TW201403003A - Regenerative exhaust gas purifying apparatus - Google Patents

Abstract

This invention provides a regenerative exhaust gas purifying apparatus using a regenerator to purify a gas to be treated, which has: a first regenerative chamber and a second regenerative chamber that respectively accommodate a first regenerator and a second regenerator; a combustion chamber communicating with the first regenerative chamber and the second regenerative chamber; a first supply portion and a second supply portion for supplying the gas to be treated to said first regenerative chamber and said second regenerative chamber; a first discharge portion and a second discharge portion for discharging the treated gas from said first regenerative chamber and said second regenerative chamber; a supply passage for supplying the gas to be treated to the first supply portion and the second supply portion; an air blower for guiding the gas to be treated to said first supply portion and said second supply portion; a circulation passage for connecting said first regenerative chamber and said second regenerative chamber with said supply passage; a first switching valve and a second switching valve provided in said circulation passage; and a control portion that carries out an exhaust gas purifying mode, and an adhesion substance removing mode.

Description

Regenerative exhaust gas purification device

The present invention relates to a regenerative exhaust gas purifying apparatus, and more particularly to a regenerative exhaust gas purifying apparatus which performs purifying treatment of exhaust gas using a regenerator.

In the past, the exhaust gas purification device described in the patent document 1 has been used, and the facility, the printing industry (gravure printing, lithography), the coating facility, the chemical factory, and the chemical industry have been used in the industry (multilayer packaging, adhesive tape, etc.). Exhaust gas containing flammable and toxic components such as volatile organic compounds (VOC) produced by facilities in the electronics/ceramic industry and factory cleaning facilities is purified.

The exhaust gas purifying apparatus includes, for example, a plurality of regenerators that house the regenerator, a combustion chamber that communicates with the upper side of the regenerators, and an air supply/exhaust valve that supplies a pair of air supply/exhaust valves provided below the regenerator mouth. In this exhaust gas purifying apparatus, the supply/gas exhaust valve of the regenerator is used to switch the supply/exhaust of the exhaust gas to perform the purification process of the exhaust gas.

[Previous Technical Literature]

[Patent Literature]

Patent Document 1: Japanese Laid-Open Patent Publication No. 2004-77017

However, in the conventional exhaust gas purifying apparatus, when the exhaust gas containing a high-boiling substance such as a tar component is treated, there is a problem that a high-boiling substance adheres to the heat accumulating body, and further, if the exhaust gas treatment is continued in a state in which the high-boiling substance adheres, there is The problem that the regenerator is clogged and the exhaust gas cannot flow. Further, in order to remove the high-boiling substance adhering to the heat storage body, it is necessary to have a complicated structure, and thus the exhaust gas purification apparatus itself is complicated and the cost is high.

Accordingly, an object of the present invention is to provide a regenerative exhaust gas purifying apparatus which can remove high-boiling substances adhering to a regenerator by a simple structure.

In order to achieve the above object, the present invention is a regenerative exhaust gas purifying apparatus that purifies a gas to be treated by using a heat storage body, and has a first regenerator and a second regenerator, and houses the first regenerator and the second regenerator, respectively. The combustion chamber is provided to communicate with one of the first regenerators and the second regenerator, and includes a heating means; the first supply unit and the second supply unit are disposed in the first regenerator and the first The other end of each of the two regenerators is provided with a supply switching valve for supplying a gas to be processed, and the first discharge portion and the second discharge portion are respectively provided in the first regenerator and the second regenerator. One end is provided with a discharge on-off valve, and at the same time, the process gas is discharged; the supply passage is connected to the first supply unit and the second supply unit for supplying the gas to be processed; and the blower is provided in the supply passage. The gas to be treated is introduced into the first supply unit and the second supply unit, and the circulation passage is connected to the other end side of the first regenerator and the second regenerator, and the first switching valve for the circulation passage is provided. In the circulation path and will be from the other 1st regenerator Gas from the end side to the supply path The flow is opened or closed; the second switching valve for the circulation passage is provided in the circulation passage, and the gas flow from the other end side of the second regenerator to the supply passage is opened or closed; and the control unit performs purification to treat the gas to be treated. The exhaust gas purification mode and the deposit removal mode in which the substances attached to the first heat storage body and the second heat storage body are removed by using the gas for removing the deposits; wherein, in the deposit removal mode, the control unit controls the supply switching valve The discharge switching valve, the first switching valve for the circulation passage, and the second switching valve for the circulation passage achieve the operation of causing the blower to act to cause the deposit removing gas to flow into the supply passage, and the deposit removing gas passes through The second heat storage body is heated and heated in the fuel chamber, and the temperature of the first heat storage body is raised by the first heat storage body to remove the substance adhering to the first heat storage body, and then the gas for removing the deposit is circulated. The passage returns to the supply passage, and the blower is actuated to cause the deposit removing gas to flow into the supply passage, and the deposit removing gas is added by the first heat accumulating body. , And is heated in the fuel chamber, whereby the temperature rise of the second heat storage element by the second regenerator to remove material adhering to the second heat storage element, the deposit is removed thereafter so that a gas circulating path through the supply passage and return.

In the present invention, the regenerative exhaust gas purifying apparatus is configured such that a circulation passage that connects the other end side of each of the first regenerator and the second regenerator to the supply passage and a circulation passage are provided. In the simple structure of the first on-off valve for the circulation passage and the second on-off valve for the circulation passage, the "attachment removal mode" can be performed in addition to the "exhaust gas purification mode", whereby the "attachment removal mode" can be removed. A high-boiling substance attached to the first heat storage body and the second heat storage body.

In the present invention, it is preferable that the circulation passage is connected to the other end side of the first regenerator and the second regenerator, and to the upstream side of the blower connected to the supply passage.

In the present invention configured as described above, since the circulation passage is connected to the upstream side of the blower of the supply passage, the gas system for removing the deposits returned to the supply passage by the circulation passage is re-established at the position on the upstream side of the blower. The gas for removing adhering substances that have flowed in the supply passage is mixed and cooled, so that the equipment on the downstream side of the blower and the blower does not need to have heat resistance.

Preferably, the present invention further includes a first temperature detector that detects the temperature of the other end side of the first regenerator, and a second temperature detector that detects the temperature of the other end side of the second regenerator, the first temperature detector and When the temperature detected by the second temperature detector is within a specific range, the control unit executes the deposit removal mode.

In the present invention, when the temperature detected by the first temperature detector and the second temperature detector is within a specific range, the deposit removal mode is performed, so that the first heat storage body and the first heat storage body can be reliably removed. 2 high-boiling substance of the regenerator.

Preferably, the present invention further includes a circulation passage adjusting valve that is disposed in the circulation passage and adjusts a flow rate of the gas for removing the deposits returning to the supply passage when the deposit removal mode is performed, and the control portion is in the deposit removal mode. The opening of the regulating valve is controlled by the circulation passage.

In the present invention, the flow rate of the gas for removing the deposits returned to the supply passage is adjusted by the regulating valve for the circulation passage, so that the amount of hot air supplied to the first heat storage body and the second heat storage body can be controlled. Therefore, a suitable high boiling point substance can be removed.

