JP2010207742A - Solvent cooling and separating apparatus of gas treatment apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a solvent cooling and separating apparatus of a gas treatment apparatus, which uses a Peltier element to cool, concentrate and separate a solvent concentrated gas containing a solvent desorbed from activated carbon and does not need cooling water. <P>SOLUTION: In the solvent cooling and separating apparatus, the flow path of the solvent concentrated gas flowing out from an activated carbon tank 10 and the flow path of inert gas flowing into the activated carbon tank 10 are adjacently disposed, and the Peltier element 46 is disposed at a partition wall 42 partitioning the two flow paths so as to expose one heating or cooling surface to the flow path of the solvent concentrated gas and expose the other heating or cooling surface to the flow path of the inert gas. In a desorption process, the solvent concentrated gas is cooled and the solvent is concentrated and separated by the cooling of the Peltier element 46, and the inert gas is heated by the heating of the Peltier element 46 simultaneously. The cooling water is not needed. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention condenses and separates the desorbed solvent in a gas treatment apparatus that purifies the solvent contained in the gas to be treated discharged from the process using the solvent by the adsorption process and desorbs the solvent by the desorption process. The present invention relates to a solvent cooling / separation apparatus.

There is a growing interest in environmental pollution, and it is required to purify and discharge the gas to be treated including the solvent discharged in the process using the solvent and to recover the solvent. Therefore, as a gas processing apparatus for purifying the gas to be processed containing this solvent, for example, the technique described in Japanese Patent Application Laid-Open No. 7-39717 is as follows. A treated gas containing a solvent is introduced into an activated carbon tower containing activated carbon, and the solvent contained in the treated gas is adsorbed by the incorporated activated carbon, and the purified gas is discharged from the activated carbon tower as a purified gas. The activated carbon adsorbing the solvent is heated by a heater to desorb the solvent from the activated carbon, and the solvent-concentrated gas containing the solvent is cooled by a cooling condenser in which cooling water circulates to condense and separate the solvent.
JP 7-39717 A

  In the technique disclosed in Japanese Patent Laid-Open No. 7-39717, a solvent concentrated gas containing a solvent desorbed from activated carbon is cooled by a cooling condenser in which cooling water circulates to condense and separate the solvent. There is a problem of requiring water.

  The present invention has been made in view of the circumstances of the prior art, and does not require cooling water to cool and concentrate the solvent-condensed gas containing the solvent desorbed from the activated carbon. It is an object of the present invention to provide a solvent cooling separation device for a gas processing device.

  In order to achieve this object, the solvent cooling / separation apparatus of the gas treatment apparatus of the present invention allows the gas to be treated containing a solvent to flow into the activated carbon tank in the adsorption step, and adsorbs the solvent with the activated carbon built in the activated carbon tank. The purified gas purified from the activated carbon tank is allowed to flow out, and in the desorption process, the activated carbon that has adsorbed the solvent is heated to desorb the adsorbed solvent, and an inert gas is flowed into the activated carbon tank. Solvent of a gas processing device for condensing the solvent from the inert gas by flowing out the solvent concentrated gas contained by concentrating the desorbed solvent and flowing the solvent concentrated gas into a solvent cooling / separating device and cooling it In the cooling / separating apparatus, the solvent cooling / separating apparatus is provided adjacent to the flow path of the solvent-concentrated gas flowing out from the activated carbon tank and the flow path of the inert gas flowing into the activated carbon tank, A Peltier element is formed by exposing one surface of heat generation or cooling to the flow path of the solvent-concentrated gas to the partition wall that separates the two flow paths and exposing the other surface of heat generation or cooling to the flow path of the inert gas. And at least one stage of the desorption step, the solvent-concentrated gas is cooled by heat generation and cooling of the Peltier element to condense and separate the solvent, and at the same time, the inert gas is heated.

