Petrochemical waste gas treatment device

Abstract

The invention discloses a petrochemical waste gas treatment device which comprises a pipeline for conveying waste gas, the pipeline comprises a straight pipe section, a throat pipe section and an output section, a tower spring-shaped circulating water pipe is arranged in the straight pipe section, the circulating water pipe is provided with a water inlet and a water outlet which extend outwards, and the inner diameter of the throat pipe section is smaller than that of the straight pipe section and that of the output section. A washing ring pipe is arranged on the outer wall of the throat pipe section, a plurality of nozzles are fixed to the circumference of the washing ring pipe in an array mode and penetrate through the pipe wall to extend inwards, the output section is communicated with the outer wall of the treatment tower, a particle capturing mechanism is arranged in the treatment tower, and the top of the treatment tower is communicated with a cyclone dust collector through a conveying pipeline. An exhaust pipe is arranged at the top of the cyclone dust collector; the petrochemical waste gas treatment device can effectively cool, dedust and desulphurize waste gas during use, prevents dust-containing and sulfur-containing waste gas from being directly discharged to influence the environment, and is suitable for popularization and use.

Description

A petrochemical waste gas treatment device Technical Field

[0001] This invention relates to the field of waste gas treatment technology, and in particular to a petrochemical waste gas treatment device. Background Technology

[0002] Currently, petrochemical waste gas commonly contains two core pollutants: particulate matter and sulfides. The synergistic removal of these two pollutants is a key challenge in chemical waste gas treatment. Particulate matter encompasses a variety of solid particles ranging from nanometer to micrometer scale, including catalyst residues, coke particles, and inorganic dust. These particles are characterized by wide particle size distribution, large specific surface area, and strong adsorption capacity, easily adsorbing other toxic and harmful substances to form complex pollutants, further increasing the difficulty of treatment. Sulfides mainly include sulfur-containing compounds such as hydrogen sulfide, carbon disulfide, thiols, and sulfides. These substances are highly corrosive and toxic, not only corroding treatment equipment and shortening its lifespan, but also forming acid rain after emission, disrupting the acid-base balance of soil and water bodies, and causing fatal harm to crops and aquatic organisms.

[0003] In existing technologies, treatment devices for petrochemical waste often employ single or simple combinations of treatment processes, making it difficult to achieve efficient synergistic removal of particulate matter and sulfides. For the removal of particulate matter, existing technologies often employ gravity settling, cyclone separation, baghouse dust collection, and other methods. For the removal of sulfides, existing technologies mainly employ dry adsorption (such as activated carbon adsorption) or wet washing (such as alkaline washing) processes.

[0004] The existing treatment of particulate matter and sulfides in exhaust gas is not ideal, and the two types of equipment have poor compatibility and cannot operate in the same treatment device, which affects the removal effect of particulate dust and sulfides in exhaust gas. Summary of the Invention

[0005] The purpose of this invention is to solve the above-mentioned problems by providing a petrochemical waste gas treatment device that can effectively cool, remove dust and sulfur from waste gas, and avoid the direct emission of dust- and sulfur-containing waste gas that affects the environment.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: a petrochemical waste gas treatment device, comprising a pipeline for conveying waste gas, the pipeline including a straight pipe section, a throat section, and an output section, wherein a tower-spring shaped circulating water pipe is provided in the straight pipe section, the circulating water pipe having an outwardly extending inlet and outlet, the inner diameter of the throat section being smaller than that of the straight pipe section and the output section, and a washing ring pipe being provided on the outer wall of the throat section, wherein multiple nozzles are fixed in a circumferential array on the washing ring pipe, the nozzles extending inward through the pipe wall, the output section communicating with the outer wall of a treatment tower, wherein a particle capture mechanism is provided inside the treatment tower, and the top of the treatment tower is connected to a cyclone dust collector through a conveying pipe, the top of the cyclone dust collector having an exhaust pipe.

[0007] Preferably, the particle capture mechanism includes a particle capture disk fixed to the inner wall of the processing tower, and a plurality of baffles are arranged sequentially inside the particle capture disk. The baffles are wavy, and a first arc-shaped bending plate and a second arc-shaped bending plate are fixed along their own length direction on the baffles. Both the first arc-shaped bending plate and the second arc-shaped bending plate are arc-shaped and inclined downward.

