JP6377871B1 - Diagnostic system for exhaust gas treatment equipment - Google Patents

Abstract

Disclosed is a diagnosis system for an exhaust gas treatment apparatus that can diagnose a device in real time and avoid waste of fuel and device trouble in advance. A combustion chamber 22 having a combustion means 21 for processing organic components contained in exhaust gas, and heat of the treated gas combusted in the combustion chamber 22 are stored, and the stored heat is supplied to the combustion chamber 22. The heat storage chamber 23 in which the heat storage body 26 that preheats the exhaust gas to be stored is accommodated, the discharge line 51 from which the processed gas is discharged from the heat storage chamber 23, and the processed gas is discharged from the combustion chamber 22 by bypassing the heat storage chamber 23 In the exhaust gas treatment device 2, the data is acquired from the exhaust gas treatment device 2. The exhaust gas treatment device 2 includes a bypass line 52, a bypass valve 53 that opens and closes the bypass line 52, and a merge line 54 that joins the discharge line 51 and the bypass line 52. Data acquisition unit 92, diagnosis unit 93 that performs diagnosis from data acquired by data acquisition unit 92, and display unit that displays the results of diagnosis performed by diagnosis unit 93 It includes a 4, a. [Selection] Figure 1

Description

  The present invention relates to a diagnostic system for diagnosing an exhaust gas processing apparatus that processes organic components contained in exhaust gas.

  Exhaust gas containing organic components (hereinafter referred to as “VOC”) discharged from paint factories, etc. is heated by an exhaust gas treatment device such as a regenerative thermal odorizer (hereinafter referred to as “RTO”). Decomposed. In RTO, as shown in Patent Document 1, it is necessary to periodically clean, and as shown in Patent Document 2, energy saving measures such as stopping combustion of the burner during standby and keeping the combustion chamber warm. Has been tried.

JP-A-2006-194390 JP 2006-205712 A

  Here, it is necessary for the user to voluntarily adjust the process and operating state for energy saving measures and equipment replacement of the exhaust gas treatment device. Diagnosis is made from predetermined data of the exhaust gas treatment device, and the exhaust gas treatment device It is required to improve the energy utilization efficiency of

  Accordingly, the present invention provides a diagnostic system for an exhaust gas treatment device that can diagnose the device in real time by acquiring data from the exhaust gas treatment device and diagnosing it, and can avoid waste of fuel and trouble in advance. With the goal.

One aspect of the present invention is a combustion chamber provided with combustion means for processing organic components contained in exhaust gas;
A heat storage chamber in which a heat storage body that stores heat of the treated gas that has been subjected to combustion processing in the combustion chamber and that preheats exhaust gas supplied to the combustion chamber with the stored heat is housed;
A discharge line through which the treated gas is discharged from the heat storage chamber;
A bypass line through which the treated gas is discharged from the combustion chamber by bypassing the heat storage chamber;
A bypass valve for opening and closing the bypass line;
In an exhaust gas treatment apparatus comprising a merge line that merges the discharge line and the bypass line,
A data acquisition unit for acquiring data from the exhaust gas treatment device;
A diagnosis unit for performing diagnosis from the data acquired by the data acquisition unit;
A display unit that displays a result of the diagnosis performed by the diagnosis unit.

  According to the above configuration, the data acquisition unit from which the diagnostic system acquires data from the exhaust gas treatment device, the diagnosis unit that performs diagnosis from the data acquired by the data acquisition unit, and the display unit that displays the diagnosis result performed by the diagnosis unit, By providing the device, the device can be diagnosed in real time, and fuel waste and device troubles can be avoided in advance.

  The present invention preferably further comprises the following configuration.

(1) The data acquisition unit acquires a time during which the bypass valve is open,
The diagnosis unit diagnoses that exhaust heat can be further used when the time during which the bypass valve is opened is longer than a predetermined time,
The display unit displays that exhaust heat can be further used.

(2) The data acquisition unit acquires a time during which the combustion means performs the combustion process,
The diagnostic unit diagnoses that exhaust heat can be further used when the combustion processing time of the combustion means is longer than a predetermined time,
The display unit displays that exhaust heat can be further used.

(3) The data acquisition unit acquires an exhaust temperature of the exhaust line and an exhaust temperature of the merge line,
When the bypass valve is closed and the exhaust temperature of the merge line is higher than the exhaust temperature of the exhaust line, the diagnosis unit diagnoses that the bypass valve has a leak (leak),
The display unit displays that a leak has occurred in the bypass valve.

(4) It has a contact means for contacting the content displayed by the display unit to the user of the exhaust gas treatment apparatus.