  Further, in the adsorption step, a gas to be treated containing a solvent is allowed to flow into the activated carbon tank, and the purified gas that has been purified from the activated carbon tank by adsorbing the solvent by the activated carbon incorporated in the activated carbon tank is flown out, Desorbing the adsorbed solvent by heating the activated carbon adsorbing the solvent, allowing the inert gas to flow into the activated carbon tank and concentrating the desorbed solvent to flow out the concentrated solvent gas, In a solvent cooling / separation apparatus of a gas processing apparatus for condensing and separating the solvent from the inert gas by flowing a solvent concentrated gas into a solvent cooling / separation apparatus and cooling the Peltier element, The first heat conducting plate connected to one surface of the Peltier element for heat generation or cooling is exposed to the flow path of the solvent-concentrated gas flowing out of the activated carbon tank, and the other surface of heat generation or cooling is exposed. The second heat conduction plate that is continued is exposed to the flow path of the inert gas flowing into the activated carbon tank, and the solvent-concentrated gas is cooled by heat generation and cooling of the Peltier element at least at one time of the desorption process. Then, the inert gas may be heated at the same time as the solvent is condensed and separated.

  Then, at the end of the desorption process, the polarity of the voltage applied to the Peltier element is switched so that the inert gas is cooled and flows into the activated carbon tank.

  Furthermore, the flow path of the solvent-enriched gas may be disposed inside the flow path of the inert gas.

  Furthermore, the inert gas flow path may be disposed inside the solvent concentrated gas flow path.

  Moreover, you may comprise the partition of the flow path arrange | positioned inside the said substantially bellows shape.

  Furthermore, the partition wall of the flow path of the solvent-enriched gas disposed on the inner side has a substantially bellows shape with the vertical direction as an axis, and an inner edge of the substantially bellows shape is provided with an edge directed downward. The inner diameter of the edge may be increased toward the lower side, and a reservoir container in which the condensed solvent is stored may be disposed below the vertical axis of the solvent-concentrated gas flow path. .

  The solvent cooling / separating device of the gas treatment device according to claim 1 is arranged such that a solvent concentrated gas flow path flowing out from the activated carbon tank and an inert gas flow path flowing into the activated carbon tank are arranged adjacent to the solvent cooling separation apparatus. The Peltier element is exposed so that one side of the heat generation or cooling is exposed to the flow path of the solvent concentrated gas and the other side of the heat generation or cooling is exposed to the flow path of the inert gas to the partition wall that divides the two flow paths. In the desorption process, the solvent-concentrated gas is cooled by the Peltier element to condense and separate the solvent, and cooling water is not required as in the prior art. Moreover, since the inert gas flowing into the activated carbon tank is simultaneously heated by the heat generated in the Peltier element, the temperature of the activated carbon tank is not lowered by the flowing inert gas, and the desorption efficiency is not deteriorated.

  In the solvent cooling / separating apparatus for a gas processing apparatus according to claim 2, a Peltier element is provided in the solvent cooling / separating apparatus, and the first heat conduction plate connected to one surface of heat generation or cooling of the Peltier element is provided. Since the second heat conducting plate connected to the other side of the heat generation or cooling is exposed to the flow path of the inert gas flowing into the activated carbon tank while being exposed to the flow path of the solvent concentrated gas flowing out from the activated carbon tank. As in Item 1, in the desorption process, in order to cool the solvent concentrated gas and condense and separate the solvent, no cooling water is required as in the prior art, and the inert gas flowing into the activated carbon tank is heated to flow in. be able to. Furthermore, by using the first and second heat conductive plates, there is no restriction that the flow path of the solvent concentrated gas and the flow path of the inert gas flowing into the activated carbon tank must be disposed adjacent to each other. .

  In the solvent cooling / separation apparatus for a gas processing apparatus according to claim 3, the inert gas is cooled and flows into the activated carbon tank by switching the polarity of the voltage applied to the Peltier element at the end of the desorption process. Since it was made to do, activated carbon is cooled with the cooled inert gas and the effect | action which adsorb | sucks a solvent can be recovered rapidly.

