Reaction kettle waste gas collecting and filtering mechanism

Abstract

The utility model discloses a reaction kettle waste gas collecting and filtering mechanism which comprises a spraying unit and a liquid storage unit, the spraying unit comprises a spraying tank, spraying filler, an atomizing nozzle, a gas inlet pipe and a gas exhaust pipe, the gas inlet pipe is installed on the side face of the spraying tank, the gas exhaust pipe is installed at the top end of the spraying tank, and the liquid storage unit is installed on the spraying tank. The air inlet pipe and the exhaust pipe are both communicated with the spraying tank, the spraying filler and the atomizing nozzle are arranged in the spraying tank, the atomizing nozzle is arranged above the spraying filler, the liquid storage unit comprises a liquid storage tank, a liquid conveying pump and a liquid outlet pipe, and the liquid conveying pump is communicated with the liquid storage tank. The liquid conveying pump is installed at the top end of the liquid storage tank and connected with the liquid storage tank, one end of the liquid outlet pipe is connected with the liquid conveying pump, the other end of the liquid outlet pipe is connected with the atomization sprayer, the waste gas collecting and filtering mechanism of the reaction kettle can detect the quality of exhausted gas, and the situation that the quality of the exhausted gas after treatment is still lower than the emission standard is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to a waste gas collecting and filtering mechanism for a reactor. Background Art

[0002] Water reducer is a concrete admixture that can reduce the amount of mixing water while maintaining the slump of concrete. It includes lignin sulfonate, naphthalene sulfonate formaldehyde polymer, etc., which are polymerized from a variety of raw materials. During heating, melting, hydrolysis, polymerization and other reactions, different waste gases will be emitted. The waste gas contains harmful substances or dust in the raw materials, which needs to be treated before discharge.

[0003] In the prior art, waste gas recovery devices are mostly used to treat the waste gas after the reaction, and then the treated gas is discharged. However, since the existing waste gas recovery devices mostly use the method of spraying alkaline solutions to neutralize the acidic substances in the waste gas to remove the acidity, the production process of the water reducer has different polymer concentrations in the discharged waste gas due to different production processes. If a high-concentration alkaline solution is used for neutralization treatment, it is easy to cause waste. Moreover, since the waste gas is treated by spraying, some pollutants in the waste gas may not be fully reacted, and the discharged waste gas lacks further testing, it is inevitable that the quality of the treated exhaust gas is still lower than the emission standard. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a reactor exhaust gas collection and filtering mechanism that can detect the exhaust gas quality and avoid the situation where the exhaust gas quality after treatment is still lower than the emission standard.

[0005] The purpose of this utility model adopts the following technical solutions:

[0006] A reactor waste gas collection and filtering mechanism, comprising:

[0007] A spray unit, comprising a spray tank, a spray filler, an atomizing nozzle, an air inlet pipe, and an exhaust pipe, wherein the air inlet pipe is mounted on the side of the spray tank, the exhaust pipe is mounted on the top of the spray tank, and both the air inlet pipe and the exhaust pipe are connected to the spray tank. The spray filler and the atomizing nozzle are disposed in the spray tank, and the atomizing nozzle is disposed above the spray filler;

[0008] A liquid storage unit, comprising a liquid storage tank, an infusion pump, and a liquid outlet pipe. The infusion pump is mounted on the top of the liquid storage tank and connected to the liquid storage tank. One end of the liquid outlet pipe is connected to the infusion pump, and the other end is connected to the atomizing nozzle.

[0009] a detection unit, the detection unit comprising an air quality detection sensor, a return pipe, and an air pump, the air quality detection sensor being mounted on the exhaust pipe to detect the quality of air discharged from the exhaust pipe, one end of the return pipe being connected to the top of the spray tank, and the other end being connected to the intake pipe, the air pump being mounted on the return pipe and being in communication with the air quality detection sensor;

[0010] The sealing unit includes a first solenoid valve installed in the exhaust pipe and communicatively connected to the air quality detection sensor.

