JP2006097967A - Heat storage type gas treating device, and method of purifying heat storage material layer in the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve versatility and reliability of a heat storage type gas treating device. <P>SOLUTION: In the heat storage type gas treating device, gas permeable heat storage material layers are arranged at a plurality of gas inlet/outlet parts 3 to a combustion chamber 6, and a gas supply/exhaust air duct to/from the combustion chamber 6 is provided with a switching means V for sequentially switching the heat storage material layer 4 allowing the passage of gas G to be treated, to the combustion chamber 6, and the heat storage material layer 4 allowing the passage of treated gas G' from the combustion chamber 6 in the form of allowing the gas G to be treated and fed to the combustion chamber 6 in a following stroke, to pass through the heat storage material layer 4 through which the treated gas of high temperature delivered from the combustion chamber 6, has passed in a preceding stroke, out of the heat storage material layers 4. A cooling means 5 is provided for cooling the treated gas G' at an air duct part leading to the switching means V from an outlet of the treated gas G' in each of the heat storage material layers 4 out of the gas supply/exhaust air duct, or at an inlet part of the treated gas G' of the switching means V. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a heat storage type gas processing device and a method of purifying a heat storage material layer. Specifically, a breathable heat storage material layer is disposed in each of a plurality of gas inlet / outlet portions with respect to a combustion chamber, and among these heat storage material layers, In the form in which the gas to be processed to be sent to the combustion chamber in the next stroke is passed through the heat storage material layer through which the high-temperature processed gas delivered from the combustion chamber in the previous stroke has been passed, the treatment to the combustion chamber is performed. A regenerative gas processing device provided with a switching means for sequentially switching a heat storage material layer through which gas passes and a heat storage material layer through which treated gas from the combustion chamber passes; provided in a gas supply / exhaust air passage to the combustion chamber; And it concerns on the thermal storage material layer purification method implemented with the thermal storage type gas processing apparatus.

This type of heat storage type gas processing apparatus switches the heat storage material layer through which the gas to be processed to the combustion chamber passes and the heat storage material layer through which the treated gas from the combustion chamber passes through the switching means, thereby switching from the combustion chamber. Pretreatment gas is preheated by passing the gas to be treated in the next process through the heat storage material layer that stores heat by passing the high temperature treated gas, and the preheated gas to be treated is combusted in the combustion chamber. Conventionally, this type of regenerative gas processing device reduces the amount of heating in the combustion chamber required for gas combustion treatment. The treated gas is discharged to the outside as it is through the interposing part of the switching means in the gas supply / exhaust air passage (see, for example, Patent Documents 1 and 2).
JP 2001-304531 A JP-A-9-217918

  In a conventional heat storage type gas processing apparatus, in order to prevent the gas to be processed from being mixed into the processed gas due to leakage and leakage of each gas to the outside, various switching members are provided in the switching means. In order to avoid thermal damage to the seal member, the temperature of the processed gas delivered from the combustion chamber is limited. For this reason, the temperature of the gas to be processed introduced into the apparatus (inlet temperature in the regenerative gas processing apparatus) and combustion The combustion temperature in the chamber is also limited, and the gas to be processed is limited. Further, there are cases where sufficient combustion treatment cannot be performed in the combustion chamber.

  In view of this situation, the main problem of the present invention is to effectively solve the above problems with a rational improvement.

The first characteristic configuration of the present invention relates to a regenerative gas processing apparatus,
Arranging a breathable heat storage material layer in each of a plurality of gas inlets and outlets to the combustion chamber,
Of these heat storage material layers, in the form in which the gas to be processed to be sent to the combustion chamber is passed through the heat storage material layer through which the high-temperature processed gas sent from the combustion chamber is passed in the previous step,
The gas supply / exhaust air passage for the combustion chamber is provided with switching means for sequentially switching the heat storage material layer through which the gas to be processed to the combustion chamber passes and the heat storage material layer through which the treated gas from the combustion chamber passes. In a regenerative gas processing device,
Of the gas supply / exhaust air passages, the processing from the combustion chamber in the air passage portion from the treated gas outlet to the switching means in each of the heat storage material layers or the treated gas inlet portion in the switching means. The cooling means for cooling the spent gas is provided.

  In other words, with this configuration, in the gas supply / exhaust air passage, a high temperature is generated in the air passage portion from the treated gas outlet to the switching means in each of the heat storage material layers, or in the treated gas inlet portion in the switching means. Since the treated gas is cooled by the cooling means, that is, the high-temperature treated gas is cooled before passing through the place where the sealing member is interposed in the switching means, the sealing member exists in a high-temperature atmosphere that easily causes thermal damage. Can be prevented.

  This relaxes restrictions on the temperature of the gas to be treated introduced into the apparatus and the combustion temperature in the combustion chamber, thereby relaxing the limitation on the gas to be treated that can be processed and improving the versatility of the apparatus. The processing performance of the processing is also improved, and the thermal damage of the sealing member provided in the switching means can be effectively prevented, so that the burden of maintenance such as replacement of the sealing member can be reduced. The reliability of the device can also be improved on the sealing surface.

The second feature configuration of the present invention is a preferred configuration in the implementation of the first feature configuration.
A main valve member and a sub-valve member that rotate relative to each other in a state where the opposing surfaces are close to each other,
A plurality of vents communicating with each of the gas inlet / outlet portions are arranged in a rotational direction around the rotation axis of the relative rotation on a surface of the sub valve member facing the main valve member,
The main valve member is formed in a state in which a gas gas passage to be treated and a treated gas air passage are partitioned,
On the surface of the main valve member facing the sub-valve member, an air supply opening which is an air passage opening of the treated gas air passage and an exhaust opening which is an air passage opening of the treated gas air passage are supplied. The opening for exhaust and the opening for exhaust are arranged so as to sequentially face the plurality of vents in association with the relative rotation and do not simultaneously face the same vent, and rotate around the rotation axis. Form side by side,
The main valve member and the sub-valve member are rotated relative to each other with the seal member interposed between the opposing surface portions, thereby allowing the gas to be processed to pass through the combustion chamber through each of the heat storage material layers. A state and a state where the treated gas from the combustion chamber is allowed to pass through,
A rotary switching valve constituted by these main valve member and sub-valve member is used as the switching means.

