JP2012220102A - Reactor - Google Patents

Abstract

The performance of generating water vapor is improved.
A chemical heat storage material 30 that generates steam by reaction heat generated when it reacts with water and is heated to separate and store heat, and a heat exchanger 40 that incorporates the chemical heat storage material 30; The heat exchanger 40 extends along the vertical direction to accommodate the chemical heat storage material 30 and has a discharge port 48 that discharges water vapor generated by the chemical heat storage material 30 to the outside at the upper end in the vertical direction. The water flow configured to have the heat storage material accommodation space 42, the plurality of discharge ports 50 communicating with the heat storage material accommodation space 42, and the branch pipes 54 communicating between the external water supply unit and the plurality of discharge ports 50 A passage 44 and a heat medium passage 46 for circulating a heat medium for heating the chemical heat storage material 30, the direction of the flow of water supplied to the branch pipe 54, and water vapor is released from the discharge port 48. In a reactor with the same direction, The temporal and / or spatial multistage thermal member 30 comprises a multi-stage water supply means for supplying water.
[Selection] Figure 4

Description

  The present invention relates to a reactor.

  Conventionally, a reactor provided with a porous tube, a plurality of calcium oxide molded bodies filled in the porous tube, and a heat-resistant porous member respectively laminated between the plurality of calcium oxide molded bodies Is known (see, for example, Patent Document 1).

JP-A-7-180539

  However, in this reactor, since the hydrated expansion pressure of the calcium oxide molded body is as high as several MPa, the porosity is low (about 80% or less) so that the heat-resistant porous member does not undergo compression deformation or collapse. There is a need to. However, in this case, since the pressure loss is large, the water vapor partial pressure is lowered, and the reactivity of the heat storage material is lowered. Moreover, since the heat capacity of the heat-resistant porous member is large, the amount of heat that can be used decreases. That is, in the prior art using a heat resistant porous member, the performance of generating water vapor is low.

  An object of this invention is to provide the reactor which can improve the performance which produces | generates water vapor | steam.

  In order to solve the above-mentioned problem, the reactor according to claim 1 generates a water vapor by reaction heat generated when reacting with water, and is heated to separate the water from the chemical heat storage material to store heat. A heat exchanger containing the chemical heat storage material, and the heat exchanger extends along the vertical direction to accommodate the chemical heat storage material and is generated by the chemical heat storage material at an upper end in the vertical direction. A heat storage material accommodation space having a discharge port for releasing the steam that has been discharged to the outside, a plurality of discharge ports communicating with the heat storage material accommodation space, and a branch pipe communicating between the external water supply unit and the plurality of discharge ports A water flow path configured to circulate, and a heat medium flow path for circulating a heat medium that heats the chemical heat storage material, the direction of the flow of water supplied to the branch pipe, and the water vapor In a reactor in which the direction in which In time and / or spatially heat storage material is obtained with a multistage water supply means for supplying water in multiple stages.

  In a reactor having a heat storage material accommodation space, a water flow path, and a heat medium flow path, heat generated by a hydration reaction between the chemical heat storage material and water is exchanged with water for an operating temperature range. It can be produced with water vapor having a high water vapor pressure. However, if the feed water rate is high and the hydration reaction rate is exceeded, or if the heat exchange capacity between the feed water and the chemical heat storage material is insufficient, the local temperature drop or water A delay in the amount of generation occurs.

  However, in this reactor, water is supplied to the chemical heat storage material in multiple stages in terms of time and / or space, so that the temperature of the chemical heat storage material is accelerated by the hydration reaction, and the subsequent water vapor generation is smooth. It becomes possible to do. Thereby, the performance which produces | generates water vapor | steam can be improved.

  The reactor according to claim 2 is the reactor according to claim 1, wherein the multistage water supply means has at least two or more water supply ports in the branch pipe.

  According to this reactor, since the branch pipe has at least two water supply ports, the flow rates to the respective supply ports can be added (mixed) in the combination. Further, by changing the liquid supply timing to each supply port, it becomes possible to vary the water supply flow rate to the plurality of discharge ports temporally and spatially.

  The reactor according to claim 3 is the reactor according to claim 2, wherein the multistage water supply means has at least two water supply paths independently of the branch pipe. .

