WO2018212046A1 - Dispositif de collecte de chaleur solaire doté d'un lit fluidisé, et procédé de collecte de chaleur solaire l'utilisant - Google Patents

Dispositif de collecte de chaleur solaire doté d'un lit fluidisé, et procédé de collecte de chaleur solaire l'utilisant Download PDF

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Publication number
WO2018212046A1
WO2018212046A1 PCT/JP2018/018005 JP2018018005W WO2018212046A1 WO 2018212046 A1 WO2018212046 A1 WO 2018212046A1 JP 2018018005 W JP2018018005 W JP 2018018005W WO 2018212046 A1 WO2018212046 A1 WO 2018212046A1
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Prior art keywords
particles
fluidized bed
heat collecting
flow
solar heat
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PCT/JP2018/018005
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English (en)
Japanese (ja)
Inventor
幸治 松原
篤 櫻井
竜也 兒玉
展之 郷右近
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国立大学法人 新潟大学
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Priority to JP2019519197A priority Critical patent/JP7061809B2/ja
Publication of WO2018212046A1 publication Critical patent/WO2018212046A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/46—Gasification of granular or pulverulent flues in suspension
    • C10J3/54—Gasification of granular or pulverulent fuels by the Winkler technique, i.e. by fluidisation
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/46—Gasification of granular or pulverulent flues in suspension
    • C10J3/54—Gasification of granular or pulverulent fuels by the Winkler technique, i.e. by fluidisation
    • C10J3/56—Apparatus; Plants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00—Solar heat collectors using working fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00—Solar heat collectors specially adapted for particular uses or environments
    • F24S20/20—Solar heat collectors for receiving concentrated solar energy, e.g. receivers for solar power plants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00—Solar heat collectors specially adapted for particular uses or environments
    • F24S20/30—Solar heat collectors for heating objects, e.g. solar cookers or solar furnaces
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/44—Heat exchange systems

Definitions

  • the present invention relates to a two-column fluidized bed sandwiched between two loop seals, and more specifically, a solar equipped with a fluidized bed that can be used for various chemical reactions such as solar heat storage, solar fuelization, and biomass gasification.
  • the present invention relates to a light heat collecting apparatus and a solar heat collecting method using the same.
  • the present inventors have proposed a hydrothermal decomposition apparatus and a solar heat storage apparatus equipped with a fluidized bed that can generate internal circulation internally (see Patent Documents 1 and 2).
  • Patent Document 1 As shown in FIG. 7, a two-column fluidized bed 103 is provided in the hydrothermal decomposition apparatus 100, and the metal oxide particles P are internally circulated between the columns 101 and 102. 101 is used as a thermal reduction reactor, and the other column 102 is used as a hydrothermal decomposition (oxidation) reactor.
  • Patent Document 1 is a system that generates all of the above two reactions (reduction and oxidation) in one two-column fluidized bed 103, and the two reactions cannot be completely separated. It was difficult to achieve higher efficiency.
  • the present inventors have disclosed a solar heat storage device having a fluidized bed having a structure different from that of Patent Document 1 in Patent Document 2, and in particular, Patent Document in order to perform large-scale heat collection and heat storage.
  • Example 3 of 2 (and also corresponding drawing 4), a technique for separating the heat collection container and the heat storage container and circulating the heat storage particles between these containers is disclosed.
  • the present invention has been made in view of such circumstances, and an object of the present invention is to provide a solar heat collecting fluidized bed capable of efficiently realizing the internal circulation flow and the external circulation flow of particles.
  • the present invention has, for example, the following configurations and features.
  • a solar heat collecting apparatus including a heat collecting container provided with a fluidized bed, an irradiation part, and a gas introduction part,
  • the fluidized bed is partitioned by first and second openings provided in the heat collecting container, a first partition plate provided between the first and second openings, and a first partition plate.
  • the first and second fluid spaces connected to the first and second openings, and the particles in the first and second fluid spaces
  • the irradiation unit includes a window provided in the heat collecting container, and through the window, guides the collected sunlight and irradiates the particles.
