JP2010247018A - Solvent gas treating apparatus, method of operating the same and solvent gas generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a solvent gas treating apparatus capable of always evaluating the capacity of treating volatile organic compounds accurately and stably, a method of operating the apparatus and a solvent gas generator. <P>SOLUTION: The solvent gas treating apparatus includes a solvent gas treating apparatus body 200 treating a target gas, a solvent gas generator 100 evaporating a solvent liquid by heating to form a solvent gas and generating a diluted solvent gas formed by mixing the solvent gas with a diluting gas, a target gas supplying line supplying a target gas to the solvent gas treating apparatus body and a diluted solvent gas supplying line supplying the diluted solvent gas generated in the solvent gas generator to the solvent gas treating apparatus body. The target gas and the diluted solvent gas generated in the solvent gas generator can be supplied selectively to the solvent gas treating apparatus body, and an operation for evaluating the capacity of the solvent gas treating apparatus body of treating the solvent gas by supplying the diluted solvent gas generated in the solvent gas generator and an operation for treating the target gas by supplying the target gas can thus be carried out. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a solvent gas processing apparatus for purifying exhaust gas (gas to be processed) containing a volatile compound such as volatile organic compounds (VOC), an operating method thereof, and a processing capacity of the solvent gas processing apparatus. The present invention relates to a solvent gas generator used for evaluation.

  In recent years, odor complaints from small and medium-sized businesses and livestock industries close to the living environment have increased, and the sources of odor causing complaints tend to diversify. Among them, volatile organic compounds (solvent gases) contained in gases discharged from printing / painting plants and the like not only cause bad odor, but are also causative substances such as suspended particulate matter (SPM) and photochemical oxidants. For this reason, measures for reducing VOC emissions at individual offices are required. In 2006, the Air Pollution Control Law was amended to set emission standards for volatile organic compounds in large-scale facilities.

  As a method for deodorizing bad odors, there are methods for purifying gases generally called volatile organic compounds such as flammable hydrocarbons such as decomposition methods (combustion, catalytic decomposition, etc.), removal / separation methods (adsorption, It is roughly divided into biological deodorization methods such as cooling condensation, including recovery methods).

  In the purification treatment method and its apparatus, conventionally, the volatile organic compound component in the gas to be processed (the gas to be processed) from the generation source on the inlet side of the processing apparatus and the processing gas on the outlet side of the processing apparatus are conventionally used. The concentration of volatile organic compound components was measured with a concentration meter, and the purification treatment capacity was grasped and the overall control of the apparatus was performed.

  The following are typical examples of the processing apparatus described above. An exhaust gas treatment monitoring apparatus for removing a volatile compound contained in exhaust gas and monitoring a treatment function of a recyclable exhaust gas treatment unit in order to accurately grasp a removal state of a volatile organic compound, Concentration detecting means for detecting an inflow concentration of the volatile compound flowing into the exhaust gas treatment unit along a flow path of the processing gas and an exhaust concentration of the volatile compound discharged from the exhaust gas processing unit, and the inflow An exhaust gas treatment monitoring device, an exhaust gas treatment device comprising state detection means for detecting a reduced state of the treatment function during use of the exhaust gas treatment unit or a recovery state of the treatment function during regeneration based on the concentration and the exhaust concentration; (See, for example, Patent Document 1).

JP 2008-302348 A

  However, what is described in Patent Document 1 described above is a method in which a part of the exhaust gas (gas to be treated) containing the volatile organic compound component to be purified and the treated gas after the purification treatment are branched and switched. The concentration of the volatile organic compound component is measured with a gas sensor.

  In this case, the concentration of the volatile organic compound component in the exhaust gas to be purified (the gas to be treated) discharged from the generation source of the volatile organic compound component-containing gas such as a coating factory, a printing factory, or a chemical factory is extremely high. It is unstable, and the concentration of the volatile organic compound component always fluctuates in a very short time and does not become constant, and various volatile organic compound components may be mixed.

  In addition, when the generation source of the volatile organic compound component-containing gas is stopped and there is no generation of the volatile organic compound component-containing gas, the processing capability of the processing apparatus cannot be evaluated.

  For this reason, it is impossible to always evaluate the processing capability of the solvent gas processing apparatus accurately and stably due to the fluctuation (variation) of the concentration of the volatile organic compound component in a short time. Further, it is not possible to evaluate the processing capability of the solvent gas processing apparatus by arbitrarily changing the amount of the gas to be processed or the concentration of the volatile organic compound component in the gas to be processed to various conditions.

  The present invention solves the above-described conventional problems, and provides a solvent gas processing apparatus and a method for operating the solvent gas processing apparatus that can always accurately and stably evaluate the processing capacity of volatile organic compounds. Objective. Another object of the present invention is to provide a solvent gas generator capable of supplying a diluted solvent gas whose concentration of solvent gas can be adjusted to the solvent gas processing device for evaluating the processing capacity of the solvent gas processing device. .

  The solvent gas processing apparatus of the present invention includes a solvent gas processing apparatus main body for processing a gas to be processed containing a volatile organic compound, a solvent liquid by heating and vaporizing a solvent liquid of the volatile organic compound, and the solvent gas and A solvent gas generator that generates a diluted solvent gas mixed with a dilution gas, a gas supply line to be supplied to a solvent gas processing apparatus body of a gas to be processed containing a volatile organic compound, and a solvent gas generator. A diluted solvent gas supply line for supplying the diluted solvent gas to the main body of the solvent gas processing apparatus, and the supply of the diluted solvent gas generated by the gas to be processed and the solvent gas generating apparatus to the main body of the solvent gas processing apparatus can be selected. The operation of evaluating the solvent gas processing capacity of the main body of the solvent gas processing device by supplying the diluted solvent gas generated by the solvent gas generating device, and the processing of the gas to be processed by supplying the gas to be processed In which it made it possible to perform the operation.

