Dust-containing tail gas treatment system for reaction kettle

Abstract

The utility model relates to the technical field of dust-containing tail gas treatment, in particular to a reaction kettle dust-containing tail gas treatment system which is characterized by comprising a condensation separation device, a liquid separation device and an RTO waste gas treatment device which are sequentially connected through a pipeline, the condensation separation device comprises a reaction kettle, the bottom of the reaction kettle is provided with a discharge port, the discharge port is connected with a pneumatic valve, the pneumatic valve is connected with an exhaust port through a pipeline, and a steam condensate water storage tank is arranged between the exhaust port and the discharge port; the condensation separation device further comprises a wet cyclone dust removal device. The reaction kettle dust-containing tail gas treatment system solves the problems of low dust-containing tail gas treatment efficiency and high fault rate of full-load dust removal of a dust removal system, can efficiently treat the dust-containing tail gas of the reaction kettle in an energy-saving manner, improves the tail gas separation and recovery efficiency, and is simple in structure, smooth in operation, low in cost and suitable for popularization and application. The device is suitable for being popularized and used in factory treatment of dust-containing tail gas of the reaction kettle.

Description

Technical Field

[0001] This utility model relates to the field of dust-containing exhaust gas treatment technology, specifically to a dust-containing exhaust gas treatment system for a reaction vessel. Background Technology

[0002] With the rapid development of industry, the exhaust gas from reaction vessels often contains a large amount of unreacted substances or reaction products. Some of these substances will condense into liquid, some into dust, and some into both. The exhaust gas can accumulate liquid or form dust aggregates through condensation. Many factories discharge the waste gas and dust after production directly into the air without treatment, which not only pollutes the environment and affects the ecological balance, but also causes toxic waste gas and dust to float in the air. When people inhale these waste gases and dust, they can easily lead to illness and threaten people's survival.

[0003] Currently, the common method for treating exhaust gas involves installing a condenser system at the reactor outlet. This system cools the exhaust gas, causing some water vapor and other volatile organic compounds to condense into liquid, thus achieving initial purification. After pretreatment, the gas is typically sent to one or more high-efficiency dust removal devices. Existing chemical exhaust gas dust removal systems include cyclone dust collectors, bag filters, spray dust collectors, and electrostatic precipitators. Cyclone dust collectors and spray dust collectors are the most widely used. Existing spray dust collection systems typically include a dust collection tower, high-pressure water spray pipes, and airflow baffles. They primarily use high-pressure water to directly spray the gas. While this method can reduce pollutant emissions to some extent, it also has significant limitations and shortcomings. It requires a large amount of water, and dust removal is incomplete, easily leading to the accumulation of large amounts of difficult-to-remove impurities inside the condenser, thus reducing equipment performance and even causing malfunctions. Because the condenser system fails to effectively separate large amounts of moisture and fine particulate matter, subsequent dust collection facilities may frequently fail due to overload, increasing maintenance costs and making it difficult to meet stringent emission standards. This results in low exhaust gas treatment efficiency and high operating costs. Utility Model Content

[0004] In order to improve the efficiency of dust-laden exhaust gas treatment or to make it meet emission standards, and to prevent the failure rate of dust removal system under full load, this application provides a reactor dust-laden exhaust gas treatment system, which can treat reactor dust-laden exhaust gas in an energy-saving and efficient manner, improve the exhaust gas separation and recovery efficiency, and has a simple structure, smooth operation and low cost, making it suitable for widespread use in the treatment of reactor dust-laden exhaust gas in factories.

[0005] This application provides a dust-laden exhaust gas treatment system for a reactor, which adopts the following technical solution:

[0006] A system for treating dusty exhaust gas from a reactor includes a condensation separation device, a liquid separation device, and an RTO waste gas treatment device connected in sequence via pipelines. The condensation separation device includes a reactor with a discharge port at the bottom. The discharge port is connected to a pneumatic valve, which is connected to an exhaust port via a pipeline. A steam condensate storage tank is provided between the exhaust port and the discharge port. The condensation separation device also includes a wet cyclone dust collector.

[0007] By employing the above technical solution, the condensation separation device, liquid separation device, and RTO waste gas treatment device are organically and appropriately coordinated to condense and separate moisture and dust in the exhaust gas generated by the reactor. Moisture and dust are removed from the gas stream, ensuring the normal operation of the subsequent exhaust gas treatment system and improving overall purification efficiency. A steam condensate storage tank is installed between the reactor exhaust port and discharge port. A pneumatic valve allows gas to pass through a pipeline around half of the reactor, entering the next process from the exhaust port. Low-boiling-point gases in the exhaust gas condense and flow back to the steam condensate storage tank under gravity for collection. Uncondensed exhaust gas enters a wet cyclone dust collector through the exhaust port. High-speed rotation generates centrifugal force, causing heavier dust and most water droplets to be thrown against the cylinder wall and form a water film, further purifying the exhaust gas. The purified gas, ensuring it is almost free of moisture and dust, is finally input into the RTO waste gas treatment device for incineration. This prevents moisture and dust in the exhaust gas from clogging the condenser, ensuring the normal operation of the exhaust gas treatment system and improving overall purification efficiency.

[0008] In one specific implementation scheme, the wet cyclone dust collector includes a fan, one end of which is connected to the exhaust port and the other end is connected to a separation chamber. A spray assembly is provided on the separation chamber, and a dust collection assembly is provided at the bottom of the separation chamber.

[0009] By adopting the above technical solution, the exhaust gas is forced into the separation chamber by a fan, and the spray assembly sprays liquid into the separation chamber. During the process of the exhaust gas forming a cyclone separation airflow, the dust in the airflow reacts with the liquid. The dust in the exhaust gas and the solid particles produced by the reaction move towards the inner wall of the separation chamber under centrifugal force. The high-speed rotation generates centrifugal force, causing heavier dust and most water droplets to be thrown against the cylinder wall and form a water film. Under their own gravity, the water flows down the cylinder wall and falls into the dust collection assembly, while the clean airflow flows out from the outlet of the separation chamber. This exhaust gas treatment device, by incorporating a spray assembly and a fan, can effectively neutralize harmful gases in the exhaust gas, reducing the probability of malfunction and blockage of the wet cyclone dust collector during the process reaction, and extending the service life of the wet cyclone dust collector.

[0010] In one specific implementation, the dust collection assembly includes a dust collection trough and a dust collection cover.

[0011] By adopting the above technical solution and setting up a dust collection tank and dust collection cover, most of the liquefied droplets can be collected, thereby purifying and removing impurities and facilitating recycling.

[0012] The dust collection trough is also equipped with a dust removal motor.

[0013] In one specific implementation, the spray assembly includes a spray pipe with a plurality of spray heads, and the spray pipe is connected to a circulating water tank.

[0014] By adopting the above technical solution, the spray head installed on the spray pipe causes the heavier dust and most water droplets to be thrown towards the cylinder wall and come into contact with it to form a water film, which can then flow along the cylinder wall into the dust collection tank for efficient collection.

[0015] In one specific implementation, the liquid separating device includes a liquid separating tank, which has several trays inside, a feed valve at the bottom, and a vent pipe connected to the top of the liquid separating tank.

[0016] By adopting the above technical solution, the uncondensed tail gas after passing through the wet cyclone dust collector can be further captured by several trays set in the separator, resulting in the distillation of clean gas. Moisture and dust are condensed and collected layer by layer downwards, resulting in high separation efficiency.

[0017] In one specific implementation, the vent manifold is connected to an RTO exhaust gas treatment device for regenerative combustion.

[0018] By adopting the above technical solution, the clean gas obtained from the separator is introduced into the RTO waste gas treatment device through the venting main pipe for incineration. The tail gas treatment efficiency is high, avoiding clogging and damage to components, and the purification effect is good, which has a positive effect on the environment and ecology.

[0019] In one specific implementation scheme, the circulating water tank is connected to a circulating water supply pump and a circulating water return pump. The circulating water supply pump is connected in sequence to the steam condensate storage tank, the circulating water return pump, and the circulating water tank via water pipes.

[0020] By adopting the above technical solution, the liquid discharged from the outlet is condensed, allowing some of the low-boiling-point exhaust gas components to be preferentially condensed and recovered. This avoids frequent damage to the exhaust gas treatment components due to overload, which would increase maintenance costs and make it difficult to meet emission standards.

[0021] In one specific implementation, the exhaust port is also equipped with a manual butterfly valve.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. By organically and appropriately coordinating the condensation separation device, liquid separation device, and RTO waste gas treatment device, moisture and dust in the exhaust gas generated by the reactor are condensed and separated, and removed from the gas flow. This ensures the normal operation of the subsequent exhaust gas treatment system and improves the overall purification efficiency. A steam condensate storage tank is installed between the reactor exhaust port and the discharge port. A pneumatic valve allows the gas to pass through a pipeline around half of the reactor and enter the next process from the exhaust port. Low-boiling-point gases in the exhaust gas condense and flow back to the steam condensate storage tank under gravity for collection. The uncondensed exhaust gas enters a wet cyclone dust collector through the exhaust port. High-speed rotation generates centrifugal force, causing heavier dust and most water droplets to be thrown against the cylinder wall and form a water film, further purifying the exhaust gas. The purified gas, ensuring it is almost free of moisture and dust, is finally input into the RTO waste gas treatment device for incineration. This prevents moisture and dust in the exhaust gas from clogging the condenser, ensuring the normal operation of the exhaust gas treatment system and improving the overall purification efficiency.

[0024] 2. The exhaust gas is forced into the separation chamber by a fan. A spray assembly sprays liquid into the chamber, creating a cyclone separation process that reacts with the liquid to separate dust particles. The dust and solid particles generated by the reaction move towards the inner wall of the separation chamber under centrifugal force. High-speed rotation generates centrifugal force, causing heavier dust particles and most water droplets to be thrown against the wall and form a water film. This film then flows down the wall under gravity and into the dust collection assembly. The clean airflow exits from the separation chamber outlet. This exhaust gas treatment device, with its spray assembly and fan, effectively neutralizes harmful gases in the exhaust gas, reducing the probability of malfunctions and blockages in the wet cyclone dust collector during the process, and extending its service life.

[0025] 3. The uncondensed tail gas after passing through the wet cyclone dust collector can be further captured by several trays set in the separator, which can capture small droplets and particles rising with the airflow, so that clean gas is distilled out, and moisture and dust are condensed and collected layer by layer downwards, resulting in high separation efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a dust-laden exhaust gas treatment system for a reactor according to an embodiment of this application.

[0027] Figure 2 yes Figure 1 Enlarged view of part A in the middle.

[0028] Explanation of reference numerals in the attached diagram: 1. Reactor; 2. Discharge port; 3. Pneumatic valve; 11. Exhaust port; 12. Steam condensate storage tank; 121. Fan; 122. Separation chamber; 13. Spray pipe; 131. Spray head; 132. Circulating water tank; 14. Dust collection tank; 141. Dust collection cover; 142. Dust removal motor; 15. Separating tank; 16. Feed valve; 21. Vent main; 22. RTO exhaust gas treatment device; 221. Manual butterfly valve; 23. Material temperature measuring port; 24. Safety valve. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0030] This application discloses a system for treating dusty exhaust gas from a reactor.

[0031] Reference Figure 1 and Figure 2 A dust-laden gas treatment system for a reactor 1 includes a condensation separation device, a liquid separation device, and an RTO waste gas treatment device 22 connected sequentially via pipelines. The condensation separation device includes a reactor 1 with a discharge port 2 at its bottom. The discharge port 2 is connected to a pneumatic valve 3, which is connected to an exhaust port 11 via a pipeline. The discharge port 2 is also connected to a material temperature measuring port 23 via a pipeline. The material temperature measuring port 23 is connected to a steam condensate storage tank 12, which is connected to the exhaust port 11. A safety valve is installed between the steam condensate storage tank 12 and the exhaust port 11. The exhaust port 11 is also equipped with a manual butterfly valve 221 to prevent condensate from entering the reactor. The exhaust vent 11 flows out and clogs subsequent separation elements, causing losses. The exhaust vent 11 is connected to a wet cyclone dust collector, which includes a fan 121. One end of the fan 121 is connected to the exhaust vent 11, and the other end is connected to a separation chamber 122. A spray assembly, including a spray pipe 13, is installed on the separation chamber 122. The spray pipe 13 has several spray heads 131 and is connected to a circulating water tank 132. The circulating water tank 132 is connected to a circulating water pump and a circulating water return pump. The circulating water pump is connected in sequence to a steam condensate storage tank 12, the circulating water return pump, and the circulating water tank 132 via water pipes. A dust collection assembly, including a dust collection trough 14 and a dust collection cover 141, is installed at the bottom of the separation chamber 122. A dust collection motor 142 is also installed on the dust collection trough 14. The gas after dust removal by the wet cyclone dust collector is connected to the liquid separator through a pipe passing through the dust collection cover 141. The liquid separator includes a liquid separator tank 15, which has several trays inside and a feed valve 16 at the bottom. The top of the liquid separator tank 15 is connected to a vent pipe 21, which is connected to an RTO waste gas treatment device 22. The clean gas is then subjected to regenerative thermal combustion treatment.

[0032] The implementation principle of this embodiment is as follows: In the steam condensate storage tank 12 between the exhaust port 11 and the discharge port 2 of the reactor 1, the low-boiling-point gases in the exhaust gas are condensed by circulating water and collected by gravity back to the steam condensate storage tank 12 through the pneumatic valve 3. The uncondensed exhaust gas enters the next process through the exhaust port 11, entering the wet cyclone dust collector. Through high-speed rotation, centrifugal force is generated, causing heavier dust and most water droplets to be thrown against the cylinder wall and form a water film, further purifying the exhaust gas. The purified clean gas, ensuring that it is almost free of moisture and dust, is finally input into the RTO waste gas treatment device 22 for incineration. This avoids moisture and dust in the exhaust gas from clogging the condenser, ensuring the normal operation of the exhaust gas treatment system and improving the overall purification efficiency.

[0033] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A reactor dust-laden off-gas treatment system, characterized by, The application relates to a waste gas treatment device, which comprises a condensing separation device, a liquid separation device and an RTO waste gas treatment device (22) connected in sequence through pipelines; the condensing separation device comprises a reaction kettle (1), the bottom of the reaction kettle (1) is provided with a discharge port (2), the discharge port (2) is connected with a pneumatic valve (3), the pneumatic valve (3) is connected with an exhaust port (11) through a pipeline, a steam condensate water storage tank (12) is arranged between the exhaust port (11) and the discharge port (2); and the condensing separation device further comprises a wet type cyclone dust removal device.

2. A system for treating a dust-laden off-gas from a reactor vessel as claimed in claim 1, wherein, The wet type cyclone dust removal device comprises a fan (121), one end of the fan (121) is connected to the exhaust port (11), the other end is connected with a separation cavity (122), a spraying assembly is arranged on the separation cavity (122), and a dust collecting assembly is arranged at the bottom of the separation cavity (122).

3. A system for treating a dust-laden off-gas from a reactor vessel as claimed in claim 2, wherein, The dust collecting assembly comprises a dust collecting groove (14) and a dust collecting cover (141).

4. A system for treating a dust-laden off-gas from a reactor vessel as claimed in claim 2, wherein, The spraying assembly comprises a spraying pipe (13), a plurality of spraying heads (131) are arranged on the spraying pipe (13), and the spraying pipe (13) is connected with a circulating water tank (132).

5. A system for treating a dust-laden off-gas from a reactor vessel as claimed in claim 1, wherein, The liquid separation device comprises a liquid separation tank (15), a plurality of tower plates are arranged in the liquid separation tank (15), a feeding valve (16) is arranged at the bottom, and the top of the liquid separation tank (15) is connected with a venting main pipe (21).

6. A system for treating a dust-laden off-gas from a reactor vessel as claimed in claim 5, wherein, The venting main pipe (21) is connected with the RTO waste gas treatment device (22) to perform heat accumulation combustion.

7. A system for treating a dust-laden off-gas from a reactor vessel as defined in claim 4, characterized in that The circulating water tank (132) is communicated with a circulating water feeding pump and a circulating water returning pump, the circulating water feeding pump is connected to the steam condensate water storage tank (12), the circulating water returning pump and the circulating water tank (132) in sequence through water pipes.

8. A system for treating a dust-laden off-gas from a reactor vessel as defined in claim 1, characterized in that The exhaust port (11) is further provided with a manual butterfly valve (221).

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