A purification filter device for gas engine exhaust treatment

Abstract

The present application relates to waste gas treatment technical field, specifically disclose a kind of purification filter equipment for gas generator tail gas treatment, including several main spray disc, receiving spray disc and cover spray disc being arranged in purification shell;Each main spray disc, receiving spray disc and cover spray disc form a group and form upper, middle and lower injection structure;The main spray disc is also provided with the plugging plate for plugging the injection nozzle to carry out pressure regulating;The three-layer spray structure can be greatly reacted with waste gas by being constructed, and the three-layer structure injection direction is also different, so the structure of the present application has multilayer nature, also has multidimensional spray, and the effect is better;The plugging plate is set to plugging certain injection nozzle according to need, to improve the pressure of other injection nozzle, so that injection nozzle can be adjusted or developed according to need, pressure is adjusted, maintains good injection effect, when pressure is larger, injection nozzle sundries can also be removed.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment technology, specifically to a purification and filtration device for treating exhaust gas from gas generators. Background Technology

[0002] Gas power generation is an important way to utilize gas resources in coal mines, oil and gas fields, etc. It can effectively recover low-concentration gas for power generation, reduce energy waste and air pollution. The exhaust gas generated by gas generators contains pollutants such as tar, fine dust, sulfides, nitrogen oxides and trace amounts of unburned gas. It is characterized by strong viscosity, complex composition and easy scaling and clogging. If the exhaust gas is not fully purified and is directly emitted, it will not only easily cause environmental protection standards to be exceeded, but the sticky dirt will also accumulate and block the pipes, increase the system wind resistance, affect the exhaust efficiency and operational stability of the unit, and shorten the service life of the exhaust gas treatment equipment. Firstly, existing equipment lacks a spray layer structure, resulting in poor purification targeting and insufficient gas-liquid reaction. Traditional spray equipment only adopts a uniform spray mode. After the gas exhaust gas enters the equipment from the inlet end, there is a large difference in the concentration gradient of pollutants. The inlet section has a high concentration of pollutants and a large amount of impurities, while the pollutant content at the tail end of the exhaust gas is significantly reduced. Furthermore, the equipment lacks internal self-cleaning capabilities, and its operation relies on manual shutdown maintenance, resulting in poor continuity and operational economy. Conventional spray purification equipment lacks an internal automatic cleaning structure. During continuous operation, sticky tar, fine dust, and reaction products in the exhaust gas will continuously adhere to the nozzles, inner walls of the tower, packing layers, and filter components, gradually accumulating scale, clogging flow channels and filter pores. Scale accumulation will directly lead to spray failure, reduced gas-liquid contact area, and continuous degradation of purification performance, causing unit exhaust pressure buildup and abnormal operating conditions. Summary of the Invention

[0003] The purpose of this invention is to provide a purification and filtration device for treating exhaust gas from gas generators, so as to solve the problems mentioned in the background art.

[0004] A purification and filtration device for treating exhaust gas from a gas generator, comprising: a purification shell, The purification shell is equipped with several main spray discs, receiving spray discs and covering spray discs; Each of the main spray disc, receiving spray disc and covering spray disc forms a set to form an upper, middle and lower spray structure; The purification shell is provided with an air intake pipe that runs through it, and the air intake pipe is provided with a spray nozzle that cooperates with the spray structure. The main spray plate is also equipped with a sealing plate for sealing the spray nozzles to regulate pressure.

[0005] Preferably, each of the main spray discs, receiving spray discs, and covering spray discs is provided with an air nozzle, a connecting frame, and a self-driving wheel; One end of the connecting frame is fixed to the main spray plate, the receiving spray plate and the covering spray plate, and the other end is connected to the purification shell through the self-driving wheel; The self-driving wheel is threadedly connected to the connecting frame, and a slide rail that cooperates with the self-driving wheel is fixed on the purification shell.

[0006] Preferably, a telescopic rod is provided between the sealing plate and the main spray disc, and a cleaning rod that can enter the air nozzle is fixed on the side of the sealing plate away from the telescopic rod, and a plurality of cleaning bodies are fixed on the surface of the cleaning rod.

[0007] Preferably, the top of the purification shell is connected to an auxiliary purification shell, and the bottom is connected to a connected recycling bin. The recycling bin is also equipped with a circulation assembly, which includes a pipe and a pump body installed on the pipe. The pipe is connected to the jet nozzle.