  In other words, if the rotary switching valve described above is adopted as the switching means, a switching valve is provided for each of the plurality of heat storage material layers, and the heat storage material layer that allows the gas to be processed to pass through the plurality of switching valves and the processed material. Compared to a multi-valve regenerative gas processing device that switches between heat storage material layers that allow gas to pass through, the heat storage material layer that passes the gas to be processed and the treated gas by simply rotating the main valve member and sub-valve member relative to each other. Since the heat storage material layer to be passed can be sequentially switched, there is an advantage that the entire apparatus can be made simple and compact.

  However, in the case of a rotary switching valve, the main valve member is more or less distorted due to the difference in temperature in the air passage between the gas flow passage to be treated and the treated gas air passage formed in the main valve member. As a result, the sealing performance between the opposing surface portions of the main valve member and the sub-valve member (that is, the interposed portion of the seal member) may be somewhat deteriorated.

  However, in this configuration (that is, the second feature configuration in which the rotary switching valve is used as the switching means in the implementation of the first feature configuration), the processed gas cooled by the cooling means is treated gas in the main valve member. Since it can be passed through the air passage, distortion of the main valve member due to a temperature difference in the air passage between the treated gas air passage and the treated gas air passage in the main valve member can be effectively suppressed, Thereby, the reliability in the sealing surface of the apparatus can be further improved while taking advantage of the use of the rotary switching valve.

The third feature configuration of the present invention is a preferred configuration in the implementation of the first or second feature configuration.
The cooling means is configured to cool the treated gas by injecting cooling water to the treated gas from the combustion chamber.

  In other words, with this configuration, not only sensible heat but also latent heat (water vaporization heat) can be used to cool the high-temperature processed gas, so an air-cooling device that blows cold air or a processed gas can be used. Compared with other means of cooling such as a heat exchanger that exchanges heat with the cooling heat medium via the heat transfer wall, the treated gas can be cooled more effectively and efficiently, Therefore, the manufacturing cost and running cost can be advantageous.

The fourth feature configuration of the present invention is a preferred configuration in the implementation of the third feature configuration.
A configuration in which the cooling means cools the seal member in the vicinity of the exhaust opening together with the processed gas from the combustion chamber by injecting cooling water toward the seal member in the vicinity of the exhaust opening. It is in the point.

  In other words, with this configuration, the cooling means cools the high-temperature treated gas by injecting the cooling water, and cools the sealing member in such a manner that the cooling water is directly applied to the sealing member. The member can be prevented from being damaged by heat, so that the burden of maintenance such as replacement of the seal member can be more effectively reduced, and the reliability of the device on the seal surface can be further improved.

The fifth feature configuration of the present invention is a preferred configuration in the implementation of the third or fourth feature configuration.
The cooling means is configured to cool the treated gas from the combustion chamber by injecting cooling water toward the exhaust opening in the treated gas air passage of the main valve member. is there.

  In other words, with this configuration, the cooling means for cooling the treated gas by jetting the cooling water is always used as the cooling water from the treated gas air passage of the main valve member through which the treated gas passes toward the exhaust opening. Of the air passage portion in parallel state from the treated gas outlet to the switching means (rotary switching valve) in each of the heat storage material layers (that is, where the passing gas is sequentially switched). The number of cooling means can be reduced and the structure of the apparatus can be simplified as compared with the case where each is equipped with a cooling means, so that the apparatus can be advantageous in terms of manufacturing cost. .

The sixth feature configuration of the present invention is a preferred configuration in the implementation of any one of the first to fourth feature configurations.
Each of the plurality of switching means equipped separately for each of the air passage portions in parallel state extending from the treated gas outlet to the switching means in each of the heat storage material layers, or for each of the heat storage material layers. In other words, there are provided interlocking means for switching and operating the plurality of cooling means provided at each of the treated gas inlet portions in accordance with the switching of the gas passage state by the switching means.

  In other words, with this configuration, each of the heat storage material layers in each of the parallel air passage portions from the treated gas outlet to the switching means, or each of the heat storage material layers is equipped with a plurality of In the case where the cooling means is provided at each of the treated gas inlet portions in each of the switching means, the cooling means among those cooling means are sequentially switched by the interlocking means as the gas passage state is switched by the switching means. Compared with the manual switching operation, it is possible to reliably prevent the cooling means where the processed gas is in a non-passing state from being unnecessarily cooled, and conversely, there is a need for cooling. It is possible to reliably prevent the cooling means at a certain point from being inadvertently deactivated, and this can further improve the energy saving and operation cost. Together, the reliability of the apparatus in preventing surface heat damage can be further improved.

The seventh feature configuration of the present invention is a preferred configuration in the implementation of any one of the first to sixth feature configurations.
A temperature sensor is provided for detecting the temperature of the processed gas delivered from the combustion chamber on the upstream side in the processed gas flow direction from the cooling portion by the cooling means;
The cooling means is configured to operate based on the temperature detected by the temperature sensor.

  In other words, with this configuration, the cooling means is operated based on the temperature of the processed gas detected by the temperature sensor upstream of the cooling portion by the cooling means in the processed gas flow direction. It is possible to automatically and reliably realize that the cooling means is deactivated when the temperature is not required and the cooling means is cooled when the treated gas is at a temperature requiring cooling. .

  Therefore, the temperature of the treated gas changes due to a change in the flow rate of the gas to be treated or a change in the VOC concentration (volatile organic compound concentration). When the cooling operation becomes necessary, the cooling means can be automatically and reliably cooled. When the cooling operation of the cooling means becomes unnecessary, the cooling means is automatically and reliably turned off. Thus, it is possible to make the apparatus more advantageous in terms of energy saving and operation cost while ensuring high reliability of the apparatus in terms of preventing thermal damage.

  Further, for example, each of the plurality of switching means equipped in each of the parallel air path portions from the exit of the treated gas to the switching means in each of the heat storage material layers or separately for each heat storage material layer In the configuration in which the cooling means is provided at each of the treated gas inlet portions in the above, the temperature sensor and the cooling means are positioned at the upstream side in the flow direction of the treated gas from the cooling portion by each cooling means. If each or each of the treated gas inlet portions is configured to operate corresponding cooling means based on the temperature detected by each temperature sensor, the function of the interlocking means can also be obtained. it can.