  6. The solvent cooling / separating apparatus for a gas processing apparatus according to claim 4 or 5, wherein the solvent-enriched gas flow path is disposed inside the inert gas flow path, or the solvent-enriched gas flow path is disposed inside. In addition, since the flow path of the inert gas is arranged in the two and the two flow paths have a double structure, a Peltier element may be provided in the partition walls of the two flow paths, and the structure is simple.

    In the solvent cooling / separation device for a gas processing device according to claim 6, the Peltier element is configured by forming the partition walls of the flow passages disposed inside the two flow passages having a double structure into a substantially bellows shape. Can be disposed over a wide area, the area where the solvent concentrated gas and the inert gas are in contact with each other can be increased, and heat can be efficiently transferred to the solvent concentrated gas and the inert gas.

  In the solvent cooling / separation device of the gas processing device according to claim 7, the partition wall of the solvent-concentrated gas flow passage disposed inside the double structure is formed in a substantially bellows shape with the vertical direction as an axis. Since the edge directed downward is provided at the inner edge of the bellows shape, the solvent condensed and separated by cooling drops down from the edge directed downward toward the inner edge of the substantially bellows shape. Moreover, since the inner diameter of the inner end edge is increased toward the lower side, the solvent dripped from the edge is directly dropped and accumulated in a storage container disposed below, and the condensed and separated solvent is downward. It does not flow on the surface of a Peltier element. Accordingly, the solvent concentrated gas containing the solvent can be efficiently cooled by the Peltier element.

  Hereinafter, a first embodiment of a solvent cooling / separating apparatus for a gas processing apparatus according to the present invention will be described with reference to FIGS. FIG. 1 is a block diagram of a gas processing apparatus using a first embodiment of the solvent cooling / separating apparatus of the gas processing apparatus of the present invention. FIG. 2 is a time table showing the operation of the on-off valve, voltage application, Peltier element and blower in the first embodiment shown in FIG. FIG. 3 is a view for explaining the operation of the solvent cooling / separating apparatus of FIG.

  In the first embodiment of FIG. 1, the activated carbon tank 10 is formed in a substantially U shape so that both ends of the activated carbon tank 10 are located upward. An inflow chamber 16 is formed at one end of the elongated hollow shape, and a discharge chamber 18 is formed at the other end. The inflow chamber 16 is connected to a flow path through which the raw gas as the gas to be treated including the solvent flows through the first on-off valve 20. The inflow chamber 16 is connected to a flow path through which an inert gas such as nitrogen gas from the solvent cooling / separating device 40 flows through the second on-off valve 24. Furthermore, a flow path through which the purified gas flows out through the third on-off valve 26 is connected to the discharge chamber 18. The exhaust chamber 18 is connected to a flow path through which the solvent concentrated gas containing the concentrated solvent flows out to the solvent cooling / separating device 40 via the fourth on-off valve 28.

  The outer peripheral wall of the cylindrical elongated hollow activated carbon tank 10 is formed of a metal having heat resistance and conductivity, such as stainless steel, and also functions as the first electrode 30. In addition, the first electrode 30 as the outer peripheral wall is grounded. In addition, a second electrode 32 formed of a metal having heat resistance and conductivity such as a linear, cylindrical, or columnar stainless steel that is long in the axial direction is disposed at the axial center position of the cylindrical activated carbon tank 10. Is done. Of course, the second electrode 32 is configured to be insulated from the first electrode 30. Note that the second electrode 32 is appropriately supported and fixed inside the elongated activated carbon tank 10 having a hollow shape. The activated carbon 14 is inserted and incorporated in the activated carbon tank 10, and the activated carbon 14 is interposed between the first electrode 30 and the second electrode 32. Further, an AC voltage 36 as a power source is applied between the first electrode 30 and the second electrode 32 via a switch 38 in series. Needless to say, the first electrode 30 is connected to the ground side of the AC voltage 36 power transmission circuit. A means for heating the activated carbon 14 is configured by applying a voltage between the first electrode 30 and the second electrode 32 to cause a current to flow through the activated carbon 14 to generate heat by Joule heat.

