JP6443714B2 - Steam generating apparatus, adsorbent container, and steam generating method - Google Patents

Description

  The present invention relates to a steam generation apparatus and a steam generation method.

  With the background of fossil fuel resource constraints and global warming issues, further demands for energy conservation are increasing. For example, Patent Document 1 discloses a zeolitic superheated steam generating device that generates superheated steam by reversibly adsorbing and desorbing water with respect to zeolite using natural energy. Further, for example, in Patent Document 2, as a cogeneration system using a gas engine or a fuel cell, water is passed when the adsorber is in the adsorption process, and when the adsorber is in the regeneration process, An adsorption heat pump system configured to pass clean water through a condenser connected to the adsorber is disclosed. Patent Document 2 discloses that the adsorber is filled with an adsorbent such as silica gel and zeolite.

Japanese Patent No. 4621816 JP 2006-29605 A

  For example, in the steel industry and the petrochemical industry, a large amount of hot water of 50 to 100 ° C. is generated. Such waste water has been discarded without being recovered because it has a low temperature to be used as renewable energy. On the other hand, such waste hot water has a high temperature to be discarded, and therefore, heat is dissipated and discarded using a cooling tower or the like. In other words, additional energy had to be used for disposal. Therefore, the present inventors paid attention to a steam generation apparatus using zeolite in order to recover such waste water that has been conventionally discarded and generate regenerated energy. Moreover, in the system using this steam production | generation apparatus, when collect | recovering waste temperature water and producing | generating regeneration energy, it is calculated | required that regeneration energy (water vapor | steam) can be produced | generated continuously. In other words, when using a vapor generating apparatus using zeolite, it is possible to reversibly repeat the adsorption and desorption of water on the zeolite, and a technique capable of continuously generating water vapor is required.

  In view of the above problems, the present invention is a technology that can generate water vapor from waste water at 50 to 100 ° C., and can continuously generate water vapor with less energy consumption than waste water discharge using a cooling tower or the like. The issue is to provide.

  In the present invention, in order to solve the above-described problem, 50 to 100 ° C. waste water is adsorbed on zeolite, and steam is generated by heat of adsorption at that time. Further, in the present invention, dry air having a dew point of −20 ° C. or less is supplied to desorb (regenerate) and regenerate the adsorbed water of a porous body such as zeolite.

Specifically, the present invention includes a zeolite housing portion filled with zeolite therein, a hot water supply portion that supplies hot water of 50 to 100 ° C. to the zeolite housing portion, and the hot water to the zeolite in the zeolite housing portion. Dry air with a dew point of −20 ° C. or less is supplied to the steam discharge part for discharging the steam generated by the adsorption and the zeolite housing part, and the adsorbed water adsorbed on the zeolite is desorbed to regenerate the zeolite. And a dry air supply unit.

  In the steam generating apparatus according to the present invention, the zeolite filled in the zeolite housing part and the hot water supplied from the hot water supply part come into contact with each other, and steam is generated by the heat of adsorption generated at that time. Examples of the hot water include 50 to 100 ° C. waste water that has been discarded without being collected in the steel industry and petrochemical industry. In the steam generation apparatus according to the present invention, water vapor can be generated from waste hot water that has been conventionally discarded. In addition, conventionally, waste heat water must be disposed of separately, for example, by cooling with a cooling tower. However, according to the steam generator according to the present invention, it is not necessary to use such wasteful energy for disposal. Moreover, the water vapor | steam produced | generated with the vapor | steam production | generation apparatus which concerns on this invention can be utilized by a production process etc., and the heat which was discarded conventionally can be passed on to high quality energy. Furthermore, the steam generating apparatus according to the present invention includes a dry air supply unit, so that the adsorbed water adsorbed on the zeolite can be effectively desorbed. As a result, regeneration of the zeolite is promoted, and water vapor can be continuously generated.

  The principle of an adsorption heat pump that uses the adsorption heat of zeolite has been conventionally known, for example, as described in Patent Document 2 (Japanese Patent Laid-Open No. 2006-29605). However, in general, a heat exchanger is built in a steam generator filled with zeolite, and water is supplied to the heat exchanger to be heated / cooled to generate (desorb) / adsorb steam. It was an indirect heat exchange system. Therefore, the conventional adsorption heat pump has a heat exchange performance as compared with the direct heat exchange method in which the supply hot water itself is heated by the adsorption heat of the zeolite and the hot water to generate steam, such as the steam generation apparatus according to the present invention. However, there is a problem that the system becomes more complicated when the heat exchange performance is improved. On the other hand, the steam generator according to the present invention does not have a built-in heat exchanger and has a simpler configuration than the conventional one, but can generate steam using the discarded warm water. Note that another porous body may be used instead of zeolite. Examples of other porous materials include silica gel, alumina, titanium oxide, and polymer sorbent.

  Here, the steam generation apparatus according to the present invention includes a plurality of the zeolite storage unit, the hot water supply unit, and the dry air supply unit, wherein the plurality of zeolite storage units are arranged in parallel, the hot water supply unit, And a control unit for controlling the dry air supply unit, the control unit, the timing of the supply of hot water by each hot water supply unit so that the adsorption and desorption of zeolite in each zeolite storage unit is continuously performed, and You may make it control the timing of supply of the dry air by each dry air supply part.

  Provided with a plurality of zeolite accommodating parts, etc., and the plurality of zeolite accommodating parts are arranged in parallel, so that even if the zeolite of one zeolite accommodating part is desorbed, it is adsorbed by the zeolite of the other zeolite accommodating part be able to. Therefore, water vapor can be generated more continuously as the entire apparatus.

  Moreover, the said warm water supply part may be provided in the lower part of the said zeolite accommodating part, and the said steam discharge part may be provided in the upper part of the said zeolite accommodating part. By supplying the hot water from the lower part of the zeolite, the distribution of the hot water in the horizontal direction can be made uniform. Moreover, the water vapor | steam produced | generated uniformly from the horizontal cross section of a zeolite can be discharged | emitted from the upper part of a zeolite.

  The hot water supply unit may be provided on the upper part of the zeolite storage unit. In this case, in order to suppress heat exchange between the generated water vapor and the supplied hot water, it is preferable that the steam discharge part is provided at the lower part of the zeolite housing part.

  Moreover, the said zeolite accommodating part may have a some zeolite layer inside. Although the number of zeolite layers may be one, water vapor can be generated more efficiently by using a plurality of zeolite layers. For example, a function may be assigned to each zeolite layer such that the lower zeolite layer is used for preheating and the upper zeolite layer is used for steam generation. By doing in this way, water vapor | steam can be produced | generated more efficiently.

  The dry air supply unit may supply the dry air so that the speed of the dry air in the zeolite housing unit is 1.5 m / sec or less. Thereby, when reproducing | regenerating a zeolite, the drift of the reproduction | regeneration air which exists in a zeolite accommodating part can be suppressed.

  Moreover, the structure which further comprises the warm water heating part which heats the warm water supplied from the said warm water supply part may be sufficient as the steam generation apparatus which concerns on this invention. Thereby, the ability to generate water vapor can be further improved.

  The steam generator according to the present invention adjusts the temperature of the dry air supplied from the dry air adjusting unit and the humidity of the dry air supplied from the dry air adjusting unit. It may be configured to further include at least one of a humidity adjusting unit for dry air to be performed. By providing the temperature adjustment unit, for example, the ability to regenerate zeolite can be further improved by increasing the temperature of the supplied dry air. In addition, by providing the humidity adjusting unit, for example, by reducing the humidity of the supplied dry air, the moisture in the zeolite can be removed more efficiently. As a result, the ability to regenerate the zeolite can be further improved.

