JP2016083629A - Deodorization device, deodorization method and print system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a deodorization device, a deodorization method, and a print system capable of detecting leakage of exhaust air including harmful components from a portion other than a storage case of a reaction chamber, and notifying an operator of the detection result.SOLUTION: A printer system is configured so that, a deodorization device 10 comprises: a casing 30 for storing at least a reaction chamber 20 for removing harmful components included in gas, therein; a density meter 32 for detecting density of the harmful components in the casing 30; and a notification part 34 for notifying of a fact that, density of the harmful components exceed a predetermined threshold, when density of the harmful components detected by the density meter 32 exceeds the predetermined threshold.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a deodorizing device for removing harmful components contained in a gas exhausted from a drying device of a printing press, a deodorizing method using such a deodorizing device, and a printing system including such a deodorizing device and a printing press. About.

  In a printing machine such as a gravure printing machine or an offset printing machine, a drying device such as a floating dryer is used to dry a web such as paper or film on which ink has been transferred. Exhaust from such a drying apparatus contains a lot of harmful components such as organic solvents. Moreover, the content of harmful components in the exhaust tends to increase as the printing speed of the printing press increases. Exhaust gas containing such harmful components is not preferable to be released into the atmosphere as it is from the viewpoint of administrative and global environment, and is released into the atmosphere after making it odorless and harmless using a deodorizer. . As such a deodorizing apparatus, what was disclosed by patent document 1 etc. is conventionally known, for example.

  In the deodorizing apparatus disclosed in Patent Document 1, exhaust gas containing harmful components is sent to a catalyst cassette housed in a housing case of a reaction chamber, and the exhaust gas is oxidized and burned with a catalyst by passing through the catalyst cassette, and is odorless. It breaks down into harmless exhaust and then releases the treated exhaust to the atmosphere. Further, in the deodorizing apparatus disclosed in Patent Document 1, a continuous passage for collecting leaked exhaust or short-passed exhaust is formed in the entire periphery of the side surface of the storage case and the entire peripheral edge on the outlet side. Is communicated with the exhaust gas supply line from the drying device of the printing press. As a result, it is possible to prevent a short pass in which exhaust containing harmful components passes to the side of the side of the storage case, and to achieve reliable oxidative combustion with the catalyst. The untreated exhaust gas can be prevented from being released to the atmosphere as it is by reliably collecting and recirculating it to the air supply system.

JP-A-10-76140

  The exhaust duct in the deodorizer is covered with a heat insulating material from the viewpoint of thermal efficiency. However, if the duct is cracked or the gasket on the flange tightening surface is loosened due to the effect of thermal fatigue due to temperature changes between when the deodorizer is operating and when it is stopped, the exhaust containing harmful components is exhausted. There are problems such as leaking to the outside or being short-passed and released to the atmosphere without being deodorized. In particular, if an exhaust leak containing harmful components occurs in front of the reaction chamber, the tar leaks along with the exhaust, which not only contaminates the heat insulating material, but also causes a fire when the accumulated tar touches a hot part. There is a risk that. On the other hand, in the deodorizing device disclosed in Patent Document 1, as described above, continuous exhaust for collecting leaked exhaust and exhaust that has been short-passed to the entire periphery of the side surface of the storage case and the entire peripheral edge of the outlet side. A passage is formed and this passage is communicated with the exhaust supply system. However, with such a countermeasure, only a leak of exhaust gas containing harmful components from the vicinity of the storage case of the reaction chamber can be dealt with. However, there has been a problem that it is impossible to prevent exhaust leaks due to cracks in the ducts at other locations and loose gaskets on the flange fastening surfaces of the heat exchanger.

  The present invention has been made in consideration of such points, and even when exhaust gas containing harmful components leaks from a place other than the storage case of the reaction chamber in the deodorization apparatus, this is detected and notified to the operator. It is an object of the present invention to provide a deodorizing apparatus, a deodorizing method, and a printing system.

  The deodorizing apparatus of the present invention includes a casing in which a reaction chamber for removing harmful components contained in gas is housed at least, a densitometer for detecting the concentration of harmful components in the casing, and a detection by the densitometer. And a notification unit for performing a notification when the concentration of the harmful component that has been exceeded exceeds a predetermined threshold value.

  According to such a deodorizing device, the reaction chamber for removing harmful components contained in the gas detects at least the concentration of harmful components in the casing accommodated therein, and the harmful concentration detected by the concentration meter is detected. By notifying the operator when the concentration of the component exceeds a predetermined threshold, this is detected even if exhaust gas containing harmful components leaks from a location other than the storage case of the reaction chamber in the deodorizer. The operator can be notified.