[0008] Preferably, the attached shell is provided with a plurality of passive purification racks, which are arranged at equal intervals from top to bottom inside the attached shell and are arranged at an angle downwards.

[0009] Preferably, the passive purification rack includes several equidistant wires inside, one end of the passive purification rack facing the purification shell is connected to a temporary storage tank, and the other end away from the purification shell is connected to a release tank. The temporary storage tank is also equipped with a pump, and the pump is connected to a hose, which is connected to the release tank.

[0010] Preferably, a number of the wire ropes are further provided with scrapers, and the scrapers are provided with scraping cavities corresponding to the wire ropes.

[0011] Preferably, an extension cavity is provided between the two scraping cavities on the scraper. The extension cavity connects the two scraping cavities; A top blade is fixed to the inner wall of the scraping cavity, and the top blade has a triangular cross-section.

[0012] Preferably, a storage box is provided in the extended cavity, the storage box is embedded in the scraper, and is movable.

[0013] Preferably, the main spray disc, the receiving spray disc, and the covering spray disc are all arc-shaped structures, and the covering spray disc can be moved and fitted together to form an arc-shaped structure.

[0014] This invention has at least the following beneficial effects: 1. When using this solution, the three-layer spray structure can react and combine with the exhaust gas to a great extent. Moreover, the spray direction of the three layers is also different. It can be said that the structure of this solution has both multi-layer and multi-dimensional spraying, resulting in better effect. The sealing plate can block a certain nozzle as needed, thereby increasing the pressure of other nozzles. This allows for adjustment or opening of nozzles as needed to regulate pressure and maintain good spraying effect. When the pressure is high, it can also remove debris from the nozzles. In addition, the cleaning rod can also unclog the nozzles when other nozzles are inserted to prevent blockage. 2. Due to the silk rope in this solution, the flowing liquid can form a water curtain, which greatly increases the contact area with the gas. After the gas reacts with the liquid, it passes through a series of purification checkpoints. The gas combines with the water curtain on the passive purification frame, and the reacted substances adhere to the silk rope, further improving the purification effect. When cleaning the equipment, the scraper can scrape off the adhering substances on the silk rope, improving cleaning efficiency. The extension cavity can temporarily relieve the squeezed adhering substances and prevent excessive accumulation of adhering substances at the front of the scraper. The storage box has been further improved to facilitate the collection and cleaning of adhering substances. 3. The distance between the main spray plate, receiving spray plate, and cover spray plate can be adjusted as needed through the movable connecting frame. When necessary, multiple receiving spray plates can be combined to form a large-area arc-shaped structure, which acts like a lid to cover the gas ejected from the nozzle, preventing the gas from escaping too quickly. It can also block the liquid sprayed upward from the lower nozzle, allowing the scattered liquid to gather and fall to the ground as soon as possible, enter the storage box, and re-enter the circulation, thus accelerating efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the internal structure of the side in Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the front internal structure in Embodiment 1 of the present invention; Figure 3 For the present invention Figure 2 A magnified view of the structure at point A in the middle; Figure 4 This is a three-dimensional structural diagram of the main spray disc, receiving spray disc, and covering spray disc in Embodiment 2 of the present invention; Figure 5 This is a three-dimensional structural diagram of the sealing plate and cleaning rod in Embodiment 2 of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the passive purification rack in Embodiment 3 of the present invention; Figure 7 This is a schematic diagram of the passive purification rack and structure in Embodiment 3 of the present invention; Figure 8This is a top view schematic diagram of the wire rope and scraper structure in Embodiment 3 of the present invention; Figure 9 This is a schematic diagram of the cover spray disc assembly structure in Embodiment 4 of the present invention; Figure 10 This is a schematic diagram of the spray direction structure of the main spray disc, receiving spray disc, and covering spray disc in Embodiment 1 of the present invention.