The eighth feature configuration of the present invention is a preferred configuration in the implementation of any one of the first to seventh feature configurations.
A temperature sensor is provided for detecting the temperature of the processed gas delivered from the combustion chamber on the upstream side in the processed gas flow direction from the cooling portion by the cooling means;
The cooling amount is adjusted by the cooling means based on the temperature detected by the temperature sensor.

  That is, with this configuration, the amount of cooling by the cooling means (that is, the amount of cooling with respect to the processed gas) is adjusted based on the temperature of the processed gas detected by the temperature sensor. It is possible to automatically respond to changes in the required cooling amount.

  That is, the temperature of the treated gas rises due to changes in the air volume of the gas to be treated and changes in the VOC concentration (volatile organic compound concentration), and the cooling amount of the cooling means required to prevent thermal damage to the seal member is large. When this happens, the cooling amount of the cooling means for the treated gas can be automatically increased based on the temperature detected by the temperature sensor, and the temperature of the treated gas is lowered to cause thermal damage to the seal member. When the cooling amount of the cooling means required for prevention becomes small, the cooling amount of the cooling means with respect to the treated gas can be automatically reduced based on the temperature detected by the temperature sensor. It is possible to make the apparatus more advantageous in terms of energy saving and operation cost while ensuring high reliability of the apparatus in terms of prevention.

A ninth characteristic configuration of the present invention relates to a heat storage material layer purification method in a heat storage type gas treatment device according to any one of the first to eighth characteristic configurations,
The temperature of the outlet side portion of the treated gas in the heat storage material layer is maintained at a predetermined purification temperature by ventilation of the purification gas heated in the combustion chamber, and accumulated in the outlet side portion of the treated gas in the heat storage material layer. The point is to burn or evaporate the purified object.

  Also in the heat storage material layer purification method in the conventional heat storage type gas processing apparatus, the temperature of the outlet portion of the treated gas in the heat storage material layer is maintained at a predetermined purification temperature by the ventilation of the purification gas heated in the combustion chamber as described above. In the state, the purification object such as the fat component accumulated in the outlet side portion of the treated gas in the heat storage material layer was burned or evaporated, but the purification temperature for burning or evaporating the purification object is high, The purifying gas after the purifying action that has passed through the heat storage material layer to be purified (that is, high-temperature gas higher than the purifying temperature) cannot be passed to the switching means because it is necessary to prevent thermal damage of the seal member, and therefore In the conventional apparatus, a purification gas discharge air passage must be provided every time the purification operation is performed in order to discharge the high-temperature purification gas after the purification action directly to the outside without passing through the switching means. Inside It was.

  However, if this heat storage material layer purification method is implemented in the heat storage type gas processing device according to any one of the first to eighth characteristic configurations, the cooling means for cooling the treated gas from the combustion chamber Since the cooling means is used, the high temperature purifying gas after the purifying action is supplied to the switching means from the exit of the treated gas in each of the heat storage material layers, or in the switching means. It is possible to cool the treated gas at the inlet portion, so that the purified gas after the purification action can be passed through the switching means in the gas supply / exhaust air passage of the regenerative gas processing apparatus in the same manner as the treated gas during normal operation. It is possible to pass through the equipment and discharge to the outside, and it is possible to eliminate the burden of providing a separate gas discharge air passage for purification at every purification operation as in the conventional apparatus.

The tenth characteristic configuration of the present invention is a preferable configuration in the implementation of the ninth characteristic configuration.
The purifying operation of passing the purifying gas through the heat storage material layer is performed sequentially on the plurality of heat storage material layers by switching the gas passage state by the switching means.

  In other words, according to the ninth characteristic configuration described above, the purifying gas after the purifying action can be discharged to the outside through the interposition part of the switching means, so that the switching means can be used even during the purifying operation. Focusing on this, in the tenth feature configuration, the purification operation for passing the purification gas through the heat storage material layer is sequentially performed on the plurality of heat storage material layers by switching the gas ventilation state by the switching means. For example, in order to sequentially carry out a purification operation in which the purification gas discharge air passage is separately connected to a plurality of heat storage material layers and the purification gas is passed through the heat storage material layers. In comparison, the purification operation can be performed efficiently.

[First Embodiment]
FIGS. 1-8 shows 1st Embodiment of the thermal storage type gas processing apparatus of this invention, and the inside of the housing 1 arrange | positioned at the apparatus upper part is divided by the partition wall 2, and is planarly viewed as a room group of the thermal storage chamber 3. FIG. The eight heat storage chambers 3 arranged in parallel are formed in the housing 1, and a rotary switching valve V for switching the air path communicating with each heat storage chamber 3 is arranged below the housing 1. is there.

  Each heat storage chamber 3 accommodates a heat storage material layer 4 composed of a breathable packed layer of the heat storage material 4 a, and each heat storage chamber 3 serves as a gas inlet / outlet portion for the combustion chamber 6 formed in the upper part of the housing 1. The combustion chamber 6 is equipped with a burner B as a combustion means, and the gas to be treated led to the combustion chamber 6 through a part of the heat storage material layer 4. After G is burned by the burner B, the treated gas G ′ is passed through the other heat storage material layer 4 to store heat in the heat storage material layer 4, and each heat storage chamber 3 is rotated by the rotary switching valve V. By switching the air path that communicates with the heat treatment material G in the previous stroke, the gas G to be treated is passed through the heat storage material layer 4 through which the treated gas G ′ has been passed in the previous stroke. To do.

  Of the air passage portion from the treated gas outlet of each heat storage material layer 4 (that is, the lower end portion of the heat storage material layer 4) to the rotary switching valve V, the heat storage material 4 is located below the heat storage material layer 4 in each of the heat storage chambers 3. A temperature sensor s for detecting the temperature t of the gas passing through the layer 4, and a fountain nozzle 5 for injecting the cooling water W to the treated gas G 'after passing through the heat storage material layer to cool the treated gas G'. However, the cooling water W is arranged in that order from the upstream side in the processed gas flow direction, and the cooling water W is supplied to each fountain nozzle 5 by the pump P through the water supply path 5A.

  The water supply path 5A for each fountain nozzle 5 is provided with an on-off valve 7 for operating and stopping the injection of the cooling water W at each fountain nozzle 5, and the on-off valve 7 has a temperature t detected by each temperature sensor s. On the basis of the set temperature ts, the control device C performs open / close control.

