Exhaust gas treatment device and production system

Abstract

The utility model belongs to waste gas treatment technical field provides a kind of waste gas treatment device and production system.The waste gas treatment device of the utility model includes water storage pool, and inlet, gas inlet and liquid outlet are provided on the water storage pool, the inlet is used to pass into waste gas absorption liquid into the water storage pool, the gas inlet is used to pass into waste gas into the water storage pool, and the liquid outlet is used to discharge waste gas absorption liquid after absorbing waste gas in the water storage pool.The utility model carries out processing to waste gas, it is favorable to avoid waste gas to escape to outside to cause harm to atmospheric environment and human body.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, and in particular to a waste gas treatment device and production system. Background Technology

[0002] Industrial processes easily generate various waste gases, such as toxic gases or special waste gases. Some waste gases are colorless gases with irritating odors at room temperature, are easily soluble in water, and will pollute the atmospheric environment if they are released into the air. If the human body comes into contact with them, they will burn the skin, eyes, and mucous membranes of organs such as the respiratory system.

[0003] Therefore, it is necessary to treat the waste gas through a waste gas treatment device to solve the problem of waste gas generated in the process, thereby avoiding the harm caused by the escape of waste gas. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a waste gas treatment device and production system to solve the problem of hazards caused by the escape of untreated waste gas in the prior art.

[0005] To achieve the above and other related objectives, this utility model provides a waste gas treatment device, specifically configured as follows: it includes a water storage tank, which is provided with a liquid inlet, an air inlet, and a liquid outlet. The liquid inlet is used to introduce waste gas absorption liquid into the water storage tank, the air inlet is used to introduce waste gas into the water storage tank, and the liquid outlet is used to discharge the waste gas absorption liquid after absorbing waste gas from the water storage tank.

[0006] Optionally, the waste gas treatment device further includes a circulating spray mechanism, which includes a circulating pump, a circulating pipe, and a nozzle. The circulating pump is connected to the water storage tank and is used to extract waste gas absorption liquid from the water storage tank. The circulating pipe connects the circulating pump and the nozzle, and the nozzle is disposed in the water storage tank.

[0007] Optionally, the air inlet is provided with a reaction chamber extending into the water storage tank, the reaction chamber being open at one end facing the bottom of the water storage tank, and the nozzle being located inside the reaction chamber.

[0008] Optionally, the waste gas treatment device further includes an induced draft fan, which is connected to the reaction chamber; a waste gas detector is installed in the reaction chamber, which is used to detect the concentration of waste gas entering the water storage tank.

[0009] Optionally, the water storage tank is equipped with a pH meter and a concentration meter. The pH meter is used to detect the pH value of the waste gas absorption liquid, and the concentration meter is used to detect the concentration values ​​of the waste gas absorption liquid and the products of the waste gas in the waste gas absorption liquid.

[0010] Optionally, the top of the water storage tank is provided with an exhaust port, and the exhaust port is connected in sequence to an exhaust gas filter and a gas monitor through a pipeline. The end of the gas monitor away from the exhaust gas filter is connected to an exhaust pipeline and a circulation pipeline, and the circulation pipeline is connected to the air inlet.

[0011] Optionally, an overflow port is provided on the side wall of the water storage tank, and the height of the liquid inlet is greater than the height of the overflow port; the overflow port is connected to an overflow pool through a pipeline, and the overflow pool is connected to the water storage tank through a pipeline.

[0012] Optionally, a level gauge is installed in the water storage tank, and a warning light is installed on the outer wall of the water storage tank. The level gauge is electrically connected to the warning light.

[0013] Optionally, the water storage tank is also provided with an inspection port, which is located at the top of the water storage tank.

[0014] This utility model also provides a production system, including a first production line for generating waste gas absorption liquid, a second production line for generating waste gas, and a waste gas treatment device as described in any of the above claims, wherein the first production line is connected to the liquid inlet and the second production line is connected to the air inlet.

[0015] As described above, the waste gas treatment device and production system of this utility model have the following beneficial effects:

[0016] By injecting waste gas absorption liquid and waste gas into the storage tank, the waste gas absorption liquid and waste gas come into full contact in the storage tank. During the contact process, the waste gas dissolves into the waste gas absorption liquid, thereby achieving the effect of treating the waste gas. This helps to prevent the waste gas from escaping to the outside world and causing harm to the atmospheric environment and human health. Moreover, the waste gas absorption liquid, after absorbing the waste gas, is discharged into the storage tank through the drain outlet, which helps to ensure that the waste gas absorption liquid can continuously absorb waste gas. Attached Figure Description

[0017] Figure 1 The diagram shown is a structural schematic of the waste gas treatment device according to an embodiment of this utility model.