(5) It has a printing device,
The printing apparatus prints the contents displayed on the display unit on a document.

  According to the said structure (1), the energy saving room of an exhaust gas processing apparatus can be judged. In addition, when there is room for energy saving in the exhaust gas treatment apparatus, it is conceivable to heat air or water with a heat exchanger or a boiler.

  According to the said structure (2), the energy saving room of an exhaust gas processing apparatus can be judged. In addition, when there is room for energy saving in the exhaust gas treatment apparatus, it is conceivable to increase the capacity of the heat storage body and raise the exhaust gas preheating temperature.

  According to the said structure (3), the trouble of the bypass valve which is an apparatus of an exhaust gas processing apparatus can be avoided in advance. As a countermeasure, it is conceivable to replace the bypass valve.

  According to the configuration (4), the user can determine the room for energy saving of the exhaust gas treatment device in real time. In addition, when there is room for energy saving in the exhaust gas treatment apparatus, it is conceivable to heat air or water with a heat exchanger or a boiler.

  According to the configuration (5), a document on which the content displayed on the display unit is printed can be obtained, and the displayed content can be freely carried or mailed.

  Another aspect of the present invention is a medical certificate printed by a diagnostic system having the configuration (5).

  According to the another aspect, the content displayed on the display unit, that is, the diagnostic result of the diagnostic system can be clearly indicated to the user as a medical certificate.

  According to the present invention, it is possible to provide a diagnostic system for an exhaust gas treatment apparatus that can diagnose a device in real time and can avoid waste of fuel and trouble in advance.

1 is a schematic view of an exhaust gas treatment system according to an embodiment of the present invention.

  FIG. 1 is a schematic diagram of an exhaust gas treatment system according to an embodiment of the present invention. As shown in FIG. 1, the exhaust gas treatment system 90 includes an exhaust gas treatment device 2 that treats organic components contained in the exhaust gas, and a diagnostic system 91 that diagnoses the exhaust gas treatment device 2.

  The exhaust gas treatment device 2 is an RTO, and includes a combustion chamber 22 having a combustion means 21 such as a burner, at least two (two in FIG. 1) heat storage chambers 23 having one end communicating with the combustion chamber 22, and a heat storage chamber. And a switching device 24 such as an electric valve for alternately supplying exhaust gas to one of the heat storage chambers 23 and discharging the treated gas from the other heat storage chambers 23. ing.

  In the oven 81 that dries the treatment material 82 such as a steel strip immediately after passing through the painting process, the exhaust gas generated by evaporation passes through the supply line 41, passes from the supply fan 25 through the switching device 24, and enters the heat storage chamber 23. Supplied to one. The exhaust gas is heated by exchanging heat with the heat storage body 26 of the heat storage chamber 23 and reaches the combustion chamber 22.

  The supply line 41 is provided with an air release valve 42 that releases the exhaust gas from the supply line 41 to the outside, an open / close valve 43 that opens and closes the supply line 41, and a supply valve 44 that supplies outside air (air) to the supply line 41. . The air release valve 42 is opened when the exhaust gas from the supply line 41 is not sent to the exhaust gas treatment device 2 and is discharged to the outside. The supply valve 44 supplies air to the exhaust gas treatment device 2 when the exhaust gas is not supplied from the oven 81 to warm up the exhaust gas treatment device 2 or to dilute the exhaust gas when the concentration of the exhaust gas is too high. To be released.

  The exhaust gas sent to the combustion chamber 22 is combusted by the combustion means 21. Specifically, VOC in the exhaust gas is detoxified by a combustion reaction. The treated gas that has been subjected to the combustion process passes through another heat storage chamber 23, and is cooled by exchanging heat with the heat storage body 26 in the heat storage chamber 23, and is sent to the discharge line 51 via the switching device 24.

  Further, the combustion chamber 22 communicates with a bypass line 52 that bypasses the heat storage chamber 23 from the combustion chamber 22 and discharges the processed gas, and the bypass line 52 includes a bypass valve that opens and closes the bypass line 52. 53 is provided. A junction line 54 that joins the discharge line 51 and the bypass line 52 is provided on the downstream side of the bypass valve 53.

  The treated gas in the merging line 54 is discharged from the exhaust pipe 61 to the outside. Further, the air supplied from the supply fan 55 is preheated by the heat exchanger 57 by the high-temperature exhaust gas in the merging line 54, supplied to the gas burner 83 such as a radiant tube burner via the supply line 56, and the processing material 82. It can also be used for heating.