  The steam generation apparatus according to the present invention may further include a deaeration unit that evacuates and degass the air in the zeolite storage unit after regeneration of the zeolite. Thereby, it can suppress that air exists in the produced | generated water vapor | steam.

  Moreover, the structure which further comprises the preheating part which supplies a part of the vapor | steam discharged | emitted from the said steam discharge part to the said zeolite accommodating part, and preheats the zeolite in the said zeolite accommodating part may be sufficient as the steam production | generation apparatus which concerns on this invention. Thereby, it becomes possible to pre-heat a part of zeolite, As a result, the capability to produce | generate water vapor | steam can be improved more.

  Further, the steam generating device according to the present invention is configured to supply hot water by the hot water supply unit or supply dry air by the dry air supply unit based on temperature information or pressure information in the zeolite storage unit. The structure which further has a control part which controls timing may be sufficient. Thereby, the production | generation of water vapor | steam and the reproduction | regeneration of a zeolite can be performed more efficiently.

  Here, when the zeolite filled in the zeolite housing portion and the hot water supplied from the hot water supply portion come into contact with each other and generate water vapor by the heat of adsorption generated at that time, the zeolite housing portion rapidly changes in temperature (for example, Temperature rise). In addition, for example, if the temperature of the zeolite housing part rapidly rises and the temperature of the zeolite housing part becomes too high, the amount of adsorption of the zeolite housing part may be reduced. Further, it is conceivable that the zeolite housing part is damaged when the temperature of the zeolite housing part is rapidly changed. Therefore, the present invention may relieve such a temperature change in the zeolite housing portion.

Specifically, in the steam generating apparatus according to the present invention, the zeolite container may include a non-adsorbing filler in addition to zeolite as a porous body. By filling the zeolite housing part with the non-adsorbing filler, a rapid temperature change in the zeolite housing part can be suppressed. In other words, the temperature of the zeolite housing part can be controlled. As a result, it is possible to suppress a decrease in the amount of adsorption of the zeolite accommodating part, which is a concern when the temperature of the zeolite accommodating part is too high. Moreover, the adsorption amount of a zeolite accommodating part can be improved, and water vapor | steam can be produced | generated more efficiently. Furthermore, it is possible to suppress deterioration and breakage of the zeolite housing part due to a rapid temperature change of the zeolite housing part. Examples of the non-adsorbing packing include glass beads and alumina.

  Further, the non-adsorbing packing may change the filling ratio with respect to the zeolite housing portion according to the temperature change in the zeolite housing portion. The value of the temperature change in the zeolite container can be obtained by experiments or the like. For example, when the hot water supply unit is provided in the lower part of the zeolite housing part, the temperature of the upper part of the zeolite housing part is higher than that of the lower part. That is, the temperature change of the zeolite accommodating portion is different for each region. Therefore, the filling ratio of the non-adsorbing filler may be changed according to the temperature change in the region where the temperature is assumed to be highest. As a result, the temperature of the zeolite housing part can be controlled more effectively, the adsorption amount of the zeolite housing part can be further improved, and water vapor can be generated more efficiently. In addition, it is possible to more reliably suppress the deterioration or breakage of the zeolite housing part due to the rapid temperature change of the zeolite housing part. In addition, you may change the filling ratio of a non-adsorbing packing according to the temperature change of the average temperature of a zeolite accommodating part. Further, the non-adsorbing filler may have a different filling ratio with respect to the zeolite accommodating portion based on a temperature change for each region in the zeolite accommodating portion. Thereby, for example, the non-adsorptive packing can be filled only in the region where the temperature change is assumed.

  Here, the present invention can also be specified as a steam generation method. For example, in the present invention, a hot water supply step of supplying hot water of 50 to 100 ° C. to a zeolite containing part filled with zeolite inside, and steam generated by adsorbing the hot water to the zeolite in the zeolite containing part A steam generation method comprising: a steam discharge step for discharging; and a dry air supply step for supplying dry air having a dew point of −20 ° C. or less to the zeolite accommodating portion to regenerate the zeolite. According to the steam generation method of the present invention, water vapor can be generated from 50 to 100 ° C. waste water, and water can be continuously generated with less energy consumption than waste water waste.

  The zeolite storage unit, the hot water supply unit, and the dry air supply unit are provided in plural, and further includes a control step for controlling the hot water supply unit and the dry air supply unit. You may make it control the timing of supply of the warm water by each warm water supply part, and the timing of the supply of dry air by each dry air supply part so that adsorption and desorption of the zeolite in a part may be performed continuously.

  In the hot water supply step, hot water may be supplied from the lower part of the zeolite accommodating part, and in the steam discharge step, the steam may be discharged from the upper part of the zeolite accommodating part. Moreover, you may supply warm water from the upper part of the said zeolite accommodating part at the said warm water supply step. In this case, in the steam discharge step, it is better to discharge the steam from the lower part of the zeolite accommodating part.

  Further, in the dry air supply step, the dry air may be supplied so that the speed of the dry air in the zeolite accommodating unit is 1.5 m / sec or less.

  The steam generation method according to the present invention may further include a warm water warming step for warming the warm water supplied in the warm water supply step.

Further, the steam generation method according to the present invention adjusts the temperature of the dry air supplied in the dry air adjustment step, and adjusts the humidity of the dry air supplied in the dry air adjustment. It may further include at least one of a humidity adjustment step for dry air.

  The steam generation method according to the present invention may further include a degassing step of degassing the vacuum in the zeolite container after the regeneration of the zeolite.

  The steam generation method according to the present invention may further include a preheating step of supplying a part of the steam discharged in the steam discharge step to the zeolite storage unit and preheating the zeolite in the zeolite storage unit.

  Further, the steam generation method according to the present invention is based on the temperature information or pressure information in the zeolite housing part, and the supply timing of the hot water in the hot water supply step or the supply of dry air in the dry air supply step. A control step for controlling the timing may be further provided.

  According to the present invention, it is possible to provide a technique capable of generating water vapor from waste water having a temperature of 50 to 100 ° C. and capable of continuously generating water vapor with less energy consumption than waste water discharged using a cooling tower or the like. it can.