[0011] Furthermore, it also includes a mixing unit, which includes an exhaust gas inlet pipe, a mixing tank, a mixing element and a drive motor. The mixing element is arranged in the mixing tank, and the exhaust gas inlet pipe and the drive motor are both arranged at the top of the mixing tank. The exhaust gas inlet pipe is connected to the mixing tank, the driving end of the drive motor is connected to the mixing element, and the air inlet pipe is connected to the mixing tank at one end away from the spray tank.

[0012] Furthermore, it also includes a gas filter box, which is installed on the side of the mixing tank, and the end of the exhaust gas inlet pipe away from the mixing tank is connected to the gas filter box, a first filter is installed in the gas filter box, and an exhaust gas inlet is provided on the side of the gas filter box.

[0013] Furthermore, it also includes a liquid filter box, a recovery pipe connecting the liquid filter box and the spray tank, a drainage pipe connecting the liquid filter box and the liquid storage tank, and a drainage pump installed on the drainage pipe. A second filter screen is integrated in the liquid filter box.

[0014] Furthermore, the mesh number of the second filter is greater than the mesh number of the first filter.

[0015] Furthermore, the mixing element includes a stirring rod connected to the driving end of the driving motor and a plurality of stirring blades spaced apart along the axial direction of the stirring rod.

[0016] Furthermore, the liquid outlet pipe is wound around the exhaust pipe.

[0017] Furthermore, the sealing unit also includes a second solenoid valve installed at both ends of the return pipe.

[0018] Beneficial effects:

[0019] The utility model installs an air quality detection sensor on the exhaust pipe to detect the quality of the exhaust gas discharged from the exhaust pipe, and cooperates with the first solenoid valve, air pump and return pipe to control the first solenoid valve to close the exhaust pipe when the quality of the exhaust gas does not meet the emission standards, and then uses the air pump and the return pipe to pump the treated exhaust gas into the intake pipe again, so that it can flow back to the spray tank for spraying treatment, so as to effectively remove the pollutants remaining in the exhaust gas and make it meet the emission standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of a reactor exhaust gas collection and filtering mechanism of the utility model;

[0021] Figure 2 This is a structural diagram of a mixing tank for collecting and filtering the waste gas from a reactor according to the present invention;

[0022] Figure 3 This is a structural diagram of a spray tank for collecting and filtering the waste gas from a reactor according to the present invention; Figure numerals:

[0023] 10. Mixing unit; 101. Waste gas inlet pipe; 102. Mixing tank; 103. Mixing element; 104. Drive motor; 20. Spray unit; 201. Spray tank; 202. Spray filler; 203. Atomizing nozzle; 204. Air inlet pipe; 205. Exhaust pipe; 30. Liquid storage unit; 301. Liquid storage tank; 302. Liquid outlet pipe; 40. Detection unit; 401. Reflux pipe; 402. Air pump; 50. Sealing unit; 501. First solenoid valve; 502. Second solenoid valve; 60. Gas filter box; 601. First filter; 70. Liquid filter box; 701. Recovery pipe; 702. Drain pipe; 703. Drain pump; 704. Second filter. DETAILED DESCRIPTION

[0024] Below, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0025] In the description of the present invention, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0027] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0028] like Figure 1-3 As shown, a reactor exhaust gas collection and filtering mechanism includes:

[0029] The spray unit 20 includes a spray tank 201, a spray filler 202, an atomizing nozzle 203, an air inlet pipe 204, and an exhaust pipe 205. The air inlet pipe 204 is installed on the side of the spray tank 201, and the exhaust pipe 205 is installed on the top of the spray tank 201. The air inlet pipe 204 and the exhaust pipe 205 are both connected to the spray tank 201. The spray filler 202 and the atomizing nozzle 203 are arranged in the spray tank 201, and the atomizing nozzle 203 is arranged above the spray filler 202.