  The diagnosis system 91 includes a data acquisition unit 92 that acquires data from the exhaust gas treatment device 2, a diagnosis unit 93 that performs diagnosis from data acquired by the data acquisition unit 92, and a display unit that displays the results of diagnosis performed by the diagnosis unit 93. 94. The display unit 94 is not limited to the one displayed on the screen, and includes one that prints on a document or the like. The display unit 94 is configured to perform electrical communication with the exhaust gas treatment device 2 and may be provided at a location remote from the exhaust gas treatment device 2.

  The diagnosis system 91 further includes a communication unit 95 that communicates the content displayed by the display unit 94 to the user of the exhaust gas treatment device 2. In addition to the content displayed on the display unit 94, the contact means 95 can arrange the content displayed on the display unit 94 into a form such as a medical certificate or a proposal, and notify the user. The contact means may electronically send the contents displayed on the display unit 94 to the user's personal computer. Further, the content displayed on the display unit 94 may be written on a document such as a “diagnosis” or “suggestion” using the printing device 96.

  The data acquisition unit 92 acquires various data of the exhaust gas treatment device 2. The acquired data includes, for example, the time when the bypass valve 53 is opened (S1), the time when the combustion means 21 performs the combustion process (S2), the flow rate (Q1) of the exhaust gas supplied to the combustion chamber 22, and the combustion Examples include the temperature (T1) of the chamber 22, the exhaust temperature (T2) of the discharge line 51, and the exhaust temperature (T3) of the merge line 54.

  The diagnosis unit 93 calculates the amount of heat that can be recovered from the exhaust gas treatment device 2 from the data acquired by the data acquisition unit 92. The display unit 94 displays the recoverable heat amount calculated by the diagnosis unit 93.

  When the data acquisition unit 92 acquires the time (S1) when the bypass valve 53 is opened, the diagnosis unit 93 diagnoses that exhaust heat can be further used when the S1 is longer than the predetermined time, and displays the display unit. 94 indicates that exhaust heat can be further utilized.

  When the data acquisition unit 92 acquires the time (S2) during which the combustion means 21 performs the combustion process, the diagnosis unit 93 diagnoses and displays that exhaust heat can be further used when S2 is longer than the predetermined time. The unit 94 displays that exhaust heat can be further used.

  When the data acquisition unit 92 acquires the exhaust temperature (T2) of the discharge line 51 and the exhaust temperature (T3) of the merge line 54, the diagnosis unit 93 determines that T3 is higher than T2 when the bypass valve 53 is closed. In such a case, the bypass valve 53 is diagnosed as leaking, and the display unit 94 displays that the bypass valve 53 is leaking.

  In addition, the data acquisition unit 92 has a flow rate (Q1) of exhaust gas supplied to the combustion chamber 22, the temperature (T1) of the combustion chamber 22, the temperature (T2) of the treated gas in the exhaust line 51, and the fuel of the combustion means 21. When acquiring the consumption (Q2), the diagnosis unit 93 calculates the necessary heat amount of the exhaust gas treatment device 2. The display unit 94 displays the necessary heat amount calculated by the diagnosis unit 93.

  When the data acquisition unit 92 acquires the leak amount (Q3) when the bypass valve 53 is closed, the diagnosis unit 93 calculates the replacement time of the bypass valve 53. The display unit 94 displays the replacement time calculated by the diagnosis unit 93.

  The diagnosis system 91 may be provided in the vicinity of the exhaust gas treatment device 2, or provided apart from the exhaust gas treatment device 2, and obtains data of the exhaust gas treatment device 2 from a remote location of the exhaust gas treatment device 2. The diagnosis may be performed and the diagnosis result may be displayed.

  According to the exhaust gas treatment system 90 configured as described above, the following effects can be exhibited.

(1) The diagnosis system 91 displays a data acquisition unit 92 that acquires data from the exhaust gas treatment device 2, a diagnosis unit 93 that performs diagnosis from data acquired by the data acquisition unit 92, and a diagnosis result that the diagnosis unit 93 performs And a display unit 94. Therefore, the apparatus can be diagnosed in real time, and fuel waste and apparatus trouble can be avoided in advance.

(2) The data acquisition unit 92 acquires the time during which the bypass valve 53 is open, and the diagnosis unit 93 further uses exhaust heat when the time during which the bypass valve 53 is open is longer than a predetermined time. Diagnosing that it is possible, the display unit 94 displays that exhaust heat can be further utilized. Therefore, the room for energy saving of the exhaust gas treatment device 2 can be determined. In addition, when there is room for energy saving in the exhaust gas treatment device 2, it is conceivable to heat the air or water with a heat exchanger or a boiler using the heat of the exhaust gas from the merge line 54.

