Nitrogen heating device
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- INNER MONGOLIA HELI CHEMICAL FIBER (GROUP) CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-05-15
AI Technical Summary
Existing nitrogen heating devices suffer from uneven heating and high energy consumption due to the low fluidity of nitrogen.
Multiple heating shells are arranged sequentially along a first direction inside the containment box. Each heating shell contains a heating element. An "S"-shaped nitrogen diffusion channel is formed by staggered baffles. Heating elements at different temperatures are placed between the heating shells. Nitrogen diffuses in an "S"-shaped path within the heating shell. Combined with the baffles stirring the nitrogen, uniform heating is ensured.
This improved the heating efficiency of nitrogen, reduced power consumption, and achieved uniform heating of nitrogen.
Smart Images
Figure CN224246439U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of nitrogen heating technology, and in particular to a nitrogen heating device. Background Technology
[0002] Chemical fibers are fibers with textile properties produced from natural or synthetic polymers as raw materials through processes such as preparing spinning solutions, spinning, and post-treatment. During the heat treatment of these fibers, nitrogen gas at a specific temperature is typically used to prevent oxidation (avoiding degradation of the fiber raw materials at high temperatures), promote reaction (optimizing polymer conversion pathways), and ensure safety (eliminating the effects of explosions). Therefore, a nitrogen heating device is required.
[0003] However, existing nitrogen heating devices typically use a high-power electric heater installed inside a horizontal tank. One side of the tank is a nitrogen inlet pipe, and the other side is a nitrogen outlet pipe. Nitrogen flows horizontally through the tank and exchanges heat with the electric heater. This means that the nitrogen needs to stay in the tank for a long time before it is heated to the required temperature, resulting in low nitrogen flow within the tank. Consequently, the nitrogen is unevenly heated, resulting in low heating efficiency and high energy consumption. Utility Model Content
[0004] This application provides a nitrogen heating device to solve the technical problems described in the background art above.
[0005] To solve the above-mentioned technical problems, this application adopts the following technical solution:
[0006] This application provides a nitrogen heating device, comprising:
[0007] The container has multiple heating shells arranged sequentially along a first direction and interconnected by a first pipe. Each heating shell is provided with a heating element for heating nitrogen gas entering it, and a nitrogen diffusion channel is formed inside it by multiple staggered first baffles and multiple second baffles to guide the nitrogen gas to diffuse in an "S" shaped path.
[0008] The heating temperatures of the multiple heating elements corresponding to the multiple heating shells are all different.
[0009] An air intake pipe, one end of which is used to introduce nitrogen gas, and the other end of which is connected to the heating shell disposed at one end in the first direction;
[0010] An exhaust pipe, one end of which is connected to the heating housing located at the other end in the first direction, and the other end of which is used to connect to a nitrogen heating utilization device.
[0011] Optionally, the heating housing includes an outer shell and an inner shell;
[0012] A receiving space for accommodating the heating element is formed between the outer shell and the inner shell;
[0013] The outer shell is made of heat-insulating material, and the inner shell is made of heat-conducting material.
[0014] Optionally, a plurality of the first baffles are disposed on the inner top surface or inner bottom surface of the heating housing, and each of the first baffles is at a first preset height from the inner top surface or inner bottom surface of the heating housing;
[0015] Multiple second baffles are disposed on the inner bottom surface or inner top surface of the heating housing, and each second baffle is at a second preset height from the inner bottom surface or inner top surface of the heating housing;
[0016] Wherein, the first preset height and the second preset height are both 0.1 to 0.15 times the distance between the inner bottom surface and the inner top surface of the heating shell.
[0017] Optionally, both the first and second spoilers are made of thermally conductive material.
[0018] Optionally, the nitrogen heating device further includes a preheater;
[0019] The medium inlet of the preheater is used to introduce a preheating medium at a preset temperature, and its air inlet and outlet are respectively connected to a nitrogen source and to the end of the air inlet pipe away from the heating shell through a second pipe.
[0020] Optionally, the container and the plurality of first pipes are all made of thermal insulation material and are provided with a door on the top.
