Positive ion papermaking dye methanol reaction solvent negative pressure distillation monitoring control device

Abstract

The utility model discloses a positive ion papermaking dye methanol reaction solvent negative pressure distillation monitoring control device, which relates to the technical field of negative pressure distillation monitoring, and comprises a base, a reaction kettle is fixedly arranged on the left side of the upper end of the base, the front end of the reaction kettle is fixedly connected with a mounting plate, the front end of the mounting plate is provided with a controller, and the controller is connected with the base. A temperature sensor is arranged on the inner side wall of the reaction kettle, heat is transferred to a heat conducting plate through a heating wire, the heat conducting plate transfers the heat to the interior of the reaction kettle to heat raw materials, the temperature in the reaction kettle is monitored through the temperature sensor, and the raw materials are heated to the most appropriate temperature; the vacuum pump is used for exhausting gas in the reaction kettle to maintain the required negative pressure level, and the pressure sensor is matched for monitoring the pressure in real time, so that the most appropriate pressure can be achieved, the temperature and the pressure are kept in the optimal range, the reaction efficiency can be improved to the greatest extent, and the expected product yield and quality are favorably realized.

Description

Technical Field

[0001] The utility model relates to the technical field of negative pressure distillation monitoring, in particular to a negative pressure distillation monitoring and control device for a cationic papermaking dye methanol reaction solvent. Background Art

[0002] Cationic papermaking dyes are commonly used in the dyeing process of paper. Cationic dyes have a positive charge and can combine with negatively charged fibers in the paper, thereby giving the paper color and improving the color effect of the paper. In order to improve the application effect of the dye and the dyeing quality of the paper, methanol reaction solvent is used to help the cationic dye dissolve better, so that the dye is evenly distributed in the papermaking process, improve the stability of the dye during processing and application, and reduce precipitation or aggregation.

[0003] When the cationic papermaking dye methanol reaction solvent is subjected to negative pressure distillation, if it is not detected and controlled, the temperature and pressure may not be maintained within the optimal range. If the reaction temperature is too low, the solvent and dye may not evaporate sufficiently, while if the reaction temperature is too high, it may cause premature decomposition or reaction. At the same time, unstable negative pressure will affect the boiling point during the distillation process, resulting in reduced separation efficiency. Based on this, the present invention provides a cationic papermaking dye methanol reaction solvent negative pressure distillation monitoring and control device to solve the above-mentioned problems. Utility Model Content

[0004] In order to solve the above technical problems, a negative pressure distillation monitoring and control device for a cationic papermaking dye methanol reaction solvent is provided. This technical solution solves the problem raised in the above background technology that when the cationic papermaking dye methanol reaction solvent is subjected to negative pressure distillation, if it is not detected and controlled, the temperature and pressure may not be maintained within the optimal range. If the reaction temperature is too low, it may lead to insufficient volatilization of the solvent and dye, while if the reaction temperature is too high, it may cause premature decomposition or reaction. At the same time, unstable negative pressure will affect the boiling point during the distillation process, resulting in reduced separation efficiency.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a negative pressure distillation monitoring and control device for a cationic papermaking dye methanol reaction solvent, comprising a base, a reactor fixedly mounted on the left side of the upper end of the base, a mounting plate fixedly connected to the front end of the reactor, a controller provided at the front end of the mounting plate, a temperature sensor provided on the inner sidewall of the reactor, a mounting groove provided at the bottom end of the reactor, a heating wire provided inside the mounting groove, a heat conducting plate provided at the upper end of the mounting groove, the lower end of the heat conducting plate abutting the heating wire, a vacuum pump fixedly mounted on the upper end of the base, a third conduit fixedly connected to the input end of the vacuum pump, a second conduit fixedly connected to the other end of the third conduit, and a pressure sensor provided at the position where the third conduit and the second conduit are connected, the other end of the second conduit being connected to the interior of the reactor, a fourth valve provided on the surface of the second conduit, the output end of the vacuum pump fixedly connected to the fourth conduit, a feed pipe fixedly connected to the outer surface of the reactor, and a sealing cap threadedly connected to the upper end of the feed pipe.

