JP2006247595A - Apparatus for adsorption and concentration - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for adsorption and concentration, which is used for an exhaust gas treatment apparatus containing an organic solvent, which can remove gases without changing treatment air flow and faults even when gas concentrations fluctuate, and which can supply stable concentrated gases. <P>SOLUTION: An adsorption means 1 is provided with an adsorption part 1a and a desorption part 1b, which can be switched at cycles determined by an adsorption/desorption cycle-adjusting means 3. An inlet-concentration measurement means 2 is provided at the inlet of the adsorption part 1a. The signal of a measured concentration is sent to the adsorption/desorption cycle-adjusting means 3. Air for desorption is sent by a fan 5 to the desorption part 1b. Gases are desorbed from the desorption part 1b and then the concentrated gases are supplied to a secondary treatment means. With the above configuration, the amount of gases to be adsorbed to the adsorption means 1 can be stabilized even when the concentration of exhaust gases fluctuate. As a result, this makes it possible to positively remove gases and to obtain stable concentrated gases. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an adsorption concentration apparatus used in an exhaust gas purification apparatus that removes harmful substances such as organic solvents contained in exhaust gas.

  Conventionally, this type of adsorption concentrating device, when processing low-concentration organic solvent gas, allows low-concentration organic solvent gas to be adsorbed by adsorption to the adsorbent, and the adsorbed organic solvent is desorbed from the adsorbent with a small amount of heated gas. In addition, a concentration treatment method is used in which the desorbed small air volume and high-concentration organic solvent gas are treated in a secondary treatment device. As the secondary treatment device, an oxidative decomposition device such as a catalytic combustion device, or a cooling and liquefying recovery is used. A device or the like is generally used. And what controlled operation | movement of the adsorption concentration apparatus from the operating condition of a secondary processing apparatus in order to operate a secondary processing apparatus efficiently and safely is known (for example, refer patent documents 1, 2).

  Hereinafter, the adsorption concentration will be described with reference to FIGS.

  As shown in FIG. 9, the organic solvent gas ventilated through the fan 103 to the adsorbing portion 101a of the adsorbent 101 is adsorbed and purified and released. On the other hand, the adsorbent adsorbing the solvent is moved from the adsorbing unit 101 a to 101 b and is desorbed and regenerated with a small amount of air heated by the heating unit 5 via the fan 102. The organic solvent desorbed from the desorption unit 101b with a small amount of heated air is heated as a concentrated gas by the heater 106a attached to the catalytic combustion device 106 via the fan 105 and is passed through the catalyst 106b. The gas temperature at the catalyst inlet is adjusted by the temperature detector 108 and the temperature controller 109 controlling the heater 106a. The concentrated gas is purified and discharged by oxidizing and decomposing the organic solvent by the catalyst 106b.

  The temperature indicator 110 transmits the outlet temperature of the catalytic combustion apparatus 106 detected by the temperature detector 107 to the adsorption / desorption cycle adjuster 111, and the adsorption / desorption cycle adjuster 111 adjusts the adsorption / desorption cycle of the adsorbent 101. .

  Further, as shown in FIG. 10, the temperature indicator 110 transmits the outlet temperature of the catalytic combustion apparatus 106 detected by the temperature detector 107 to the fan 102 and the fan 105, and the desorption supplied to the desorption part 101 b of the adsorbent 101. The air volume of the heated air for regeneration and the air volume supplied to the catalytic combustion apparatus 106 are adjusted.

  Some of these types of adsorption concentrators measure the intake-side gas concentration and adjust the intake air volume (see, for example, Patent Document 3).