[0018] Explanation of reference numerals in the attached figures

[0019] 1-Water storage tank; 11-Liquid inlet; 12-Air inlet; 13-Liquid outlet; 14-Air outlet; 15-Overflow outlet;

[0020] 2-pH meter;

[0021] 3-Concentration detector;

[0022] 4-Circulating spray mechanism; 41-Circulating pump; 42-Circulating pipe; 43-Sprinkler head;

[0023] 5-Reaction chamber; 51-Exhaust fan; 52-Exhaust gas detector;

[0024] 6-Exhaust gas filter; 61-Gas monitor;

[0025] 7- Overflow pool;

[0026] 8-Level gauge;

[0027] 9-Inspection port. Detailed Implementation

[0028] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0029] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model. Therefore, the illustrations only show components relevant to this utility model and are not drawn according to the actual number, shape, and size of the components in implementation. In actual implementation, the shape, quantity, and proportion of each component can be arbitrarily changed, and the component layout may be more complex. The structures, proportions, and sizes shown in the accompanying drawings are only for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effects and objectives of this utility model, should still fall within the scope of the technical content disclosed in this utility model. Furthermore, terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of implementation of this utility model.

[0030] Before describing the embodiments of this utility model in detail, the application environment of this utility model will be described first. The waste gas treatment device of this utility model is mainly used for treating acidic or alkaline waste gases. Acidic gases can be treated with alkaline solutions, and alkaline gases can be treated with acidic solutions. Through the principle of acid-base neutralization reaction, the acidic or alkaline components in the waste gas are effectively removed, generating salt and water.

[0031] like Figure 1As shown in the figure, some embodiments of this utility model provide a waste gas treatment device, including a water storage tank 1. The water storage tank 1 has a liquid inlet 11, an air inlet 12, and a liquid outlet 13. The liquid inlet 11 is connected to a storage tank containing waste gas absorbent liquid via a pipeline to introduce the waste gas absorbent liquid into the water storage tank 1. The air inlet 12 is connected to a waste gas delivery pipeline to introduce waste gas into the water storage tank 1, allowing the waste gas absorbent liquid and waste gas to fully contact each other within the water storage tank 1. During the contact process, the waste gas reacts with the waste gas absorbent liquid and dissolves into it, thereby treating the waste gas and preventing it from escaping to the outside environment and causing harm to the atmosphere and human health. The liquid outlet 13 is used to discharge the waste gas absorbent liquid from the water storage tank 1 after absorbing waste gas, ensuring that the waste gas absorbent liquid in the water storage tank 1 can continuously absorb waste gas and maintaining the efficiency of waste gas absorption.

[0032] In one example, the air inlet 12 is located at the top of the water storage tank 1, the liquid inlet 11 is located on the upper side wall of the water storage tank 1, and the liquid outlet 13 is located on the lower side wall of the water storage tank 1.

[0033] It should be noted that, in order to avoid secondary pollution caused by the waste gas absorption liquid after absorbing the waste gas, the drain outlet 13 is connected to a wastewater treatment tank through a pipeline. This wastewater treatment tank is used to treat the waste gas absorption liquid after absorbing the waste gas.

[0034] For example, when the waste gas is acidic, the waste gas can be nitrogen dioxide and the waste gas absorbent can be sodium hydroxide; or the waste gas can be hydrogen chloride and the waste gas absorbent can be sodium hydroxide; or other. When the waste gas is alkaline, the waste gas can be ammonia and the waste gas absorbent can be sulfuric acid solution; or the waste gas can be hydrazine and the waste gas absorbent can be hydrochloric acid solution; or other.

[0035] In some embodiments, in order to ensure that the waste gas absorption liquid in the water storage tank 1 can continuously absorb waste gas, a pH meter 2 and a concentration meter 3 are installed in the water storage tank 1. The pH meter 2 is used to detect the pH value of the waste gas absorption liquid, and the concentration meter 3 is used to detect the concentration value of the products generated after the waste gas absorption liquid and waste gas react in the waste gas absorption liquid.

[0036] If the pH meter 2 detects that the pH value of the waste gas absorption liquid is higher or lower than the preset pH range, the drain outlet 13 discharges the waste gas absorption liquid after absorbing the waste gas in the water storage tank 1, and the inlet 11 introduces the waste gas absorption liquid into the water storage tank 1 so that the waste gas absorption liquid in the water storage tank 1 is maintained within the preset pH range.