  According to this reactor, since the branch pipes independently have at least two or more water supply paths, the spatial flow distribution can be controlled.

  The reactor according to claim 4 is the reactor according to claim 2, wherein the multistage water supply means includes the branch pipe, a first water supply path having at least two water supply ports, and at least one. And a second water supply path having one or more water supply ports.

  According to this reactor, since the first water supply path has at least two or more water supply ports, the flow rates to the respective supply ports can be added (mixed) in the combination. Further, by changing the liquid supply timing to each supply port, it becomes possible to vary the water supply flow rate to the plurality of discharge ports temporally and spatially. In addition, since the second water supply path independently has at least two or more water supply paths, the spatial flow rate distribution can be further controlled.

  The reactor according to claim 5 is the reactor according to claim 1, wherein the multistage water supply means includes a temperature raising step in which a part of the chemical heat storage material undergoes a hydration reaction, and the chemical heat storage material. The external water supply is performed so that at least two steps of the water vapor generation step of generating the water vapor using the heat generated by the hydration reaction of all or part of the water and the vaporization of the supply water are performed at least in time. The control unit controls the unit.

  According to this reactor, it is possible to suppress the generation of the low temperature part of the chemical heat storage material due to the excessive water supply by clearly controlling the temperature increase step and the water vapor generation step of the chemical heat storage material. In addition, it is possible to generate water vapor smoothly by ensuring an initial rising temperature over the entire surface that can sufficiently compensate for the amount of cooling heat generated by the sensible heat of the supplied water.

  The reactor according to claim 6 is the reactor according to claim 1, wherein the multistage water supply means is located above the central portion in the vertical direction of the chemical heat storage material rather than in the vertical direction at the bottom of the chemical heat storage material. The plurality of discharge ports are spatially divided into two stages so that more water is supplied to the part that reaches.

  According to this reactor, more water is supplied from the vertical center to the upper part of the chemical heat storage material than to the lower part of the chemical heat storage material in the vertical direction. It is possible to promote diffusion into the water, to ensure the contact time with the chemical heat storage material of the supplied water, and to suppress the storage of water in the lower part of the reactor due to insufficient heat exchange capacity.

  The reactor according to claim 7 is the reactor according to claim 1, wherein the multistage water supply means supplies water to the upper part in the vertical direction of the chemical heat storage material, and the chemical heat storage. Control to supply water to the chemical heat storage material in two stages temporally and spatially by controlling the external water supply unit so that a water vapor generation process is performed by uniformly supplying water to all of the material It was taken in the department.

  According to this reactor, water is supplied to the chemical heat storage material in two stages in terms of time and space. Therefore, the water supplied to the upper part in the vertical direction of the chemical heat storage material in the initial process is contained in the chemical heat storage material. However, it disperses in the vertical lower part of the chemical heat storage material by gravity. As a result, the temperature of the chemical heat storage material can be increased by supplying an appropriate amount of water, and water vapor can be stably generated by supplying uniformly dispersed water in the next step.

  The reactor according to claim 8 is the reactor according to claim 5 or claim 7, wherein a detection value of an internal pressure detection unit for detecting the internal pressure of the heat storage material accommodation space is predetermined by the control unit. When the threshold value is exceeded, the temperature raising step is switched to the water vapor generating step.

  According to this reactor, the internal pressure of the heat storage material accommodation space is detected in the heating step of the chemical heat storage material. And when this detected value becomes more than a predetermined threshold value, it switches from a temperature rising process to a water vapor | steam production | generation process. Therefore, in the water vapor generation process, which is the next process, water vapor generation can be performed stably.

  A reactor according to claim 9 is the reactor according to claim 5 or claim 7, wherein the control unit detects a temperature of the chemical heat storage material and a detection value of a temperature detection unit is determined in advance. When it becomes above, it is set as the structure switched from the said temperature rising process to the said water vapor | steam production | generation process.

  According to this reactor, the temperature of the chemical heat storage material is detected in the step of heating the chemical heat storage material. And when this detected value becomes more than a predetermined threshold value, it switches from a temperature rising process to a water vapor | steam production | generation process. Therefore, in the water vapor generation process, which is the next process, water vapor generation can be performed stably.