FIG. 1 shows an adsorption and regeneration cycle in the steam generator according to the first embodiment. FIG. 2 shows a configuration of a system including a steam generator according to the first embodiment. FIG. 3 shows a cross-sectional view of the steam generator according to the first embodiment. FIG. 4 shows an example of the open / close state of various valves in the system including the steam generator according to the first embodiment. FIG. 5 shows the positional relationship between water supply and steam exhaust in the steam generator according to the first embodiment. FIG. 6 shows a cross-sectional view of a steam generator according to the second embodiment. FIG. 7 shows a cross-sectional view of a steam generator according to the third embodiment. FIG. 8 shows a configuration of a system including a steam generator according to the fourth embodiment. FIG. 9 shows an example of an open / close state of various valves in a system including a steam generator according to the fourth embodiment. FIG. 10A shows an installation example of a temperature sensor in the steam generator according to the fifth embodiment. FIG. 10B shows the relationship between the temperature of the zeolite and the elapsed time when the regeneration process is completed for the steam generator according to the fifth embodiment. FIG. 10C shows a processing flow performed when the regeneration process is completed for the steam generator according to the fifth embodiment. FIG. 11A shows an installation example of a pressure sensor in the steam generator according to the sixth embodiment. FIG. 11B shows the relationship between the pressure in the steam generator and the elapsed time when the decompression step is finished for the steam generator according to the sixth embodiment. FIG. 11C shows a processing flow performed when the decompression step is finished for the steam generator according to the sixth embodiment. FIG. 12A shows an installation example of a temperature sensor in the steam generator according to the seventh embodiment. FIG. 12B shows the relationship between the temperature in the steam generator and the elapsed time when the water supply process is finished for the steam generator according to the seventh embodiment. FIG. 12C shows a processing flow performed when the water supply process is finished for the steam generator according to the seventh embodiment. FIG. 13A shows an installation example of a temperature sensor in the steam generator according to the eighth embodiment. FIG. 13B shows the relationship between the temperature in the steam generator and the elapsed time when the adsorption step is finished for the steam generator according to the eighth embodiment. FIG. 13C shows a processing flow performed when the adsorption process is completed for the steam generator according to the eighth embodiment. FIG. 14A shows an installation example of various sensors in the steam generator according to the ninth embodiment. FIG. 14B-1 shows the relationship between the dew point in the steam generator and the elapsed time when the regeneration process is completed for the steam generator according to the ninth embodiment. FIG. 14B-2 shows the relationship between the pressure difference in the steam generator and the elapsed time when the regeneration process is finished for the steam generator according to the ninth embodiment. FIG. 14B-3 shows the relationship between the temperature in the steam generator and the elapsed time when the regeneration step is finished for the steam generator according to the ninth embodiment. FIG. 14C shows a processing flow performed when the regeneration process is finished for the steam generator according to the ninth embodiment. FIG. 15A shows a graph of an example of a temperature change of the zeolite layer according to the comparative example. FIG. 15B shows the measurement points in the graph of FIG. 15A. FIG. 16 shows a graph of the average temperature change of the zeolite layer performed in the laboratory apparatus. FIG. 17 shows an outline of a laboratory apparatus.

<Background>
With the background of fossil fuel resource constraints and global warming issues, further demands for energy conservation are increasing. As a result of the oil crisis, energy consumption in the industrial sector has grown substantially in other transportation and consumer sectors, but has almost zero growth, but has accounted for a majority of total consumption so far. The above reduction is required.

  For example, steelworks in the steel field use pure water to cool converter hoods, molds for continuous casting equipment, skids for steel heating furnaces, and the like. The outlet temperature of the cooling water is as low as 60 to 90 ° C., and its exhaust heat is difficult to recover by the conventional technology. Therefore, it is cooled using energy in a cooling tower provided with a fan and discarded to the atmosphere. Such unused hot water waste heat is generated at 1000 to 2000 t / h in an ironworks with a crude steel production of 10 million t / year.

On the other hand, CO ₂ separation and capture are in two fields, CCS and innovative steelmaking processes.
ol Earth-positioned as the core technology of the energy innovation technology plan, COURSE50 (innovative steelmaking process technology development) is one of the major strategic businesses of NEDO (New Energy and Industrial Technology Development Organization) for steel. It has been. Among the COURSE 50, the amine method (wet CO ₂ adsorption method), which is expected to be put into practical use, requires a heat source for heating the amine liquid (CO ₂ adsorption liquid) to 120 ° C. or higher. Further, COURSE50 is to achieve a CO ₂ reduction of CO ₂ separation by △ 10% or more as a target, the crude steel production 2,000,000 t-CO ₂ / year or more at 10 million t / year scale of steelworks It is necessary to separate CO ₂ , which requires a heat source equivalent to 1.8 million t-steam / year in terms of 140 ° C. water vapor (assuming a temperature difference of 20 ° C. from 120 ° C. amine liquid).

This amount of water vapor is almost equal to the total amount of water vapor currently used at steelworks, and at domestic steelworks where most of the recoverable high-temperature exhaust heat generated from blast furnaces has already been recovered with steam, more steam can be obtained using conventional technology. It is impossible to recover and secure the amount necessary for CO ₂ separation. Therefore, Coo
l In order to promote the introduction of CO ₂ separation technology according to the roadmap of the Earth-energy innovation technology plan, install boilers that use fossil fuels, or use energy sources of facilities that previously used steam for more value such as electricity. It will be necessary to transfer to higher energy. Of course, CO ₂ can also be reduced by these means, but these methods go against rationalizing the use of energy and cause a large cost increase. Therefore, it is extremely important to develop and put into practical use a technology that regenerates and regenerates the energy required for CO ₂ separation from the waste heat of unused hot water that was previously discarded. On the other hand, energy consumption in the chemical industry is the second largest after that in the steel industry, accounting for 7% of total carbon dioxide emissions. In particular, the energy consumption in the petrochemical industry accounts for 53% of the chemical industry. However, the energy efficiency of the petrochemical manufacturing plant is at the highest level in the world, so the development of innovative energy-saving technology is an urgent issue. According to NEDO 2009 Eco-Innovation Promotion Project “Exploratory Research on Innovative Energy Conversion in Petrochemical Industry” (2009 Results Report 09002771-0, 09002773-0) Another energy amount is extremely large in the amount of energy utilization of steam at 143 ° C. or higher. In addition, from the data for each exhaust temperature region regarding the waste heat water and exhaust heat amount of exhaust gas related to the manufacture of similar petrochemical products, the waste heat water of 30-50 ° C and the exhaust gas of about 80-150 ° C are the main unused waste heat. It has been reported that when the reference temperatures of hot water and exhaust gas are 30 ° C. and 80 ° C., respectively, the energy amount corresponds to 74% of the steam energy used during the production. From such a current situation, it can be said that there is an extremely high need for a steam generating heat pump having an unused waste heat of 50 to 100 ° C. (hot water waste heat) and 140 ° C.

<Overview>
Based on the above-mentioned background, the present inventors decided to use a steam generator using zeolite in order to collect waste heat water that was conventionally discarded and generate regenerated energy. The steam generator is an adsorption heat pump. Here, FIG. 1 shows an adsorption and regeneration cycle in the steam generator according to the first embodiment. Waste water is adsorbed onto the zeolite from the reference state (state 1), and the temperature of the steam generator is preheated to the steam temperature (state 2) (A: preheating step). Thereafter, the pressure is further increased, and the exhausted water supplied into the steam generator is heated by the adsorption heat of the zeolite to generate steam at the target temperature (state 3) (B: adsorption process). The above operation is mainly performed by controlling the pressure. Thereafter, the pressure is reduced (pressure reduction step), and after reaching state 4, the zeolite particles are brought into contact with the reduced pressure operation and dry air to return to state 1 (CD: regeneration (desorption) step).

  The principle of an adsorption heat pump using the adsorption heat of zeolite has been conventionally known. However, a conventional adsorption heat pump (for example, Patent Document 2 (Japanese Patent Laid-Open No. 2006-29605)) has a heat exchanger built in the steam generator, and heat / cooling is performed by supplying water to the heat exchanger. This is an indirect heat exchange system in which steam generation (desorption) / vapor adsorption is performed, and heat exchange performance is poor compared to the direct heat exchange system, and heat loss increases due to an increase in the heat capacity of the heat exchange mechanism, resulting in a complicated system. There was a problem. In order to solve such problems, in the steam generator using the zeolite according to the embodiment, the hot water is directly supplied to the zeolite in the steam generator, and the supplied hot water is heated by the adsorption heat of the zeolite and the hot water. A direct heat exchange system that generates steam was adopted. In the regeneration step, the zeolite was regenerated using dry air having a dew point of −20 ° C. or lower. Details will be described below.

<Embodiment>
Next, embodiments of the present invention will be described with reference to the drawings. The embodiment described below is merely an example, and the present invention is not limited to the embodiment described below.

