exhaust gas at the same time. The catalytic oxidation unit 4 includes a catalytic oxidation chamber 41 and a heating device 42. The catalyst in the catalytic oxidation chamber 41 is a honeycomb ceramic catalyst with a porosity of 40%-60%. The heating device 42 is an electric heating wire with adjustable power to control the temperature inside the catalytic oxidation chamber 41 between 200℃ and 400℃. The air inlet of the catalytic oxidation chamber 41 is connected to the air outlet of the water spray tower 32. The heating device 42 is installed inside the catalytic oxidation chamber 41, and a temperature sensor 14 is installed on the catalytic oxidation chamber 41. The outlet of the oxidation chamber 41 is connected to the adsorption tower 5. The pretreated tail gas enters the catalytic oxidation chamber 41 of the catalytic oxidation unit 4. The heating device 42 raises the temperature in the catalytic oxidation chamber 41 to 200℃-400℃. Under the action of the catalyst, the harmful gases such as carbon monoxide, sulfur dioxide, and nitrogen oxides in the tail gas are oxidized into harmless substances such as carbon dioxide and water. The catalytically oxidized tail gas enters the adsorption tower 5. The activated carbon particles 51 in the adsorption tower 5 deeply adsorb the organic matter and odor in the tail gas, further purifying the tail gas. The outlet of adsorption tower 5 is connected to condenser 6, which is a tubular condenser. The cooling medium of condenser is circulating cooling water at a temperature of 10℃-20℃. The inlet of condenser 6 is connected to the outlet of adsorption tower 5. The adsorption layer in adsorption tower 5 is filled with activated carbon particles 51, with each adsorption layer having a particle size of 1-3mm. The outlet of condenser 6 is connected to a discharge pipe 7, which is equipped with a gas flow meter 9 and a gas analyzer 10. The adsorbed tail gas enters condenser 6, where the circulating cooling water condenses the water vapor in the tail gas into liquid water. The condensate flows into a condensate collection tank 8. After condensation treatment, the temperature of the exhaust gas is reduced, meeting environmental emission requirements. The treated exhaust gas is discharged through the emission pipe 7. The gas flow meter 9 and gas analyzer 10 on the emission pipe 7 monitor the exhaust gas flow rate and pollutant concentration in real time to ensure that the exhaust gas meets emission standards. The condensate outlet of the condenser 6 is connected to the condensate collection tank 8 through a pipe. The condensate collection tank 8 is equipped with a liquid level sensor 11. The condensate collection tank 8 is connected to a drain pump 12 through a pipe. The liquid level sensor 11 is used to detect the liquid level in the condensate collection tank 8. The drain pump 12 is used to discharge the condensate from the condensate collection tank 8 for reuse, reducing water waste and lowering the exhaust gas emission temperature.

[0025] As can be seen from the above technical solution, in the operation of an activated carbon carbonization furnace tail gas treatment system, the tail gas enters the cyclone separator 31 of the pretreatment unit 3 through the tail gas collection pipe 2 from the tail gas outlet of the activated carbon carbonization furnace 1. The cyclone separator 31 uses centrifugal force to separate large particulate impurities in the tail gas. The separated tail gas enters the water spray tower 32, where the nozzles 321 spray water mist, which fully contacts the tail gas to remove some soluble gases and fine particulate matter, while reducing the tail gas temperature. The pretreated tail gas then enters the catalytic oxidation chamber 41 of the catalytic oxidation unit 4. The heating device 42 raises the temperature inside the catalytic oxidation chamber 41 to 200℃-400℃. Under the action of the catalyst, the tail gas... Harmful gases such as carbon monoxide, sulfur dioxide, and nitrogen oxides are oxidized into harmless substances such as carbon dioxide and water. The catalytically oxidized exhaust gas enters adsorption tower 5, where activated carbon particles 51 deeply adsorb organic matter and odors in the exhaust gas, further purifying it. The adsorbed exhaust gas then enters condenser 6, where circulating cooling water condenses water vapor in the exhaust gas into liquid water. The condensate flows into condensate collection tank 8, reducing the temperature of the exhaust gas and meeting environmental emission requirements. Finally, the treated exhaust gas is discharged through exhaust pipe 7, where gas flow meter 9 and gas analyzer 10 monitor the exhaust gas flow rate and pollutant concentration in real time to ensure that the exhaust gas meets emission standards.

[0026] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the applications disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and incorporate common knowledge or customary techniques in the art disclosed herein. The specification and examples are to be considered exemplary only, and the true scope of the invention is indicated by the claims.

[0027] It should be understood that this utility model is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model.

Claims

1. A tail gas treatment system for activated carbon carbonization furnace, characterized in that: It includes an activated carbon carbonization furnace (1), a tail gas collection pipe (2), a pretreatment unit (3), a catalytic oxidation unit (4), an adsorption tower (5), and a condenser (6), wherein the tail gas collection pipe (2) is connected to the tail gas outlet of the activated carbon carbonization furnace (1); The pretreatment unit (3) includes a cyclone separator (31) and a water spray tower (32). The air inlet of the cyclone separator (31) is connected to the tail gas collection pipe (2), the air outlet of the cyclone separator (31) is connected to the air inlet of the water spray tower (32), and the air outlet of the water spray tower (32) is connected to the catalytic oxidation unit (4). The catalytic oxidation unit (4) includes a catalytic oxidation chamber (41) and a heating device (42). The air inlet of the catalytic oxidation chamber (41) is connected to the air outlet of the water spray tower (32). The heating device (42) is installed inside the catalytic oxidation chamber (41). The air outlet of the catalytic oxidation chamber (41) is connected to the adsorption tower (5). The outlet of the adsorption tower (5) is connected to the condenser (6), the inlet of the condenser (6) is connected to the outlet of the adsorption tower (5), the outlet of the condenser (6) is connected to the discharge pipe (7), and the condensate outlet of the condenser (6) is connected to the condensate collection tank (8) through a pipe.

2. The activated carbon carbonization furnace tail gas treatment system according to claim 1, characterized in that: The water spray tower (32) is equipped with multiple nozzles (321).

3. The activated carbon carbonization furnace tail gas treatment system according to claim 1, characterized in that: The bottom of the water spray tower (32) is connected to the wastewater treatment system (13) via a pipe.

4. The activated carbon carbonization furnace tail gas treatment system according to claim 1, characterized in that: A temperature sensor (14) is provided on the catalytic oxidation chamber (41).

5. The activated carbon carbonization furnace tail gas treatment system according to claim 1, characterized in that: The heating device (42) is an electric heating wire.

6. The activated carbon carbonization furnace tail gas treatment system according to claim 1, characterized in that: The adsorption layer inside the adsorption tower (5) is filled with activated carbon particles (51).

7. The activated carbon carbonization furnace tail gas treatment system according to claim 1, characterized in that: The condenser (6) is a tubular condenser.

8. The activated carbon carbonization furnace tail gas treatment system according to claim 1, characterized in that: The discharge pipe (7) is equipped with a gas flow meter (9) and a gas analyzer (10).

9. The activated carbon carbonization furnace tail gas treatment system according to claim 1, characterized in that: The condensate collection tank (8) is equipped with a liquid level sensor (11), and the condensate collection tank (8) is connected to a drain pump (12) through a pipe.

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