CN115127378A - Particle/supercritical carbon dioxide heat exchange experiment system and power generation experiment system - Google Patents
Particle/supercritical carbon dioxide heat exchange experiment system and power generation experiment system Download PDFInfo
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- CN115127378A CN115127378A CN202110320974.8A CN202110320974A CN115127378A CN 115127378 A CN115127378 A CN 115127378A CN 202110320974 A CN202110320974 A CN 202110320974A CN 115127378 A CN115127378 A CN 115127378A
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- carbon dioxide
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- supercritical carbon
- heat exchange
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 404
- 239000002245 particle Substances 0.000 title claims abstract description 227
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 203
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 201
- 238000002474 experimental method Methods 0.000 title abstract description 39
- 238000010248 power generation Methods 0.000 title abstract description 24
- 238000003860 storage Methods 0.000 claims description 36
- 239000000498 cooling water Substances 0.000 claims description 32
- 239000007788 liquid Substances 0.000 claims description 30
- 238000010438 heat treatment Methods 0.000 claims description 27
- 239000012530 fluid Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 15
- 230000001105 regulatory effect Effects 0.000 claims description 14
- 238000011084 recovery Methods 0.000 claims description 9
- 230000001172 regenerating effect Effects 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 37
- 230000008569 process Effects 0.000 abstract description 35
- 239000008188 pellet Substances 0.000 description 19
- 238000010586 diagram Methods 0.000 description 16
- 239000008187 granular material Substances 0.000 description 14
- 238000001514 detection method Methods 0.000 description 7
- 238000012546 transfer Methods 0.000 description 7
- 239000006096 absorbing agent Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 231100000817 safety factor Toxicity 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000005243 fluidization Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000009123 feedback regulation Effects 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D13/00—Heat-exchange apparatus using a fluidised bed
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
Abstract
The invention provides a particle/supercritical carbon dioxide heat exchange experimental system and a power generation experimental system, wherein the power generation experimental system comprises a particle/supercritical carbon dioxide heat exchange experimental system, and the particle/supercritical carbon dioxide heat exchange experimental system comprises a supercritical carbon dioxide circulation loop, a particle circulation loop and a fluidized bed; at least part of the supercritical carbon dioxide circulation loop is positioned in the fluidized bed, the particle circulation loop is communicated with the fluidized bed, and high-temperature particles in the particle circulation loop flow through the supercritical carbon dioxide circulation loop positioned in the fluidized bed under the driving of the driving airflow of the fluidized bed so as to exchange heat between the high-temperature particles and the supercritical carbon dioxide. The invention can effectively ensure the circulating heat exchange between the high-temperature particles and the supercritical carbon dioxide, reduce the control difficulty of the operation process and improve the safety coefficient of the particle/supercritical carbon dioxide heat exchange experiment system and the power generation experiment system.
Description
Technical Field
The invention relates to the technical field of heat exchange, in particular to a particle/supercritical carbon dioxide heat exchange experimental system and a power generation experimental system.
Background
In a power generation experiment system, the particle and supercritical carbon dioxide based power generation system has better characteristics, so that a power generation mode of taking the particle as a high-temperature side medium and the supercritical carbon dioxide as a circulating working medium is gradually applied to the field of new generation power generation.
At present, a heat exchange experiment system for particles and supercritical carbon dioxide mainly comprises a particle flow channel and a supercritical carbon dioxide flow channel, wherein the particle flow channel is communicated with a heat exchange tank, the supercritical carbon dioxide passes through the heat exchange tank, the supercritical carbon dioxide absorbs heat of the particles to become high-temperature fluid, and the heat exchange process of the particles and the supercritical carbon dioxide is realized in the heat exchange tank.
However, the operation and control process of the current heat exchange experiment system is difficult, and the safety factor is low.
Disclosure of Invention
In order to solve at least one problem mentioned in the background art, the invention provides a particle/supercritical carbon dioxide heat exchange experiment system and a power generation experiment system, which can effectively ensure the circulating heat exchange between high-temperature particles and supercritical carbon dioxide, reduce the control difficulty in the operation process and improve the safety coefficient of the particle/supercritical carbon dioxide heat exchange experiment system and the power generation experiment system.
In order to achieve the above object, in a first aspect, the present invention provides a particle/supercritical carbon dioxide heat exchange experimental system, which includes a supercritical carbon dioxide circulation loop, a particle circulation loop and a fluidized bed.
At least part of the supercritical carbon dioxide circulation loop is positioned in the fluidized bed, the particle circulation loop is communicated with the fluidized bed, and high-temperature particles in the particle circulation loop flow through the supercritical carbon dioxide circulation loop positioned in the fluidized bed under the driving of the driving airflow of the fluidized bed so as to exchange heat between the high-temperature particles and the supercritical carbon dioxide.
In a second aspect, the invention further provides a power generation experimental system, which comprises the particle/supercritical carbon dioxide heat exchange experimental system.
According to the particle/supercritical carbon dioxide heat exchange experimental system and the power generation experimental system, the supercritical carbon dioxide circulation loop and the particle circulation loop are arranged, so that high-temperature particles and supercritical carbon dioxide are ensured to circularly flow in the system in the heat exchange process, the problems of bridging and blocking of the particles are prevented, and the safety of system operation is improved; meanwhile, the high-pressure environment and the heat exchange efficiency of the supercritical carbon dioxide are ensured. At least part of the supercritical carbon dioxide circulation loop is arranged in the fluidized bed, and the fluidized bed is utilized to realize the full contact between high-temperature particles and the supercritical carbon dioxide, so that the aim of high-efficiency heat exchange is fulfilled. Therefore, the particle/supercritical carbon dioxide heat exchange experiment system can improve the circulating heat exchange between high-temperature particles and supercritical carbon dioxide, reduce the control difficulty of the operation process and ensure the safety factors of the particle/supercritical carbon dioxide heat exchange experiment system and the power generation experiment system with the particle/supercritical carbon dioxide heat exchange experiment system.