  In the deodorizing apparatus of the present invention, the concentration meter may comprise a hydrocarbon concentration meter that detects a concentration of a hydrocarbon component in the casing.

  In the deodorizing apparatus of the present invention, the concentration meter may be provided on the inlet side or the outlet side of the reaction chamber.

  Or the said densitometer may be provided with two or more corresponding to each structural member in the said casing.

  In the deodorizing apparatus of the present invention, the notification unit may be configured to make an audio or visual notification by voice or display.

  In the deodorizing apparatus of the present invention, the catalyst may be brought into contact with the gas in the reaction chamber to oxidize and burn the gas to remove harmful components.

  The deodorizing method of the present invention includes a step of removing harmful components contained in a gas in a reaction chamber housed in a casing, and a harmful component detected by a densitometer for detecting the concentration of harmful components in the casing. And a step of notifying when the concentration of the liquid exceeds a predetermined threshold value.

  According to such a deodorizing method, the reaction in the deodorizing device is performed by notifying when the concentration of the harmful component detected by the densitometer for detecting the concentration of the harmful component in the casing exceeds a predetermined threshold. Even when exhaust gas containing harmful components leaks from a place other than the storage case of the room, this can be detected and notified to the operator.

  The printing system of the present invention includes a printing machine provided with a drying device for drying the web on which ink is transferred to the surface by the printing unit, and harmful gas contained in the gas exhausted from the drying device of the printing machine. A deodorizing device for removing components, the deodorizing device comprising a casing in which at least a reaction chamber for removing harmful components contained in the gas is housed, and a concentration of harmful components in the casing. It has a densitometer to detect, and an informing part for informing when the concentration of the harmful ingredient detected by the densitometer exceeds a predetermined threshold.

  According to such a printing system, in the deodorizing device, the reaction chamber for removing harmful components contained in the gas detects at least the concentration of harmful components in the casing accommodated therein, and the densitometer Even if the exhaust gas containing harmful components leaks from a place other than the storage case of the reaction chamber in the deodorizing device, by notifying the worker when the concentration of the detected harmful components exceeds a predetermined threshold value. This can be detected and notified to the operator.

  According to the deodorizing apparatus, the deodorizing method, and the printing system of the present invention, even when exhaust gas containing harmful components leaks from a place other than the storage case of the reaction chamber, this can be detected and notified to the operator.

It is a schematic block diagram which shows schematically the structure of the deodorizing apparatus by embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram schematically showing the configuration of the deodorizing apparatus according to the present embodiment.

  In a printing machine 40 such as a gravure printing machine or an offset printing machine, a drying process is performed by a drying device 42 on a web W on which ink is transferred to a surface by a printing unit (not shown). Since the gas exhausted from the drying device 42 contains many harmful components such as organic solvents, the deodorizing device 10 according to the present embodiment removes such harmful components. In the present embodiment, the printing system according to the present invention is configured by combining such a deodorizing apparatus 10 and the printing machine 40.

  As shown in FIG. 1, the deodorizing apparatus 10 according to the present embodiment includes a filter 12, an air supply fan 14, a heat exchanger 16, a gas burner 18, and a reaction chamber 20. The constituent members of the filter 12, the air supply fan 14, the heat exchanger 16, the gas burner 18, and the reaction chamber 20 are disposed inside the casing 30. These constituent members are connected to each other by a duct so as to communicate with each other. Details of each component of the deodorizing apparatus 10 will be described below.

  When the gas exhausted from the drying device 42 of the printing machine 40 is sent to the deodorizing device 10, the gas passes through the filter 12, whereby dust, dust, rust and the like contained in the gas are removed. The gas that has passed through the filter 12 is sucked by the air supply fan 14. Thereafter, when the gas is sent from the air supply fan 14 to the heat exchanger 16, the gas is heated by the residual heat of the processed gas (described later) sent from the reaction chamber 20, and further sent to the gas burner 18. The gas burner 18 is preheated to around 380 ° C. As shown in FIG. 1, combustion gas is sent to the gas burner 18 from the outside of the deodorizing device 10 in a state of being mixed with combustion air. The gas sent from 16 is preheated.