[0008] Preferably, the first arc-shaped bend plate is fixed at the top arch of the outer wall of the baffle plate, the second arc-shaped bend plate is located above the first arc-shaped bend plate and is arranged in opposite directions to the first arc-shaped bend plate, and the horizontal extension length of the first arc-shaped bend plate and the second arc-shaped bend plate is not less than 1 / 2 of the distance between the two baffle plates.

[0009] Preferably, a guide cone is fixed inside the treatment tower, the constriction section of the guide cone is opposite to the direction of waste gas conveying, the guide cone is fixed to the inner wall of the treatment tower by a bracket, and a gap is left between the guide cone and the treatment tower for waste gas to pass through. A chemical ring pipe is provided above the guide cone, the chemical ring pipe is located directly above the annular gap, and the chemical powder in the chemical ring pipe is sprayed downward into the annular gap.

[0010] Preferably, an inner ring tube is suspended and fixed inside the drug ring tube. The inner ring tube is provided with a first connecting tube and a second connecting tube. A connecting hole is provided at the bottom of the drug ring tube, and an extension tube is provided at the bottom of the inner ring tube. The extension tube extends vertically into the annular gap through the drug ring tube, wherein the connecting hole and the extension tube are arranged alternately.

[0011] Preferably, a workbench is fixed around the processing tower, and two sets of blowing mechanisms for triggering the drug powder are symmetrically arranged on the workbench. The two sets of blowing mechanisms are respectively connected to the first connecting pipe and the second connecting pipe. The blowing mechanism includes a drug tank and a solenoid valve. One side of the drug tank is connected to the first connecting pipe or the second connecting pipe through an air pipe, and the other side is connected to the solenoid valve through an air pipe. One side of the solenoid valve is connected to a gas cylinder through an air pipe, and the end of the gas cylinder is provided with a gas injection main pipe connected to a gas source.

[0012] Preferably, the top of the medicine container is provided with an end cap, the end cap is provided with an exhaust hole around it, the inner wall of the exhaust hole is provided with a filter cloth to prevent the medicine from leaking out, and the bottom of the medicine container is provided with an air blowing pipe, which is connected to the main air injection pipe.

[0013] Preferably, the conveying pipe is tangent to the inner wall of the cyclone dust collector, the bottom of the cyclone dust collector is provided with a dust collection seat, and the exhaust pipe is provided with multiple filter tubes. After dust removal, the exhaust gas enters the filter tubes and is discharged vertically upward.

[0014] Preferably, the filter tube is fixed to the inner wall of the exhaust pipe by a fixing plate, and a vertical sealing cylinder is provided at the center of the multiple filter tubes. The sealing cylinder is provided with an output shaft that can be raised and lowered. The inner top wall of the sealing cylinder is connected to the surface of the output shaft by a tension spring. The bottom end of the output shaft is provided with multiple cleaning rings, each of which corresponds to a filter tube, and the inner wall of the cleaning ring is in contact with the outer wall of the filter tube.

[0015] Preferably, the outer wall of the sealing cylinder is connected to a pressurized air pipe, which is connected to an external air source.

[0016] This invention discloses a petrochemical waste gas treatment device, comprising a pipeline for conveying waste gas. The pipeline includes a straight pipe section, a throat section, and an output section. A tower-spring shaped circulating water pipe is installed within the straight pipe section, with an outwardly extending inlet and outlet. The inner diameter of the throat section is smaller than that of the straight pipe section and the output section, and a washing ring pipe is installed on the outer wall of the throat section. Multiple nozzles are fixed in a circumferential array on the washing ring pipe, extending inward through the pipe wall. The output section is connected to the outer wall of a treatment tower. The treatment tower is equipped with a particle capture mechanism, and the top of the treatment tower is connected to a cyclone dust collector via a conveying pipe. The top of the cyclone dust collector has an exhaust pipe. Compared with existing technologies, this petrochemical waste gas treatment device effectively cools, removes dust and sulfur from the waste gas, preventing the direct emission of dust- and sulfur-containing waste gas and its environmental impact. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the overall structure of a petrochemical waste gas treatment device according to the present invention.

[0018] Figure 2 is a schematic diagram of the overall structure of a petrochemical waste gas treatment device according to the present invention.

[0019] Figure 3 is a schematic diagram of the internal structure of the waste gas conveying pipeline in a petrochemical waste gas treatment device of the present invention.