Hereinafter, the adsorption concentration apparatus will be described with reference to FIG. An adsorbent body 101 having an adsorbing part 101a and a desorbing part 101b and a deodorizing control gas sensor 112 having sensitivity to periodic components such as ammonia, hydrogen sulfide and volatile organic compounds are provided. A fan 103 for supplying gas to the adsorption unit 101a of the adsorbent 101 is provided. As the gas concentration detected by the deodorizing control gas sensor 112 increases, the air volume of the adsorption fan 103 increases. As the gas concentration detected by the deodorizing control gas sensor 112 decreases, the air volume of the adsorption fan 103 decreases. As described above, the suction fan 103 is controlled by the control unit 113.
JP-A-10-330 Japanese Patent Laid-Open No. 10-128048 JP 2002-126438 A

  In such a conventional adsorption concentration apparatus, even if the exhaust gas concentration fluctuates, it is reliably removed by the adsorbent, and the concentration of the concentrated gas introduced into the secondary treatment apparatus is such that the secondary treatment can be performed efficiently. It is required to provide.

  However, the method for measuring the temperature of the catalytic combustion apparatus, which is a secondary processing apparatus, cannot be used for other types of secondary processing apparatuses.

  In addition, in an adsorption concentrator that measures the intake gas concentration and adjusts the intake air volume, it is necessary to maintain a constant amount of exhaust air at the factory exhaust, and to maintain a constant exhaust air volume when exhausting from manufacturing equipment. Yes, it could not be used in such applications.

  The present invention solves such a conventional problem, and even when the exhaust gas concentration fluctuates, the amount of adsorption to the adsorbent can be adjusted, and the concentrated gas having a stable concentration can be converted into the secondary gas. It aims at providing the adsorption concentration apparatus which can be supplied to a processing apparatus.

  It is another object of the present invention to provide an adsorption concentrator capable of adsorbing and concentrating exhaust gas stably without changing the processing air volume.

  In order to achieve the above object, the adsorption concentration apparatus of the present invention measures the inlet gas concentration of the adsorbent and adjusts the adsorption / desorption cycle of the adsorbent according to the gas concentration.

  By this means, the gas adsorption amount to the adsorbent can be stabilized even if the gas concentration fluctuates, and the gas can be reliably removed without changing the supply air amount to the apparatus, which is stable in the secondary processing apparatus. An adsorption concentrator capable of supplying a concentrated gas is obtained.

  Another means is that the outlet gas concentration of the adsorbent is measured and the adsorption / desorption cycle of the adsorbent is adjusted according to the gas concentration.

  This makes it possible to know the extent to which the gas adsorbed on the adsorber increases and the removal performance decreases, and even if the gas concentration changes, the removal performance is maintained without changing the air volume, and the gas adsorption to the adsorbent The adsorption concentration apparatus which can stabilize the quantity and can supply a stable concentrated gas to the secondary processing apparatus is obtained.

  The other means measures the inlet gas concentration and outlet gas concentration of the adsorbent and adjusts the adsorption / desorption cycle according to the gas concentration.

  As a result, it is possible to know the concentration fluctuation of the gas supplied to the adsorbent, the concentration of the gas after removal, and the removal performance. It is possible to obtain an adsorption concentrator capable of maintaining the removal performance without change, stabilizing the amount of gas adsorbed to the adsorbent, and supplying a stable concentrated gas to the secondary treatment apparatus.

  Another means is that the inlet concentration and outlet concentration of the adsorbent are measured by one concentration measuring means, and the adsorption / desorption period is adjusted according to the gas concentration.

  As a result, it is possible to know the concentration fluctuation of the gas supplied to the adsorbent, the concentration of the gas after removal, and the removal performance with one concentration measuring means, so that the operation can be performed with the optimum adsorption / desorption cycle. As a result, the adsorption performance can be maintained without changing the air volume, the gas adsorption amount to the adsorbent can be stabilized, and a stable concentrated gas can be supplied to the secondary processing apparatus.

  Another means measures the inlet gas concentration and the outlet gas concentration of the adsorbent and informs the adsorbent maintenance time.

  Thereby, since the optimal maintenance time can be known from the decline in the removal performance of the adsorbent, an adsorption concentrator capable of maintaining the removal performance over a long period of time can be obtained.

