CN117942880A - Internal heating type electromagnetic induction heating reinforced methane dry reforming fluidized bed reaction system - Google Patents
Internal heating type electromagnetic induction heating reinforced methane dry reforming fluidized bed reaction system Download PDFInfo
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 94
- 238000010438 heat treatment Methods 0.000 title claims abstract description 87
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 76
- 230000005674 electromagnetic induction Effects 0.000 title claims abstract description 51
- 238000002407 reforming Methods 0.000 title claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 24
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000000926 separation method Methods 0.000 claims abstract description 11
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 8
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 8
- 230000001105 regulatory effect Effects 0.000 claims abstract description 5
- 239000007795 chemical reaction product Substances 0.000 claims abstract description 4
- 230000006698 induction Effects 0.000 claims description 52
- 239000003054 catalyst Substances 0.000 claims description 38
- 239000007789 gas Substances 0.000 claims description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- 239000002245 particle Substances 0.000 claims description 8
- 238000011084 recovery Methods 0.000 claims description 7
- 238000006057 reforming reaction Methods 0.000 claims description 4
- 239000002918 waste heat Substances 0.000 claims description 4
- 230000033228 biological regulation Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 239000012263 liquid product Substances 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims description 2
- 239000000047 product Substances 0.000 claims description 2
- 239000011810 insulating material Substances 0.000 claims 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 15
- 229910052799 carbon Inorganic materials 0.000 abstract description 15
- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 230000005764 inhibitory process Effects 0.000 abstract description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 11
- 229910052739 hydrogen Inorganic materials 0.000 description 11
- 239000001257 hydrogen Substances 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000007787 solid Substances 0.000 description 6
- 230000008021 deposition Effects 0.000 description 5
- 230000009849 deactivation Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000005243 fluidization Methods 0.000 description 3
- 230000002401 inhibitory effect Effects 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001833 catalytic reforming Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001588 bifunctional effect Effects 0.000 description 1
- KDRIEERWEFJUSB-UHFFFAOYSA-N carbon dioxide;methane Chemical compound C.O=C=O KDRIEERWEFJUSB-UHFFFAOYSA-N 0.000 description 1
- 238000007233 catalytic pyrolysis Methods 0.000 description 1
- 238000007036 catalytic synthesis reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002500 effect on skin Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Abstract
The invention belongs to the technical field of methane dry reforming, and particularly relates to an internal heating type electromagnetic induction heating reinforced methane dry reforming fluidized bed reaction system. Comprises a gas feeding unit, a reaction unit, an electromagnetic induction heating unit, a gas-liquid separation unit and a control unit; the gas sources of methane and carbon dioxide are preheated by the gas feeding unit and then enter the reaction unit, the fluidized bed of the reaction unit is heated by the electromagnetic induction heating unit, the parameters of the electromagnetic induction heating unit are regulated by the control unit in the reaction process, and the reaction products are respectively obtained by the gas-liquid separation unit. The invention adopts an internal heating type electromagnetic induction heating technology to replace the traditional external heating mode, adopts a fluidized bed to replace a fixed bed, and organically combines the two modes so as to solve the key problems of heat rapid transfer and carbon deposit inhibition in the methane dry reforming process.
Description
Technical Field
The invention belongs to the technical field of methane dry reforming, and particularly relates to an internal heating type electromagnetic induction heating reinforced methane dry reforming fluidized bed reaction system.
Background
The hydrogen energy is known as the energy of the twenty-first century, and plays an increasingly important role in the world energy stage due to the characteristics of high heat value, good combustion performance, no pollution of reaction products and the like. Along with exploitation and utilization of unconventional natural gas resources such as coal bed gas, shale gas, combustible ice and the like, methane hydrogen production becomes an important hydrogen production mode in China. Among them, methane dry reforming is a thermochemical hydrogen production method with great potential, and has the advantages of simultaneously utilizing two main greenhouse gases of CH 4 and CO 2, and having environmental protection and economic value. Along with the increasing demand of China on clean energy, the methane dry reforming hydrogen production technology has wide development prospect in the field of hydrogen energy development in China.