[0037] Alternatively, if the concentration detector 3 detects that the concentration of the product generated after the reaction between the waste gas absorption liquid and the waste gas in the waste gas absorption liquid is higher than the preset concentration range, then the drain outlet 13 discharges the waste gas absorption liquid after absorbing the waste gas from the water storage tank 1, and the inlet 11 introduces the waste gas absorption liquid into the water storage tank 1.

[0038] For example, pH meter 2 can be set as an acid-base meter. When the exhaust gas is ammonia, concentration meter 3 can be set as an online ammonia concentration detector.

[0039] In some embodiments, the waste gas treatment device further includes a circulating spray mechanism 4. The circulating spray mechanism 4 includes a circulating pump 41, a circulating pipe 42, and a nozzle 43. The circulating pump 41 is connected to a water storage tank 1 and is used to extract waste gas absorption liquid from the water storage tank 1. Both ends of the circulating pipe 42 are connected to the circulating pump 41 and the nozzle 43, respectively. The nozzle 43 is disposed within the water storage tank 1. Specifically, the inlet end of the circulating pump 41 is connected to the water storage tank 1, and the outlet end of the circulating pump 41 is connected to the inlet end of the circulating pipe 42 (the lower end of the circulating pipe 42). The outlet end of the circulating pipe 42 is connected to the inlet end of the nozzle 43 (the upper end of the circulating pipe 42). The nozzle 43 is disposed at the top center of the water storage tank 1, with its outlet end facing downwards, spraying the waste gas absorption liquid downwards. The waste gas absorption liquid in the storage tank 1 is extracted by the circulation pump 41 and sprayed out again in the storage tank 1 through the circulation pipe 42 and the nozzle 43. The cycle is repeated so that the waste gas and the waste gas absorption liquid can come into more complete contact, thereby improving the treatment effect of the waste gas.

[0040] In one example, the number of nozzles 43 is set to at least one. The specific number of nozzles 43 can be set to 1, 2, 3, etc., and can be adapted according to actual needs.

[0041] In some embodiments, a reaction chamber 5 extending into the water storage tank 1 is provided at the air inlet 12, and the nozzle 43 is located inside the reaction chamber 5. This allows the waste gas to fully contact the waste gas absorption liquid inside the reaction chamber 5 before entering the water storage tank 1 through the reaction chamber 5. This helps prevent the waste gas from directly diffusing into various parts of the water storage tank 1 after entering through the air inlet 12, thereby improving the waste gas treatment effect. Furthermore, the reaction chamber 5 is open at one end facing the bottom of the water storage tank 1, so that the waste gas absorption liquid sprayed from the nozzle 43 flows into the water storage tank 1 after fully contacting the waste gas.

[0042] In some embodiments, the exhaust gas treatment device further includes an induced draft fan 51, which connects the reaction chamber 5 to a pipe supplying exhaust gas. Exemplarily, the input end of the induced draft fan 51 is connected to the pipe supplying exhaust gas, and the output end of the induced draft fan 51 is connected to the input end of the reaction chamber 5. The induced draft fan 51 draws the exhaust gas from the pipe supplying exhaust gas into the water storage tank 1, accelerating the introduction speed of the exhaust gas. Exemplarily, the induced draft fan 51 may be installed on top of the water storage tank 1, or at other locations on the water storage tank 1, or it may not be installed on the water storage tank 1. The induced draft fan 51 can increase the speed at which exhaust gas enters the water storage tank 1, thereby increasing the exhaust gas treatment speed.

[0043] In one example, the reaction chamber 5 can exist as an exhaust duct that works in conjunction with the induced draft fan 51, and the reaction chamber 5 can be configured as a cylindrical structure, etc. Under the action of the induced draft fan 51, the exhaust gas moves downward in the reaction chamber 5 and comes into full contact with the exhaust gas absorption liquid sprayed from the nozzle 43 in the reaction chamber 5, so that the exhaust gas absorption liquid absorbs the exhaust gas.

[0044] In some embodiments, an exhaust gas detector 52 is installed inside the reaction chamber 5. The exhaust gas detector 52 can be located at the input end of the reaction chamber 5 and is used to detect the concentration of exhaust gas entering the water storage tank 1. The concentration of exhaust gas detected by the exhaust gas detector 52 can be used to adjust the flow rate of the exhaust gas absorption liquid sprayed from the nozzle 43, the number of nozzles 43, and the power of the induced draft fan 51, etc.