[0016] In the diagram: 1. Purification shell; 2. Main spray disc; 201. Telescopic rod; 202. Sealing plate; 203. Cleaning rod; 204. Cleaning body; 3. Receiving spray disc; 4. Covering spray disc; 5. Air inlet pipe; 501. Spray nozzle; 6. Attached purification shell; 7. Recovery box; 8. Passive purification frame; 801. Wire rope; 802. Release box; 803. Temporary storage box; 804. Pump; 9. Scraper; 901. Scraping chamber; 902. Top knife; 903. Extension chamber; 904. Storage box; 10. Connecting frame; 1001. Self-driving wheel. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example 1 Please see Figure 1 - Figure 3 and Figure 10 A purification and filtration device for treating exhaust gas from a gas generator includes a purification shell 1, which contains several main spray discs 2, receiving spray discs 3, and covering spray discs 4. Each main spray disc 2, receiving spray disc 3, and covering spray disc 4 form a set to create an upper, middle, and lower spray structure; An air intake pipe 5 is provided inside the purification shell 1, and a spray nozzle 501 that cooperates with the spray structure is provided on the air intake pipe 5. The main spray plate 2 is also equipped with a sealing plate 202 for pressure adjustment by blocking the spray nozzle 501.

[0019] Several main spray discs 2, receiving spray discs 3 and covering spray discs 4 are each equipped with air nozzles, connecting frames 10 and self-driving wheels 1001; One end of the connecting frame 10 is fixed to the main spray plate 2, the receiving spray plate 3 and the covering spray plate 4, and the other end is connected to the purification shell 1 via the self-driving wheel 1001.

[0020] The top of the purification shell 1 is connected to the attached purification shell 6, and the bottom is connected to the connected recycling box 7. The recycling box 7 is also equipped with a circulation assembly, which includes a pipe and a pump body installed on the pipe. The pipe is connected to the jet nozzle.

[0021] Specifically, when the exhaust gas enters the equipment through the intake pipe 5, the jet nozzle on the intake pipe 5 sprays out the exhaust gas. At this time, the liquid spray nozzle 501 on the main spray plate 2 sprays liquid first. The liquid spray nozzles 501 on the main spray plate 2, the receiving spray plate 3, and the covering spray plate 4 need to be set at an angle. The liquid spray nozzles 501 are aligned with the range of the jet nozzle diffusion. The liquid is a urea solution. like Figure 10 It should be noted that this diagram illustrates the diffusion direction of the sprayed liquid, rather than absolutely limiting the spraying distance and range. Through the distributed structure, a three-layer spraying structure can be constructed, which can react and combine with the exhaust gas to a great extent. Moreover, the spraying directions of the three layers are also different. It can be said that the structure of this solution has both multi-layer and multi-dimensional spraying, resulting in better effects. Furthermore, the concentration of the sprayed liquid can be adjusted according to the gas conditions. For example, the concentration can be set to the highest on the main spray plate 2, the second highest on the receiving spray plate 3, and the lowest on the covering spray plate 4, thus saving resources. This requires each spray nozzle 501 to be connected to an external medicine tank with different concentrations.

[0022] Example 2 Please see Figure 4 and Figure 5 A purification and filtration device for treating exhaust gas from a gas generator includes a telescopic rod 201 disposed between a sealing plate 202 and a main spray disc 2, a cleaning rod 203 that can enter the air nozzle fixed on the side of the sealing plate 202 away from the telescopic rod 201, and a plurality of cleaning bodies 204 fixed on the surface of the cleaning rod 203. Specifically, this embodiment is an improvement on the first embodiment. This solution can adjust the pressure internally. For example, a gas pressure sensor can be set at the inlet end of the air intake pipe 5. Of course, a pressurizing device can also be set between the generator and the air intake pipe 5 to enhance the pressure inside the air intake pipe 5. The air intake pipes 5 have the same diameter and the number of jet nozzles on them is fixed and equidistant. Given the pressure of the air intake pipe 5, the pressure of the jet nozzles can be roughly calculated even without setting pressure sensors on the jet nozzles. Of course, it would be best to equip each nozzle with a pressure sensor. Nozzles with air pressure measurement capabilities are existing technology, so I won't go into too much detail. As needed, the controller can be used to start the self-driving wheel 1001. The self-driving wheel 1001 can be connected to the controller wirelessly or via wire. By setting the stroke, the telescopic rod 201 can be aligned with the corresponding air nozzle, the corresponding sealing plate 202 can be used to block the air nozzle, and the cleaning rod 203 can be inserted into the air nozzle to clear the blockage. At the same time, due to the blockage of the jet nozzle, the pressure of other jet nozzles increases accordingly. At this time, the pressure of a certain jet nozzle can be adjusted as needed to achieve the corresponding effect, such as cleaning. If the sensor detects that the jet nozzle is different from the calculated value, it can be determined that the jet nozzle is blocked. At this point, you can choose to insert the cleaning rod 203 into the jet nozzle, or you can increase the pressure of the jet nozzle by blocking other jet nozzles, allowing it to self-block. Furthermore, this allows for a rotation system. For example, six jet nozzles are installed on the air intake pipe 5. Three of them are blocked, while the other three remain open. When rotating, the open nozzles are blocked, and the previously blocked nozzles are opened, thus improving service life and purification efficiency.

