Wet strength agent production device based on far infrared heating

Abstract

The utility model belongs to the technical field of wet strength agent production equipment, and mainly relates to a wet strength agent production device based on far infrared heating, which comprises a reaction kettle body and a heating jacket arranged on the outer wall of the reaction kettle body, the heating jacket is used for heating materials in the reaction kettle body to promote the reaction of the materials, and the heating jacket is a far infrared heating jacket. Far infrared rays have certain penetrating power and can penetrate into the materials for heating, so that the interiors and the exteriors of the materials are heated at the same time, heating is more uniform, and the situation of local overheating or supercooling is avoided; meanwhile, molecules in a heated object directly move to generate heat through radiation of far infrared rays, the far infrared rays can be directly absorbed by the object and converted into heat energy, and loss of the heat in the transfer process is reduced, so that compared with a traditional heating mode, the purpose of heating can be achieved more quickly, the heating efficiency is high, and meanwhile energy is saved.

Description

Technical Field

[0001] This utility model belongs to the technical field of wet strength agent production equipment, and mainly relates to a wet strength agent production device based on far-infrared heating. Background Technology

[0002] Wet strength agents are widely used chemical additives in the papermaking industry, primarily used to improve the strength and durability of paper in humid environments. They form chemical bonds or cross-linked structures between paper fibers, thereby enhancing the bonding strength between them. Even when the paper absorbs moisture, these bonds or cross-linked structures resist the disruption of hydrogen bonds between fibers by water molecules, allowing the paper to maintain a certain strength in a wet state and preventing it from tearing, crumbling, or deforming. Paper treated with wet strength agents possesses excellent wet strength and other properties, meeting the needs of more specialized applications and thus broadening its application range. For example, in the food packaging industry, wet strength agents prevent packaging paper from breaking easily when exposed to moisture or oil, protecting food safety and hygiene; in industrial filter paper, tea bag paper, and seedling paper, wet strength agents allow the paper to maintain its filtering and packaging functions in humid or soaking environments.

[0003] The production of wet strength agents typically involves a series of chemical reactions, such as polymerization and cross-linking. These reactions often need to be carried out under specific temperature conditions to ensure successful processing and the acquisition of wet strength agents with good performance. For example, the synthesis of polyamide-epimyl chloride (PAE) wet strength agents requires controlling the reaction temperature within a certain range to promote a moderate cross-linking reaction between the polyamide and epichlorohydrin, generating a polymer with suitable molecular weight and degree of cross-linking, thereby imparting good wet strength to the paper.

[0004] However, the heat generated by traditional heating methods always transfers from one side to the other, resulting in uneven heating, which affects the chemical reaction, reduces the quality of the wet strength agent, and has low thermal efficiency, causing a lot of energy waste. Utility Model Content

[0005] This invention provides a wet strength agent production device based on far-infrared heating to solve the problem of uneven heating in the production of wet strength agents in the prior art.

[0006] To solve the above problems, the present invention adopts the following technical solution:

[0007] A wet strength agent production apparatus based on far-infrared heating includes a reaction vessel body and a heating jacket arranged on the outer wall of the reaction vessel body. The heating jacket is used to heat the material inside the reaction vessel body to promote its reaction. The heating jacket is a far-infrared heating jacket.

[0008] It has the following beneficial effects: Far-infrared rays have a certain penetrating ability, allowing them to penetrate deep into the material for heating, so that the inside and outside of the material are heated simultaneously, resulting in more uniform heating and avoiding local overheating or undercooling; at the same time, the radiation of far-infrared rays directly causes the molecular motion inside the heated object to generate heat, and far-infrared rays can be directly absorbed by the object and converted into heat energy, reducing heat loss during the transfer process. Therefore, compared with traditional heating methods, it can achieve the heating purpose more quickly, has higher heating efficiency, and saves energy; far-infrared heating does not produce pollutants or electromagnetic radiation or other substances harmful to the human body, making it more environmentally friendly and beneficial to human health.

[0009] Furthermore, the far-infrared heating jacket includes a far-infrared heating element and a reflector. The far-infrared heating element is circumferentially arrayed at the bottom of the reactor body, and the reflector is mounted on the outside of the far-infrared heating element to reflect far-infrared rays onto the reactor body.