The construction of the present invention and other objects and advantages thereof will be more apparent from the following description of the preferred embodiments taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a particle/supercritical carbon dioxide heat exchange experimental system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a supercritical carbon dioxide circulation loop of a particle/supercritical carbon dioxide heat exchange experimental system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a liquid storage tank of a particle/supercritical carbon dioxide heat exchange experimental system according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a regenerator of a particle/supercritical carbon dioxide heat exchange experimental system according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a particle circulation loop of a particle/supercritical carbon dioxide heat exchange experimental system according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a fluidized bed of a particle/supercritical carbon dioxide heat exchange experimental system according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a gas supply device of a particle/supercritical carbon dioxide heat exchange experimental system according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of an exhaust apparatus of a particle/supercritical carbon dioxide heat exchange experimental system according to an embodiment of the present invention.
Description of the reference numerals:
10-a supercritical carbon dioxide recycle loop;
11-gas storage cylinder; 12-a liquid storage tank;
12 a-a first liquid inlet; 12 b-a second inlet;
12 c-a liquid outlet; 13-a fluid buffer tank;
13 a-buffer entry; 13 b-buffer outlet;
14-a regenerator; 14 a-a first recuperation inlet;
14 b-a second recuperative inlet; 14 c-a first recuperation outlet;
14 d-a second regenerative outlet; 15-a carbon dioxide cooler;
16-heat exchange tube set; 16 a-a first port;
16 b-a second port; 17-a circulation pump;
18-a plunger pump; 19-a load valve;
101-turbine; 102-a carbon dioxide flow meter;
103-gas storage valve; 104-carbon dioxide pressure gauge;
20-a particle circulation loop;
21-a pellet heater; 21 a-inlet;
21 b-an outlet; 211-heating tube;
22-a first conveyor; 23-a second conveyor;
24-a material elevator; 24 a-a feed inlet;
24 b-a discharge port; 25-a particle thermometer;
30-a fluidized bed;
31-a gas inlet; 32-a gas outlet;
33-a particle inlet; 34-a particle outlet;
40-a gas circulation system;
41-gas supply means; 411-air supply fan;
412-gas buffer tank; 413-gas supply stop valve;
414-air supply regulating valve; 415-a gas supply flow meter;
42-an exhaust; 421-gas cooler;
422-cooling water tank; 423-cooling water regulating valve;
424-exhaust gas thermometer; 425-cooling water thermometer;
50-a control device;
51-a control cabinet; 52-control terminal.
Detailed Description
The existing heat exchange experiment system for particles and supercritical carbon dioxide mainly comprises a particle flow channel and a supercritical carbon dioxide flow channel, wherein the particle flow channel is communicated with a heat exchange tank, the supercritical carbon dioxide passes through the heat exchange tank, the supercritical carbon dioxide absorbs heat of the particles to become high-temperature fluid, and the heat exchange process of the particles and the supercritical carbon dioxide is realized in the heat exchange tank. The particle flow channel and the supercritical carbon dioxide flow channel do not have a complete circulating flow channel, so that a circulating flow process does not exist. Therefore, in the heat exchange process, the problems of particle bridging and blockage are easy to occur in the particle flow channel. And the supercritical carbon dioxide is easy to have low flow efficiency, so that the high-pressure state of the environment where the supercritical carbon dioxide is positioned can not be maintained, the supercritical state of the supercritical carbon dioxide is influenced, and the supercritical carbon dioxide is easy to leak, so that the accuracy of heat exchange is influenced. Furthermore, in the heat exchange process, the control difficulty of particles and supercritical carbon dioxide is high, so that the operation difficulty of the heat exchange experiment system is increased, and the safety coefficient is reduced.
Based on the technical problems, the particle/supercritical carbon dioxide heat exchange experimental system and the power generation experimental system provided by the invention have the advantages that by arranging the supercritical carbon dioxide circulation loop and the particle circulation loop, high-temperature particles and supercritical carbon dioxide are ensured to circularly flow in the system in the heat exchange process, the problems of bridging and blocking of the particles are prevented, and the safety of system operation is improved; and simultaneously, the high-pressure environment and the heat exchange efficiency of the supercritical carbon dioxide are ensured. At least part of the supercritical carbon dioxide circulation loop is arranged in the fluidized bed, and the fluidized bed is utilized to realize the full contact between high-temperature particles and the supercritical carbon dioxide, so that the aim of high-efficiency heat exchange is fulfilled. Therefore, the particle/supercritical carbon dioxide heat exchange experiment system can improve the circulating heat exchange between high-temperature particles and supercritical carbon dioxide, reduce the control difficulty of the operation process and ensure the safety factors of the particle/supercritical carbon dioxide heat exchange experiment system and the power generation experiment system with the particle/supercritical carbon dioxide heat exchange experiment system.