  In addition, the operation method of the solvent gas processing apparatus of the present invention includes a solvent gas processing apparatus main body for processing a gas to be processed containing a volatile organic compound, and a solvent liquid by heating and vaporizing a solvent liquid of the volatile organic compound to obtain a solvent gas. A solvent gas generator for generating a diluted solvent gas mixed with the solvent gas and a diluent gas, a gas supply line for supplying a gas to be processed containing a volatile organic compound to the solvent gas processor body, and a solvent gas generator A diluted solvent gas supply line for supplying the diluted solvent gas generated by the apparatus to the solvent gas processing apparatus main body, and supplying the diluted gas generated by the gas to be processed and the solvent gas generating apparatus to the solvent gas processing apparatus main body. An operation for evaluating the processing capacity of the main body of the solvent gas processing apparatus by supplying the diluted solvent gas generated by the solvent gas generating apparatus, and the gas to be processed by supplying the gas to be processed It is possible to perform the processing operation of the above, and after supplying the diluted solvent gas from the solvent gas generator and performing the evaluation operation of the processing capacity of the solvent gas of the solvent gas processing device body, the supply of the gas to be processed The processing operation of the gas to be processed is performed.

  Furthermore, the solvent gas generator of the present invention is a solvent gas generator that supplies a solvent gas for the evaluation operation of the processing capacity of the main body of the solvent gas processing apparatus for processing a gas to be processed containing a volatile organic compound, Controlling the amount of solvent liquid supplied to the vaporizing means, the solvent liquid supplying means for the solvent liquid of the organic organic compound, the vaporizing means for heating and vaporizing the solvent liquid supplied by the solvent liquid supplying means, and generating the solvent gas. A solvent liquid supply amount control means for adjusting the amount of solvent gas generated, a dilution gas supply means for supplying a dilution gas mixed with the solvent gas, and a dilution gas supply amount control means for adjusting the supply amount of the dilution gas. The solvent gas and the dilution gas are mixed to form a dilution solvent gas, and the supply amount of the solvent liquid to the vaporizing means and / or the supply amount of the dilution gas are controlled to dissolve the solution in the dilution solvent gas. With the adjustable gas concentration, the diluted solvent gas and supplies the solvent gas treatment apparatus.

  According to the operation method of the solvent gas processing apparatus and the solvent gas processing apparatus of the present invention, it is possible to always evaluate the processing capability of the volatile organic compound accurately and stably. Further, according to the solvent gas generator of the present invention of the present invention, for the purpose of evaluating the processing capacity of the solvent gas processing device, a diluted solvent gas whose solvent gas concentration can be adjusted is supplied to the solvent gas processing device. Can do.

1 is a basic configuration diagram of a solvent gas processing apparatus according to an embodiment of the present invention. Basic configuration diagram of solvent liquid supply unit and vaporization mixing unit of solvent gas generator Configuration diagram of the vaporization mixing unit when the nozzle hole is closed (A), (b) The graph which shows the example of solvent gas supply from a solvent gas generator Basic configuration diagram showing an example of a solvent gas treatment device body Basic configuration diagram of another example of the solvent gas treatment device main body

  The first invention includes a solvent gas processing apparatus main body for processing a gas to be processed containing a volatile organic compound, a solvent liquid by heating and vaporizing a solvent liquid of the volatile organic compound, and the solvent gas and the dilution gas. Solvent gas generator for generating mixed diluted solvent gas, supply gas supply line to the main body of the solvent gas processing apparatus containing the volatile organic compound, and diluted solvent gas generated by the solvent gas generator A dilute solvent gas supply line to the main body of the solvent gas processing apparatus, and the supply of the dilute solvent gas generated by the gas to be processed and the solvent gas generating apparatus to the main body of the solvent gas processing apparatus can be selected. An evaluation operation of the solvent gas processing capacity of the main body of the solvent gas processing device by supplying the diluted solvent gas generated by the generator and a processing operation of the gas to be processed by supplying the gas to be processed are performed. It is obtained by the solvent gas treatment apparatus being characterized in that it possible to.

  As a result, there is no fluctuation (variation) in the solvent gas concentration in a short time, and furthermore, the amount of the diluted solvent gas or the solvent gas concentration in the diluted solvent gas is arbitrarily changed to various conditions to An evaluation of the processing capacity can be performed. Therefore, it is possible to always evaluate the processing ability of the volatile organic compound accurately and stably.

  A second invention is characterized in that, in the first invention, a calibration gas supply line not containing a solvent gas is provided, and the calibration operation of the solvent gas processing apparatus main body by supplying a calibration gas can be performed. This is a solvent gas processing apparatus.

  Thereby, the measurement accuracy of the solvent gas concentration meter can be improved by supplying the calibration gas. Further, once the residual solvent gas in the main body of the solvent gas processing apparatus is driven out, it is possible to grasp the processing capacity by the diluted solvent gas from the solvent gas generating apparatus with higher accuracy.

  According to a third aspect of the present invention, there is provided a solvent gas processing apparatus main body for processing a gas to be processed containing a volatile organic compound, a solvent liquid of the volatile organic compound is heated and vaporized to obtain a solvent gas, and the solvent gas and the dilution gas are mixed A solvent gas generator for generating the diluted solvent gas, a gas supply line for the gas to be processed containing the volatile organic compound to the main body of the solvent gas processing device, and a diluted solvent gas generated by the solvent gas generator. A diluted solvent gas supply line to the solvent gas processing device main body, the supply of the diluted gas generated by the gas to be processed and the solvent gas generating device to the solvent gas processing device main body can be selected, and the solvent gas generation Performing an operation for evaluating the processing capability of the solvent gas of the main body of the solvent gas processing apparatus by supplying the diluted solvent gas generated by the apparatus, and a processing operation for the gas to be processed by supplying the gas to be processed In addition, after supplying the diluted solvent gas from the solvent gas generator and performing an operation for evaluating the solvent gas processing capacity of the main body of the solvent gas processing apparatus, the process gas is processed by supplying the gas to be processed. The operation method of the solvent gas processing apparatus is characterized by being performed.

  As a result, there is no fluctuation (variation) in the solvent gas concentration in a short time, and furthermore, the amount of the diluted solvent gas or the solvent gas concentration in the diluted solvent gas is arbitrarily changed to various conditions to An evaluation of the processing capacity can be performed. Therefore, it is possible to always evaluate the processing ability of the volatile organic compound accurately and stably.

