TWI482932B - Regenerative combustion exhaust gas purification system and its operation method - Google Patents

Description

Regenerative combustion type exhaust gas purification system and operation method thereof

The present invention relates to a regenerative combustion type exhaust gas purification system having a regenerative combustion type exhaust gas purifying apparatus Regenerative Thermal Oxidizer (hereinafter abbreviated as RTO) and a static pressure fluctuation mitigation suction tube device corresponding to a change in air volume during operation, and an operation method thereof .

More specifically, it relates to a regenerative combustion type exhaust gas purifying system and a method for operating the same, which is to prevent the static pressure fluctuation of the suction pipe from affecting the production equipment of the exhaust gas generating source during the switching of the air brake of the RTO, by connecting the gas discharge production An exhaust pipe for the exhaust fan of the equipment and a regenerative combustion type exhaust gas purification device RTO are connected to the suction pipe, and an atmospheric open pipe is provided, which serves as an air buffer, that is, a buffer for absorbing or mitigating shock, and can relax the open portion and the suction in the atmosphere. The influence of the static pressure fluctuation at the time of switching the air brake of the primary side (production equipment) of the pipe branching portion, and the suction pipe device that can accommodate the fluctuation of the exhaust air volume of the production equipment.

Further, the present invention relates to any one of a plurality of adjustable air locks provided on the gas supply side of the RTO or a plurality of adjustable air locks provided on the gas discharge side, and further comprising at least two or more adjustment types The regenerative combustion type exhaust gas purification system of the exhaust gas supply and discharge device and the operation method thereof can be prevented from being simultaneously opened at the same time as the air brake is reduced.

Further, the present invention relates to a regenerative combustion type exhaust gas purification system further comprising an exhaust gas supply and discharge device for reducing the heat load of the RTO and preventing damage of the heat storage body.

When it is necessary to discharge an exhaust gas containing a harmful substance such as a volatile organic compound (hereinafter referred to as VOC) from a production facility of an exhaust gas generating source, the exhaust gas is decomposed by heating in the RTO to be harmless, and then discharged to the atmosphere. In the exhaust gas flow path from the production equipment to the RTO, for example, a pipe introduced into the atmosphere may be provided in order to adjust the exhaust gas concentration in the RTO. In such a device, a method of providing an air damper for cutting off the exhaust gas and an air damper for opening the atmosphere, such as an open air damper, is also known (JP-A-2002-61822).

However, in the conventional technique, as shown in FIG. 5, when the atmosphere is opened, the RTO is closed (the symbol in the figure is "B", but the symbol is omitted below) and the production equipment A is completely connected by a pipe, and there is an RTO. The problem of static pressure fluctuations when the inlet damper 9 or the outlet damper (not shown) is switched to the production equipment via the pipe. Further, as shown in FIG. 6, the atmosphere opening damper is eliminated and the atmosphere opening pipe 2 is provided to form an air damper, and the influence of the static pressure fluctuation on the production equipment during the switching of the air damper can be alleviated. In this case, there is a problem that the amount of exhaust gas from the production equipment may change due to the production situation, and the exhaust gas from the open air of the atmosphere may leak or attract the atmosphere (air).

Furthermore, the leakage of exhaust gas will also discharge VOCs into the atmosphere, causing problems.

Also, when the atmosphere is attracted, the exhaust gas is diluted and introduced into the RTO. Since the higher the VOC concentration, the more the combustible component is, the fuel cost can be reduced. Therefore, diluting waste and lowering the VOC concentration will result in an increase in fuel costs.

Accordingly, the present invention has been made in view of the above problems, and provides a regenerative combustion type exhaust gas purification system and an operation method thereof, which are provided in an intake pipe for mitigating a static pressure change generated when an RTO air brake is switched. Between the open air pipe and the air blower for RTO installed in the air blower connected to the gas discharge production equipment and the heat storage combustion type exhaust gas purification device RTO, the difference between the suction pipe from the connection production equipment and the RTO The static pressure data of the pressure actuator, by controlling the opening of the air brake or the operation of the inverter operating reverser of the RTO, adjusting the inflow of the atmosphere from the atmospheric open pipe provided in the suction pipe, thereby even from the production equipment The change in exhaust air volume can also operate the RTO with an appropriate air volume.