  Specifically, when the temperature t detected by any one of the temperature sensors s is equal to or higher than the set temperature ts (t ≧ ts), the on-off valve 7 corresponding to the temperature sensor s is opened, and the cooling water is discharged from the corresponding fountain nozzle 5. When W is injected and the temperature t detected by any one of the temperature sensors s becomes lower than the set temperature ts (t <ts), the on-off valve 7 corresponding to the temperature sensor s is closed and the corresponding fountain nozzle The injection of the cooling water W is stopped from 5.

  As shown in FIGS. 3 to 7, the rotary switching valve V includes an octagonal tubular distributor 10 in which eight supply / discharge chambers 8 having an annular arrangement in a plan view are formed inside by a partition wall 9, and a main valve It consists of a cylindrical valve body 12 containing a rotary valve body 11 as a member and a cylindrical air chamber 13 for receiving the gas G to be treated. The valve body 12 is fixedly attached to the upper part of the installation base 14. At the same time, the distributor 10 is arranged concentrically above the valve body 12 and fixedly connected to the valve body 12, and the air chamber 13 is concentrically below the valve body 12. It is arranged and connected to the annular bottom plate 12 a of the valve body 12 in a suspended manner, and is supported from below by the lower frame 14 a of the installation base 14.

  The eight heat storage chambers 3 are individually connected to the eight supply / discharge chambers 8 in the distributor 10 whose upper end is closed through the supply / discharge passages 15 at the lower ends thereof, and the top plate of the valve body 12 and In the valve seat plate 10a serving as a sub-valve member that also serves as the bottom plate of the distributor 10, eight fan-shaped vent holes 16 are arranged evenly around the rotation axis Z of the rotary valve body 11 in the rotation direction thereof. It is formed in an annular arrangement individually corresponding to the chamber 8.

  Further, a central chamber 18 for receiving the purge gas G ″ is formed in the central portion of the distributor 10 by a partition cylinder 19, and a purge gas supply path 20 is connected to the central chamber 18 from the upper end side of the distributor 10. It is.

  The rotary valve body 11 housed in the valve body 12 is formed in a reverse truncated cone shape including a valve peripheral wall 21, a valve top plate 22, a valve bottom plate 23, and a vertical cylindrical rotary shaft 24. The upper surface portion x of the distributor 10 is in close proximity to the lower surface portion y of the valve seat plate 10 a in the distributor 10, and the lower surface of the valve bottom plate 23 is in close proximity to the peripheral edge portion of the upper end opening of the air chamber 13. Thus, the rotary valve body 11 is rotated around the vertical axis Z in the direction of the arrow R in the figure within the valve body 12.

  The inside of the rotary valve body 11 is a gas discharge internal air passage 28 which is a treated gas air passage and a gas gas to be treated which are treated gas air passages in plan view by two partition walls 26 extending between the valve peripheral wall 21 and the cylindrical rotating shaft 24. It is divided into an internal air passage 27 for supplying gas, which is a passage, and in the upper part in the rotary valve body 11, a portion for purging is provided by an intermediate bottom plate 29 and an upper partition wall 30 at a location adjacent to one partition wall 26. The internal air passage 31 is partitioned and, as a result, the gas supply internal air passage 27, the purge internal air passage 31, and the gas exhaust internal are formed as an annular row of internal compartments in the upper part of the rotary valve body 11. The air passage 28 is arranged in this order from the lower rotation side of the rotary valve body 11. Reference numeral 32 denotes a reinforcing rib plate in which a communication port 32a for indoor communication is formed, and the portion connected below the upper partition wall 30 has a similar reinforcing rib plate structure.

  The valve top plate 22 includes an air supply opening 33 serving as an air passage opening of the gas supply internal air passage 27, a purge scavenging opening 34 serving as an air passage opening of the purge internal air passage 31, and a gas exhausting internal air. The exhaust opening 35 serving as the air passage opening of the passage 28 is rotated from the lower side in the rotation direction in that order so as to sequentially communicate with the vent 16 of the valve seat plate 10a as the rotary valve body 11 rotates. Two valve elements 11 arranged in the rotation direction of the valve body 11 and adjacent to each other in the rotation direction are formed so as not to simultaneously face the same vent 16 in the valve seat plate 10a.

  The cylindrical rotary shaft 24 whose upper end is located in the central chamber 18 of the distributor 10 is formed with a purge communication port 36 that communicates the internal space with the purge internal air passage 31. Forms a gas supply communication port 37 that allows the gas supply internal air passage 27 to always communicate with the internal space 13r of the air chamber 13 during movement in the valve body rotation direction accompanying the rotation of the rotary valve body 11. In the valve peripheral wall 21, an internal air passage 28 for discharging gas in the movement in the valve body rotation direction accompanying the rotation of the rotary valve body 11 is provided with respect to the internal space 12 r around the rotary valve body 11 in the valve body 12. A gas discharge communication port 38 that is always in communication is formed, and in this configuration, a gas supply connection port 13 s opened in a part of the internal space 13 r of the air chamber 13 in the valve body rotation direction is formed. The supply path 39 for the gas G to be processed is an air chamber 13 is connected to the outside of the valve body 12 and processed into the gas discharge connection port 12s opened in a part of the valve body 12 around the rotary valve body 11 in the valve body rotation direction. A discharge path 40 for the gas G ′ is connected from the outside of the valve body 12.

  Then, between the distributor 10 and the rotary valve body 11, the gas to be processed G passes through the gap between the lower surface portion y of the valve seat plate 10 a and the upper surface portion x of the valve top plate 22, and the processed gas G ′ or purge A face-to-face seal member 17 for preventing the gas G ″ from being mixed is interposed, and the lower surface of the valve bottom plate 23 and the upper end opening of the air chamber 11 are provided between the rotary valve body 11 and the air chamber 13. An annular seal member 25 for the air chamber is provided to prevent the gas to be processed G in the air chamber 13 from entering the processed gas G ′ in the valve body 12 through a gap between the peripheral portion. By preventing these contaminations, it is possible to prevent contaminants and malodorous substances contained in the gas G to be processed from being discharged from the apparatus together with the processed gas G ′ without being processed.