In the present invention, it is preferable that the control unit controls the opening degree of the circulation passage regulating valve so that the air volume flowing through the circulation passage is within a range of 1 to 20% of the rated air volume of the air blower.

According to the invention as constituted by the above aspect, the air volume flowing through the circulation passage is in the range of 1 to 20% of the rated air volume of the blower, so that the hot air required to remove the high-boiling substance can be supplied to the first heat storage body and the second heat storage unit. The body is prevented from damaging the first heat storage body and the second heat storage body by rapid heating.

In the present invention, the preferred control unit is controlled in the exhaust gas purifying mode when the supply switching valve and the discharge supply valve are all in the open state in the switching operation of the supply switching valve and the discharge supply valve. Controlling both the first switching valve for the circulation passage and the second switching valve for the circulation passage to be opened, and further controlling both the first switching valve for the circulation passage and the second switching valve for the circulation passage to be closed when the switching operation is completed. .

In the present invention, in the exhaust gas purification mode, when both the supply switching valve and the discharge supply valve are in an open state, both the first switching valve for the circulation passage and the second switching valve for the circulation passage are controlled. Since it is turned on, it is possible to prevent the gas to be treated from leaking when the supply switching valve and the discharge supply valve are all in the open state.

In the present invention, it is preferable to further include a switching valve for merging, which is connected to the supply passage and is provided in the merging portion, and the merging portion merges the gas for removing the deposits with the gas to be treated before flowing into the blower. The on-off valve system can be kept open or closed and the opening can be adjusted.

In the present invention thus constituted, the on-off switching valve can be kept in the open state or the closed state and the opening degree can be adjusted, so that the installation space can be reduced and the control can be simplified. Further, it is most appropriate to adjust the mixing ratio of the gas for deposit removal of the gas to be treated by adjusting the opening degree of the flow switching valve.

In the present invention, it is preferable that the switching valve for a combined flow has a flow port forming member provided with a flow port, and a valve body having a proximity and a distance An abutting portion that moves in a direction in which the flow port forming member moves, and a flow rate adjusting portion that is integrally formed in the abutting portion. When the contact portion moves in the direction of approaching the flow port forming member and abuts against the flow port forming member, the gas for removing the deposit is prevented from flowing into the supply path from the flow port of the flow port forming member. When the abutting portion abuts against the flow port forming member, the flow rate adjusting portion is inserted into the flow port, and the flow rate adjusting portion moves the flow rate adjusting portion when moving in a direction away from the contact portion. The fluid flow gap between the flow ports is gradually increased.

In the present invention, it is preferable to form the flow rate adjusting portion in the shape of a truncated cone.

In the present invention, it is preferable that the supply switching valve and the discharge switching valve each have a first member provided with a gas flow port through which a gas to be treated or a process gas flows, and a second member which is close to And moving away from the first member, and closing the gas flow port when contacting the first member, and opening the gas flow port when leaving the first member; and driving the second member Drive in the direction of arrival and departure. Any one of the first member and the second member is integrally formed with the surrounding wall portion, and the surrounding wall portion surrounds a portion outside the gas flow port; and the other of the first member and the second member corresponds to A sealing member is provided at a position surrounding the wall portion. The width of the sealing member is wider than the thickness of the surrounding wall portion and is formed to surround the gas flow port. When the first and second members are close to each other and the surrounding wall portion abuts, the sealing member It will be deformed to prevent the gas to be treated from flowing out of the abutting portion.

According to the regenerative exhaust gas purifying apparatus of the present invention, the high boiling point substance adhering to the heat accumulating body can be removed by a simple structure.

1, 70, 80, 101‧‧‧ Regenerative exhaust gas purification device

8‧‧‧ Temperature detector

9‧‧‧ burner

10‧‧‧ combustion chamber

11.12‧‧‧ A pair of regenerators (1st regenerator, 2nd regenerator)

11a‧‧‧The lower part of the regenerator 11

12a‧‧‧The lower part of the regenerator 12

14, 15‧‧‧Supply on/off valve

14a, 15a, 16a, 17a‧‧‧ body

14b, 15b, 16b, 17b‧‧ ‧ cylinder

16, 17‧‧‧ Discharge valve for discharge

14c, 15c, 16c, 17c‧‧‧ pole

20, 21‧‧ ‧ supply port

22,23‧‧‧Export

26, 27‧‧ ‧ regenerator

28‧‧‧Exhaust duct

29‧‧‧Supply conduit

30‧‧‧Air blower

31‧‧‧The first on-off valve for circulating piping

32‧‧‧Second on-off valve for circulation piping

33‧‧‧Recycling piping

33a‧‧‧1st return to the Ministry of Management

33b‧‧‧2nd return piping department

33c‧‧‧ Confluence Department

33d‧‧‧Confluence Pipe Department

34‧‧‧Switching valve for circulating piping

35‧‧‧1st temperature detector

36‧‧‧2nd temperature detector

37‧‧‧Control Department

38‧‧‧Supply on/off valve

39‧‧‧ Confluence Department

40, 45‧‧‧Concurrent on-off valve

40a, 45a‧‧‧ ontology

40b, 45b‧‧‧ fluid inlet

40c, 45c‧‧‧ fluid outlet

41‧‧‧ Circulation forming member

41a, 61a‧‧ ‧ circulation

42, 46, 47‧‧ ‧ body

42a‧‧‧Apartment

42b‧‧‧Flow Adjustment Department

43, 48‧‧‧ drive

43a‧‧‧ rod

43b‧‧‧Sliding members

43c‧‧‧Sliding surface

44‧‧‧ opening detection department

44a‧‧‧Abutment components

51‧‧‧ Pressure detector

61‧‧‧Circulation port forming members

61b, 64‧‧‧ Sealing members

64a‧‧‧Installation components

65‧‧‧ switch valve

66‧‧‧1st component

66a‧‧‧ gas flow port

67‧‧‧2nd component

68b‧‧‧Drive Department

68c‧‧‧ rod

69‧‧‧Bound wall

71‧‧‧1st side catheter

72‧‧‧2nd side catheter

73, 75, 76, 81a‧‧‧ adjustment valve

74‧‧‧Heat recovery system

74a‧‧‧Water Supply Department

74b‧‧‧Vapor Recovery Department

74c‧‧‧Exhaust gas discharge

77‧‧‧ Pressure detector

81‧‧‧ side duct

82‧‧‧ heat exchanger

82a‧‧‧Atmospheric Supply Department

82b‧‧‧Hot Wind Conductor

82c‧‧‧Exhaust exhaust

83‧‧‧Dry production line

83a‧‧‧Supply Department

83b‧‧‧Exporting Department

83c‧‧‧Connecting catheter

84, 86, 88‧‧‧ fans

85‧‧‧temperature regulator

87‧‧‧Filter box

Fig. 1 is a schematic view showing a regenerative exhaust gas purifying apparatus according to an embodiment of the present invention, showing a deposit removal mode.

Fig. 2 is a schematic view showing a general operation of the heat storage type exhaust gas purifying apparatus shown in Fig. 1.