  In addition, other means adjust the flow rate of the desorption gas according to the adsorption / desorption cycle, and stabilize the concentration of the desorbed concentrated gas by increasing the flow rate when the cycle is short and decreasing the flow rate when the cycle is long. An adsorption concentrator that can be obtained is obtained.

  Another means is to measure the concentration of the desorbed desorbed gas and adjust the air flow of the desorbed gas so that the concentration of the desorbed gas is stable. can get.

  The other means measures the inlet concentration, outlet concentration and desorption gas concentration of the adsorption means, and adjusts the adsorption / desorption period and the flow rate of the desorption gas based on the concentrations.

  Thereby, since the optimal adsorption / desorption period and the air volume of the desorption gas can be set, it is possible to obtain an adsorption / concentration apparatus capable of reliably removing the gas and obtaining a stable concentrated gas.

  Another means is that the adsorbing means is one or a plurality of adsorption towers packed with an adsorbent.

  Thereby, the adsorption concentration apparatus which can obtain reliable removal performance and a stable concentrated gas is obtained.

  Another means is that the suction means is a suction rotor.

  Thereby, the adsorption concentration apparatus which can obtain reliable removal performance and a stable concentrated gas with a simple configuration is obtained.

  As another means, the concentration measuring means for measuring the gas concentration is a semiconductor gas sensor.

  Thereby, since the gas concentration can be easily measured, an adsorption concentrating device capable of obtaining a reliable removal performance and a stable concentrated gas with a simple configuration can be obtained.

  ADVANTAGE OF THE INVENTION According to this invention, even if the density | concentration of exhaust gas fluctuates, the adsorption | suction concentration apparatus with the effect that it can remove reliably, without changing an air volume can be provided.

  Further, a concentrated gas having a stable concentration can be obtained.

  The invention according to claim 1 of the present invention is an adsorption means provided with an adsorbent for adsorbing exhaust gas containing a low concentration organic solvent, an adsorption part for adsorbing gas to the adsorption means, and desorbing the adsorbed gas And a desorption gas supply means for supplying a desorption gas for desorbing the organic solvent adsorbed by the desorption portion, and periodically switching between the adsorption portion and the desorption portion. In the adsorption concentration apparatus, an adsorption concentration apparatus having an inlet concentration measuring means for measuring the inlet concentration of the adsorption means and an adsorption / desorption cycle adjusting means for adjusting the adsorption / desorption cycle in response to a signal from the inlet concentration measuring means. When the inlet concentration is low, the adsorption time is lengthened, and when the inlet concentration is high, the adsorption time is shortened to adjust the adsorption / desorption cycle.

  According to a second aspect of the present invention, there is provided an adsorption means provided with an adsorbent for adsorbing exhaust gas containing a low concentration organic solvent, an adsorption portion for adsorbing the gas to the adsorption means, and desorbing the adsorbed gas. And a desorption gas supply means for supplying a desorption gas for desorbing the organic solvent adsorbed by the desorption portion, and periodically switching between the adsorption portion and the desorption portion. In the adsorption concentration apparatus, an adsorption concentration apparatus is provided with an outlet concentration measuring means for measuring the outlet concentration of the adsorption means and an adsorption / desorption cycle adjusting means for adjusting the adsorption / desorption cycle in response to a signal from the outlet concentration measuring means. When the outlet concentration becomes higher, the adsorption / desorption cycle is adjusted so as to switch from adsorption to desorption.