  According to a fourth invention, in the third invention, a calibration gas supply line that does not contain a solvent gas is provided, and the calibration operation of the solvent gas processing apparatus main body by the supply of the calibration gas can be performed. An operation method for a solvent gas processing apparatus, comprising: supplying gas to a solvent gas processing apparatus main body; then supplying solvent gas from the solvent gas generating apparatus to perform an evaluation operation of the processing capacity of the solvent gas processing apparatus main body; and It is what.

  Thereby, the measurement accuracy of the solvent gas concentration meter can be improved by supplying the calibration gas. Further, once the residual solvent gas in the main body of the solvent gas processing apparatus is driven out, it is possible to grasp the processing capacity by the diluted solvent gas from the solvent gas generating apparatus with higher accuracy.

  5th invention is a solvent gas generator which supplies solvent gas for the evaluation operation of the processing capability of the solvent gas processing apparatus main body which processes the to-be-processed gas containing a volatile organic compound, Comprising: Solvent of a volatile organic compound Solvent liquid supply means, vaporization means for heating and vaporizing the solvent liquid supplied by the solvent liquid supply means, and generating a solvent gas by controlling the supply amount of the solvent liquid to the vaporization means A solvent liquid supply amount control means for adjusting the amount, a dilution gas supply means for supplying a dilution gas to be mixed with the solvent gas, and a dilution gas supply amount control means for adjusting the supply amount of the dilution gas. Gas and dilution gas can be mixed to form diluted solvent gas, and the concentration of the solvent gas in the diluted solvent gas can be adjusted by controlling the supply amount of the solvent liquid to the vaporizing means and / or the supply amount of the dilution gas. You Together it is obtained by the solvent gas generator and supplying the diluting solvent gas into the solvent gas processing apparatus main body.

  As a result, the diluted solvent gas whose solvent gas concentration is arbitrarily changed under various conditions can be supplied to the solvent gas processing apparatus.

  A sixth invention is the solvent gas generator according to the fifth invention, wherein a solvent gas is generated by selecting any one of a plurality of types of solvent liquids and supplying it to the vaporizing means. .

  As a result, it is possible to evaluate the processing capacity of the solvent gas processing apparatus main body with solvent gases of a plurality of types of solvent liquids, and to set a wider range of evaluation conditions for the solvent gas processing capacity of the solvent gas processing apparatus main body. be able to.

  A seventh invention is a solvent gas generator according to the fifth invention, wherein a plurality of types of solvent liquids are simultaneously supplied to the vaporizing means to generate a mixed solvent gas in which the plurality of types of solvent liquids are mixed. is there.

  As a result, it is possible to evaluate the processing capacity of the solvent gas processing apparatus main body with a mixed solvent gas in which a plurality of types of solvent liquids are mixed. Can be set widely.

  According to an eighth aspect of the present invention, there is provided a solvent gas generator according to the seventh aspect, wherein the component ratio of the solvent gas in each of the plurality of types of solvent liquids can be adjusted.

  As a result, it is possible to evaluate the processing capacity of the solvent gas processing apparatus main body with solvent gases of various component ratios of a plurality of types of solvent liquids, and the evaluation conditions of the processing capacity of the solvent gas in the solvent gas processing apparatus main body Can be set more widely.

  According to a ninth invention, in any one of the fifth to eighth inventions, the concentration of the solvent gas in the diluted solvent gas is changed within a predetermined time, and the diluted solvent gas is supplied to the main body of the solvent gas processing apparatus. This is a solvent gas generator.

  This makes it possible to evaluate the processing capacity of the solvent gas processing apparatus main body due to a change in the concentration of the solvent gas within a predetermined time, and to set a wider range of evaluation conditions for the solvent gas processing capacity in the solvent gas processing apparatus main body. be able to.

  According to a tenth invention, in any one of the fifth to ninth inventions, the solvent liquid is vaporized so that the concentration of the solvent gas in the diluted solvent gas obtained by mixing the solvent gas and air is not more than the lower limit of the explosion limit. The solvent gas generation device is characterized in that the supply amount of dilute gas or the supply amount of dilution gas is controlled.

  Accordingly, the diluted solvent gas can be supplied to the solvent gas processing apparatus main body while always maintaining a safe state.

  In an eleventh aspect of the invention according to any one of the fifth to tenth aspects of the present invention, the apparatus includes temperature detecting means for detecting the temperature of the diluted solvent gas, and further includes temperature adjusting means for adjusting the temperature of the diluted solvent gas by the temperature detecting means. A solvent gas generator.

  This makes it possible to evaluate the processing capacity of the solvent gas processing apparatus main body with respect to the temperature change of the solvent gas, and to set a wider range of evaluation conditions for the solvent gas processing capacity of the solvent gas processing apparatus main body.

  Hereinafter, a solvent gas processing apparatus according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a basic configuration diagram of a solvent gas processing apparatus according to an embodiment of the present invention, FIG. 2 is a basic configuration diagram of a solvent liquid supply unit and a vaporization mixing unit of a solvent gas generation device, and FIG. 3 is a nozzle of a vaporization mixing unit FIG. 4A and FIG. 4B are graphs showing examples of supply of solvent gas from the solvent gas generator, and FIG. 5 is a basic configuration diagram showing an example of a solvent gas processing apparatus main body. FIG. 6 is a basic configuration diagram of another example of the solvent gas processing apparatus main body.

  First, a basic configuration of a solvent gas processing apparatus according to an embodiment of the present invention will be described. The solvent gas generator 100 is mainly composed of a solvent liquid supply unit 101, a vaporizing and mixing unit 120 as vaporizing means, a blower 136, and the like. The solvent liquid supply unit 101 includes a tank 102, a tank 103, and a tank 104 that store different solvent liquids, and a tank 105 that mixes and stores a plurality of solvent liquids at a predetermined ratio. Examples of the solvent liquid include volatile organic compounds such as toluene, xylene, ethyl acetate, and butyl acetate. The volatile organic compound is not limited to this.

  Also, the supply pipes 106, 107, 108, 109 are connected to the tanks 102, 103, 104, 105, respectively. Furthermore, flow meters 110, 111, 112, 113 and on-off valves 114, 115, 116, 117 are arranged in the supply pipes 106, 107, 108, 109, respectively.

