Chemical waste gas purification tower

Abstract

The utility model provides a chemical waste gas purification tower, which relates to the technical field of environmental protection equipment and comprises a lower waste gas treatment section, a middle waste gas treatment section, an upper waste gas treatment section, a waste gas inlet pipe, a purified gas outlet pipe, a circulating pump, a spraying buffer tank, a liquid supplementing pipe and a centralized treatment shaft, the lower waste gas treatment section, the middle waste gas treatment section and the upper waste gas treatment section jointly form a waste gas treatment tower. The gradual change design of the tower body structure is ingeniously applied to the equipment, and the waste gas treatment middle section adopts a structure with a wide upper part and a narrow lower part, so that the flow velocity of waste gas is effectively slowed down, natural sedimentation of particulate matters in the waste gas is promoted, and a good foundation is laid for subsequent purification steps. Meanwhile, due to the synergistic effect of the cleaning scrapers and the centralized treatment shaft, particulate matters attached to the tower wall are automatically cleaned, equipment blockage and performance reduction are prevented, and the maintenance period and the service life of the equipment are remarkably prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection equipment, in particular to a chemical waste gas purification tower. Background Art

[0002] In the process of chemical industrial production, waste gas emission is an inevitable problem. These waste gases often contain a large amount of harmful substances and particulate matters, posing a serious threat to the environment and human health. Traditional waste gas treatment methods often have problems such as low purification efficiency, high energy consumption, high operating costs, and possible secondary pollution, making it difficult to meet the increasingly strict environmental protection requirements and the needs of sustainable development.

[0003] Traditional waste gas treatment towers usually adopt a straight cylinder structure. The waste gas has a relatively fast flow rate in the tower, and it is difficult for particulate matters to settle effectively, resulting in poor purification effects. At the same time, particulate matters are easily attached to the tower wall and need to be manually cleaned regularly, which not only increases the maintenance cost but also may affect the normal operation of the equipment. In addition, a single purification method often has difficulty in dealing with complex and variable waste gas components, resulting in limited purification efficiency.

[0004] In terms of spray purification, traditional spray systems often have problems such as uneven spraying, relatively large liquid mist particles, and insufficient contact with waste gas, affecting the purification effect. At the same time, the treatment of the waste water after spraying is also a major problem. If directly discharged, it will cause environmental pollution, and improper treatment will increase the operating cost.

[0005] Gas-solid separation is a key link in waste gas treatment. However, traditional methods often have difficulty in efficiently intercepting and collecting solid particles, resulting in some particulate matters being discharged with the purified gas, causing secondary pollution. In addition, the energy consumption problem in the gas-solid separation process is also a major challenge. Content of the Utility Model

[0006] The utility model relates to a chemical waste gas purification tower, which ingeniously uses the gradient design of the tower body structure. The middle section of the waste gas treatment adopts a structure that is wider at the top and narrower at the bottom, effectively slowing down the flow rate of the waste gas and promoting the natural settlement of particulate matters in the waste gas, laying a good foundation for subsequent purification steps. At the same time, the coordinated action of the cleaning scraper and the centralized treatment shaft not only automatically removes the particulate matters attached to the tower wall, prevents equipment blockage and performance degradation, but also significantly extends the maintenance cycle and service life of the equipment.

[0007] The first aspect of the utility model provides a chemical waste gas purification tower, which specifically includes: a waste gas treatment lower section, a waste gas treatment middle section, a waste gas treatment upper section, a waste gas inlet pipe, a clean gas outlet pipe, a circulation pump, a spray buffer tank, a liquid replenishment pipe and a centralized treatment shaft; the waste gas treatment lower section, the waste gas treatment middle section and the waste gas treatment upper section together constitute a waste gas treatment tower, a waste gas inlet pipe is provided at a position near the upper end of the waste gas treatment lower section, and a liquid replenishment pipe is provided on the waste gas treatment lower section on the other side; a clean gas outlet pipe is provided at a position near the upper end of the waste gas treatment upper section; a spray buffer tank is connected to the middle part of the upper end of the waste gas treatment upper section; a centralized treatment shaft is vertically rotatably installed between the waste gas treatment middle section, the waste gas treatment upper section and the middle part of the spray buffer tank; a circulation pump is fixedly provided on one side of the lower end of the waste gas treatment lower section, the circulation pump is connected to the inner cavity of the waste gas treatment lower section through a dust reduction liquid suction pipe, and the liquid outlet end of the circulation pump is communicated with the inner cavity of the spray buffer tank through the dust reduction liquid inlet pipe.

