Heating system of reforming reactor
By setting up a combined heating system of electromagnetic induction coil and heat exchange pipeline on the reforming reactor, the problems of low heating efficiency and high energy consumption in the methanol hydrogen production process are solved, and efficient and energy-saving heating effects are achieved, and the manufacturing cost and production cycle of the equipment are reduced.
Patent Information
- Application Number
- CN202421995065.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-17
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-08-17
AI Technical Summary
During the methanol hydrogen production process, the heating method of the reforming reactor leads to high power consumption and long heating time, and the carbon deposit problem of the electric heating rod reduces the heating efficiency.
A combined heating system of electromagnetic induction coil and heat exchange pipeline is adopted. The electromagnetic induction coil is spirally wound on the outer surface of the heat exchange pipeline through the electromagnetic induction coil, heated by electromagnetic eddy current, and equipped with a temperature control device and a heat equalization device to ensure heating efficiency and temperature equalization.
It improves heating efficiency, reduces energy consumption, shortens heating time, and due to the absence of carbon deposits, the equipment life is extended and the cost is reduced.
Smart Images
Figure CN222943474U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of methanol hydrogen production, in particular to a heating system for a reforming reactor. Background Art
[0002] With the maturity and stability of the methanol hydrogen production process, hydrogen energy, as a clean energy, has been widely promoted and applied in various high-energy-consuming industries. At present, the application of hydrogen energy is not limited to vehicles, distributed power generation, ships and other fields, but also can be used as an energy substitute in industrial applications, especially in hydrogen metallurgy, kilns, heat treatment, incineration and other industries in the past two years.
[0003] However, in the current methanol hydrogen production process, when the reforming reactor equipment heats all the equipment, it usually adopts natural gas thermal oil furnace, methanol catalytic oxidation thermal oil furnace and electric heating thermal oil furnace to preheat the equipment. The heating from the normal temperature stage to the high temperature required for the process reaction requires high power consumption and long heating time. Therefore, the above-mentioned indirect heating method increases the energy consumption of the hydrogen production system and the unit power consumption cost is also high.
[0004] Especially when thermal oil is used as the heat transfer medium, conventional technology uses electric heating rods to heat the thermal oil. This heating method will cause carbon accumulation on the surface of the electric heating rod. As time accumulates, the thickness of the carbon deposit layer increases, which will make the heating efficiency of the electric heating rod low and the heating time long, thereby wasting more energy. Utility Model Content
[0005] In view of the deficiencies of the prior art, the present invention provides the following technical solutions:
[0006] A heating system for a reforming reactor, the heating system comprising a heat exchange pipeline and an electromagnetic induction device arranged on the reforming reactor; the heat exchange pipeline comprises a heat exchange pipeline body, a heat exchange pipeline inlet and a heat exchange pipeline outlet, the heat exchange pipeline body is arranged on the outer surface of the reforming reactor, the heat exchange pipeline inlet is used to introduce methanol water solution; the heat exchange pipeline outlet is connected to the methanol water inlet of the reforming reactor; the electromagnetic induction device comprises an electromagnetic heating controller and an electromagnetic induction coil, the electromagnetic induction coil is connected to the electromagnetic heating controller, and the electromagnetic induction coil is arranged on the outer surface of the heat exchange pipeline body.
[0007] Preferably, the heat exchange pipeline body is spirally wound on the reforming reactor, and the electromagnetic induction coil is laid on the outer surface of the heat exchange pipeline body in a spirally wound manner.
[0008] Preferably, the heating system further comprises a first heat insulation layer, which comprises a heat preservation layer and a heat reflection layer, wherein the heat preservation layer is sleeved on the outer surface of the electromagnetic induction coil; and the heat reflection layer is sleeved on the outer surface of the heat preservation layer.
[0009] Preferably, the heating system further comprises a temperature control device, and the temperature control device adopts a temperature interlocking method to adjust the heating speed and power of the electromagnetic induction device in real time.
[0010] Preferably, the heating system is also provided with a heat equalization device to balance the temperature of the reforming reactor and the heating system.
[0011] Preferably, the heat equalization device includes a heat medium, a loop pipeline, an expansion tank, an inlet pipeline and a first valve; the expansion tank is used to store the heat medium; the loop pipeline is provided with a loop inlet end and a loop outlet end, and the inlet pipeline connects the outlet of the expansion tank with the loop inlet end; the first valve is arranged in the inlet pipeline; the loop outlet end is connected with the heat medium inlet of the reforming reactor.