[0020] Figure 4 is a schematic diagram of the internal structure of the treatment tower in a petrochemical waste gas treatment device of the present invention.

[0021] Figure 5 is a schematic diagram of the internal structure of the treatment tower in a petrochemical waste gas treatment device of the present invention.

[0022] Figure 6 is a cross-sectional schematic diagram of the particle capture disc in a petrochemical waste gas treatment device of the present invention.

[0023] Figure 7 is a schematic diagram of the reagent loop in a petrochemical waste gas treatment device of the present invention.

[0024] Figure 8 is a schematic diagram of the injection of pharmaceutical powder into the treatment tower in a petrochemical waste gas treatment device of the present invention.

[0025] Figure 9 is an enlarged structural schematic diagram of point A in Figure 4 of the petrochemical waste gas treatment device of the present invention.

[0026] Figure 10 is an enlarged structural schematic diagram of point B in Figure 6 of a petrochemical waste gas treatment device according to the present invention.

[0027] Figure 11 is a schematic diagram showing the dimensions in Figure 10 of this invention.

[0028] Figure 12 is a schematic diagram of the internal structure of the exhaust pipe in a petrochemical waste gas treatment device of the present invention.

[0029] Figure 13 is a schematic diagram of the internal structure of the exhaust pipe in a petrochemical waste gas treatment device of the present invention.

[0030] Figure 14 is a schematic diagram of the internal structure of the exhaust pipe in a petrochemical waste gas treatment device of the present invention.

[0031] In the diagram: 1. Straight pipe section; 2. Throat section; 3. Circulating water pipe; 31. Inlet; 32. Outlet; 4. Reserved pipe; 5. Washing ring pipe; 51. Sprayer head; 6. Output section; 7. Treatment tower; 71. Particle capture plate; 711. Baffle plate; 712. First arc-shaped bend plate; 713. Second arc-shaped bend plate; 72. Drainage cone; 73. Chemical ring pipe; 731. Inner ring pipe; 7311. Extension pipe; 732. First connecting pipe; 733. Second connecting pipe; 7331. 74. Connecting hole; 741. Blowing mechanism; 742. Chemical tank; 743. End cap; 744. Exhaust port; 745. Solenoid valve; 746. Air pipe; 747. Gas cylinder; 75. Sewage pipe; 76. Main air injection pipe; 8. Workbench; 9. Conveying pipeline; 10. Cyclone dust collector; 11. Dust collection seat; 12. Exhaust pipe; 121. Fixed plate; 122. Sealing cylinder; 123. Tension spring; 124. Pressurized air pipe; 125. Output shaft; 13. Filter tube; 14. Cleaning ring. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the invention in a schematic manner, and therefore only show the components relevant to the invention.

[0033] Please refer to Figures 1-14. A petrochemical waste gas treatment device includes a pipeline for conveying waste gas. The pipeline includes a straight pipe section 1, a throat section 2, and an output section 6. A tower-spring shaped circulating water pipe 3 is installed within the straight pipe section 1. The circulating water pipe 3 has an outwardly extending inlet 31 and an outlet 32. Since chemical waste gas usually has a certain temperature, when the high-temperature waste gas contacts the circulating water pipe 3, the waste gas temperature can be effectively utilized to heat the water inside the circulating water pipe 3. Simultaneously, the tower-spring shaped circulating water pipe 3 not only does not affect the flow of waste gas but also increases the contact area with the waste gas, absorbing the waste gas temperature to a greater extent. The inner diameter of the throat section 2 is smaller than that of the straight pipe section 1 and the output section 6. Section 6, with its variable diameter structure, can accelerate the flow rate of the exhaust gas. The outer wall of the throat section 2 is provided with a washing ring pipe 5. Multiple nozzles 51 are fixed in a circumferential array of the washing ring pipe 5. The nozzles 51 extend inward through the pipe wall. The washing liquid is transported to the nozzles 51 through the washing ring pipe 5 and sprayed into the high-speed exhaust gas to achieve washing and purification of soluble pollutants. At this time, the liquid captures particulate impurities and enters the treatment tower 7 along with the exhaust gas conveying direction. The output section 6 is connected to the outer wall of the treatment tower 7. The treatment tower 7 is provided with a particulate capture mechanism, and the top of the treatment tower 7 is connected to the cyclone dust collector 10 through the conveying pipe 9. The top of the cyclone dust collector 10 is provided with an exhaust pipe 12.