[0008] Optionally, the exhaust gas treatment middle section is a tower structure that is wide at the top and narrow at the bottom, and a cleaning scraper is fixed vertically along the inclined surface on one side of the inner cavity side wall of the exhaust gas treatment middle section.

[0009] Optionally, a spray hood that is narrow on the top and wide on the bottom is fixed downward at the upper end of the inner cavity of the upper section of the exhaust gas treatment section corresponding to the position of the spray buffer tank, and a gap is left between the edge of the spray hood and the side wall of the inner cavity of the upper section of the exhaust gas treatment section. A gas gathering hood that is narrow on the top and wide on the bottom is fixed at the lower middle part of the inner cavity of the upper section of the exhaust gas treatment section, and the lower end edge of the gas gathering hood is in contact with the side wall of the inner cavity of the upper section of the exhaust gas treatment section. The upper end of the gas gathering hood is an outward-expanding structure, and the upper port diameter of the gas gathering hood is slightly smaller than the lower port diameter of the spray hood, and the inner end of the clean gas outlet pipe is at the height of the spray hood.

[0010] Optionally, downward spray pipes are distributed in an annular manner on the portion extending from the lower end of the spray buffer tank to the upper section of the exhaust gas treatment.

[0011] Optionally, a portion of the centralized treatment shaft located at the lower end of the inner cavity of the middle section of the waste gas treatment is fixed with an inverted cone-shaped spiral pneumatic wheel;

[0012] The centralized treatment shaft is located at the junction of the waste gas treatment middle section and the waste gas treatment upper section and is fixedly provided with a gas-solid separation cylinder body which is wide at the top and narrow at the bottom, and the side wall of the gas-solid separation cylinder body is tangent to the cleaning scraper;

[0013] A conical dust cover with the tip facing upward is fixedly arranged on the centralized processing shaft at the upper end of the gas-solid separation cylinder, the edge of the dust cover extends out of the upper end ring edge of the gas-solid separation cylinder, and guide strips are distributed in an annular manner on the upper part of the conical surface of the dust cover;

[0014] A water wheel is arranged on the part of the centralized processing shaft located in the inner cavity of the spray buffer tank, and the sprayed liquid from the dust reduction liquid inlet pipe impacts one side of the water wheel.

[0015] The utility model provides a chemical waste gas purification tower, which has the following beneficial effects:

[0016] First, the equipment cleverly uses the gradual design of the tower structure. The middle section of the waste gas treatment adopts a structure that is wide at the top and narrow at the bottom, which effectively slows down the waste gas flow rate and promotes the natural sedimentation of particles in the waste gas, laying a good foundation for subsequent purification steps. At the same time, the synergistic effect of the cleaning scraper and the centralized processing shaft not only automatically removes particles attached to the tower wall, preventing equipment blockage and performance degradation, but also significantly extends the maintenance cycle and service life of the equipment.

[0017] Secondly, the combined design of the spray hood and the gas collection hood greatly enhances the purification effect of chemical absorption and physical adsorption. The fine liquid mist evenly sprayed by the spray hood fully contacts the exhaust gas, achieving efficient purification; while the gas collection hood guides the purified gas to flow in an orderly manner, reducing turbulent interference, and further improving the purification efficiency and gas quality. This design not only improves the purification rate of exhaust gas, but also ensures the cleanliness of the exhaust gas, meeting strict environmental protection standards.

[0018] Furthermore, the integrated application of the centralized processing shaft and its auxiliary components is the key to improving the efficiency of gas-solid separation. The airflow generated by the spiral pneumatic wheel promotes the circulation of exhaust gas in the tower, enhancing the gas-solid separation effect; the gas-solid separation cylinder effectively intercepts and collects solid particles, preventing secondary pollution of particulate matter; the combination of the dust cover and the guide strip further optimizes the contact conditions between the spray liquid and the exhaust gas, improving the dust reduction effect. In addition, the linkage design of the water wheel and the pneumatic wheel realizes the effective conversion and utilization of energy, reduces the dependence on external power, and reduces operating costs.

