Horizontal type spray deodorization device for waste gas treatment

Abstract

The utility model relates to a kind of waste gas treatment horizontal type spray deodorization device, it is related to wastewater treatment technical field, including deodorization cabinet, deodorization cabinet is provided with alkali spray demisting integrated area, biological spray demisting integrated area and oxidation spray demisting integrated area activated carbon deodorization area;Spray demisting integrated area, the biological spray demisting integrated area and the oxidation spray demisting integrated area all include spray module and demisting filler, spray module includes storage tank, spray nozzle, for the liquid medicine in storage tank is pumped to the delivery pump in spray nozzle and control component, control component is used to control the start-stop of the delivery pump;Demisting filler is used to demist and keep dry to gas after spray treatment;With compact structure, less floor space, equipment appearance is more flat, no protruding part, improve the effect of system spray deodorization efficiency.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a horizontal spray deodorization device for waste gas treatment, which is used in conjunction with a waste gas treatment system with a biological treatment tank. Background Technology

[0002] Currently, in some industrial settings, limited space height prevents the installation of traditional vertical spray towers. The horizontal design of horizontal spray towers makes them more suitable for locations with limited height, enabling waste gas treatment without occupying excessive vertical space, and thus they have gained widespread application. Horizontal spray towers are commonly used in the chemical and fine chemical industries (treating acid mist, alkali mist, and small amounts of VOCs), the electronics and semiconductor manufacturing industries (purifying corrosive waste gas and fine particulate matter), and in metal surface treatment (such as acid and alkali waste gas generated from pickling and electroplating), food processing (treating oil fumes and odors), and the coating industry (paint mist and organic solvents in spraying waste gas). However, due to their relatively low height, horizontal spray towers do not have sufficient contact with the waste gas during the reaction, leading to a decrease in purification efficiency. Furthermore, for deep purification scenarios requiring multiple layers of high-efficiency packing, their horizontal spatial layout limits the thickness of the packing layer, making it difficult to achieve the treatment depth of vertical towers. In high-humidity environments, uneven internal airflow distribution may also increase the frequency of equipment maintenance. Additionally, biochemical spraying requiring biological inoculation (bacterial sludge) requires multiple manual additions of bacteria, resulting in high labor intensity and complex maintenance. Therefore, there is an urgent need for new, highly integrated horizontal spray tower technology to improve the current situation. Utility Model Content

[0003] The purpose of this invention is to provide a horizontal spray deodorization device for waste gas treatment, which solves the problems of existing horizontal spray towers having low height, insufficient contact with waste gas during reaction leading to reduced purification efficiency, and the need for multiple manual additions of bacteria for biochemical spraying that requires biological inoculation, resulting in high labor intensity and complex maintenance.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a horizontal spray deodorization device for waste gas treatment, including a deodorization box with an air inlet and an air outlet. The deodorization box is provided with an integrated alkaline spray demisting zone, a biological spray demisting zone and an oxidation spray demisting zone arranged sequentially along the direction of waste gas flow. The integrated biological spray demisting zone is connected to an external biochemical tank via a pumping assembly. The pumping assembly is used to pump the supernatant from the biochemical tank into the integrated biological spray demisting zone for spraying and contact with the exhaust gas to react.

[0005] Furthermore, an activated carbon deodorization zone is also provided inside the deodorization box and between the integrated oxidation spray demisting zone and the air outlet.

[0006] Furthermore, the integrated alkaline spray demisting zone, the integrated biological spray demisting zone, and the integrated oxidative spray demisting zone all include, along the air intake direction: The spray module includes a medicine storage tank disposed inside the odor-proof box, a spray nozzle disposed at the top inside the odor-proof box, a delivery pump for pumping the medicine liquid in the medicine storage tank to the spray nozzle, and a control component, wherein the control component is used to control the start and stop of the delivery pump, and the medicine storage tank is provided with a medicine addition port. Demisting packing material is used to demistate and keep the gas dry after spraying.