  According to a third aspect of the present invention, there is provided an adsorption means provided with an adsorbent for adsorbing an exhaust gas containing a low concentration organic solvent, an adsorption portion for adsorbing the gas to the adsorption means, and desorbing the adsorbed gas. And a desorption gas supply means for supplying a desorption gas for desorbing the organic solvent adsorbed by the desorption portion, and periodically switching between the adsorption portion and the desorption portion. In the adsorption concentrator, an inlet concentration measuring means for measuring the inlet concentration of the adsorption section, an outlet concentration measuring means for measuring the outlet concentration, and an adsorption / desorption cycle for adjusting the adsorption / desorption period by receiving signals from the inlet concentration measuring means and the outlet concentration measuring means. The adsorption / concentration apparatus is provided with a desorption cycle adjusting means, and has an action of setting the adsorption / desorption cycle optimally based on the difference between the inlet concentration and the outlet concentration, and the difference between the inlet concentration and the outlet concentration.

  According to a fourth aspect of the present invention, there is provided an adsorption means provided with an adsorbent for adsorbing an exhaust gas containing a low concentration organic solvent, an adsorption portion for adsorbing the gas to the adsorption means, and desorbing the adsorbed gas. And a desorption gas supply means for supplying a desorption gas for desorbing the organic solvent adsorbed by the desorption portion, and periodically switching between the adsorption portion and the desorption portion. In the adsorption concentration apparatus, sampling means for alternately sampling from the inlet and the outlet of the adsorption section, sampling the gas, concentration measuring means for measuring the gas concentration of the gas sampled by the sampling means, and signals from the concentration measuring means are received and absorbed. It is an adsorption concentrator equipped with an adsorption / desorption cycle adjusting means for adjusting the desorption cycle, and the inlet concentration and the outlet concentration are measured by one concentration measuring means to optimally adjust the adsorption / desorption cycle. It has the effect that.

  Further, the invention according to claim 5 includes a maintenance signal output means for outputting a maintenance signal notifying the maintenance timing of the adsorbent from the signal of the outlet concentration measuring means or the signals of the inlet concentration measuring means and the outlet concentration measuring means. By comparing the outlet concentration or the inlet concentration with the outlet concentration, it has an effect of determining a decrease in the removal capability of the adsorption means and knowing the maintenance time.

  The invention described in claim 6 is configured to adjust the air volume of the desorption gas by the desorption gas air volume adjusting means according to the adsorption / desorption period adjusted by the adsorption / desorption period adjusting means. When the period is short, the air volume is increased. When the period is long, the air volume is decreased to stabilize the concentration of the desorbed concentrated gas.

  Further, the invention described in claim 7 is provided with a desorption gas concentration measuring means for measuring the concentration of the desorbed gas desorbed by the desorbing means, and receives the signal of the desorbed gas concentration measuring means so that the concentration of the desorbed gas becomes steady. The desorption gas flow rate adjusting means adjusts the flow rate of the desorption gas, and has a function of decreasing the flow rate when the desorption gas concentration is lowered and increasing the flow rate when the gas concentration is increased.

  The invention according to claim 8 calculates the adsorption / desorption period and the air volume of the desorption gas from the signals of the inlet concentration measuring means, the outlet concentration measuring means and the desorption gas concentration measuring means of the adsorption means, and adjusts the adsorption / desorption period respectively. Means, and a signal processing means for outputting to the desorption gas air volume adjustment means, and has an effect of setting an optimum adsorption / desorption cycle and an air volume of the desorption gas.

  In the invention according to claim 9, the adsorbing means is constituted by an adsorbent packed in one or a plurality of adsorption towers, and has an action of performing adsorption / desorption by switching the adsorption towers.

  In the invention according to claim 10, the adsorption means is constituted by an adsorption rotor, and has an action of adjusting the adsorption / desorption period by the rotation speed of the adsorption rotor.