The methane dry reforming hydrogen production process has the characteristics of high-temperature heat absorption and high energy consumption, and the rapid heat transfer and accurate control are usually limiting factors of the reaction rate. For this purpose, a reaction device for preparing synthesis gas by catalytic reforming of methane carbon dioxide is disclosed in the patent specification publication CN 111718737B. The inner cavity of the shell side shell of the reaction device is internally provided with a plurality of gas reaction tubes which are arranged in a regular hexagon, and the gas reaction tubes are filled with catalysts. The outer surface of the shell side shell is connected with a flame burner, and the flame burner penetrating through the shell side shell is adopted for heating. Such conventional external heating methods require heat transfer from the reactor wall to the catalyst bed, and not only have low heat transfer efficiency, but also have uneven heating distribution, complicated equipment structure, and difficulty in precise temperature control of the reaction region. More importantly, a large temperature gradient is easily formed between the reactor wall and the catalyst bed, resulting in carbon deposit and deactivation of the catalyst surface and, in severe cases, possible plugging of the reactor tubes. Deactivation of the catalyst carbon deposit has become a technical bottleneck restricting the industrial application of dry reforming of methane. In contrast, the electromagnetic induction heating technology can avoid an intermediate heat transfer medium in the traditional heating, directly provide required heat for a reaction area, improve the heat efficiency, reduce the temperature gradient in the reactor and be beneficial to inhibiting the carbon deposit deactivation of the catalyst.
The patent specification with the publication number of CN114558525B discloses a reaction device for preparing synthesis gas by methane and carbon dioxide, which adopts an electromagnetic induction heating coil to heat a reaction tube, a lining cover is arranged in a gas reaction tube, a catalyst is stored by utilizing an interlayer of the lining cover, the contact area between mixed gas and the catalyst is increased, and the catalytic synthesis efficiency is further improved. However, the patent adopts a fixed bed reactor and simple heating reaction tube wall surface heating, the heating surface is single, and the problems of poor heat and mass transfer effect, low gas-solid contact rate, large bed temperature gradient, low energy utilization rate, channel blockage caused by carbon deposition of the catalyst and the like often occur, so that the catalytic reforming efficiency is seriously influenced. In contrast, the fluidized bed has the advantages of uniform particle mixing, high heat and mass transfer efficiency, sufficient gas-solid contact and the like, and the catalyst surface carbon deposition can be well restrained by the good heat transfer characteristic and the severe collision among the particles, so that the operation stability is enhanced, and the regeneration difficulty of the catalyst is effectively reduced. However, the fluidization effect is easily affected by multiple factors, and the phenomenon of non-fluidization possibly occurs, so that the gas-solid contact is weakened. The magnetic field is introduced to inhibit back mixing and bubble formation, so that the gas-solid contact efficiency is further improved, and the carbon deposit of the catalyst is reduced. Therefore, the electromagnetic induction heating fluidized bed reaction system is expected to become an important technical means for solving the heat transfer limit and carbon deposition existing in methane dry reforming and realizing industrial application.
Disclosure of Invention
Aiming at the technical problems of uneven heating, difficult temperature control, deactivation of catalyst carbon deposit and the like of the existing methane dry reforming reaction system, the invention adopts an internal heating type electromagnetic induction heating technology to replace the traditional external heating mode, adopts a magnetic fluidized bed to replace a fixed bed, and organically combines the two modes so as to solve the key problems of heat rapid transfer and carbon deposit inhibition in the methane dry reforming process.
The invention directly provides the needed heat to the reaction area through electromagnetic induction heating, thereby not only greatly improving the heat transfer efficiency, but also reducing the temperature gradient distribution in the reactor, and further effectively inhibiting the generation of carbon deposit on the surface of the catalyst. Secondly, by adopting a magnetic-catalytic dual-function porous particle catalyst (such as a magnesia spinel magnetic catalyst for catalytic pyrolysis of coal disclosed by publication No. CN 113559876B), the accurate control of the temperature of a reaction area is realized, the generation of hot spots and local overtemperature are avoided, and the high efficiency and stability of the catalyst are ensured. The use of a fluidized bed reactor under the influence of a magnetic field also ensures adequate contact between the reaction gas and the catalyst. Finally, a heat recovery device is arranged at the outlet of the reactor and the induction coil part to recover the heat of the condensed gas-liquid reactant separation and cooling coil so as to improve the energy utilization efficiency. The organic cooperation of the technology realizes a complete set of internal heating type electromagnetic induction heating reinforced methane dry reforming fluidized bed reaction system, can continuously and stably run, and breaks through the industrial technical bottleneck of the field.