  The other end of each supply pipe 106, 107, 108, 109 is connected to a pump (solvent liquid supply means) 118. A discharge pipe 119 is connected to the discharge side of the pump 118, and the discharge pipe 119 is connected to the vaporization mixing unit 120. Further, the supply amount of the solvent liquid of the pump 118 can be adjusted by controlling the pump 118 by the solvent liquid supply amount control means 118a.

  The vaporizing and mixing unit 120 has a vaporization pipe 121 having one end opened, and a heater 122 attached to the outer peripheral surface of the vaporization pipe 121. Energization of the heater 122 is controlled by the temperature detection means 140a so that it is within a predetermined temperature range.

  The vaporization passage 123 of the vaporization pipe 121 is filled with a vaporization promoting body 124 in order to improve the uniform flow and permeability of the solvent liquid flowing in from the discharge pipe 119. The vaporization promoting body 124 is composed of, for example, a metal fiber material made of a thin wire, a metal foam material having connectivity, or the like. A waste liquid pipe 125 for solvent liquid is connected to the lower part of the vaporization pipe 121, and an open / close valve 126 is provided here.

  The outlet pipe 127 is fixed in a direction orthogonal to the vaporizing passage 123 of the vaporizing pipe 121, and the inside of the outlet pipe 127 is electrically connected to the vaporizing passage 123. Further, a nozzle body 128 having a nozzle hole 129 is fixed to the vaporizing tube 121.

  An electromagnetic solenoid 130 is provided on the side of the outlet tube 127 facing the nozzle body 128, and the needle 131 is configured to move in the axial direction by the electromagnetic solenoid 130. On the side of the needle 131 facing the electromagnetic solenoid 130, a tapered portion 132 and a tip portion 133 having a diameter that can be inserted into the nozzle hole 129 are formed.

  Further, on the nozzle body 128 side, a rectifying plate 135 having a plurality of small holes 135 a formed so as to surround the nozzle body 128 is provided. The blower tube 134 is connected to the discharge side of the blower 136 (dilution gas supply means), and further connected to the discharge tube 137 and to the solvent gas supply line 138 in which the discharge tube 137 and the on-off valve 139 are arranged. .

  Further, the supply amount of air (dilution gas) from the blower 136 is adjusted by a dilution gas supply amount control means 136 a that controls the number of revolutions of the motor included in the blower 136. In addition, a heater (temperature adjusting means) 140 is provided in the portion of the discharge cylinder 137, and this is used to adjust the temperature of the diluted solvent gas in which the solvent gas passing through the discharge cylinder 137 and air are mixed by the temperature detecting means (temperature adjusting means) 140a. It comes to adjust. Although the heater 140 is provided, a means for heating and cooling the diluted solvent gas may be provided. In this case, the temperature of the diluted solvent gas can be adjusted more widely, and the evaluation conditions for the solvent gas processing capacity in the solvent gas processing apparatus main body 200 can be set more widely.

  A flow meter 201 and a solvent gas concentration meter 202 are provided on the inlet side of the calibration gas, the diluted solvent gas, and the gas to be processed of the solvent gas processing apparatus main body 200, and on the outlet side of the solvent gas processing apparatus main body 200. A solvent gas concentration meter 203 is provided.

  Although the solvent gas processing apparatus main body 200 does not limit the solvent gas processing system in the present invention, representative apparatuses are shown in FIGS. 5 and 6 as examples. The basic structure shown in FIG. 6 is a catalytic oxidation type solvent gas processing apparatus main body, which is provided with a honeycomb-shaped catalyst body 205 and a heater 206 which is disposed in the vicinity of the catalyst body 205 and heats it. This method can decompose the solvent gas at a lower temperature using an oxidation catalyst.

  Further, the basic configuration shown in FIG. 5 is a combustion heat storage type solvent gas processing apparatus main body, which is a burner 251, honeycomb-shaped heat storage materials 252 a and 252 b that store heat by combustion of the burner 251, a flow path switching unit 253, and a connection member. 254a and 254b are provided. In this method, the solvent gas can be decomposed by the combustion heat of the burner 251 and the high-temperature heat storage materials 252a and 252b.

  A gas supply line 300 to be processed having an open / close valve 302 is connected to the inlet side of the solvent gas processing apparatus main body 200, and a gas to be processed and a calibration gas to be purified by the blower 301 are supplied to the solvent gas processing apparatus main body 200. To do.

  Further, a calibration gas supply line 400 in which an on-off valve 302 is arranged is connected to the gas supply line 300 to be processed on the suction side of the blower 301.

  Next, the basic operation of the solvent gas processing device and the solvent gas generator will be described. First, an operation of supplying a predetermined amount of calibration gas not containing solvent gas to the solvent gas processing apparatus main body 200 will be described. During this operation, the solvent gas processing apparatus main body 200, the flow meter 201, and the solvent gas concentration meter 202 are in an operating state, the on-off valves 139 and 302 are closed, and the operation of the vaporizing and mixing unit 120 is stopped, and the blower 301 is operated. Then, a predetermined amount of calibration gas not containing the solvent gas is supplied to the solvent gas processing apparatus main body 200.

  The calibration gas enters the solvent gas processing apparatus main body 200 through the gas supply line 300 to be processed, the flow meter 201, and the solvent gas concentration meter 202, and is discharged through the solvent gas concentration meter 203 on the outlet side.

  By supplying the calibration gas, the zero point of the solvent gas concentration meters 202 and 203 is calibrated, and the measurement accuracy can be improved. Further, the residual solvent gas before the supply of the calibration gas staying in the solvent gas processing apparatus main body 200 is once discharged, and the zero point of the solvent gas concentration meter 203 on the outlet side can be calibrated more reliably. Further, once the residual solvent gas in the solvent gas processing apparatus main body 200 is driven out, it is possible to grasp the processing capacity of the diluted solvent gas from the solvent gas generating apparatus 100 with higher accuracy.

  The operation of supplying the calibration gas not containing the solvent gas to the solvent gas processing apparatus main body 200 is performed for a predetermined time, the operation of the blower 301 is stopped, the on-off valve 302 is closed, and the calibration step is completed.

  Next, the operation of the solvent gas generator 100 after the calibration step is completed will be described.