[0012] Preferably, the heat equalization device is further provided with a filter and an exhaust pipeline; the filter is arranged in the loop pipeline; the exhaust pipeline is provided with an exhaust inlet end and an exhaust outlet end, and the exhaust inlet end is connected with the loop outlet end.
[0013] Preferably, the heat equalization device further comprises a heat medium pump and a second heat insulation layer; the heat medium pump is arranged in the loop pipeline; the outer surfaces of the loop pipeline, the exhaust pipeline and the inlet pipeline are all provided with the second heat insulation layer.
[0014] Preferably, the expansion tank is a tank body, and the expansion tank is also provided with an exhaust port and an injection port; the exhaust outlet end is connected to the expansion tank, the injection port is used to inject the heat medium, and the exhaust port is used to discharge the gas in the exhaust pipeline.
[0015] Preferably, the heating system is also provided with a heat recovery device, which includes a heat exchanger, and the heat exchanger is provided with a first inlet, a first outlet, a second inlet and a second outlet, the first inlet is used to introduce methanol water raw material, the first outlet is connected to the methanol water inlet of the reforming reactor; the second inlet is connected to the mixed gas outlet of the reforming reactor.
[0016] Compared with the prior art, the utility model has the following beneficial effects:
[0017] 1) The technical solution of the utility model heats the reforming reactor by arranging an electromagnetic induction coil on the reforming reactor through electromagnetic eddy current, which not only has high heating efficiency but also can accurately control the temperature as needed;
[0018] 2) Due to the electromagnetic induction heating method, the structure of the reforming reactor is changed, so that the reforming reactor in the present application has the advantages of smaller volume, lower manufacturing cost, shorter production cycle, etc.;
[0019] 3) A heat circulation pipeline for circulating heat medium is set in the reforming reactor, and the heat medium is heated while the equipment is heated by electromagnetic eddy current, so that the heat medium circulates in the equipment and pipelines, ensuring that the heat generated by electromagnetic induction heating is taken away by the heat transfer medium, so that the temperature of the entire equipment is balanced. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a heating system diagram of Example 1 of the utility model;
[0021] Figure 2 This is an enlarged view of the electromagnetic induction coil of the utility model;
[0022] Figure 3 This is a heating system diagram of Example 2 of the utility model;
[0023] Figure 4 This is a heating system diagram of Example 3 of the utility model. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] The reforming reactor 1 is an important component of the methanol hydrogen production device, and includes a methanol water inlet 11, a mixed gas outlet 12, a heat medium inlet 13 and a heat medium outlet 14. The technical solution of the utility model is based on the existing reforming reactor to design a heating system.
[0026] Embodiment 1:
[0027] A heating system for a reforming reactor, such as Figure 1 It comprises a heat exchange pipeline 2 and an electromagnetic induction device arranged on a reforming reactor 1; the reforming reactor 1 is used for carrying out a reforming hydrogen production reaction; the heat exchange pipeline 2 is used for providing methanol water to the reforming reactor to provide raw materials for the reforming hydrogen production reaction; the electromagnetic induction device is used for converting electrical energy into thermal energy to heat the heat exchange pipeline 2 and the reforming reactor 1, thereby ensuring the smooth progress of the reforming reaction.
[0028] Specifically, Figure 1As shown, the heat exchange pipeline 2 includes a heat exchange pipeline body 21, a heat exchange pipeline inlet 22 and a heat exchange pipeline outlet 23; the heat exchange pipeline 2 is arranged on the outer surface of the reforming reactor 1 in a spiral winding manner. On the one hand, this design utilizes the larger surface area of the reforming reactor 1 to achieve the purpose of efficient heat exchange, and on the other hand, utilizes the reforming reactor 1 as a carrier, so that the heating system occupies less space; the heat exchange pipeline inlet 22 is arranged at the bottom end of the pipeline body 21, for introducing methanol water raw material; the heat exchange pipeline outlet 23 is arranged at the top end of the pipeline body 21, which is connected to the methanol water inlet 11 of the reforming reactor 1, and is used to introduce the heated and vaporized methanol water raw material into the reforming reactor 1.
[0029] The electromagnetic induction device includes an electromagnetic heating controller (not shown) and an electromagnetic induction coil 3 connected to the ground spike heating controller, and the electromagnetic heating controller is used to provide electricity to the electromagnetic induction coil 3. Figure 2 As shown, the electromagnetic induction coil 3 is disposed on the outer surface of the heat exchange pipeline 2 in a spirally wound manner. In addition, due to the flexibility of the electromagnetic induction coil 3, the electromagnetic induction coil 3 can be disposed on the outer surface of the heat exchange pipeline 2 in a flat manner. The flattened area is calculated based on the overall power of the reforming reactor 1.