[0019] Finally, the introduction of the circulation pump and dust suppression liquid system realizes the recycling and environmental protection of water resources. By extracting dust-containing dust suppression liquid, treating it and recycling it, it not only reduces the consumption of fresh water, but also avoids the environmental pollution caused by wastewater discharge. This design actively responds to the environmental protection concept of sustainable development and demonstrates the significant advantages of the equipment in energy saving and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings of the embodiment will be briefly introduced below.

[0021] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0022] In the attached picture:

[0023] Figure 1 A schematic diagram of the first axial view of the structure of the utility model is shown;

[0024] Figure 2Shows a second axonometric structural schematic diagram of the present utility model;

[0025] Figure 3 Shows a semi-section separated state axonometric structural schematic diagram of the present utility model;

[0026] Figure 4 Shows a further semi-section separated state axonometric structural schematic diagram of the present utility model;

[0027] Figure 5 Shows a partial axonometric structural schematic diagram of the centralized treatment shaft part of the present utility model.

[0028] List of reference numerals

[0029] 1. Lower section of waste gas treatment;

[0030] 2. Middle section of waste gas treatment; 201. Cleaning scraper;

[0031] 3. Upper section of waste gas treatment; 301. Gas gathering hood; 302. Spraying hood;

[0032] 4. Waste gas inlet pipe;

[0033] 6. Clean gas outlet pipe;

[0034] 7. Circulation pump; 701. Dust-removing liquid inlet pipe; 702. Dust-removing liquid suction pipe;

[0035] 8. Spraying buffer tank; 801. Spraying pipe;

[0036] 9. Liquid supplement pipe;

[0037] 10. Centralized treatment shaft; 1001. Pneumatic wheel; 1002. Gas-solid separation cylinder; 1003. Dust-removing hood; 1004. Flow guiding strip; 1005. Water wheel. Detailed implementation manners

[0038] For the purpose of making the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0039] Embodiment 1: Please refer to Figures 1 to 5 :

[0040] The utility model provides a chemical waste gas purification tower, comprising: a lower waste gas treatment section 1, a middle waste gas treatment section 2, an upper waste gas treatment section 3, a waste gas inlet pipe 4, a clean gas outlet pipe 6, a circulation pump 7, a spray buffer tank 8, a liquid supply pipe 9 and a centralized treatment shaft 10; the lower waste gas treatment section 1, the middle waste gas treatment section 2 and the upper waste gas treatment section 3 jointly form a waste gas treatment tower. A waste gas inlet pipe 4 is provided at a position near the upper end of the lower waste gas treatment section 1, and a liquid supply pipe 9 is provided on the other side of the lower waste gas treatment section 1; a clean gas outlet pipe 6 is provided at a position near the upper end of the upper waste gas treatment section 3; a spray buffer tank 8 is butt - jointed at the middle of the upper end of the upper waste gas treatment section 3; a centralized treatment shaft 10 is vertically rotatably installed between the middle of the middle waste gas treatment section 2, the upper waste gas treatment section 3 and the spray buffer tank 8; a circulation pump 7 is fixedly provided on one side of the lower end of the lower waste gas treatment section 1. The circulation pump 7 is connected to the inner cavity of the lower waste gas treatment section 1 through a dust - reducing liquid suction pipe 702, and the liquid outlet end of the circulation pump 7 is communicated with the inner cavity of the spray buffer tank 8 through a dust - reducing liquid inlet pipe 701.

[0041] Among them, the middle waste gas treatment section 2 is a tower body structure that is wider at the top and narrower at the bottom. On one side of the inner cavity side wall of the middle waste gas treatment section 2, a cleaning scraper 201 is vertically fixed along an inclined plane.

[0042] Among them, at the position corresponding to the spray buffer tank 8 at the upper end of the inner cavity of the upper waste gas treatment section 3, a spray hood 302 that is narrower at the top and wider at the bottom is fixedly provided downward. There is a gap between the edge of the spray hood 302 and the inner cavity side wall of the upper waste gas treatment section 3. At a position near the lower part of the middle of the inner cavity of the upper waste gas treatment section 3, a gas - collecting hood 301 that is narrower at the top and wider at the bottom is fixedly provided. The lower edge of the gas - collecting hood 301 is attached to the inner cavity side wall of the upper waste gas treatment section 3. The upper end of the gas - collecting hood 301 is of an outward - expanding structure, and the upper port diameter of the gas - collecting hood 301 is slightly smaller than the lower port diameter of the spray hood 302. The inner end of the clean gas outlet pipe 6 is at the height position where the spray hood 302 is located.