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the preferred embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are illustrative of some, but not all embodiments of the invention. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Example one
Fig. 1 is a schematic structural diagram of a particle/supercritical carbon dioxide heat exchange experimental system according to an embodiment of the present invention. Fig. 2 is a schematic structural diagram of a supercritical carbon dioxide circulation loop of a particle/supercritical carbon dioxide heat exchange experimental system according to an embodiment of the present invention. Fig. 3 is a schematic structural diagram of a liquid storage tank of the particle/supercritical carbon dioxide heat exchange experimental system according to an embodiment of the present invention. Fig. 4 is a schematic structural diagram of a regenerator of a particle/supercritical carbon dioxide heat exchange experimental system according to an embodiment of the present invention. Fig. 5 is a schematic structural diagram of a particle circulation loop of a particle/supercritical carbon dioxide heat exchange experimental system according to an embodiment of the present invention. Fig. 6 is a schematic structural diagram of a fluidized bed of a particle/supercritical carbon dioxide heat exchange experimental system according to an embodiment of the present invention. Fig. 7 is a schematic structural diagram of a gas supply device of a particle/supercritical carbon dioxide heat exchange experimental system according to an embodiment of the present invention. Fig. 8 is a schematic structural diagram of an exhaust apparatus of a particle/supercritical carbon dioxide heat exchange experimental system according to an embodiment of the present invention.
Referring to fig. 1 to 8, an embodiment of the present invention provides a particle/supercritical carbon dioxide heat exchange experimental system, including a supercritical carbon dioxide circulation loop 10, a particle circulation loop 20, and a fluidized bed 30.
At least part of the supercritical carbon dioxide circulation loop 10 is located in the fluidized bed 30, the particle circulation loop 20 is communicated with the fluidized bed 30, and high-temperature particles in the particle circulation loop 20 flow through the supercritical carbon dioxide circulation loop 10 located in the fluidized bed 30 under the driving air flow of the fluidized bed 30 so as to perform heat exchange between the high-temperature particles and the supercritical carbon dioxide.
It should be noted that, the particle/supercritical carbon dioxide heat exchange experimental system provided in this embodiment can be used for a heat exchange experiment, is used for determining the heat exchange efficiency between particles and supercritical carbon dioxide, and has an instructive effect on actual production. The particles have the advantages of wide temperature change area, high thermal stability, stable chemical performance, large heat capacity, low viscosity, low price and the like. Therefore, the particles are used as the fluid for heat transfer and heat storage, and the stability of heat exchange can be ensured. The supercritical carbon dioxide has the advantages of high heat transfer efficiency, strong working capacity, fluid-like viscosity and strong fluidity, so that the supercritical carbon dioxide can transfer larger energy in a very small volume as a heat exchange working medium.
In order to ensure stable heat exchange between the particles and the supercritical carbon dioxide, a supercritical carbon dioxide circulation loop 10 and a particle circulation loop 20 are provided in the embodiment. The supercritical carbon dioxide circulation loop 10 can realize the circulation flow of the supercritical carbon dioxide, ensure the high-pressure environment of the supercritical carbon dioxide, and maintain the supercritical state of the supercritical carbon dioxide, so as to ensure the accuracy of the heat exchange efficiency. This granule circulation loop 20 can realize granule circulation flow, avoids the granule to appear bridging and the problem of jam in the flow process, prevents to take place the problem that the pipeline broke or explode because of the granule blocks up, has improved this heat transfer experimental system's safety in utilization.
Further, in order to ensure efficient heat exchange between the particles and the supercritical carbon dioxide, at least part of the supercritical carbon dioxide circulation loop 10 is arranged in the fluidized bed 30, the particle circulation loop 20 is communicated with the fluidized bed 30, the particle circulation loop 20 flows in the fluidized bed 30 and is in contact with the supercritical carbon dioxide circulation loop 10 in the fluidized bed 30, so that heat exchange between the particles and the supercritical carbon dioxide occurs, and the heat exchange process is mainly realized by heat exchange between the supercritical carbon dioxide and the particles on the wall of the pipeline of the supercritical carbon dioxide circulation loop 10.
Further, as shown in fig. 1, 7 and 8, the particle/supercritical carbon dioxide heat exchange experimental system further includes a gas circulation system 40, the gas circulation system 40 includes a gas supply device 41 and a gas exhaust device 42, the gas supply device 41 and the gas exhaust device 42 are respectively communicated with different positions of the fluidized bed 30, and form a driving gas flow in the fluidized bed 30.
It should be noted that, in the process of heat exchange between the particles based on high temperature and the supercritical carbon dioxide, the particles need to contact the supercritical carbon dioxide circulation loop 10 to realize heat exchange, so that a driving airflow needs to be formed in the fluidized bed 30 to ensure that the particles are driven by the driving airflow to continuously float upwards, and descend under the action of gravity, and fully contact the supercritical carbon dioxide circulation loop 10 in the processes of ascending and descending. The above-mentioned driving gas flow is supplied from the gas circulation system 40, wherein the flow rate of the gas flow in the fluidized bed 30 affects the heat exchange process, so to ensure the flow rate of the gas flow, the present embodiment is respectively provided with the gas supply device 41 and the gas exhaust device 42 to ensure the accurate supply of the gas flow and to ensure that the exhaust gas flow meets the emission standard.
Specifically, referring to fig. 5 and 6, the pellet circulation circuit 20 includes a pellet heater 21, a first conveyor 22, a second conveyor 23, and a material elevator 24; the fluidized bed 30 includes a particle inlet 33 and a particle outlet 34.
The outlet 21b of the particle heater 21 is connected with the particle inlet 33 through the first conveyor 22, the particle outlet 34 is connected with the feeding port 24a of the material elevator 24 through the second conveyor 23, and the discharging port 24b of the material elevator 24 is connected with the inlet 21a of the particle heater 21.