[0045] For example, the exhaust gas detector 52 can be configured as a flow concentration meter.

[0046] In some embodiments, to maintain the internal pressure of the water storage tank 1 at normal levels, an exhaust port 14 is provided at the top of the water storage tank 1. This exhaust port 14 can be used to discharge waste gas that has not reacted with the waste gas absorption liquid, or to discharge gas generated within the water storage tank 1. To prevent waste gas from overflowing to the outside, the exhaust port 14 is connected in sequence to a waste gas filter 6 and a gas monitor 61 via pipes. The end of the gas monitor 61 furthest from the waste gas filter 6 is connected to an exhaust pipe and a circulation pipe, wherein the circulation pipe is connected to the air inlet 12. If the gas monitor 61 detects that the filtered waste gas does not meet emission requirements, the waste gas is discharged to the air inlet 12 through the circulation pipe; if the gas monitor 61 detects that the filtered waste gas meets emission requirements, the waste gas is discharged to the outside through the exhaust pipe.

[0047] For example, the exhaust gas filter 6 may include, but is not limited to, an activated carbon filter box.

[0048] In one example, a pressure sensor is installed inside the water storage tank 1 to detect the pressure value inside the tank. When the pressure sensor detects that the pressure value inside the water storage tank 1 is higher than atmospheric pressure, the air inlet 12 is closed, such as turning off the induced draft fan 51 to stop the flow of exhaust gas into the water storage tank 1, and the exhaust port 14 is opened to release pressure from the water storage tank 1. When the pressure sensor detects that the pressure value inside the water storage tank 1 is at atmospheric pressure, the air inlet 12 is opened and the exhaust port 14 is closed.

[0049] In one example, a temperature sensor is installed inside the water storage tank 1 to detect the internal temperature. Although some heat is generated during the reaction between the waste gas and the waste gas absorption liquid, the water storage tank 1 is usually kept at room temperature because a constant supply of ambient-temperature waste gas absorption liquid is added to it. If the temperature sensor detects an abnormal temperature in the water storage tank 1, such as exceeding 50°C, cooling measures are taken, such as draining the waste gas absorption liquid from the water storage tank 1 after absorbing the waste gas through the drain port 13, and introducing waste gas absorption liquid into the water storage tank 1 through the inlet port 11.

[0050] In some embodiments, an overflow port 15 is provided on the side wall of the water storage tank 1, and the opening height of the liquid inlet 11 is greater than the height of the overflow port 15. Exemplarily, the liquid inlet 11 and the overflow port 15 are arranged vertically on the same straight line. When the liquid level of the waste gas absorption liquid in the water storage tank 1 is higher than the overflow port 15, the waste gas absorption liquid will be discharged from the water storage tank 1 through the overflow port 15 to avoid safety accidents. The height of the overflow port 15 is the safe height of the waste gas absorption liquid in the water storage tank 1.

[0051] Furthermore, an overflow tank 7 is connected externally via a pipeline, and this overflow tank 7 is connected to the water storage tank 1 via a pipeline to allow for the re-introduction of waste gas absorption liquid into the water storage tank 1. For example, when it is necessary to introduce waste gas absorption liquid into the water storage tank 1, the waste gas absorption liquid in the overflow tank 7 can be preferentially introduced. It should be noted that a valve controlling the on / off state of the pipeline is installed on the pipeline connecting the overflow tank 7 and the water storage tank 1.

[0052] For example, both the pressure sensor and the temperature sensor are located above the overflow port 15.

[0053] In some embodiments, a level gauge 8 is installed in the water storage tank 1, and a warning light is installed on the outer top wall of the water storage tank 1. The level gauge 8 is electrically connected to the warning light. Exemplarily, a protective layer is applied to the outer wall of the level gauge 8 to prevent corrosion of the level gauge 8 casing by the waste gas absorption liquid. The preset alarm height of the level gauge 8 in the water storage tank 1 is lower than the height of the overflow port 15. When the height of the waste gas absorption liquid reaches the preset alarm height of the level gauge 8, an alarm is triggered. If no operator intervenes at this time, the waste gas absorption liquid can still be discharged through the overflow port 15. When the level of the waste gas absorption liquid reaches the preset alarm height of the level gauge 8, the warning light is activated to remind the operator to close the inlet 11 and prevent further flow of waste gas absorption liquid into the water storage tank 1.

[0054] For example, both pH meter 2 and concentration meter 3 are installed below level gauge 8, and both pH meter 2 and concentration meter 3 are covered with a protective layer to prevent the outer shell of level gauge 8 from being corroded by waste gas absorption liquid.