  That is, in this regenerative gas processing apparatus (see FIG. 8), the gas G to be processed (for example, exhaust air from a painting booth containing an organic solvent) supplied from the supply path 39 is supplied to the gas supply connection port 13s, The gas is introduced into the gas supply internal air passage 27 of the rotary valve body 11 through the internal space 13r of the air chamber 13 and the gas supply communication port 37, and then the gas to be treated G is supplied to the air supply opening. 33, the vent 16 on the side of the valve seat plate 10a facing and communicating with the supply opening 33, the supply / discharge chamber 8 communicating with the vent 16, and the supply / discharge passage 15 communicating with the supply / discharge chamber 8. Then, it passes through a part of the heat storage chamber 3 to reach the combustion chamber 6, and in this combustion chamber 6, pollutants and malodorous substances in the gas G to be treated are processed by combustion.

  Further, the treated gas G ′ is passed from the combustion chamber 6 to the other heat storage chamber 3 to cause the heat storage chamber 3 to store heat with respect to the stored heat storage material 4 a, and then to supply the heat storage chamber 3. The exhaust passage 15, the supply / discharge chamber 8 communicating with the supply / discharge passage 15, the vent 16 on the valve seat plate 10 a side communicating with the supply / exhaust chamber 8, and the exhaust opening communicating with the vent 16 in opposition to each other 35 is introduced into the gas exhaust internal air passage 28 of the rotary valve body 11, followed by gas exhaust through the communication port 38 for gas exhaust and the internal space 12 r around the rotary valve body 11 in the valve body 12. Is discharged from the connection port 12s to the discharge path 40.

  Further, the purge gas G ″ introduced from the purge gas supply passage 20 into the central chamber 18 of the distributor 10 is formed with a communication hole 24 a formed in the upper end portion of the cylindrical rotary shaft 24 in the rotary valve body 11, the cylindrical rotary shaft. 24 and the purge internal air passage 31 of the rotary valve body 11 through the purge communication port 36 formed in the cylindrical rotary shaft 24, and subsequently, the purge scavenging opening 34 and the counter communication therewith. Through the vent 16 on the valve seat plate 10a side, the supply / exhaust chamber 8 communicating with the vent 16 and the supply / exhaust passage 15 communicating with the supply / exhaust chamber 8. 3 is allowed to reach the combustion chamber 6 and then merged with the treated gas G ′.

  In this process, the vent on the valve seat plate 10a side serving as a sub-valve member that makes the supply opening 33, the scavenging opening 34, and the exhaust opening 35 of the rotary valve body 11 as the main valve member communicate with each other. 16 are sequentially switched by the rotation of the rotary valve body 11, so that the heat storage chamber 3 through which the gas G to be processed passes, the heat storage chamber 3 through which the purge gas G ″ passes, and the heat storage chamber 3 through which the treated gas G ′ passes are arranged. In the form of switching sequentially (in other words, sequentially switching the heat storage material layer 4 through which each gas G, G ′, G ″ is passed), each heat storage chamber 3 is passed through the gas to be treated G ′, purge gas G ”And the processed gas G ′ are sequentially switched in this order, whereby the gas G to be processed is stored in each of the heat storage chambers 3 by the heat storage material 4a that has previously stored heat with the passage of the processed gas G ′. Preheat in the passing process.

  Further, after passing the gas to be processed G, the purge gas G ″ is allowed to pass through each heat storage chamber 3 before passing the processed gas G ′ next, whereby the gas to be processed remaining in the heat storage chamber 3. G is discharged to the combustion chamber 6 before the passage of the next treated gas G ′, and the residual treated gas G is prevented from being mixed into the treated gas G ′ that passes through the heat storage chamber 3 next.

  The purge gas supply passage 20 is an air passage branched from the discharge passage 40, and a part of the treated gas G ′ discharged to the discharge passage 40 by this air passage branch is used as the purge gas G ″. It is.

  Further, in the case of this rotary switching valve V, the inter-surface seal member 17 between the distributor 10 and the rotary valve body 11 is attached to the upper surface portion x of the valve top plate 22 and the surface thereof. The intermediate seal member 17 is slidably brought into contact with the lower surface portion y of the valve seat plate 10 a as the rotary valve body 11 rotates. On the other hand, the annular seal member 25 for the air chamber is opened at the upper end of the air chamber 11. An annular seal member 25 is attached to the peripheral portion, and the annular seal member 25 is configured to be in sliding contact with the lower surface of the valve bottom plate 23 as the rotary valve body 11 rotates.

  Then, by setting an appropriate temperature as the set temperature ts in the cooling water injection from the fountain nozzle 5, when the high temperature treated gas G ′ passes through each heat storage chamber 3, the fountain of the heat storage chamber 3. By injecting the cooling water W from the nozzle 5, the treated gas G ″ is cooled to prevent thermal damage of the inter-face seal member 17 and the annular seal member 25 due to the high temperature treated gas G ′. is there.

  Further, by operating the corresponding fountain nozzle 5 based on the detected temperature t of the temperature sensor s provided in each heat storage chamber 3, the heat storage chamber 3 through which the treated gas G ′ passes is sequentially switched. Thus, the fountain nozzle 5 for injecting the cooling water W is also sequentially switched.

  If an appropriate temperature is set as the set temperature ts, unnecessary cooling water injection from the fountain nozzle 5 when the gas to be processed G or the purge gas G ″ passes through the heat storage chamber 3 can be prevented. In addition, useless cooling water injection from the fountain nozzle 5 when the treated gas G ′ having a temperature that does not cause thermal damage to the seal members 17 and 25 passes through the heat storage chamber 3 can be prevented.

  The gas discharge connection port 12 s for connecting the discharge path 40 for the treated gas G ′ is formed at a part of the peripheral wall of the valve body 12 in the valve body rotation direction, whereas the rotary valve body in the valve body 12 is formed. The inner space 12r around 11 has an arcuate shape arranged so as to be along the valve peripheral wall 21 of the rotary valve body 11 in a predetermined angular range extending from the upper side to the lower side of the gas discharge connection port 12s in the valve body rotation direction. The fixed resistance plate 50 is provided, and the passing gas (processed gas G ′ and gas to be processed G) generated due to the gas discharge communication port 38 approaching or moving away from the gas discharge connection port 12s is periodically generated. The air flow is prevented from fluctuating to prevent the deterioration of the apparatus performance and the operation trouble caused by the air flow fluctuation.