[0021] Optionally, a control device is provided on the outer wall of the container, a flow regulating valve is provided on the first pipe, and a metering pump is provided on the air outlet pipe;
[0022] The multiple heating elements, the flow regulating valve, and the metering pump are all electrically connected to the control device.
[0023] The nitrogen heating device provided in this application arranges multiple heating shells sequentially along a first direction inside a housing, and the multiple heating shells are connected by a first pipe. Nitrogen enters the heating shell at one end along the first direction through the inlet pipe and diffuses sequentially to the heating shell at the other end of the first direction. After entering the heating shell, the nitrogen diffuses in an "S"-shaped path along the nitrogen diffusion channel, thereby increasing the diffusion distance of the nitrogen in the heating shell. This allows the nitrogen to fully contact the heat emitted by the heating element in the heating shell, so that the nitrogen is heated quickly. At the same time, multiple first and second baffles can agitate the nitrogen during the diffusion process, making the nitrogen more evenly heated during the diffusion process in the heating shell. Furthermore, the process of nitrogen gas entering the next heating shell from the previous heating shell through the first pipe is a process of nitrogen diffusion and polymerization, which further improves the uniformity of nitrogen gas diffusion between multiple heating shells. Moreover, the heating temperatures of the multiple heating elements corresponding to the multiple heating shells are different (for example, the temperature of the heating elements of the heating shells distributed along the first direction increases sequentially towards the gas outlet pipe), so that the nitrogen gas is heated to the nitrogen gas temperature required by the nitrogen gas utilization device during the uniform diffusion process, thereby improving the heating efficiency of nitrogen gas and reducing the consumption of electrical energy. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0025] Figure 1 This is a schematic diagram of the structure of a nitrogen heating device provided in an embodiment of this application;
[0026] Figure 2 Provided for an embodiment of this application Figure 1 Front view of the nitrogen heating device;
[0027] Figure 3 This is a schematic diagram of the internal structure of a container provided in an embodiment of this application;
[0028] Figure 4 This is a schematic diagram of the internal structure of the heating housing provided in one embodiment of this application;
[0029] Figure 5 Provided for an embodiment of this application Figure 4 Main sectional view of the heating housing.
[0030] In the diagram: 100, containment box; 101, box door; 102, control device; 201, first pipe; 2011, flow regulating valve; 202, second pipe; 300, heating shell; 301, heating element; 302, first baffle; 303, second baffle; 304, nitrogen diffusion channel; 305, outer shell; 306, inner shell; 307, containment space; 400, air inlet pipe; 500, air outlet pipe; 501, metering pump; 600, preheater. Detailed Implementation
[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this application.
[0032] refer to Figures 1 to 5 This application provides a nitrogen heating device, comprising:
[0033] The container 100 contains a plurality of heating shells 300 arranged sequentially along a first direction and interconnected by a first pipe 201. Each heating shell 300 contains a heating element 301 for heating nitrogen gas entering it, and a nitrogen diffusion channel 304 for guiding nitrogen gas to diffuse in an "S" shaped path is formed within it by a plurality of staggered first baffles 302 and a plurality of second baffles 303. The first direction is consistent with the length direction of the container 100. See details below. Figure 3 As shown. In addition, the heating element 301 includes, but is not limited to, a heating wire, which is not an innovative point of this application. Therefore, the applicant can select a heating element 301 with appropriate heating power according to the actual temperature to be heated during actual use.
[0034] The heating elements 301 corresponding to the multiple heating shells 300 have different heating temperatures. Typically, the heating temperature of the heating element 301 increases along the first direction according to the temperature at which nitrogen is to be heated. For example, if the heating temperature of nitrogen is 230°C, there are three heating elements 301. The first heating element 301 can have a heating temperature of 80°C, the second heating element 301 can have a temperature of 150°C, and the third heating element 301 can have a heating temperature of 230°C (the specific temperature depends on the actual situation and is not specifically limited here). The purpose of this is to gradually heat the nitrogen during the diffusion process through multiple heating elements 301, so that the nitrogen that is not fully heated in the previous heating shell 300 is reheated in the next heating shell 300, thereby improving the uniformity of nitrogen heating and increasing the heating efficiency of nitrogen.