[0007] Furthermore, the deodorizing chamber is provided with a filling port for inserting the demisting filler above each of the demisting fillers, and the side of the deodorizing chamber is provided with a material removal port for removing the demisting filler.

[0008] Furthermore, it also includes a water replenishment component for automatically adding medicine to each of the medicine storage tanks. The water replenishment component includes a water replenishment pipe for replenishing water to each of the medicine storage tanks, a control valve installed on each of the water replenishment pipes, and a liquid level detector installed in each of the medicine storage tanks. The liquid level detector and the control valve are both signal-connected to the control component.

[0009] Furthermore, a pH detector is installed in the integrated alkaline spray demisting zone. The signal output terminal of the pH detector is connected to the signal receiving terminal of the control component. The pH detector is used to detect whether the pH value of the exhaust gas is within the set range, thereby controlling the start and stop of the delivery pump.

[0010] Furthermore, an ORP detector is installed in the integrated oxidation spray demisting zone. The signal output terminal of the ORP detector is connected to the signal receiving terminal of the control component. The ORP detector is used to detect whether the ORP value of the exhaust gas is within the set range, thereby controlling the start and stop of the corresponding delivery pump.

[0011] Furthermore, the integrated spray demisting zone, the integrated biological spray demisting zone, and the integrated oxidation spray demisting zone are all equipped with drainage outlets.

[0012] Furthermore, the pH value is set within the range of 9.0-10.5.

[0013] Furthermore, the ORP value is set within the range of 300 mV - 500 mV.

[0014] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: This utility model discloses a horizontal spray deodorization device for waste gas treatment. The waste gas passes through an integrated alkaline spray demisting zone, a biological spray demisting zone, and an oxidative spray demisting zone before entering an activated carbon deodorization zone. The integrated alkaline spray demisting zone removes acidic gases from the waste gas through alkaline spraying. The integrated biological spray demisting zone removes odorous gases from the waste gas through biological decomposition, while the integrated oxidative spray demisting zone oxidizes and decomposes organic pollutants and malodorous substances in the waste gas. This multi-stage treatment improves the efficiency of spray deodorization. Furthermore, the integrated biological spray demisting zone can be directly connected to an external biochemical tank, allowing the supernatant containing bacteria to be pumped directly to the integrated biological spray demisting zone, achieving "on-site" utilization. In addition, this deodorization device is a highly integrated device that occupies less space, has a flatter appearance with no protruding parts, a compact structure, contains multiple spray zones of different types, has a high volumetric load, and is easy to operate. It can be quickly installed and put into use, making it very suitable for wastewater and waste gas treatment systems with limited land. Attached Figure Description

[0015] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings: Figure 1 This is a top view of the overall structure of a preferred embodiment of the present invention; Figure 2 This is a side view of the overall structure of a preferred embodiment of the present invention; Figure 3 This is a cross-sectional view of the overall structure of a preferred embodiment of the present invention.

[0016] The reference numerals in the attached figures are explained as follows: 1. Deodorizing chamber; 11. Air inlet; 12. Air outlet; 2. Alkali spray demisting integrated area; 22. Spray nozzles; 23. Delivery pump; 24. pH detector; 3. Integrated biological spray demisting area; 4. Oxidation spray demisting integrated area; 44. ORP detector; 5. Activated carbon deodorization area; 6. Demisting filler; 7. Water supply components; 71. Water supply pipes; 72. Control valves; 13. Material inlet; 14. Drainage outlet; 15. Packing port. Detailed Implementation

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

[0018] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0020] refer to Figure 1 , Figure 2 and Figure 3 This utility model provides a horizontal spray deodorization device for treating waste gas, including a horizontally placed deodorization chamber 1. The deodorization chamber 1 is made of PP material, which has excellent corrosion resistance. One end of the deodorization chamber 1 is provided with an air inlet 11, and the other end is provided with an air outlet 12. The waste gas to be treated enters from the air inlet, and the treated waste gas is discharged from the air outlet. The direction of the arrow in the figure indicates the direction of waste gas flow.