In order to solve the above problems, the regenerative combustion type exhaust gas purification system and the operation method thereof according to the present invention are an atmospheric open pipe for mitigating a static pressure change generated when the RTO air brake is switched, and is installed in a gas discharge production facility. The exhaust fan and the regenerative combustion type exhaust gas purifying device RTO are connected to the suction pipe by a blower, and include a differential pressure transmitter that controls the air brake or the suction fan reverser, thereby allowing static pressure of the atmospheric open pipe. Adjusted to a certain level, and can mitigate the impact of static pressure changes caused by RTO inlet or outlet dampers on production equipment, and no exhaust gas is discharged to the atmosphere and attracts dilution air from the atmosphere, and can be used for production equipment. The amount of exhaust air that will change will cause the RTO to operate with appropriate air volume.

According to the present invention, the atmospheric open pipe is provided in a suction pipe that connects the exhaust air blower connected to the gas discharge production facility and the heat storage combustion type exhaust gas purification device RTO with a blower, and has a control control air lock or suction. The differential pressure transmitter of the blower reverser can adjust the static pressure of the open air tube to a certain level, and can alleviate the influence of static pressure fluctuation caused by the RTO inlet or outlet air brake on the production equipment, and has no exhaust gas. It is also less likely to be discharged to the atmosphere and to draw dilution air from the atmosphere, and the RTO can be operated with an appropriate suction air volume for the variable exhaust air volume from the production equipment.

The present application is based on Japanese Patent Application No. 2009-218251, filed on Sep. 22, 2009, the content of which is hereby incorporated herein.

Further, the present invention can be further fully understood by the following detailed description. However, the detailed description and specific examples are merely illustrative of the preferred embodiments of the invention The field to which the invention pertains is well known to those skilled in the art, and various changes or modifications can be made herein.

The applicant does not intend to contribute any of the stated embodiments to the public. The disclosed changes and alternatives may not be included in the scope of the patent application, but it is still the invention of the equalization theory. Part of it.

In the description of the specification or the scope of the patent application, the use of the noun and the same referent should be construed as including the singular and plural, unless otherwise specified. The use of any exemplification or exemplification of the present invention (such as "the", etc.) is used for the purpose of making the description easy to understand, and the scope of the present invention is not to be construed as being limit.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the same reference numerals are used for the same or similar elements, and the repeated description is omitted. In the case where the RTO of the embodiment of the present invention and the suction pipe device for supplying the exhaust gas to the RTO from the production equipment are sucked from two or more places as shown in Fig. 1, the exhaust gas is used for the exhaust of each of the production facilities A1 and A2. The secondary exhaust side of the blowers 1, 21 is provided with atmospheric open pipes 2, 22 which are normally open to the atmosphere. Further, the air locks 5, 25 (opening adjustable dampers) are provided between the atmosphere open pipes 2, 22 and the RTO blower 4 in accordance with the exhaust lines from the respective devices.

In the case of the maximum exhaust air volume from the production equipment A1, A2, the control air locks 5, 25 are fully opened to adjust the overall suction air volume, thereby minimizing the pressure loss of the suction pipe. Further, the differential pressure transmitters 3, 23 are used to measure the static pressure of the atmospheric open tubes 2, 22 of each line, and the control air locks 5, 25 are automatically adjusted to have a static pressure value of -0.05 to ±0.00 with respect to the exhaust gas. kPa (set value).

By the above, the influence of the static pressure fluctuation caused by the RTO air brake on the production equipment can be alleviated.

In order to eliminate leakage and attraction from the open tubes 2, 22, the suction tube is adjusted to a negative pressure. Thereby, the exhaust gas can be prevented from being released to the atmosphere. When the suction pipe is controlled to a negative pressure, since the external gas is introduced from the open portion of the atmosphere, although the concentration of the exhaust gas is lowered, the influence is only slight, and the dilution is slightly compared with the problem that the exhaust gas is released to the atmosphere. It is within the allowable range.

Further, in the configuration of the other embodiment of the present invention, as shown in Fig. 2, when suction is performed from the production facility A, the secondary exhaust side of the exhaust fan 1 is always placed at the atmosphere. Open atmosphere open tube 2.

The frequency of the RTO blower 4 is automatically adjusted by the inverter 6 to a static pressure value of -0.05 to ±0.00 kPa (set value) with respect to the air volume of the exhaust gas from the production equipment A. Thereby, the same control as that of the embodiment illustrated in Fig. 1 can be performed without controlling the air lock.