  • the gas introduction part includes a first dispersion plate provided in the fluidized bed, and first and second introduction ports for introducing gas into the first and second fluid spaces through the first dispersion plate, and By making the linear velocity of the gas introduced from the first inlet to the first fluid space different from the linear velocity of the gas introduced from the second inlet to the second fluid space, the first fluid space and the second fluid space are Generating an internal circulation flow of the particles between,
  • the heat collection container further includes at least one of a particle introduction port and a particle discharge port for introducing and discharging the particles, and first and second loop seal portions connected to the fluidized bed, The first loop seal portion connects the particle inlet and the first flow space to supply the particles to the first flow space, The second loop seal portion connects the second fluid space and the particle outlet, and supplies the particles in the second fluid space to the particle outlet.
  • the heat collecting container is provided with both first and second loop seal portions, A first loop seal is provided on one side of the fluidized bed; and The solar heat collecting apparatus according to aspect 1, wherein the second loop seal portion is provided on the other side of the fluidized bed.
  • the solar collector according to aspect 2 wherein the window of the irradiation unit is provided in an upper part of the heat collecting container, and a first dispersion plate of the gas introduction unit is provided in a lower part of the fluidized bed.
  • Thermal device. (Aspect 4)
  • the first loop seal portion includes a lower opening, a second partition plate extending upward from the lower opening, and third and fourth flows connected to each other at the lower opening while being partitioned by the second partition plate.
  • By connecting the particle introduction port to the upper part of the third flow space new particles are introduced from the outside of the heat collecting container into the first loop seal portion, and passed through the third and fourth flow spaces and the seal outlet.
  • the second loop seal portion includes an upper opening, a third partition plate extending downward from the upper opening, and fifth and sixth flows connected to each other at the upper opening while being partitioned by the third partition plate.
  • a seal inlet provided in a lower portion of the fifth fluid space and connected to the second fluid space, further comprising a space, a second wall that divides the fifth fluid space and the second fluid space of the fluidized bed, Further comprising By connecting the particle discharge port to the lower part of the sixth fluid space, the particles circulated in the fluidized bed are introduced into the second loop seal part from the seal inlet, and the fifth and sixth fluid spaces are passed through.
  • the solar heat collecting apparatus according to aspect 3 or 4, wherein the solar heat collecting apparatus is discharged from the particle discharge port to the outside of the heat collecting container.
  • the gas introduction part is A second dispersion plate provided at a lower portion of the first loop seal portion; Third and fourth inlets for introducing gas into the third and fourth flow spaces through the second dispersion plate;
  • the gas introduction part is A third dispersion plate provided at a lower portion of the second loop seal portion; A fifth inlet for introducing gas into the fifth flow space through the third dispersion plate;
  • the solar heat collecting apparatus is further provided with first and second transport paths and a heat storage container, and The first transport path is capable of communicating the particle discharge port and the heat storage container to transport the particles from the heat collection container to the heat storage container,
  • the second transport path is configured to communicate the heat storage container and the particle introduction port so that the particles can be transported from the heat storage container to the heat collection container.
  • Solar heat collector (Aspect 9) 9. The solar heat collecting apparatus according to any one of aspects 2 to 8, wherein at least one kind selected from the group consisting of quartz sand, iron oxide, and silicon carbide is selected as the particles. (Aspect 10) Metal oxide particles are selected as the particles, and A gas capable of reducing the particles is selected as the gas supplied from the gas introduction unit; The solar heat collecting apparatus according to any one of embodiments 2 to 8, wherein the heat collecting container is used as a thermal reduction reactor for hydrothermal decomposition. (Aspect 11) Coal coke particles and fluid medium particles are selected as the particles, and The water vapor is selected as the gas supplied from the gas introduction unit, and the heat collection container is used as a reactor for gasifying coal coke particles. Solar heat collector.