It should be noted that the first conveyor 22 and the second conveyor 23 may be screw conveyors, and the screw conveyors may drive the particles therein to move forward in the conveying direction during the rotation process, and in practical use, the first conveyor 22 and the second conveyor 23 may also be conveyor belts, conveyor chain plates, and the like, which is not limited in this embodiment. The inlet 21a of the particle heater 21 can be positioned at the top of the particle heater 21, the outlet 21b of the particle heater 21 can be positioned at the bottom of the particle heater 21, particles entering from the inlet 21a can fall to the outlet 21b under the action of gravity, and heating is completed in the falling process, so that the difficulty of simultaneously realizing particle heating and conveying can be reduced, and the heating efficiency is improved.
Wherein, the particle inlet 33 and the particle outlet 34 of the fluidized bed 30 can be located near the bottom of the fluidized bed 30, the particles near the bottom can float to the top of the fluidized bed 30 under the action of the driving gas flow and fall to the bottom of the fluidized bed 30 again under the action of gravity, and the fluidization process of the particles can form a bubbling bed state.
Meanwhile, in order to ensure that the particles output from the particle outlet 34 of the fluidized bed 30 are returned to the inlet 21a of the particle heater 21, a material elevator 24 is disposed between the second conveyor 23 and the inlet 21a of the particle heater 21, and the material elevator 24 may be a bucket elevator. The second conveyor 23 conveys the granules to the bottom of the material elevator 24, and the material elevator 24 conveys the granules at the bottom to the top to re-lift the granules output near the bottom of the fluidized bed 30 to the inlet 21a of the granule heater 21.
Wherein, the inlet 21a of the particle heater 21 is higher than the outlet 21b of the particle heater 21, a plurality of heating pipes 211 are arranged in the particle heater 21, the heating pipes 211 extend along the horizontal direction, and the plurality of heating pipes 211 are arranged in the particle heater 21 at intervals along the vertical direction. The particles to be heated, which enter the particle heater 21 through the inlet 21a, fall by gravity, pass through the plurality of heating pipes 211 to form high-temperature particles, and are discharged through the outlet 21 b.
It should be noted that the pellet heater 21 may be used to heat and store pellets, and the pellets may contact a plurality of heating pipes 211 while falling from the inlet 21a to the outlet 21b, and the heating pipes 211 may heat the pellets. Meanwhile, the stacking height of the particles in the particle heater 21 may be higher than the height of the heating pipe 211, that is, the heating pipe 211 is buried in the particles to achieve heating of the particles. The heating tube 211 may be electrically heated or may be derived from a solar heat sink.
Referring to fig. 2 to 4, the supercritical carbon dioxide circulation loop 10 includes a gas bomb 11, a liquid storage tank 12, a fluid buffer tank 13, a regenerator 14, a carbon dioxide cooler 15, and a heat exchange tube bank 16, the heat exchange tube bank 16 being located in a fluidized bed 30.
The gas storage cylinder 11 is communicated with a first liquid inlet 12a of the liquid storage tank 12, a liquid outlet 12c of the liquid storage tank 12 is communicated with a buffer inlet 13a of a fluid buffer tank 13, a buffer outlet 13b of the fluid buffer tank 13 is communicated with a first heat recovery inlet 14a of a heat regenerator 14, a first heat recovery outlet 14c of the heat regenerator 14 is communicated with a first port 16a of a heat exchange tube set 16, a second port 16b of the heat exchange tube set 16 is communicated with a second heat recovery inlet 14b of the heat regenerator 14, a second heat recovery outlet 14d of the heat regenerator 14 is communicated with a cooling inlet of a carbon dioxide cooler 15, and a cooling outlet of the carbon dioxide cooler 15 is communicated with a second liquid inlet 12b of the liquid storage tank 12.
Further, the supercritical carbon dioxide recycle loop 10 includes a recycle pump 17, a plunger pump 18, a load valve 19, and a turbine 101. The circulating pump 17 is connected between the liquid storage tank 12 and the fluid buffer tank 13, the plunger pump 18 is connected between the gas storage cylinder 11 and the liquid storage tank 12, the load valve 19 is connected between the fluid buffer tank 13 and the regenerator 14, and the turbine 101 is connected between the second port 16b of the heat exchange tube set 16 and the second regenerative inlet 14b of the regenerator 14.
Note that the supercritical carbon dioxide at low temperature and low pressure is stored in the gas bomb 11, and the storage safety of the supercritical carbon dioxide can be ensured in the low temperature and low pressure storage state. The low-temperature and low-pressure supercritical carbon dioxide enters the liquid storage tank 12 through a first liquid inlet 12a of the liquid storage tank 12, enters the circulating pump 17 from a liquid outlet 12c of the liquid storage tank 12, is compressed to form high-pressure and low-temperature supercritical carbon dioxide, then enters the fluid buffer tank 13, passes through the steady flow effect of the fluid buffer tank 13, and enters the heat regenerator 14 through a first heat recovery inlet 14a of the heat regenerator 14 under the pressure protection effect of the load valve 19.
The high-pressure low-temperature supercritical carbon dioxide and the second regenerative inlet 14b enter the low-pressure high-temperature supercritical carbon dioxide for heat convection, and then the medium-temperature high-pressure supercritical carbon dioxide is formed, flows out from the first regenerative outlet 14c, and enters the heat exchange tube bank 16 from the first port 16a of the heat exchange tube bank 16.
After the medium-temperature high-pressure supercritical carbon dioxide in the heat exchange tube set 16 exchanges heat with the high-temperature particles passing through the particle heater 21, high-temperature high-pressure supercritical carbon dioxide is formed and flows out from the second port 16b of the heat exchange tube set 16.