  Reference numeral 50a denotes a leg member that connects and supports the fixed resistance plate 50 to the peripheral wall of the valve body 12 in a state in which a clearance is secured between the gas discharge connection port 12s.

  A strong and flexible metal plate is used for the annular bottom plate 12a of the valve body 12 to which the air chamber unit 13 is connected, and the air chamber unit 13 and the air chamber unit 13 are mounted by this flexibility. The rotary valve body 11 in the placed state can be freely displaced in the vertical direction (that is, displacement in the perspective direction with respect to the distributor 10).

  In addition, while the air chamber unit 13 is supported from below by the lower frame 14a of the installation base 14, the air chamber unit 13 is elastically pressed upward as a support between the lower frame 14a and the air chamber unit 13. The coil spring 41 is interposed (that is, pressed toward the rotary valve body 11), and this is under a supporting state that allows the vertical displacement of the air chamber unit 13 and the rotary valve body 11 as described above. By pressing the air chamber 13 upward by the coil spring 41, the rotary valve body 11 is pressed upward by the coil spring 41 (that is, pressed toward the distributor 10) via the air chamber 13. is there.

  That is, by pressing the rotary valve body 11 toward the distributor 10 in this way, the distributor 10 is configured in such a manner that the inter-surface seal member 17 provided on the valve top plate 22 of the rotary valve body 11 is pressed by the rotary valve body 11. The pressure chamber is securely brought into pressure contact with the valve seat plate 10a, and the air chamber unit 13 is pressed against the rotary valve body 11 by the coil spring 41, so that the air chamber of the air chamber unit 13 is provided at the peripheral edge of the upper end opening. The annular seal member 25 for the vessel is also pressed against the valve bottom plate 23 of the rotary valve body 11 in such a manner that the annular seal member 25 is pressed by the air chamber device 13, so that the seal members 17, 25 are more reliably sealed. is there.

  In the figure, reference numeral 42 denotes a double nut mechanism for adjusting the position of the receiving seat 43 with respect to the coil spring 41. By adjusting the position of the receiving seat 43, the biasing force of the coil spring 41 with respect to the air chamber 13 and the rotary valve body 11 is shown. (In other words, the pressure contact force of the inter-surface seal member 17 with respect to the valve seat plate 10 a and the pressure contact force of the air chamber annular seal member 25 with respect to the valve bottom plate 23 of the rotary valve body 11) are adjusted.

  A drive shaft 44 is connected to the cylindrical rotary shaft 24 of the rotary valve body 11, and a motor 45 rotates the rotary valve body 11 via the speed reducer 46 and the drive shaft 44.

  Further, in order to allow the vertical displacement of the air chamber 13 and the rotary valve body 11, the upper end portion of the cylindrical rotary shaft 24 in the rotary valve body 11 allows the target shaft to slide in the axial direction. It is supported by the distributor 10 via a bearing 47, and similarly, the drive shaft 44 is connected to the speed reducer 46 via a shaft coupling 48 that allows the object shaft to slide in the axial direction.

  In short, in this embodiment, the rotary switching valve V composed of the rotary valve body 11 as the main valve member and the valve seat plate 10a as the auxiliary valve member allows the gas G to be processed to the combustion chamber 6 to pass through. A switching means for sequentially switching between the heat storage material layer 4 and the heat storage material layer 4 through which the treated gas G ′ from the combustion chamber 6 passes is configured.

  In addition, the fountain nozzle 5, the water supply path 5 </ b> A, the on-off valve 7, the pump P, the temperature sensor s, and the control device C are the processed gas G ′ in each of the heat storage material layers 4 in the gas supply / exhaust air path to the combustion chamber 6. The cooling means for cooling the treated gas G ′ from the combustion chamber 6 is configured at the air passage portion extending from the outlet of the combustion chamber to the switching means or at the inlet portion of the treated gas G in the switching means.

  Further, the temperature sensor s and the control device C are provided in each of the parallel air passage portions from the outlet of the treated gas G ′ to the switching means in each of the heat storage material layers 4 or to the heat storage material layer 4. A plurality of cooling means provided in each of the treated gas inlet portions of each of the plurality of switching means provided separately are configured to operate in conjunction with switching of the gas passage state by the switching means.

  Further, in the present embodiment, the temperature sensor s is arranged in a state in which the temperature is detected upstream of the portion cooled by the cooling means in the direction of the treated gas flow, and the cooling means is based on the temperature t detected by the temperature sensor s. It is configured to operate.

  Next, a method for purifying the heat storage material layer 4 in the heat storage type gas processing apparatus will be described.

  In the above-described heat storage type gas processing apparatus, when the gas processing operation for processing the gas G to be processed by combustion in the combustion chamber 6 and discharging the processed gas G ′ to the discharge path 40 is performed for a certain period, each heat storage material layer 4 is accumulated in the lower part (that is, the outlet side part of the treated gas G ′), and by this accumulation, the passage resistance of the heat storage material layer 4 is increased. However, since the gas processing capacity is reduced, the purification operation for removing the deposits such as dust-like combustion by-products and dust from the heat storage material layer 4 by combustion or evaporation as the substance to be purified is periodically executed. The purification operation is performed as follows.

  Instead of the treated gas G ′ during the gas treatment operation, a part of the heat storage material layer 4 (the heat storage material layer 4 that passes through the exhaust opening 35 of the rotary valve body 11) is heated in the combustion chamber 6. In contrast, the treated gas G in the heat storage material layer 4 is ventilated for a longer time than the passage time of the gas G to be treated and the treated gas G ′ during the gas treatment operation. By maintaining the temperature of the outlet side portion of G ′ at a predetermined purification temperature, the object to be purified (smear-like combustion by-product and dust) at the outlet part is burned or evaporated, and these substances to be cleaned or burned are burned or evaporated. Is discharged to the discharge path 40 through the rotary switching valve V through the same path as the processed gas G ′ during the gas processing operation together with the purifying gas g ′ after the purifying action, thereby purifying the heat storage material layer 4.

  Then, by switching the gas passage state by the rotary switching valve V, the heat storage material layer 4 that passes the purification gas g is switched to sequentially perform the purification operation similar to the above on each heat storage material layer 4. Thereby, all the heat storage material layers 4 are purified.