  • a solar heat collecting method using the solar heat collecting apparatus Pre-filling the fluidized bed and the first and second loop seals with the particles, Gas is introduced into the first and second flow spaces from the gas introduction part via the first dispersion plate, The particles are newly introduced from the particle inlet connected to the first group seal part, Discharging the particles from the particle outlet connected to the second group seal, An internal circulation flow of the particles is generated between the first flow space and the second flow space by setting different linear velocities of the gas introduced into the first and second flow spaces.
  • Solar heat collection method Pre-filling the fluidized bed and the first and second loop seals with the particles, Gas is introduced into the first and second flow spaces from the gas introduction part via the first dispersion plate, The particles are newly introduced from the particle inlet connected to the first group seal part, Discharging the particles from the particle outlet connected to the second group seal, An internal circulation flow of the particles is generated between the first flow space and the second flow space by setting different linear velocities of the gas introduced into the first and second flow spaces.
  • the solar heat collecting apparatus and the solar heat collecting method of the present invention have a configuration in which at least one of the first and second loop seal portions is connected to the fluidized bed in the heat collecting container (preferably, A configuration in which the fluidized bed is sandwiched between the first and second loop seal portions from both sides is employed. This ensures that a systematic internal circulation flow of the heat storage particles is generated in the fluidized bed directly under the irradiation section, while introducing and discharging the particles from the outside of the heat collection container to the heat collection container (external circulation of particles). Flow) can be generated at the same time.
  • each seal portion can prevent backflow and promote flow in a desired direction.
  • the heat storage particles can surely flow from the part to the fluidized bed to the second loop seal part to the particle outlet.
  • the solar heat collecting apparatus of the present invention can be used in various applications such as solar heat storage, solar fuel conversion, coal coke gasification, biomass gasification, and hydrothermal decomposition thermal reduction reaction.
  • the apparatus of the present invention can generate the desired flow in the particles by generating the internal circulation and the external circulation of the particles well inside and outside the apparatus. Reactions such as heat storage (highly efficient continuous operation) can occur.
  • the present invention corresponds to an increase in the size of the apparatus and enables highly efficient solar heat collection.
  • FIG. It is the figure explaining the outline of the solar heat collecting apparatus of Example 1.
  • FIG. It is the figure which showed the perspective view (a) of the heat collecting container of Example 1, and the separation type reaction system (b) of Example 2.
  • FIG. 1 is a diagram illustrating an outline of a solar heat collecting apparatus 1 according to the first embodiment.
  • the solar heat collecting apparatus 1 according to the present embodiment includes a heat collecting container 2 provided with a fluidized bed 3, an irradiation unit 4, and a gas introduction unit 5 (more preferably, a gas discharge unit 10).
  • the apparatus configuration shown in the drawings is an example, and the configuration and arrangement of each component are not limited to the illustrated example.
  • the irradiation unit 4 and the gas introduction unit 5 are not limited to the configuration arranged directly above or below the fluidized bed 3 as shown in the figure. Variations can be envisaged. That is, these modifications can also achieve the object of the present invention and obtain the effects thereof.
  • FIG. 2A is a perspective view of the heat collecting container 2.
  • the heat collecting container 2 includes a top plate 21 having a window 41 (described later) provided at the center, side plates 22 and 22 in the front-rear direction, side plates 23 and 23 in the left-right direction, and an extension 24 serving as a base.
  • the outer shape of the heat collecting container 2 is configured by.
  • the lower side of the heat collection container 2 is connected to the gas introduction unit 5 described above, so that the internal space of the heat collection container 2 (that is, the fluidized bed 3 and the first and second loop seal units 8 described later, 9) is sectioned.
  • the side plates 23 and 23 may be provided with irradiation unit side plates 23a that gradually become narrower downward so as to form the irradiation unit 4 that efficiently irradiates the concentrated sunlight S.