  The reactor according to claim 10 is the reactor according to claim 5 or claim 7, wherein the control unit is configured so that, in the temperature raising step, water having an allowable water content of the chemical heat storage material is the chemical heat storage material. It is set as the structure which controls the said external water supply part so that it may be supplied to.

  In general, a chemical heat storage material provided in a reactor that generates water vapor is formed of a porous material for the purpose of ensuring internal diffusion of water and water vapor necessary for the hydration reaction. Moreover, the chemical heat storage material with strong affinity to water has high adsorptivity. Therefore, as in this reactor, in the temperature raising step, the water with the allowable water content of the chemical heat storage material (this allowable water content is limited to the water content equivalent to the void volume of the chemical heat storage material) is the chemical heat storage material. , The water is stably retained inside the chemical heat storage material and contributes to the hydration reaction, and water storage inside the reactor can be suppressed.

  The reactor according to claim 11 is the reactor according to any one of claims 1 to 10, wherein the heat exchanger is between the plurality of discharge ports and the chemical heat storage material. The structure has a porous film having water retention.

  According to this reactor, it is possible to suppress excessive water storage in the chemical heat storage material by supplying water through a thick film having water retention. As a result, water can be stably supplied in the temperature raising step.

  The reactor according to claim 12 is the reactor according to any one of claims 1 to 11, wherein a water supply port of the branch pipe is formed at a lower part in a vertical direction of the heat exchanger. It is.

  According to this reactor, the water supply port of the branch pipe is formed in the lower part in the vertical direction of the heat exchanger. Therefore, the heat exchange capability with the chemical heat storage material can be maximized.

  As described above in detail, according to the present invention, the performance of generating water vapor can be improved.

It is a figure showing the whole steam generation system composition concerning one embodiment of the present invention. It is a perspective view of the 1st reactor shown by FIG. It is a top view of the 1st reactor shown by FIG. FIG. 4 is a sectional view taken along line AA in FIG. 3. FIG. 4 is a sectional view taken along line BB in FIG. 3. It is the arrow line view which looked at the water flow path formation wall part shown by FIG. 4 from CC direction. It is a figure which shows the 1st modification of the water flow path shown by FIG. It is a figure which shows the 2nd modification of the water flow path shown by FIG. It is a figure which shows the 3rd modification of the water flow path shown by FIG. It is a figure which shows the 1st modification of the water vapor | steam production | generation system shown by FIG. It is 1st explanatory drawing which shows a mode that it switches from a temperature rising process to a water vapor | steam production | generation process. It is a 2nd explanatory view which shows a mode that it switches from a temperature rising process to a water vapor | steam production | generation process. It is a 3rd explanatory view which shows a mode that it switches from a temperature rising process to a water vapor | steam production | generation process. It is a figure which shows the 2nd modification of the water vapor | steam production | generation system shown by FIG. It is a figure which shows the 3rd modification of the water vapor | steam production | generation system shown by FIG. It is sectional drawing which shows the modification of the 1st reactor shown by FIG.

  Hereinafter, an embodiment of the present invention will be described.

  As shown in FIG. 1, a steam generation system S according to an embodiment of the present invention includes a first reactor 10, which is an example of a reactor in the present invention, a second reactor 100, a water tank 12, A water supply pipe 18 provided with a liquid feed pump 14 and a valve 16, a pipe 19, and a water vapor discharge pipe 20 are provided.

  Water 22 is stored in the water tank 12. The first reactor 10 is connected to the water tank 12 in a sealed state by a water supply pipe 18. When water is supplied from the water tank 12, the first reactor 10 generates water vapor and supplies the water vapor to the second reactor 100 through the pipe 19. The second reactor 100 has the same configuration as the first reactor 10, and exhibits exothermic reaction due to hydration when steam is supplied from the first reactor 10. Specifically, the first reactor 10 has the following configuration.

  That is, the 1st reactor 10 is provided with the chemical heat storage material 30 and the heat exchanger 40 which incorporates this chemical heat storage material 30, as FIG. The chemical heat storage material 30 generates water vapor by reaction heat generated when it reacts with water, and is separated from water by being heated to store heat. As the chemical heat storage material 30, for example, a material molded into a plate shape or a particulate material is used.

