Positive pressure absorption device for acetamiprid-methylamine

Abstract

The utility model relates to the technical field of pesticide production, and discloses an acetamiprid-methylamine positive pressure absorption device which comprises a reaction kettle, the upper surface of the reaction kettle is in through connection with an electromagnetic valve A, one end of the electromagnetic valve A is in through connection with an air outlet pipe A, and one end of the air outlet pipe A is fixedly connected with a flange plate. According to the positive pressure absorption device for acetamiprid-methylamine, through the arrangement of the controller and the pressure control assembly, when the device is used, firstly, gas containing methylamine generated by the reaction kettle enters the absorption tower through the gas outlet pipe A, the guide pipe, the gas inlet pipe A and the gas distributor, the pressure sensor detects the pressure value and transmits the pressure value to the controller, the controller controls the opening and closing of the back pressure valve, and the pressure control assembly controls the back pressure valve to open and close. And secondly, the infrared temperature sensor detects the temperature in the absorption tower in real time and transmits data to the controller, and the controller adjusts the heating temperature of the heating power grid, so that the pressure and the temperature in the absorption tower can be flexibly adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of pesticide production, in particular to a positive pressure absorption device for acetamiprid monomethylamide. Background Art

[0002] Acetamiprid is a key insecticide in pesticide production. Its synthesis requires monomethylamine, a key organic chemical raw material in the fatty amine class, which is widely used in pesticide production. Monomethylamine is a flammable gas at room temperature and pressure. At high concentrations or when compressed and liquefied, it has a strong ammoniacal odor and a boiling point of -6.8°C. It is a key raw material for the synthesis of the neonicotinoid pesticide acetamiprid. The gas is flammable and easily forms explosive mixtures with air. It is moderately toxic, highly irritating and corrosive. Accidental contact during production can cause acute poisoning in those exposed. It is highly irritating to the eyes, upper respiratory tract, skin, and mucous membranes, and inhalation of high concentrations can damage the lungs. Therefore, leakage of this gas must be strictly prevented during use, and it must be absorbed and then discharged to avoid harm to the human body and pollution to the environment. Therefore, a positive pressure absorption device for acetamiprid monomethylamine is needed.

[0003] Current devices have the following disadvantages:

[0004] 1. The absorption of acetamiprid monomethylamine is mostly carried out at normal pressure or negative pressure. These methods have the disadvantages of low absorption concentration of monomethylamine and low absorption efficiency.

[0005] 2. During the continuous production process, the stability and durability of the device also need to be improved.

[0006] Therefore, it is necessary to invent a positive pressure absorption device of acetamiprid monomethylamide to solve the above problems. Utility Model Content

[0007] (1) Technical problems solved

[0008] The technical problem solved by the utility model is to provide a positive pressure absorption device for acetamiprid monomethylamide which is highly practical, can be simply operated and has a relatively simple structure. It solves the problem that the absorption of acetamiprid monomethylamide proposed in the above background technology mostly adopts normal pressure or negative pressure absorption, which has the problems of low monomethylamine absorption concentration and low absorption efficiency, and the stability and durability of the device need to be improved during the continuous production process.

[0009] (2) Technical solution

[0010] To achieve the above objectives, the present invention is implemented through the following technical solutions: a positive pressure absorption device for acetamiprid monomethylamide, comprising a reactor, the upper surface of the reactor is through-connected with a solenoid valve A, one end of the solenoid valve A is through-connected with an air outlet pipe A, one end of the air outlet pipe A is fixedly connected with a flange, the surface of the flange is threadedly connected with a pressure control component, the pressure control component includes a back pressure valve, a conduit and a pressure sensor, one end of the conduit is through-connected with an auxiliary mechanism, the auxiliary mechanism includes an air inlet pipe A and a gas distributor, the surface of the conduit is through-connected with an absorption tower, a cavity is opened inside the absorption tower, a temperature control component is installed inside the cavity, the temperature control component includes a heating grid, a controller and an infrared temperature sensor, the inner wall of the absorption tower is fixedly connected with a ceramic layer, the middle part of the inner wall of the ceramic layer is fixedly connected with an absorption mechanism, the absorption mechanism includes a mounting frame and an absorption net.