  • the fluidized bed 3 is called a two-column fluidized bed and has the following structure. That is, the fluidized bed 3 includes a first partition provided between the first and second openings 31 and 32 provided above and below the heat collecting container 2 and the first and second openings 31 and 32. The first and second flow spaces 34 and 35 connected to each other by the first and second openings 31 and 32 while being partitioned left and right by the first partition plate 33, and the first and second flow spaces 34. , 35 and heat storage particles P filled therein. Heat storage particles P (hereinafter, simply referred to as "particles".) As is the SiO 2 is the main component Toshikatsu melting point 1750 ° C. and a high quartz sand, magnetite (Fe 3 O 4) iron oxide, such as, radiation absorptance Particles made of silicon carbide (SiC) or the like having a high value are preferably used.
  • SiO 2 is the main component Toshikatsu melting point 1750 ° C. and a high quartz s
  • the irradiation unit 4 includes a window 41 provided in the upper part of the heat collecting container 2, and guides the condensed sunlight S through the window 41 to irradiate the particles P.
  • the window 41 is preferably a quartz window suitable for transmission of sunlight S.
  • the method and means for condensing the sunlight S up to the window 41 can employ conventional techniques.
  • the collection of sunlight S can be realized by a beam down type condensing system (not shown) composed of a ground reflecting mirror (helio stud) and a tower reflecting mirror (not shown).
  • the window 41 of the irradiation part 4 and the surrounding part of the window 41 are heated to extremely high temperature by the condensed sunlight S, as shown in FIG. 1 and FIG. It is desirable to lay the flow path 42 and flow the coolant through the cooling flow path 42 to cool the window 41 and the surrounding portion of the window 41.
  • the cooling flow path 42 including the inlet pipe 42 a and the outlet pipe 42 b may be laid so as to surround the outer edge of the window 41.
  • the gas introduction unit 5 introduces the gas G (Ga, Gb) toward the first and second fluid spaces 34 and 35 through the first dispersion plate 51a provided in the lower part of the fluidized bed 3 and the first dispersion plate 51a.
  • First and second introduction ports 52a and 52b are provided.
  • the first dispersion plate 51a is composed of a porous object (for example, a pore diameter of 10 to 100 ⁇ m). By incorporating this between the first and second introduction ports 52a and 52b and the fluidized bed 3, the particles P It is possible to supply the rectified gas G to the fluidized bed 3 while preventing the gas from entering the gas introduction part 5.
  • Second and third dispersion plates 51b and 51c which will be described later, also have the same configuration as the above-described configuration of the first dispersion plate 51a, and exhibit the same effects.
  • the linear velocity LVa of the gas Ga introduced into the first flow space 34 from the first introduction port 52a is set to be different from the linear velocity LVb of the gas Gb introduced into the second flow space 35 from the second introduction port 52b.
  • the linear velocities LVa and LVb are values obtained by dividing the flow rates of the gases Ga and Gb by the cross-sectional areas of the first and second introduction ports 52a and 52b corresponding to the respective flow rates, and the first dispersion plate per unit time. This means the velocity of each gas Ga, Gb passing through 51a (unit sectional area).
  • the linear LVc, LVd, and LVe of gases Gc, Gd, and Ge which will be described later, are also defined and derived by the same method.
  • an internal circulation flow in a desired rotation direction (clockwise or counterclockwise) can be caused.
  • the linear velocity LVa of gas Ga (V L in FIG. 4) is set larger than the linear velocity LVb (V R in FIG. 4) of gas Gb (that is, LVa ⁇ Lvb> 0)
  • Circulation can occur.
  • the linear velocity LVa of gas Ga (V L in FIG. 4) is set smaller than the linear velocity LVb (V R in FIG. 4) of gas Gb (that is, LVa ⁇ Lvb ⁇ 0)
  • it is counterclockwise. Can cause internal circulation. Refer to the flow map shown in FIG. 4 for the conditions of the respective linear velocities that generate the desired internal circulation.
  • the linear velocities LVa and LVb are adjusted by, for example, each gas Ga, by means of an air compressor, a valve, a flow meter, or the like (not shown) connected to the first and second introduction ports 52a and 52b, respectively. This can be done by adjusting the flow rate of Gb.