Next, an exhaust gas supply and discharge device that connects the suction pipe device to the RTO and discharges the treated exhaust gas from the RTO will be described. RTO having a plurality of regenerators for burning exhaust gas containing flammable harmful components such as volatile organic compounds, on the exhaust gas supply side of RTO (input to RTO) and the discharge side from RTO (from RTO outlet) The exhaust gas supply and discharge device having a plurality of regulated air locks is separately provided, and the exhaust gas is supplied and discharged by opening and closing the adjustable air lock.

However, in the conventional exhaust gas supply and discharge device of the above configuration, the two types of the damper type on the supply side and the damper type on the discharge side are simultaneously "opened" (although only for a moment), accompanied by This reduces the pressure loss caused by the RTO and increases the amount of exhaust gas supplied to the RTO. As a result, the regenerative combustion type exhaust gas purification system (including the RTO, the exhaust gas supply to the RTO, and the exhaust gas discharge pipe from the RTO) may be used. ) Static pressure changes occur. This static pressure change may have an impact on the production equipment.

Therefore, as shown in FIG. 3, the exhaust gas return means 33 is provided in the supply and discharge means 32. The supply and discharge means 32 intermittently opens and closes a plurality of adjustable air locks 37, 38, 39, 40 provided on the exhaust gas supply side and the discharge side of the RTO, respectively, to supply and discharge the exhaust gas to the RTO. The exhaust gas returning means 33 adjusts from the discharge side by reducing the pressure loss caused by the RTO by causing at least two of the plurality of adjustable air brakes 37, 38, 39, 40 to open at substantially the same time. A part of the treated exhaust gas discharged from the air brakes 39, 40 is sent to the suction side of the RTO blower 4 disposed on the exhaust gas supply side of the RTO.

Next, in the exhaust gas supply and discharge means 32, the suction port of the RTO blower 4 is connected to the front end of the suction pipe 34 that communicates with the exhaust gas generating devices A1, A2 (see Fig. 1), and the RTO blower 4 One end of the untreated exhaust gas supply pipe 36 is connected to the discharge port. The other end of the untreated exhaust gas supply pipe 36 is respectively connected to the exhaust gas supply port of the RTO via two regulating air locks 37, 38, and the treated exhaust gas discharge port of the RTO is passed through two adjustable air locks 39, 40 and processed. An exhaust pipe 42 is connected to the exhaust gas exhaust pipe 41. Further, the pressure transmitter 43 is attached to the suction pipe 34, and the orifice flowmeter 51 including the differential pressure transmitter 44 is attached to the untreated exhaust gas supply pipe 36, and the reverser of the motor 45 attached to the RTO blower 4 is attached. 46. The pressure transmitter 43 and the differential pressure transmitter 44 are electrically connected to each other via a controller 47.

Further, in the exhaust gas returning means 33, a pipe 49 to which the flow rate adjusting damper 48 is attached is connected between the suction pipe 34 and the treated exhaust gas exhaust pipe 41, and the positioner 50 of the flow rate adjusting damper 48 is electrically connected to the controller. 47.

In the apparatus configured as described above, the untreated exhaust gas is induced to the suction pipe 34, and is pressurized by the RTO blower 4 to be sent to the untreated exhaust gas supply pipe 36, so that the plurality of regulated air brakes 37 to 40 are interlocked to open and close. For the RTO, the exhaust gas supply and discharge are scheduled. Next, the opening of the flow rate adjusting damper 48 is adjusted by the controller 47 based on the pressure in the suction pipe 34 measured by the pressure transmitter 43 and the differential pressure of the orifice flow meter 51 measured by the differential pressure transmitter 44.

As described above, in the process of treating the exhaust gas, at least two of the regulated air brakes of the adjustable air brakes 37 to 40 are simultaneously "opened", and the pressure loss caused by the RTO is lowered to be supplied to the RTO. When the amount of exhaust gas is about to increase, the flow rate adjustment damper 48 is controlled by the controller 47 according to the measurement results of the pressure transmitter 43 and the differential pressure transmitter 44, so that the exhausted exhaust gas discharged from the damper dampers 39, 40 is passed through The tube 49 and the flow regulating damper 48 are returned to the suction tube 34. Thereby, it is possible to prevent an increase in the exhaust gas supply to the RTO due to the "on" of the damper at the same time.