Fig. 3 is a schematic view showing a general operation of the regenerative exhaust gas purifying apparatus shown in Fig. 1, and switching switching of the switching valves of the supply port and the discharge port of the pair of regenerators in the state shown in Fig. 2; The state after the action.

Fig. 4 is a schematic view showing a state in which the switching valve of the regenerative exhaust gas purifying apparatus shown in Fig. 1 is switched.

Fig. 5 is a schematic view showing a regenerative exhaust gas purifying apparatus of a comparative example of the regenerative exhaust gas purifying apparatus shown in Fig. 4.

Fig. 6 is a schematic view showing a merging switching valve of the regenerative exhaust gas purifying apparatus shown in Fig. 1. (a) is a schematic diagram showing a switching function and an opening degree adjustment function of the on-off switching valve, (b) is a schematic view for explaining a function of detecting an opening degree of the on-off switching valve, and (c) is a confluence switching switch. A schematic view of a modified example of the valve.

Fig. 7 is a schematic view for explaining the position and each state of the valve body of the closing switch valve shown in Fig. 6 (a) and (b). (a) is a cross-sectional view showing a fully closed state, (b) is a cross-sectional view showing a semi-closed state, and (c) is a cross-sectional view showing a fully open state.

Fig. 8 is a schematic view showing a specific example of a supply switching valve and a discharge switching valve of the regenerative exhaust gas purifying device shown in Fig. 1. (a) is an example of an on-off valve, and (b) is a modification of the high gas leakage prevention effect of the on-off valve.

Fig. 9 is a schematic view showing a modification of the regenerative exhaust gas purifying apparatus of the present invention. (a) shows a regenerative exhaust gas purifying device with additional bypass ducts and heat recovery ducts (b) is a schematic view showing another modification of the regenerative exhaust gas purifying apparatus in which a bypass duct is additionally provided.

Fig. 10 is a perspective view showing an example of the appearance (the arrangement of the components) of the regenerative exhaust gas purifying apparatus shown in Fig. 9(a).

Fig. 11 is a perspective view showing an example of the appearance (the arrangement of the components) of the regenerative exhaust gas purifying apparatus shown in Fig. 9(b).

Hereinafter, a regenerative exhaust gas purifying apparatus according to an embodiment of the present invention will be described with reference to the drawings. This regenerative exhaust gas purifying apparatus is suitable for treating a poison gas containing a flammable toxic component such as an organic volatile compound.

As shown in FIG. 1 to FIG. 3, the regenerative exhaust gas purification device 1 according to the embodiment of the present invention includes a combustion chamber 10 and a pair of regenerators 11 and 12 (the first regenerator 11 and the second regenerator) 12), one of the ends (upper end) is connected to the combustion chamber 10 to communicate. The combustion chamber 10 is provided with a temperature detector 8 and a burner 9.

Further, the regenerative exhaust gas purifying apparatus 1 includes supply ports 20 and 21 which are provided at the other end (lower end) of the pair of regenerators 11 and 12 and which are supplied with the on-off valves 14 and 15 and are supplied with the gas to be processed ( The first supply port 20 and the second supply port 21). Further, the other ends (lower ends) of the pair of heat storage chambers 11 and 12 are provided, and the discharge switching valves 16 and 17 are provided, and the gas discharge ports 22 and 23 are discharged (the first discharge port 22 and the second row). Exit 21).

In addition, the regenerative exhaust gas purification device 1 is provided in a plurality of regenerators 26 and 27 (the first regenerator 26 and the second regenerator 27), which are provided at one end (upper end) of the regenerators 11 and 12, respectively. Between one end (lower end). The structure of the heat accumulators 26, 27 is a ceramic member having a plurality of through holes adjacent to each other and side by side.

Further, the regenerative exhaust gas purification device 1 includes an exhaust duct 28 connected to the discharge ports 22 and 23. The exhaust duct 28 is a passage through which the process gas is discharged from the regenerative exhaust gas purifying device 1 and introduced into a specific place.

The regenerative exhaust gas purification device 1 includes a supply conduit 29 connected to the supply ports 20 and 21. The supply duct 29 is for supplying a gas to be treated to a passage in the regenerative exhaust gas purifying device 1. The supply duct 29 is provided with a blower 30. The blower 30 introduces the gas to be processed into the supply ports 20 and 21 and simultaneously introduces them into the regenerators 11 and 12 and the combustion chamber 10. At the same time, the blower 30 introduces the process gas into the specific discharge through the discharge ports 22 and 23 and the exhaust duct 28.

The regenerative exhaust gas purification device 1 includes a circulation pipe 33 that connects the other end sides of the regenerators 11 and 12 to the supply conduit 29, and merges the gas on the other end side of the regenerators 11 and 12 with the gas before flowing into the blower 30. . The circulation pipe 33 is connected to the supply duct 29 at a position on the upstream side of the blower 30. Therefore, the circulation pipe 33 temporarily returns the gas flowing into the other end side of the heat storage bodies 11 and 12 to the upstream side of the blower 30. The function of the piping.

The circulation pipe 33 is provided with a first switching valve 31 for circulating piping, a second switching valve 32 for circulating piping, and a regulating valve 34 for circulating piping. The first switching valve 31 for circulating piping flows into and out of the supply conduit 29 from the other end side of the regenerator 11 of one of the circulation pipes. The second switching valve 32 for circulation piping flows into and out of the supply conduit 29 from the other end side of the other heat storage chamber 12. The circulation pipe regulating valve 34 is provided in the circulation pipe 33, and adjusts the flow rate of the gas that flows into the supply conduit 29 from the other end side of the regenerators 11 and 12 of the other and the other.

In other words, the circulation pipe 33 has a first return pipe portion 33a and a second return pipe portion 33b that are connected from the lower portions 11a and 12a of the heat storage chambers 11 and 12, respectively; And a merging pipe portion 33d formed by the merging portion 33c where the first and second return pipe portions 33a and 33b are joined together (the merging portion 33c is formed by a branch pipe). This merging pipe portion 33d is connected to the supply duct 29. The first switching valve 31 for circulation piping is provided in the first return piping portion 33a. The second switching valve 32 for circulation piping is provided in the second return piping portion 33b. The circulation pipe adjustment valve 34 is provided in the junction pipe portion 33d.

The regenerative exhaust gas purification device 1 includes a first temperature detector 35 that detects the temperature of the other end side portion (lower portion 11a) of the regenerator 11 and a temperature that detects the other end side portion (lower portion 12a) of the regenerator 12 The second temperature detector 36.

Further, the regenerative exhaust gas purifying apparatus 1 is provided with a control unit 37 for performing an "exhaust gas purifying mode for purifying the gas to be treated" and "exclusion removing mode for removing the substance adhering to the heat accumulating body" which will be described later.

The supply conduit 29 is provided with a supply on-off valve 38 between a supply source (a discharge facility for exhaust gas) to be treated. Further, the supply duct 29 is connected to the merging portion 39, and is connected to the duct, and before the air blows into the blower 30, the air (outside air) at normal temperature from which the deposit gas is removed is merged before the flow from the circulation pipe 33. The gas to be treated. The merging portion 39 is provided with a convection on-off valve 40, and by opening the convection on-off valve 40, air (outside air) at a normal temperature from which the deposit gas is removed flows into the supply conduit 29.