  • the gas G sent from the gas introduction unit 5 to the fluidized bed 3 is discharged from the gas discharge unit 10 to the outside of the heat collection container 2.
  • the gas G introduced into the fluidized bed 3 from the gas introduction part 5 (in the drawing, nitrogen N 2 ) undergoes a chemical reaction in the fluidized bed 3. It should be noted that when it is raised and discharged from the gas discharge unit 10, it may become a gas of different quality / composition (oxygen 0 2 in the drawing).
  • the heat collection container 2 further includes at least one of a particle introduction port 6 and a particle discharge port 7 for introducing and discharging the particles P, and first and second loop seal portions 8 and 9 connected to the fluidized bed 3.
  • a particle introduction port 6 and a particle discharge port 7 for introducing and discharging the particles P
  • first and second loop seal portions 8 and 9 connected to the fluidized bed 3.
  • both the first and second loop seal portions 8 and 9 are provided on the left and right sides (both sides) of the fluidized bed 3 as in the illustrated example. It is preferable that it is installed.
  • the first loop seal portion 8 connects the particle inlet 6 and the fluidized bed 3 (the first fluid space 34 thereof), and sequentially supplies the particles P to the first fluid space 34.
  • the second loop seal portion 9 connects the fluidized bed 3 (the second fluidized space 35 thereof) and the particle outlet 7 and supplies the particles P from the fluidized bed 3 to the particle outlet 7.
  • the particles P may be supplied sequentially (continuously), or the particles P may be supplied intermittently (for example, periodically or irregularly).
  • the solar heat collecting apparatus 1 employing the first and second loop seal portions 8 and 9 configured as described above ensures the organized internal circulation flow of the particles P in the fluidized bed 3 immediately below the irradiation unit 4.
  • the generation of particles P from the outside to the inside of the heat collecting container 2 and the discharge of the particles P from the inside of the heat collecting container 2 to the outside (external circulation flow of particles) can be simultaneously generated (multiple circulation). It becomes possible.
  • the suitable form of the 1st, 2nd loop seal parts 8 and 9 is illustrated below.
  • the first loop seal portion 8 is connected to each other at the lower opening 81 while being divided left and right by the lower opening 81, the second partition plate 82 extending upward from the lower opening 81, and the second partition plate 82.
  • the first and second fluid spaces 83, 84, the first wall 85 that divides the fourth fluid space 84 and the first fluid space 34 of the fluidized bed 3, and the upper part of the fourth fluid space 84 are provided, It is preferable to further include a seal outlet 86 connected to the flow space 34.
  • the particle introduction port 6 is connected to the upper part of the third flow space 83, so that new particles P are sequentially introduced from the outside of the heat collecting container 2 into the first loop seal portion 8, and the third and fourth.
  • the fluid is sequentially guided to the first flow space 34 of the fluidized bed 3.
  • the second loop seal portion 9 is connected to each other by the upper opening 91 while being divided left and right by the upper opening 91, the third partition plate 92 extending downward from the upper opening 91, and the third partition plate 92.
  • Fifth and sixth fluidized spaces 93 and 94, a second wall 95 that divides the fifth fluidized space 93 and the second fluidized space 35 of the fluidized bed 3, and a lower part of the fifth fluidized space 93 are provided. It is preferable to further include a seal inlet 96 connected to the third second flow space 35.
  • the backflow of the particles P can be prevented and the flow in the desired direction can be promoted in the respective portions 8 and 9. It is possible to reliably flow the particles P in a desired direction from the particle inlet 6 to the first loop seal 8 to the fluidized bed 3 to the second loop seal 9 to the particle outlet 7.
  • a suitable gas introduction part 5 includes a second dispersion plate 51b provided below the first loop seal part 8, and a gas G (Gc, Gd) through the second dispersion plate 51b in the third and fourth flow spaces 83, And third and fourth introduction ports 52c and 52d to be introduced toward 84.