[0006] Preferably, a servo motor is fixedly mounted on the upper end of the reactor, and an output end of the servo motor extends into the interior of the reactor and is fixedly connected to a rotating rod.

[0007] Preferably, the lower end of the rotating rod is rotatably connected to the inner bottom end of the reactor, a plurality of stirring rods are fixedly connected to the outer surface of the rotating rod, and a connecting rod is fixedly installed between the upper and lower stirring rods.

[0008] Preferably, a storage barrel is fixedly installed on the right side of the upper end of the base, and a discharge pipe is fixedly connected to the outer surface of the storage barrel, and a second valve is installed on the surface of the discharge pipe.

[0009] Preferably, the upper end of the storage barrel is fixedly connected to a fifth conduit, a first valve is installed on the surface of the fifth conduit, and the upper end of the fifth conduit is fixedly connected to a condenser.

[0010] Preferably, the left end of the condenser is fixedly connected to a first conduit, a third valve is installed on the surface of the first conduit, and the other end of the third conduit is connected to the interior of the reactor.

[0011] Compared with the prior art, the utility model provides a negative pressure distillation monitoring and control device for a cationic papermaking dye methanol reaction solvent, which has the following beneficial effects:

[0012] Heat is transferred to the heat conducting plate through the heating wire, and the heat conducting plate transfers the heat to the inside of the reactor to heat the raw materials. The temperature inside the reactor is monitored by a temperature sensor so that it is heated to the most suitable temperature. The gas inside the reactor is removed by a vacuum pump to maintain the required negative pressure level. The pressure is monitored in real time with a pressure sensor so that it can reach the most suitable pressure. Both temperature and pressure are kept within the optimal range, which can maximize the reaction efficiency and help achieve the expected product yield and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention from another perspective;

[0015] Figure 3 Schematic diagram of the internal structure of the reactor in the present invention;

[0016] Figure 4 It is a structural diagram of the installation groove in the utility model.

[0017] The numbers in the figure are:

[0018] 1. Base; 2. Reactor; 3. Mounting plate; 4. Controller; 5. Servo motor; 6. Rotating rod; 7. Stirring rod; 8. Connecting rod; 9. Temperature sensor; 10. Mounting slot; 11. Heating wire; 12. Heat conducting plate; 13. First conduit; 14. Condenser; 15. Second conduit; 16. Pressure sensor; 17. Vacuum pump; 18. Third conduit; 19. Fourth conduit; 20. Fifth conduit; 21. First valve; 22. Storage barrel; 23. Discharge pipe; 24. Second valve; 25. Feed pipe; 26. Sealing cover; 27. Third valve; 28. Fourth valve. DETAILED DESCRIPTION

[0019] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are merely examples, and those skilled in the art may conceive of other obvious variations.