The invention provides an internal heating type electromagnetic induction heating reinforced methane dry reforming fluidized bed reaction system which comprises a gas feeding unit, a reaction unit, an electromagnetic induction heating unit, a gas-liquid separation unit and a control unit.
The gas feed unit comprises a pre-heater,
The reaction unit comprises a fluidized bed reactor and a magnetic-catalytic dual-function catalyst,
The electromagnetic induction heating unit comprises a high-frequency induction heater and an induction coil,
The gas-liquid separation unit comprises a water chiller, a condenser and a separator,
The control unit comprises a temperature sensor, a pressure sensor and a flow sensor;
The gas sources of methane and carbon dioxide are preheated by the gas feeding unit and then enter the reaction unit, the fluidized bed reactor of the reaction unit carries out heating reaction by the electromagnetic induction heating unit, the parameters of the electromagnetic induction heating unit are regulated by the control unit in the reaction process, and the reaction products respectively obtain gas products and liquid products by the gas-liquid separation unit. The units are matched with each other to realize an internal heating type electromagnetic induction heating reinforced methane dry reforming fluidized bed reaction system.
Further, the gas source of methane and carbon dioxide is connected with the gas inlet end of the preheater, the gas outlet end of the preheater is connected with the inlet end of the fluidized bed reactor, the outlet end of the fluidized bed reactor is connected with the inlet end of the condenser, the outlet end of the condenser is connected with the inlet end of the separator, the upper part of the separator is provided with a gas outlet, and the lower part is provided with a liquid outlet.
Further, the fluidized bed reactor is internally filled with a magnetic-catalytic dual-function catalyst, the magnetic-catalytic dual-function catalyst has the capacity of catalyzing methane dry reforming reaction and the capacity of responding electromagnetic induction heating, and particle movement regulation is implemented under the action of the magnetic field of the high-frequency induction coil.
Further, an electromagnetic induction coil surrounds the outside of the fluidized bed reactor, the induction coil is connected with a high-frequency induction heater, the water outlet end of the high-frequency induction heater is connected with the condensed water inlet end of the condenser, the water inlet end of the high-frequency induction heater is connected with the liquid outlet end of the preheater through a water chiller, and the condensed water outlet end of the condenser is connected with the liquid inlet end of the preheater.
Further, a temperature sensor is arranged at the middle lower part of the fluidized bed reactor, a pressure sensor, a high-frequency induction heater and a flow sensor are arranged at the upper part of the fluidized bed reactor, and a flow sensor is arranged on a circulating water pipe between the high-frequency induction heater and the condenser.
In the present invention,
The preheater is used to mix and preheat the methane and carbon dioxide feed gases to the desired reaction temperature.
The fluidized bed reactor is used for carrying out a methane dry reforming hydrogen production reaction, and the outer wall surface is wrapped with a heat insulation material for reducing heat loss.
The high frequency induction heater is used for converting 50Hz low frequency electricity into 20KHz high frequency alternating current and outputting the high frequency alternating current to the induction coil so as to improve eddy current and skin effect, thereby improving heating strength and efficiency. The induction coil is a multi-turn spiral coil and surrounds the outside of the fluidized bed reactor, an alternating magnetic field is formed inside the fluidized bed reactor, electric energy is converted into magnetic energy by utilizing an electromagnetic induction principle under the induction action of the alternating magnetic field and is transmitted to the magnetic-catalytic dual-function catalyst in the fluidized bed reactor, so that the inside of the magnetic-catalytic dual-function catalyst is directly heated.
The condensed water of the condenser comes from a water chiller shared with the electromagnetic induction heating unit for cooling the liquid and recovering heat.
The separator is used for separating the gas-liquid mixture from the condenser into gas and water. A valve is arranged below the separator and is used for draining water in the reaction process.