The high-temperature high-pressure supercritical carbon dioxide enters the turbine 101, drives the turbine 101 to move and work and consumes pressure, and forms low-pressure high-temperature supercritical carbon dioxide. This low pressure high temperature supercritical carbon dioxide can get into regenerator 14 by second backheating entry 14b in, can carry out the heat convection with the high pressure microthermal supercritical carbon dioxide that gets into by first backheating entry 14a, forms low temperature low pressure supercritical carbon dioxide afterwards to get into carbon dioxide cooler 15, accomplish the cooling process after, flow back to liquid storage pot 12 in by the second inlet 12b of liquid storage pot 12, accomplish the circulation of supercritical carbon dioxide.
It should be noted that the temperatures and pressures in the above-mentioned supercritical carbon dioxide of high temperature and high pressure, medium temperature and high pressure, low pressure and high temperature, high pressure and low temperature and low pressure are all temperatures and pressures which can be sufficient to maintain the supercritical state of the supercritical carbon dioxide. Wherein the high temperature, the low temperature, the medium temperature, the high pressure and the low pressure are relative indexes.
Referring to fig. 7, the gas supply device 41 includes a gas supply fan 411, a gas buffer tank 412, a gas supply shutoff valve 413, and a gas supply adjustment valve 414. The outlet of the gas supply fan 411 is communicated with the inlet of the gas buffer tank 412, and the outlet of the gas buffer tank 412 is communicated with the gas inlet 31 of the fluidized bed 30. The gas supply cutoff valve 413 and the gas supply adjustment valve 414 are connected at different positions between the gas buffer tank 412 and the fluidized bed 30, respectively.
It should be noted that the air supply fan 411 generates a certain amount of air and enters the air buffer tank 412, and the air buffer tank 412 stabilizes the flow of the air and then passes through the air supply stop valve 413 and the air supply regulating valve 414 in sequence. The supply air stop valve 413 can control the on-off of the supply air flow, and the supply air regulating valve 414 can control the flow rate and the flow rate of the supply air flow.
Further, referring to fig. 8, the exhaust device 42 includes a gas cooler 421, a cooling water tank 422, and a cooling water adjustment valve 423. The gas outlet 32 of the fluidized bed 30 communicates with the gas cooler 421, the cooling water tank 422 communicates with the gas cooler 421, and the cooling water adjustment valve 423 is connected between the cooling water tank 422 and the gas cooler 421.
It should be noted that the gas cooler 421 in the exhaust device 42 can cool the gas flowing out of the fluidized bed 30 to meet the emission standard. The gas cooler 421 may perform cooling by cooling water. The cooling water adjustment valve 423 may adjust the flow rate and flow rate of the cooling water entering the gas cooler 421, thereby controlling the cooling effect.
On the basis of the structure of the particle/supercritical carbon dioxide heat exchange experimental system, the control device 50 and the detection component are further arranged in the heat exchange experimental system in the embodiment, so as to realize the controllability of the heat exchange process of the heat exchange experimental system. The control device 50 may include a control cabinet 51 and a control terminal 52 electrically connected to each other, where the control cabinet 51 may be electrically connected to the control terminal 52 through a cable, and the two may also be electrically connected in a wireless manner. The control cabinet 51 can be arranged on the operation site of the heat exchange experiment system, and the control terminal 52 can be any electronic equipment capable of realizing related control functions, such as a computer, a mobile phone and the like.
The detection assembly may include a carbon dioxide flow meter 102, a gas storage valve 103 and a carbon dioxide pressure gauge 104 disposed in the supercritical carbon dioxide circulation loop 10, wherein the carbon dioxide flow meter 102, the gas storage valve 103, the carbon dioxide pressure gauge 104, the circulation pump 17, the plunger pump 18 and the load valve 19 are all electrically connected to the control device 50.
In the heat exchange process, the detection assembly and the control device 50 work together to control the supercritical carbon dioxide supply process. In the initial state of the heat exchange experiment system, the gas storage valve 103 is opened, and the supercritical carbon dioxide in the gas storage cylinder 11 is charged into the supercritical carbon dioxide circulation loop 10 through the plunger action of the plunger pump 18. The pressure value in the supercritical carbon dioxide circulation circuit 10 is detected by the carbon dioxide pressure gauge 104. When the pressure value reaches a preset pressure value, the gas storage valve 103 may be closed, and then the circulation pump 17 may be opened, so that the supercritical carbon dioxide is circulated. Wherein carbon dioxide flow meter 102 can monitor the flow of supercritical carbon dioxide into regenerator 14.
The detection assembly may further include a pellet thermometer 25 disposed in the pellet circulation loop 20, the pellet thermometer 25 being disposed at an outlet of the pellet heater 21, the pellet thermometer 25, the pellet heater 21, the first conveyor 22, the second conveyor 23, and the material elevator 24 being electrically connected to the control device 50.
In the particle supply process, the temperature of the particles affects the whole heat exchange process, so that the actual temperature of the particles can be monitored by the particle thermometer 25 located at the outlet of the particle heater 21, the actual temperature of the particles is compared with the preset temperature of the particles, and a variable frequency controller can be arranged in the power supply circuit of the heating pipe 211, and the electric power of the heating pipe 211 is regulated and controlled by the variable frequency controller, so that the temperature of the particles is regulated and controlled to reach the preset temperature. In the adjustment process, when the actual temperature of granule and preset the temperature when great, can increase the maximum value with the electric power of heating pipe 211, when the actual temperature of granule is close to when presetting the temperature gradually, can reduce the electric power of heating pipe 211 gradually, until the actual temperature of granule is stable and equals to and presets the temperature, realize the unsteady regulation and the feedback regulation mechanism of granule heating temperature, guarantee the accuracy that adjusts the temperature, reduce the degree of difficulty that adjusts the temperature.