[0010] It has the following beneficial effects: the far-infrared heating elements are evenly distributed around or at the bottom of the reactor body to ensure that the material inside the reactor body can be heated evenly. At the same time, the distance between the far-infrared heating elements and the outer wall of the reactor body is generally maintained at an appropriate distance to avoid local overheating or uneven heating; by reflecting far-infrared rays onto the reactor body, heat loss is reduced and heating efficiency is improved.

[0011] Furthermore, the reactor body is equipped with a temperature remote transmission display controller, which is electrically connected to the far-infrared heating jacket to control the operation of the far-infrared heating jacket.

[0012] It has the following beneficial effects: the temperature remote transmission display controller can transmit temperature data to a remote monitoring room or host computer to realize remote centralized monitoring and management; operators can conveniently set temperature alarm values, control parameters, etc. through the buttons or touch screen on the temperature remote transmission display controller; it can automatically control heating according to the set temperature value to realize automatic temperature adjustment and control, and keep the temperature stable within the set range.

[0013] Furthermore, the reactor body is provided with an inlet for materials to enter the reactor body;

[0014] The reactor body is provided with an outlet, which is used for materials to be discharged from the reactor body.

[0015] Furthermore, a stirring paddle is rotatably mounted inside the reactor body, and the stirring paddle is used to stir the materials inside the reactor body;

[0016] The reactor body is equipped with a motor, which is connected to a stirring paddle to drive its rotation.

[0017] It has the following beneficial effects: the stirring paddle makes the material flow continuously during the heating process, thereby achieving uniform heating.

[0018] Furthermore, the reactor body is made of stainless steel.

[0019] It has the following beneficial effects: Stainless steel has good far-infrared absorption and thermal conductivity, which can improve heating efficiency.

[0020] Furthermore, the inner wall of the reactor body is a smooth curved surface.

[0021] It has the following beneficial effects: the smooth curved surface is conducive to the propagation of far-infrared rays and the uniform distribution of heat. Attached Figure Description

[0022] The above and other objects, features, and advantages of exemplary embodiments of the present invention will become readily understood by reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of the present invention are shown by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0023] Figure 1 This is a schematic diagram of the structure of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Reactor body; 2. Far-infrared heating jacket; 3. Stirring paddle; 4. Motor; 5. Temperature remote transmission display controller; 6. Inlet; 7. Outlet. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0027] The following describes various non-limiting embodiments of this utility model. Any number of elements in the accompanying drawings is for illustrative purposes only and not for limitation, and any naming is for distinction only and has no limiting meaning. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0028] like Figure 1As shown, a wet strength agent production device based on far-infrared heating includes a reaction vessel body 1 and a heating jacket arranged on the outer wall of the reaction vessel body 1. The heating jacket is used to heat the material inside the reaction vessel body 1 to promote its reaction. The heating jacket is a far-infrared heating jacket 2. The reaction vessel body 1 is provided with an inlet 6 for material to enter the reaction vessel body 1, and an outlet 7 for material to exit from the reaction vessel body 1.

[0029] In this embodiment, the far-infrared heating jacket 2 heats the material by generating far-infrared rays. When the material absorbs far-infrared rays, a resonance phenomenon occurs, intensifying molecular motion and generating heat. This heating method does not primarily rely on heat conduction or convection, but rather generates heat directly through far-infrared radiation, causing the molecules within the heated material to move and thus resulting in high heating efficiency.

[0030] Because far-infrared rays can be directly absorbed by materials and converted into heat energy, heat loss during the transfer process can be reduced. Therefore, compared with traditional heating methods, it can achieve the heating purpose more quickly and save energy.

[0031] Far-infrared rays have a certain penetrating ability, which can penetrate deep into the material to heat it, so that the inside and outside of the material are heated at the same time, resulting in more uniform heating and avoiding local overheating or undercooling.

[0032] Far-infrared heating does not produce pollutants or electromagnetic radiation, making it environmentally friendly and beneficial to human health.