[0035] The air intake pipe 400 has one end for introducing nitrogen gas and the other end connected to the heating shell 300 located at one end in the first direction. In actual operation, one end of the air intake pipe 400 is connected to a nitrogen source, such as a nitrogen storage tank.
[0036] An exhaust pipe 500 is provided, one end of which is connected to a heating housing 300 located at the other end in the first direction, and the other end of which is used to connect to a nitrogen heating utilization device. Heated nitrogen enters the nitrogen heating utilization device through the exhaust pipe 500, and the nitrogen heating utilization device includes, but is not limited to, a fiber heat treatment device.
[0037] The nitrogen heating device provided in this application arranges multiple heating shells 300 sequentially along a first direction within a housing 100, and the multiple heating shells 300 are connected by a first pipe 201. Nitrogen enters the heating shell 300 at one end along the first direction through an inlet pipe 400 and diffuses sequentially to the heating shell 300 at the other end of the first direction. After entering the heating shell 300, the nitrogen diffuses along the nitrogen diffusion channel 304 in an "S" shaped path, thereby increasing the diffusion distance of the nitrogen within the heating shell 300. This allows the nitrogen to fully contact the heat emitted by the heating element 301 within the heating shell 300, enabling the nitrogen to be heated quickly. At the same time, multiple first baffles 302 and second baffles 303 can agitate the nitrogen during the diffusion process, making the nitrogen more evenly heated during the diffusion process within the heating shell 300. Furthermore, the process of nitrogen gas entering the next heating shell 300 from the previous heating shell 300 through the first pipe 201 is a process of nitrogen diffusion and polymerization, which further improves the uniformity of nitrogen gas diffusion among multiple heating shells 300. Moreover, the heating temperatures of the multiple heating elements 301 corresponding to the multiple heating shells 300 are different (for example, the temperature of the heating elements 301 in the heating shells 300 distributed along the first direction increases sequentially towards the gas outlet pipe 500), so that the nitrogen gas is heated to the nitrogen gas temperature required by the nitrogen gas utilization device during the uniform diffusion process, thereby improving the heating efficiency of nitrogen gas and reducing the consumption of electrical energy.
[0038] In some embodiments, reference Figure 4 and Figure 5 The heating housing 300 in this application includes an outer shell 305 and an inner shell 306. Specifically, a receiving space 307 is formed between the outer shell 305 and the inner shell 306 to accommodate the heating element 301. The receiving space 307 may be the space formed between the outer peripheral wall of the inner shell 306 and the inner peripheral wall of the outer shell 305. The heating element 301 includes, but is not limited to, a heating wire. The heating element 301 is wound around the outer peripheral wall of the inner shell 306 so that the nitrogen gas entering the inner shell 306 is rapidly heated.
[0039] The outer shell 305 is made of heat-insulating material, while the inner shell 306 is made of heat-conducting material. Specifically, the heat-insulating material can be polyurethane, polystyrene, glass wool, aluminum silicate wool, etc., and can be selected according to actual conditions; this application does not impose specific limitations on it. The outer shell 305, made of heat-insulating material, serves to retain heat within the inner shell 306, preventing heat loss and ensuring that the temperature within each heating shell 300 remains stable and unaffected by heat emitted from other heating shells 300. The heat-conducting material can be aluminum alloy, copper, etc., and can be selected according to actual conditions; this application does not impose specific limitations on it. The inner shell 306, made of heat-conducting material, allows for rapid heat transfer from the heating element 301 within the accommodating space 307 to the inner shell 306 to heat the nitrogen gas diffusing and flowing through it, thereby improving the heating efficiency of the nitrogen gas.
[0040] In some embodiments, reference Figure 4 and Figure 5 In this application, a plurality of first baffles 302 are disposed on the inner top surface or inner bottom surface of the heating housing 300, and each first baffle 302 is at a first preset height from the inner top surface or inner bottom surface of the heating housing; wherein, the first preset height can be set according to the actual situation, and this application does not specifically limit it.
[0041] Multiple second baffles 303 are disposed on the inner bottom surface or inner top surface of the heating housing 300, and each second baffle 303 is at a second preset height from the inner bottom surface or inner top surface of the heating housing 300; wherein, the second preset height can be set according to the actual situation, and this application does not specifically limit it.