  The solvent cooling / separating device 40 has a double structure centering on the vertical direction, and the inner partition 42 is formed of a material having poor thermal conductivity such as a heat insulating material, and has a substantially bellows shape. The inside of the partition wall 42 is a flow path for the solvent concentrated gas, and the space between the partition wall 42 and the outer wall 44 is a flow path for an inert gas. Then, it replaces the inner partition wall 42 and exposes one surface to be heated or cooled to the inner solvent-concentrated gas flow path and exposes the other surface to be heated or cooled to the outer inert gas flow path. A number of Peltier elements 42 are provided. An inner diameter of the substantially bellows shape of the partition wall 42 is formed so as to become larger from the upper side to the lower side, and an edge 48 directed downward is provided at the inner edge portion of the substantially bellows shape.

  And the flow path into which an inert gas flows in via the blower 22 is connected to the lower side of the flow path of the inert gas between the partition wall 42 and the outer wall 44 of the solvent cooling / separating device 40. In addition, a flow path is connected to the inflow chamber 16 through the second opening / closing valve 24 from above the flow path of the inert gas between the partition wall 42 and the outer wall 44 of the solvent cooling / separating device 40. Furthermore, a reservoir 50 for storing the solvent is provided below the solvent-concentrated gas channel inside the partition wall 42 of the solvent cooling / separating device 40, and a channel is provided in the discharge chamber 18 via the fourth on-off valve 28. Connected. Further, the upper side of the flow path of the solvent concentrated gas inside the partition wall 42 of the solvent cooling / separating device 40 is connected to an appropriate device (not shown) for collecting the inert gas discharged. The lower part of the reservoir 50 is connected to a fifth on-off valve 52 that drains the accumulated solvent to the outside.

  The operation of the first embodiment of the solvent cooling / separating apparatus of the gas processing apparatus having such a configuration will be described with reference to FIG. First, the adsorption of the solvent is performed in the activated carbon tank 10. When an appropriate amount of solvent is adsorbed on the activated carbon 14 of the activated carbon tank 10, the solvent is desorbed in the activated carbon tank 10. In the adsorption process, first, the first on-off valve 20 and the third on-off valve 26 connected to the activated carbon tank 10 are opened, the second on-off valve 24 and the fourth on-off valve 28 are closed, The blower 22 is not rotated (OFF), the switch 38 is turned OFF, and no voltage is applied between the first electrode 30 and the second electrode 32. Further, no voltage is applied to the Peltier element 46, and neither heat generation nor cooling is performed. In such a state, when the raw gas as the gas to be treated containing the solvent flows into the activated carbon tank 10 from the inflow chamber 16 at one end through the first on-off valve 20, the solvent passes through the gap of the activated carbon 14. The purified gas adsorbed and purified by the activated carbon 14 is discharged from the discharge chamber 18 at the other end as a purified gas to the outside through the third on-off valve 26. When the amount of the solvent adsorbed on the activated carbon 14 reaches an appropriate predetermined value, the first and third on-off valves 20 and 26 are closed to stop the inflow of the raw gas, and the adsorption process is completed.