[0021] refer to Figure 1 , Figure 2 and Figure 3Inside the deodorization chamber 1, along the direction of the exhaust gas flow from the inlet 11 to the outlet 12, there are sequentially arranged alkaline spray demisting zone 2, biological spray demisting zone 3, oxidative spray demisting zone 4, and activated carbon deodorization zone 5. Activated carbon can be installed or left uninstalled depending on the type of exhaust gas and actual operational needs, adapting to different usage scenarios. When replacing or adding activated carbon, the existing activated carbon can be pulled out directly from the side without occupying additional space, providing more room for future upgrades. Similarly, the spray nozzles 22 of the alkaline spray demisting zone 2, biological spray demisting zone 3, and oxidative spray demisting zone 4 can be selectively opened or closed for spray treatment as needed. In this example, the alkaline spray demisting zone 2, biological spray demisting zone 3, and oxidative spray demisting zone 4 inside the deodorization chamber 1 are all open, and the activated carbon deodorization zone 5 is also provided.

[0022] refer to Figure 1 , Figure 2 and Figure 3 The integrated alkaline spray demisting zone 2, the integrated biological spray demisting zone 3, and the integrated oxidative spray demisting zone 4 all adopt the same modular structure, that is, each includes a spray module and a demisting filler 6 set behind the spray module.

[0023] refer to Figure 1 , Figure 2 and Figure 3 In this example, the spray module of the integrated alkaline spray demisting zone 2 is described in detail. The spray module includes a medicine storage tank, spray nozzles 22, a delivery pump 23, and a control component (not shown in the figure) located at the top of the deodorizing chamber 1. The medicine storage tank is equipped with a dosing port. The medicine storage tank is used to store alkaline medicine. The spray nozzles 22 are located at the top of the deodorizing chamber 1, and their spray direction is downward. The spray nozzles 22 are connected to the medicine storage tank through pipes. The delivery pump is installed on the pipes to pump the medicine in the medicine storage tank to the spray nozzles 22 for atomization spraying. The control component is usually a PLC controller, which is electrically connected to the delivery pump 23 and is used to control the start and stop of the delivery pump 23.

[0024] refer to Figure 1 , Figure 2 and Figure 3 The demisting packing 6 is used to demist and dry the wet exhaust gas after spraying, ensuring that the exhaust gas entering the next treatment area is relatively dry.

[0025] refer to Figure 1 , Figure 2 and Figure 3Working process: The waste gas to be treated enters the deodorization chamber 1 through the air inlet 11. First, it enters the integrated alkaline spray and demisting zone 2: the control component starts the delivery pump 23, and the alkaline solution is sprayed downward through the spray nozzles 22 to fully contact the waste gas and remove the acidic gases. Subsequently, the waste gas passes through the demisting packing 6, where the moisture and droplets are trapped, and the waste gas becomes dry. Then, it enters the integrated biological spray demisting zone 3: the spray liquid in this zone is the supernatant (microbial liquid) from the external biochemical tank. Biological inoculation is carried out in the integrated biological spray demisting zone, and the biodegradable odorous components in the exhaust gas are absorbed and decomposed by microorganisms. After treatment, it is also dried by the demisting packing 6. Any unused microbial liquid after spraying is circulated back to the storage tank through the circulation component for reuse. The storage tank is equipped with an overflow port (not shown in the figure). The pumping component continuously delivers supernatant to the storage tank, and the supernatant reaching the overflow port flows out and returns to the biochemical tank. This structure allows for continuous addition of supernatant to the storage tank and also enables continuous water circulation spraying during spraying, thus maximizing the adsorption and degradation effect of the microorganisms. Next, it enters the integrated oxidation spray and demisting zone 4: its working principle is similar to that of the alkaline spray zone, but the storage tank contains oxidizing solutions (such as sodium hypochlorite solution) used to oxidize and decompose organic pollutants and malodorous substances in the waste gas. After treatment, it is also dried through the demisting packing 6; Finally, the gas enters the activated carbon deodorization zone 5: After the waste gas has been treated in the first three steps, the residual odor molecules are adsorbed and removed by activated carbon 51, and the finally clean gas is discharged from the outlet 12.