[0011] As a further solution of the present invention, the back pressure valve is threadedly connected to the surface of the flange, one end of the back pressure valve is threadedly connected to a conduit, a pressure sensor is installed on the inner wall of the conduit, and one side of the back pressure valve and the pressure sensor are electrically connected to one side of the controller through a power line. The setting of the back pressure valve facilitates the control of the internal pressure of the absorption tower.

[0012] As a further solution of the present invention, the air inlet pipe A is connected to one end of the conduit, and one end of the air inlet pipe A is connected to a gas distributor. The gas distributor is located on the lower side of the interior of the absorption tower. Through the setting of the gas distributor, the contact area between the gas and the absorption liquid is increased.

[0013] As a further solution of the present invention, the heating grid is installed inside the cavity, one side of the heating grid is electrically connected to a controller through a power line, and the other side of the controller is electrically connected to an infrared temperature sensor through a power line. Through the setting of the controller, the heating temperature is controlled.

[0014] As a further solution of the present invention, the installation frame is fixedly connected to the middle of the inner wall of the ceramic layer, and three groups of absorption nets are fixedly connected to the inner wall of the installation frame. The setting of the absorption nets can absorb harmful substances in the gas.

[0015] As a further solution of the present invention, an air intake pipe B is connected to one side of the upper surface of the reactor, a pipeline valve is installed on the surface of the air intake pipe B, and four groups of supporting legs are fixedly connected to the bottom surface of the reactor. The setting of the supporting legs facilitates the support of the reactor.

[0016] As a further solution of the present invention, a solenoid valve B is installed at the top of the absorption tower, and one end of the solenoid valve B is connected to the gas outlet pipe B. One side of the solenoid valve A and the solenoid valve B are electrically connected to one end of the controller through a power line. The setting of the solenoid valve B facilitates the control of gas emissions.

[0017] (3) Beneficial effects

[0018] The utility model provides a positive pressure absorption device for acetamiprid monomethylamide, which has the following beneficial effects:

[0019] 1. The positive pressure absorption device of acetamiprid monomethylamide is equipped with a controller and a pressure control component. When the device is used, the gas containing monomethylamine produced by the reactor first enters the absorption tower through the outlet pipe A, the conduit, the inlet pipe A and the gas distributor. The pressure sensor detects the pressure value and transmits it to the controller. The controller controls the opening and closing of the back pressure valve to adjust the inlet and outlet gas, thereby controlling the air pressure. Secondly, the infrared temperature sensor detects the temperature in the absorption tower in real time and transmits the data to the controller. The controller adjusts the heating temperature of the heating grid, thereby flexibly adjusting the pressure and temperature in the absorption tower.

[0020] 2. The positive pressure absorption device of acetamiprid monomethylamine is equipped with an absorption net and auxiliary mechanisms. When the device is used, the gas containing monomethylamine first passes through the air inlet pipe A and finally enters the absorption tower from the gas distributor. The gas entering the absorption tower is absorbed by the absorption liquid and the three-layer absorption net to absorb the harmful gas monomethylamine. Finally, the controller controls the solenoid valve B to open, and the gas is discharged from the outlet pipe B, so that the harmful gas is fully absorbed. In addition, the inner wall of the absorption tower adopts a ceramic layer, which also has good corrosion resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the absorption mechanism and temperature control component of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the pressure control component of the utility model;

[0024] Figure 4 This is a schematic diagram of the auxiliary mechanism structure of the utility model.

[0025] In the figure: 1. Reactor; 2. Solenoid valve A; 3. Outlet pipe A; 4. Flange; 5. Pressure control assembly; 501. Back pressure valve; 502. Conduit; 503. Pressure sensor; 6. Auxiliary mechanism; 601. Inlet pipe A; 602. Gas distributor; 7. Absorption tower; 8. Temperature control assembly; 801. Heating grid; 802. Controller; 803. Infrared temperature sensor; 9. Ceramic layer; 10. Absorption mechanism; 1001. Mounting frame; 1002. Absorption net; 11. Inlet pipe B; 12. Pipeline valve; 13. Support leg; 14. Solenoid valve B; 15. Outlet pipe B. DETAILED DESCRIPTION