In this embodiment, calcium oxide (CaO), which is one of alkaline earth metal hydroxides, is used as the chemical heat storage material 30. Therefore, in the first reactor 10, the hydration reaction and dehydration reaction can be reversibly repeated as follows.
CaO + H ₂ O Ｃａ Ca (OH) ₂

In addition, when the heat storage amount and the calorific value Q are shown together in this equation, it is as follows.
Ca (OH) ₂ + Q → CaO + H ₂ O
CaO + H ₂ O → Ca (OH) ₂ + Q

  The heat exchanger 40 includes a heat storage material storage space 42 in which the chemical heat storage material 30 is stored, a water flow path 44 that communicates the water supply pipe 18 (see FIG. 1) and the heat storage material storage space 42, and a chemical heat storage material A heat medium passage 46 for circulating a heat medium that heats 30.

  The heat storage material accommodation space 42 has a discharge port 48 that extends along the vertical direction and discharges water vapor generated by the chemical heat storage material 30 to the outside at the end on the upper side in the vertical direction. The discharge port 48 is connected to the water vapor discharge pipe 20 (see FIG. 1).

  The water flow path 44 includes a plurality of discharge ports 50 communicating with the heat storage material accommodation space 42, a main tube 52 connected to the water supply pipe 18, and a branch tube 54 communicating the main tube 52 and the plurality of discharge ports 50. Has been. The liquid feed pump 14 and the valve 16 are an example of an external water supply unit in the present invention. The valve 16 is constituted by, for example, an electromagnetic valve.

  As shown in FIG. 6, the branch pipe 54 has a tree shape having a plurality of branch portions. Further, the plurality of discharge ports 50 are arranged in the vertical direction (Z direction), and in the present embodiment, they are arranged in a staggered manner as an example.

  Moreover, in this heat exchanger 40, as an example of the multistage water supply means for supplying water to the chemical heat storage material 30 in multiple stages in time and / or space, the branch pipe 54 has at least two water supply ports 55. It is supposed to have a configuration. The water supply port 55 is formed in the lower part of the heat exchanger 40 in the vertical direction.

  Furthermore, in this heat exchanger 40, the direction of the flow of water supplied from the water supply port 55 to the branch pipe 54 is coincident with the direction of discharge of water vapor discharged from the heat storage material accommodation space 42 to the outside. Is also on the discharge port 48 side).

  Further, the heat exchanger 40 has a water flow path forming wall portion 56 in which a water flow path 44 is formed, and the plurality of discharge ports 50 are arranged on the upper side in the vertical direction of the water flow path forming wall portion 56 (described above). It is formed vertically below the non-formation region 58 on the discharge port 48 side.

  Further, as shown in FIG. 4, fins 60 are provided in the heat medium flow path 46. A partition wall 62 is formed between the heat medium flow path 46 and the heat storage material accommodation space 42.

  Next, the operation and effect of one embodiment of the present invention will be described.

  According to the first reactor 10 according to an embodiment of the present invention, the water flow path 44 is provided inside the heat exchanger 40, and water is supplied to the entire chemical heat storage material 30 from the plurality of discharge ports 50. The whole material 30 can react with water uniformly. Further, with such a configuration, more discharge ports 50 can be easily provided, so that the water penetration distance can be reduced, and water vapor generated by the heat of hydration reaction enters the chemical heat storage material 30. It is possible to greatly suppress the channel blocking action that hinders the penetration of water. Thereby, since the whole chemical heat storage material 30 can be made to react uniformly, reaction rate can improve and the performance which produces | generates water vapor | steam with the reaction heat obtained as a result can be improved.

  Moreover, since the branch pipe 54 has a tree shape having a plurality of branch portions, water can be distributed using dynamic pressure. Thereby, water can be simultaneously discharged from the plurality of discharge ports 50.

  Furthermore, since the plurality of discharge ports 50 are arranged in a zigzag pattern, water can be supplied uniformly to the entire chemical heat storage material 30 with the minimum number of ports.

  Moreover, the direction of the flow of water supplied to the branch pipe 54 and the discharge direction of water vapor discharged from the heat storage material accommodation space 42 to the outside coincide with each other (both are on the discharge port 48 side). Thereby, inhibition of water supply due to the generation temperature distribution of water vapor can be suppressed.