  Further, the invention according to claim 11 is that the concentration measuring means for measuring the gas concentration is constituted by a semiconductor type gas sensor, and has an action of measuring the gas concentration from the signal of the semiconductor type gas sensor.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
As shown in FIG. 1, the adsorbing means 1 is made of a material that adsorbs an organic solvent such as activated carbon or zeolite as an adsorbent, and includes an adsorbing part 1 a and a desorbing part 1 b, and is set by the adsorption / desorption period adjusting means 3. Each can be switched in a cycle. Further, the adsorption means 1 is constituted by an adsorption tower filled with an adsorbent, and the adsorption and desorption are switched, and exhaust gas is introduced into the adsorption section 1a by a fan 4. In addition, an inlet concentration measuring means 2 is provided at the inlet of the adsorption unit 1a, and the measured concentration signal is sent to the adsorption / desorption period adjusting means 3.

  Moreover, the desorption gas is sent to the desorption part 1b by the fan 5. A gas is desorbed from the desorption section 1b and a concentrated gas is supplied to the secondary processing means. Here, heated air, water vapor, heated nitrogen gas, or the like is used as the desorption gas, and a heater, a boiler, or the like is used as the heat source.

  The inlet concentration measuring means 2 may be an FID type or PID type detector, a semiconductor type gas sensor, or the like.

  In particular, when a semiconductor gas sensor is used, the cost is low and the configuration is simple.

  In the above configuration, the concentration of the exhaust gas supplied to the inlet concentration measuring means 2 adsorbing means 1 is measured, and a signal is sent to the adsorption / desorption period adjusting means 3 which is a microcomputer. If the concentration is low, the adsorption time is lengthened. Conversely, if the gas concentration is high, the period is adjusted to shorten the adsorption time. Therefore, even when the concentration of the exhaust gas varies, the amount of gas adsorbed on the adsorption means 1 can be stabilized. Therefore, it is possible to reliably remove the gas and obtain a stable concentrated gas.

  Here, the adsorption means 1 is constituted by an adsorption tower filled with an adsorbent, and operates by switching between adsorption and desorption.

  Alternatively, a plurality of adsorption towers may be installed and operated by switching between adsorption and desorption in order.

  Further, the adsorbent may be a cylindrical honeycomb rotor, and a part thereof may be switched between adsorption and desorption by rotating.

(Embodiment 2)
The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. FIG. 2 is a block diagram showing the configuration of the adsorption concentration apparatus of the present invention.

  In the figure, the outlet concentration measuring means 6 measures the gas concentration at the outlet after passing through the adsorption part 1a of the exhaust gas supplied to the adsorption part 1a of the adsorption means 1 by the fan 4. The gas concentration measured by the outlet concentration measuring means 6 is sent to the adsorption / desorption period adjusting means 3 to adjust the adsorption / desorption switching period of the adsorption means 1.

  In the above configuration, the gas concentration measured by the outlet concentration measuring means 6 is the gas concentration after the gas component is removed by the adsorption portion 1a of the adsorption means 1. Here, when the amount of gas adsorbed to the adsorbing portion 1a increases and approaches saturation, the gas removal amount gradually begins to decrease, and the outlet gas concentration increases. By detecting the increase in the outlet gas concentration and switching from adsorption to desorption, the adsorption amount to the adsorption means 1 can be stabilized while maintaining the removal performance, and the concentration of the concentrated gas obtained can be stabilized. .

(Embodiment 3)
The same parts as those in the first or second embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. FIG. 3 is a block diagram showing the configuration of the adsorption concentration apparatus of the present invention.

  In the figure, an inlet concentration measuring means 2 and an outlet concentration measuring means 6 transmit the gas concentrations at the inlet and outlet of the adsorption part 1a to the adsorption / desorption cycle adjusting means 3, respectively. The adsorption / desorption cycle adjusting unit 3 receives signals from the inlet concentration measuring unit 2 and the outlet concentration measuring unit 6 to adjust the adsorption / desorption cycle, and switches the adsorption unit 1a and the desorption unit 1b.