[0034] During operation, the high-temperature waste gas generated from petrochemical production first enters the straight pipe section 1. After entering the straight pipe section 1, the circulating water pipe 3 absorbs the heat of the waste gas. After circulation, it can heat the raw materials, saving energy. At the same time, the waste gas also has a whitening effect after cooling down. A U-shaped liquid seal reserved pipe 4 is also provided below the straight pipe section, which facilitates the collection and discharge of condensate when it is generated inside. Then the waste gas enters the throat section 2 with a reduced diameter. Due to the reduced inner diameter of the throat section 2, a strong shearing force is generated through the Venturi effect. The shearing force cuts the gas and liquid into fine water mist. When the waste gas passes through at high speed, the washing liquid is sprayed into the ring through the nozzle 51. After spraying, the washing liquid forms a liquid mist, thereby capturing particulate impurities such as dust in the waste gas. The captured liquid and impurities enter the treatment tower 7 with the waste gas flow. After entering the treatment tower 7, the dust (particle) water mist settles and separates under the action of gravity. After separation, the liquid mist and dust particles fall to the bottom of the treatment tower by gravity and are finally discharged through the drain pipe 75. The separated waste gas is transported upward.

[0035] Please refer to Figures 6 and 10 again. During separation, some fine dust particles and water mist will continue to be conveyed upward with the exhaust gas. In order to further separate the fine dust particles in the exhaust gas, a particle capture mechanism is set up. The particle capture mechanism includes a particle capture disk 71 fixed to the inner wall of the treatment tower 7. Multiple baffles 711 are arranged in sequence in the particle capture disk 71. The baffles 71 are wavy. A first arc-shaped bending plate 711 and a second arc-shaped bending plate 712 are fixed on the baffles 71 along their own length direction. The first arc-shaped bending plate 711 and the second arc-shaped bending plate 712 are both arc-shaped and inclined downward.

[0036] Therefore, the fine dust particles and water mist conveyed upward are captured and condensed by the baffle plate 711 and fall into the bottom of the treatment tower 7, and are eventually discharged through the drain pipe 75.

[0037] Understandably, to remove water mist above the particle capture plate 71, a demisting plate can be installed above it. The demisting plate removes water mist and reduces pressure loss, thus reducing energy consumption.

[0038] Furthermore, the first arc-shaped bend plate 712 is fixed at the top arch of the outer wall of the baffle plate 711, the second arc-shaped bend plate 713 is located above the first arc-shaped bend plate 712, and the second arc-shaped bend plate 713 is arranged in the opposite direction to the first arc-shaped bend plate 712. The horizontal extension length of the first arc-shaped bend plate 712 and the second arc-shaped bend plate 713 is not less than 1 / 2 of the distance between the two baffle plates 711.

[0039] Please refer to Figure 11 again. That is, the distance between the two baffles 711 is L1, and the horizontal extension length of the first arc-shaped bend 712 is L2, where L2≥1 / 2L1. This setting can increase the dust and mist capture capacity of the two arc-shaped bends and prevent a large amount of dust and mist from being transported upward with the exhaust gas.

[0040] Please refer to Figures 7-9 again. In this embodiment, a guide cone 72 is fixed inside the treatment tower 7. The converging section of the guide cone 72 is opposite to the direction of the exhaust gas conveying. The guide cone 72 is fixed to the inner wall of the treatment tower 7 by a bracket, and a gap is left between the guide cone 72 and the treatment tower 7 for the exhaust gas to pass through. A drug ring pipe 73 is provided above the guide cone 72. The drug ring pipe 73 is located directly above the annular gap, and the drug powder in the drug ring pipe 73 is sprayed downward into the annular gap.

[0041] Since chemical waste gas typically contains a large amount of acidic gases, such as sulfur dioxide, calcium hydroxide powder or sodium bicarbonate powder is preferred as the reagent powder. Calcium hydroxide powder or sodium bicarbonate powder is alkaline and can react chemically with acidic / reducing sulfides to generate stable solid salt products (such as sulfates and sulfides), thereby separating and removing them from the waste gas. In addition, since the reagent is in powder form, the contact area with the waste gas can be increased (large specific surface area), and it can be evenly dispersed by airflow to avoid incomplete local reactions. At the same time, the products generated after the powder reaction are solid, eliminating the need for additional wastewater treatment and reducing treatment costs when treating sulfides in waste gas.