[0026] For the dosing ports set in the integrated alkaline spray demisting zone 2 and the integrated oxidation spray demisting zone 4, the chemical solution required for waste gas treatment can be directly added to the storage tank through the dosing port.

[0027] The dosing port of the storage tank in the integrated biological spray demisting zone 3 is connected to the biological treatment tank via a pumping component. The pumping component is used to pump the supernatant in the biological treatment tank into the storage tank in the integrated biological spray demisting zone 3. This structure allows for the use of locally sourced materials, eliminating the need to purchase external inoculants, and also ensures that multiple rapid inoculations can be performed simultaneously in the later stages.

[0028] refer to Figure 1 , Figure 2 and Figure 3 To facilitate the installation and maintenance of the demisting filler 6, a filler inlet 15 is provided at the top of the deodorizing chamber 1, directly above each demisting filler 6. A material removal inlet 13 is provided on the side of the deodorizing chamber 1 for removing the demisting filler 6. During installation, the demisting filler 6 is inserted through the filler inlet 15; when replacement or cleaning is required, it is removed through the material removal inlet 13 on the side, achieving "top placement and side removal," making operation extremely convenient.

[0029] refer to Figure 1 , Figure 2 and Figure 3 The deodorization device also includes a water replenishment component 7. The water replenishment component 7 includes a water replenishment pipe 71 connected at one end to the medicine storage tank, a control valve 72 installed on each water replenishment pipe 71, and a liquid level detector installed in the medicine storage tank: the liquid level detector and the control valve 72 are both connected to the control component via signal connection.

[0030] refer to Figure 1 , Figure 2 and Figure 3 During operation, when the liquid level of any medicine or biological liquid in any storage tank is lower than the set lower limit, the liquid level detector will send a signal to the control component. The control component will then open the corresponding control valve 72 to add water to the storage tank until the liquid level reaches the upper limit and then close the control valve 72.

[0031] refer to Figure 1 , Figure 2 and Figure 3 A pH detector 24 is installed in the exhaust gas channel of the integrated alkaline spray demisting zone 2. The signal output terminal of the pH detector 24 is connected to the control component. The control component has a preset target pH range for the exhaust gas; the pH value deviates from the set range by 9.0-10.5. When the pH detector 24 detects that the pH value of the exhaust gas deviates from the set range, the control component will automatically control the delivery pump 23 to stop working. At this time, alkaline solution is added to the storage tank through the dosing port in time to maintain the best treatment effect. Similarly, an ORP detector 44 is installed in the exhaust gas channel of the integrated oxidation spray demisting zone 4. The ORP detector 44 is used to detect the oxidation-reduction potential of the exhaust gas. The control component determines whether the ORP value is within the set range. The ORP value set range is 300mV-500mV. When the ORP value deviates from the set range, the delivery pump stops working. At this time, oxidant is added to the storage tank through the dosing port in time to ensure oxidation efficiency.

[0032] refer to Figure 1 , Figure 2 and Figure 3 In addition, drain outlets 14 are provided at the bottom of the integrated alkaline spray demisting zone 2, the integrated biological spray demisting zone 3, and the integrated oxidative spray demisting zone 4. When it is necessary to replace the spray liquid or remove accumulated water, the drain outlets 14 can be opened to drain the liquid. Especially in the biological spraying zone, the continuous water circulation helps to maintain the activity and stability of the biological community, eliminating the need for frequent secondary inoculation of microorganisms.

[0033] In summary, this deodorization device improves the treatment quality of waste gas through multi-stage processing. Furthermore, it highly integrates multiple different types of spray zones, spray modules, and demisting modules within the deodorization housing 1, resulting in a compact structure, smaller footprint, a smoother appearance without protruding parts, high volumetric load, and simple operation. It allows for rapid installation and commissioning, making it ideal for wastewater and waste gas treatment systems with limited space. By minimizing the footprint, the device integrates a high-chemical-reaction environment in both space and time, enhancing the system's spray deodorization efficiency.