  The gas (exhaust gas containing harmful components) preheated by the heat exchanger 16 and the gas burner 18 is sent to the reaction chamber 20. Inside the reaction chamber 20 is housed a stainless steel storage case 22 in which a pretreatment agent cassette 24 and a catalyst cassette 26 are housed. First, the gas sent from the gas burner 18 to the reaction chamber 20 is pretreatment agent cassette. In 24, carbon, tar and the like are removed. Thereafter, the gas that has passed through the pretreatment agent cassette 24 comes into contact with a catalyst such as platinum existing as a catalyst mat in the catalyst cassette 26 to oxidize and burn, and decompose hydrocarbons into odorless and harmless carbon dioxide and water vapor. . The catalyst mat is made of a mat having an active metal such as palladium or platinum supported on a foam metal as a catalyst. Further, the catalyst provided in the catalyst cassette 26 is not limited to a mat-like one, and a pellet-like catalyst may be used. Thereafter, the gas processed in the reaction chamber 20 is sent to the heat exchanger 16, and as described above, the gas (exhaust gas containing harmful components) sent from the supply fan 14 to the gas burner 18 by this processed gas. ) Is preheated. Thereafter, the treated gas is released from the heat exchanger 16 to the atmosphere.

  Moreover, in the deodorizing apparatus 10 of this Embodiment, the hydrocarbon concentration meter 32a for detecting the density | concentration of the hydrocarbon component in the casing 30 as the concentration meter 32 for detecting the density | concentration of the harmful component in the casing 30. Is provided. By such a hydrocarbon concentration meter 32a, the concentration of harmful components in the casing 30 is always monitored when the deodorizing apparatus 10 is in operation. Moreover, the deodorizing apparatus 10 of this Embodiment is provided with the alarm device 34a as the alerting | reporting part 34 for alerting | reporting with respect to an operator, The hydrocarbon concentration meter 32a of the hydrocarbon component in the casing 30 is provided. When it is detected that the concentration exceeds a predetermined threshold, a detection signal is sent from the hydrocarbon concentration meter 32a to the alarm device 34a, and the alarm device 34a warns the operator by voice. Yes. Such a hydrocarbon concentration meter 32 a is preferably provided on the inlet side or the outlet side of the reaction chamber 20. In this case, when the exhaust gas containing harmful components leaks from the reaction chamber 20 or the duct connected to the reaction chamber 20 on the inlet side or the outlet side of the reaction chamber 20, the leak of the exhaust gas can be detected immediately. become able to.

  According to the deodorizing apparatus 10 of the present embodiment having the above-described configuration and the printing system including such a deodorizing apparatus 10 and the printing machine 40, the harmfulness in the casing 30 in which the reaction chamber 20 is accommodated at least inside. Since there are provided a densitometer 32 for detecting the concentration of the component, and a notification unit 34 for notifying when the concentration of the harmful component detected by the densitometer 32 exceeds a predetermined threshold, The concentration of the harmful component is detected by the densitometer 32, and when the concentration of the harmful component detected by the densitometer 32 exceeds a predetermined threshold, the notification unit 34 notifies the worker, thereby deodorizing Even when exhaust gas containing harmful components leaks from a place other than the storage case 22 of the reaction chamber 20 in the apparatus 10, this can be detected and notified to the operator. That.

  Moreover, in the deodorizing apparatus 10 of this Embodiment, as above-mentioned, the concentration meter 32 is comprised from the hydrocarbon concentration meter 32a which detects the density | concentration of the hydrocarbon component in the casing 30. As shown in FIG. In this case, when the exhaust gas containing harmful components leaks in the deodorizing apparatus 10, the leak of the exhaust gas can be detected by detecting the concentration of the hydrocarbon component contained in the exhaust gas with the hydrocarbon concentration meter 32a. It becomes like this. In the present embodiment, the concentration meter 32 is not limited to the hydrocarbon concentration meter 32a, and a concentration meter that detects harmful components other than the hydrocarbon component may be used.

  In the deodorizing apparatus 10 of the present embodiment, the concentration meter 32 is provided on the inlet side or the outlet side of the reaction chamber 20 as described above. In this case, when the exhaust gas containing harmful components leaks from the reaction chamber 20 or the duct connected to the reaction chamber 20 on the inlet side or the outlet side of the reaction chamber 20, this exhaust leak can be detected immediately. become able to. The installation position of the concentration meter 32 is not limited to the inlet side or the outlet side of the reaction chamber 20, and the concentration meter 32 may be placed at any location other than the inlet side or the outlet side of the reaction chamber 20 as long as it is inside the casing 30. Can be installed.