  By the way, in the 1st reactor 10 which has the heat storage material accommodation space 42, the water flow path 44, and the heat-medium flow path 46, the heat | fever produced | generated by the hydration reaction of the chemical heat storage material 30 and water is directly with water. It can be generated with water vapor having a high water vapor pressure relative to the operating temperature range by heat exchange. However, when the supply water rate is high and exceeds the hydration reaction rate, or when the heat exchange capacity between the supply water and the chemical heat storage material 30 is insufficient, a local temperature drop due to supply water storage or A delay in the amount of water vapor produced occurs.

  However, if water is supplied to the chemical heat storage material 30 in multiple stages in time and / or space using at least two or more water supply ports 55 formed in the branch pipe 54, chemical heat storage by hydration reaction is performed. The temperature rise of the material 30 can be promoted, and the subsequent water vapor generation can be made smooth. Thereby, the performance which produces | generates water vapor | steam can be improved.

  In particular, when the branch pipe 54 is configured to have at least two or more water supply ports 55, the flow rates to the respective supply ports 55 can be added (mixed) in the combination. Further, by changing the liquid supply timing to each supply port 55, it becomes possible to vary the water supply flow rate to the plurality of discharge ports 50 temporally and spatially.

  Moreover, since the water supply port 55 is formed in the lower part of the heat exchanger 40 in the vertical direction, the heat exchange capability with the chemical heat storage material 30 can be maximized.

  Further, like the first reactor 10, the plurality of discharge ports 50 are formed on the lower side in the vertical direction than the non-formation region 58 on the upper side in the vertical direction (the above-described discharge port 48 side) in the water flow path forming wall portion 56. If this is done, it is possible to suppress the temperature drop due to the supply of water to the periphery of the discharge port 48, and to enable superheat to effectively recover the heat due to the hydration reaction by the water vapor generated on the lower side in the vertical direction to the water vapor. .

  Moreover, according to the chemical heat storage apparatus S which concerns on one Embodiment of this invention, as above-mentioned, the chemical heat storage material 30 incorporated in the 1st reactor 10 generate | occur | produces by reacting with water, and also water is chemical. Water vapor is generated by being supplied to the heat storage material 30, and the water vapor is heated by a hydration reaction with the chemical heat storage material in the second reactor 100. Therefore, since the second reactor 100 generates heat due to the hydration reaction with respect to the high water vapor pressure generated in the first reactor 10, it is caused by the vapor pressure as compared with the case where the hydration reaction is performed in one reactor. High temperature can be generated.

  Next, a modification of one embodiment of the present invention will be described.

  In the said embodiment, the multistage water supply means in this invention may be comprised as follows.

  That is, in the modification shown in FIG. 7, the branch pipe 54 is configured to have at least two water supply paths 57 independently.

  With this configuration, it is possible to control the spatial flow distribution.

  Further, in the modification shown in FIG. 8, the branch pipe 54 includes a first water supply path 59 having at least two water supply ports 55 and a second water supply path 61 having one water supply port 55. It is set as the structure which has.

  If comprised in this way, the 1st water supply path 59 has at least 2 or more water supply port 55, Therefore The flow volume to each supply port 55 can be totaled (mixed) in the combination. Further, by changing the liquid supply timing to each supply port 55, it becomes possible to vary the water supply flow rate to the plurality of discharge ports 50 temporally and spatially. In addition, since the second water supply path 61 has at least two or more water supply paths 55 independently, it is possible to further control the spatial flow distribution. Note that the second water supply path 61 may have at least one or more water supply ports 55.

  Also, for example, as shown in FIG. 9, when the branch pipe 54 has one water supply path 63 having one water supply port 55, the multistage water supply means in the present invention is configured as follows. May be.

  That is, water vapor is generated by using the temperature rising process by a hydration reaction of a part of the chemical heat storage material 30 and the heat generated by the hydration reaction of all or a part of the chemical heat storage material 30 and the supply water being vaporized. As shown in FIG. 10, the control unit 90 for controlling the liquid feed pump 14 and the valve 16 is provided in the multi-stage water supply means of the present invention so that at least two steps of the steam generation process for generating water are performed. It may be provided as an example. The control unit 90 is configured by an electronic circuit such as a CPU, for example.