<First Embodiment>
<< Configuration of Steam Generator >>
FIG. 2 shows a configuration of a system 100 including a steam generator according to the first embodiment. FIG. 3 shows a cross-sectional view of the steam generator according to the first embodiment.

  A system 100 according to the first embodiment includes a steam generator 4, a feed water pump 5, a hot water supply pipe 11, a steam supply pipe 12, a compressed air supply pipe 13, a regeneration air supply pipe 9, a vacuum exhaust pipe 16, a drain pipe 14, An exhaust pipe 15 and a control device 20 are provided.

  The steam generator 4 (corresponding to the zeolite accommodating part of the present invention) accommodates zeolite inside. As shown in FIG. 3, the steam generator 4 is provided at the lower part of the zeolite layer 41 filled with granular zeolite, is provided at the lower metal mesh 42 for receiving the zeolite layer 41, and at the upper part of the zeolite layer 41. An upper metal mesh 43 for preventing the scattering of zeolite, a supply port / regeneration air discharge port 45 for receiving supplied hot water and discharging regeneration air, a regeneration air supply port 46 for receiving regeneration air sent to regenerate zeolite The generated steam discharge port 47 for discharging the generated steam and a mounting port 48 such as a pressure sensor or a temperature sensor are provided. The steam generator 4 according to the first embodiment is a so-called first type pressure vessel. In the steam generator 4, the supplied hot water is adsorbed by the zeolite, and steam is generated by the heat of adsorption.

  The feed water pump 5 is provided in the hot water supply pipe 11 through which hot water flows, and pumps hot water (waste water) at 50 to 100 ° C. One end of the hot water supply pipe 11 is connected to a pipe (not shown) through which hot water (waste hot water) from the steel facility or petrochemical facility flows, branches in the middle of the hot water supply pipe 11, and the other end of the steam generator 4. It is connected to a supply port / regeneration air discharge port 45 below (4-1, 4-2, 4-3). In the hot water supply pipe 11, in addition to the water supply pump 5, a warm water warming device 6 for warming warm water downstream of the water feed pump 5, a steam generator 4 (4-1, 4-2, 4-3). There are provided water supply valves 23-1, 23-2 and 23-3 that can adjust the amount of water supplied to the water. The water supply pump 5, the hot water supply pipe 11, and the water supply valves 23-1, 23-2, and 23-3 function as the hot water supply unit of the present invention.

The steam supplied from the steam generator 4 flows through the steam supply pipe 12 and supplies the steam to the equipment or the like that uses the steam outside the steam generator 4 or the facility that can use the steam. One end of the steam supply pipe 12 is connected to the generated steam discharge port 47 at the upper part of each steam generator 4-1, 4-2, 4-3, the steam supply pipe 12 joins, and the other end uses steam. The generated steam is used as regenerative energy by connecting to possible equipment and facilities (shower room, sauna, sterilization room, etc.). The connection destination of the steam supply pipe 12 only needs to be able to use steam, and is not limited to the use device or facility. The discharged steam can be used, for example, for CO ₂ separation in an ironworks. Steam supply pipe 1
2, steam supply valves 21-1, 21-2 and 21-3 are provided in the vicinity of the steam generators 4-1, 4-2 and 4-3 (steam supply pipes before joining) to generate steam. It is possible to switch between supply and non-supply of steam generated in the vessel 4. The steam supply pipe 12 and the steam supply valves 21-1, 21-2, and 21-3 serve as the steam exhaust section of the present invention.

  The compressed air supply pipe 13 flows air compressed by a compressor (not shown) or the like, and supplies the compressed air to the steam generators 4-1, 4-2, 4-3. One end of the compressed air supply pipe 13 is connected to a compressor or the like (not shown), and the other end is connected to the regeneration air supply port 46 at the upper part of each steam generator 4-1, 4-2, 4-3. The compressed air supply pipe 13 is provided with purge air valves 26-1, 26-2, 26-3.

The regeneration air supply pipe 9 is adjusted in temperature and humidity, flows air for regenerating zeolite (corresponding to the dry air of the present invention), and the steam and generator 4-1 are supplied with the adjusted temperature and humidity. , 4-2, 4-3. One end of the regenerative air supply pipe 9 is connected to the blower 1, and after branching, the other end is connected to a regenerative air supply port 46 at the top of each steam generator 4-1, 4-2, 4-3. In the first embodiment, the regeneration air supply pipe 9 (a part of the regeneration air supply pipe 9 after branching) on each steam generator 4-1, 4-2, 4-3 side and each steam generator 4-1, The compressed air supply pipe 13 on the 4-2 and 4-3 side (a part of the compressed air supply pipe 13 after branching) is a common pipe. The regeneration air supply pipe 9 is provided with a dehumidifier 2 for dehumidifying the air flowing through the regeneration air supply pipe 9 on the downstream side of the blower 1, and the air flowing through the regeneration air supply pipe 9 is added to the downstream side of the blower 1. A warming device 3 for regenerating air to be heated is provided. Of the regeneration air supply pipe 9, the regeneration air supply pipe 9 after branching is further provided with regeneration air valves 24-1, 24-2, and 24-3. The regenerative air supply pipe 9, the blower 1, and the regenerative air valves 24-1, 24-2, 24-3 function as the dry air supply unit of the present invention. Moreover, the dehumidifier 2 is corresponded to the humidity adjustment part of the dry air of this invention. The regenerative air heating device 3 corresponds to the dry air temperature adjusting unit of the present invention.

  In the vacuum exhaust pipe 16, air evacuated from each of the steam generators 4-1, 4-2, 4-3 flows. One end of the vacuum exhaust pipe 16 is connected to the supply port / regeneration air exhaust port 45 below each steam generator 4-1, 4-2, 4-3, and the other end is connected to each steam generator 4 after joining. Open to the outside of -1,4-2,4-3. Among the vacuum exhaust pipes 16, the combined vacuum exhaust pipe 16 is provided with a vacuum exhaust pipe pump 7, and the vacuum exhaust pipe 16 before the joint has vacuum exhaust valves 25-1, 25-2, 25-3. Is provided. The vacuum exhaust pipe 16, the vacuum exhaust pipe pump 7, and the vacuum exhaust valves 25-1, 25-2, and 25-3 serve as the deaeration unit of the present invention.

  When exhausting the air remaining in each steam generator 4-1, 4-2, 4-3 after steam generation, the exhaust pipe 15 flows the exhausted air. The exhaust pipe 15 is once connected to the supply port / regeneration air discharge port 45 of each steam generator 4-1, 4-2, 4-3, and the other end is connected to each steam generator 4-1, 4 after joining. It is open to the outside of -2, 4-3. Exhaust valves 22-1 2-2 and 22-3 are provided in the exhaust pipe 15 before joining.

  When draining the hot water remaining in the steam generators 4-1, 4-2, 4-3 after steam generation, the drain pipe 14 flows the warm water to be discharged. One end of the drain pipe 14 is connected to the supply port / regeneration air discharge port 45 of each steam generator 4-1, 4-2, 4-3, and the other end is connected to each steam generator 4-1, 4 after joining. It is open to the outside of -2, 4-3. Drain valves 27-1, 27-2, 27-3 are provided in the drain pipe 14 before joining.