[0042] Specifically, an inner ring tube 731 is suspended and fixed inside the drug ring tube 73. The inner ring tube 731 is provided with a first connecting tube 732 that is connected to it. The drug ring tube 73 is provided with a second connecting tube 733 that is connected to it. The bottom of the drug ring tube 73 is provided with a connecting hole 7331. The bottom of the inner ring tube 731 is provided with an extension tube 7311. The extension tube 7311 extends vertically through the drug ring tube 73 into the annular gap. The connecting hole 7331 and the extension tube 7311 are arranged alternately.

[0043] Since the reagent ring pipe 73 is located directly above the annular gap, the reagent powder in both the reagent ring pipe 73 and the inner ring pipe 731 can be sprayed vertically into the gap, thereby making uniform contact with the upward exhaust gas and improving the desulfurization effect.

[0044] To ensure that the powdered medicine can be sprayed out in an orderly and uniform manner, a workbench 8 is fixed around the treatment tower 7. Two sets of blowing mechanisms 74 for triggering the powdered medicine are symmetrically arranged on the workbench 8. The two sets of blowing mechanisms 71 operate alternately. The two sets of blowing mechanisms 74 are respectively connected to the first connecting pipe 732 and the second connecting pipe 733. The blowing mechanism 74 includes a medicine tank 741 and a solenoid valve 744. One side of the medicine tank 741 is connected to the first or second connecting pipe through an air pipe, and the other side is connected to the solenoid valve 744 through an air pipe. One side of the solenoid valve 744 is connected to a (high-pressure) gas cylinder 746 through an air pipe. The end of the gas cylinder 746 is provided with a gas injection main pipe 76 connected to a gas source.

[0045] The main gas injection pipe 76 is connected to an external gas source, such as an air pump. After the air pump is running, the air is pressurized into the gas cylinder 746. When it is necessary to spray the agent into the corresponding pipeline, the solenoid valve 744 opens, and the high-pressure gas in the gas cylinder 746 instantly sprays the gas into the corresponding pipeline. When sprayed, the agent powder passes through the high-pressure airflow, causing the agent powder to enter the pipe. In this way, the agent powder will be discharged through the corresponding connecting hole or extension pipe.

[0046] In this embodiment, the workbench 8 not only provides a stable mounting platform for the blowing mechanism 74, but also enables the two symmetrically arranged blowing mechanisms to achieve one-to-one directional control. The two mechanisms correspond to the first connecting pipe 732 and the second connecting pipe 733 respectively. After independent connection, the pipeline pressure conflict when a single mechanism supplies two pipes is avoided. The two blowing mechanisms 71 operate alternately to avoid the flow superposition and spray disorder caused by the simultaneous spraying of two streams of drug powder. Furthermore, the high-speed response characteristics of the solenoid valve 744 can flexibly match the real-time fluctuations of the sulfur content and flow of the exhaust gas, dynamically adjust the blowing frequency, and ensure the orderly rhythm of drug spraying from the source.

[0047] Therefore, the uniformity of agent spraying in the two pipelines (the agent ring pipe and the inner ring pipe) is ensured. On the one hand, the agent ring pipe 73 and the inner ring pipe 731 are independently supplied with materials through the second connecting pipe 733 and the first connecting pipe 732, respectively, which avoids the problem of local flow concentration when using a single pipe. On the other hand, the connecting hole 7331 and the extension pipe 7311 are arranged alternately and sprayed vertically into the gap, which allows the agent powder to form a coverage area without dead angles within the annular gap, completely solving the pain points of uneven agent distribution and insufficient contact with exhaust gas in traditional single-pipe spraying. In use, uniform material supply can be achieved simply by alternating control of the air source, which not only reduces the operation and maintenance costs of the equipment but also has strong practicality.

[0048] As a preferred embodiment, the top of the medicine container 741 is provided with an end cap 742, and the end cap 742 is surrounded by an exhaust port 743. The inner wall of the exhaust port 743 is provided with a filter cloth to prevent the medicine from seeping out. In order to improve the dispersibility of the medicine powder, the bottom of the medicine container 741 is provided with an air blowing pipe 745, which is connected to the main air injection pipe 76. During use, the air pump delivers an airflow that is much greater than the airflow discharged through the exhaust port 743. The air pump continuously delivers air, at which time a portion of the air enters the gas cylinder 746 for pressurization, and another portion of the air is injected into the medicine container 741 through the air blowing pipe 745. After entering the medicine container 741, the powder is suspended inside, making it easier to enter the corresponding pipeline with the pressurized airflow, thereby improving the uniformity of the medicine powder in the annular gap.