The merging switching valve 40 is, for example, shown in Fig. 6(a) to be described later, and can be kept in an open state or an closed state, and can be adjusted in an opening degree to adjust the flow rate of the fluid that merges from the merging portion 39. Further, instead of the merging fluid switching valve 40, the merging switching valve 45 as shown in Fig. 6(c) may be used. When the control unit 37 is in the deposit removal mode, the supply switching valve 38 is closed, and the closing switching valves 40 and 45 are opened.

The on-off valves 14 and 15 of the supply ports 20 and 21 and the on-off valves 16 and 17 of the discharge ports 22 and 23 are so-called lift dampers (push valves), which can be used for switching the flow direction of the gas. The switching valves 14 to 17 have valve bodies 14a, 15a, 16a, 17a and cylinders 14b, 15b, 16b, 17b, respectively. The valve bodies 14a to 17a are movable in the vertical direction. That is, the valve bodies 14a to 17a are attached to the front ends of the rods 14c, 15c, 16c, 17c of the cylinders 14b to 17b, and are moved in accordance with the expansion and contraction of the rods 14c to 17c.

The switching valves 14 to 17 as described above are switched every time a predetermined time elapses, thereby switching the supply side (supply side to be treated) and the exhaust side (discharge processing gas side) of the regenerators 11 and 12 to operate. . Further, the timing of switching the switching valve can be performed based on the temperature of the inlet and outlet (the temperature of the gas supplied to the gas and the exhaust gas is measured by the temperature detector).

Next, an exhaust gas purifying method to be carried out in the "gas purification mode to be treated" of the regenerative combustion type exhaust gas purifying device 1 of the present embodiment will be described with reference to Figs. 2 and 3 . The arrows in FIGS. 2 and 3 show the flow of the gas to be treated which flows in through the opening supply switching valve 38 and the gas after the purification treatment.

First, as shown in Fig. 2, the regenerator 11 is on the supply side, and the regenerator 12 is on the discharge side. The treated exhaust gas passes through the supply port 20 and reaches the regenerator 11 .

Next, when the exhaust gas passes through the heat storage body 26 on the heat storage chamber 11 side, it is heated by heat exchange with the heat storage body 26. Further, the heat storage body 26 is cooled and cooled. The exhaust gas heated by the heat storage body 26 and reaching the combustion chamber 10 is burned and decomposed by the contained components in the combustion chamber 10.

Then, the post-combustion treatment gas-passing system passes through the regenerator 27 of the regenerator 12 . At this time, the treatment gas system is cooled by heat exchange with the heat storage body 27. but. On the other hand, the heat storage body 27 is stored in heat. The cooled treatment gas system reaches the exhaust conduit 28 through the discharge port 23.

When this operation is continued, the regenerator 26 of one of the regenerators 11 is cooled and cooled, and the other regenerator 27 is stored and heated. Therefore, after a certain period of time, as shown in Fig. 3, the on-off valve 14 of the supply port 20 of the regenerator 11 is closed, and the on-off valve 16 of the discharge port 22 is opened. At the same time, the on-off valve 15 of the supply port 21 of the regenerator 12 is opened, and the on-off valve 17 of the discharge port 23 is closed. By this operation, as shown in FIG. 3, the flow direction of the gas is reversed, and the regenerator 11 is switched to the discharge side and the regenerator 12 is on the supply side.

Thereby, the exhaust gas to be treated can be heated by heat exchange with the heat storage body 27 which is sufficiently heat-storing. The heated exhaust gas is treated in the combustion chamber 10, and is cooled by heat exchange with the heat storage body 26 to be exhausted. After a certain period of time, the on-off valve 14 of the supply port 20 of the regenerator 11 is opened, and the on-off valve 16 of the discharge port 22 is closed. At the same time, the on-off valve 15 of the supply port 21 of the regenerator 12 is closed, and the on-off valve 17 of the discharge port 23 is opened. By this operation, as shown in FIG. 2, the flow direction of the gas is reversed, and the regenerator 11 is switched to the supply side and the regenerator 12 can be discharged.

By repeating the above operation at regular intervals and continuing the operation, it is possible to carry out an efficient combustion process (exhaust gas purification mode) using exhaust heat.

Next, the method of removing the attached matter which is carried out by the "removed deposit mode" of the high-boiling substance adhering to the heat storage bodies 11 and 12 of the heat storage combustion type exhaust gas purifying apparatus 1 of the present embodiment will be described with reference to FIG. The arrow in the first drawing shows the flow of air (outside air) through the gas for deposit removal which flows in through the on-off valve 40.

The control unit 37 is based on, for example, a preset time or first and second The removal of the attachment pattern is performed as a result of the detection by the temperature detectors 35, 36.

First, the case where the high-boiling dirt adhering to the second heat storage body 27 is removed in the removal of the deposit pattern will be described. The control unit 37 closes the supply on-off valve 38 and opens the confluence on-off valve 40. Further, as shown in Fig. 1, the control unit 37 opens the on-off valves 14 and 16 on the side of the regenerator 11 and closes the on-off valves 15 and 17 on the side of the regenerator 12 . The control unit 37 opens the second switching valve 32 for circulation piping, and closes (maintains and closes) the first switching valve 31 for the circulation piping.

Further, the control unit 37 adjusts the opening degree of the merging switching valve 40 based on the detection output of the static pressure (static pressure of the external air intake portion) of the supply conduit 29 that is detected by the pressure detector 51 after the merging portion 39 is merged. . For example, the static pressure (other than the static pressure of the gas intake portion) is preferably in the range of -1.5 to 0 kPa.

Further, the control unit 37 sets the air volume of the blower 30 to be constant (20 to 100% of the rated air volume). From the viewpoint of temperature and the like, it is necessary to dilute to some extent by 20% or more. The air blown by the blower 30 is supplied to the outside air through the on-off valve 40 for merging. The gas (outside air) that is blown by the blower 30 flows into the lower portion 11a of the regenerator 11 through the supply port 20. At this time, the opening and closing valve 16 of the discharge port 22 is also opened, so that most of the external air that has flowed in does not pass through the heat storage body 26, and is discharged to the outside of the apparatus through the discharge port 22 and the discharge duct 28.

The on-off valves 15 and 17 on the regenerator 12 side are closed, the second switching valve 32 for the circulation pipe on the regenerator 12 side is opened, and the first switching valve 31 for the circulation pipe on the regenerator 11 side is closed, so that the regenerator 12 is in the regenerator 12 The lower portion 12a is subjected to a negative static pressure. This is because the lower portion 12a is connected to the suction side (upstream side) of the blower 30 by the circulation pipe 33. By the negative static pressure of the lower portion 12a, a part of the gas (air) flows from the supply port 20 to the lower portion 11a of the regenerator 11 via the heat storage. The body 26, the combustion chamber 10, and the heat storage body 27 flow into the lower portion 12a of the regenerator 12. At this time, the amount of air returned from the lower portion 12a to the supply pipe 29 via the circulation pipe 33 of the return pipe is adjusted by the circulation pipe adjustment valve 34.