  The control device 20 controls the timing of supplying hot water, the timing of supplying regenerated air, and the like based on the temperature information or pressure information in each steam generator 4-1, 4-2, 4-3. The control device 20 includes a CPU (Central Processing Unit), a memory, an operation unit, a display unit, and the like, and the CPU executes a control program stored in the memory, thereby controlling the timing of supplying hot water and supplying dry air. Control timing etc. The control device 20 includes a temperature sensor and a pressure sensor (not shown in FIG. 3), a feed water pump 5, a warm water warming device 6, a compressor (not shown) of each steam generator 4-1, 4-2, 4-3. 1), blower 1, dehumidifier 2, regenerative air heating device 3, vacuum exhaust pipe pump 7, various valves (water supply valves 23-1, 23-2, 23-3, steam supply valve 21) -1,21-2, 21-3, purge air valves 26-1, 26-2, 26-3, regeneration air valves 24-1, 24-2, 24-3, vacuum exhaust valves 25-1, 25- 2, 25-3, exhaust valves 22-1, 22-2, 22-3, drain valves 27-1, 27-2, 27-3), etc. Heating device 6, compressor (not shown), blower 1, dehumidifier 2, regenerative air heating device 3, vacuum exhaust pipe pump 7, various valves To control the operation. In FIG. 3, all devices and various valves can be controlled by the control device 20, but a control device is provided for each device and each valve, and each device and each valve individually operates according to time. You may make it control.

<< Operation example >>
FIG. 4 shows an example of the open / close state of various valves in the system including the steam generator according to the first embodiment. As described with reference to FIG. 1, in the steam generator according to the first embodiment, the preheating step, the adsorption step, the decompression step, and the regeneration step (desorption step) are repeatedly performed. In FIG. 4, an adsorption process (corresponding to the preheating process and the adsorption process in FIG. 1), a discharge process (corresponding to the decompression process in FIG. 1), a regeneration process (corresponding to the regeneration process in FIG. 1), and a deaeration process ( It is divided into preparatory steps for shifting to the adsorption step), and the open / close states of various valves and schematic operation times in each step are shown.

  Taking the steam generator 4-1 shown in the upper part of FIG. 4 as an example, each steam generator 4-1 starts with a discharge process, continues with a regeneration process, a deaeration process, and an adsorption process. The regeneration process, degassing process, and adsorption process are repeated.

  The discharge process is performed after the adsorption process. In the discharge process, the drain valve 27-1 and the purge air valve 26-1 are opened, the water supply valve 23-1, the steam supply valve 21-1, the exhaust valve 22-1, and the regeneration. The air valve 24-1 and the vacuum exhaust valve 25-1 are closed. As a result, the hot water remaining in the steam generator 4-1 is discharged while the compressed air is supplied. When the discharging process is completed, the process proceeds to the regeneration process.

  In the regeneration process, the regeneration air valve 24-1 and the exhaust valve 22-1 are opened, the purge air valve 26-1, the vacuum exhaust valve 25-1, the water supply valve 23-1, the drain valve 27-1, and the steam supply valve 24, respectively. Each valve of -1 is closed. Regenerated air is supplied to the dehumidifier 2 by the blower 1. In the dehumidifier 2, the dew point of the regenerated air is dried to −20 ° C. or less and supplied to the air heating device 3. The dehumidifier 2 includes a rotor to which an adsorbent such as zeolite is attached. The flow rate of the regenerated air flowing in the regenerated air supply pipe 9 or in the duct (not shown) matches the flow rate (1.5 m / sec) in the steam generator 4 in the regenerated air supply pipe 9 or in the duct. It can be installed according to the diameter. The flow rate in the steam generator 4 is such that, for example, the blower 1 is inverter-controlled so that the flow rate in the steam generator 4 is 1.5 m / sec, and regenerative air at a predetermined flow rate is supplied from the blower 1. The air volume can be further adjusted by the supply valves 21-1, 21-2, 21-3 and the exhaust valves 22-1, 22-2, 22-3. The predetermined flow rate of the regeneration air supplied from the blower 1 and the adjustment of the air volume by each steam valve can be appropriately set according to the diameter and length of the regeneration air supply pipe 9 and the duct. The flow rate in the steam generator 4 is such that the blower 1 is operated at a constant output, and the steam supply valves 21-1, 21-2, 21-3 and the exhaust valves 22-1, 22-2, 22-3. May be used as a damper capable of adjusting the air volume, and the air volume flowing through each steam generator 4 may be adjusted. In this case, the flow rate of the regeneration air supplied from the blower 1 and the adjustment of the air volume by each steam valve can be appropriately set according to the diameter and length of the regeneration air supply pipe 9 and the duct. In the air heating device 3, the regenerated air is heated to about 120 ° C. and supplied to the steam generator 4-1. As a result, the adsorbed water adsorbed on the zeolite is desorbed and the zeolite is regenerated. When the regeneration process ends, the process proceeds to the deaeration process.

  In the deaeration process, the regeneration air valve 24-1, the exhaust valve 22-1, the steam supply valve 21-1, the water supply valve 23-1, the purge air valve 26-1, and the drain valve 27-1 are closed, The vacuum exhaust valve 25-1 is opened, and the inside of the steam generator 4-1 is deaerated by the vacuum pump 7. When the deaeration process is completed, the process proceeds to the adsorption process. In addition, after completion | finish of a reproduction | regeneration process, it can suppress that air mixes in the steam generator 4-1, by performing a deaeration process each time. As a result, corrosion of piping and equipment on the downstream side of the steam generator 4-1 can be suppressed.

In the adsorption process, the vacuum exhaust valve 25-1, the steam exhaust valve 21-1, the exhaust valve 22-1, the regeneration air valve 24-1, the purge air valve 26-1, and the drain valve 27-1 are closed and water is supplied. The valve 23-1 is opened and hot water is supplied to the steam generator 4-1 by the water supply pump 5. This water supply is performed until the zeolite layer 41 is immersed, specifically, until the hot water supplied reaches the upper wire mesh 43 that is the upper end of the zeolite layer 41. Control of water supply may be performed by a water level meter, or may be performed by a preset time. As a result, in the steam generator 4-1, the zeolite is immersed in the warm water, the warm water is adsorbed by the zeolite, and water vapor is generated by the adsorption reaction. Thereafter, the steam supply valve 21-1 is opened, and only the generated water vapor is discharged from the steam supply valve 21-1.

  The steam generator 4-2 operates at a different timing from the steam generator 4-1 (shown in the middle part of FIG. 4), and the steam generator 4-3 is synchronized with the steam generators 4-1 and 4-2. The operation is shifted (shown in the lower part of FIG. 4). And by each steam generator 4-1, 4-2, 4-3 having shifted timing, and repeating a process continuously, respectively, in the system 100 whole containing a steam generator, water vapor | steam is continuous. Generated automatically. The temperature of the generated steam was 125 to 155 ° C. (average 140 ° C.) as a result of the applicant's manufacturing and testing of the test apparatus, and it was confirmed that it could be sufficiently used for use on the load side. . However, the above values are only examples of experimental results, and the temperature of the generated steam is considered to be higher.

  FIG. 5 shows the positional relationship between water supply and steam exhaust in the steam generator according to the first embodiment. In the steam generator 4 according to the first embodiment, hot water is supplied from the lower part of the zeolite layer 41, and the generated water vapor is discharged from the upper part of the zeolite layer 41.