Further, in the conventional RTO, after passing through the regenerator, the exhaust gas is subjected to a high-temperature combustion decomposition treatment in a combustion chamber which is maintained at a temperature required for the component to be decomposed (a temperature higher than a target component ignition temperature by 200 to 300 ° C). At this time, when the concentration of the target component in the exhaust gas becomes high, the component itself exerts the effect of the fuel, and as a result of combustion in the combustion chamber or the regenerator, the inside of the combustion chamber becomes a temperature equal to or higher than the above-described holding temperature. Therefore, there is a fear that the amount of heat applied to the heat storage body in the heat recovery step of the exhaust gas (from the inlet of the apparatus to the combustion chamber) and the heat recovery step after the decomposition of the components (from the combustion chamber to the outlet of the apparatus) becomes large.

For example, in Table 1, the air volume is treated: 100 m3/min (0 ° C, 101.3 kPa), toluene concentration: 0,500, 1500, 3000, 5000 ppm (natural combustion start concentration of toluene: 500 ppm), device inlet gas temperature: 20 ° C In the case, the temperature in the combustion chamber and the temperature of the RTO outlet gas are calculated. As is clear from Table 1, the higher the toluene concentration, the more heat of combustion is generated, and the temperature in the combustion chamber and the temperature of the RTO outlet gas become higher.

When the heat storage body is exposed to an excessively high temperature, the amount of heat load applied to the heat storage body is increased as described above, and cracks or cracks of the heat storage body may occur.

Another embodiment of the RTO and the exhaust gas supply and discharge device is shown in FIG. The RTO shown in FIG. 4 is internally provided with heat storage bodies 61a, 62a, 63a, and has regenerative chambers 61, 62, 63 arranged side by side, and the upper portions of the regenerators 61, 62, 63 are connected to the common combustion chamber. 64. Further, in the heat storage chambers 61, 62, 63, the heat storage bodies 61a, 62a, 63a below the respective inlet (supply side) air locks 65, 66, 67 and the respective outlet (discharge side) air locks 68, 69, 70 are respectively Connected connections. Further, each of the inlet dampers 65, 66, 67 is in communication with the untreated exhaust gas supply pipe 36, and the respective outlet dampers 68, 69, 70 are connected in communication with the treated exhaust gas exhaust pipe 41.

Further, a fresh air introduction damper 71 is continuously connected to the upstream of the inlet damper 65 of the untreated exhaust gas supply pipe 36, and the upstream position of the inlet damper 65 in the untreated exhaust gas supply pipe 36 is compared with the foregoing combustion. Chamber 64 is connected in communication via a cold bypass damper 72. In addition, in FIG. 4, the connection position of the cold bypass damper 72 is between the connection position of the inlet damper 65 in the untreated exhaust gas supply pipe 36 and the connection position of the fresh air introduction damper 71, but The connection position of the cold bypass damper 72 is not limited thereto, and may be further upstream than the connection position of the fresh air introduction damper 71.

Here, the fresh gas in the present invention means, for example, an atmosphere in an outdoor or factory, and also includes the aforementioned atmosphere passing through a coarse dust filter or the like.

Further, the cold bypass air brake in the present invention means an air lock for directly introducing the exhaust gas into the combustion chamber without passing through the regenerator. In addition, any of the air locks shown in FIG. 4 may also be an adjustable air lock.

Further, a position downstream of the outlet damper 70 in the exhaust gas exhaust pipe 41 is connected to the combustion chamber 64 via a heat bypass damper 73. Further, in the combustion chamber 64, a burner 74 which is used as a temperature holding means in the combustion chamber for holding the indoor temperature of the combustion chamber 64 is provided.

The heat bypass damper in the present invention refers to an air damper for discharging the treated exhaust gas which has been burned and decomposed from the combustion chamber, and not storing heat in the heat storage body to discard the remaining heat.

The operation of the regenerative combustion type exhaust gas purifying system constructed as described above will be described. First, the indoor temperature of the combustion chamber 64 is maintained at a temperature required for the decomposition target component by the burner 74 (a temperature higher than the ignition temperature of the target component by 200 to 300 ° C), and fresh air is first introduced into the air lock 71 and cooled. Both the bypass damper 72 and the hot bypass damper 73 are in a closed state.