[0055] In some embodiments, the water storage tank 1 is further provided with an inspection port 9, which is located at the top of the water storage tank 1. Exemplarily, the inspection port 9 is circular, and its diameter is large enough to allow operators to easily enter the water storage tank 1 for maintenance. An opening and closing door is installed inside the inspection port 9, which facilitates future maintenance of the water storage tank 1 and also avoids safety risks during the operation of the water storage tank 1.

[0056] In summary, the waste gas treatment device provided by this utility model injects waste gas absorption liquid and waste gas into a water storage tank, allowing the waste gas absorption liquid and waste gas to come into full contact within the water storage tank. During the contact process, the waste gas dissolves into the waste gas absorption liquid, thereby achieving the effect of treating the waste gas and helping to prevent the waste gas from escaping to the outside world and causing harm to the atmospheric environment and human health. Furthermore, the waste gas absorption liquid, after absorbing the waste gas, is discharged into the water storage tank through a drain outlet, which helps to ensure that the waste gas absorption liquid continuously absorbs waste gas.

[0057] Some embodiments of this utility model also provide a production system, including a first production line for generating waste gas absorption liquid, a second production line for generating waste gas, and a waste gas treatment device as described in the above embodiments. The first production line is connected to the liquid inlet 11, and the second production line is connected to the air inlet 12. Valves for blocking the first and second production lines are respectively provided on the first and second production lines.

[0058] The production system directly connects the first production line, which generates waste gas absorbent liquid, and the second production line, which generates waste gas, to the waste gas treatment device. It utilizes the waste gas absorbent liquid generated by the first production line instead of the expensive absorbent solution to treat the waste gas generated by the second production line, significantly reducing waste gas treatment costs. The overall structure of the production system is simple and easy to operate.

[0059] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A waste gas treatment device, characterized in that, include: Water storage tank; An inlet is provided on the water storage tank for introducing waste gas absorption liquid into the water storage tank. An air inlet is provided on the water storage tank for introducing waste gas into the water storage tank. A drain outlet is provided on the water storage tank for discharging the waste gas absorption liquid after absorbing waste gas in the water storage tank. A circulating spraying mechanism includes a circulating pump, a circulating pipe, and spray nozzles. The circulating pump is connected to the water storage tank and is used to extract waste gas absorption liquid from the water storage tank. The circulating pipe connects the circulating pump and the spray nozzles, and the spray nozzles are disposed within the water storage tank. The water storage tank is equipped with a pH meter and a concentration meter. The pH meter is used to detect the pH value of the waste gas absorption liquid, and the concentration meter is used to detect the concentration values ​​of the waste gas absorption liquid and the waste gas products in the waste gas absorption liquid.

2. The waste gas treatment device according to claim 1, characterized in that: A reaction chamber extending into the water storage tank is provided at the air inlet. The reaction chamber is open at one end facing the bottom of the water storage tank, and the nozzle is located inside the reaction chamber.

3. The waste gas treatment device according to claim 2, characterized in that: The waste gas treatment device also includes an induced draft fan, which is connected to the reaction chamber; a waste gas detector is installed in the reaction chamber, which is used to detect the concentration of waste gas entering the water storage tank.

4. The waste gas treatment device according to claim 1, characterized in that: The top of the water storage tank is provided with an exhaust port, which is connected in sequence to an exhaust gas filter and a gas monitor via a pipeline. The end of the gas monitor away from the exhaust gas filter is connected to an exhaust pipeline and a circulation pipeline, and the circulation pipeline is connected to the air inlet.

5. The waste gas treatment device according to any one of claims 1-4, characterized in that: An overflow outlet is provided on the side wall of the water storage tank, and the height of the inlet is greater than the height of the overflow outlet; the overflow outlet is connected to an overflow pool through a pipeline, and the overflow pool is connected to the water storage tank through a pipeline.

6. The waste gas treatment device according to claim 1, characterized in that: The water storage tank is equipped with a level gauge, and a warning light is installed on the outer wall of the water storage tank. The level gauge is electrically connected to the warning light.

7. The waste gas treatment device according to claim 1, characterized in that: The water storage tank is also equipped with an inspection port, which is located at the top of the water storage tank.

8. A production system, characterized in that: The device includes a first production line that generates waste gas absorbent liquid, a second production line that generates waste gas, and a waste gas treatment apparatus as described in any one of claims 1 to 7, wherein the first production line is connected to the liquid inlet and the second production line is connected to the air inlet.

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