The temperature sensor, the pressure sensor and the flow sensor are respectively used for monitoring and collecting temperature, pressure and flow parameters in the reaction process, and adjusting and controlling the high-frequency induction heater according to the set reaction conditions and parameter signals so as to ensure that the reaction temperature and the reaction conditions are maintained.
In the invention, the preheater, the high-frequency induction heater and the condenser also form a heat recovery unit, and the preheater is arranged behind the high-frequency induction heater and the condenser, recovers waste heat generated by the high-frequency induction heater and is conveyed into the preheater for preheating raw material gas, thereby realizing heat recovery and improving energy utilization efficiency.
The invention has the beneficial effects that:
(1) The heat transfer efficiency is obviously improved, the temperature inside the fluidized bed reactor is uniformly distributed, the carbon deposition on the surface of the catalyst is effectively inhibited, and the problems of low efficiency and carbon deposition existing in the traditional external heating are solved. Compared with the traditional external heating, the electromagnetic induction heating efficiency can be improved by more than 10 percent.
(2) The fluidized bed reactor and the magnetic-catalytic dual-function catalyst particles interact to greatly improve the gas-solid contact efficiency and improve the gas-solid mass transfer condition. The minimum fluidization speed can be reduced by introducing a magnetic field, the bubble content can be reduced, and back mixing can be inhibited.
(3) The invention directly provides the needed heat to the reaction area through electromagnetic induction heating, thereby not only greatly improving the heat transfer efficiency, but also reducing the temperature gradient distribution in the reactor, and further effectively inhibiting the generation of carbon deposit on the surface of the catalyst.
(4) The magnetic-catalytic dual-function porous particles are adopted, so that the temperature of a reaction area is accurately controllable, the temperature fluctuation is controlled within +/-5 ℃, and local overtemperature is avoided.
(5) The reaction stability and the continuous running time are obviously improved.
(6) The heat in the working procedure is recovered, so that the energy utilization efficiency of the system is improved by about 10 percent.
(7) The technical route successfully breaks through the industrial technical problem of the methane dry reforming process, realizes the continuous hydrogen production reaction process with high heat efficiency, less carbon deposit and stable reaction, and has important engineering application prospect.
Drawings
FIG. 1 is a schematic diagram of a fluidized bed reaction system for thermally and electromagnetically heating and strengthening methane dry reforming;
Reference numerals illustrate:
1-a preheater; 2-a water chiller; 3-a high frequency induction heater; 4-an induction coil; 5-magnetic-catalytic bifunctional catalyst; 6-a fluidized bed reactor; 7-a condenser; 8-a separator; 9-a temperature sensor; 10-a pressure sensor; 11-flow sensor.
Detailed Description
The invention discloses an internal heating type electromagnetic induction heating reinforced methane dry reforming fluidized bed reaction system, the structure of which is shown in figure 1.
The system comprises a gas feeding unit, a reaction unit, an electromagnetic induction heating unit, a gas-liquid separation unit and a control unit; the units are matched with each other to realize an internal heating type electromagnetic induction heating reinforced methane dry reforming fluidized bed reaction system.
The gas feed unit comprises a preheater 1,
The reaction unit comprises a fluidized bed reactor 6 and a magnetic-catalytic dual-function catalyst 5,
The electromagnetic induction heating unit includes a high-frequency induction heater 3 and an induction coil 4,
The gas-liquid separation unit comprises a water chiller 2, a condenser 7 and a separator 8,
The control unit comprises a temperature sensor 9, a pressure sensor 10 and a flow sensor 11;
the gas source of methane and carbon dioxide is connected with the gas inlet end of the preheater 1 of the feeding unit, the gas outlet end of the preheater 1 is connected with the inlet end of the fluidized bed reactor 6, the outlet end of the fluidized bed reactor 6 is connected with the inlet end of the condenser 7, the outlet end of the condenser 7 is connected with the inlet end of the separator 8, the upper part of the separator 8 is provided with a gas outlet, and the lower part is provided with a liquid outlet. The fluidized bed reactor 6 is also internally filled with a magnetic-catalytic dual-function catalyst 5, and the magnetic-catalytic dual-function catalyst 5 has the capacity of catalyzing methane dry reforming reaction and the capacity of responding electromagnetic induction heating, and carries out particle movement regulation under the action of the magnetic field of a high-frequency induction coil. The outside of the fluidized bed reactor 6 is surrounded by an electromagnetic induction coil 4, the induction coil 4 is connected with a high-frequency induction heater 3, meanwhile, the water outlet end of the high-frequency induction heater 3 is connected with the condensed water inlet end of a condenser 7, the water inlet end of the high-frequency induction heater 3 is connected with the liquid outlet end of the preheater 1 through a water chiller 2, and the condensed water outlet end of the condenser 7 is connected with the liquid inlet end of the preheater 1.