[0020] Reference Figure 1-4As shown, a cationic papermaking dye methanol reaction solvent negative pressure distillation monitoring and control device includes a base 1, a reactor 2 is fixedly installed on the left side of the upper end of the base 1, a mounting plate 3 is fixedly connected to the front end of the reactor 2, a controller 4 is provided at the front end of the mounting plate 3, and the controller 4 can adopt the model: Honeywell UDC1200. The controller 4 can adopt any controller 4 that can achieve this function in the existing technology without limitation. The controller 4 is electrically connected to the servo motor 5, the temperature sensor 9, the heating wire 11, the pressure sensor 16, the vacuum pump 17, the first valve 21, the second valve 24 and the third valve. The inner side wall of the reactor 2 is provided with a temperature sensor 9. The temperature sensor 9 can adopt the model: KMQSS-125U-6. The temperature sensor 9 can adopt any sensor that can achieve this function in the existing technology without limitation. The bottom of the reactor 2 is provided with a mounting groove 10, and a heating wire 11 is provided inside the mounting groove 10. The controller 4 controls the heating wire 11 to heat up, and the temperature is transferred to the inside of the reactor 2 through the heat conducting plate 12, thereby controlling the temperature inside the reactor 2. The upper end of the mounting groove 10 is provided with a heat conducting plate 12, and the lower end of the heat conducting plate 12 abuts against the heating wire 11. A vacuum pump 17 is fixedly installed on the upper end of the base 1. The vacuum pump 17 reduces the air pressure inside the reactor 2 by extracting the gas inside the reactor 2. This low-pressure environment makes The boiling point of the liquid is lowered, and thus evaporation or distillation can be performed at a lower temperature. During the distillation process, reducing the pressure can make the liquid evaporate at a lower temperature, thereby improving the separation efficiency of the volatile components. The input end of the vacuum pump 17 is fixedly connected to the third conduit 18, and the other end of the third conduit 18 is fixedly connected to the second conduit 15. A pressure sensor 16 is provided at the position where the third conduit 18 and the second conduit 15 are connected. The pressure sensor 16 can be a model: PX3-3000. The pressure sensor 16 can be a sensor that can achieve this function in the existing technology without limitation. The pressure sensor 16 can monitor the negative pressure and adjust the vacuum pump 17 in time to maintain the most appropriate negative pressure. The upper end of the pressure sensor 16 is provided with the second conduit 15. The other end of the second conduit 15 is connected to the interior of the reactor 2. A fourth valve 28 is installed on the surface of the second conduit 15. The output end of the vacuum pump 17 is fixedly connected to the fourth conduit 19. The outer surface of the reactor 2 is fixedly connected to the feed pipe 25, and the upper end of the feed pipe 25 is threadedly connected to the sealing cap 26.

[0021] Reference Figure 2-4As shown, a servo motor 5 is fixedly installed on the upper end of the reactor 2, and the output end of the servo motor 5 extends to the interior of the reactor 2 and is fixedly connected to a rotating rod 6. The lower end of the rotating rod 6 is rotatably connected to the bottom end of the reactor 2. A plurality of stirring rods 7 are fixedly connected to the outer surface of the rotating rod 6. A connecting rod 8 is fixedly installed between the upper and lower stirring rods 7. Stirring can promote uniform heating and mixing, improve the separation efficiency of the solvent and dye, prevent local overheating or cooling, and thus ensure the stability and effect of the distillation process. A storage barrel 22 is fixedly installed on the right side of the upper end of the base 1 for storing The outer surface of the barrel 22 is fixedly connected to a discharge pipe 23, and a second valve 24 is installed on the surface of the discharge pipe 23. The upper end of the storage barrel 22 is fixedly connected to a fifth conduit 20, and a first valve 21 is installed on the surface of the fifth conduit 20. The upper end of the fifth conduit 20 is fixedly connected to a condenser 14, which is used to cool steam into liquid to improve the efficiency of the reaction process and the purity of the product. The left end of the condenser 14 is fixedly connected to the first conduit 13, and a third valve 27 is installed on the surface of the first conduit 13. The other end of the third conduit 18 is connected to the interior of the reactor 2.