In addition, at this time, the amount of air flowing through the circulation pipe 33 is in the range of 1 to 20% of the rated air volume of the blower 30, and the control unit 37 can remove the appropriate high-boiling substance by controlling the circulation pipe adjustment valve 34. When it is less than 1%, high-boiling substances cannot be removed because sufficient hot air is not supplied to the heat storage body. If it exceeds 20%, the heat storage body is heated rapidly, which may cause damage due to thermal shock of the heat storage body. Therefore, the so-called rated gas volume is the standard performance of the blower, which is the same as the maximum process air volume in the regenerative exhaust gas purifying device.

The outside air that has flowed into the regenerator 26 of the regenerator 11 is heated by the regenerator 26 and heated in the combustion chamber 10. At this time, the combustion chamber 10 controls the output of the burner 9 by the control unit 37 in accordance with the detection result of the temperature detector 8, and adjusts the inside of the combustion chamber 10 to about 500 to 1000 °C. When the gas passes through the heat storage body 27 of the heat storage chamber 12 when the combustion chamber 10 is heated, the temperature of the heat storage body 27 rises by heat exchange with the heat storage body 27. Thereby, the high boiling point substance adhering to the second heat storage body 27 is removed.

Then, the high-boiling substance of the first heat storage body 26 is removed by switching the respective valves. At this time, the control unit 37 turns off the on-off valves 14 and 16 on the regenerator 11 side, and opens the on-off valves 15 and 17 on the regenerator 12 side. The control unit 37 closes the second switching valve 32 for circulating piping and opens the first switching valve 31 for circulating piping. As a result, the gas flowing into the lower portion 12a of the regenerator 12 through the supply port 21 does not pass through the heat storage body 27, but is discharged to the outside of the apparatus through the discharge duct 28. A part of the air (air) that has flowed into the lower portion 12a flows into the lower portion 11a of the heat storage chamber 11 via the heat storage body 27, the combustion chamber 10, and the heat storage body 26, and passes through the circulation pipe 33. Return to the supply conduit 29. Similarly to the case of the second heat storage body 27, the high boiling point substance of the first heat storage body 26 can be removed.

In the case of Fig. 1, the temperature of the second heat storage body 27 is managed based on the detection result of the second temperature detector 36. When the valve is switched and the high-boiling substance of the first heat storage body 26 is removed, the temperature is managed based on the detection result of the first temperature detector 35. The detection results of the first and second temperature detectors 35 and 36 are preferably about 100 to 500 ° C, respectively. The time to reach the so-called bakeout temperature of the high-boiling substance attached to the heat storage body 27 is preferably from 1 to 5 hours. The holding time of the baking temperature is preferably from 0 to 5 hours (and sometimes not maintained). The baking temperature is about 100 to 500 °C.

The air system that has passed through the circulation pipe 33 from the lower portion 12a of the regenerator 12 is mixed with the intake air from the merging switching valve 40, and is cooled and passed through the blower 30. Thereby, the device for passing the blower 30 and thereafter is not required to have heat resistance. After the completion of the heating and holding, the cooling of the heat storage body is slowly cooled by the cooling time of 2 hours or more.

As described above, according to the heat storage combustion type exhaust gas purifying apparatus 1 of the present embodiment, the high boiling point substance adhering to the heat storage body can be removed by a simple structure. Further, the blower 30 is not required to be heat resistant. The high-boiling substance can be removed while preventing the damage of the heat storage body, and the service life of the heat storage body can be prolonged.

Next, another advantage exhibited by the "exhaust gas purification mode" of the regenerative exhaust gas purifying apparatus of the present embodiment will be described with reference to Figs. 2 to 4 .

In the general exhaust gas purification operation (exhaust gas purification mode), the control unit 37 of the regenerative combustion type exhaust gas purification device 1 controls the on-off valve to open and close the supply port of the regenerator of one of the regenerators (for example, FIG. 2) In the case where the on-off valve 14) provided at the supply port 20 of the regenerator 11 is open, the on-off valve is provided at the discharge port (Fig. 2) In the case where the on-off valve 16) provided in the discharge port 22 is closed, and the on-off valve provided in the supply port of the other regenerator (for example, the case of Fig. 2 is provided at the supply port 21 of the regenerator 12) The on-off valve 15) is closed, and the on-off valve provided in the discharge port (in the case of Fig. 2, the on-off valve 17 provided at the discharge port 23) is opened.

From the state shown in FIG. 2, the control unit 37 controls each of the on-off valves to switch the on-off valve 14 of the supply port provided in one of the regenerators from on to off (switching to the state shown in FIG. When the switching valve 16 of the discharge port provided in one of the regenerators is switched from off to on, and the on-off valve 15 of the supply port provided in the other regenerator is switched from off to on, and The on-off valve 17 of the discharge port provided in the other of the regenerators is switched from on to off. At the same time, as shown in FIG. 4, the control unit 37 controls the switching valve 31 for the circulation pipe provided in the regenerators 11 and 12 of one and the other, and the switching operation of the switching valves. 32 becomes open. Here, the on-off valves 14 to 17 shown in Fig. 4 show a state in which the state is shifted from the state of Fig. 2 to the state of Fig. 3. That is, in the switching operation of the poppet type switching valves 14 to 17, the opening and closing valves of the discharge port and the supply port may be opened.

Further, from the state shown in Fig. 3, the control unit 37 controls the on-off valve to switch the on-off valve 14 of the supply port provided in one of the regenerators from off to on (switching to Fig. 2) In the state of time, the on-off valve 16 of the discharge port provided in one of the regenerators is switched from on to off, and the on-off valve 15 of the supply port provided in the other regenerator is switched from on to off, and The switching valve 17 of the discharge port provided in the other of the regenerators is switched from off to on. At the same time, as shown in FIG. 4, the control unit 37 controls the switching valve 31 for the circulation pipe provided in the regenerators 11 and 12 of one and the other during the switching operation of the on-off valves. 32 becomes open. In addition, the on-off valves 14 to 17 shown in Fig. 4 are shown from Fig. 3 The state moves to the state of the state of Fig. 2. That is, in the switching operation of the poppet type switching valves 14 to 17, the opening and closing valves of the discharge port and the supply port may be opened.

The control unit 37 closes the opened circulation pipe switching valves 31 and 32 after the switching operation of the switching valve is completed. In other words, in the operation mode (exhaust gas purification mode) other than the switching operation of the on-off valve, the circulation pipe switching valves 31 and 32 of the regenerators 11 and 12 provided in one and the other are basically closed. Further, the switching valves 31 and 32 for the circulation piping are opened from the start of the switching operation of the switching valves to the end of the operation.