  Further, in this purification operation, as in the case of the gas processing operation, the control device C is caused to execute the cooling water injection from the fountain nozzle 5 based on the detection temperature t of the temperature sensor s, whereby the purification after the purification action is performed. This prevents thermal damage of the inter-surface seal member 17 and the annular seal member 25 due to the working gas g ′.

  As described above, according to the regenerative gas processing apparatus of the present embodiment, thermal damage to the face-to-face seal member 17 and the annular seal member 25 in the rotary switching means V is effective both during the gas processing operation and during the purification operation. Can be prevented.

  Further, by preventing thermal damage of the seal members 17 and 25 due to the processed gas G ′ during the gas processing operation, the temperature of the gas G to be processed introduced into the apparatus and the combustion temperature limit in the combustion chamber 6 are alleviated. In addition, the versatility of the apparatus and the processing performance of the combustion treatment can be improved, and further, the burden of maintenance such as replacement of both seal members 17 and 25 can be reduced, and the reliability of the apparatus can be improved on the sealing surface. it can.

  Further, since the heat damage of the sealing members 17 and 25 due to the purifying gas g ′ after the purifying action can be prevented during the purifying operation, a dedicated purifying gas discharge air passage for discharging the purifying gas g ′ after the purifying action is provided. Even if it is not separately installed, the purifying gas g ′ after the purifying action can be discharged through the rotary switching valve V, and by the switching by the rotary switching valve V, the purification operation for each heat storage material layer 4 is efficiently performed. be able to.

[Second Embodiment]
FIGS. 9-12 shows 2nd Embodiment of the thermal storage type gas processing apparatus of this invention, the fountain nozzle 5 which is a cooling means is provided in the gas exhaust internal air path 28 of the rotary valve body 11, and the exhaust opening 35 is shown. The cooling water W is sprayed toward the end to cool the treated gas G ′ in the distributor 10 through the vent hole 16 of the valve seat plate 10a.

  Three fountain nozzles 5 are provided at equal intervals in the radial direction from the cylindrical rotary shaft 24 in the gas discharge internal air passage 28 of the rotary valve body 11, and are provided in the cylindrical rotary shaft 24. The cooling water W connected to the channel 5A and supplied through the water supply channel 5A is injected so that the cooling water W enters the distributor 10 from the entire area of the exhaust opening 35, and the treated gas G in the distributor 10 is injected. ′ Is cooled.

  Since the fountain nozzle 5 and the water supply channel 5 </ b> A rotate in conjunction with the rotation of the rotary valve body 11, the cooling water W is wound around the cylindrical rotary shaft 24 below the air chamber 13 so as to be relatively rotatable. The supply portion 5B is supplied by the pump P, and flows from the supply portion 5B into the water supply passage 5A through the inlet 5a of the water supply passage 5A formed at the supply portion disposition position of the cylindrical rotating shaft 24. 5 is injected.

  The pump P is controlled to send out the cooling water W by the control device C based on the temperature t detected by the temperature sensor s provided below the heat storage material layer 4 in each heat storage chamber 3. When the detected temperature t of at least one temperature sensor s among the plurality of temperature sensors s is equal to or higher than the set temperature ts (that is, the processed gas G ′ having a temperature that may cause thermal damage to the seal members 17 and 25). Is passing through any one of the heat storage chambers 3), the pump P is operated to inject the cooling water W from the fountain nozzle 5, and the detected temperatures t of all the temperature sensors s are less than the set temperature ts. At this time, the pump P is stopped and the injection of the cooling water W from the fountain nozzle 5 is stopped.

  With this configuration, the number of fountain nozzles 5, water supply pipes 5a, and on-off valves 7 provided in the apparatus can be reduced, while the inter-surface seal member 17 and the annular seal member 25 provided in the rotary switching valve V are provided. Can be prevented from being present in a high temperature atmosphere where both of the seal members 17 and 25 are likely to cause thermal damage.

  The other configurations are the same as those in the first embodiment, and the same components as those described in the first embodiment or components having the same functions are denoted by the same reference numerals and description thereof is omitted. .

[Another embodiment]
Next, another embodiment will be listed.

  In the first embodiment described above, the rotary switching valve V is adopted as the switching means. However, as the switching means, the switching valves are individually provided for the plurality of heat storage material layers 4, and the plurality of these switching valves are provided. You may employ | adopt the multi-valve type thermal storage type gas processing apparatus which switches the thermal storage material layer 4 which allows the to-be-processed gas G to pass, and the thermal storage material layer 4 which passes processed gas G 'by a switching valve.

  In the first and second embodiments described above, the fountain nozzle 5 is employed as a cooling means for cooling the treated gas G ′ from the combustion chamber 6, and the cooling water W is supplied from the fountain nozzle 5 to the treated gas G ′. Although the treated gas G ′ has been cooled by spraying, the present invention is not limited to this configuration, and an air cooling device that blows cold air, or heat exchange between the treated gas and the cooling heat medium via the heat transfer wall. Other cooling means such as a heat exchanger may be used to cool the treated gas G ′. When a nozzle for injecting the cooling water W is used as the cooling means, the cooling water W is injected. Any form such as a mist form or a shower form may be adopted.

  Further, when a nozzle for injecting the cooling water W is employed as the cooling means, the injected cooling water W is directly applied to the seal member in the switching means (particularly the seal member 17 located in the vicinity of the exhaust opening 35). The sealing member may be directly cooled together with the treated gas G ′.

  In the first embodiment described above, the fountain nozzle 5 as a cooling means is provided below the heat storage material layer 4 in each heat storage chamber 3, and in the second embodiment, the fountain nozzle 5 is a gas of the rotary valve body 11 in the rotary switching valve V. The cooling unit is disposed in the exhaust internal air passage 28. The gas supply / exhaust air passage with respect to the combustion chamber 6 is disposed at the treated gas G in the heat storage chamber 3 in each of the heat storage material layers 4. ′ Outlet to the rotary switching valve V (supply / discharge path 15 and supply / discharge chamber 8) or treated gas G ′ inlet part (portion of the exhaust opening 35) in the switching means. That's fine.

  In the first embodiment described above, the cooling means is switched between the operating state and the non-operating state based on the temperature t detected by each temperature sensor s. However, the configuration for switching the cooling means between the operating state and the non-operating state is as follows. The present invention is not limited to this configuration, and various configurations may be adopted.