[0022] The working principle and use process of the utility model are as follows: when in use, the controller 4 controls the heating wire 11 to heat, and the heating wire 11 transmits heat to the interior of the reactor 2 through the heat conducting plate 12, so that the temperature inside the reactor 2 reaches a suitable temperature. The vacuum pump 17 cooperates with the pressure sensor 16, the second conduit 15, the third conduit 18 and the fourth conduit 19 to reduce the pressure in the reactor 2 to a suitable level, creating a negative pressure environment, open the sealing cover 26, add raw materials to the interior of the reactor 2 through the feeding pipe 25, and the rotating rod 6 is driven to rotate by the servo motor 5. The stirring rod 7 is driven to rotate, thereby stirring the raw materials inside the reactor 2. Stirring can promote uniform heating and mixing, and prevent local overheating or cooling. Under negative pressure conditions, the reaction mixture is heated to evaporate it into gas. The third valve is opened to allow the evaporated gas to enter the condenser 14 through the first conduit 13. The gas is cooled in the condenser 14 and gradually condenses into liquid. The first valve 21 is opened, and the liquid flows into the interior of the storage barrel 22 through the fifth conduit 20 for collection. When it is needed, the second valve 24 is opened, and the solvent flows out from the discharge pipe 23.

[0023] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed for the present invention is defined by the appended claims and their equivalents.

Claims

1. A monitoring and control device for negative pressure distillation of a cationic papermaking dye methanol reaction solvent, characterized by: The invention comprises a base (1), a reactor (2) is fixedly mounted on the left side of the upper end of the base (1), a mounting plate (3) is fixedly connected to the front end of the reactor (2), a controller (4) is provided at the front end of the mounting plate (3), a temperature sensor (9) is provided on the inner side wall of the reactor (2), a mounting groove (10) is provided at the inner bottom end of the reactor (2), a heating wire (11) is provided inside the mounting groove (10), a heat conducting plate (12) is provided at the upper end of the mounting groove (10), the lower end of the heat conducting plate (12) is in contact with the heating wire (11), a vacuum pump (17) is fixedly mounted on the upper end of the base (1), and the vacuum pump ( The input end of the vacuum pump (17) is fixedly connected to a third conduit (18), the other end of the third conduit (18) is fixedly connected to a second conduit (15), and a pressure sensor (16) is provided at a position where the third conduit (18) and the second conduit (15) are connected. The other end of the second conduit (15) is connected to the interior of the reactor (2), and a fourth valve (28) is installed on the surface of the second conduit (15). The output end of the vacuum pump (17) is fixedly connected to a fourth conduit (19), and the outer surface of the reactor (2) is fixedly connected to a feed pipe (25), and the upper end of the feed pipe (25) is threadedly connected to a sealing cover (26).

2. The negative pressure distillation monitoring and control device for a cationic papermaking dye methanol reaction solvent according to claim 1, characterized in that: A servo motor (5) is fixedly mounted on the upper end of the reactor (2), and an output end of the servo motor (5) extends into the interior of the reactor (2) and is fixedly connected to a rotating rod (6).

3. The negative pressure distillation monitoring and control device for a cationic papermaking dye methanol reaction solvent according to claim 2, characterized in that: The lower end of the rotating rod (6) is rotatably connected to the inner bottom end of the reactor (2); a plurality of stirring rods (7) are fixedly connected to the outer surface of the rotating rod (6); and a connecting rod (8) is fixedly installed between the upper and lower stirring rods (7).

4. The negative pressure distillation monitoring and control device for a cationic papermaking dye methanol reaction solvent according to claim 1, characterized in that: A storage barrel (22) is fixedly mounted on the right side of the upper end of the base (1), a discharge pipe (23) is fixedly connected to the outer surface of the storage barrel (22), and a second valve (24) is mounted on the surface of the discharge pipe (23).

5. The negative pressure distillation monitoring and control device for a cationic papermaking dye methanol reaction solvent according to claim 4, characterized in that: The upper end of the storage barrel (22) is fixedly connected to a fifth conduit (20), a first valve (21) is installed on the surface of the fifth conduit (20), and the upper end of the fifth conduit (20) is fixedly connected to a condenser (14).

6. The negative pressure distillation monitoring and control device for a cationic papermaking dye methanol reaction solvent according to claim 5, characterized in that: The left end of the condenser tube (14) is fixedly connected to the first conduit (13), a third valve (27) is installed on the surface of the first conduit (13), and the other end of the third conduit (18) is connected to the interior of the reactor (2).

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