[0042] In the above embodiments, if multiple first baffles 302 are disposed on the inner top surface of the heating housing 300, then multiple second baffles 303 are disposed on the inner bottom surface of the heating housing 300; if multiple first baffles 302 are disposed on the inner bottom surface of the heating housing 300, then multiple second baffles 303 are disposed on the inner top surface of the heating housing 300. The purpose is to ensure that the multiple first baffles 302 and multiple second baffles 303 are staggered and disposed vertically within the heating housing 300, so that the nitrogen diffusion channel 304 formed by the two within the heating housing 300 can guide nitrogen to diffuse in an "S"-shaped path within the heating housing 300, thereby increasing the diffusion path of nitrogen within the heating housing 300, allowing nitrogen to fully contact the heat emitted by the heating element 301 within the heating housing 300 so that the nitrogen is rapidly heated.
[0043] The first and second preset heights are both 0.1 to 0.15 times the distance between the inner bottom and top surfaces of the heating shell 300. If the first and second preset heights are too small, the nitrogen diffusion rate within the heating shell 300 may be too fast, resulting in low nitrogen heating efficiency. However, to ensure nitrogen diffusion within the heating shell 300, the first and second preset heights cannot be equal to the distance between the inner bottom and top surfaces. Therefore, the first and second preset heights, being proportional to the distance between the inner bottom and top surfaces of the heating shell 300, are used in this application. The fact that the first and second preset heights are both 0.1 to 0.15 times the distance between the inner bottom and top surfaces of the heating shell 300 not only ensures that nitrogen diffuses along an "S"-shaped path within the heating shell, increasing its residence time, but also ensures the smoothness of the nitrogen diffusion process within the heating shell 300.
[0044] In some embodiments, the plurality of first spoilers 302 and the plurality of second spoilers 303 in this application are all made of thermally conductive material.
[0045] In the above embodiments, the thermally conductive material can be aluminum alloy, copper, etc., and can be selected according to the actual situation. This application does not specifically limit it. Since multiple first baffles 302 and multiple second baffles 303 are staggered in the inner shell, the first baffles 302 and second baffles 303 made of thermally conductive material in this application can make the heat in the inner shell 306 quickly and evenly distributed in the inner shell 306, so that the nitrogen gas diffused and flowing through the inner shell 306 can be heated evenly, thereby improving the heating efficiency of nitrogen gas.
[0046] In some embodiments, reference Figures 1 to 3 The nitrogen heating device in this application also includes a preheater 600; specifically, the medium inlet of the preheater 600 is used to introduce a preheating medium at a preset temperature, and its inlet and outlet are respectively connected to a nitrogen source and the end of the inlet pipe 400 away from the heating shell 300 through the second pipe 202.
[0047] In the above embodiments, the waste heat medium of the preheater 600 can be high-temperature wastewater, high-temperature exhaust gas, etc., discharged by the chemical plant during the fiber preparation process. This not only alleviates the heating burden on the heating element 301, but also effectively utilizes the heat carried by the high-temperature wastewater and high-temperature exhaust gas generated during the fiber preparation process, thereby achieving rational resource utilization and reducing the cost of fiber production in the chemical plant. The preheated high-temperature wastewater and high-temperature exhaust gas, etc., can be discharged into wastewater treatment pipelines or exhaust gas treatment pipelines for further treatment.
[0048] In some embodiments, the container 100 and the plurality of first pipes 201 in this application are all made of thermal insulation material, and a door 101 is provided on the top of the container.
[0049] In the above embodiments, the insulation material can be stainless steel, galvanized steel sheet, aluminum alloy, etc., or a combination of stainless steel, galvanized steel sheet, aluminum alloy, etc., with polyurethane foam, polystyrene foam, etc., depending on the actual application requirements, and this application does not specifically limit it. The purpose of using insulation material to prepare the containment box and the first pipe 201 is to minimize heat loss from the containment box 100 and ensure that the nitrogen gas diffused into the first pipe 201 maintains its heated temperature as much as possible. The door 101 facilitates the installation and maintenance of the heating shell 300, etc.