[0026] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] See also Figures 1 to 4 The utility model provides a technical solution: a positive pressure absorption device for acetamiprid monomethylamide, comprising a reactor 1, the upper surface of the reactor 1 is connected with a solenoid valve A2, one end of the solenoid valve A2 is connected with an air outlet pipe A3, one end of the air outlet pipe A3 is fixedly connected with a flange 4, the surface of the flange 4 is threadedly connected with a pressure control component 5, through the setting of the controller 802 and the pressure control component 5, the pressure and temperature in the absorption tower 7 can be flexibly adjusted, the pressure control component 5 includes a back pressure valve 501, a conduit 502 and a pressure sensor 503, one end of the conduit 502 is connected with an auxiliary mechanism 6, through the setting of the absorption net 1002 and the auxiliary mechanism 6, the harmful gas is fully absorbed, and the inner wall of the absorption tower 7 adopts a ceramic layer 9, which also has Good corrosion resistance, the auxiliary mechanism 6 includes an air inlet pipe A601 and a gas distributor 602, the surface of the conduit 502 is connected to the absorption tower 7, the interior of the absorption tower 7 is provided with a cavity, the interior of the cavity is installed with a temperature control component 8, the temperature control component 8 includes a heating grid 801, a controller 802 and an infrared temperature sensor 803, the inner wall of the absorption tower 7 is fixedly connected with a ceramic layer 9, the middle part of the inner wall of the ceramic layer 9 is fixedly connected with an absorption mechanism 10, the absorption mechanism 10 includes a mounting frame 1001 and an absorption net 1002;

[0028] See also Figure 3 The back pressure valve 501 is threadedly connected to the surface of the flange 4, one end of the back pressure valve 501 is threadedly connected to a conduit 502, and a pressure sensor 503 is installed on the inner wall of the conduit 502. One side of the back pressure valve 501 and the pressure sensor 503 are electrically connected to one side of the controller 802 through a power line. The back pressure valve 501 is provided to facilitate the control of the internal pressure of the absorption tower 7.

[0029] See also Figure 4 The air inlet pipe A601 is connected to one end of the conduit 502, and one end of the air inlet pipe A601 is connected to the gas distributor 602. The gas distributor 602 is located on the lower side of the absorption tower 7. The setting of the gas distributor 602 increases the contact area between the gas and the absorption liquid.

[0030] See also Figure 2 The heating grid 801 is installed inside the cavity. One side of the heating grid 801 is electrically connected to the controller 802 through a power line. The other side of the controller 802 is electrically connected to the infrared temperature sensor 803 through a power line. The setting of the controller 802 plays a role in controlling the heating temperature.

[0031] See also Figure 2 The mounting frame 1001 is fixedly connected to the middle of the inner wall of the ceramic layer 9. The inner wall of the mounting frame 1001 is fixedly connected with three groups of absorption nets 1002. The setting of the absorption nets 1002 plays a role in absorbing harmful substances in the gas.

[0032] See also Figure 1 An air inlet pipe B11 is connected to one side of the upper surface of the reactor 1. A pipeline valve 12 is installed on the surface of the air inlet pipe B11. Four sets of support legs 13 are fixedly connected to the bottom surface of the reactor 1. The support legs 13 are arranged to facilitate supporting the reactor 1.

[0033] See also Figure 1 A solenoid valve B14 is installed at the top of the absorption tower 7, and one end of the solenoid valve B14 is connected to the gas outlet pipe B15. The solenoid valve A2 and one side of the solenoid valve B14 are electrically connected to one end of the controller 802 through a power line. The setting of the solenoid valve B14 facilitates the control of gas emissions.

[0034] The model of the pressure sensor 503 is NS-TH18; the model of the infrared temperature sensor is TS118-3; the above parameters and models can be selected according to actual conditions.

[0035] In the present invention, the working steps of the device are as follows:

[0036] Step 1: When using the device, the gas containing monomethylamine produced by the reactor 1 first enters the absorption tower 7 through the outlet pipe A3, the conduit 502, the inlet pipe A601 and the gas distributor 602. The pressure sensor 503 detects the pressure value and transmits it to the controller 802. The controller 802 controls the opening and closing of the back pressure valve 501 to regulate the inflow and outflow of gas, thereby controlling the air pressure. Secondly, the infrared temperature sensor 803 detects the temperature in the absorption tower 7 in real time and transmits the data to the controller 802. The controller 802 adjusts the heating temperature of the heating grid 801.