By the above operation, the treatment of the gas to be processed can be realized. However, before explaining this advantage, the regenerative exhaust gas purifying apparatus 101 of the comparative example shown in Fig. 5 will be described. The regenerative exhaust gas purifying apparatus 101 of the comparative example does not include the circulation piping 33 and the circulating piping opening and closing valves 31 and 32, and the other configuration is the same as that of the regenerative exhaust gas purifying apparatus 1 shown in FIGS. 1 to 4 . In other words, the regenerative exhaust gas purifying apparatus 101 includes the combustion chamber 10, the regenerators 11, 12, the on-off valves 14 to 17, and the like. Similarly to Fig. 4, Fig. 5 also shows the state in the switching operation of the switching valves 14 to 17. In the state of Fig. 5, the gas to be treated which flows from the supply port 20 into the lower portion 11a of the regenerator 11 may flow into the combustion chamber 10 without passing through the regenerator 26 but may flow through the discharge port 22 At the exhaust duct 28. Since the supply port 20 directly flows into the discharge port 22, a slightly processed gas leaks into the exhaust pipe 28.

On the other hand, when the switching operation method shown in FIG. 4 is performed, the lower portions 11a and 12a of the regenerators 11 and 12 are connected to the suction side of the blower 30 via the circulation pipe 33, and become a negative pressure, a gas to be treated. From the lower portion 11a, 12a, the supply conduit 29 is introduced through the circulation pipe 33. Thereby, the gas to be treated can be prevented from flowing out of the exhaust ducts 28 from the discharge ports 22, 23.

As described above, according to the regenerative combustion type exhaust gas purifying apparatus 1, it is possible to prevent the gas to be treated when the switching valves 14 to 17 are switched from leaking slightly to the exhaust duct 28, and to realize the treatment of the gas to be processed. That is, the apparatus 1 can be configured to perform accurate exhaust gas treatment with a simple configuration.

Next, the above-described merging switching valve will be described with reference to FIGS. 6 and 7. The merging switch valve 40 includes a flow port forming member 41 in which the flow port 41a is provided, a valve body 42, an actuator 43 that drives the valve body 42 in the vertical direction, and an opening degree detecting unit 44. Further, a fluid inlet 40b and a fluid outlet 40c are provided in the body 40a of the on-off valve 40 for merging. The valve body 42 has an abutting portion 42a that is movable in a direction approaching and away from the flow port forming member 41, and a flow rate adjusting portion 42b integrally formed in the abutting portion 42a. The abutting portion 42a has a sealing surface, and prevents the fluid from flowing into the supply conduit 29 from the flow port 41a of the flow port forming member 41 when moving in the direction of approaching the flow port forming member 41 and abutting against the flow port forming member 41. . Figure 7 (a) shows the state of this full shutdown.

The flow rate adjusting portion 42b is inserted into the flow port 41a in a state where the contact portion 42a abuts against the flow port forming member 41. The flow rate adjustment unit 42b is formed such that the gap between the flow rate adjustment unit 42b and the flow port 41a is gradually increased when moving in the direction away from the contact portion 42a. For example, the flow rate adjusting portion 42b is formed in a truncated cone shape (cone). Fig. 7(b) shows a state in which the flow rate is adjusted between the full closing and the full opening (opening degree). Fig. 7(c) shows the state of full opening.

The driver 43 is, for example, a cylinder. A rod 43a having a sliding surface 43c is provided on the rod 43a of the actuator 43. That is, the flow regulating portion 42b is provided at one end of the rod 43a, and the sliding member 43b is provided at the other end of the rod 43a. Opening degree The detecting unit 44 has an abutting member 44a that abuts against the sliding surface 43c. The abutting member 44a is attached to the sliding surface 43c side by an attachment member not shown. The sliding surface 43c is inclined with respect to the vertical plane. When the rod 43a is up and down, the posture (angle) of the abutting member 44a changes. The opening degree detecting unit 44 detects the position of the rod 43a of the actuator 43 by the angle of the abutting member 44a, that is, the position of the flow rate adjusting unit 42b. The gap of the fluid flow is changed in accordance with the position of the flow rate adjusting portion 42b, thereby changing the opening degree. In this way, the opening degree detecting unit 44 can detect the opening degree of the closing valve 40 for the merging fluid.

The merging fluid switching valve 40 has both a function of blocking and adjusting. That is, the on-off switching valve 40 can be kept in an open state or an off state as shown in FIGS. 7(a) to (c), and the opening degree can be adjusted to adjust the fluid that merges from the merging portion 39 to the supply conduit 29. flow. The merging fluid switching valve 40 has a function of blocking and adjusting, and the installation space is reduced compared to the merging fluid switching valve 45 of Fig. 6(c) to be described later. Moreover, the function of blocking and adjusting can be performed by driving one valve body 42, so that the control can be simplified and the electric wiring can be reduced.

When the discharge amount of the gas to be treated, that is, the supply amount to the supply conduit 29 is reduced to be smaller than the minimum suction air volume of the blower 30 (about 1/3 of the rated air volume), the merge switching valve 40 can supply an insufficient fluid. . In addition, the on-off valve 40 is also supplied with external air when the concentration of the gas to be treated is high, and the concentration of the gas supplied from the supply conduit 29 to the regenerators 11 and 12 is appropriately adjusted to achieve an appropriate operation. Further, the on-off valve 40 for merging can also adjust the flow rate of the inflowing air when the above-described method of removing the deposits is performed.

Further, the on-off switching valve of the regenerative exhaust gas purifying device 1 is not limited to the confluence switching valve 40 shown in Fig. 6(a). For example, the on-off switching valve 45 shown in Fig. 6(c) may be used. The closing switch valve 45 shown in Fig. 6(c) has: The valve body 46 for flow rate adjustment of the flow rate adjustment function and the valve body 47 for the switch having the function of maintaining the closed state (blocking) and the open state. Further, a fluid inlet 45b and a fluid outlet 45c are provided in the body 45a of the switching valve 45 for merging.

The valve body 47 is a poppet damper (pushing valve) that can be driven by a driver 48 such as a cylinder. The valve body 47 abuts against the fluid outlet 45c to form a fully closed state, and is separated from the fluid outlet 45c to form a fully open state. The valve body 46 is a butterfly damper (butterfly valve) that adjusts the flow rate by rotation.

The merging switching valve 45 also has a function of blocking and adjusting. In other words, the merging switching valve 45 can be kept in the open state or the closed state in the same manner as the merging switching valve 40, and the opening degree can be adjusted, and the flow rate of the fluid merging from the merging portion 39 to the supply conduit 29 can be adjusted.

Next, the configuration of the switching valves 14, 15, 16, and 17 will be described in detail with reference to FIG. The on-off valves 14, 15, 16, and 17 provided in the supply port and the discharge port of the regenerators 11 and 12 have a flow port forming member 61 and a valve body in which the flow port 61a is formed as shown in Fig. 8(a). 14a, 15a, 16a, 17a and cylinders 14b, 15b, 16b, 17b. The flow port forming member 61 also serves as the bottom of the heat storage chambers 11 and 12. A sealing member 61b is provided on the upper surface side of the flow port forming member 61. The sealing member 61b can use, for example, a non-asbestos gasket. The valve bodies 14a to 17a are in contact with the sealing member 61b, thereby blocking the flow of the gas and maintaining the closed state.