  • the linear velocities LVc and LVd of the gases Gc and Gd introduced into the third and fourth flow spaces 83 and 84 from the third and fourth introduction ports 52c and 52d are supplied to the fluidized bed 3 with the gases Ga and Gb.
  • the linear velocity is preferably set to be different from either of the linear velocities Lva and LVb. More preferably, the linear velocities LVc and LVd are set smaller than a relatively large linear velocity of the linear velocities Lva and LVb. Accordingly, it is possible to reliably prevent the backflow of the particles P from the fluidized bed 3 to the first loop seal portion 8 while promoting the flow of the particles P from the first loop seal portion 8 toward the fluidized bed 3.
  • the gas introduction unit 5 introduces a third dispersion plate 51c provided in the lower part of the second loop seal unit 9 and a fifth gas Ge through the third dispersion plate 51c for introducing the gas Ge toward the fifth flow space 93. It is preferable to further include an introduction port 52e.
  • the linear velocity Lve of the gas Ge introduced into the fifth fluidized space 93 from the fifth inlet 52e is set to be different from any of the linear velocities Lva and LVb of the gases Ga and Gb supplied into the fluidized bed 3. It is preferable. More preferably, the linear velocity LVe is set smaller than a relatively large linear velocity of the linear velocities Lva and LVb. Thereby, it is possible to reliably prevent the backflow of the particles P from the second loop seal portion 9 to the fluidized bed 3 while promoting the flow of the particles P from the fluidized bed 3 toward the second loop seal portion 9.
  • the solar heat collecting apparatus 1 further includes first and second transport paths 11 and 12 and a heat storage container 13.
  • the first transport path 11 communicates the particle discharge port 7 and the heat storage container 13 and can transport the particles P from the heat collection container 2 to the heat storage container 13.
  • the second transport path 12 is characterized in that particles P can be transported from the heat storage container 13 to the heat collection container 2 by communicating the heat storage container 13 and the particle inlet 6.
  • the heat storage container 13 may be provided with a heat exchanger 14 that transfers heat from the particles P.
  • the heat exchanger 14 may be provided with an inlet pipe 15 for introducing gas and an outlet pipe 16 for discharging the gas that has received heat from the heat exchanger 14.
  • the solar heat collecting apparatus 1 of the present invention can cope with an increase in size and continuous operation, and is a highly efficient solar heat collecting device. Is possible.
  • the thermal reduction reactor 2a for the hydrothermal decomposition apparatus 2ds as follows.
  • metal oxide particles such as cerium oxide or zirconia supporting cerium oxide, or zirconia supporting ferrite or ferrite
  • the particle size of the metal oxide is preferably about 100 to 750 ⁇ m.
  • a gas capable of reducing the particles P for example, a low oxygen partial pressure gas such as nitrogen or argon
  • a low oxygen partial pressure gas such as nitrogen or argon
  • Example 2 In the prior art as shown in Patent Document 1, one tower of a two-column fluidized bed is used as a thermal reduction reactor, and the other tower is used as a hydrothermal decomposition (oxidation) reactor.
  • the whole heat collection vessel 2 including the two-column fluidized bed 3 can be used as the thermal reduction reactor 2a, and the oxidation reactor 2b (see FIG. 2B). ) May be separated from the heat collecting container 2 and provided outside thereof.
  • the apparatus 1 of Example 2 becomes the separation-type reaction system 2 ds , and can generate and continue a continuous and highly efficient reaction.
  • coal coke particles and fluid medium particles for example, quartz sand
  • the particle size of the fluid medium particles is more preferably 300 ⁇ m or less.
  • the volume ratio of coal coke particles and fluidized medium particles is preferably set to about 2: 8 to 8: 2.
  • water vapor is selected as the gas G supplied from the gas introduction unit 5.