<< Effect >>
In the system 100 including the steam generator according to the first embodiment described above, the zeolite filled in the steam generator 4 and hot water (waste water) pumped by the feed water pump 5 come into contact with each other and are generated at that time. Water vapor is generated by the heat of adsorption. The generated water vapor is 140 ° C. or higher, and can be used as regenerative energy such as CO ₂ separation in ironworks. Examples of the hot water include 50 to 100 ° C. discharged hot water that has been exhausted without being collected in the steel industry and the petrochemical industry. Therefore, in the system 100 including the steam generator according to the first embodiment, it is possible to generate steam from the exhausted hot water that has been conventionally discarded. In addition, conventionally, waste energy must be separately used for the disposal of the warm water, for example, by cooling with a cooling tower. However, in the system 100 including the steam generator according to the first embodiment, such disposal is performed. There is no need to use the wasteful energy. Moreover, the water vapor | steam produced | generated with the vapor | steam production | generation apparatus which concerns on this invention can be utilized by a production process etc., and the heat which was discarded conventionally can be passed on to high quality energy. Furthermore, the system 100 including the steam generator according to the first embodiment includes a regeneration air supply pipe 9, a blower 1, regeneration air valves 24-1, 24-2, 24-3, a dehumidifier 2, and heating of regeneration air. By providing the device 3, the adsorbed water adsorbed on the zeolite can be effectively desorbed. As a result, regeneration of the zeolite is promoted, and water vapor can be continuously generated. In addition, each steam generator 4-1, 4-2, 4-3 is in a state where the timing is shifted, and the steam generation is performed by repeating the adsorption process, the discharge process, the regeneration process, and the degassing process continuously. In the entire system 100 including the vessel, water vapor can be continuously generated.

  Moreover, in the system 100 including the steam generator according to the first embodiment, since the hot water is supplied from the lower part of the zeolite layer 41, the distribution of the hot water in the horizontal direction can be made uniform. Moreover, the water vapor | steam produced | generated uniformly from the horizontal cross section of the zeolite layer 41 can be discharged | emitted from the upper part of a zeolite.

  Other embodiments will be described below, but the same components as those in the first embodiment will be denoted by the same reference numerals, and detailed description thereof will be omitted.

Second Embodiment
FIG. 6 shows a cross-sectional view of a steam generator according to the second embodiment. In the steam generator 4 according to the second embodiment, the hot water supply nozzle 200 is provided above the zeolite layer 41, and the generated steam discharge port 47 is provided below the zeolite layer 41. Hot water is supplied by the hot water supply nozzle 200 disposed above the zeolite layer 41. In order to hold the hot water in the steam generator 4, for example, a butterfly valve may be provided in the vicinity of the downstream side of the supply port / regeneration air discharge port 45 and closed. For example, when the steam generator 4-1 is described as an example, the drain valve 27-1, the vacuum exhaust valve 25-1, the exhaust valve 22-1, and the water supply valve 23-1 may be closed to cope with the problem. The generated water vapor is discharged from a generated steam discharge port 47 below the zeolite layer 41. As a result, heat exchange between the generated water vapor and the supplied hot water can be suppressed.

<Third Embodiment>
FIG. 7 shows a cross-sectional view of a steam generator according to the third embodiment. In the steam generator 4 according to the third embodiment, the zeolite layer 41 is provided in two stages at intervals in the vertical direction. Each zeolite layer 41 is provided on a lower metal mesh 42 that receives the zeolite layer 41, an upper part of the zeolite layer 41, and an upper metal mesh 43 that prevents the zeolite from being scattered during regeneration, and an attachment port 48 such as a pressure sensor or a temperature sensor. ing. The lower zeolite layer 41 is used for preheating, and the upper zeolite layer 41 is used for steam generation. A function is assigned to each zeolite layer 41. Hot water is preferably supplied from the lower side through the supply port / regeneration air outlet 45 so that the lower zeolite layer 41 is immersed. By soaking only the lower stage, higher temperature steam can be generated with a small supply amount. That is, water vapor can be generated more efficiently. Note that the zeolite layer 41 may be provided in three or more stages. Further, regeneration air may be supplied from between the upper and lower zeolite layers 41. In this case, compared with the case where the zeolite layer 41 has only one stage, the layer thickness of the zeolite layer 41 through which the regeneration air passes is reduced, and the blowing power of the regeneration air can be reduced.

<Fourth embodiment>
FIG. 8 shows a configuration of a system including a steam generator according to the fourth embodiment. In the fourth embodiment, branch pipes 12-1, 12-2, 12-3 branched from the steam supply pipes 12 connected to the steam generators 4-1, 4-2, 4-3 are provided. . Part of the generated water vapor flows through the branch pipes 12-1, 12-2, and 12-3. One end of each of the branch pipes 12-1, 12-2, and 12-3 is connected to the steam supply pipe 12, and the other end is connected to the hot water supply pipe 11 that supplies hot water to the adjacent steam generator 4-2. . The branch pipes 12-1, 12-2, 12-3 are provided with preheating steam valves 28-1, 28-2, 28-3, respectively.

  FIG. 9 shows an example of an open / close state of various valves in a system including a steam generator according to the fourth embodiment. In the system 100 including the steam generator according to the fourth embodiment, a preheating step is added after the deaeration step. In the preheating process, the preheating steam valves 28-1, 28-2, 28-3 are opened, and a part of the water vapor is supplied to the steam generator in the start stage of the adsorption process.

  In the fourth embodiment, for example, a part of the water vapor generated by the steam generator 4-1 is supplied to the steam generator 4-2 at the start stage of the adsorption process and then supplied. Therefore, it becomes possible to preheat the zeolite of another steam generator using a part of water vapor, and to improve the adsorption capacity. In the operation (operation mode) as in the fourth embodiment, the pipes around the steam generator 4 arranged in parallel (for example, the branch pipe 12-1 connected to the steam generator 4-1 and the steam generator). A drain pipe 14) connected to 4-2 is connected in series. In the operation as in the fourth embodiment, the state in which the zeolite layer 41 can no longer exhibit the predetermined heating capacity, in other words, the final stage of the adsorption process (before switching from the adsorption process to the decompression process) or the adsorption of the zeolite layer 41 It is preferable to be performed in a state where the performance is lowered. In the state where the zeolite layer 41 can no longer exhibit the predetermined heating ability as described above, all of the water vapor may be used for preheating.

<Fifth Embodiment>
FIG. 10A shows an installation example of a temperature sensor in the steam generator according to the fifth embodiment. FIG. 10B shows the relationship between the temperature of the zeolite and the elapsed time when the regeneration process is completed for the steam generator according to the fifth embodiment. FIG. 10C shows a processing flow performed when the regeneration process is completed for the steam generator according to the fifth embodiment.

  The steam generator 4 according to the fifth embodiment is provided with a temperature sensor 71 that detects the temperature of the zeolite layer 41. In the regeneration process, the control device 20 ends the regeneration process based on the time (t) set by the timer and the temperature (T) detected by the temperature sensor 71. Specifically, in the regeneration process, when the time (t) set in advance by the timer elapses, or when the temperature (T) detected by the temperature sensor 71 rises, the regeneration air is supplied. The regenerative air valves 24-1, 24-2, and 24-3 are controlled to be closed. Here, as shown in FIG. 10B, the temperature of the air after regeneration shows a behavior in which the temperature of the regeneration air temporarily decreases due to the latent heat of evaporation of residual water in the first half of the regeneration, and the temperature increases as the regeneration proceeds. Therefore, the control device 20 detects the temperature of the regenerated air with the temperature sensor 71 provided at the lower part of the zeolite layer 41, and the time (t) set by the above-mentioned timer is increased or the temperature (T). When either of the above conditions is satisfied, the regeneration process ends. As a result, the time required for the regeneration process can be optimized.

<Sixth Embodiment>
FIG. 11A shows an installation example of a pressure sensor in the steam generator according to the sixth embodiment. FIG. 11B shows the relationship between the pressure in the steam generator and the elapsed time when the decompression step is finished for the steam generator according to the sixth embodiment. FIG. 11C shows a processing flow performed when the decompression step is finished for the steam generator according to the sixth embodiment.