  In the above configuration, the adsorption / desorption cycle adjusting unit 3 compares the inlet concentration and the outlet concentration of the adsorption unit 1a, and calculates the gas removal rate in the adsorption unit 1a of the adsorption unit 1. By switching from adsorption to desorption by detecting that the removal rate is reduced, which is the calculation result, the adsorption amount to the adsorption means 1 can be stabilized while maintaining the removal performance, and the concentration of the concentrated gas obtained can be reduced. Can be stabilized.

(Embodiment 4)
The same parts as those in any of Embodiments 1 to 3 are denoted by the same reference numerals, and detailed description thereof is omitted. FIG. 4 is a block diagram showing the configuration of the adsorption concentration apparatus of the present invention.

  In the figure, the concentration measuring means 7 is connected by a sampling means 12 composed of pipes, valves and pumps so that the gas at the inlet and outlet of the adsorption part 1a of the adsorption means 1 can be switched and sampled alternately. The gas concentration measured by the concentration measuring means 7 is sent to the adsorption / desorption period adjusting means 3. As the concentration measuring means 7, an FID type or PID type detector, a semiconductor type gas sensor, or the like can be used.

  In the above configuration, the gas concentrations at the inlet and outlet of the adsorption unit 1a measured by the concentration measuring unit 7 are transmitted to the adsorption / desorption cycle adjusting unit 3, and the inlet concentration and the outlet concentration of the adsorption unit 1a are compared with each other. The gas removal rate in the adsorption part 1a is calculated. By switching from adsorption to desorption by detecting that the removal rate is reduced, which is the calculation result, the adsorption amount to the adsorption means 1 can be stabilized while maintaining the removal performance, and the concentration of the concentrated gas obtained can be reduced. Can be stabilized.

(Embodiment 5)
The same parts as those in any of Embodiments 1 to 4 are denoted by the same reference numerals, and detailed description thereof is omitted. FIG. 5 is a block diagram showing the configuration of the adsorption concentration apparatus of the present invention.

  In the figure, a maintenance signal output means 8 receives a signal of the removal rate of the adsorption part 1a of the adsorption means 1 from the adsorption / desorption period adjusting means 3, determines a decrease in the removal performance of the adsorbent, and outputs a maintenance signal.

  In the above configuration, since the maintenance signal output means 8 can know that the removal rate of the suction part 1a is reduced, it can detect the deterioration of the suction part 1a or the suction body of the suction means 1, It is possible to appropriately perform treatment such as replacement of the adsorbent and cleaning. The maintenance signal output means 8 includes a combination of a microcomputer and a display such as an LED.

(Embodiment 6)
The same parts as those in any of Embodiments 1 to 5 are denoted by the same reference numerals, and detailed description thereof is omitted. FIG. 6 is a block diagram showing the configuration of the adsorption concentration apparatus of the present invention.

  In the figure, the desorption gas air volume adjusting means 9 receives the signal of the adsorption / desorption period from the adsorption / desorption period adjusting means 3, calculates the air volume of the desorption gas, and sends a signal to the fan 5. The fan receives the signal from the desorption gas air volume adjusting means 9, adjusts the air volume, and blows the desorption gas to the desorption part 1 b of the adsorption means 1.

  In the above configuration, the desorption gas air volume adjusting means 9 controls the fan 5 by adjusting the air volume to a large value when the desorption cycle is short and conversely when the cycle is long. Therefore, the gas concentration desorbed from the desorption part 1b can obtain a stable gas concentration even when the adsorption / desorption cycle varies.

(Embodiment 7)
The same parts as those in any of Embodiments 1 to 6 are denoted by the same reference numerals, and detailed description thereof is omitted. FIG. 7 is a block diagram showing the configuration of the adsorption concentration apparatus of the present invention.

  In the figure, the desorption gas concentration measuring means 10 is installed at the outlet of the desorption portion 1b of the adsorption means 1 and measures the concentration of the desorption gas. The concentration of the desorption gas measured by the desorption gas concentration measuring means 10 is sent to the desorption gas air volume adjusting means 9. The desorption gas air volume adjusting means 9 receives the concentration of the desorption gas, calculates the air volume and outputs it to the fan 5.