  • the solar heat collecting apparatus 1 of the present invention includes various methods such as solar heat storage, solar fuel conversion, coal coke gasification, biomass gasification, hydrothermal decomposition thermal reduction reaction, and the like. It can be understood that it can be used for various purposes. Furthermore, as described above, the apparatus 1 of the present invention can be generated by combining the internal circulation and the external circulation of the particles P well (multiple circulation of the particles P is possible). It is possible to cause a reaction such as continuous heat storage (highly efficient continuous operation).
  • the present inventors manufactured a visualization experiment apparatus.
  • a model (cold model, see FIGS. 3A and 3B) that does not take into consideration the heat collection and irradiation of the sunlight S was used.
  • the visualization flow path simulating the heat collection container 2 was made of a transparent material made of acrylic resin, and the particles P were supplied into the flow path.
  • beads of expandable polystyrene of two colors of blue and white (the diameter of the particles P is about 0.7 mm to 1.4 mm, the specific gravity is 1) .04) was used.
  • the total width of the visualization channel (heat collecting container 2) is about 300 mm (the widths of the first to fifth flow spaces 34, 35, 83, 84, and 93 are 50 mm), and the depth is 30 mm (FIG. 3 ( see a)). That is, in this cold model, since the cross-sectional areas of the respective flow spaces are the same, the ratio of the flow rate passing through each flow space and the ratio of the linear velocity are proportional.
  • “ ⁇ ” indicates a state where generation of bubbles is observed on both sides (first and second flow spaces 34, 35). “ ⁇ ” indicates a state in which the circulation (and generation of bubbles) of the particles P in the clockwise direction is observed in the fluidized bed 3, while “ ⁇ ” indicates the counterclockwise direction in the fluidized bed 3. The state in which the circulation of particles P (and the generation of bubbles) is observed is shown.
  • FIG. 5A shows an example of the flow state of the particles P in which counterclockwise circulation is observed.
  • the circulation direction of the particles P in the two-column fluidized bed 3 can be changed by appropriately changing the linear velocity of the supply air G (Ga, Gb).
  • the first to fifth flow spaces 34, 35, 83, 84, and 93 are sequentially filled with blue particles P and white particles P, and the particles P supplied from the feeder are also filled with white particles P.
  • the particles P were selected and visualized.
  • the particles P are stably supplied to the second loop seal portion 9 while causing the internal circulation of the “clockwise” particles P in the two-column fluidized bed 3 in the center, and the particles are discharged from the particle discharge port 7. It was confirmed that P was discharged.
  • the solar heat collecting apparatus and the solar heat collecting method of the present invention have a configuration in which at least one of the first and second loop seal portions is connected to the fluidized bed in the heat collecting container (preferably, A configuration in which the fluidized bed is sandwiched between the first and second loop seal portions from both sides is employed.
  • a configuration in which the fluidized bed is sandwiched between the first and second loop seal portions from both sides is employed.
  • each seal portion can prevent backflow and promote flow in a desired direction. It is possible to reliably flow the particles to the discharge port.
  • the solar heat collecting apparatus of the present invention can be used in various applications such as solar heat storage, solar fuel conversion, coal coke gasification, biomass gasification, and hydrothermal decomposition thermal reduction reaction.
  • the apparatus of the present invention has a configuration in which the internal circulation and external circulation of particles are well combined, so unlike conventional batch systems, reactions such as continuous heat storage (highly efficient continuous operation) Can be caused.
  • the present invention corresponds to an increase in the size of the apparatus and enables highly efficient solar heat collection.
  • the present invention has very high industrial utility value and industrial applicability.