[0030] The liquid storage unit 30 includes a liquid storage tank 301, an infusion pump, and a liquid outlet tube 302. The infusion pump is installed on the top of the liquid storage tank 301 and is connected to the liquid storage tank 301. One end of the liquid outlet tube 302 is connected to the infusion pump, and the other end is connected to the atomizing nozzle 203.

[0031] Detection unit 40, which includes an air quality detection sensor, a return pipe 401, and an air pump 402. The air quality detection sensor is installed in the exhaust pipe 205 to detect the quality of the air discharged from the exhaust pipe 205. One end of the return pipe 401 is connected to the top of the spray tank 201, and the other end is connected to the intake pipe 204. The air pump 402 is installed in the return pipe 401 and is in communication with the air quality detection sensor.

[0032] The sealing unit 50 includes a first solenoid valve 501 . The first solenoid valve 501 is installed in the exhaust pipe 205 . The first solenoid valve 501 is communicatively connected to the air quality detection sensor.

[0033] When using the present invention, the exhaust gas is passed into the spray tank 201 through the air inlet pipe 204, and the infusion pump is started at the same time to pump the alkaline solution in the liquid storage tank 301 into the atomizing nozzle 203. The atomizing nozzle 203 atomizes the alkaline solution and sprays it into the spray tank 201. The atomized alkaline solution can increase its contact area with the exhaust gas, thereby improving the neutralization effect of the alkaline solution and the harmful substances in the exhaust gas. After being treated with the alkaline solution, the exhaust gas is discharged through the exhaust pipe 205 arranged above the spray tank 201. In the process of the exhaust gas being discharged through the exhaust pipe 205, the quality detection sensor is controlled to detect the quality of the exhaust gas, and when the quality of the discharged exhaust gas does not meet the discharge standard, the first solenoid valve 501 is controlled to close the exhaust pipe 205. The air pump 402 is started at the same time to pump the waste gas 402 treated with the alkaline solution into the reflux pipe 401, and flow back to the intake pipe 204 through the reflux pipe 401, and enter the spray pipe again through the intake pipe 204 for secondary spraying to further remove harmful substances in the exhaust gas. In this embodiment, the detection end of the quality detection sensor is arranged in the exhaust pipe 205 and is located below the first solenoid valve 501. Therefore, after the first solenoid valve 501 closes the exhaust pipe 205, the air quality detection sensor can still detect the quality of the exhaust gas in the exhaust pipe 205. Until the quality of the exhaust gas entering the exhaust pipe 205 meets the emission standards, the first solenoid valve 501 is opened and the air pump 402 is closed to discharge the treated exhaust gas into the air.

[0034] The utility model installs an air quality detection sensor on the exhaust pipe 205 to detect the quality of the exhaust gas discharged from the exhaust pipe 205, and cooperates with the first solenoid valve 501, the air pump 402 and the return pipe 401 to control the first solenoid valve 501 to close the exhaust pipe 205 when the quality of the exhaust gas does not meet the emission standards, and then uses the air pump 402 and the return pipe 401 to pump the treated exhaust gas into the intake pipe 204 again, so that it can flow back to the spray tank 201 for spraying treatment, so as to effectively remove residual pollutants in the exhaust gas and make it meet the emission standards.

[0035] Preferably, the present embodiment further includes a mixing unit 10, which includes an exhaust gas inlet pipe 101, a mixing tank 102, a mixing element 103 and a drive motor 104. The mixing element 103 is arranged in the mixing tank 102, and the exhaust gas inlet pipe 101 and the drive motor 104 are both arranged at the top of the mixing tank 102. The exhaust gas inlet pipe 101 is connected to the mixing tank 102, the drive end of the drive motor 104 is connected to the mixing element 103, and the end of the air inlet pipe 204 away from the spray tank 201 is connected to the mixing tank 102.