[0034] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the protection scope of this utility model.

Claims

1. A horizontal spray deodorization device for treating waste gas, characterized in that, The deodorizing chamber (1) includes an air inlet (11) and an air outlet (12). The deodorizing chamber (1) is provided with an alkaline spray demisting integrated zone (2), a biological spray demisting integrated zone (3) and an oxidation spray demisting integrated zone (4) in sequence along the direction of exhaust gas flow. The integrated biological spray demisting zone (3) is connected to the external biochemical tank through a pumping component. The pumping component is used to pump the supernatant in the biochemical tank into the integrated biological spray demisting zone (3) and spray it to react with the exhaust gas.

2. The horizontal spray deodorization device for waste gas treatment according to claim 1, characterized in that, An activated carbon deodorization zone (5) is also provided inside the deodorization box (1) and between the oxidation spray demisting integrated zone (4) and the air outlet (12).

3. The horizontal spray deodorization device for waste gas treatment according to claim 1, characterized in that, The integrated alkaline spray demisting zone (2), the integrated biological spray demisting zone (3), and the integrated oxidative spray demisting zone (4) all include, along the air intake direction: The spray module includes a medicine storage tank inside the deodorizing box (1), a spray nozzle (22) at the top inside the deodorizing box (1), a delivery pump (23) for pumping the medicine in the medicine storage tank to the spray nozzle (22), and a control component. The control component is used to control the start and stop of the delivery pump (23). The medicine storage tank is provided with a medicine addition port. Demisting filler (6), the demisting filler (6) is used to demistate and keep the gas dry after spraying.

4. The horizontal spray deodorization device for waste gas treatment according to claim 3, characterized in that, The top of the deodorizing box (1) and the position corresponding to each of the demisting fillers (6) are provided with filler inlets (15), and the side of the deodorizing box (1) and the position corresponding to each of the demisting fillers (6) are provided with material outlets (13).

5. The horizontal spray deodorization device for waste gas treatment according to claim 4, characterized in that, It also includes a water replenishment component (7) for automatically adding water to each of the medicine storage tanks. The water replenishment component (7) includes a water replenishment pipe (71) for replenishing water to each of the medicine storage tanks, a control valve (72) installed on each of the water replenishment pipes (71), and a liquid level detector installed in each of the medicine storage tanks. The liquid level detector and the control valve (72) are both signal connected to the control component.

6. The horizontal spray deodorization device for treating waste gas according to any one of claims 3-5, characterized in that, A pH detector (24) is installed in the alkaline spray demisting integrated area (2). The signal output terminal of the pH detector (24) is connected to the signal receiving terminal of the control component. The pH detector (24) is used to detect whether the pH value of the exhaust gas is within the set range, thereby controlling the start and stop of the delivery pump (23).

7. The horizontal spray deodorization device for waste gas treatment according to claim 6, characterized in that, An ORP detector (44) is provided in the integrated oxidation spray demisting zone (4). The signal output terminal of the ORP detector (44) is connected to the signal receiving terminal of the control component. The ORP detector (44) is used to detect whether the ORP value of the exhaust gas is within the set range, thereby controlling the start and stop of the corresponding delivery pump (23).

8. The horizontal spray deodorization device for waste gas treatment according to claim 1, characterized in that, The integrated spray demisting zone, the integrated biological spray demisting zone (3), and the integrated oxidation spray demisting zone (4) are all equipped with drainage outlets (14).

9. The horizontal spray deodorization device for waste gas treatment according to claim 6, characterized in that, The pH value is set within the range of 9.0-10.

5.

10. The horizontal spray deodorization device for waste gas treatment according to claim 7, characterized in that, The ORP value is set within the range of 300 mV - 500 mV.

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