[0023] Example 3 Please see Figure 6 - Figure 8 A purification and filtration device for treating exhaust gas from a gas generator includes a housing 6 containing a plurality of passive purification racks 8, which are arranged at equal intervals from top to bottom inside the housing 6 and are arranged at an angle downwards. The passive purification rack 8 includes several equidistantly arranged wire ropes 801 inside. The end of the passive purification rack 8 facing the purification shell 1 is connected to a temporary storage tank 803, and the end away from the purification shell 1 is connected to a release box 802. The temporary storage tank 803 is also equipped with a pump 804, and the pump 804 is connected to a hose, which is connected to the release box 802. Several silk ropes 801 are also provided with scrapers 9, and scraper 9 is provided with scraping cavities 901 corresponding to silk ropes 801. An extension cavity 903 is provided between the two scraping cavities 901 on the scraper 9; The extension cavity 903 connects the two scraping cavities 901; A top cutter 902 is fixed to the inner wall of the scraping cavity 901. The top cutter 902 has a triangular cross-section. A storage box 904 is provided inside the extension cavity 903. The storage box 904 is embedded in the scraper 9 and is movable. Specifically, this embodiment is an improvement on embodiment three. By using the passive purification rack 8, the pre-treated gas can be further processed. At this point, based on the sprayed liquid, the gas moves upward and into the purification shell 6, where it comes into contact with the water film on the surface of the passive purification rack 8, further purifying the gas. The liquid can be ammonia, urea solution, or sodium hydroxide solution, etc. Since the passive purification rack 8 is an independent structure and is not sprayed, the reactions between the individual passive purification racks 8 do not affect each other. In this way, multiple different or the same substances can be collected in the purification shell 6. Because the liquid used in the exhaust gas is corrosive, the 801 wire rope material is selected from non-reactive materials such as Teflon, fiberglass, or titanium. Several filaments 801 are arranged at equal intervals to form a certain density. The filaments 801 are connected to the release box 802 above. The liquid medicine in the release box 802 moves downward through the filaments 801 under the action of gravity, thus forming a water curtain. When the gas encounters the water curtain, it reacts with it, and the reactants adhere to the filaments 801. When the equipment is being maintained and cleaned, the passive purification frame 8 can be removed. The release box 802 can be bolted or snapped into the attached shell 6. After the attached shell 6 is removed, the passive purification frame 8 can be taken out and the dirt on the wire rope 801 can be removed by the scraper 9 on the passive purification frame 8. At this time, the scraper 9 scrapes the dirt on the wire rope 801, and the top knife 902 cuts the dirt vertically to avoid jamming. The top knives 902 on the same side face the same direction, all towards the extension cavity 903. Therefore, the dirt squeezed out will enter the extension cavity 903 more smoothly along the side of the top knife 902. The extension cavity 903 is connected to the storage box 904, and excess dirt is squeezed into the storage box 904. The storage box 904 is designed to be pulled out within the scraper 9. Its upper opening is connected to the extension cavity 903, and its cross-section is trapezoidal, with a larger upper opening and a smaller lower opening, making it easier to collect dirt.

[0024] Example 4 Please see Figure 9 A purification and filtration device for treating exhaust gas from a gas generator includes a main spray plate 2, a receiving spray plate 3, and a covering spray plate 4, all of which are arc-shaped. Different covering spray plates 4 can be moved and fitted together to form an arc-shaped structure. A self-driving wheel 1001 is threadedly connected to a connecting frame 10, and a slide rail that cooperates with the self-driving wheel 1001 is fixed on the purification shell 1. Specifically, in this embodiment, the covering spray disk 4 can be moved as needed to form a larger arc-shaped disk, thereby covering a larger area, preventing the sprayed liquid from continuing to scatter upwards, allowing the sprayed liquid to gather quickly and fall into the recycling box 7, thus improving the circulation efficiency.