(3) The data acquisition unit 92 acquires the time during which the combustion unit 21 performs the combustion process, and the diagnosis unit 93 uses exhaust heat when the time during which the combustion unit 21 performs the combustion process is longer than the predetermined time. The display unit 94 displays that the exhaust heat can be further used. Therefore, the room for energy saving of the exhaust gas treatment device 2 can be determined. When there is room for energy saving in the exhaust gas treatment device 2, it is conceivable to increase the capacity of the heat storage body 26 and raise the exhaust gas preheating temperature.

(4) The data acquisition unit 92 acquires the exhaust temperature of the discharge line 51 and the exhaust temperature of the merge line 54, and the diagnosis unit 93 determines that the exhaust temperature of the merge line 54 is the discharge line when the bypass valve 53 is closed. When the exhaust temperature is higher than 51, it is diagnosed that the bypass valve 53 is leaking, and the display unit 94 displays that the bypass valve 53 is leaking. Therefore, the trouble of the bypass valve 53 which is the apparatus of the exhaust gas treatment apparatus 2 can be avoided in advance. As a countermeasure, it is conceivable to replace the bypass valve.

(5) A communication means 95 is provided for communicating the contents displayed on the display unit 94 to the user of the exhaust gas treatment device 2. Therefore, the user can determine the room for energy saving of the exhaust gas treatment device 2 in real time. In addition, when there is room for energy saving in the exhaust gas treatment apparatus, it is conceivable to heat air or water with a heat exchanger or a boiler.

(6) By calculating the recoverable heat amount from the exhaust gas treatment device 2 and / or the necessary heat amount of the exhaust gas treatment device 2 from the predetermined data of the exhaust gas treatment device 2, it is possible to study the effective use of those heat amounts, Thus, the energy utilization efficiency of the exhaust gas treatment device 2 can be improved.

(7) The data acquisition unit 92 sets the flow rate (Q1) of the exhaust gas supplied to the combustion chamber 22, the temperature (T1) of the combustion chamber 22, the temperature of the treated gas in the exhaust line 51 (T2), and the merge line 54 The temperature (T3) of the treated gas is acquired, and the diagnosis unit 93 calculates the amount of heat recoverable from the exhaust gas treatment device 2 from the data acquired by the data acquisition unit 92. The installation of the waste heat boiler can be examined, and thereby the energy utilization efficiency of the exhaust gas treatment device 2 can be improved.

(8) The data acquisition unit 92 includes the flow rate (Q1) of the exhaust gas supplied to the combustion chamber 22, the temperature (T1) of the combustion chamber 22, the temperature (T2) of the treated gas in the exhaust line 51, and the combustion means 21 The fuel consumption (Q2) is acquired, and the diagnosis unit 93 calculates the necessary heat amount of the exhaust gas treatment device 2 from the data acquired by the data acquisition unit 92, so that the heat storage body 26 is further installed in the heat storage chamber 23 from the necessary heat amount. Can be considered, and thereby, the energy utilization efficiency of the exhaust gas treatment device 2 can be improved. More specifically, the amount of heat that can be stored in the treated gas can be increased by further installing the heat storage body 26, and the amount of heat stored in the heat storage body 26 is applied to the exhaust gas flowing from the supply line 41. As a result, the fuel required for the combustion means 21 in the combustion chamber 22 can be reduced.

(9) The data acquisition unit 92 acquires the leak amount (Q3) of the bypass valve 53, and the diagnosis unit 93 calculates the replacement time of the bypass valve 53 from the data acquired by the data acquisition unit 92. Here, when the leak amount of the bypass valve 53 is increased, the loss of heat is large, so that the energy efficiency of the exhaust gas treatment device 2 can be improved by replacing the bypass valve 53 having a large leak amount with a leak-free one. .

(10) Since the treated gas treated by the exhaust gas treatment device 2 is used for heating the treatment material 82 in the oven 81, the thermal efficiency of the entire exhaust gas treatment system 90 can be further improved.

  In the above embodiment, the exhaust gas treatment device 2 is a regenerative combustion deodorization device (RTO), but the exhaust gas treatment device of the present invention is not limited to the regenerative combustion deodorization device, and is a device that performs combustion treatment of exhaust gas containing organic components. I just need it.

  In the above embodiment, after the exhaust gas from the oven 81 is processed by the exhaust gas processing apparatus 2, the processed gas is used for heating the processing material 82 in the same oven 81, but may be used in different facilities or factories. .

  Various modifications and changes can be made without departing from the spirit and scope of the invention as set forth in the appended claims.

  Since the present invention can provide a diagnosis system for an exhaust gas treatment apparatus that can diagnose the apparatus in real time and avoid waste of fuel and apparatus trouble in advance, the industrial utility value is great.