  The steam generator 4 according to the sixth embodiment is provided with a pressure sensor 81 that detects the pressure in the steam generator 4. In the decompression process, the control device 20 ends the decompression process based on the time (t) set by the timer and the pressure (P) detected by the pressure sensor 81. Specifically, in the decompression step, when the time (t) set in advance by a timer elapses or the pressure (P) detected by the pressure sensor 81 decreases and then reaches a predetermined pressure, the steam generator 4 The drain valves 27-1, 27-2, 27-3 for discharging the water are controlled so as to be closed. Here, as shown to FIG. 11B, the pressure in the steam generator 4 under pressure reduction shows the behavior which falls gradually. Therefore, the control device 20 detects the pressure (P) in the steam generator 4 by the pressure sensor 81, and either the time up of the time (t) set by the timer or the pressure (P) is satisfied. When the above condition is satisfied, the decompression step is completed. As a result, the time required for the decompression process can be optimized.

<Seventh embodiment>
FIG. 12A shows an installation example of a temperature sensor in the steam generator according to the seventh embodiment. FIG. 12B shows the relationship between the temperature in the steam generator and the elapsed time when the water supply process is finished for the steam generator according to the seventh embodiment. FIG. 12C shows a processing flow performed when the water supply process is finished for the steam generator according to the seventh embodiment. The water supply process means a process in which the water supply pump 5 supplies hot water in the adsorption process.

  In the steam generator 4 according to the seventh embodiment, a temperature sensor 72 that detects the temperature in the steam generator 4 is provided on the upper side of the zeolite layer 41. In the water supply process, the control device 20 ends the water supply process based on the time set by the timer and the temperature detected by the temperature sensor 72. Specifically, in the water supply process, when the time set in advance by the timer elapses or when the temperature detected by the temperature sensor 72 decreases and then reaches a predetermined temperature, the water supply valves 23-1, 23-2 23-3 is controlled to be closed. Here, as shown to FIG. 12B, the temperature in the steam generator 4 during feed water shows the behavior which falls gradually after it raises. Therefore, the control device 20 detects the temperature in the steam generator 4 by the temperature sensor 72, and ends the water supply process when either of the timer time-up or the temperature is satisfied. As a result, the time required for the water supply process can be optimized.

<Eighth Embodiment>
FIG. 13A shows an installation example of a temperature sensor in the steam generator according to the eighth embodiment. FIG. 13B shows the relationship between the temperature in the steam generator and the elapsed time when the adsorption step is finished for the steam generator according to the eighth embodiment. FIG. 13C shows a processing flow performed when the adsorption process is completed for the steam generator according to the eighth embodiment. Processing related to the end of the adsorption step is performed after the end of the water supply step described in the seventh embodiment.

  In the steam generator 4 according to the eighth embodiment, a temperature sensor 73 that detects the temperature in the steam generator 4 is provided at the top of the steam generator 4. In the adsorption process, the control device 20 ends the adsorption process based on the time (t) set by the timer and the temperature (T) detected by the temperature sensor 73. Specifically, in the adsorption process, when the time set in advance by a timer elapses or the temperature detected by the temperature sensor 73 decreases and then reaches a predetermined temperature, the steam supply valves 21-1 and 21-2. 21-3 are controlled to be closed. Here, as shown to FIG. 13B, the temperature in the steam generator 4 during feed water shows the behavior which falls gradually after a raise. Therefore, the control device 20 detects the temperature in the steam generator 4 by the temperature sensor 73 and satisfies either the time-up time (t) set by the timer or the temperature (T). Sometimes the adsorption process ends. As a result, optimization of the time required for the adsorption process can be realized.

<Ninth Embodiment>
FIG. 14A shows an installation example of various sensors in the steam generator according to the ninth embodiment. In FIG. 14A, only the periphery of the steam generator 4-1 is shown as an example. FIG. 14B shows the relationship between the dew point, pressure, temperature, and elapsed time in the steam generator when the regeneration process is completed for the steam generator according to the ninth embodiment. FIG. 14C shows a processing flow performed when the regeneration process is finished for the steam generator according to the ninth embodiment.

  The steam generator 4 according to the ninth embodiment is provided with a dew point sensor 92, a differential pressure sensor 91, and a temperature sensor 74. The dew point sensor 92 is provided in the exhaust pipe 15 and detects the dew point of the exhausted air. The differential pressure sensor 91 is provided in a pipe straddling the regeneration air supply pipe 9 and the exhaust pipe 15, and detects a differential pressure before and after the supply of regeneration air. The temperature sensor 71 is provided at a position lower than the zeolite layer 41 in the steam generator 4 and detects the temperature in the steam generator 4. In the regeneration process, the control device 20 performs at least one of the dew point (TD) detected by the dew point sensor 92, the differential pressure (P) detected by the differential pressure sensor 91, and the temperature (T) detected by the temperature sensor 74. When one of them reaches a predetermined value, the regeneration process is terminated. Specifically, at least one of the dew point (TD) detected by the dew point sensor 92, the differential pressure (P) detected by the differential pressure sensor 91, and the temperature (T) detected by the temperature sensor 74 is predetermined. When the value is reached, the regeneration air valves 24-1, 24-2, 24-3 are controlled to be closed. Here, as shown to FIG. 14B-1, the dew point (TD) in a reproduction | regeneration process shows the behavior which falls gradually. Moreover, as shown to FIG. 14B-2, the differential pressure | voltage (P) in a reproduction | regeneration process shows the behavior which rises gradually. Moreover, as shown to FIG. 14B-3, the temperature (T) in a reproduction | regeneration process shows the behavior which rises gradually after falling. Therefore, the control device 20 has at least one of the dew point (TD) detected by the dew point sensor 92, the differential pressure (P) detected by the differential pressure sensor 91, and the temperature (T) detected by the temperature sensor 74. When one reaches a predetermined value, the regeneration process is terminated. As a result, the time required for the regeneration process can be optimized.

<Tenth Embodiment>
In the steam generator 4 according to the tenth embodiment, the zeolite layer 41 is filled with a non-adsorbing filler (glass beads or alumina). About another point, it is the same as the structure of the steam generator 4 which concerns on 1st Embodiment (refer FIG. 2, FIG. 3). Therefore, also in the steam generator 4 according to the tenth embodiment, the other end of the hot water supply pipe 11 is connected to the steam generator 4 (4-1, 4-2, 4).
-3) and the lower supply port / regeneration air discharge port 45. Therefore, the hot water is supplied from the lower part of the zeolite layer 41.

  The non-adsorptive filler (glass beads or alumina) can change the filling ratio with respect to the zeolite layer 41 according to the temperature change of the zeolite layer 41. The value of the temperature change of the zeolite layer 41 can be obtained by experiments or the like. For example, the reference temperature of the maximum temperature when the temperature of the zeolite layer 41 rises is determined, and the reference filling amount of the non-adsorbing filler with respect to the reference temperature is determined. When the maximum temperature of the zeolite layer 41 obtained by the experiment is lower than the reference temperature, the amount of non-adsorbing packing less than the reference filling amount is filled, and the highest temperature of the zeolite layer 41 obtained by the experiment is filled. When the temperature is higher than the reference temperature, it is possible to fill a larger amount of non-adsorptive packing than the reference filling amount.

  Here, FIG. 15A shows a graph of an example of a temperature change of the zeolite layer according to the comparative example. FIG. 15B shows the measurement points in the graph of FIG. 15A. Regarding the measurement points, “NO.24” means the lower surface of the zeolite layer, “NO.16” means the lower part of the zeolite layer, “NO.10” means the middle part of the zeolite layer, “NO. 4” indicates the upper part of the zeolite layer.