[0043] Among them, downward spray pipes 801 are annularly distributed on the part where the lower end of the spray buffer tank 8 extends into the upper waste gas treatment section 3.

[0044] Among them, on the part of the centralized treatment shaft 10 located at the lower end of the inner cavity of the middle waste gas treatment section 2, an inverted - cone - shaped spiral pneumatic wheel 1001 is fixedly provided;

[0045] At the position where the centralized treatment shaft 10 is located at the connection of the middle waste gas treatment section 2 and the upper waste gas treatment section 3, an air - solid separation cylinder 1002 that is wider at the top and narrower at the bottom is fixedly sleeved. The side wall of the air - solid separation cylinder 1002 is tangent to the cleaning scraper 201;

[0046] On the centralized treatment shaft 10 at the upper end of the air - solid separation cylinder 1002, a conical dust - reducing hood 1003 with a pointed tip upward is fixedly provided. The edge of the dust - reducing hood 1003 extends out of the upper ring edge of the air - solid separation cylinder 1002. On the upper half of the conical surface of the dust - reducing hood 1003, guide strips 1004 are annularly distributed;

[0047] A water wheel 1005 is provided on the part of the centralized treatment shaft 10 located inside the spray buffer tank 8, and the sprayed liquid from the dust-removing liquid inlet pipe 701 impacts one side of the water wheel 1005.

[0048] The working principle of this embodiment is as follows:

[0049] The waste gas first enters the lower section 1 of the waste gas treatment through the waste gas inlet pipe 4. This is the starting stage of the entire treatment process, preparing for the subsequent treatment process. Subsequently, the waste gas rises to the middle section 2 of the waste gas treatment. This section is designed as a tower structure that is wider at the top and narrower at the bottom, aiming to slow down the waste gas flow rate and promote the preliminary sedimentation of particulate matter in the waste gas. During this process, the cleaning scraper 201 is fixedly arranged along the inclined plane. As the centralized treatment shaft 10 rotates, the cleaning scraper 201 can effectively scrape off the particulate matter attached to the inner wall of the tower, preventing scaling and blockage.

[0050] The waste gas continues to rise to the upper section 3 of the waste gas treatment. The inner cavity of this section is designed with key components to further improve the purification efficiency. The spray hood 302 is located below the spray buffer tank 8 and evenly sprays the dust-removing liquid through the spray pipe 801 to form a fine liquid mist that fully contacts the rising waste gas, achieving a dual purification effect of chemical absorption and physical adsorption. At the same time, the design of the gas-gathering hood 301 cleverly guides the purified gas to flow upward, reducing gas turbulence and improving the purification efficiency. The purified gas finally exits through the clean gas outlet pipe 6.

[0051] As the core component of the equipment, the spiral pneumatic wheel 1001 on the centralized treatment shaft 10 generates an air flow during rotation, pushing the waste gas to circulate in the tower and enhancing the gas-solid separation effect. The gas-solid separation cylinder 1002 is located at the junction of the middle section and the upper section, and its shape is tangent to the cleaning scraper 201, effectively intercepting and collecting solid particles in the waste gas. The dust-removing hood 1003 further improves the dust-removing effect through the design of its conical surface and the guide strip 1004, which can guide the spray liquid to form a water cloth and increase the contact surface with the rising air flow.

[0052] In addition, the water wheel 1005 in the spray buffer tank 8 is rotated by the liquid sprayed from the dust-removing liquid inlet pipe 701. This design not only promotes the uniform distribution of the dust-removing liquid but also generates a certain amount of power through the rotation of the water wheel 1005 to assist the rotation of the centralized treatment shaft 10. The pneumatic wheel 1001 at the lower end of the inner cavity of the middle section 2 of the waste gas treatment can be rotated passively during the rise of the waste gas, cooperating with the water wheel 1005 to achieve effective energy conversion and utilization.

[0053] The circulation pump 7 extracts the dust-containing dust-removing liquid from the inner cavity of the lower section 1 of the waste gas treatment through the dust-removing liquid suction pipe 702. After treatment, it is sent back to the spray buffer tank 8 through the dust-removing liquid inlet pipe 701 for recycling, achieving water resource conservation and environmental protection.

[0054] In this article, the following points need to be noted:

[0055] 1. The attached drawings of the embodiments of the present utility model only relate to the structures involved in the embodiments of the present utility model, and other structures can refer to the general design.