2 Exhaust gas treatment equipment
21 Combustion means 22 Combustion chamber 23 Heat storage chamber 24 Switching device
25 Supply fan 26 Heat storage
41 Supply line 42 Air release valve 43 On-off valve 44 Supply valve
51 Discharge line 52 Bypass line 53 Bypass valve
54 Junction line 55 Supply fan 56 Supply line 57 Heat exchanger
61 Exhaust pipe
81 Oven 82 Treatment material 83 Gas burner
90 Exhaust gas treatment system
91 Diagnostic system
92 Data acquisition unit
93 Diagnostic Department
94 Display
95 Contact means
96 Printing means

Claims (6)

A combustion chamber provided with a combustion means for processing organic components contained in the exhaust gas;
A heat storage chamber in which a heat storage body that stores heat of the treated gas that has been subjected to combustion processing in the combustion chamber and that preheats exhaust gas supplied to the combustion chamber with the stored heat is housed;
A discharge line through which the treated gas is discharged from the heat storage chamber;
A bypass line through which the treated gas is discharged from the combustion chamber by bypassing the heat storage chamber;
A bypass valve for opening and closing the bypass line;
In an exhaust gas treatment apparatus comprising a merge line that merges the discharge line and the bypass line,
A data acquisition unit for acquiring data from the exhaust gas treatment device;
A diagnosis unit for performing diagnosis from the data acquired by the data acquisition unit;
A display unit for displaying a result of diagnosis performed by the diagnostic unit,
The data acquisition unit acquires a time when the bypass valve is open,
The diagnosis unit diagnoses that exhaust heat can be further used when the time during which the bypass valve is opened is longer than a predetermined time,
The diagnostic system for an exhaust gas treatment apparatus, characterized in that the display unit displays that exhaust heat utilization is further possible.
A combustion chamber provided with a combustion means for processing organic components contained in the exhaust gas;
A heat storage chamber in which a heat storage body that stores heat of the treated gas that has been subjected to combustion processing in the combustion chamber and that preheats exhaust gas supplied to the combustion chamber with the stored heat is housed;
A discharge line through which the treated gas is discharged from the heat storage chamber;
A bypass line through which the treated gas is discharged from the combustion chamber by bypassing the heat storage chamber;
A bypass valve for opening and closing the bypass line;
In an exhaust gas treatment apparatus comprising a merge line that merges the discharge line and the bypass line,
A data acquisition unit for acquiring data from the exhaust gas treatment device;
A diagnosis unit for performing diagnosis from the data acquired by the data acquisition unit;
A display unit for displaying a result of diagnosis performed by the diagnostic unit,
The data acquisition unit acquires the time during which the combustion means performs the combustion process,
The diagnostic unit diagnoses that exhaust heat can be further used when the combustion processing time of the combustion means is longer than a predetermined time,
The diagnostic system for an exhaust gas treatment apparatus, characterized in that the display unit displays that exhaust heat utilization is further possible.
A combustion chamber provided with a combustion means for processing organic components contained in the exhaust gas;
A heat storage chamber in which a heat storage body that stores heat of the treated gas that has been subjected to combustion processing in the combustion chamber and that preheats exhaust gas supplied to the combustion chamber with the stored heat is housed;
A discharge line through which the treated gas is discharged from the heat storage chamber;
A bypass line through which the treated gas is discharged from the combustion chamber by bypassing the heat storage chamber;
A bypass valve for opening and closing the bypass line;
In an exhaust gas treatment apparatus comprising a merge line that merges the discharge line and the bypass line,
A data acquisition unit for acquiring data from the exhaust gas treatment device;
A diagnosis unit for performing diagnosis from the data acquired by the data acquisition unit;
A display unit for displaying a result of diagnosis performed by the diagnostic unit,
The data acquisition unit acquires an exhaust temperature of the exhaust line and an exhaust temperature of the merge line,
When the bypass valve is closed and the exhaust temperature of the merge line is higher than the exhaust temperature of the exhaust line, the diagnosis unit diagnoses that the bypass valve is leaking,
The diagnostic system for an exhaust gas treatment apparatus, wherein the display unit displays that a leak has occurred in the bypass valve.
The diagnostic system according to any one of claims 1 to 3, further comprising a communication unit that communicates the content displayed by the display unit to a user of the exhaust gas treatment apparatus.
Equipped with a printing device,
The diagnostic system according to any one of claims 1 to 3, wherein the printing device prints the content displayed by the display unit on a document.
A medical certificate printed by the diagnostic system according to claim 5 .

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