  Further, the temperature of the processed gas G ′ delivered from the combustion chamber 3 is detected by the temperature sensor s upstream of the cooling portion by the cooling means in the direction of the processed gas flow, and cooling is performed based on the detected temperature t. You may make it the structure which adjusts the cooling amount (For example, the amount of jet water from the fountain nozzle 5) with respect to processed gas G 'of a means.

  In addition, when equipped with interlocking means for switching and operating a plurality of cooling means as the gas passage state is switched by the switching means, the interlocking means is used for temperature detection as shown in the first embodiment. Not only the switching operation of the cooling means based but also various switching methods can be applied.

The side view which shows 1st Embodiment of the thermal storage type gas processing apparatus of this invention. Plan view sectional drawing of the thermal storage chamber part in 1st Embodiment Plan view sectional drawing of the divider | distributor part in 1st Embodiment. Side view sectional drawing of the switching valve part in 1st Embodiment Exploded plan view of a switching valve portion in the first embodiment The disassembled perspective view of the switching valve part in 1st Embodiment The disassembled perspective view of the rotary valve body part in 1st Embodiment Functional explanatory diagram of the regenerative gas processing apparatus in the first embodiment Side surface sectional drawing which shows the switching valve part in 2nd Embodiment of the thermal storage type gas processing apparatus of this invention. Side view sectional drawing which shows the switching valve part in 2nd Embodiment Exploded plan view of the switching valve portion in the second embodiment Functional explanatory diagram of a regenerative gas processing apparatus in the second embodiment

Explanation of symbols

3 Gas Inlet / Outlet Port 4 Heat Storage Material Layer 5 Cooling Means 5a Cooling Means 6 Combustion Chamber 7 Cooling Means 10a Sub-valve Member 11 Main Valve Member 16 Vent 27 Treated Gas Air Path 28 Treated Gas Air Path 34 Supply Air Opening 35 Exhaust Opening C Interlocking means G Processed gas G 'Processed gas P Cooling means s Temperature sensor t Detected temperature V Switching means W Cooling water x Opposing surface part y Opposing surface part

Claims (10)

Arranging a breathable heat storage material layer in each of a plurality of gas inlets and outlets to the combustion chamber,
Of these heat storage material layers, in the form in which the gas to be processed to be sent to the combustion chamber is passed through the heat storage material layer through which the high-temperature processed gas sent from the combustion chamber is passed in the previous step,
The gas supply / exhaust air passage for the combustion chamber is provided with switching means for sequentially switching the heat storage material layer through which the gas to be processed to the combustion chamber passes and the heat storage material layer through which the treated gas from the combustion chamber passes. A heat storage type gas processing device,
Of the gas supply / exhaust air passages, the processing from the combustion chamber in the air passage portion from the treated gas outlet to the switching means in each of the heat storage material layers or the treated gas inlet portion in the switching means. A regenerative gas processing apparatus provided with cooling means for cooling the spent gas. A main valve member and a sub-valve member that rotate relative to each other in a state where the opposing surfaces are close to each other,
A plurality of vents communicating with each of the gas inlet / outlet portions are arranged in a rotational direction around the rotation axis of the relative rotation on a surface of the sub valve member facing the main valve member,
The main valve member is formed in a state in which a gas gas passage to be treated and a treated gas air passage are partitioned,
On the surface of the main valve member facing the sub-valve member, an air supply opening which is an air passage opening of the treated gas air passage and an exhaust opening which is an air passage opening of the treated gas air passage are supplied. The openings for exhaust and the openings for exhaust are arranged so as to sequentially face the plurality of vents according to the relative rotation and do not face the same vents at the same time, and rotate around the rotation axis. Form side by side,
The main valve member and the sub-valve member are rotated relative to each other with the seal member interposed between the opposing surface portions, thereby allowing the gas to be treated to pass through the combustion chamber through each of the heat storage material layers. A state and a state where the treated gas from the combustion chamber is allowed to pass through,
The regenerative gas processing apparatus according to claim 1, wherein a rotary switching valve constituted by the main valve member and the sub valve member is used as the switching means.   The regenerative gas processing apparatus according to claim 1 or 2, wherein the cooling means is configured to cool the processed gas by injecting cooling water to the processed gas from the combustion chamber.   A configuration in which the cooling means cools the seal member in the vicinity of the exhaust opening together with the processed gas from the combustion chamber by injecting cooling water toward the seal member in the vicinity of the exhaust opening. The regenerative gas processing apparatus according to claim 3.   The cooling means is configured to cool the treated gas from the combustion chamber by injecting cooling water toward the exhaust opening in the treated gas air passage of the main valve member. The regenerative gas processing apparatus according to 3 or 4.   Each of the plurality of switching means equipped separately for each of the air passage portions in parallel state extending from the treated gas outlet to the switching means in each of the heat storage material layers, or for each of the heat storage material layers. 5. Interlocking means for switching and operating the plurality of cooling means provided at each of the treated gas inlet portions in accordance with switching of the gas passage state by the switching means is provided. The regenerative gas processing apparatus according to item 1. A temperature sensor is provided for detecting the temperature of the processed gas delivered from the combustion chamber on the upstream side in the processed gas flow direction from the cooling portion by the cooling means;
The regenerative gas processing apparatus according to any one of claims 1 to 6, wherein the cooling unit is configured to operate based on a temperature detected by the temperature sensor. A temperature sensor is provided for detecting the temperature of the processed gas delivered from the combustion chamber on the upstream side in the processed gas flow direction from the cooling portion by the cooling means;
The regenerative gas processing apparatus according to any one of claims 1 to 7, wherein a cooling amount by the cooling means is adjusted based on a temperature detected by the temperature sensor. It is the thermal storage material layer purification method in the thermal storage-type gas processing apparatus of any one of Claims 1-8,
The temperature of the outlet side portion of the treated gas in the heat storage material layer is maintained at a predetermined purification temperature by ventilation of the purification gas heated in the combustion chamber, and accumulated in the outlet side portion of the treated gas in the heat storage material layer The heat storage material layer purification method which burns or evaporates the to-be-purified material. The heat storage material layer purification method according to claim 9, wherein the purification operation of passing the purification gas through the heat storage material layer is sequentially performed on the plurality of heat storage material layers by switching the gas passage state by the switching unit.

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