  In the above configuration, the desorption gas air volume adjusting means 9 increases the air volume when the concentration of the desorption gas is higher than the set value, and conversely adjusts the air volume to decrease when the concentration of the desorption gas is lower than the set value. The fan 5 is controlled. Therefore, the concentration of the desorption gas can be stabilized, and a stable concentrated gas can be supplied to the secondary processing apparatus.

  Here, the gas concentration to be set depends on the performance of the secondary processing apparatus, and is desirably set to a concentration at which the secondary processing apparatus can operate efficiently.

(Embodiment 8)
The same parts as those in any of Embodiments 1 to 7 are denoted by the same reference numerals, and detailed description thereof is omitted. FIG. 8 is a block diagram showing the configuration of the adsorption concentration apparatus of the present invention.

  In the figure, the signal processing means 11 includes an inlet concentration measuring means 2 for measuring the inlet concentration of the adsorption section 1a of the adsorption means 1, an outlet concentration measuring means 6 for measuring the outlet concentration, and a desorption gas for measuring the outlet concentration of the desorption section 1b. In response to the signal from the concentration measuring means 10, the adsorption / desorption period and the air volume of the desorption gas are calculated and output to the adsorption / desorption period adjusting means 3 and the desorption gas air volume adjusting means 9, respectively.

  In the above configuration, the signal processing means 11 inputs the gas amount to be processed, the removal rate, and the concentration of the desorption gas from the inlet gas concentration and the outlet gas concentration of the adsorbing portion 1a. And the air volume of the desorption gas can be calculated. Therefore, it is possible to surely stabilize the removal performance and the concentration of the desorption gas in the adsorption unit 1a.

  It is useful as an exhaust gas concentration device for efficiently operating an exhaust gas treatment device attached to a facility that discharges volatile organic solvents such as printing, painting, adhesion, chemical product manufacturing, and industrial cleaning. Further, the present invention can be applied to the use of a malodor gas treatment apparatus.

The block diagram which shows the structure of Embodiment 1 of this invention. The block diagram which shows the structure of Embodiment 2 of this invention. The block diagram which shows the structure of Embodiment 3 of this invention. The block diagram which shows the structure of Embodiment 4 of this invention. The block diagram which shows the structure of Embodiment 5 of this invention. The block diagram which shows the structure of Embodiment 6 of this invention. The block diagram which shows the structure of Embodiment 7 of this invention The block diagram which shows the structure of Embodiment 8 of this invention. Block diagram showing the configuration of a conventional adsorption concentrator Block diagram showing the configuration of a conventional adsorption concentrator Block diagram showing the configuration of a conventional adsorption concentrator

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Adsorption means 1a Adsorption part 1b Desorption part 2 Inlet concentration measurement means 3 Adsorption / desorption period adjustment means 5 Fan 6 Outlet concentration measurement means 7 Concentration measurement means 8 Maintenance signal output means 9 Desorption gas air volume adjustment means 10 Desorption gas concentration measurement means 11 Signal processing means 12 Sampling means

Claims (11)