Further, the on-off valve for the supply port and the discharge port of the regenerative exhaust gas purifying device 1 is not limited to the on-off valve shown in Fig. 8(a). For example, the on-off valve 65 shown in Fig. 8(b) may be used. The on-off valve 65 shown in Fig. 8(b) has a first member 66 provided with a gas flow port (hereinafter referred to as "flow port") 66a, and is movable in the direction of approaching and leaving the first member 66. Moving the second member 67 and the second member The driving portion 68b that is driven in the direction of abutment and departure. The second member 67 is in contact with the first member 66 to close the flow port 66a, and is separated from the first member 66 to open the flow port 66a. The first member 66 is a flow port forming member. The second member 67 is a valve body and is movable in accordance with the expansion and contraction of the rod 68c of the driving portion 68b.

Any one of the first and second members 66 and 67 (the second member 67 in Fig. 8(b)) is integrated with the surrounding wall portion 69, and the surrounding wall portion 69 surrounds the outer side of the flow port 66a. The part is erected. Any one of the first and second members 66 and 67 (the second member 66 in Fig. 8(b)) is provided with a sealing member 64 at a position corresponding to the surrounding wall portion 69, and the width ratio of the sealing member 64 The thickness of the surrounding wall portion 69 is also wide to surround the flow port 66a. The sealing member 64 is attached to, for example, the mounting member 64a provided in the first member 66. When the first and second members 66 and 67 approach and abut against the surrounding wall portion 69, the sealing member 64 is deformed to prevent the gas from coming out from the abutting portion. The sealing member 64 is preferably a soft material, and may be, for example, a fluororubber (Viton), a sputum foam, or a neoprene foam. The thickness of the surrounding wall portion 69 is a thickness to the extent that the sealing member 64 abuts when the sealing member 64 abuts against the sealing member 64, for example, about 10 mm to 50 mm.

The above-described on-off valve 65 can reduce the contact area by surrounding the wall portion 69 and the soft sealing member 64, thereby increasing the sealing pressure per unit area. Therefore, the on-off valve 65 reduces fluid leakage.

Next, a modification of the regenerative exhaust gas purifying apparatus of the present embodiment will be described with reference to Figs. 9 to 11 . The regenerative exhaust gas purification device 1 may further include a first bypass duct 71 and a second bypass duct 72 that are connected to the combustion chamber 10. The regenerative exhaust gas purifying device 70 to which the first and second bypass pipes 71 and 72 are added is shown in Fig. 9(a) and Fig. 10 . In Fig. 10, the combustion chamber 10 and the regenerators 11, 12 The frame is formed as one body.

The first bypass duct 71 communicates with the combustion chamber 10 and the supply duct 28, that is, the bypass passage that communicates with the discharge side of the combustion chamber 10 and the discharge ports 22, 23. The function of the first bypass duct 71 serves as a heat discharge damper. The first bypass duct 71 has an adjustment valve 73. The regulating valve 73 is a butterfly valve, and the flow of the flowing gas can be adjusted by the rotational force of the valve body. When the first bypass pipe 71 generates excess heat, the combustion gas can be exhausted for the protection device.

The second bypass duct 72 is a heat recovery duct for use in the heat recovery system 74 in which the heat generated in the combustion chamber 10 is provided outside. The second bypass duct 72 has an adjustment valve 75 similar to the adjustment valve 73. The second bypass conduit 72 is in communication with the combustion chamber 10 and the heat recovery system 74, and the treatment gas mixture system after the combustion chamber 10 is burned is introduced into the heat recovery system 74.

The heat recovery system 74 is, for example, a waste heat boiler such as a furnace tube type. The heat recovery system 74 includes a water supply unit 74a that supplies water (soft water or the like) that exchanges heat with the exhaust gas from the combustion chamber 10, and a vapor recovery unit 74b that recovers steam generated by applying heat to the water. Further, the heat recovery system 74 has an exhaust gas discharge portion 74c for discharging the gas after the heat exchange.

Further, the regenerative exhaust gas purifying device 70 includes a regulating valve 76 provided in the exhaust duct 28 and a pressure detector 77 that detects the pressure in the combustion chamber 10. The control unit 37 controls the adjustment valve 76 based on the detection result of the pressure detector 77, and performs heat recovery or heat discharge to realize efficient use of excess heat.

In the regenerative exhaust gas purifying device 70 shown in FIGS. 9(a) and 10, the first and second bypass ducts 71 and 72 are provided in the configuration of the excess heat exhausting duct, but the present invention is not limited thereto. herein. That is, in the regenerative exhaust gas purifying device 80 having only the bypass duct 81 shown in Figs. 9(b) and 11 , the above can be obtained. The same effect of the regenerative exhaust gas purifying device 70. In other words, the regenerative exhaust gas purifying device 80 adds a bypass duct 81, a heat exchanger 82, and the like to the regenerative exhaust gas purifying device 1.

As shown in Fig. 9(b) and Fig. 11, the bypass duct 81 communicates with the combustion chamber 10 and the exhaust duct 28, that is, the discharge side of the combustion chamber 10 and the discharge ports 22, 23. The function of the bypass duct 81 serves as a heat discharge damper. The bypass duct 81 has an adjustment valve 81a similar to the adjustment valve 73. When the bypass duct 81 generates excess heat, the combustion gas can be exhausted for the protection device.

The heat exchanger 82 is provided for heat recovery and is disposed in the exhaust gas conduit 28. The heat exchanger 82 is, for example, a plate type heat exchanger that performs heat exchange between gas and gas. The heat exchanger 82 includes an atmosphere supply unit 82a that supplies an atmosphere that exchanges heat with the process from the combustion chamber 10 and the like, and a hot air conduction unit 82b that guides hot air generated by applying heat to the air. Further, the heat exchanger 82 has an exhaust gas discharge portion 82c for discharging the gas after the heat exchange.

Fig. 11 shows an example in which the heat of recovery is introduced into an applicator (coating) and a drying line 83. That is, the regenerative exhaust gas purifying device 80 shown in Fig. 11 indicates that the exhaust gas from the applicator and the drying line 83 is purified, and the heat generated in the device 80 is recovered and reused in the applicator and the drying line. 83 cases.

The applicator and the drying line 83 have a supply unit 83a for supplying hot air for drying, and a discharge unit 83b for discharging the exhaust gas after drying. The supply unit 83a is connected to the hot air conduction portion 82b via the fan 84 and the temperature adjuster 85. The discharge portion 83b is connected to the conduction conduit 83c that is introduced into the supply conduit 29. The conduction conduit 83c is provided with a fan 86, a filter box 87 and a fan 88 for discharging The exhaust gas of the portion 83b is introduced into the supply conduit 29.

The regenerative exhaust gas purifying device 80 has an adjustment valve 76 and a pressure detector 77 similarly to the device 70. The above-described regenerative exhaust gas purifying device 80 achieves efficient use of excess heat.

The regenerative exhaust gas purifying devices 70 and 80 are also provided with the same configuration as the above-described device 1, that is, the ventilating pipe 33 and the first and second switches for the circulating pipe are provided in the ninth to eleventh drawings. The valves 31 and 32, the circulation piping opening and closing valve 34, the first and second temperature detectors 35 and 36, the control unit 37, and the like. Therefore, in the same manner as the device 1, the devices 70 and 80 can easily remove the high-boiling substance adhering to the heat storage body, and further exert the other effects described above.