In this state, the exhaust gas containing components such as volatile organic compounds supplied from the untreated exhaust gas supply pipe 36 is "opening of the inlet damper 65, opening of the outlet damper 69, other inlet dampers 66, 67 and the outlet damper. In the state where 68, 70 is closed, the inlet air lock 65 is introduced into the regenerator 61, and when it passes through the regenerator 61, it is preheated and burned and decomposed in the combustion chamber 64. Then, the exhaust gas purified by the combustion decomposition is subjected to heat exchange while passing through the heat storage body 62a of the regenerator 62, and then discharged from the treated exhaust gas exhaust pipe 41 through the outlet damper 69.

Next, after a predetermined period of time, the state is switched to "the inlet damper 66 is opened, the outlet damper 70 is opened, the other inlet dampers 65, 67, and the outlet damper 68, 69 are closed". In this state, the exhaust gas passes through the inlet damper 66 and the outlet damper 70, and is discharged after the same treatment as described above.

Further, after a predetermined period of time, the state is switched to "the inlet damper 67 is opened, the outlet damper 68 is opened, the other inlet dampers 65, 66, and the outlet damper 69, 70 are closed". In this state, the exhaust gas passes through the inlet damper 67 and the outlet damper 68, and is discharged after the same treatment as described above. Next, after a predetermined period of time, the state is switched to the state of "the inlet damper 65 is opened, the outlet damper 69 is opened, the other inlet dampers 66, 67, and the outlet damper 68, 70 are closed", and the above operation is repeated.

Further, in the above-described operation, when the concentration of the component in the exhaust gas or the temperature rise of the target component is high, it is predicted that the temperature in the combustion chamber 64 becomes higher than the holding temperature (200 to 300 higher than the ignition temperature of the target component). The temperature of °C is high. In this case, in the operation of the apparatus, the aforementioned burner 74 is first stopped. Next, the hot bypass damper 73 is turned on, a part of the purified exhaust gas is discharged from the combustion chamber 64, and the remaining heat is discarded without accumulating heat in the heat storage bodies 61a, 62a, 63a, and the fresh air is introduced into the air lock. 71. The concentration of the components in the supplied exhaust gas is diluted with fresh gas so that the temperature in the combustion chamber 64 does not rise. Usually, the amount of heat applied to the heat storage bodies 61a, 62a, 63a is reduced in the above manner.

However, when the concentration of the component in the exhaust gas or the temperature rise of the target component is extremely high, sometimes the burner 74 is stopped as described above, the hot bypass damper 73 and the fresh air introduction damper 71 are turned on, and the combustion chamber 64 The temperature inside also exceeds the heat-resistant temperature of the heat storage bodies 61a, 62a, 63a. In this case, in the state in which the burner 74 is stopped during the operation of the apparatus, the cold bypass damper 72 is opened, so that a part of the exhaust gas is directly introduced into the combustion chamber 64 without being passed through the regenerators 61, 62, 63 for combustion decomposition. The hot bypass damper 73 is turned on, and a portion of the purified exhaust gas is exhausted from the combustion chamber 64 to discard the remaining heat. As described above, by reducing the combustion of the exhaust gas in the regenerators 61, 62, 63 and reducing the heat exchange of the purified exhaust gas in the regenerators 61, 62, 63, it is possible to more reduce the application to the regenerators 61a, 62a, 63a. The heat load.

Furthermore, the fresh air introduction damper 71 is in principle closed. It is to avoid a reduction in the amount of exhaust gas treatment. However, when it is necessary to lower the temperature in the combustion chamber 64 more preferably, the fresh air introduction damper 71 may be turned on, and the concentration of the components in the supplied exhaust gas may be diluted with fresh gas. Further, the direct introduction of the exhaust gas to the combustion chamber 64 may be a part of the exhaust gas and may be the total amount of the exhaust gas. In this case, the inlet dampers 65, 66, 67 are all closed.

Further, in the embodiment of the present invention, a part of the purified exhaust gas is discharged from the combustion chamber 64 by the opening of the hot bypass damper 73, but it may not be a part of the purified exhaust gas. . In this case, the outlet dampers 68, 69, 70 are all closed.