[0036] During operation, various waste gases enter the mixing tank 102 through the waste gas inlet pipe 101, and the driving motor 104 drives the stirring element to rotate so that the various waste gases in the mixing tank 102 are evenly mixed, and enter the spray tank 201 through the air intake tank for treatment. Since the waste gas inlet pipe 101 is arranged at the top of the mixing tank 102, after the waste gas passes into the mixing tank 102, its movement trajectory is perpendicular to the rotation direction of the stirring blade, so that the waste gas can be dispersed and mixed evenly by the stirring blade when entering the mixing tank 102.

[0037] In addition, after the alkaline solution comes into contact with the exhaust gas, the particulate matter therein will fall onto the filler after absorbing moisture. After working for a long time, the particulate matter is likely to clog the gaps on the filler. Therefore, in order to avoid the filler being clogged, a gas filter box 60 is also included in this embodiment. The gas filter box 60 is installed on the side of the mixing tank 102, and the end of the exhaust gas inlet pipe 101 away from the mixing tank 102 is connected to the gas filter box 60. A first filter screen 601 is installed in the gas filter box 60, and an exhaust gas inlet is provided on the side of the gas filter box 60.

[0038] Specifically, the mixing element 103 includes a stirring rod connected to the driving end of the driving motor 104 and a plurality of stirring blades spaced apart along the axial direction of the stirring rod. The plurality of stirring blades can effectively improve the mixing effect of the gas.

[0039] Furthermore, in order to make full use of the alkaline solution and reduce costs, the present embodiment further includes a liquid filter box 70, a recovery pipe 701 connecting the liquid filter box 70 and the spray tank 201, a drainage pipe 702 connecting the liquid filter box 70 and the liquid storage tank 301, and a drainage pump 703 installed on the drainage pipe 702. A second filter screen 704 is integrated in the liquid filter box 70. During operation, the alkaline solution falling to the bottom of the spray tank 201 will flow into the liquid filter box 70 through the recovery pipe 701 and be allowed to stand in the liquid filter box 70 so that large particles such as dust remaining in the alkaline solution are deposited at the bottom of the liquid filter box 70. After standing for a period of time, the drainage pump 703 pumps the alkaline solution in the liquid filter box 70 into the liquid storage tank 301. The provided second filter screen 704 can effectively prevent the drainage pump 703 from pumping large particles such as dust remaining in the alkaline solution into the liquid storage tank 301.

[0040] In order to improve the filtering effect, in this embodiment, the mesh number of the second filter 704 is greater than the mesh number of the first filter 601.

[0041] Furthermore, during the production process, the temperature of the polycarboxylate superplasticizer (PCA) agent rises to 80°C during reaction, resulting in a relatively high temperature of the exhaust gas. Furthermore, since production plants are often relatively enclosed spaces, this exhaust gas can cause the temperature inside the plant to rise, affecting the normal work of workers. Therefore, in this embodiment, the liquid outlet pipe 302 is wound around the exhaust pipe 205. This allows the alkaline solution to be pumped into the nozzle by the infusion pump, removing heat from the exhaust gas, thereby reducing the temperature of the exhaust gas.

[0042] At the same time, since the return pipe 401 is connected to the intake pipe 204, part of the high-temperature exhaust gas will enter the return pipe 401 through the intake pipe 204, and directly flow to the top of the spray tank 201 through the return pipe 401 and be discharged through the exhaust pipe 205 without contacting and reacting with the alkaline solution. In addition, the air pump 402 is easily damaged when it is in a high-temperature environment for a long time. In order to avoid this situation, in this embodiment, the sealing unit 50 also includes a second solenoid valve 502 installed at both ends of the return pipe 401. When the exhaust gas quality meets the requirements, the second solenoid valve 502 is installed at both ends of the return pipe 401. When the exhaust gas quality does not meet the emission standards, the two second solenoid valves 502 remain closed to prevent high-temperature exhaust gas from entering the return pipe 401. When the exhaust gas quality does not meet the emission standards, the two second solenoid valves 502 are opened, the air pump 402 is started, and the exhaust gas cooled by the alkaline solution after atomization is pumped into the return pipe 401. Then, through the return pipe 401, it flows into the intake pipe 204 and then flows into the spray tank 201 again for spraying treatment. After the air quality meets the emission standards, the exhaust gas is discharged from the exhaust pipe 205.