1‧‧‧ Regenerative exhaust gas purification device

8‧‧‧ Temperature detector

9‧‧‧ burner

10‧‧‧ combustion chamber

11.12‧‧‧ A pair of regenerators (1st regenerator, 2nd regenerator)

11a‧‧‧The lower part of the regenerator 11

12a‧‧‧The lower part of the regenerator 12

14, 15‧‧‧Supply on/off valve

14a, 15a, 16a, 17a‧‧‧ body

14b, 15b, 16b, 17b‧‧ ‧ cylinder

16, 17‧‧‧ Discharge valve for discharge

14c, 15c, 16c, 17c‧‧‧ pole

20, 21‧‧ ‧ supply port

22,23‧‧‧Export

26, 27‧‧ ‧ regenerator

28‧‧‧Exhaust duct

29‧‧‧Supply conduit

30‧‧‧Air blower

31‧‧‧The first on-off valve for circulating piping

32‧‧‧Second on-off valve for circulation piping

33‧‧‧Recycling piping

33a‧‧‧1st return to the Ministry of Management

33b‧‧‧2nd return piping department

33c‧‧‧ Confluence Department

33d‧‧‧Confluence Pipe Department

34‧‧‧Switching valve for circulating piping

35‧‧‧1st temperature detector

36‧‧‧2nd temperature detector

37‧‧‧Control Department

38‧‧‧Supply on/off valve

39‧‧‧ Confluence Department

40‧‧‧Concurrent switching valve

51‧‧‧ Pressure detector

Claims (10)

A regenerative exhaust gas purifying apparatus that purifies a gas to be treated by using a regenerative exhaust gas purification device including a first regenerator and a second regenerator, respectively accommodating the first heat storage body and the second heat storage body; The chamber is provided to communicate with each of the first regenerator and the second regenerator, and includes a heating means; the first supply unit and the second supply unit are provided in the first regenerator and the first The other end of each of the regenerators is provided with a supply switching valve and supplies a gas to be processed; the first discharge unit and the second discharge unit are respectively disposed in the first regenerator and the second regenerator. The other end is provided with a discharge on-off valve for discharging the processing gas; the supply passage is connected to the first supply unit and the second supply unit for supplying the gas to be processed; and the blower is provided in the supply passage. The gas to be processed is introduced into the first supply unit and the second supply unit, and the circulation passage is connected to the other end side of the first regenerator and the second regenerator to the supply passage; the first switch for the circulation passage Valve, set in the above cycle The path for opening or closing the gas flow from the other end side of the first regenerator to the supply passage; the second switching valve for the circulation passage is provided in the circulation passage for the other from the second regenerator The gas flow from one end side to the above supply passage is opened or The control unit is an exhaust gas purification mode for purifying the gas to be treated, and an attachment removal mode for removing the substances adhering to the first heat storage body and the second heat storage body by using the gas for removing the deposits; In the attachment removal mode, the control unit controls and controls the supply opening and closing valve, the discharge switching valve, the first switching valve for the circulation passage, and the second switching valve for the circulation passage to realize an operation of causing the blower to be actuated The deposit removal gas flows into the supply passage, and the deposit removal gas is heated by the second heat storage body, and is heated in the fuel chamber, whereby the temperature of the first heat storage body is raised by the first heat storage body to remove the adhesion. The material of the first heat storage body is then returned to the supply passage through the circulation passage, and the blower is actuated to cause the deposit removal gas to flow into the supply passage, and the deposit removal gas passes through the first heat storage body. And heated, and heated in the fuel chamber, the temperature of the second heat storage body is raised by the second heat storage body, and the second heat storage body is removed and removed. Material, then the deposit is returned through the circulation passage with a gas supply passage is removed. The regenerative exhaust gas purifying apparatus according to claim 1, wherein the circulation passage is connected to the other end side of each of the first regenerator and the second regenerator, and the upstream side of the blower of the supply passage. s position. The regenerative exhaust gas purifying apparatus according to claim 2, further comprising a first temperature detector that detects a temperature of the other end side of the first regenerator, and a temperature that detects the other end side of the second regenerator In the second temperature detector, when the temperature detected by the first temperature detector and the second temperature detector is within a specific range, the control unit executes the deposit removal mode. The regenerative exhaust gas purifying apparatus according to claim 3, further comprising a loop passage regulating valve that is disposed in the circulation passage and that adjusts an attachment to the supply passage when the deposit removal mode is performed The flow rate of the gas used; in the above-described deposit removal mode, the control unit controls the opening degree of the circulation passage adjusting valve. The regenerative exhaust gas purifying apparatus according to claim 4, wherein the control unit controls an opening degree of the circulation passage adjusting valve such that an air volume flowing through the circulation passage becomes 1 to a rated air volume of the air blower. Within 20%. The regenerative exhaust gas purifying apparatus according to claim 5, wherein the control unit is controlled in the exhaust gas purifying mode in a switching operation of the supply switching valve and the discharge supply valve, the supply When both the on-off valve and the discharge supply valve are in an open state, both the first switching valve for the circulation passage and the second switching valve for the circulation passage are controlled to be opened, and the circulation passage is controlled to be completed when the switching operation is completed. Both the on-off valve and the second on-off valve for the circulation passage are closed. The regenerative exhaust gas purifying apparatus according to claim 6, further comprising a switching valve for merging, which is connected to the supply passage and provided in the merging portion, wherein the merging portion merges the gas for removing the deposits into the inflow The gas to be treated before the blower can be kept open or closed and the opening can be adjusted. The regenerative exhaust gas purifying device according to claim 7, wherein the confluent switching valve system has: a flow port forming member having a flow port; and a valve body having an abutting portion movable in a direction approaching and departing from the flow port forming member, and a flow adjusting portion integrally formed at the abutting portion; When the contact portion moves toward the flow port forming member and abuts against the flow port forming member, the gas for removing the deposit is prevented from flowing into the supply passage from the flow port of the flow port forming member; the contact portion is in contact with the flow. In the state of the port forming member, the flow rate adjusting portion is inserted into the flow port, and the flow rate adjusting portion is configured to move between the flow rate adjusting portion and the flow port when moving in a direction away from the contact portion. The fluid flow gap is gradually increased. The regenerative exhaust gas purifying apparatus according to claim 8, wherein the flow rate adjusting unit is formed in a truncated cone shape. The regenerative exhaust gas purifying apparatus according to claim 7, wherein the supply on-off valve and the discharge on-off valve each have a first member provided with a gas to be treated or a gas to be processed. a flow port; the second member is movable in a direction approaching and away from the first member, and the gas flow port is closed when the first member is abutted, and the gas flow port is opened when the first member is separated. And a driving unit that drives the second member in a direction of abutment and separation; and the first member and the second member are integrally formed with the surrounding wall portion, and the surrounding wall portion surrounds the gas circulation a portion of the outer side of the mouth; the other of the first and second members is provided with a sealing member at a position corresponding to the surrounding wall portion, the width of the sealing member being wider than the thickness of the surrounding wall portion to surround the gas flow port According to this aspect, when the first member and the second member are close to each other and the surrounding wall portion abuts, the sealing member is deformed to prevent the gas to be treated from flowing out from the abutting portion.