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  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)

Abstract

La présente invention concerne un lit fluidisé de collecte de chaleur solaire avec lequel il est possible de mettre en œuvre efficacement un écoulement à circulation interne et un flux de particules à circulation externe. Ce dispositif de collecte de chaleur solaire 1 comprend un récipient de collecte de chaleur 2 doté d'un lit fluidisé 3, d'une unité d'irradiation 4 et d'une unité d'introduction de gaz 5. Le lit fluidisé 3 comprend des première et seconde parties d'ouverture 31, 32, une première plaque de séparation 33, des premier et second espaces d'écoulement 34, 35, et des particules P. Le récipient de collecte de chaleur 2 comprend en outre : une ouverture d'introduction de particules 6 et/ou une ouverture d'évacuation de particules 7 pour introduire et évacuer les particules P, respectivement ; et des première et seconde parties d'étanchéité en boucle 8, 9 reliées au lit fluidisé 3. La première partie d'étanchéité en boucle 8 relie l'ouverture d'introduction de particules 6 et le premier espace d'écoulement 34 du lit fluidisé 3, et fournit les particules P au premier espace d'écoulement 34. La seconde partie d'étanchéité en boucle 9 relie le second espace d'écoulement 35 du lit fluidisé 3 et l'ouverture d'évacuation de particules 7, et fournit les particules P à l'intérieur du second espace d'écoulement 35 à l'ouverture d'évacuation de particules 7.
PCT/JP2018/018005 2017-05-16 2018-05-09 Dispositif de collecte de chaleur solaire doté d'un lit fluidisé, et procédé de collecte de chaleur solaire l'utilisant WO2018212046A1 (fr)

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Cited By (1)

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EP4105479A1 (fr) * 2021-06-15 2022-12-21 John Cockerill Renewables S.A. Échangeur de chaleur à particules pour une centrale électrique à tour solaire

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WO2014038553A1 (fr) * 2012-09-05 2014-03-13 国立大学法人新潟大学 Dispositif de collecte de chaleur/stockage de chaleur utilisant la lumière solaire
JP2014181306A (ja) * 2013-03-21 2014-09-29 Ihi Corp ガス化ガス生成システム
CN104482663A (zh) * 2014-12-12 2015-04-01 浙江大学 一种太阳能双腔式金属氧化物颗粒集热储能方法及其装置
WO2015048845A1 (fr) * 2013-10-02 2015-04-09 Adelaide Research & Innovation Pty Ltd Système hybride solaire et à combustion en boucle chimique
JP2015086232A (ja) * 2013-10-28 2015-05-07 国立大学法人 新潟大学 内循環流動層を用いた石炭コークスのガス化装置及びガス化法
JP2016044829A (ja) * 2014-08-20 2016-04-04 株式会社Ihi 乾燥装置及び含水物の乾燥方法
JP5986589B2 (ja) * 2012-01-31 2016-09-06 国立大学法人 新潟大学 内循環流動層を用いた水熱分解装置及び水熱分解法

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JP5986589B2 (ja) * 2012-01-31 2016-09-06 国立大学法人 新潟大学 内循環流動層を用いた水熱分解装置及び水熱分解法
WO2014038553A1 (fr) * 2012-09-05 2014-03-13 国立大学法人新潟大学 Dispositif de collecte de chaleur/stockage de chaleur utilisant la lumière solaire
JP2014181306A (ja) * 2013-03-21 2014-09-29 Ihi Corp ガス化ガス生成システム
WO2015048845A1 (fr) * 2013-10-02 2015-04-09 Adelaide Research & Innovation Pty Ltd Système hybride solaire et à combustion en boucle chimique
JP2015086232A (ja) * 2013-10-28 2015-05-07 国立大学法人 新潟大学 内循環流動層を用いた石炭コークスのガス化装置及びガス化法
JP2016044829A (ja) * 2014-08-20 2016-04-04 株式会社Ihi 乾燥装置及び含水物の乾燥方法
CN104482663A (zh) * 2014-12-12 2015-04-01 浙江大学 一种太阳能双腔式金属氧化物颗粒集热储能方法及其装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4105479A1 (fr) * 2021-06-15 2022-12-21 John Cockerill Renewables S.A. Échangeur de chaleur à particules pour une centrale électrique à tour solaire
WO2022263035A1 (fr) * 2021-06-15 2022-12-22 John Cockerill Renewables S.A. Échangeur de chaleur à particules pour centrale électrique à tour solaire

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