[0037] The second step: When using the device, the gas containing monomethylamine first passes through the air inlet pipe A601 and finally enters the absorption tower 7 from the gas distributor 602. The gas entering the absorption tower 7 is absorbed by the absorption liquid and the three-layer absorption net 1002 to absorb the harmful gas monomethylamine. Finally, the controller 802 controls the solenoid valve B14 to open, and the gas is discharged from the outlet pipe B15.

[0038] It should be noted that the device structure and drawings of the present invention mainly describe the principle of the present invention. In terms of the technology of the design principle, the settings of the device's power mechanism, power supply system, and control system are not fully described. However, those skilled in the art can clearly understand the details of its power mechanism, power supply system, and control system on the premise that they understand the principle of the above-mentioned utility model. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be implemented by simple programming by those skilled in the art.

[0039] The standard parts used can be purchased from the market and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the components known to technical personnel in this field, their structures and principles can be known to these technical personnel through technical manuals or through conventional experimental methods.

[0040] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A positive pressure absorption device for acetamiprid monomethylamide, comprising a reaction kettle (1), characterized in that: The upper surface of the reactor (1) is connected to a solenoid valve A (2), one end of the solenoid valve A (2) is connected to an air outlet pipe A (3), one end of the air outlet pipe A (3) is fixedly connected to a flange (4), the surface of the flange (4) is threadedly connected to a pressure control assembly (5), the pressure control assembly (5) includes a back pressure valve (501), a conduit (502) and a pressure sensor (503), one end of the conduit (502) is connected to an auxiliary mechanism (6), the auxiliary mechanism (6) includes an air inlet pipe A (601) and a gas distributor ( 602), the surface of the conduit (502) is connected to an absorption tower (7), a cavity is provided inside the absorption tower (7), a temperature control component (8) is installed inside the cavity, the temperature control component (8) includes a heating grid (801), a controller (802) and an infrared temperature sensor (803), the inner wall of the absorption tower (7) is fixedly connected to a ceramic layer (9), the middle part of the inner wall of the ceramic layer (9) is fixedly connected to an absorption mechanism (10), the absorption mechanism (10) includes a mounting frame (1001) and an absorption net (1002).

2. The positive pressure absorption device for acetamiprid monomethylamide according to claim 1, characterized in that: The back pressure valve (501) is threadedly connected to the surface of the flange (4), one end of the back pressure valve (501) is threadedly connected to a conduit (502), the inner wall of the conduit (502) is installed with a pressure sensor (503), and one side of the back pressure valve (501) and the pressure sensor (503) are both electrically connected to one side of the controller (802) through a power line.

3. The positive pressure absorption device for acetamiprid monomethylamide according to claim 1, characterized in that: The air inlet pipe A (601) is connected to one end of the conduit (502), and one end of the air inlet pipe A (601) is connected to a gas distributor (602), and the gas distributor (602) is located on the lower side of the absorption tower (7).

4. The positive pressure absorption device for acetamiprid monomethylamide according to claim 1, characterized in that: The heating grid (801) is installed inside the cavity, one side of the heating grid (801) is electrically connected to a controller (802) via a power line, and the other side of the controller (802) is electrically connected to an infrared temperature sensor (803) via a power line.

5. The positive pressure absorption device for acetamiprid monomethylamide according to claim 1, characterized in that: The installation frame (1001) is fixedly connected to the middle portion of the inner wall of the ceramic layer (9), and three groups of absorption nets (1002) are fixedly connected to the inner wall of the installation frame (1001).

6. The positive pressure absorption device for acetamiprid monomethylamide according to claim 1, characterized in that: An air inlet pipe B (11) is connected through one side of the upper surface of the reactor (1), a pipeline valve (12) is installed on the surface of the air inlet pipe B (11), and four groups of supporting legs (13) are fixedly connected to the bottom surface of the reactor (1).

7. The positive pressure absorption device for acetamiprid monomethylamide according to claim 1, characterized in that: A solenoid valve B (14) is installed at the top of the absorption tower (7), one end of the solenoid valve B (14) is connected to an air outlet pipe B (15), and one side of the solenoid valve A (2) and the solenoid valve B (14) are both electrically connected to one end of the controller (802) through a power line.

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