  First, as shown in FIG. 3, the electromagnetic solenoid 130 is deenergized. At this time, the needle 131 is pressed against the nozzle hole 129 by a coil spring (not shown) included in the electromagnetic solenoid 130, and the distal end portion 133 is in the nozzle hole 129. The taper portion 132 is inserted into the nozzle hole 129 and closes the nozzle hole 129.

  In this state, the heater (heating means) 122 is energized to preheat the vaporization pipe 121 and the vaporization promoting body 124 to, for example, about 120 degrees C. At this time, the outlet pipe 127 and the nozzle body 128 are also preheated to substantially the same temperature level by the conduction heat from the vaporization pipe 121. The vaporization pipe 121 is controlled to a predetermined temperature by temperature detection means (not shown) such as a thermistor.

  After the preheating operation described above, the blower 136 is driven, air in the atmosphere that does not contain solvent gas is supplied into the blower cylinder 134, and is ejected from the plurality of small holes 135a of the rectifying plate 135 to the vicinity of the nozzle body 128. .

  After the drive of the blower 136 is started, the electromagnetic solenoid 130 is energized as shown in FIG. 4, and at this time, the needle 131 is attracted to the electromagnetic solenoid 130 side against the coil spring (not shown) of the electromagnetic solenoid 130, and the nozzle hole At the same time that the tip 133 is removed from the nozzle 129, the tapered portion 132 is separated from the nozzle hole 129, thereby opening the nozzle hole 129. The on-off valve 139 is opened.

  Next, the pump 118 is driven, for example, the on-off valve 114 is opened, the other on-off valves 115, 116, 117 are closed, the solvent liquid in the tank 102 is sucked into the supply pipe 106, and is discharged through the discharge pipe 119. The vaporization passage 123 of the vaporization pipe 121 is supplied at a predetermined pressure. This solvent liquid comes into contact with the vaporizing pipe 121 and the vaporization promoting body 124 and is instantly vaporized, enters the outlet pipe 127 as a solvent gas, and jets out of the nozzle hole 129 vigorously.

  The solvent gas ejected from the nozzle hole 129 is uniformly mixed with the air, which is the diluted gas ejected from the plurality of small holes 135a of the rectifying plate 135, and becomes a diluted solvent gas, which is discharged through the discharge cylinder 137 and the solvent gas supply line 138. Then, it is supplied to the solvent gas processing apparatus main body 200 through the purification process.

  At this time, the flow rate of the diluted solvent gas by the flow meter 201 and the concentration of the solvent gas in the diluted solvent gas by the solvent gas concentration meter 202 are measured on the inlet side of the solvent gas processing apparatus main body 200.

  Further, the solvent gas component in the diluted solvent gas is purified by the solvent gas processing apparatus main body 200 and discharged. At this time, the solvent gas concentration meter 203 measures the concentration of the solvent gas in the purified air.

  The solvent gas concentration measured by the solvent gas concentration meter 203 is purified to a predetermined value or less under conditions such as the amount of diluted solvent gas supplied from the solvent gas generating device 100 to the solvent gas processing device main body 200 and the solvent gas concentration. And the basic evaluation of the processing capability of the solvent gas processing apparatus main body 200 is performed from the difference in solvent gas concentration between the solvent gas concentration meter 202 and the solvent gas concentration meter 203.

  After the basic evaluation of the processing capability of the solvent gas processing apparatus main body 200, the driving of the pump 118 is stopped, and the heater (heating means) 122 and the electromagnetic solenoid 130 are deenergized. By de-energizing the electromagnetic solenoid 130, the needle 131 is pressed toward the nozzle hole 129, the tip end portion 133 is inserted into the nozzle hole 129, and the tapered portion 132 hits the nozzle hole 129 to close the nozzle hole 129. , Stop the ejection of solvent gas instantly.

  After the above-described operation, the blower 136 is continuously driven for a predetermined time (for example, approximately 30 seconds), air in the atmosphere is supplied into the blowing cylinder 134, and the solvent gas is contained in the flow path leading to the solvent gas supply line 138. Replace with no air. Thereafter, the drive of the blower 136 is stopped and the on-off valve 139 is closed.

  Next, the on-off valve 302 is opened, the blower 301 is driven, and the air to be processed (the gas to be processed) containing the solvent gas from the source of the solvent gas is supplied through the gas supply line 300 to the solvent gas processing apparatus main body. Switch to supply to 200. Thereby, the purification treatment of the air to be treated containing the solvent gas is started. At this time, the flow rate of the air to be processed by the flow meter 201 and the concentration of the solvent gas in the air to be processed by the solvent gas concentration meter 202 are measured on the inlet side of the solvent gas processing apparatus main body 200.

  Further, the solvent gas component in the air to be treated is purified by the solvent gas processing apparatus main body 200 and discharged from the purified air discharge line. At this time, the solvent gas concentration meter 203 measures the concentration of the solvent gas in the purified air.

  The solvent gas concentration measured by the solvent gas concentration meter 203 is purified to a predetermined value or less under conditions such as the amount of air to be treated supplied from the solvent gas generation source to the solvent gas processing apparatus main body 200 and the solvent gas concentration. And a basic confirmation of the processing capacity of the solvent gas processing apparatus main body 200 from the difference in solvent gas concentration between the solvent gas concentration meter 202 and the solvent gas concentration meter 203.

  The overall control of the solvent gas processing apparatus is performed by an operation unit, a notifying unit, and a control device (not shown), a calibration gas supply operation, a solvent gas generator 100 dilution solvent gas supply operation, and a gas to be processed supply operation. Switching control, selection of the solvent liquid in the solvent gas generator 100, setting of the concentration in the diluted solvent gas, and the like, and further the solvent gas from the solvent gas concentration difference between the solvent gas concentration meter 202 and the solvent gas concentration meter 203 Data processing of the processing capability (purification degree or the like) of the processing apparatus main body 200 and notification by storage, display, voice, or the like are performed.

  The solvent gas processing apparatus main body zero calibration operation by supplying calibration gas, and the solvent gas processing apparatus 200 evaluation performance of the solvent gas processing apparatus main body 200 by supplying diluted solvent gas generated by the solvent gas generating apparatus 100 are solvent gas. It can be appropriately performed at the start of operation of the processing apparatus main body 200, at the time of operation stop, at the time of maintenance, or the like.