[0033] In this embodiment, the far-infrared heating jacket 2 includes a far-infrared heating element and a reflector. The far-infrared heating element is arranged in a circumferential array at the bottom of the reactor body 1, and the reflector is mounted on the outside of the far-infrared heating element to reflect far-infrared rays onto the reactor body 1.

[0034] In this embodiment, the far-infrared heating element is a far-infrared heating tube. Far-infrared heating tubes have advantages such as high heating efficiency and long lifespan. Different power and size far-infrared heating tubes can be selected according to the size of the reactor body 1 and the heating requirements. The far-infrared heating tube is made of materials such as metal or ceramic, and its surface is coated with a special coating that emits far-infrared rays, such as a silicon carbide coating. When current passes through the far-infrared heating tube, the tube heats up and radiates far-infrared rays.

[0035] In other embodiments, the far-infrared heating element is a far-infrared heating plate. For some reactor bodies 1 requiring large-area uniform heating, a far-infrared heating plate can be used. The far-infrared heating plate consists of insulating material and a heating element, and its surface also has a far-infrared radiation coating. It can be installed on the outer wall of the reactor body 1, transferring heat into the reactor body 1 through radiation.

[0036] In this embodiment, far-infrared heating elements are evenly distributed around or at the bottom of the reactor body 1 to ensure that the material inside the reactor body 1 is heated uniformly. For large reactor bodies 1, multiple layers of far-infrared heating elements can be installed on the outer surface of the reactor body 1 to improve heating uniformity. Meanwhile, the distance between the far-infrared heating elements and the outer surface of the reactor body 1 is generally maintained at an appropriate interval to avoid localized overheating or uneven heating.

[0037] A reflector is installed on the outer surface of the far-infrared heating element to reflect far-infrared rays onto the reactor body 1, reducing heat loss and improving heating efficiency. The reflector is made of a highly reflective metal material, such as aluminum or stainless steel, and its shape and size are designed according to the layout of the far-infrared heating element and the shape of the reactor body 1.

[0038] In this embodiment, a temperature remote transmission display controller 5 is installed on the reactor body 1. The temperature remote transmission display controller 5 is electrically connected to the far-infrared heating jacket 2 to control the operation of the far-infrared heating jacket 2.

[0039] In this embodiment, the temperature remote transmission display controller 5 is an instrument used to measure, control, and remotely transmit temperature signals.

[0040] In this embodiment, the temperature remote transmission display controller 5 consists of a temperature sensor, a signal processing circuit, a display unit, and a remote transmission module. The temperature sensor detects the temperature change of the measured material and converts it into a corresponding electrical signal, such as the thermocouple generating a thermoelectric potential, or the resistance value of a resistance temperature detector (RTD) changing with temperature. The signal processing circuit amplifies, filters, and linearizes the electrical signal output by the sensor, converting it into a standard digital or analog signal. The display unit displays the processed temperature signal in digital or graphical form, allowing operators to intuitively understand the current temperature. The remote transmission module transmits the temperature signal to a remote control center or other devices via wired or wireless means, enabling remote monitoring.

[0041] The temperature remote display controller 5 uses a high-precision temperature sensor and advanced signal processing technology to accurately measure temperature, with a measurement accuracy typically reaching ±0.1℃ or even higher.

[0042] The temperature remote transmission display controller 5 supports multiple remote transmission methods, such as 4-20mA current signal, RS485 bus, and wireless communication (such as ZigBee, GPRS, Bluetooth, etc.), which can transmit temperature data to a remote monitoring room or host computer to achieve remote centralized monitoring and management.

[0043] The temperature remote display controller 5 has a clear display screen that can show the current temperature value in real time. At the same time, operators can easily set temperature alarm values, control parameters, etc., using the buttons or touch screen on the temperature remote display controller 5.

[0044] When the temperature exceeds or falls below the set alarm value, the temperature remote display controller 5 can issue an audible and visual alarm signal to remind operators to take timely measures to avoid equipment damage or production accidents caused by abnormal temperature.

[0045] The temperature remote display controller 5 can automatically control heating according to the set temperature value, realize automatic temperature adjustment and control, and keep the temperature stable within the set range.