[0025] Working principle: First, exhaust gas enters through the intake pipe 5. After entering the intake pipe 5, the exhaust gas is sprayed into the purification shell 1 through the jet nozzles on it. At this time, the main spray plate 2, the receiving spray plate 3, and the covering spray plate 4 corresponding to the jet nozzles are activated. First, the liquid spray nozzle 501 on the main spray plate 2 sprays liquid that collides obliquely with the exhaust gas for purification. Then, the receiving spray plate 3 sprays liquid obliquely upward, and then the covering spray plate 4 sprays liquid obliquely downward. This forms a multi-dimensional and multi-layer spray system with different directions and levels, which fully covers the exhaust gas. The purified gas rises on its own and enters the auxiliary purification shell 6, which is connected to the purification shell 1. It comes into contact with the water curtain on the multiple passive purification frames 8 inside the auxiliary purification shell 6, and leaves the reactants on the wire rope 801. Each passive purification frame 8 is an independent system, in which the liquid is first released through... The liquid flows diagonally downwards from the wire rope 801 into the connected temporary storage tank 803. Then, the pump 804 in the temporary storage tank 803 pumps the liquid through the hose to the release tank 802, completing the circulation. When cleaning is required, the scraper 9 is pulled. The scraper 9 squeezes the reactants attached to the wire rope 801 and enters the scraping chamber 901 and the extension chamber 903 through the squeeze. Finally, a part of it enters the storage box 904. When it is necessary to block or clean the nozzle, the telescopic rod 201 is activated. The telescopic rod 201 drives the threaded sealing plate 202 to contact the nozzle. The cleaning rod 203, which is fixed to the sealing plate 202, enters the nozzle to complete the sealing. By activating the self-driving wheel 1001 on the control connecting frame 10, the main spray plate 2, the receiving spray plate 3, and the covering spray plate 4 can be moved in the purification shell 1.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A purification and filtration device for treating exhaust gas from a gas generator, characterized in that, include: Purification shell (1) The purification shell (1) is provided with several main spray discs (2), receiving spray discs (3) and covering spray discs (4). Each of the main spray disc (2), receiving spray disc (3) and covering spray disc (4) forms a set to form an upper, middle and lower spray structure; The purification shell (1) is provided with an air intake pipe (5) that runs through it, and the air intake pipe (5) is provided with a spray nozzle (501) that cooperates with the spray structure. The main spray plate (2) is also provided with a sealing plate (202) for sealing the spray nozzle (501) for pressure regulation. Each of the main spray discs (2), receiving spray discs (3) and covering spray discs (4) is equipped with a jet nozzle, a connecting frame (10) and a self-driving wheel (1001). One end of the connecting frame (10) is fixed to the main spray plate (2), the receiving spray plate (3) and the covering spray plate (4), and the other end is connected to the purification shell (1) through the self-driving wheel (1001); A telescopic rod (201) is provided between the sealing plate (202) and the main spray disc (2). A cleaning rod (203) that can enter the air nozzle is fixed on the side of the sealing plate (202) away from the telescopic rod (201). Several cleaning bodies (204) are fixed on the surface of the cleaning rod (203). The top of the purification shell (1) is connected to the attached purification shell (6), and the bottom is connected to the connected recycling box (7). The attached shell (6) is provided with a number of passive purification racks (8), which are arranged at equal intervals from top to bottom inside the attached shell (6) and are arranged diagonally downward. The passive purification rack (8) includes several equidistant wire ropes (801) inside. One end of the passive purification rack (8) facing the purification shell (1) is connected to a temporary storage tank (803), and the other end away from the purification shell (1) is connected to a release tank (802). The temporary storage tank (803) is also equipped with a pump (804), and the pump (804) is connected to a hose, which is connected to the release tank (802). Several of the silk ropes (801) are also provided with scrapers (9), and the scrapers (9) are provided with scraping cavities (901) corresponding to the silk ropes (801).

2. The purification and filtration device for treating exhaust gas from a gas generator according to claim 1, characterized in that: An extension cavity (903) is provided between the two scraping cavities (901) on the scraper (9). The extension cavity (903) connects the two scraping cavities (901); The inner wall of the scraping cavity (901) is fixed with a top knife (902), and the top knife (902) has a triangular cross-section.

3. The purification and filtration device for treating exhaust gas from a gas generator according to claim 2, characterized in that: A storage box (904) is provided inside the extension cavity (903), and the storage box (904) is embedded in the scraper (9).

4. The purification and filtration device for treating exhaust gas from a gas generator according to claim 1, characterized in that: The main spray disc (2), the receiving spray disc (3), and the covering spray disc (4) are all arc-shaped structures.

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