  Moreover, in the deodorizing apparatus 10 of the present embodiment, the concentration meter 32 is one of the constituent members in the casing 30 (for example, the filter 12, the air supply fan 14, the heat exchanger 16, the gas burner 18, and the reaction chamber 20). A plurality may be provided corresponding to all or part. In this case, it becomes possible to immediately detect from which of the plurality of constituent members installed in the casing 30 the exhaust gas containing harmful components is leaking.

  Moreover, in the deodorizing apparatus 10 of this Embodiment, as above-mentioned, the alerting | reporting part 34 is comprised from the alarm device 34a, and the alerting | reporting part 34 as the alarm device 34a is auditorily with respect to an operator with an audio | voice. Notification is performed. In addition, the alerting | reporting part 34 is not limited to the alarm device 34a, You may use the monitor etc. which visually alert | report to an operator by a display as another kind of alerting | reporting part 34, for example.

  Moreover, in the deodorizing apparatus 10 of this Embodiment, as mentioned above, the catalyst is brought into contact with the gas in the reaction chamber 20 to oxidize and burn the gas to remove harmful components. The reaction chamber 20 is not limited to such a configuration, and a configuration other than the configuration in which the catalyst is brought into contact with the gas may be used as long as it can remove harmful substances.

  The deodorizing apparatus according to the present invention, the deodorizing method using such a deodorizing apparatus, and the printing system including such a deodorizing apparatus and a printing press are not limited to those having the above-described configuration, and various modifications are made. be able to.

  For example, instead of installing the densitometer 32 in the casing 30 or in addition to installing the densitometer 32 in the casing 30, a smoke detector is installed in the casing 30, and the smoke concentration in the casing 30 is determined. You may make it detect with the said smoke detector. In addition, the notification unit 34 may be configured to perform an auditory or visual notification to the worker by voice or display when the smoke concentration detected by the smoke detector exceeds a predetermined threshold value. Good. When a smoke detector is installed in the casing 30, when the exhaust from the drying device 42 of the printing machine 40 leaks from each component or duct in the casing 30, the smoke contained in the exhaust is detected as smoke. By detecting with the vessel, even when exhaust gas containing harmful components leaks from a place other than the storage case 22 of the reaction chamber 20 in the deodorizing apparatus 10, this can be detected and notified to the operator.

DESCRIPTION OF SYMBOLS 10 Deodorizing device 12 Filter 14 Supply fan 16 Heat exchanger 18 Gas burner 20 Reaction chamber 22 Storage case 24 Pretreatment agent cassette 26 Catalyst cassette 30 Casing 32 Concentration meter 32a Hydrocarbon concentration meter 34 Notification part 34a Alarm device 40 Printing machine 42 Dryer W Web

Claims (8)

A casing in which a reaction chamber for removing harmful components contained in the gas is housed at least;
A concentration meter for detecting the concentration of harmful components in the casing;
An informing unit for informing when the concentration of harmful components detected by the densitometer exceeds a predetermined threshold;
A deodorizing device.   The deodorizing apparatus according to claim 1, wherein the concentration meter is a hydrocarbon concentration meter that detects a concentration of a hydrocarbon component in the casing.   The deodorization apparatus according to claim 1 or 2, wherein the concentration meter is provided on an inlet side or an outlet side of the reaction chamber.   The deodorizing apparatus according to claim 1 or 2, wherein a plurality of the concentration meters are provided corresponding to the respective constituent members in the casing.   The deodorization apparatus according to any one of claims 1 to 4, wherein the notification unit is configured to perform an auditory or visual notification by voice or display.   The deodorization apparatus according to any one of claims 1 to 5, wherein a harmful component is removed by oxidizing and burning the gas by bringing a catalyst into contact with the gas in the reaction chamber. Removing harmful components contained in the gas in the reaction chamber housed in the casing;
Notifying when the concentration of harmful components detected by a densitometer for detecting the concentration of harmful components in the casing exceeds a predetermined threshold;
A deodorizing method. A printing machine provided with a drying device for drying the web on which the ink has been transferred to the surface by the printing unit;
A deodorizing device for removing harmful components contained in the gas exhausted from the drying device of the printing press;
With
The deodorizing apparatus is detected by a casing in which at least a reaction chamber for removing harmful components contained in gas is housed, a concentration meter for detecting the concentration of harmful components in the casing, and the concentration meter. A printing system comprising: a notification unit for performing notification when the concentration of harmful components exceeds a predetermined threshold.

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