  Next, a method for setting conditions such as the amount of diluted solvent gas supplied from the solvent gas generator 100 to the solvent gas processing apparatus main body 200 and the solvent gas concentration will be described.

  First, a method of supplying a plurality of solvent liquids to a solvent gas processing apparatus main body 200 of a diluted solvent gas containing the solvent gas of the selected solvent liquid will be described. As described above, in the description of the basic operation, the on-off valve 114 is opened, the other on-off valves 115, 116, 117 are closed, and the solvent liquid in the tank 102 is sucked into the supply pipe 106 by the pump 118 and discharged. Supplying at a predetermined pressure to the vaporizing passage 123 of the vaporizing pipe 121 via the pipe 119, the solvent gas of the solvent liquid in the tank 102 was generated. Further, the on-off valves 114, respectively corresponding to the tanks 102, 103, 104, 115 or 116 is opened and the other is closed, so that any one of the solvent liquids in the opened tank is selected and vaporized, and the diluted solvent containing the solvent gas of the selected solvent liquid The gas can be supplied to the solvent gas processing apparatus main body 200.

  Further, by opening any two of the on-off valves 114, 115, and 116 corresponding to the tanks 102, 103, and 104 and closing the other, respectively, the solvent liquid in the two opened tanks is changed to any two. One can be selected and vaporized, and the diluted solvent gas containing the solvent gas of the selected solvent liquid can be supplied to the solvent gas processing apparatus main body 200. Furthermore, by the same means, any three of the solvent liquids can be selected and vaporized, and the diluted solvent gas containing the solvent gas of the selected solvent liquid can be supplied to the solvent gas processing apparatus main body 200.

  Further, the on-off valves 114, 115, and 116 are flow rate control valves including closing, so that a mixing ratio of a plurality of solvent liquids can be arbitrarily selected and vaporized, and a diluted solvent gas containing a solvent gas having an arbitrary mixing ratio is used. Can be supplied to the main body 200 of the solvent gas processing apparatus.

  In addition, a tank 105 for storing a mixture of a plurality of solvent solutions in advance at a predetermined ratio is stored, and the mixed solvent solution is selected and vaporized, and the selected solvent solution is diluted with a solvent gas. The solvent gas can be supplied to the solvent gas processing apparatus main body 200.

  Further, the concentration of the solvent gas in the diluted solvent gas including the solvent gas of the vaporized solvent liquid can be set by adjusting the supply amount of the diluted gas by the blower 136 and / or the supply amount of the solvent liquid by the pump 118. .

  When the supply amount of the diluted gas by the blower 136 is constant, it can be set by adjusting the supply amount of the solvent liquid by the pump 118. Further, when the supply amount of the solvent liquid by the pump 118 is constant, it can be set by adjusting the supply amount of the diluted gas by the blower 136. Further, it can be set by adjusting the supply amount of the dilution gas by the blower 136 and the supply amount of the solvent liquid by the pump 118. Thus, the amount of the diluted solvent gas and the solvent gas concentration in the diluted solvent gas can be arbitrarily changed.

  The amount of the diluted solvent gas and the solvent gas concentration in the diluted solvent gas can be arbitrarily set by controlling the rate at which the diluted gas supply amount by the blower 136 and the solvent liquid supply amount by the pump 118 are changed. . Furthermore, the selection of the solvent liquid to be vaporized can be switched almost instantaneously by opening / closing control of the on-off valves 114, 115, 116, 117.

  (A) shown in FIG. 4 changes the solvent gas concentration in the diluting solvent gas in a stepless increase or decrease direction, and (b) changes the solvent gas concentration in the diluting solvent gas stepwise. An example of supplying to the solvent gas processing apparatus main body 200 will be shown.

  Further, the supply amount of the solvent liquid to the vaporizing means or the supply amount of the dilution gas is controlled so that the concentration of the solvent gas in the diluted solvent gas mixed with the solvent gas and air is not more than the lower limit of the explosion limit. .

  Further, when the solvent gas concentration meter 202 detects a concentration not less than the lower limit value of the explosion limit of the solvent gas, the supply amount of the solvent liquid to the vaporization means is decreased below the lower limit value of the explosion limit of the solvent gas, or You may make it stop supply to the vaporization means of a solvent liquid. In this case, safety can be further improved.

  Further, a dilution gas supply amount detection means (not shown) is provided, and when the dilution gas supply amount detection means detects a supply amount of dilution gas below a predetermined value, supply of the solvent liquid to the vaporization means is stopped. You may do it. In this case, it is possible to further improve the safety of the blower 136 when it is stopped.

  As described above, the solvent gas processing apparatus of the present invention has a solvent gas processing apparatus main body for processing a gas to be processed containing a volatile organic compound, and heats and vaporizes the solvent liquid of the volatile organic compound to form a solvent gas. A solvent gas generator for generating a diluted solvent gas mixed with the solvent gas and a diluent gas, a gas supply line for supplying a gas to be processed containing a volatile organic compound to the solvent gas processor body, and a solvent gas generator A diluted solvent gas supply line for supplying the diluted solvent gas generated by the apparatus to the solvent gas processing apparatus main body, and supplying the diluted gas generated by the gas to be processed and the solvent gas generating apparatus to the solvent gas processing apparatus main body. The supply operation can be selected, the operation for evaluating the processing capacity of the solvent gas of the solvent gas processing apparatus main body by the supply of the diluted solvent gas generated by the solvent gas generator, and the supply of the gas to be processed In which it made it possible to perform the processing operation of the processing gas.

  As a result, there is no fluctuation (variation) in the solvent gas concentration in a short time, and furthermore, the amount of the diluted solvent gas or the solvent gas concentration in the diluted solvent gas is arbitrarily changed to various conditions to An evaluation of the processing capacity can be performed. Therefore, it is possible to always evaluate the processing ability of the volatile organic compound accurately and stably.

  Further, the present invention is a solvent gas processing apparatus comprising a calibration gas supply line that does not contain solvent gas, and is capable of performing calibration operation of the solvent gas processing apparatus main body by supplying calibration gas. .

  Thereby, the measurement accuracy of the solvent gas concentration meter can be improved by supplying the calibration gas. Further, once the residual solvent gas in the main body of the solvent gas processing apparatus is driven out, it is possible to grasp the processing capacity by the diluted solvent gas from the solvent gas generating apparatus with higher accuracy.