The adsorbing means in which an adsorbent for adsorbing exhaust gas containing a low concentration organic solvent is disposed, and the adsorbing means comprises an adsorbing portion for adsorbing gas and a desorbing portion for desorbing the adsorbed gas, and the desorption In an adsorption concentration apparatus comprising a desorption gas supply means for supplying a desorption gas for desorbing an organic solvent adsorbed at the section, and periodically switching between the adsorption section and the desorption section, the inlet concentration of the adsorption means An adsorption concentration apparatus provided with an inlet concentration measuring means for measuring the concentration and an adsorption / desorption period adjusting means for adjusting the adsorption / desorption period upon receiving a signal from the inlet concentration measuring means. The adsorbing means in which an adsorbent for adsorbing exhaust gas containing a low concentration organic solvent is disposed, and the adsorbing means comprises an adsorbing portion for adsorbing gas and a desorbing portion for desorbing the adsorbed gas, and the desorption In an adsorption concentrating apparatus comprising a desorption gas supply means for supplying a desorption gas for desorbing an organic solvent adsorbed by the section, and periodically switching between the adsorption section and the desorption section, the outlet concentration of the adsorption means An adsorbing and concentrating apparatus comprising an outlet concentration measuring means for measuring the concentration and an adsorption / desorption period adjusting means for adjusting the adsorption / desorption period in response to a signal from the outlet concentration measuring means. The adsorbing means in which an adsorbent for adsorbing exhaust gas containing a low concentration organic solvent is disposed, and the adsorbing means comprises an adsorbing portion for adsorbing gas and a desorbing portion for desorbing the adsorbed gas, A desorption gas supply means for supplying a desorption gas for desorbing the organic solvent adsorbed by the unit, wherein the adsorption unit is configured to periodically switch between the adsorption unit and the desorption unit, and the inlet of the adsorption unit An adsorption concentration apparatus comprising an inlet concentration measuring means for measuring concentration, an outlet concentration measuring means for measuring outlet concentration, and an adsorption / desorption cycle adjusting means for adjusting the adsorption / desorption cycle by receiving signals from the inlet concentration measuring means and the outlet concentration measuring means. . The adsorbing means in which an adsorbent for adsorbing exhaust gas containing a low concentration organic solvent is disposed, and the adsorbing means comprises an adsorbing portion for adsorbing gas and a desorbing portion for desorbing the adsorbed gas, and the desorption A desorption gas supply means for supplying a desorption gas for desorbing the organic solvent adsorbed by the unit, wherein the adsorption unit is configured to periodically switch between the adsorption unit and the desorption unit, and the inlet of the adsorption unit Sampling means for alternately switching from the outlet and sampling the gas, concentration measuring means for measuring the gas concentration of the gas sampled by the sampling means, and an adsorption / desorption cycle adjusting means for receiving the signal of the concentration measuring means and adjusting the adsorption / desorption period Adsorption concentrator equipped with. 5. A maintenance signal output means for outputting a maintenance signal for notifying the maintenance timing of the adsorbent from the signal of the outlet concentration measuring means or the signals of the inlet concentration measuring means and the outlet concentration measuring means. Adsorption concentration equipment. The adsorption concentration according to claim 1, 2, 3, 4, or 5, wherein the air volume of the desorption gas is adjusted by the desorption gas air volume adjustment means according to the adsorption / desorption period adjusted by the adsorption / desorption period adjustment means. apparatus. Desorption gas concentration measuring means for measuring the concentration of the desorbed gas desorbed by the desorbing means is received, and is desorbed by the desorbing gas air volume adjusting means so as to receive a signal from the desorbing gas concentration measuring means so that the concentration of the desorbing gas becomes steady The adsorption concentrator according to claim 1, 2, 3, 4, or 5, wherein the gas flow rate is adjusted. Calculates the adsorption / desorption cycle and desorption gas air volume from the signals of the inlet concentration measurement means, outlet concentration measurement means, and desorption gas concentration measurement means of the adsorption means, and outputs them to the adsorption / desorption period adjustment means and desorption gas air volume adjustment means, respectively. 6. The adsorption concentrating device according to claim 1, further comprising a signal processing means. The adsorption concentrating apparatus according to claim 1, 2, 3, 4, 5, 6, 7 or 8, wherein the adsorption means comprises an adsorbent packed in one or a plurality of adsorption towers.   The adsorption concentrator according to claim 1, 2, 3, 4, 5, 6, 7 or 8, wherein the adsorption means comprises an adsorption rotor.   The adsorption concentration apparatus according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10, wherein the concentration measuring means for measuring the gas concentration is constituted by a semiconductor type gas sensor.

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