[0049] Because alkaline powder desulfurization produces solid products (CaSO3, CaSO4, Na2SO3, NaHSO3, etc.), these solid products must be separated by subsequent dust collectors, otherwise it will cause pipe blockage, equipment wear, or secondary dust generation with the exhaust gas.

[0050] Furthermore, a cyclone dust collector 10 is provided to remove the solid products generated during desulfurization. Please refer to Figures 12-14 again. The conveying pipe 9 is tangent to the inner wall of the cyclone dust collector 10. A dust collection seat 11 is provided at the bottom of the cyclone dust collector 10. Multiple filter pipes 13 are provided in the exhaust pipe 12. After dust removal, the exhaust gas enters the filter pipes 13 and is discharged vertically upward.

[0051] The filter tube 13 is fixed to the inner wall of the exhaust pipe 12 by a fixing plate 121. A vertical sealing cylinder 122 is provided at the center of the multiple filter tubes 13. An output shaft 125 that can be raised and lowered is provided inside the sealing cylinder 122. The inner top wall of the sealing cylinder 122 is connected to the surface of the output shaft 125 by a tension spring 123. The bottom end of the output shaft 125 is provided with multiple cleaning rings 14. Each cleaning ring 14 corresponds to one of the filter tubes 13, and the inner wall of the cleaning ring 14 is in contact with the outer wall of the filter tube 13. The outer wall of the sealing cylinder 122 is connected to a pressurized air pipe 124, which is connected to an external air source. When the air source is injected into the sealing cylinder 122, the output shaft 125 drives the cleaning ring 14 to move downward. When the air source stops injecting, the cleaning ring is reset by the tension spring.

[0052] Since the conveying pipe 9 is tangential to the inner wall of the cyclone dust collector 10, the exhaust gas enters the dust collector tangentially through the conveying pipe 9 and forms a high-speed rotating cyclone airflow. Larger solid products in the airflow are thrown towards the wall by centrifugal force and then settle down to the bottom dust collection seat 11, completing the initial separation of large dust particles. The exhaust gas that has been pre-dust removed enters the filter tube 13 through the filter holes, and the fine solid dust is intercepted by the filter medium. The purified exhaust gas is discharged vertically upward along the filter tube, achieving deep purification of fine dust.

[0053] When fine solid products adhere to the filter tube 13, the filtration and removal effect will be affected. At this time, after the air source is injected into the sealing cylinder 122, the output shaft 125 drives the cleaning ring 14 to move downward. When the air source stops injecting, the cleaning ring is reset by the tension spring. In this way, the cleaning ring can scrape the products on the outer wall of the filter tube 13 in real time by moving up and down around the filter tube 13. The scraped products also fall into the dust collection seat 11. There is no need to frequently stop the machine to disassemble and clean the filter tube, which reduces the labor cost of manual maintenance and avoids production interruption losses caused by machine stoppage. At the same time, the reset design of the tension spring makes the self-cleaning action more stable, which greatly extends the service life of the filter tube and reduces the cost of consumable replacement.

[0054] In this embodiment, the reciprocating stroke range of the cleaning ring 14 is large, which can improve the cleaning efficiency and achieve better results than traditional pulse dust removal.

[0055] Based on the above embodiments, the cleaning ring 14 can also be configured as a hollow ring with a blow hole at the bottom. The cleaning ring is connected to a telescopic air pipe. When in use, the cleaning ring 14 moves up and down repeatedly, and air is blown out from the blow hole and blown directly onto the outer wall of the filter tube 13. While scraping off the attached products, it blows them off, further improving the cleaning effect and ensuring continuous filtration.