  In addition, a solvent gas processing apparatus main body for processing a gas to be treated containing a volatile organic compound, and a solvent liquid obtained by heating and vaporizing a solvent liquid of the volatile organic compound to form a solvent gas, and a dilution mixed with the solvent gas and a dilution gas Solvent gas generator for generating solvent gas, gas to be processed to be supplied to the main body of the solvent gas processing apparatus containing a volatile organic compound, and solvent gas processing of diluted solvent gas generated by the solvent gas generator A dilute solvent gas supply line to the apparatus main body, the supply of the dilute solvent gas generated by the gas to be treated and the solvent gas generator to the solvent gas treatment apparatus main body can be selected, and the solvent gas generator generates It is possible to perform the operation for evaluating the processing capacity of the solvent gas processing apparatus main body by supplying the diluted solvent gas and the processing operation for the gas to be processed by supplying the gas to be processed. In addition, after supplying a diluted solvent gas from the solvent gas generator and performing an evaluation operation of the solvent gas processing capacity of the main body of the solvent gas processing device, a processing operation of the gas to be processed by supplying the gas to be processed is performed. This is a characteristic operation method of the solvent gas processing apparatus.

  As a result, there is no fluctuation (variation) in the solvent gas concentration in a short time, and furthermore, the amount of the diluted solvent gas or the solvent gas concentration in the diluted solvent gas is arbitrarily changed to various conditions to An evaluation of the processing capacity can be performed. Therefore, it is possible to always evaluate the processing ability of the volatile organic compound accurately and stably.

  In addition, a calibration gas supply line that does not contain solvent gas is provided, and it is possible to perform calibration operation of the solvent gas processing apparatus main body by supplying calibration gas, and the calibration gas is supplied to the solvent gas processing apparatus main body. Thereafter, the solvent gas is supplied from the solvent gas generator, and the operation for evaluating the processing capacity of the main body of the solvent gas processor is performed.

  Thereby, the measurement accuracy of the solvent gas concentration meter can be improved by supplying the calibration gas. Further, once the residual solvent gas in the main body of the solvent gas processing apparatus is driven out, it is possible to grasp the processing capacity by the diluted solvent gas from the solvent gas generating apparatus with higher accuracy.

  Further, a solvent liquid supply means for the solvent liquid of the volatile organic compound, a vaporization means for generating a solvent gas by heating and vaporizing the solvent liquid supplied by the solvent liquid supply means, and a supply amount of the solvent liquid to the vaporization means A liquid supply amount control means for adjusting the amount of solvent gas generated by controlling the gas, a dilution gas supply means for supplying a dilution gas to be mixed with the solvent gas, and a dilution gas supply amount for adjusting the supply amount of the dilution gas Control means, and mixing the solvent gas and the dilution gas to obtain a dilution solvent gas, and controlling the supply amount of the solvent liquid to the vaporization means and / or the supply amount of the dilution gas to control the dilution solvent gas The solvent gas concentration can be adjusted, and the diluted solvent gas is supplied to the main body of the solvent gas processing apparatus.

  As a result, the diluted solvent gas whose solvent gas concentration is arbitrarily changed under various conditions can be supplied to the solvent gas processing apparatus.

  Further, the present invention is a solvent gas generator that selects any one of a plurality of types of solvent liquids and supplies it to the vaporization means to generate a solvent gas.

  As a result, it is possible to evaluate the processing capacity of the solvent gas processing apparatus main body with solvent gases of a plurality of types of solvent liquids, and to set a wider range of evaluation conditions for the solvent gas processing capacity of the solvent gas processing apparatus main body. be able to.

  Further, the solvent gas generator is configured to simultaneously supply a plurality of types of solvent liquids to the vaporizing means and generate a mixed solvent gas in which the plurality of types of solvent liquids are mixed.

  As a result, it is possible to evaluate the processing capacity of the solvent gas processing apparatus main body with a mixed solvent gas in which a plurality of types of solvent liquids are mixed. Can be set widely.

  In addition, the solvent gas generator is characterized in that the component ratio of the solvent gas in each of a plurality of types of solvent liquids can be adjusted.

  As a result, it is possible to evaluate the processing capacity of the solvent gas processing apparatus main body with solvent gases of various component ratios of a plurality of types of solvent liquids, and the evaluation conditions of the processing capacity of the solvent gas in the solvent gas processing apparatus main body Can be set more widely.

  Further, the solvent gas generator is characterized in that the concentration of the solvent gas in the diluted solvent gas is changed within a predetermined time and the diluted solvent gas is supplied to the main body of the solvent gas processing apparatus.

  This makes it possible to evaluate the processing capacity of the solvent gas processing apparatus main body due to a change in the concentration of the solvent gas within a predetermined time, and to set a wider range of evaluation conditions for the solvent gas processing capacity in the solvent gas processing apparatus main body. be able to.

  Further, the supply amount of the solvent liquid to the vaporizing means or the supply amount of the dilution gas is controlled so that the concentration of the solvent gas in the diluted solvent gas mixed with the solvent gas and air is not more than the lower limit value of the explosion limit. And a solvent gas generator.

  Accordingly, the diluted solvent gas can be supplied to the solvent gas processing apparatus main body while always maintaining a safe state.

  In addition, the present invention provides a solvent gas generator comprising temperature detecting means for detecting the temperature of the diluted solvent gas, and temperature adjusting means for adjusting the temperature of the diluted solvent gas by the temperature detecting means.

  This makes it possible to evaluate the processing capacity of the solvent gas processing apparatus main body with respect to the temperature change of the solvent gas, and to set a wider range of evaluation conditions for the solvent gas processing capacity of the solvent gas processing apparatus main body.

  In addition, although it was set as the solvent gas generator of the structure shown in FIG. 2, FIG. 3, it is not limited to this, Other structures may be sufficient. In particular, a pump (solvent liquid supply means) 118 may be provided for each tank of the solvent liquid.

The present invention can be applied to a wide range of apparatuses that require purification treatment of various solvent gases.