A temperature sensor 9 is arranged at the middle lower part of the fluidized bed reactor 6, a pressure sensor 10 is arranged at the upper part of the fluidized bed reactor 6, and a flow sensor 11 is arranged on a circulating water pipe between the high-frequency induction heater 3 and the condenser 7. The temperature, pressure and flow parameters in the reaction process are respectively monitored and collected, and the high-frequency induction heater 3 and the like are regulated and controlled according to the set reaction conditions and parameter signals so as to ensure that the reaction temperature and the reaction conditions are maintained.
The fluidized bed reactor 6 is used for carrying out a methane dry reforming hydrogen production reaction, and the outer wall surface is wrapped with a heat insulation material for reducing heat loss.
The condensed water of the condenser 7 comes from the water chiller 2 shared with the electromagnetic induction heating unit for cooling the liquid and recovering heat.
The separator 8 is used to separate the gas-liquid mixture from the condenser 7 into gas and water. A valve is provided below the separator 8 for removing water during the reaction.
The high frequency induction heater 3 is for converting 50Hz low frequency electricity into 20KHz high frequency alternating current and outputting to the induction coil 4. The induction coil 4 is a multi-turn spiral coil and surrounds the outside of the fluidized bed reactor 6, converts magnetic energy into heat energy by utilizing the electromagnetic induction principle and transmits the heat energy into the magnetic-catalytic dual-function catalyst 5 in the fluidized bed reactor 6, thereby realizing direct heating of the inside of the catalyst 5.
In the invention, the preheater 1, the high-frequency induction heater 3 and the condenser 7 also form a heat recovery unit, and the preheater 1 is arranged behind the high-frequency induction heater 3 and the condenser 7, recovers waste heat generated by the high-frequency induction heater 3 and is conveyed into the preheater 1 for preheating raw material gas, thereby realizing heat recovery and improving energy utilization efficiency.
According to the internal heating type electromagnetic induction heating reinforced methane dry reforming fluidized bed reaction system, the internal heating of the fluidized bed reactor is realized by adopting a magnetic-catalytic dual-function catalyst and an electromagnetic induction heating technology, so that the reaction temperature and the reaction rate are improved, and meanwhile, the energy consumption of external heating and the complexity of equipment are reduced. The system also recovers the heat generated in the reaction process by arranging the heat recovery unit, and further improves the energy utilization efficiency. The system has the advantages of simple structure, convenient operation, high reaction efficiency, low energy consumption and the like, and is suitable for industrial production of methane dry reforming hydrogen production.
Claims (9)
1. The internal heating type electromagnetic induction heating reinforced methane dry reforming fluidized bed reaction system is characterized by comprising a gas feeding unit, a reaction unit, an electromagnetic induction heating unit, a gas-liquid separation unit and a control unit;
the gas feed unit comprises a preheater (1),
The reaction unit comprises a fluidized bed reactor (6) and a magnetic-catalytic dual-function catalyst (5),
The electromagnetic induction heating unit comprises a high-frequency induction heater (3) and an induction coil (4),
The gas-liquid separation unit comprises a water chiller (2), a condenser (7) and a separator (8),
The control unit comprises a temperature sensor (9), a pressure sensor (10) and a flow sensor (11);
The gas sources of methane and carbon dioxide are preheated by the gas feeding unit and then enter the reaction unit, the fluidized bed reactor (6) of the reaction unit carries out heating reaction by the electromagnetic induction heating unit, the parameters of the electromagnetic induction heating unit are regulated by the control unit in the reaction process, and the reaction products respectively obtain gas products and liquid products by the gas-liquid separation unit.