[0030] Furthermore, corresponding grooves can be provided on the surface of the reforming reactor 1, so that the installation of the heat exchange pipeline 2 is faster and more convenient; at the same time, the heat exchange pipeline 2 can also be installed on the surface of the reforming reactor 1 by welding.
[0031] In addition, in order to make the generated heat energy fully utilized by the reforming reactor 1, the heating system is also provided with a first heat insulation layer 4, which is sleeved on the outer surface of the electromagnetic induction coil 3. Specifically, the first heat insulation layer 4 includes a heat preservation layer 41 and a heat reflection layer 42; the heat preservation layer 41 is arranged on the outer surface of the electromagnetic induction coil 3 to prevent heat from overflowing; the heat reflection layer 42 is arranged on the outer surface of the heat preservation layer 41, so that all the heat is concentrated inside the reforming reactor 1, thereby improving the heat utilization rate. The heat preservation layer 41 can be selected as heat preservation cotton, more specifically, aluminum silicate heat preservation cotton; the heat reflection layer 42 is selected from heat reflection materials, specifically, aluminum sheet is selected as the heat reflection layer.
[0032] Furthermore, in order to control the heating process of the reforming reactor 1, a temperature control device (not shown in the figure) is also provided in the reforming reactor. The temperature control device adopts a temperature interlocking method to adjust the heating speed and power of the electromagnetic induction device in real time, thereby achieving the regulation of the temperature of the reforming reactor.
[0033] Embodiment 2:
[0034] The difference between this embodiment and embodiment 1 is that a heat equalization device is further provided in the heating system, and the heat equalization device is used to equalize the temperature of each corner in the reforming reactor 1 .
[0035] like Figure 3 As shown, the heat equalization device includes a heat medium, a loop pipeline 51, an expansion tank 52, an inlet pipeline 53 and a first valve 54; the heat medium is stored in the expansion tank 52; the loop pipeline 51 includes a loop inlet end and a loop outlet end; the inlet pipeline 53 connects the outlet of the expansion tank 52 with the loop inlet end; the first valve 55 is arranged in the inlet pipeline 53; the loop outlet end is connected to the heat medium inlet 13 of the reforming reactor 1; by opening the first valve 54, heat medium can be added to the loop pipeline 51; by closing the first valve 54, the heat medium is allowed to circulate only in the loop pipeline 51 and the reforming reactor 1.
[0036] In addition, in order to prevent the reforming reactor 1, the pipelines in the heating system and the impurities in the heat medium from clogging the pipelines, the heat equalization device is further provided with a filter 55, which is provided in the loop pipeline 51 to filter the impurities in the heat medium to reduce the maintenance rate of the loop pipeline 51. At the same time, a second valve 56 is also provided in the loop pipeline 51 to adjust the exhaust volume of the exhaust pipeline 57.
[0037] Furthermore, since there is a large amount of gas in the pipeline of the heating system when it is turned on, and gas will also be generated during long-term heating, in order to ensure that the heating system can operate safely. The heat equalization device is also provided with an exhaust pipeline 57, and the exhaust pipeline 57 is provided with an exhaust inlet end and an exhaust outlet end; the exhaust inlet end is connected to the loop outlet end of the loop pipeline 51; the gas in the loop pipeline 51 enters the exhaust pipeline by utilizing the characteristic that the gas is lighter than the heat medium; the exhaust outlet end is connected to the expansion tank 52; while exhausting the gas, a small amount of heat medium flowing out of the exhaust pipeline is recovered. In this embodiment, the expansion tank 52 is a tank body, such as Figure 2 The expansion tank 52 is also provided with an exhaust port 521 to discharge the gas in the heating system. At the same time, the expansion tank 52 is also provided with an injection port 522 and a liquid level linkage 523, through which the heat medium is added to the expansion tank 52; and the liquid level linkage 523 is used to monitor the amount of the heat medium in the expansion tank.
[0038] The heat balancing device is also provided with a heat medium pump 58 and a second thermal insulation layer (not shown in the figure). The heat medium pump 58 is arranged in the loop pipeline 51 so that the heat medium can circulate smoothly in the loop pipeline 51 and the reforming reactor 1; the second thermal insulation layer is arranged on the outer surface of the loop pipeline, exhaust pipeline and inlet pipeline in the heat balancing device to avoid heat energy loss in the heating system.