1,21. . . Exhaust blower

2,22. . . Atmospheric open tube

3,23. . . Differential pressure transmitter

4. . . RTO blower

5,25. . . Control air lock

6. . . Inverter

32. . . Supply and discharge means

33. . . Exhaust gas regression

34. . . Suction tube

36. . . Untreated exhaust gas supply pipe

37,38,39,40. . . Adjustable air lock

41. . . Exhaust exhaust pipe

42. . . exhaust pipe

43. . . Pressure transmitter

44. . . Differential pressure transmitter

45. . . electric motor

46. . . Inverter

47. . . Controller

48. . . Flow regulation air lock

49. . . tube

50. . . Locator

51. . . Orifice flowmeter

61,62,63. . . Regenerator

61a, 62a, 63a. . . Heat accumulator

64. . . Combustion chamber

65,66,67. . . Air brake

68,69,70. . . Export air lock

71. . . Fresh air introduction air lock

72. . . Cold bypass air lock

73. . . Thermal bypass air brake

74. . . burner

A, A1, A2. . . Production equipment

B. . . RTO

Fig. 1 is a block diagram showing a case where the attraction line of the regenerative combustion type exhaust gas purification system of the present invention is two or more.

Fig. 2 is a block diagram showing the attraction line of the regenerative combustion type exhaust gas purifying system of the present invention in one place.

Figure 3 is a block diagram showing the RTO of the present invention and an exhaust gas supply and discharge device.

Fig. 4 is a schematic block diagram showing an exhaust gas treating apparatus of an embodiment of the RTO and the exhaust gas supply and discharge device of the present invention.

Fig. 5 is a block diagram (1) of a conventional heat storage combustion type exhaust gas purification system having an open air damper.

Fig. 6 is a block diagram (2) of a conventional heat storage combustion type exhaust gas purification system having an open air damper.

1,21. . . Exhaust blower

2,22. . . Atmospheric open tube

3,23. . . Differential pressure transmitter

4. . . RTO blower

5,25. . . Control air lock

A1, A2. . . Production equipment

B. . . RTO

Claims (7)