  If comprised in this way, as FIG. 11 shows, the low temperature part of the chemical heat storage material 30 by excess water supply will be carried out by separating and controlling the temperature rising process and water vapor generation process of the chemical heat storage material 30 clearly. Generation can be suppressed. In addition, it is possible to generate water vapor smoothly by ensuring an initial rising temperature over the entire surface that can sufficiently compensate for the amount of cooling heat generated by the sensible heat of the supplied water.

  In addition, as shown in FIG. 12, as an example of the multistage water supply means in the present invention, there are more portions from the central portion of the chemical heat storage material 30 to the upper portion than the lower portion of the chemical heat storage material 30 in the vertical direction. The plurality of discharge ports 50 (see FIG. 6) may be spatially divided into two stages so that the water is supplied.

  When configured in this way, more water is supplied from the vertical center to the upper part of the chemical heat storage material 30 than the lower part of the chemical heat storage material 30 in the vertical direction. It is possible to promote the diffusion to the entire surface due to the descent of the water, to ensure the contact time with the chemical heat storage material 30 of the supplied water, and to suppress the storage of water in the lower part of the first reactor 10 due to the lack of heat exchange capability.

  Moreover, the above-mentioned control part 90 seems to perform the temperature rising process by supplying water to the vertical direction upper part of the chemical heat storage material 30, and the water vapor | steam production | generation process by having supplied water uniformly to all the chemical heat storage materials. In addition, the liquid feed pump 14 and the valve 16 may be controlled to supply water to the chemical heat storage material in two stages temporally and spatially.

  When configured in this manner, as shown in FIG. 13, water is supplied to the chemical heat storage material 30 in two stages in terms of time and space. The supplied water is dispersed in the lower part in the vertical direction of the chemical heat storage material 30 by gravity while containing water in the chemical heat storage material 30. As a result, the temperature of the chemical heat storage material 30 can be increased by supplying an appropriate amount of water, and water vapor can be stably generated by supplying uniformly dispersed water in the next step.

  Further, as shown in FIG. 14, an internal pressure detection unit 92 that detects the internal pressure of the heat storage material accommodation space 42 is provided, and the control unit 90 sets the detection value of the internal pressure detection unit 92 to a predetermined threshold value or more. When it becomes, you may be comprised so that it may switch from a temperature rising process to a water vapor | steam production | generation process.

  If comprised in this way, the internal pressure of the thermal storage material accommodation space 42 will be detected in the temperature rising process of the chemical thermal storage material 30. And when this detected value becomes more than a predetermined threshold value, it switches from a temperature rising process to a water vapor | steam production | generation process. Therefore, in the water vapor generation process, which is the next process, water vapor generation can be performed stably.

  Further, as shown in FIG. 15, a temperature detection unit 94 that detects the temperature of the chemical heat storage material 30 is provided, and the control unit 90 has a detection value of the temperature detection unit equal to or higher than a predetermined threshold value. You may be comprised so that it may switch from a temperature rising process to a water vapor | steam production | generation process.

  If comprised in this way, in the temperature rising process of the chemical heat storage material 30, the temperature of the chemical heat storage material 30 will be detected. And when this detected value becomes more than a predetermined threshold value, it switches from a temperature rising process to a water vapor | steam production | generation process. Therefore, in the water vapor generation process, which is the next process, water vapor generation can be performed stably.

  Further, the control unit 90 described above is configured to control the liquid feed pump 14 and the valve 16 so that water having an allowable water content of the chemical heat storage material 30 is supplied to the chemical heat storage material 30 in the temperature raising step. May be.

  In general, a chemical heat storage material provided in a reactor that generates water vapor is formed of a porous material for the purpose of ensuring internal diffusion of water and water vapor necessary for the hydration reaction. Moreover, the chemical heat storage material with strong affinity to water has high adsorptivity. Therefore, as in the first reactor 10, in the temperature raising step, the water having the allowable water content of the chemical heat storage material 30 (the allowable water content is limited to the water content equivalent to the void volume of the chemical heat storage material). Is supplied to the chemical heat storage material 30, the water is stably retained inside the chemical heat storage material 30 and contributes to the hydration reaction, and water storage inside the first reactor 10 can be suppressed.