[0039] Embodiment 3:
[0040] Since the reformed mixed gas generated by the reforming reaction carries extremely high thermal energy, in order to improve thermal efficiency, this embodiment is different from Embodiment 1 or 2 in that a heat recovery device is also provided in the heating system, and the heat recovery device is used to fully recover the heat generated by the heating system.
[0041] like Figure 4 The heat recovery device comprises a heat exchanger 6, and the heat exchanger is provided with a first inlet 61, a first outlet 62, a second inlet 63 and a second outlet 64. The first inlet 61 is used to introduce methanol water raw material, the first outlet 62 is connected to the methanol water inlet 11 of the reforming reactor 1; the second inlet 63 is connected to the mixed gas outlet 12 of the reforming reactor 1, and the second outlet 64 is connected to the inlet of the corresponding equipment of the next process of reforming hydrogen production.
[0042] It can be seen that the above technical solution of using electromagnetic induction to heat the reforming reactor not only reduces the volume of the heating system, but also makes the heating process more controllable; it also makes the temperature of the reforming reactor more balanced.
[0043] It should be noted that the technical features in the above-mentioned embodiments 1 to 3 can be combined arbitrarily, and the combined technical solutions all belong to the protection scope of the present application. And in this article, terms such as "including", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or equipment including the elements.
[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A heating system for a reforming reactor, characterized in that: The heating system includes a heat exchange pipeline and an electromagnetic induction device arranged on the reforming reactor; the heat exchange pipeline includes a heat exchange pipeline body, a heat exchange pipeline inlet and a heat exchange pipeline outlet, the heat exchange pipeline body is arranged on the outer surface of the reforming reactor, the heat exchange pipeline inlet is used to introduce methanol water solution; the heat exchange pipeline outlet is connected to the methanol water inlet of the reforming reactor; the electromagnetic induction device includes an electromagnetic heating controller and an electromagnetic induction coil, the electromagnetic induction coil is connected to the electromagnetic heating controller, and the electromagnetic induction coil is arranged on the outer surface of the heat exchange pipeline body.
2. The heating system according to claim 1, characterized in that The heat exchange pipeline body is spirally wound on the reforming reactor, and the electromagnetic induction coil is laid on the outer surface of the heat exchange pipeline body in a spirally wound manner.
3. The heating system according to claim 2, characterized in that The heating system further comprises a first heat-insulating layer, which comprises a heat-insulating layer and a heat-reflecting layer. The heat-insulating layer is sleeved on the outer surface of the electromagnetic induction coil; and the heat-reflecting layer is sleeved on the outer surface of the heat-insulating layer.
4. The heating system according to claim 2, characterized in that The heating system also includes a temperature control device, which uses a temperature interlocking method to adjust the heating speed and power of the electromagnetic induction device in real time.
5. The heating system according to any one of claims 1 to 4, characterized in that: The heating system is also provided with a heat balancing device to balance the temperature of the reforming reactor and the heating system.
6. The heating system according to claim 5, characterized in that The heat equalization device includes a heat medium, a loop pipeline, an expansion tank, an inlet pipeline and a first valve; the expansion tank is used to store the heat medium; the loop pipeline is provided with a loop inlet end and a loop outlet end, and the inlet pipeline connects the outlet of the expansion tank with the loop inlet end; the first valve is arranged in the inlet pipeline; the loop outlet end is connected with the heat medium inlet of the reforming reactor.
7. The heating system according to claim 6, characterized in that The heat equalization device is also provided with a filter and an exhaust pipeline; the filter is arranged in the loop pipeline; the exhaust pipeline is provided with an exhaust inlet end and an exhaust outlet end, and the exhaust inlet end is communicated with the loop outlet end.
8. The heating system according to claim 7, characterized in that The heat equalization device also includes a heat medium pump and a second heat insulation layer; the heat medium pump is arranged in the loop pipeline; the outer surfaces of the loop pipeline, the exhaust pipeline and the inlet pipeline are all provided with the second heat insulation layer.
9. The heating system according to claim 7, characterized in that The expansion tank is a tank body, and is also provided with an exhaust port and an injection port; the exhaust outlet end is connected to the expansion tank, the injection port is used to inject the heat medium, and the exhaust port is used to discharge the gas in the exhaust pipeline.
10. The heating system according to claim 7, characterized in that The heating system is also provided with a heat recovery device, which includes a heat exchanger. The heat exchanger is provided with a first inlet, a first outlet, a second inlet and a second outlet. The first inlet is used to introduce methanol water raw material, and the first outlet is connected to the methanol water inlet of the reforming reactor; the second inlet is connected to the mixed gas outlet of the reforming reactor.