Further, the control device 50 may also control the operations of the first conveyor 22, the second conveyor 23, and the material elevator 24, and regulate and control the rotation speeds of the first conveyor 22, the second conveyor 23, and the material elevator 24 according to the relationship between the calibrated flow rate and the calibrated rotation speed, so that the actual rotation speed values of the three are equal to the preset rotation speed value, and the circulation of the particles is realized.
The detecting assembly may further include a gas supply flow meter 415 disposed in the gas supply device 41, and the gas supply flow meter 415, the gas supply fan 411, the gas supply stop valve 413 and the gas supply regulating valve 414 are all electrically connected to the control device 50.
It should be noted that the air supply flow meter 415 can monitor the flow rate of air entering the fluidized bed 30, and when the heat exchange starts, the air supply stop valve 413 and the air supply fan 411 can be opened, and the opening of the air supply regulating valve 414 is changed in combination with the flow rate signal fed back by the air flow meter, so that the actual air flow rate in the fluidized bed 30 reaches the preset air flow rate.
The detection assembly may further include an exhaust thermometer 424 and a cooling water thermometer 425 disposed in the exhaust device 42, the exhaust thermometer 424, the cooling water thermometer 425, and a cooling water adjustment valve 423 all electrically connected to the control device 50.
It should be noted that the exhaust gas thermometer 424 may monitor the temperature of the exhaust gas, and the cooling water thermometer 425 may monitor the temperature of the cooling water of the exhaust gas cooler 421. During the exhaust process, the opening degree of the cooling water adjusting valve 423 may be controlled such that the temperature of the exhaust gas is less than 50 ℃ and the temperature of the exhaust cooling water is less than 50 ℃ based on temperature information fed back from the exhaust thermometer 424 and the cooling water thermometer 425. In practical use, the temperature standard values of the exhaust gas and the exhaust cooling water can be set according to needs, and the embodiment does not limit this.
Further, a carbon dioxide thermometer is disposed in the supercritical carbon dioxide cycle loop 10, and the carbon dioxide thermometer may be located at the first regenerative inlet 14a, the first regenerative outlet 14c, the second regenerative outlet 14d, and the second port 16b of the heat exchange tube bank 16 (not labeled in the figure). The carbon dioxide thermometer may be electrically connected to the control device 50 to monitor the temperature of the supercritical carbon dioxide.
In the experimental process, the supercritical carbon dioxide circulation circuit 10 is first opened, and the pressure in the supercritical carbon dioxide circulation circuit 10 is adjusted to a preset pressure. The particle circulation loop 20 is then opened so that the particle flow in the fluidized bed 30 reaches a preset value. Then, the gas supply device 41 in the gas circulation system 40 is turned on to make the gas supply flow rate reach the preset value. Which in turn opens the exhaust 42 in the gas circulation system 40. The temperature of the granules in the fluidized bed 30 is controlled by adjusting the electric power of the heating pipe 211 to gradually increase the temperature of the granules. The flow of cooling water in the exhaust unit 42 is adjusted simultaneously with the adjustment of the particle temperature so that the exhaust gas and the exhaust cooling water both meet the emission standards.
Wherein, when the outlet temperature of the pellet heater 21 reaches a constant value, the system is considered to be stable, and experimental data is recorded; after the recording is completed, the heating electric power of the pellet heater 21 is returned to zero. When the outlet temperature of the pellet heater 21 reaches the room temperature, the pellet circulation circuit 20 is closed, the cooling water adjusting valve 423 is closed, the air supply adjusting valve 414 and the air supply shutoff valve 413 are closed in this order. When the temperature in the supercritical carbon dioxide circulation loop 10 reaches the room temperature, the circulation pump 17 of the supercritical carbon dioxide circulation loop 10 is closed, and the experiment is ended.
In this embodiment, by controlling the flow rate of particles in the particle circulation loop 20, fluidization of particles can be ensured, and bridging and blocking problems can be prevented. The supercritical state of the supercritical carbon dioxide is ensured by adjusting the pressure and temperature in the supercritical carbon dioxide circulation circuit 10. Through monitoring feedback and adjusting particle flow, supercritical carbon dioxide flow, gas supply flow, cooling water flow in coordination, the pressure fluctuation in the pipeline in the whole heat exchange experiment system can be avoided too big, the leakage and damage accidents of experiment pipelines or equipment are prevented from being caused, and the experiment safety is improved.
Further, the particle/supercritical carbon dioxide heat exchange experimental system can be used as an experimental system for heat exchange between particles and supercritical carbon dioxide. Table 1 is a table of control parameters of the particle/supercritical carbon dioxide heat exchange experimental system, and table 2 is a table of experimental results of the particle/supercritical carbon dioxide heat exchange experimental system. In the experimental process, the experimental results in table 2 can be obtained by adjusting the regulation and control parameters shown in table 1, so as to achieve the purpose of researching the heat exchange process of the particle/supercritical carbon dioxide heat exchange experimental system. Wherein, the superficial gas velocity in table 1 may be a gas flow velocity at the gas inlet 31 of the fluidized bed 30, the particle flow rate may be a flow rate at the particle inlet 33 of the fluidized bed 30, the particle inlet temperature may be a temperature at the particle inlet 33 of the fluidized bed 30, the particle outlet temperature may be a temperature at the particle outlet 34 of the fluidized bed 30, and the bed average temperature may be a temperature in the fluidized bed 30, and the temperature detection may be achieved by providing a temperature detection device inside the fluidized bed 30.