[0050] In some embodiments, reference Figures 1 to 3 In this application, a control device 102 is provided on the outer wall of the container 100, a flow regulating valve 2011 is provided on the first pipe 201, and a metering pump 501 is provided on the air outlet pipe 500; wherein, the control device 102 includes, but is not limited to, a PLC controller.
[0051] In this application, multiple heating elements 301, flow regulating valves 2011, and metering pumps 501 are all electrically connected to the control device 102. Specifically, the opening and closing of the heating elements 301, flow regulating valves 2011, and metering pumps 501 are all controlled by the control device 102, as detailed in the prior art, and this is not an innovation of this application. Therefore, this application does not specifically limit its application.
[0052] In the above embodiments, the metering pump 501 not only provides the power for the heated nitrogen to enter the heated nitrogen utilization device, but also measures the flow rate of the heated nitrogen entering the heated nitrogen utilization device from the outlet pipe 500, facilitating precise control of the chemical fiber preparation process. Furthermore, the flow regulating valve 2011 on each first pipe 201 measures the flow rate of heated nitrogen diffusing from the previous heating shell 300 to the next heating shell 300, and controls the residence time of nitrogen in the previous heating shell 300 by opening and closing the flow regulating valve 2011, ensuring that the nitrogen is heated as uniformly as possible within each heating shell 300.
[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A nitrogen heating device, characterized in that, include: The container (100) has a plurality of heating shells (300) arranged sequentially along a first direction and interconnected by a first pipe (201); each heating shell (300) is provided with a heating element (301) for heating nitrogen gas entering it, and a nitrogen diffusion channel (304) is formed inside it by a plurality of staggered first baffles (302) and a plurality of second baffles (303) for guiding the nitrogen gas to diffuse in an "S" shaped path. The heating temperatures of the plurality of heating shells (300) corresponding to the plurality of heating elements (301) are all different; An air intake pipe (400) is provided, one end of which is used to introduce the nitrogen gas, and the other end of which is connected to the heating housing (300) located at one end in the first direction. An exhaust pipe (500) is provided, one end of which is connected to the heating housing (300) located at the other end in the first direction, and the other end of which is used to connect to a nitrogen heating utilization device.
2. The nitrogen heating device according to claim 1, characterized in that, The heating housing (300) includes an outer shell (305) and an inner shell (306); A receiving space (307) for accommodating the heating element (301) is formed between the outer shell (305) and the inner shell (306). The outer shell (305) is made of heat-insulating material, and the inner shell (306) is made of heat-conducting material.
3. The nitrogen heating device according to claim 1, characterized in that, A plurality of first baffles (302) are disposed on the inner top surface or inner bottom surface of the heating housing (300), and each first baffle (302) is at a first preset height from the inner top surface or inner bottom surface of the heating housing (300); A plurality of second baffles (303) are disposed on the inner bottom surface or inner top surface of the heating housing (300), and each second baffle (303) is at a second preset height from the inner bottom surface or inner top surface of the heating housing (300); Wherein, the first preset height and the second preset height are both 0.1 to 0.15 times the distance between the inner bottom surface and the inner top surface of the heating shell (300).
4. The nitrogen heating device according to claim 1, characterized in that, Both the first spoiler (302) and the second spoiler (303) are made of thermally conductive material.
5. The nitrogen heating device according to claim 1, characterized in that, It also includes a preheater (600); The medium inlet of the preheater (600) is used to introduce a preheating medium at a preset temperature, and its air inlet and outlet are respectively connected to a nitrogen source (2021) and to the end of the air inlet pipe (400) away from the heating shell (300) through a second pipe (202).
6. The nitrogen heating device according to claim 1, characterized in that, The container (100) and the plurality of first pipes (201) are all made of thermal insulation material and are provided with a door (101) on the top.
7. The nitrogen heating device according to any one of claims 1 to 6, characterized in that, A control device (102) is provided on the outer wall of the container (100), a flow regulating valve (2011) is provided on the first pipe (201), and a metering pump (501) is provided on the outlet pipe (500). The multiple heating elements (301), the flow regulating valve (2011), and the metering pump (501) are all electrically connected to the control device (102).