  In the desorption process, first, the first and third on-off valves 20 and 26 are closed, the second and fourth on-off valves 24 and 28 are opened, and the blower 22 is rotated. (ON). Then, nitrogen gas or the like, which is an inert gas, flows into the activated carbon tank 10, and the purified gas remaining in the activated carbon tank 10 is discharged to the solvent cooling / separating device 40 via the fourth on-off valve 28. The inert gas is allowed to flow in for a predetermined amount or for a predetermined time, and after the inside of the activated carbon tank 10 is filled with the inert gas, the switch 38 is turned on to turn on the first electrode 30 and the second electrode. A voltage is applied between the electrodes 32 and a voltage is applied to the Peltier element 46 so that the inside of the partition wall 42 is cooled. Then, an electric current flows through the activated carbon 14, the activated carbon 14 is heated to about 200 degrees by Joule heat, the adsorbed solvent is desorbed from the activated carbon 14, and the solvent is concentrated and contained through the fourth on-off valve 28. The concentrated gas flows into the flow path of the solvent concentrated gas inside the solvent cooling / separating device 40, is cooled by the Peltier element 46, and the contained solvent is condensed and separated from the inert gas and drops down. The inert gas from which the solvent has been condensed and separated by cooling flows to the recovery device as discharged inert gas. At the same time, the inert gas flowing through the inert gas flow path between the partition wall 42 and the outer wall 44 is heated by the heat generated by the Peltier element 46, and the high-temperature inert gas passes through the second on-off valve 24. Into the inflow chamber 16. Then, the solvent that has been condensed and separated by cooling and dripped downward is accumulated in the accumulation container 50. Further, when the desorption is performed up to a predetermined value set appropriately, the switch 38 is turned off to stop the application of the voltage and the desorption is stopped. Then, the solvent-concentrated gas is discharged from the activated carbon 14 by the inert gas that flows in after that, and is cooled by the solvent cooling / separating device 40 to condense and separate the solvent. Thereafter, the polarity of the voltage applied to the Peltier element 46 is changed, the inert gas flowing between the partition wall 42 and the outer wall 44 is cooled and flows into the inflow chamber 16, and the activated carbon 14 is cooled. When the activated carbon 14 is lowered to a predetermined temperature and exhibits a desired adsorption performance, the application of voltage to the Peltier element 46 is stopped, and the rotation of the blower 22 is stopped to complete the desorption. Here, in preparation for the next adsorption step, the first and third on-off valves 20 and 26 are opened, and the second and fourth on-off valves 24 and 28 are closed.

  As shown in FIG. 3, the solvent that has been condensed and separated by cooling of the solvent-concentrated gas and dropped down flows down on the substantially bellows-shaped slope and drops downward from the edge 48 directed downward of the inner edge. It falls off and accumulates in the accumulation container 50. Here, the inner diameter of the upper inner edge portion is smaller than the lower side, and the solvent dripping downward from the edge 48 of the upper inner edge portion is straight without dropping on the other inclined surface of the substantially bellows shape. It falls into the accumulation container 50 and accumulates. Therefore, the solvent condensed and separated on the upper side of the substantially bellows-shaped slope on the lower side does not flow, and the solvent concentrated gas containing the solvent can be efficiently cooled. When the amount of the solvent that has dripped into the storage container 50 and accumulated becomes an appropriate amount, the fifth on-off valve is opened and discharged to the outside.

  In the first embodiment of the solvent cooling / separating apparatus of the gas processing apparatus of the present invention, the solvent can be condensed and separated by cooling the solvent concentrated gas by the Peltier element 46 in the desorption process, and cooling water is required as in the prior art. And not. Moreover, since the inert gas flowing into the activated carbon tank 10 is simultaneously heated by the heat generated in the Peltier element 46, the temperature of the activated carbon tank 10 is not lowered by the flowing inert gas, and the desorption efficiency is not deteriorated. . In addition, the polarity of the voltage applied to the Peltier element 46 can be switched to cool the inert gas and flow into the activated carbon tank 10, and the activated carbon 14 built in the activated carbon tank 10 can be cooled by the cooled inert gas. It can be cooled quickly, and the action of adsorbing the solvent can be quickly recovered. Further, the partition wall 42 of the flow path disposed inside the two flow paths having a double structure is formed in a substantially bellows shape, whereby the Peltier element 46 can be disposed in a wide area, and the solvent concentrated gas In addition, the area in contact with the inert gas can be increased, and heat can be efficiently transferred to the solvent concentrated gas and the inert gas. Further, the partition wall 42 of the flow path of the solvent-enriched gas disposed inside the double structure has a substantially bellows shape with the vertical direction as an axis, and an edge 48 facing downward is provided on the inner end edge of the substantially bellows shape. Therefore, the solvent condensed and separated by cooling is dripped down from the edge directed downward to the inner end edge of the substantially bellows shape. Moreover, since the inner diameter of the inner end edge is increased toward the lower side, the solvent dropped from the edge 48 is directly dropped and accumulated in the reservoir 50 disposed below, and the condensed and separated solvent is removed. It does not flow on the surface of the lower Peltier element 46. Therefore, the solvent concentrated gas containing the solvent can be efficiently cooled by the Peltier element 46.