Supercritical CO 2 The outlet pressure may be the pressure at the first port 16a of the heat exchange tube bank 16, supercritical CO 2 The outlet temperature may be a temperature value of the first port 16a, correspondingly, supercritical CO 2 The outlet enthalpy value may be the enthalpy value of the first port 16 a. Supercritical CO 2 The flow rate may be a flow rate in the supercritical carbon dioxide recycle loop.
Further, supercritical CO 2 The inlet pressure may be the pressure at the second port 16b of the heat exchange bank 16, supercritical CO 2 The inlet temperature may be a temperature value of the second port 16b, correspondingly, supercritical CO 2 The inlet enthalpy may be the enthalpy of the second port 16 b.
Wherein, the heat exchange area is the cross-sectional area of the heat exchange tube set 16, and the heat exchange area can be calculated by the following formula one:
S＝πr 2 l formula one
In the formula I, S is a heat exchange area; unit is m 2 (ii) a r is the radius of the pipeline in the heat exchange tube group 16, and the unit is m; and L is the length of the pipeline in the heat exchange tube group 16 and is m.
Wherein, supercritical CO 2 The heat absorption can be calculated by the following equation two:
in the formula II, the first step is carried out,
is supercritical CO 2 Heat absorption capacity in kW;
the mass flow rate at the first port 16a in the heat exchange tube group 16 is expressed in kg/s; h is out Is the enthalpy value at the first port 16a in the heat exchange tube bank 16, and the unit is kJ/kg; h is a total of in Is the enthalpy at the second port 16b in the heat exchange tube bank 16, and has the unit of kJ/kg.
Wherein, the particle heat release can be calculated by the following formula three:
in the third formula, Q p Is the heat release of the particles in kW;
is the particle flow rate of the particle circulation loop 20 in kg/s; c. C p,in Particle heat capacity at particle inlet 33 in units of J/(kg. DEG. C); c. C p,out The heat capacity of the particles at the particle outlet 34, in units of J/(kg. DEG C); t is t p,in Is the pellet temperature at pellet inlet 33 in units of; t is t p,out Is the temperature of the particles at the particle outlet 34 in degrees celsius.
Referring to table 2, the heat transfer coefficient in table 2 can be calculated by the following equation four:
in the fourth formula, eta is the heat transfer coefficient and has the unit of K/(W/m) 2 K)；Q p Is the heat release of the particles in kW;
is supercritical CO 2 The heat absorption capacity is kW.
Wherein, the heat exchange efficiency can be obtained by calculating according to a formula five:
in the fifth formula, K is the heat exchange efficiency; delta T m For logarithmic temperature difference, the logarithmic temperature difference can be calculated by the following formula six:
in the sixth equation,. DELTA.t max Represents
And
middle and large, Δ t min Represents
And
the smaller of the two. Wherein, t CO2,out Is the temperature at the first port 16a in the heat exchange tube bank 16, and is expressed in units of ℃; t is t CO2,in To the temperature at the second port 16b in the heat exchange tube bank 16,the unit is ℃.
TABLE 1 Regulation and control parameter table of particle/supercritical carbon dioxide heat exchange experiment system
TABLE 2 Experimental results table of particle/supercritical carbon dioxide heat exchange experimental system
| Results of the experiment | Working condition 1 | Working condition 2 | Working condition 3 | Working condition 4 | Working condition 5 |
| Coefficient of heat transfer (K/(W/m) 2 K)) | 606.14 | 662.28 | 604.13 | 643.08 | 638.49 |
| Efficiency of heat exchange | 0.69 | 0.71 | 0.71 | 0.72 | 0.66 |
Example two
On the basis of the first embodiment, the second embodiment of the invention provides a power generation experimental system, which comprises the particle/supercritical carbon dioxide heat exchange experimental system.
Specifically, the power generation experiment system may be a solar power generation experiment system, that is, a solar heat absorber may be further disposed in the particle/supercritical carbon dioxide heat exchange experiment system, the solar heat absorber may provide heating power for the heating pipe 211, or the particle heater 21 is replaced by the solar heat absorber, the solar heat absorber is provided with a particle inlet 33 and a particle outlet 34, and the particles are heated in the solar heat absorber.
Further, a power generation device can be further arranged in the particle/supercritical carbon dioxide heat exchange experimental system, and the power generation device can be arranged between the heat exchange tube group 16 and the turbine 101 and can generate power by using high-temperature and high-pressure supercritical carbon dioxide.
Other technical features are the same as those of the first embodiment and can achieve the same technical effects, and are not repeated herein.
According to the power generation experimental system provided by the invention, the supercritical carbon dioxide circulation loop and the particle circulation loop are arranged in the particle/supercritical carbon dioxide heat exchange experimental system, so that high-temperature particles and supercritical carbon dioxide are ensured to circularly flow in the system in the heat exchange process, the problems of bridging and blocking of the particles are prevented, and the safety of system operation is improved; and simultaneously, the high-pressure environment and the heat exchange efficiency of the supercritical carbon dioxide are ensured. At least part of the supercritical carbon dioxide circulation loop is arranged in the fluidized bed, and the fluidized bed is utilized to realize the full contact between high-temperature particles and the supercritical carbon dioxide, so that the aim of high-efficiency heat exchange is fulfilled. Therefore, the particle/supercritical carbon dioxide heat exchange experiment system can improve the circulating heat exchange between high-temperature particles and supercritical carbon dioxide, reduce the control difficulty of the operation process and ensure the safety factors of the particle/supercritical carbon dioxide heat exchange experiment system and the power generation experiment system with the particle/supercritical carbon dioxide heat exchange experiment system.