  In the comparative example, unlike the steam generator according to the tenth embodiment, the zeolite layer is not filled with the non-adsorbing filler. In other words, the comparative example has a configuration close to the steam generator 4 according to the first embodiment. Therefore, in this comparative example, the other end of the hot water supply pipe is connected to the lower supply port / regeneration air discharge port of the steam generator, and the hot water is supplied from the lower part of the zeolite layer.

  As shown in FIG. 15A, in the comparative example, the maximum temperature of the lower part (NO.16) of the zeolite layer is about 200 ° C., and the maximum temperature of the intermediate part (NO.10) of the zeolite layer is about 250 ° C. The maximum temperature of the upper part (NO.4) of the zeolite layer is about 275 ° C. It was confirmed that the temperature of the zeolite layer before the adsorption process started, in other words, at the end of the degassing process was around 50 ° C., and the temperature of the zeolite layer rapidly increased to 200 ° C. or more in a short time.

  FIG. 16 shows a graph of the average temperature change of the zeolite layer performed in the laboratory apparatus. FIG. 17 shows an outline of a laboratory apparatus. The lab apparatus 200 includes a container 202 containing a zeolite or a zeolite layer 201 containing zeolite and a non-adsorbing filler (glass beads or alumina), a container 202 containing water 203, and a container main body 204 containing water 203. A heater 205 is provided in the lower portion and heats the water 203 in the container body 204 to generate water vapor. The thickness of the zeolite layer 201 containing zeolite or zeolite and non-adsorbing filler is 8 to 15 mm. In such a laboratory apparatus 200, six temperature sensors are installed at a height of about 5 mm from the bottom of the container 202 (“×” in FIG. 17 indicates a part of the installation position of the temperature sensor), and the zeolite layer The temperature of 201 was measured, and the average temperature of each zeolite layer 201 was calculated from the temperatures measured at six locations, zeolite alone, zeolite + glass beads, zeolite + alumina. As shown in FIG. 16, the maximum average temperature of the zeolite layer 201 containing only zeolite is about 219 ° C. On the other hand, the maximum temperature of the average temperature of the zeolite layer 201 containing glass beads as the non-adsorbing filler (glass beads filling) is about 196 ° C., and the zeolite layer 201 containing alumina as the non-adsorbing filler (alumina) The maximum temperature of the average temperature of filling is about 186 ° C. It was confirmed that a rapid temperature increase can be suppressed by filling the zeolite layer 201 with a non-adsorbing filler (glass beads or alumina).

As described above, by filling the zeolite layer 41 with a non-adsorbing filler (glass beads or alumina), a rapid temperature change (temperature increase in the present embodiment) of the zeolite layer 41 can be suppressed. . As a result, it is possible to suppress a decrease in the adsorption amount of the zeolite layer 41 that is a concern when the temperature of the zeolite layer 41 is too high. In other words, the adsorption amount of the zeolite layer 41 can be improved, and water vapor can be generated more efficiently. Further, it is possible to suppress the deterioration or breakage of the zeolite layer 41 due to the rapid temperature change of the zeolite layer 41.

  In addition, as above-mentioned, when warm water is supplied from the lower part of the zeolite layer 41, the upper temperature of the zeolite layer 41 becomes high compared with the lower part. The zeolite layer 41 varies in temperature for each region depending on the hot water supply position and the like. Therefore, the filling ratio of the non-adsorbing filler may be changed according to the temperature change in the region where the temperature becomes highest. Alternatively, the zeolite layer 41 may have a multi-stage configuration, and the filling ratio of the non-adsorbing filler may be changed according to the stage of the zeolite layer 41. Thereby, only the stage (area | region) of the zeolite layer 41 in which the fall and deterioration of adsorption | suction performance can be considered can be filled with a non-adsorbent packing.

  As mentioned above, although preferred embodiment of this invention was described, the system containing the steam generator which concerns on this invention is not restricted to these, It can include these combinations as much as possible. For example, instead of the lower wire mesh 42 and the upper wire mesh 43, a punched steel plate may be used. The system including the steam generator according to the present invention can be applied to various technologies. For example, in order to use the dehumidifier continuously, it is necessary to regenerate the adsorbent. As a heating means for this regeneration, for example, from the waste water from the steam generator 4 or the steam supply pipe 12 to the heat exchanger for heating. Branched steam, condensed steam from the supply destination of the steam supply pipe 12, or the like can be used. In addition, for example, by installing a system including the steam generator according to the embodiment in a medical institution, using the exhaust heat from the system according to the embodiment, the steam is used for sterilization of a medical instrument or heating in a kitchen. You can also.

DESCRIPTION OF SYMBOLS 1 ... Blower 2 ... Dehumidifier 3 ... Regenerative air heating device 4 ... Steam generator 5 ... Water supply pump 6 ... Hot water heating device 7 ... Vacuum exhaust pipe Pump 9 ... Regenerative air supply pipe 11 ... Hot water supply pipe 12 ... Steam supply pipe 13 ... Compressed air supply pipe 14 ... Drain pipe 15 ... Exhaust pipe 16 ... Vacuum exhaust Tube 41 ... Zeolite layer

Claims (4)

An adsorbent containing portion filled with a porous body inside,
A hot water supply unit for supplying hot water of 50 to 100 ° C. to the adsorbent storage unit;
A steam discharge section for discharging steam generated by adsorbing the hot water to the adsorbent in the adsorbent storage section;
A dry air supply unit that supplies dry air having a dew point of −20 ° C. or less to the adsorbent storage unit, desorbs adsorbed water adsorbed on the adsorbent, and regenerates the adsorbent;
In addition to the adsorbent as a porous body, the adsorbent container includes a non-adsorbing filler,
The adsorbent accommodating portion includes a first portion filled with a non-adsorbing filler, a second portion filled with a non-adsorbing filler at a filling ratio different from the filling ratio of the first portion, Having
Steam generator. An adsorbent containing portion filled with a porous body inside ,
A supply port for receiving hot water of 50 to 100 ° C. supplied to the adsorbent storage unit;
A discharge port for discharging the steam generated by adsorbing the warm water to the adsorbent in the adsorbent containing section ,
The adsorbent containing portion, in addition to the adsorbent as a porous body, comprising the non-adsorbing filler,
The adsorbent accommodating portion includes a first portion filled with a non-adsorbing filler, a second portion filled with a non-adsorbing filler at a filling ratio different from the filling ratio of the first portion, Having
Adsorbent container. A hot water supply step of supplying hot water of 50 to 100 ° C. to the adsorbent container filled with a porous body inside;
A steam discharge step for discharging steam generated by adsorbing the hot water to the adsorbent in the adsorbent container;
A drying air supply step of supplying dry air having a dew point of −20 ° C. or less to the adsorbent accommodating portion to regenerate the adsorbent;
In addition to the adsorbent as a porous body, the adsorbent container includes a non-adsorbing filler,
The adsorbent accommodating portion includes a first portion filled with a non-adsorbing filler, a second portion filled with a non-adsorbing filler at a filling ratio different from the filling ratio of the first portion, Having
Steam generation method. A hot water supply step of supplying hot water of 50 to 100 ° C. to the adsorbent container filled with a porous body inside;
A steam discharge step for discharging the steam generated by adsorbing the hot water to the adsorbent in the adsorbent container,
In addition to the adsorbent as a porous body, the adsorbent container includes a non-adsorbing filler,
The adsorbent accommodating portion includes a first portion filled with a non-adsorbing filler, a second portion filled with a non-adsorbing filler at a filling ratio different from the filling ratio of the first portion, Having
Steam generation method.

Images