  Next, a second embodiment of the solvent cooling / separating apparatus of the gas processing apparatus of the present invention will be described with reference to FIG. FIG. 4 is a structural view of a second embodiment of the solvent cooling / separating apparatus of the gas processing apparatus of the present invention. In FIG. 4, the same or equivalent members as those shown in FIG. 1 to FIG.

  The solvent cooling / separating device 60 of the second embodiment shown in FIG. 4 has a double-layered cylindrical shape with the vertical direction as an axis, and the inner partition wall 62 is formed of a material having poor thermal conductivity. A Peltier element 46 is disposed so as to be replaced. Therefore, the Peltier element 46 exposes one surface of heat generation or cooling to the inside of the partition wall 62 and the other surface to the outside of the partition wall 62. Then, an inert gas is flowed into the partition wall 62 from the lower side by the blower 22 to form a flow path of the inert gas, and the inert gas flows from the upper side to the activated carbon tank 10. A space between the partition wall 62 and the outer wall 64 is a flow path for the solvent concentrated gas. The solvent concentrated gas flows from the lower side and the inert gas from which the solvent is separated is discharged from the upper side. A reservoir 50 is connected to the lower side of the flow path of the solvent concentrated gas between the partition wall 62 and the outer wall 64.

  In the desorption process, a voltage is applied so that the outside of the partition wall 62 is cooled by the Peltier element 46, the solvent concentrated gas is cooled, and the solvent is condensed and separated. As shown in the first and second embodiments, when the flow path has a double structure, any of the flow paths may be a solvent-concentrated gas flow path and an inert gas flow path. A voltage may be applied to the Peltier element 46 with an appropriate polarity according to the flowing gas. Further, in order to increase the area where the Peltier element 46 is disposed, in the case of a cylindrical double tube as in the second embodiment, if the axial length is increased in order to increase the area of the partition wall 62. It ’s enough.

  Furthermore, a third embodiment of the solvent cooling / separating apparatus of the gas processing apparatus of the present invention will be described with reference to FIG. FIG. 5 is a structural view of a third embodiment of the solvent cooling / separating device of the gas processing apparatus of the present invention, wherein (a) is an overall structural view, and (b) is an AA cross-sectional view of (a). FIG. In FIG. 5, the same or equivalent members as those shown in FIGS. 1 to 4 are denoted by the same reference numerals, and redundant description is omitted.

  In the solvent cooling / separating apparatus 70 of the third embodiment shown in FIG. 5, the outer wall 74 has a cylindrical shape with the vertical direction as an axis, and a partition wall 72 is formed of a material having poor thermal conductivity at the center inside thereof. A Peltier element 46 is disposed so as to replace the partition wall 72. Therefore, the inside of the cylindrical shape is divided into two flow paths by the partition wall 72, and the Peltier element 46 exposes one surface of heat generation or cooling to one flow channel and the other surface to the other flow channel. Then, an inert gas is introduced from the lower side of one flow path partitioned by the partition wall 72 by the blower 22 to form an inert gas flow path, and the inert gas flows from the upper side to the activated carbon tank 10. The other flow path partitioned by the partition wall 72 is a flow path for the solvent concentrated gas. The solvent concentrated gas flows from the lower side and the inert gas from which the solvent is separated is discharged from the upper side. A reservoir container 50 is connected to the lower side of the flow path of the solvent concentrated gas.

  In the desorption process, a voltage is applied so as to cool the flow path of the solvent concentrated gas by the Peltier element 46, the solvent concentrated gas is cooled, and the solvent is condensed and separated. Since the Peltier element 46 is disposed so as to replace a part of one plate-like partition wall 72, the structure thereof is simple.