DESCRIPTION OF SYMBOLS 100 Solvent gas generator 101 Solvent liquid supply part 102 Tank 103 Tank 104 Tank 105 Tank 106 Supply pipe 107 Supply pipe 108 Supply pipe 109 Supply pipe 110 Flowmeter 111 Flowmeter 112 Flowmeter 113 Flowmeter 114 Open / close valve 115 Open / close valve 116 Open / close Valve 117 On-off valve 118 Pump 118a Solvent liquid supply amount control means 119 Discharge pipe 120 Vapor mixing unit 121 Vaporization pipe 122 Heater 123 Vaporization passage 124 Vaporization promotion body 125 Waste liquid pipe 126 On-off valve 127 Outlet pipe 128 Nozzle body 129 Nozzle hole 130 Electromagnetic solenoid 131 Needle 132 Tapered part 133 Tip part 134 Blower cylinder 135 Current plate 135a Small hole 136 Blower 136a Diluted gas supply amount control means 137 Discharge cylinder 138 Solvent gas supply line 139 On-off valve 14 Heater 140a Temperature detection means 200 Solvent gas processing device main body 201 Flow meter 202 Solvent gas concentration meter 203 Solvent gas concentration meter 204 Catalytic oxidation type solvent gas processing device main body 205 Catalyst body 206 Heating heater 250 Combustion heat storage type solvent gas processing device main body 251 Burner 252a Heat storage material 252b Heat storage material 253 Flow path switching unit 254a Connection member 254b Connection member 300 Processed gas supply line 301 Blower 302 Open / close valve 400 Calibration gas supply line 401 Open / close valve

Claims (11)

A solvent gas processing apparatus main body for processing a gas to be processed containing a volatile organic compound, and a diluted solvent gas obtained by heating and evaporating a solvent liquid of the volatile organic compound to form a solvent gas and mixing the solvent gas and the diluent gas. Gas generating device for generating gas, a gas supply line for processing gas containing a volatile organic compound to a solvent gas processing device main body, and a solvent gas processing device main body for diluted solvent gas generated by the solvent gas generating device A diluted solvent gas supply line to the gas to be treated and the supply of the diluted solvent gas generated by the solvent gas generator to the solvent gas processor main body can be selected and generated by the solvent gas generator. It is possible to perform an operation for evaluating the processing capacity of the solvent gas of the main body of the solvent gas processing apparatus by supplying the diluted solvent gas and a processing operation for the gas to be processed by supplying the gas to be processed. Solvent gas processing apparatus according to claim and. The solvent gas processing apparatus according to claim 1, wherein the solvent gas processing apparatus main body can be calibrated by supplying a calibration gas that does not contain solvent gas. A solvent gas processing apparatus main body for processing a gas to be processed containing a volatile organic compound, and a diluted solvent gas obtained by heating and evaporating a solvent liquid of the volatile organic compound to form a solvent gas and mixing the solvent gas and the diluent gas. Gas generating device for generating gas, a gas supply line for processing gas containing a volatile organic compound to a solvent gas processing device main body, and a solvent gas processing device main body for diluted solvent gas generated by the solvent gas generating device A diluted solvent gas supply line to the gas to be treated and the supply of the diluted solvent gas generated by the solvent gas generator to the solvent gas processor main body can be selected and generated by the solvent gas generator. It is possible to perform an operation for evaluating the processing capability of the solvent gas processing apparatus main body by supplying a diluted solvent gas, and a processing operation for the gas to be processed by supplying the gas to be processed. A dilute solvent gas is supplied from the agent gas generator and the solvent gas processing capacity of the solvent gas processing apparatus main body is evaluated, and then the gas to be processed is processed by supplying the gas to be processed. To operate the solvent gas processing apparatus. It is equipped with a calibration gas supply line that does not contain solvent gas, and it is possible to perform calibration operation of the solvent gas processing apparatus main body by supplying calibration gas, and after supplying the calibration gas to the solvent gas processing apparatus main body, 4. The method for operating a solvent gas processing apparatus according to claim 3, wherein the solvent gas is supplied from the solvent gas generating apparatus and the operation for evaluating the processing capacity of the main body of the solvent gas processing apparatus is performed. A solvent gas generator for supplying a solvent gas for use in an evaluation operation of a processing capacity of a solvent gas processing apparatus main body for processing a gas to be processed containing a volatile organic compound, and a solvent liquid supply means for a solvent liquid of a volatile organic compound And a vaporizer that heats and vaporizes the solvent liquid supplied by the solvent liquid supply means to generate a solvent gas; and a solvent liquid that controls a supply amount of the solvent liquid to the vaporizer and adjusts a generated amount of the solvent gas A supply amount control means; a dilution gas supply means for supplying a dilution gas to be mixed with the solvent gas; and a dilution gas supply amount control means for adjusting the supply amount of the dilution gas. Mixing into a diluted solvent gas, and controlling the supply amount of the solvent liquid to the vaporization means and / or the supply amount of the dilution gas to adjust the solvent gas concentration in the diluted solvent gas, Solvent gas generator and supplying the serial dilution solvent gas into the solvent gas processing apparatus main body. 6. The solvent gas generator according to claim 5, wherein any one of a plurality of types of solvent liquid is selected and supplied to the vaporizing means to generate a solvent gas. 6. The solvent gas generator according to claim 5, wherein a plurality of types of solvent liquids are simultaneously supplied to the vaporizing means to generate a mixed solvent gas in which the plurality of types of solvent liquids are mixed. 8. The solvent gas generator according to claim 7, wherein a component ratio of each solvent gas of the plurality of types of solvent liquids is adjustable. The solvent gas generation according to any one of claims 5 to 8, wherein the concentration of the solvent gas in the diluted solvent gas is changed within a predetermined time, and the diluted solvent gas is supplied to the main body of the solvent gas processing apparatus. apparatus. The supply amount of the solvent liquid to the vaporizing means or the supply amount of the dilution gas is controlled so that the concentration of the solvent gas in the diluted solvent gas mixed with the solvent gas and the air is not more than the lower limit of the explosion limit. The solvent gas generator of any one of Claims 5-9. The temperature detecting means for detecting the temperature of the diluted solvent gas is provided, and the temperature adjusting means for adjusting the temperature of the diluted solvent gas by the temperature detecting means is provided. Solvent gas generator.

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