A regenerative combustion type exhaust gas purifying system comprising: a regenerative combustion type exhaust gas purifying device for purifying exhaust gas generated by a production device for exhausting gas; and a suction pipe device for communicating the regenerative combustion type exhaust gas purifying device and the gas exhausting production device The air blower for exhaust gas is connected to a gas discharge production facility for sucking exhaust gas from the gas discharge production facility; and the blower for the heat storage combustion type exhaust gas purification device is an exhaust gas that is sucked by the exhaust air blower. And a suction pipe for connecting the exhaust fan and the regenerative combustion type exhaust gas purifying device; the atmospheric open pipe is provided in the suction pipe; and the differential pressure transmitter is The static pressure in the open atmosphere tube is measured to transmit a signal for adjusting a control damper provided in the suction pipe or an operation reverser of the blower for the heat storage combustion type exhaust gas purification device. The regenerative combustion type exhaust gas purification system of claim 1, further comprising: an exhaust gas supply and discharge device that communicates with the suction pipe device and the regenerative combustion type exhaust gas purification device by interlocking a plurality of regulated air brakes Opening and closing to supply and discharge the exhaust gas to the regenerative combustion type exhaust gas purifying device; and providing an exhaust gas regressing means for at least two of a plurality of regulating air locks provided on the supply side and the discharge side of the exhaust gas The above-mentioned damper is opened at substantially the same time, and when the pressure loss is reduced by the regenerative combustion type exhaust gas purifying device, a part of the treated exhaust gas discharged from the regulating damper on the discharge side is sent to the regenerative combustion type exhaust gas purification. The suction side of the blower for the device. The regenerative combustion type exhaust gas purification system according to the first aspect of the invention, wherein the regenerative combustion type exhaust gas purifying device has a plurality of regenerators in which a regenerator is disposed in parallel, and each of the regenerative combustion chambers stores heat storage The upper portion of the chamber is connected to each other, and further includes: an untreated exhaust gas supply pipe that supplies the exhaust gas to the heat storage combustion type exhaust gas purification device from the suction pipe device, and is disposed in the untreated exhaust gas supply pipe and the heat storage combustion type exhaust gas purification device a plurality of inlet dampers, a treated exhaust gas exhaust pipe for discharging the treated exhaust gas from the regenerative combustion type exhaust gas purifying device, and an exhaust gas exhaust pipe disposed between the treated exhaust gas exhaust pipe and the regenerative combustion type exhaust gas purifying device a plurality of outlet dampers; connecting the lower side of the regenerators in each regenerator to each of the inlet dampers and the outlet dampers, respectively connecting the inlet dampers to the untreated exhaust gas supply pipes, and connecting the outlet gases The gate is connected to the exhaust pipe of the treated exhaust gas, and is connected to the upstream position of the inlet damper in the untreated exhaust gas supply pipe The fresh gas is introduced into the air lock, and the downstream position of the aforementioned outlet air lock in the exhaust gas exhaust pipe is connected to the combustion chamber via the heat bypass air brake. The regenerative combustion type exhaust gas purification system according to the first aspect of the invention, wherein the regenerative combustion type exhaust gas purifying device has a plurality of regenerators in which a regenerator is disposed in parallel, and each of the regenerative combustion chambers stores heat storage The upper portion of the chamber is connected to each other, and further includes: an untreated exhaust gas supply pipe that supplies the exhaust gas to the heat storage combustion type exhaust gas purification device from the suction pipe device, and is disposed in the untreated exhaust gas supply pipe and the heat storage combustion type exhaust gas purification device a plurality of inlet dampers, a treated exhaust gas exhaust pipe for discharging the treated exhaust gas from the regenerative combustion type exhaust gas purifying device, and an exhaust gas exhaust pipe disposed between the treated exhaust gas exhaust pipe and the regenerative combustion type exhaust gas purifying device a plurality of outlet dampers; connecting the lower side of the regenerators in each regenerator to each of the inlet dampers and the outlet dampers, respectively connecting the inlet dampers to the untreated exhaust gas supply pipes, and connecting the outlet gases a gate connected to the treated exhaust gas exhaust pipe, and an upstream position of the inlet damper in the untreated exhaust gas supply pipe and the foregoing The combustion chamber is connected in communication via a cold bypass damper, and a downstream position of the aforementioned outlet damper in the aforementioned treated exhaust gas exhaust pipe is connected to the aforementioned combustion chamber via a thermal bypass damper. The regenerative combustion type exhaust gas purification system according to the first aspect of the invention, wherein the regenerative combustion type exhaust gas purifying device has a plurality of regenerators in which a regenerator is disposed in parallel, and each of the regenerative combustion chambers stores heat storage The upper portion of the chamber is connected to each other, and further includes: an untreated exhaust gas supply pipe that supplies the exhaust gas to the heat storage combustion type exhaust gas purification device from the suction pipe device, and is disposed in the untreated exhaust gas supply pipe and the heat storage combustion type exhaust gas purification device a plurality of inlet dampers, a treated exhaust gas exhaust pipe for discharging the treated exhaust gas from the regenerative combustion type exhaust gas purifying device, and an exhaust gas exhaust pipe disposed between the treated exhaust gas exhaust pipe and the regenerative combustion type exhaust gas purifying device a plurality of outlet dampers; connecting the lower side of the regenerators in each regenerator to each of the inlet dampers and the outlet dampers, respectively connecting the inlet dampers to the untreated exhaust gas supply pipes, and connecting the outlet gases The gate is connected to the exhaust pipe of the treated exhaust gas, and is connected to the upstream position of the inlet damper in the untreated exhaust gas supply pipe Introducing fresh gas into the air lock, and connecting the upstream position of the inlet air lock in the untreated exhaust gas supply pipe to the combustion chamber via a cold bypass air brake, and the foregoing outlet gas in the treated exhaust gas exhaust pipe The downstream position of the gate is connected to the aforementioned combustion chamber via a thermal bypass air brake. An operation method of a regenerative combustion type exhaust gas purifying system for sending an appropriate air volume to a regenerative combustion type exhaust gas purifying device for an exhaust gas flow rate from a production device in which a gas discharge amount is varied, and characterized The method is characterized in that the opening of the control air lock or the operation of the blower for the heat storage combustion type exhaust gas purifying device is adjusted according to the static pressure of the open air pipe provided in the suction pipe connecting the production equipment and the heat storage combustion type exhaust gas purification device. The operation of the device is such that the aforementioned static pressure is constant. The method of operating a regenerative combustion type exhaust gas purifying system according to claim 6, wherein at least two of the plurality of regulating air locks respectively provided on the exhaust gas supply side and the discharge side of the regenerative combustion type exhaust gas purifying device are provided. More than one of the regulated air locks is opened at substantially the same time, and when the pressure loss is reduced by the heat storage combustion type exhaust gas purifying device, a part of the treated exhaust gas discharged from the discharge side regulating air brake is sent to the heat storage combustion type exhaust gas. The suction side of the blower for the regenerative combustion type exhaust gas purifying device disposed on the exhaust gas supply side of the purification device.