[0043] The above content is a further detailed description of the present invention in combination with specific implementation methods. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, they can make several simple deductions or substitutions without departing from the concept of the present invention, which should be regarded as falling within the scope of protection determined by the claims submitted for the present invention.

Claims

1. A reactor exhaust gas collection and filtering mechanism, characterized by: include, A spray unit, comprising a spray tank, a spray filler, an atomizing nozzle, an air inlet pipe, and an exhaust pipe, wherein the air inlet pipe is mounted on the side of the spray tank, the exhaust pipe is mounted on the top of the spray tank, and both the air inlet pipe and the exhaust pipe are connected to the spray tank. The spray filler and the atomizing nozzle are disposed in the spray tank, and the atomizing nozzle is disposed above the spray filler; A liquid storage unit, comprising a liquid storage tank, an infusion pump, and a liquid outlet pipe. The infusion pump is mounted on the top of the liquid storage tank and connected to the liquid storage tank. One end of the liquid outlet pipe is connected to the infusion pump, and the other end is connected to the atomizing nozzle. a detection unit, the detection unit comprising an air quality detection sensor, a return pipe, and an air pump, the air quality detection sensor being mounted on the exhaust pipe to detect the quality of air discharged from the exhaust pipe, one end of the return pipe being connected to the top of the spray tank, and the other end being connected to the intake pipe, the air pump being mounted on the return pipe and being in communication with the air quality detection sensor; The sealing unit includes a first solenoid valve installed in the exhaust pipe and communicatively connected to the air quality detection sensor.

2. The reactor exhaust gas collection and filtering mechanism according to claim 1, characterized in that: It also includes a mixing unit, which includes an exhaust gas inlet pipe, a mixing tank, a mixing element and a drive motor. The mixing element is arranged in the mixing tank, and the exhaust gas inlet pipe and the drive motor are both arranged at the top of the mixing tank. The exhaust gas inlet pipe is connected to the mixing tank, the driving end of the drive motor is connected to the mixing element, and the air inlet pipe is connected to the mixing tank at one end away from the spray tank.

3. The reactor exhaust gas collection and filtering mechanism according to claim 2, characterized in that: It also includes a gas filter box, which is installed on the side of the mixing tank, and the end of the exhaust gas input pipe away from the mixing tank is connected to the gas filter box, a first filter is installed in the gas filter box, and an exhaust gas inlet is provided on the side of the gas filter box.

4. The reactor exhaust gas collection and filtering mechanism according to claim 3, characterized in that: It also includes a liquid filter box, a recovery pipe connecting the liquid filter box and the spray tank, a drainage pipe connecting the liquid filter box and the liquid storage tank, and a drainage pump installed on the drainage pipe. A second filter screen is integrated in the liquid filter box.

5. The reactor exhaust gas collection and filtering mechanism according to claim 4, characterized in that: The mesh number of the second filter is greater than the mesh number of the first filter.

6. The reactor exhaust gas collection and filtering mechanism according to claim 2, characterized in that: The mixing element includes a stirring rod connected to the driving end of the driving motor and a plurality of stirring blades spaced apart along the axial direction of the stirring rod.

7. The reactor exhaust gas collection and filtering mechanism according to claim 1, characterized in that: The liquid outlet pipe is wound around the exhaust pipe.

8. The reactor exhaust gas collection and filtering mechanism according to claim 1, characterized in that: The sealing unit further includes second solenoid valves installed at both ends of the return pipe.

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