  Further, as shown in FIG. 16, the heat exchanger 40 may have a porous film 96 having water retention between the plurality of discharge ports 50 and the chemical heat storage material.

  If comprised in this way, the excess water storage to the chemical thermal storage material 30 can be suppressed by the water supply via the thick film 96 having water retention. As a result, water can be stably supplied in the temperature raising step.

  Of the plurality of modifications, combinations that can be combined can be implemented by appropriately combining them.

  As mentioned above, although one Embodiment of this invention was described, this invention is not limited above, In addition to the above, in the range which does not deviate from the main point, it can implement in various deformation | transformation.

10 First reactor (reactor)
30 Chemical heat storage material 40 Heat exchanger 42 Heat storage material accommodation space 44 Water flow path 46 Heat medium flow path 48 Discharge port 50 Discharge port 52 Main pipe 54 Branch pipe 90 Control part 92 Internal pressure detection part 94 Temperature detection part 96 Porous membrane 100 Second reaction S Steam generation system

Claims (12)

A chemical heat storage material that generates water vapor by reaction heat generated when it reacts with water, and is separated from water by being heated to store heat,
A heat exchanger containing the chemical heat storage material;
With
The heat exchanger is
A thermal storage material accommodation space that extends along the vertical direction and accommodates the chemical thermal storage material, and has an outlet that discharges water vapor generated by the chemical thermal storage material to the outside at the end on the upper side in the vertical direction;
A plurality of outlets communicating with the heat storage material accommodation space, a main pipe connected to an external water supply unit, and a water flow path configured to have a branch pipe communicating the main pipe and the plurality of outlets;
A heat medium flow path for circulating a heat medium for heating the chemical heat storage material;
Have
In a reactor in which the direction of the flow of water supplied to the branch pipe and the direction in which the water vapor is released are matched,
A reactor comprising a multistage water supply means for supplying water to the chemical heat storage material in multiple stages in time and / or space. The multi-stage water supply means is configured such that the branch pipe has at least two or more water supply ports.
The reactor according to claim 1. The multistage water supply means is configured to have at least two or more water supply paths independently for the branch pipe.
The reactor according to claim 2. The multistage water supply means has a configuration in which the branch pipe includes a first water supply path having at least two or more water supply ports and a second water supply path having at least one or more water supply ports. Is,
The reactor according to claim 2. The multi-stage water supply means includes a temperature raising step in which a part of the chemical heat storage material undergoes a hydration reaction, and a heat generated by the supply water vaporizing while all or part of the chemical heat storage material undergoes a hydration reaction. A control unit that controls the external water supply unit so that at least a two-stage process of a water vapor generation process that generates water vapor is performed over time.
The reactor according to claim 1. The multi-stage water supply means includes a plurality of outlets so that a larger amount of water is supplied from a vertical central portion to an upper portion of the chemical heat storage material than to a vertical lower portion of the chemical heat storage material. Is spatially divided into two stages,
The reactor according to claim 1. The multi-stage water supply means is configured to perform a temperature raising process by supplying water to the upper part in the vertical direction of the chemical heat storage material and a water vapor generation process by uniformly supplying water to all of the chemical heat storage material. The control unit controls the external water supply unit to supply water to the chemical heat storage material in two stages temporally and spatially.
The reactor according to claim 1. The control unit switches from the temperature raising step to the water vapor generation step when the detection value of the internal pressure detection unit that detects the internal pressure of the heat storage material accommodation space is equal to or greater than a predetermined threshold.
The reactor according to claim 5 or 7. When the detection value of the temperature detection unit that detects the temperature of the chemical heat storage material is equal to or higher than a predetermined threshold, the control unit switches from the temperature raising step to the water vapor generation step.
The reactor according to claim 5 or 7. The control unit controls the external water supply unit so that water having an allowable water content of the chemical heat storage material is supplied to the chemical heat storage material in the temperature raising step.
The reactor according to claim 5 or 7. The heat exchanger has a porous film having water retention between the plurality of discharge ports and the chemical heat storage material.
The reactor according to any one of claims 1 to 10. The water supply port of the branch pipe is formed in the lower part in the vertical direction of the heat exchanger,
The reactor according to any one of claims 1 to 11.