In the description of the present invention, it should be noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, an indirect connection through intervening media, a connection between two elements, or an interaction between two elements. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art. The terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, and are intended to be used only for convenience in describing and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular orientation, and therefore, should not be construed as limiting the invention. In the description of the present invention, "a plurality" means two or more unless specifically stated otherwise.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A particle/supercritical carbon dioxide heat exchange experimental system is characterized by comprising a supercritical carbon dioxide circulation loop, a particle circulation loop and a fluidized bed;
at least part of the supercritical carbon dioxide circulation loop is positioned in the fluidized bed, the particle circulation loop is communicated with the fluidized bed, and high-temperature particles in the particle circulation loop flow through the supercritical carbon dioxide circulation loop positioned in the fluidized bed under the driving of the fluidized bed so as to exchange heat between the high-temperature particles and the supercritical carbon dioxide.
2. The particle/supercritical carbon dioxide heat exchange experimental system according to claim 1, further comprising a gas circulation system, wherein the gas circulation system comprises a gas supply device and a gas exhaust device, the gas supply device and the gas exhaust device are respectively communicated with different positions of the fluidized bed, and form a driving gas flow in the fluidized bed.
3. The particle/supercritical carbon dioxide heat exchange experimental system of claim 2 wherein the particle circulation loop comprises a particle heater, a first conveyor, a second conveyor and a material elevator; the fluidized bed comprises a particle inlet and a particle outlet;
the outlet of the particle heater is connected with the particle inlet through a first conveyor, the particle outlet is connected with the feeding port of the material elevator through a second conveyor, and the discharge port of the material elevator is connected with the inlet of the particle heater.
4. The particle/supercritical carbon dioxide heat exchange experimental system according to claim 3, wherein the inlet of the particle heater is higher than the outlet of the particle heater, a plurality of heating pipes are arranged in the particle heater, the heating pipes extend along the horizontal direction, and the plurality of heating pipes are arranged in the particle heater at intervals along the vertical direction;
the particles to be heated entering the particle heater through the inlet fall under the action of gravity, form high-temperature particles after passing through the heating pipes, and are discharged from the outlet.
5. The particle/supercritical carbon dioxide heat exchange experimental system according to claim 4, wherein the supercritical carbon dioxide circulation loop comprises a gas storage cylinder, a liquid storage tank, a fluid buffer tank, a heat regenerator, a carbon dioxide cooler and a heat exchange tube set, and the heat exchange tube set is located in the fluidized bed;
the gas storage bottle is communicated with a first liquid inlet of the liquid storage tank, a liquid outlet of the liquid storage tank is communicated with a buffer inlet of the fluid buffer tank, a buffer outlet of the fluid buffer tank is communicated with a first heat recovery inlet of the heat regenerator, a first heat recovery outlet of the heat regenerator is communicated with a first port of the heat exchange tube set, a second port of the heat exchange tube set is communicated with a second heat recovery inlet of the heat regenerator, a second heat recovery outlet of the heat regenerator is communicated with a cooling inlet of the carbon dioxide cooler, and a cooling outlet of the carbon dioxide cooler is communicated with a second liquid inlet of the liquid storage tank.
6. The particle/supercritical carbon dioxide heat exchange experimental system according to claim 5, wherein the supercritical carbon dioxide circulation loop comprises a circulation pump, a plunger pump, a load valve and a turbine;
the circulating pump is connected between the liquid storage tank and the fluid buffer tank, the plunger pump is connected between the gas storage cylinder and the liquid storage tank, the load valve is connected between the fluid buffer tank and the heat regenerator, and the turbine is connected between a second port of the heat exchange tube set and a second regenerative inlet of the heat regenerator.
7. The particle/supercritical carbon dioxide heat exchange experimental system according to claim 6, wherein the gas supply device comprises a gas supply fan, a gas buffer tank, a gas supply stop valve and a gas supply regulating valve;
the outlet of the gas supply fan is communicated with the inlet of the gas buffer tank, and the outlet of the gas buffer tank is communicated with the gas inlet of the fluidized bed;
the gas supply stop valve with the gas supply regulating valve is connected respectively the gas buffer tank with different positions between the fluidized beds.
8. The particle/supercritical carbon dioxide heat exchange experimental system according to claim 7, wherein the exhaust device comprises a gas cooler, a cooling water tank and a cooling water regulating valve;
the gas outlet of the fluidized bed is communicated with a gas cooler, the cooling water tank is communicated with the gas cooler, and the cooling water regulating valve is connected between the cooling water tank and the gas cooler.
9. The particle/supercritical carbon dioxide heat exchange experimental system according to claim 8, further comprising a control device;
the supercritical carbon dioxide circulation loop comprises a carbon dioxide flow meter, an air storage valve and a carbon dioxide pressure gauge, and the carbon dioxide flow meter, the air storage valve, the carbon dioxide pressure gauge, the circulating pump, the plunger pump and the load valve are all electrically connected with the control device;
the particle circulating loop comprises a particle thermometer, the particle thermometer is arranged at an outlet of the particle heater, and the particle thermometer, the particle heater, the first conveyor, the second conveyor and the material lifter are all electrically connected with the control device;
the air supply device comprises an air supply flow meter, and the air supply flow meter, the air supply fan, the air supply stop valve and the air supply regulating valve are electrically connected with the control device;
the exhaust device comprises an exhaust thermometer and a cooling water thermometer, and the exhaust thermometer, the cooling water thermometer and the cooling water regulating valve are all electrically connected with the control device.
10. An electricity generation experimental system, characterized by comprising the particle/supercritical carbon dioxide heat exchange experimental system according to any one of claims 1 to 9.
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