  Furthermore, a fourth embodiment of the solvent cooling / separating apparatus of the gas processing apparatus of the present invention will be described with reference to FIG. FIG. 6 is a structural view of a fourth embodiment of the solvent cooling / separating device of the gas processing apparatus of the present invention. In FIG. 6, the same or equivalent members as those shown in FIG. 1 to FIG.

  In the solvent cooling / separating apparatus 80 of the fourth embodiment shown in FIG. 6, a solvent-concentrated gas flow path 82 and an inert gas flow path 84 are provided close to each other but independently. A flow path through which the solvent concentrated gas flows is connected to the lower side of the flow path 82 for the solvent concentrated gas, and a reservoir container 50 is provided, and a flow path through which the inert gas from which the solvent is separated is discharged from the upper side. It is connected. Further, the inert gas flow path 84 is connected so that the inert gas flows in from the lower side by the blower 22, and the inert gas flows out from the upper side to the activated carbon tank 10. The first heat conduction plate 86 connected to one surface of the Peltier element 46 that generates heat or cools is exposed to the flow path 82 of the solvent-enriched gas, and the first heat conduction plate 86 and the inside of the flow path 82 are exposed. A plurality of heat exchanging plates 86a protrudes. In addition, the second heat conductive plate 88 connected to the other surface of the Peltier element 46 that generates heat or cools is exposed to the inert gas flow path 84, and the second heat conductive plate 88 passes through the flow path 84. A plurality of heat exchange plates 88a protrude. Of course, the first and second heat conducting plates 86 and 88 and the heat exchanging plates 86a and 88a are made of a material having good thermal conductivity.

  In the desorption process, a voltage is applied so as to cool the first heat conducting plate 86 exposed to the flow path 82 of the solvent concentrated gas by the Peltier element 46, the solvent concentrated gas is cooled, and the solvent is condensed and separated. By using the first and second heat conducting plates 86 and 88, the position where the Peltier element 46 is disposed and the position where the solvent-concentrated gas flow path 82 and the inert gas flow path 84 are disposed are restricted. There is no.

In the above embodiment, the solvent cooling / separating devices 40, 60, 70, 80 all have a structure with the vertical direction as the axis, but the structure is not limited to this, and the structure in which the condensed and separated solvent can be recovered appropriately. If present, the axial direction may be a horizontal direction or an oblique direction. Further, the structure of the activated carbon tank 10 that adsorbs the solvent contained in the gas to be treated and desorbs the adsorbed solvent is not limited to the one described above, but as described in JP-A-7-39717. A thing as described in Unexamined-Japanese-Patent No. 2000-107563 may be sufficient.
JP 2000-107563 A

It is a block diagram of the gas processing apparatus using the 1st example of the solvent cooling separation device of the gas processing apparatus of the present invention. It is a timetable which shows operation | movement of an on-off valve, a voltage application, a Peltier device, and a blower in 1st Example shown in FIG. It is a figure for demonstrating operation | movement of the solvent cooling separation apparatus of FIG. It is a structural diagram of 2nd Example of the solvent cooling separation apparatus of the gas processing apparatus of this invention. It is a block diagram of 3rd Example of the solvent cooling separation apparatus of the gas processing apparatus of this invention, (a) is a whole structure figure, (b) is an AA cross-sectional arrow view of (a). It is a structure figure of 4th Example of the solvent cooling separation apparatus of the gas processing apparatus of this invention.

DESCRIPTION OF SYMBOLS 10 Activated carbon tank 14 Activated carbon 16 Inflow chamber 18 Discharge chamber 20 1st on-off valve 22 Blower 24 2nd on-off valve 26 3rd on-off valve 28 4th on-off valve 30 1st electrode 32 2nd electrode 36 AC voltage 38 Switch 40, 60, 70, 80 Solvent cooling / separation device 42, 62, 72 Bulkhead 44, 64, 74 Outer wall 46 Peltier element 48 Edge 50 Reservoir container 52 Fifth open / close valve 82 Solvent concentrated gas flow path 84 Active gas flow path 86 First heat conduction plate 86a, 88a Heat exchange plate 88 Second heat conduction plate