[0056] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A petrochemical waste gas treatment device, characterized in that, The system includes a pipeline for transporting waste gas, comprising a straight pipe section, a throat section, and an output section. The straight pipe section contains a tower-spring shaped circulating water pipe with outwardly extending inlet and outlet. The inner diameter of the throat section is smaller than that of the straight pipe section and the output section, and its outer wall is equipped with a washing ring pipe. Multiple nozzles are fixed in a circumferential array on the washing ring pipe, extending inward through the pipe wall. The output section communicates with the outer wall of a treatment tower. The treatment tower contains a particle capture mechanism, and its top is connected to a cyclone dust collector via a conveying pipe. The top of the cyclone dust collector has an exhaust pipe.

2. The petrochemical waste gas treatment device according to claim 1, characterized in that, The particle capture mechanism includes a particle capture disk fixed to the inner wall of the processing tower. Multiple baffles are arranged sequentially inside the particle capture disk. The baffles are wavy. A first arc-shaped bending plate and a second arc-shaped bending plate are fixed along the length of the baffles. Both the first arc-shaped bending plate and the second arc-shaped bending plate are arc-shaped and inclined downward.

3. The petrochemical waste gas treatment device according to claim 2, characterized in that, The first arc-shaped bend plate is fixed at the top arch of the outer wall of the baffle plate, the second arc-shaped bend plate is located above the first arc-shaped bend plate and is arranged in the opposite direction to the first arc-shaped bend plate, and the horizontal extension length of the first arc-shaped bend plate and the second arc-shaped bend plate is not less than 1 / 2 of the distance between the two baffle plates.

4. The petrochemical waste gas treatment device according to any one of claims 1-3, characterized in that, A guide cone is fixed inside the treatment tower. The constriction section of the guide cone is opposite to the direction of the exhaust gas transport. The guide cone is fixed to the inner wall of the treatment tower by a bracket, and a gap is left between the guide cone and the treatment tower for the exhaust gas to pass through. A drug ring pipe is provided above the guide cone. The drug ring pipe is located directly above the annular gap. The drug powder in the drug ring pipe is sprayed downward into the annular gap.

5. The petrochemical waste gas treatment device according to claim 4, characterized in that, An inner ring tube is suspended and fixed inside the drug ring tube. The inner ring tube is provided with a first connecting tube and a second connecting tube. The bottom of the drug ring tube is provided with a connecting hole and the bottom of the inner ring tube is provided with an extension tube. The extension tube extends vertically into the annular gap through the drug ring tube. The connecting hole and the extension tube are arranged alternately.

6. The petrochemical waste gas treatment device according to claim 5, characterized in that, A workbench is fixed around the processing tower. Two sets of blowing mechanisms for triggering the powder are symmetrically arranged on the workbench. The two blowing mechanisms are respectively connected to the first connecting pipe and the second connecting pipe. The blowing mechanism includes a medicine tank and a solenoid valve. One side of the medicine tank is connected to the first or second connecting pipe through an air pipe, and the other side is connected to the solenoid valve through an air pipe. One side of the solenoid valve is connected to a gas cylinder through an air pipe. The end of the gas cylinder is provided with a main gas injection pipe connected to a gas source.

7. The petrochemical waste gas treatment device according to claim 6, characterized in that, The top of the medicine container is provided with an end cap, and the end cap is provided with an exhaust hole around it. The inner wall of the exhaust hole is provided with a filter cloth to prevent the medicine from leaking out. The bottom of the medicine container is provided with an air blowing pipe, which is connected to the main air injection pipe.

8. The petrochemical waste gas treatment device according to claim 1, characterized in that, The conveying pipe is tangent to the inner wall of the cyclone dust collector. The bottom of the cyclone dust collector is equipped with a dust collection seat. The exhaust pipe is equipped with multiple filter tubes. After dust removal, the exhaust gas enters the filter tubes and is discharged vertically upward.

9. The petrochemical waste gas treatment device according to claim 8, characterized in that, The filter tube is fixed to the inner wall of the exhaust pipe by a fixing plate. A vertical sealing cylinder is provided at the center of multiple filter tubes. An output shaft that can be raised and lowered is provided inside the sealing cylinder. The inner top wall of the sealing cylinder is connected to the surface of the output shaft by a tension spring. Multiple cleaning rings are provided at the bottom end of the output shaft. Each cleaning ring corresponds to a filter tube, and the inner wall of the cleaning ring is in contact with the outer wall of the filter tube.

10. The petrochemical waste gas treatment device according to claim 9, characterized in that, The outer wall of the sealing cylinder is connected to a pressurized air pipe, which is connected to an external air source.

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