[0056] 2. Without conflict, the embodiments of the present utility model and the features in the embodiments can be combined with each other to obtain new embodiments.

[0057] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A chemical waste gas purification tower, comprising: The waste gas treatment lower section (1), the waste gas treatment middle section (2), the waste gas treatment upper section (3), a waste gas inlet pipe (4), a clean gas outlet pipe (6), a circulation pump (7), a spray buffer tank (8), a liquid replenishing pipe (9) and a centralized treatment shaft (10); characterized in that the waste gas treatment lower section (1), the waste gas treatment middle section (2) and the waste gas treatment upper section (3) together constitute a waste gas treatment tower, the waste gas treatment lower section (1) is provided with a waste gas inlet pipe (4) at a position close to the upper end, and the waste gas treatment lower section (1) on the other side is provided with a liquid replenishing pipe (9); the waste gas treatment upper section (3) is provided with a waste gas inlet pipe (4) at a position close to the upper end a clean gas outlet pipe (6) is provided at the position of the waste gas treatment upper section (3); a spray buffer tank (8) is connected to the middle of the upper end of the waste gas treatment upper section (3); a centralized treatment shaft (10) is vertically rotatably installed between the middle of the waste gas treatment middle section (2), the waste gas treatment upper section (3) and the spray buffer tank (8); a circulation pump (7) is fixedly provided on one side of the lower end of the waste gas treatment lower section (1); the circulation pump (7) is connected to the inner cavity of the waste gas treatment lower section (1) via a dust suppression liquid suction pipe (702); and the liquid outlet end of the circulation pump (7) is connected to the inner cavity of the spray buffer tank (8) via a dust suppression liquid inlet pipe (701).

2. A chemical waste gas purification tower according to claim 1, characterized in that: The waste gas treatment middle section (2) is a tower structure that is wide at the top and narrow at the bottom, and a cleaning scraper (201) is fixedly provided vertically along an inclined surface on one side of the inner cavity side wall of the waste gas treatment middle section (2).

3. A chemical waste gas purification tower according to claim 1, characterized in that: A spray hood (302) having a narrow top and a wide bottom is fixedly provided downwardly at the position of the spray buffer tank (8) corresponding to the upper end of the inner cavity of the waste gas treatment upper section (3), and a gap is left between the edge of the spray hood (302) and the side wall of the inner cavity of the waste gas treatment upper section (3). A gas gathering hood (301) having a narrow top and a wide bottom is fixedly provided at the lower middle part of the inner cavity of the waste gas treatment upper section (3), and the lower end edge of the gas gathering hood (301) is in contact with the side wall of the inner cavity of the waste gas treatment upper section (3). The upper end of the gas gathering hood (301) is an outward expansion structure, and the upper end diameter of the gas gathering hood (301) is slightly smaller than the lower end diameter of the spray hood (302), and the inner end of the clean gas outlet pipe (6) is at the height position where the spray hood (302) is located.

4. A chemical waste gas purification tower according to claim 1, characterized in that: A downward spray pipe (801) is distributed in an annular manner on the portion of the lower end of the spray buffer tank (8) extending to the upper exhaust gas treatment section (3).

5. A chemical waste gas purification tower according to claim 1, characterized in that: An inverted cone-shaped spiral pneumatic wheel (1001) is fixedly provided on the portion of the centralized treatment shaft (10) located at the lower end of the inner cavity of the waste gas treatment middle section (2); The centralized processing shaft (10) is located at the junction of the waste gas processing middle section (2) and the waste gas processing upper section (3), and is fixedly provided with a gas-solid separation cylinder (1002) that is wide at the top and narrow at the bottom, and the side wall of the gas-solid separation cylinder (1002) is tangent to the cleaning scraper (201); A conical dust suppression hood (1003) with its tip facing upward is fixedly provided on the centralized processing shaft (10) at the upper end of the gas-solid separation cylinder (1002); the edge of the dust suppression hood (1003) extends out of the upper end ring edge of the gas-solid separation cylinder (1002); and guide strips (1004) are distributed in an annular manner on the upper half of the conical surface of the dust suppression hood (1003); A water wheel (1005) is provided on the portion of the centralized processing shaft (10) located in the inner cavity of the spray buffer tank (8), and the sprayed liquid from the dust suppression liquid inlet pipe (701) impacts one side of the water wheel (1005).

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