2. The internal heating type electromagnetic induction heating reinforced methane dry reforming fluidized bed reaction system as claimed in claim 1, wherein a gas source of methane and carbon dioxide is connected with a gas inlet end of a preheater (1), a gas outlet end of the preheater (1) is connected with an inlet end of a fluidized bed reactor (6), an outlet end of the fluidized bed reactor (6) is connected with an inlet end of a condenser (7), an outlet end of the condenser (7) is connected with an inlet end of a separator (8), a gas outlet is arranged at an upper part of the separator (8), and a liquid outlet is arranged at a lower part of the separator.
3. The internal heating type electromagnetic induction heating reinforced methane dry reforming fluidized bed reaction system as claimed in claim 1, wherein the fluidized bed reactor (6) is internally filled with a magnetic-catalytic dual-function catalyst (5), the magnetic-catalytic dual-function catalyst (5) has the capability of catalyzing methane dry reforming reaction and the capability of responding to electromagnetic induction heating, and particle movement regulation is implemented under the action of a magnetic field of a high-frequency induction coil.
4. The internal heating type electromagnetic induction heating reinforced methane dry reforming fluidized bed reaction system as claimed in claim 1, wherein an electromagnetic induction coil (4) is arranged around the outside of the fluidized bed reactor (6), the induction coil (4) is connected with a high-frequency induction heater (3), meanwhile, the water outlet end of the high-frequency induction heater (3) is connected with the condensed water inlet end of a condenser (7), the water inlet end of the high-frequency induction heater (3) is connected with the liquid outlet end of the preheater (1) through a water chiller (2), and the condensed water outlet end of the condenser (7) is connected with the liquid inlet end of the preheater (1).
5. The internal heating type electromagnetic induction heating reinforced methane dry reforming fluidized bed reaction system as claimed in claim 1, wherein a temperature sensor (9) is arranged at the middle lower part of the fluidized bed reactor (6), a pressure sensor (10) is arranged at the upper part of the fluidized bed reactor (6), and a flow sensor (11) is arranged on a circulating water pipe between the high-frequency induction heater (3) and the condenser (7).
6. The internal heating type electromagnetic induction heating reinforced methane dry reforming fluidized bed reaction system as claimed in claim 1, wherein the outer wall surface of the fluidized bed reactor (6) is wrapped with a heat insulating material.
7. The internal heating type electromagnetic induction heating reinforced methane dry reforming fluidized bed reaction system as claimed in claim 1, wherein the high-frequency induction heater (3) is used for converting 50Hz low-frequency electricity into 20KHz high-frequency alternating current and outputting the 20KHz high-frequency alternating current to the induction coil (4), the induction coil (4) is a multi-turn spiral coil, the induction coil surrounds the outside of the fluidized bed reactor (6), an alternating magnetic field is formed inside the fluidized bed reactor (6), magnetic energy is converted into heat energy under the induction action of the alternating magnetic field, and the heat energy is transmitted into the magnetic-catalytic dual-function catalyst (5) in the fluidized bed reactor (6), so that the internal direct heating of the magnetic-catalytic dual-function catalyst (5) is realized.
8. The internal heating type electromagnetic induction heating reinforced methane dry reforming fluidized bed reaction system as claimed in claim 1, wherein a temperature sensor (9), a pressure sensor (10) and a flow sensor (11) are respectively used for monitoring and collecting temperature parameters, pressure and flow parameters in the reaction process, and the high-frequency induction heater (3) is regulated and controlled according to set reaction conditions and parameter signals.
9. The internal heating type electromagnetic induction heating enhanced methane dry reforming fluidized bed reaction system as set forth in claim 1, wherein the preheater (1), the high frequency induction heater (3) and the condenser (7) further constitute a heat recovery unit, and the preheater (1) is disposed after the high frequency induction heater (3) and the condenser (7), recovers waste heat generated by the high frequency induction heater (3) and transmits the recovered waste heat to the preheater (1).
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| CN202410006751.8A CN117942880A (en) | 2024-01-03 | 2024-01-03 | Internal heating type electromagnetic induction heating reinforced methane dry reforming fluidized bed reaction system |
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