[0046] In this embodiment, a stirring paddle 3 is rotatably mounted inside the reactor body 1. The stirring paddle 3 is used to stir the materials inside the reactor body 1. A motor 4 is mounted on the reactor body 1, and the motor 4 is connected to the stirring paddle 3 to drive its rotation. The stirring paddle 3 inside the reactor body 1 ensures that the materials flow continuously during the heating process, thereby achieving uniform heating.

[0047] The material of the reactor body 1 has good far-infrared absorption and thermal conductivity to improve heating efficiency. Metal materials, such as stainless steel and carbon steel, have good far-infrared absorption and thermal conductivity. When considering the material of the reactor body 1, the compatibility between the material and the materials must also be considered to avoid chemical reactions that could affect product quality.

[0048] The structural design of the reactor body 1 is conducive to the propagation of far-infrared rays and the uniform distribution of heat. In this embodiment, the inner wall of the reactor body 1 is designed as a smooth curved surface to reduce the reflection and scattering of far-infrared rays.

[0049] This embodiment uses the reaction of diethylenetriamine and adipic acid to synthesize a wet-strength agent as an example:

[0050] 1. Intermediate Synthesis The intermediate synthesis is carried out first. Diethylenetriamine and adipic acid are added to reactor body 1, and the temperature is raised to 110°C using far-infrared heating to completely melt the materials. This temperature is then maintained at atmospheric pressure for 3 hours to ensure complete reaction. After the holding period, the temperature is further raised to 155°C using far-infrared heating. At this point, pure water is added to complete the intermediate synthesis process.

[0051] 2. After the synthesis of the crosslinking reaction intermediate is completed, the material flows by gravity into the next reactor body 1 to begin the crosslinking reaction. Pure water is added to reactor body 1, and the temperature is controlled at 35℃. Epichlorohydrin is then added at this temperature. Subsequently, under normal pressure, the temperature is raised to 55℃ by far-infrared heating and maintained at this temperature for 3 hours until the viscosity of the material reaches 50 cPa·s, marking the completion of the crosslinking reaction. After the reaction is complete, pure water is added to adjust the concentration of the material, followed by diluted sulfuric acid to adjust the pH to 4-5, terminating the reaction. Finally, urea, magnesium sulfate, and sorbitol are added, and through cooling, a low-chlorine wet-strength agent with a solid content of approximately 12.5% ​​is obtained.

Claims

1. A wet strength agent production apparatus based on far-infrared heating, characterized in that, It includes a reaction vessel body and a heating jacket arranged on the outer wall of the reaction vessel body. The heating jacket is used to heat the material inside the reaction vessel body to promote its reaction. The heating jacket is a far-infrared heating jacket.

2. The device for producing a far-infrared heating-based wet strength agent according to claim 1, characterized by, The far-infrared heating jacket includes a far-infrared heating element and a reflector. The far-infrared heating element is circumferentially arrayed at the bottom of the reactor body, and the reflector is mounted on the outside of the far-infrared heating element to reflect far-infrared rays onto the reactor body.

3. The device for producing a far-infrared heating-based wet strength agent according to claim 2, characterized by The reactor body is equipped with a temperature remote transmission display controller, which is electrically connected to the far-infrared heating jacket to control the operation of the far-infrared heating jacket.

4. The device for producing a far-infrared heating-based wet strength agent according to claim 3, characterized by The reactor body is provided with an inlet, which is used for materials to enter the reactor body; The reactor body is provided with an outlet, which is used to discharge materials from the reactor body.

5. The device for producing a far-infrared heating-based wet strength agent according to claim 4, characterized by The reactor body is equipped with a rotating stirring paddle, which is used to stir the materials inside the reactor body. The reactor body is equipped with a motor, which is connected to a stirring paddle to drive its rotation.

6. The device for producing a far-infrared heating-based wet strength agent according to any one of claims 1 to 5, characterized by The reactor body is made of stainless steel.

7. The device for producing a far-infrared heating-based wet strength agent according to any one of claims 1 to 5, characterized by The inner wall of the reactor body is a smooth curved surface.

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