Claims (7)

In the adsorption step, a gas to be treated containing a solvent is caused to flow into the activated carbon tank, and the purified gas is adsorbed by the activated carbon incorporated in the activated carbon tank and the purified gas purified from the activated carbon tank is flown out. The activated carbon adsorbed is heated to desorb the adsorbed solvent, and an inert gas is flowed into the activated carbon tank to concentrate the desorbed solvent, and the contained solvent concentrated gas is discharged, and the solvent concentration is performed. In the solvent cooling / separation apparatus of the gas processing apparatus for condensing and separating the solvent from the inert gas by flowing the gas into the solvent cooling / separation apparatus, the solvent concentration separated from the activated carbon tank is added to the solvent cooling / separation apparatus. A gas flow path and an inert gas flow path that flows into the activated carbon tank are disposed adjacent to each other, and a partition wall that divides the two flow paths is provided with heat generation or cooling in the solvent concentrated gas flow path. And the Peltier element is disposed so that the other surface of heat generation or cooling is exposed to the flow path of the inert gas, and the solvent is generated by heat generation and cooling of the Peltier element at least at one time of the desorption process. A solvent cooling / separating apparatus for a gas processing apparatus, wherein the concentrated gas is cooled to condense and separate the solvent and simultaneously heat the inert gas. In the adsorption step, a gas to be treated containing a solvent is caused to flow into the activated carbon tank, and the purified gas is adsorbed by the activated carbon incorporated in the activated carbon tank and purified gas is discharged from the activated carbon tank. The activated carbon adsorbed is heated to desorb the adsorbed solvent, and an inert gas is flowed into the activated carbon tank to concentrate the desorbed solvent, and the contained solvent concentrated gas is discharged, and the solvent concentration is performed. In a solvent cooling / separating apparatus of a gas processing apparatus for condensing and separating the solvent from the inert gas by flowing gas into the solvent cooling / separating apparatus, a Peltier element is provided in the solvent cooling / separating apparatus, and the Peltier element The first heat conduction plate connected to one side of the heat generation or cooling is exposed to the flow path of the solvent concentrated gas flowing out from the activated carbon tank and connected to the other side of the heat generation or cooling. The second heat conducting plate is exposed to the flow path of the inert gas flowing into the activated carbon tank, and at least at one stage of the desorption process, the solvent-concentrated gas is cooled by heat generation and cooling of the Peltier element. A solvent cooling / separating apparatus for a gas processing apparatus, wherein the inert gas is heated at the same time as the solvent is condensed and separated. 3. The solvent cooling / separating apparatus for a gas processing apparatus according to claim 1, wherein the inert gas is cooled by switching a polarity of a voltage applied to the Peltier element at the end of the desorption process. A solvent cooling / separation device for a gas processing device, wherein the solvent cooling / separation device is configured to flow into the gas treatment device. 2. The solvent cooling / separating apparatus for a gas processing apparatus according to claim 1, wherein the solvent-concentrated gas flow path is disposed inside the inert gas flow path. Separation device. 2. The solvent cooling / separating apparatus for a gas processing apparatus according to claim 1, wherein the inert gas flow path is disposed inside the solvent concentrated gas flow path. Separation device. 6. The solvent cooling / separating apparatus for a gas processing apparatus according to claim 4 or 5, wherein a partition wall of the flow path disposed inside the gas processing apparatus has a substantially bellows shape. 5. The solvent cooling / separating apparatus for a gas processing apparatus according to claim 4, wherein a partition wall of the solvent-concentrated gas flow path disposed inside is substantially bellows shaped with the vertical direction as an axis, and the inner end of the substantially bellows shaped shape. A reservoir in which the solvent is condensed and separated below the vertical axis of the flow path of the solvent-concentrated gas so that the inner edge has an inner diameter that increases toward the lower side. A solvent cooling / separating apparatus for a gas processing apparatus, characterized by comprising: