JP4951017B2 - Adsorption gas processing equipment - Google Patents

Description

The present invention relates to an adsorptive gas processing apparatus used for removing, for example, volatile organic substances (so-called VOC) contained in factory exhaust gas,
More specifically, the present invention relates to an adsorption-type gas treatment apparatus that brings a gas to be treated into contact with an adsorbent and adsorbs and removes a gaseous removal target in the gas to be treated from the gas to be treated by the adsorbent.

  In this type of adsorption-type gas treatment apparatus, when the gas to be treated contains moisture (water vapor) in the adsorption process for adsorbing the gaseous object to be removed in the gas to be treated, the moisture in the gas to be treated is also absorbed. It is adsorbed by the adsorbent together with the gaseous removal target, and the removal performance (in other words, the purification performance for the gas to be treated) of the original gaseous removal target is greatly reduced due to the moisture adsorption. End up.

  And in order to prevent the performance fall resulting from this water | moisture content adsorption | suction, a dehumidification process is also performed to the to-be-processed gas prior to an adsorption | suction process (refer the 3rd page upper right column of patent document 1).

  In the adsorption type gas treatment device disclosed in Patent Document 1, the adsorbent is removed from the adsorbent in the desorption step (in other words, the adsorbent regeneration step) in which the gaseous removal target adsorbed in the adsorption step is desorbed from the adsorbent. The adsorbent is efficiently heated by irradiating the electromagnetic microwave, and the gaseous removal object (organic solvent) adsorbed in the previous adsorption process by heating the adsorbent by this microwave irradiation is removed from the adsorbent. The adsorbent is regenerated by desorption.

JP 59-6924

  However, even if the gas to be treated is dehumidified prior to the adsorption process as described above, since there is a practical limit to the dehumidification, a considerable amount of moisture still remains in the gas to be treated after dehumidification. Therefore, it is not possible to sufficiently prevent the performance degradation caused by moisture adsorption as described above, and accordingly, the amount of adsorbent necessary for obtaining a required removal rate for the gaseous removal target in the gas to be treated is small. As the number of devices increases, the cost of the devices increases, and the amount of heat consumed in the desorption process increases due to the increase in the amount of adsorbent required and the desorption process for desorption of adsorbed moisture. There was still the problem of being bulky.

  In addition, in order to dehumidify the gas to be treated prior to the adsorption process, for example, in the case of cooling dehumidification, a gas exchanger heat exchanger and a cooling heat source device are required as a dehumidifying device. At the same time, there has been a problem that the apparatus cost and energy consumption as a whole increase.

  In view of this situation, the main problem of the present invention is to effectively solve the above problems by adopting a rational device configuration.

To constitute an adsorption type gas treatment device that makes a gas to be treated come into contact with an adsorbent and removes a gaseous removal object in the gas to be treated from the gas to be treated by the adsorbent .
You may provide the microwave irradiation means to irradiate the said adsorption agent with the microwave for heating adsorption water in the adsorption | suction process which makes the said adsorption agent adsorb | suck the gaseous removal target object in to-be-processed gas .

  In general, microwaves in a specific frequency range (around 2.45 GHz) can selectively and efficiently heat only liquid water.

  Therefore, if the microwave in such a frequency range is irradiated to the adsorbent in the adsorption process by the microwave irradiation means as the microwave for adsorption moisture heating, the moisture in the gas to be treated is subject to gaseous removal in the adsorption process. Even if it is adsorbed by the adsorbent together with the substance, immediately after the adsorption, only the adsorbed moisture (condensed moisture) is selectively and efficiently heated and vaporized. The gas can be desorbed into the processing gas, and in this way, it can be brought into a state close to adsorbing only the gaseous object to be adsorbed in the adsorption process.

  That is, this can effectively prevent the performance degradation caused by moisture adsorption as described above, and the removal performance (purification performance for the gas to be treated) for removing the gaseous object in the gas to be treated by adsorption. ) Can be increased to a level close to that in the case where there is no moisture adsorption in the adsorption step.

  And by improving the apparatus performance effectively in this way, it is possible to effectively reduce the amount of adsorbent necessary to obtain the required removal rate for the gaseous removal target in the gas to be treated. The equipment can be downsized and the equipment cost can be reduced, and the amount of adsorbed moisture to be desorbed in the desorption process is greatly reduced due to the reduction in the amount of adsorbent required. The amount of heating required in the process can be reduced, and the energy consumption can be effectively reduced.

  In addition, it is not necessary to dehumidify the gas to be treated prior to the adsorption process in order to suppress moisture adsorption, or even if the dehumidification process is performed, the dehumidifying device can be of a small capacity, Also from this point, it is possible to effectively reduce the size of the entire device and reduce the overall device cost and energy consumption.

  In the implementation of the above configuration, the adsorption moisture heating microwave is not necessarily limited to a microwave having a frequency in the vicinity of 2.45 GHz, and the adsorption moisture out of the gaseous removal target adsorbed by the adsorbent and the moisture. It is only necessary to use microwaves in a frequency range that can be preferentially heated and vaporized at the stage of the adsorption process (that is, microwaves in a frequency range that can suppress performance degradation due to moisture adsorption).

In addition, to configure the above adsorption gas processing apparatus,
Provided a breathable adsorption rotor that holds the adsorbent dispersed in the rotor rotation direction,
Each part in the rotor rotation direction of this adsorption rotor is configured to be alternately positioned in the adsorption area that is the ventilation area of the gas to be treated and the desorption area that is the ventilation area of the desorption gas by the rotation of the adsorption rotor,
You may arrange | position the said microwave irradiation means to the state which irradiates a microwave with respect to the adsorption agent of the rotor part in the said adsorption area among the said adsorption rotors .

  That is, in this configuration, basically, the gas to be treated in the gas to be treated is adsorbed and removed by the adsorbent in the rotor portion by passing the gas to be treated through the inner rotor portion of the adsorption rotor in the adsorption region. An adsorption process is performed.

  Also, a desorption step in which the desorption gas passes through the inner rotor portion of the adsorption rotor in the desorption region to desorb the gaseous removal object adsorbed in the rotor portion in the previous adsorption step to the desorption gas. And the adsorbent in the rotor portion is regenerated in preparation for the next adsorption step.

  In other words, by rotating the adsorption rotor, each part of the rotor is alternately positioned in the adsorption zone and the desorption zone, thereby enabling continuous execution of the adsorption step and the desorption step. The purification process of the gas to be processed for adsorbing and removing the object to be removed is continuously performed.

  In this configuration, the microwave irradiating means is disposed in a state in which microwave irradiation is performed on the adsorbent of the rotor portion in the adsorption area of the adsorption rotor as described above, so that moisture in the gas to be treated is absorbed in the adsorption area. Even if it is adsorbed by the adsorbent of the rotor part in the region together with the gaseous removal target, only the adsorbed moisture (condensed moisture) is selectively and efficiently heated and vaporized by the microwave irradiation in the form of vaporizing the adsorbed moisture. The adsorbent can be desorbed into the gas to be treated at the stage of the adsorption zone, which is the ventilation area of the gas to be treated.

That is, by this, in the configuration in which continuous parallel implement the steps adsorption and desorption process in accordance with the rotation of the adsorption rotor can be obtained the effect of the foregoing, removing adsorbed gaseous removal target to be treated in the gas It is possible to improve the performance of the apparatus to a level close to the case where there is no moisture adsorption in the adsorption step.

Here, the first characteristic configuration of the present invention relates to an adsorption gas processing apparatus, and the characteristic is
An adsorption-type gas treatment apparatus for bringing a gas to be treated into contact with an adsorbent and adsorbing and removing a gaseous removal object in the gas to be treated from the gas to be treated by the adsorbent,
Provided with a microwave irradiation means for irradiating the adsorbent with microwaves for heating adsorbed moisture in the adsorption step of adsorbing the gaseous removal object in the gas to be treated to the adsorbent;
Provided a breathable adsorption rotor that holds the adsorbent dispersed in the rotor rotation direction,
Each part in the rotor rotation direction of this adsorption rotor is configured to be alternately positioned in the adsorption area that is the ventilation area of the gas to be treated and the desorption area that is the ventilation area of the desorption gas by the rotation of the adsorption rotor,
The microwave irradiation means is disposed in a state in which microwave irradiation is performed from the upstream side or the downstream side in the flow direction of the gas to be processed with respect to the adsorbent of the rotor portion in the adsorption region of the adsorption rotor,
The adsorption rotor is internally partitioned into a plurality of adsorbent holding sections in the rotor rotation direction by a metal partition wall .

  In other words, according to this configuration, in the adsorption area, the adsorption agent for heating the adsorption moisture irradiated to the adsorbent of the inner rotor portion of the adsorption rotor (that is, the adsorbent of the adsorbent holding section in the adsorption area) by the microwave irradiation means. Microwaves can be prevented from leaking out of the adsorption area through the inside of the adsorption rotor by the reflection of the microwave by the metal partition wall, and the rotor part in the adsorption area (adsorbent holding section) Irradiation microwaves by the microwave irradiation means can be efficiently irradiated in a state including a reflected wave by the metal partition wall.

  In addition, the above-mentioned metal partition wall prevents the microwave irradiated by the microwave irradiation means from leaking to the adsorbent holding section in the adsorption zone, and the adsorbent to be irradiated. The effect of desorbing the adsorbed moisture from the adsorbent in the holding compartment by intensive heating and vaporization can be further enhanced.

  That is, by these things, the apparatus performance which carries out the adsorption removal of the gaseous removal target object in to-be-processed gas can be improved further effectively.

The second characteristic configuration of the present invention also relates to an adsorption type gas processing apparatus,
An adsorption-type gas treatment apparatus for bringing a gas to be treated into contact with an adsorbent and adsorbing and removing a gaseous removal object in the gas to be treated from the gas to be treated by the adsorbent,
Provided with a microwave irradiation means for irradiating the adsorbent with microwaves for heating adsorbed moisture in the adsorption step of adsorbing the gaseous removal object in the gas to be treated to the adsorbent;
Provided a breathable adsorption rotor that holds the adsorbent dispersed in the rotor rotation direction,
Each part in the rotor rotation direction of this adsorption rotor is configured to be alternately positioned in the adsorption area that is the ventilation area of the gas to be treated and the desorption area that is the ventilation area of the desorption gas by the rotation of the adsorption rotor,
The microwave irradiating means is provided in a state in which microwave irradiation is performed from the upstream side in the flow direction of the gas to be processed to the adsorbent of the rotor portion in the adsorption zone of the adsorption rotor .

  In other words, according to this configuration, the adsorption agent is irradiated with microwaves for heating adsorption moisture from the upstream side in the flow direction of the gas to be processed (inflow side of the gas to be processed in the adsorption zone). Compared to microwave irradiation to the adsorbent from the downstream side in the flow direction of the processing gas, the adsorbent adsorbed moisture is micro-measured at an early stage before the accumulation of adsorbed water in the adsorbent progresses even during the process of the adsorption process. It can be heated and vaporized by wave irradiation and desorbed from the adsorbent into the gas to be treated.

  That is, this makes it possible to more effectively and surely present a state close to adsorbing only the gaseous removal object in the adsorption process, and the gaseous removal object in the gas to be treated. The apparatus performance for adsorbing and removing can be further effectively improved.

The third feature configuration of the present invention specifies an embodiment suitable for the implementation of the first or second feature configuration .
The microwave irradiation region of the microwave irradiation means for the adsorbent is surrounded by a metal wall.

  In general, since metal reflects microwaves, if the microwave irradiation region of the microwave irradiation means for the adsorbent is surrounded by a metal wall as described above, the adsorbent is reflected by the metal wall. It is possible to efficiently irradiate the irradiation microwave by the microwave irradiation means in a state including the wave, thereby further effectively improving the performance of the apparatus for adsorbing and removing the object to be removed in the gas to be processed. it can.

The fourth characteristic configuration of the present invention specifies an embodiment suitable for the implementation of any of the first to third characteristic configurations ,
A desorption microwave that irradiates the adsorbent with a desorption microwave having a frequency different from that of the adsorption moisture heating microwave in the desorption step of desorbing the gaseous removal object adsorbed in the adsorption step from the adsorbent. The irradiation means is provided.

  In other words, if the frequency range is selected according to the gaseous removal target contained in the gas to be treated and the adsorbent used, the microwave can efficiently heat the removal target and the adsorbent adsorbed on the adsorbent. it can.

  Therefore, if the microwave in such a frequency range is irradiated to the adsorbent in the desorption process by the above-mentioned desorption microwave irradiation means as a desorption microwave, the object to be adsorbed and removed in the desorption process by the microwave irradiation. The agent can be efficiently heated, and the gaseous removal object adsorbed by the adsorbent in the previous adsorption step can be efficiently desorbed from the adsorbent into the desorption gas.

  That is, due to this, the energy consumption in the desorption process (in other words, required for regeneration of the adsorbent) is combined with the reduction in the necessary amount of adsorbent and the large decrease in the amount of adsorbed moisture desorbed in the desorption process. Energy) can be further effectively reduced.

  In addition, if the microwave of the frequency range which can selectively heat only the removal target object and adsorbent adsorbed by the adsorbent is adopted as the microwave to be detached in the implementation of the above configuration, an apparatus member that does not need to be heated is used. Unnecessary heating can be avoided and energy consumption in the desorption process can be reduced more effectively.

  In addition, if the microwave irradiation area of the microwave irradiation means for desorption to the adsorbent is surrounded by a metal wall body, the adsorbent in the desorption process is desorbed including the reflected wave from the metal wall body. The irradiation microwave by the microwave irradiation means can be efficiently irradiated, and the energy consumption in the desorption process can be further effectively reduced.

As a reference example, when adopting an apparatus format in which the same area is alternately used for the adsorption area for the adsorption process and the desorption area for the desorption process, the microwave irradiation means for irradiating the adsorption moisture heating microwave is different from that. Instead of deploying both of the desorption microwave irradiation means in the same area, a common microwave irradiation means is disposed in the same area, and the irradiation microwave by the common microwave irradiation means is used for adsorption moisture heating. You may make it switch to a microwave and the removal microwave from which it differs in a frequency range.
The fifth feature configuration of the present invention specifies an embodiment suitable for the implementation of the fourth feature configuration.
The desorption microwave irradiating means is provided in a state where microwave irradiation is performed from the upstream side in the flow direction of the desorption gas to the adsorbent of the rotor portion in the desorption region of the adsorption rotor. .
The sixth characteristic configuration of the present invention specifies an embodiment suitable for the implementation of any of the first to fifth characteristic configurations,
The gaseous removal target that is adsorbed and removed from the gas to be treated by the adsorbent is a volatile organic substance.

Longitudinal sectional view showing equipment configuration Cross section showing device configuration Perspective view showing suction rotor The figure which shows an adsorption process and a desorption process typically

  1 to 3 show an adsorption type gas processing apparatus for purifying a gas to be processed G by removing a gaseous removal object v such as an organic solvent contained in the gas G to be processed such as a factory exhaust gas. Is an adsorption rotor in which an adsorbent X such as a porous zeolite is held over the entire circumference in the rotation direction of the rotor. The adsorption rotor 1 has a structure in which the adsorbent X is held in a rotor-constituting material 1x having a honeycomb structure. Ventilation is possible in the direction of the axis P.

  A peripheral wall 1n is provided on the outer peripheral surface portion of the adsorption rotor 1, and the adsorption rotor 1 is internally partitioned into a large number of adsorbent holding sections 1a in the rotor rotation direction by a partition wall 1m.

  2 is an apparatus case, and the inside is divided into an adsorption region 3 which is a ventilation region of the gas G to be treated and a desorption region 4 which is a ventilation region of the desorption gas H by an internal wall 2a.

  The adsorption rotor 1 is accommodated in the apparatus case 2 in a state of straddling the adsorption area 3 and the desorption area 4, and each part in the rotation direction of the adsorption rotor 1 (that is, the adsorbent holding section) as the adsorption rotor 1 rotates. 1a) is alternately passed through the adsorption zone 3 and the desorption zone 4.

  That is, as the adsorption rotor 1 rotates, the gas to be treated G passes through the adsorbent holding section 1a in the adsorbing area 3 and thereby the adsorbent X in the adsorbent holding section 1a in the adsorbing area 3 An adsorption step of adsorbing and removing the gaseous removal object v in the gas to be treated G is performed.

  Further, along with the rotation of the adsorption rotor 1, in the desorption zone 4, the high-temperature desorption gas H is passed through the adsorbent holding zone 1 a in the zone, and thereby the adsorbent in the adsorbent holding zone 1 a in the desorption zone 4. A desorption step of desorbing the gaseous removal object v adsorbed in the previous adsorption step from the adsorbent X to the desorption gas H is performed, and the adsorbent X in the adsorbent holding section 1a is prepared for the next adsorption step. To play.

  That is, by continuously passing the adsorbent holding sections 1a in the adsorption rotor 1 through the adsorption area 3 and the desorption area 4 as the rotor rotates, the adsorption process and the desorption process are continuously performed in parallel. The purification of the gas to be processed G that adsorbs and removes the gaseous removal object v from the gas to be processed G is continuously performed.

  The gaps between the inner wall 2a and outer wall 2b of the device case 2 and the suction rotor 1 are sealed by a sealing means that allows the suction rotor 1 to rotate.

  5a is a gas flow path for supplying the gas G to be processed discharged from the production chamber or the like to the gas inflow chamber 3a of the adsorption zone 3, and 5b is an object to be removed by passing through the adsorption rotor 1 in the adsorption zone 3. Reference numeral v denotes a processed gas path through which the gas to be processed G ′ that has been removed by adsorption (ie, the purified processed gas) is sent out from the gas outflow chamber 3 b of the adsorption zone 3.

  6a is a desorption gas path for supplying the desorption gas H to the gas inflow chamber 4a of the desorption region 4, and 6b is in a state including the gaseous removal object v by passing through the adsorption rotor 1 in the desorption region 4. This is a used desorption gas path for sending out the used desorption gas H ′ from the gas outflow chamber 4 b of the desorption region 4.

  The air volume of the desorption gas H is limited to a smaller volume than the gas volume of the gas to be processed G, so that the concentration of the gaseous removal object v in the gas to be processed G is higher than that in the used desorption gas H ′. The concentration process for increasing the concentration of the gaseous removal object v is performed by performing the adsorption process and the desorption process together with the purification process of the gas G to be processed.

  Then, the used desorption gas H ′ including the gaseous removal target v in a concentrated state is sent to the catalytic combustion type or direct combustion type post-stage gas processing apparatus through the used desorption gas path 6b, and this post-stage gas processing apparatus. The gaseous removal object v in the used desorption gas H ′ is oxidatively decomposed and rendered harmless by the combustion treatment in FIG.

  On the other hand, in the gas inflow chamber 3a of the adsorption zone 3 (that is, the upstream side in the gas flow direction in the adsorption zone 3), the adsorbent X of the adsorbent holding section 1a in the adsorption zone 3 is used as the microwave irradiation means. Is provided with a magnetron 7 for irradiating the adsorption water heating microwave mw having a frequency of around 2.45 GHz, and the adsorbent X in the adsorption process is irradiated by the magnetron 7 with the adsorption water heating microwave mw. This prevents a decrease in apparatus performance caused by the adsorbent X adsorbing the moisture s in the gas G to be treated together with the gaseous removal object v.

  That is, in the adsorption zone 3, the gas to be treated G is passed through the adsorbent holding section 1 a in the adsorption zone 3 of the adsorption rotor 1 as described above, so that the adsorbent X in the adsorbent holding section 1 a causes the gas G to be treated. In this adsorption process, the moisture s (water vapor) in the gas to be treated G is also adsorbed by the adsorbent X during the adsorption process, as schematically shown in FIG. Moisture adsorption occurs.

  On the other hand, in the adsorption type gas treatment device of this example, the magnetron 7 irradiates the adsorbent X in the adsorption step with the microwave mw for heating the adsorbed water, thereby performing adsorption as schematically shown in FIG. The adsorbed moisture s is adsorbed immediately after adsorption in a form in which only the adsorbed moisture s (condensed moisture) is selectively heated efficiently and vaporized from the gaseous removal object v and the moisture s adsorbed by the agent X. In the process step, the adsorbent X is desorbed into the gas G to be treated.

  That is, the desorption in the adsorption process of the adsorbed moisture s reveals a state in which only the gaseous removal object v in the gas to be treated G is adsorbed on the adsorbent X in the adsorption process, thereby Therefore, the performance of the apparatus for adsorbing and removing the gaseous removal object v in the gas to be processed G from the gas to be processed G is improved.

  As described above, the moisture s desorbed from the adsorbent X at the stage of the adsorption process is transferred to the treated gas passage 5b together with the purified treated gas G '(treated gas) from which the gaseous removal target v is adsorbed and removed. Sent out.

  In addition, in the desorption process in which the desorption gas H is passed through the adsorbent holding section 1a in the desorption region 4 by desorbing the adsorbed moisture s from the adsorbent X in the adsorption step, the adsorbent X As shown in FIG. 4 (c), only the gaseous removal object v is almost desorbed from the adsorbent X so that the amount of adsorbed moisture to be desorbed from the adsorbent X is greatly reduced. The amount of moisture brought into H ′ is also greatly reduced.

  The peripheral wall 1n and the inner partition wall 1m of the suction rotor 1 are formed of a metal material, and the inner wall body 2a and the outer wall body 2b of the device case 2 are also formed of a metal material. In addition, a metal peripheral wall 1n is provided on the outer peripheral portion of the magnet, and the interior of the adsorption rotor 1 is partitioned into a large number of adsorbent holding sections 1a in the rotor rotation direction by the metal partition wall 1m. By adsorbing the gas inflow chamber 3a of the adsorption area 3 which is an irradiation area of the microwave mw with the metal wall bodies 2a and 2b, the microwave irradiation by the magnetron 7 as described above makes the adsorbent in the adsorption area 3 The irradiation microwave mw from the magnetron 7 is efficiently irradiated to the adsorbent X in the holding section 1a in a state including the reflected waves from the metal walls 1n, 1m, 2a, 2b. In addition, the irradiation microwave mw is prevented from leaking from the adsorbent holding section 1a to be irradiated to the adjacent adsorbent holding section 1a, and the irradiation microwave is applied to the adsorbent holding section 1a to be irradiated. It can be made to work intensively.

  Further, by performing microwave irradiation on the adsorbent X in the adsorbent holding section 1a in the adsorption zone 3 from the upstream side in the flow direction of the gas to be treated G as described above, the adsorption is performed even during the process period of the adsorption process. The adsorbed moisture s in the adsorbent X is desorbed from the adsorbent X as early as possible before the accumulation of adsorbed moisture s in the agent X proceeds.

[Another embodiment]
Next, another embodiment of the present invention will be listed.
In the above-described embodiment, the disk-shaped adsorption rotor 1 that allows the gas G to be processed and the desorption gas H to pass in the direction of the rotor rotation axis P in each of the adsorption zone 3 and the desorption zone 4 is shown. The adsorption rotor 1 may be cylindrical, and the gas G to be treated and the desorption gas H may be passed in the radial direction of the rotor in each of the adsorption zone 3 and the desorption zone 4.

As a reference example, without using the adsorption rotor 1, the gas to be processed G is passed through the adsorbent containing chamber containing the adsorbent X, and the adsorbing step is performed using the adsorbent containing chamber as an adsorption zone. An apparatus configuration in which the state to be performed and the state in which the desorption process is performed in a form in which the desorption gas H is passed through the adsorbent storage chamber and the adsorbent storage chamber is used as the desorption region are alternately configured. Good.

Similarly, as a reference example, an apparatus configuration of a type in which a fluid adsorbent X is alternately moved between an adsorption chamber for performing an adsorption process and a desorption chamber for performing a desorption process, or an endless belt shape in which the adsorbent X is held. You may employ | adopt the apparatus structure of the type which circulates a body over an adsorption | suction zone and a desorption zone.

  As shown by a broken line in FIG. 1, as a desorption microwave irradiation means, a desorption magnetron 8 for irradiating the adsorbent X with a desorption microwave mw ′ having a frequency different from that of the adsorption moisture heating microwave mw in the desorption process. The gaseous state in which the adsorbent X is adsorbed in the previous adsorption step by efficiently heating the adsorption removal object v and the adsorbent X in the desorption step by irradiation of the desorption microwave mw ′ by the desorption magnetron 8 The removal object v may be efficiently desorbed from the adsorbent X.

  That is, the required temperature of the desorption gas H can be greatly reduced by performing desorption by microwave irradiation by such desorption microwave irradiation means.

  The removal microwave may be a microwave in a frequency range in which the gaseous removal object v adsorbed on the adsorbent X and the adsorbent X can be efficiently heated, but in particular, the removal object adsorbed on the adsorbent X If microwaves in a frequency range that can selectively heat only the object v and the adsorbent X are employed, it is possible to avoid unnecessary heating of device members that do not require heating and to further improve energy consumption in the desorption process. Can be reduced.

  In the above-described embodiment, an example in which the rotation area of the adsorption rotor 1 is divided into only two areas of the adsorption area 3 and the desorption area 4 is shown. For example, a configuration may be adopted in which a target ventilation region is appropriately added to divide the rotation region of the adsorption rotor 1 into three or more regions, such as providing a purge region for venting the purge gas.

  Further, in the above-described embodiment, the example in which the adsorption moisture heating microwave mw is irradiated to the adsorbent X from the upstream side in the flow direction of the gas to be processed G has been described. Depending on the concentration of the gas removal object v or the kind of the gas removal object v, the adsorption moisture heating microwave mw is irradiated from the downstream side in the flow direction of the gas to be treated G, or the upstream side and the downstream side. For example, various microwave irradiation modes can be adopted for the purpose of further improving the performance of the apparatus, such as irradiation with the microwave mw for heating adsorbed moisture.

  In addition, the specific configuration of the adsorption gas processing apparatus according to the present invention can be variously modified, such as the detailed structure of the microwave irradiation means for irradiating the adsorbent X in the adsorption process with the microwave mw for heating the adsorbed moisture. .

  The gaseous removal object v may be any gaseous object as long as it can be adsorbed and removed by the adsorbent X, and the gas to be treated G including the gaseous removal object v is also included. The gas is not limited to factory exhaust gas, and may be any gas handled in various fields as long as the gas includes the gaseous removal target v.

  The adsorbent X used in the adsorption type gas treatment apparatus of the present invention can be made of various materials such as zeolite and activated carbon, and an adsorbent of an appropriate material is selected according to the type of the gaseous removal object v, etc. do it.

  The adsorption gas processing apparatus according to the present invention can be used in various fields to remove a gaseous removal target contained in various gases.

G Gas to be treated X Adsorbent v Gaseous removal target mw Microwave for adsorption moisture heating 7 Microwave irradiation means 1 Adsorption rotor 3 Adsorption zone H Desorption gas 4 Desorption zone 1m Metal partition wall 1a Adsorbent holding section 2a, 2b Metal wall mw 'Desorption microwave 8 Desorption microwave irradiation means

Claims (6)

An adsorption-type gas treatment apparatus for bringing a gas to be treated into contact with an adsorbent and adsorbing and removing a gaseous removal object in the gas to be treated from the gas to be treated by the adsorbent,
Setting the microwave irradiating means for irradiating a microwave for adsorbed water heated to the adsorbent in the adsorption step a of adsorbing gaseous removal object in the processed gas to the adsorbent,
Provided a breathable adsorption rotor that holds the adsorbent dispersed in the rotor rotation direction,
Each part in the rotor rotation direction of this adsorption rotor is configured to be alternately positioned in the adsorption area that is the ventilation area of the gas to be treated and the desorption area that is the ventilation area of the desorption gas by the rotation of the adsorption rotor,
The microwave irradiation means is disposed in a state in which microwave irradiation is performed from the upstream side or the downstream side in the flow direction of the gas to be processed with respect to the adsorbent of the rotor portion in the adsorption region of the adsorption rotor,
An adsorption-type gas processing apparatus in which the adsorption rotor is internally partitioned into a plurality of adsorbent holding sections in the rotor rotation direction by a metal partition wall . An adsorption-type gas treatment apparatus for bringing a gas to be treated into contact with an adsorbent and adsorbing and removing a gaseous removal object in the gas to be treated from the gas to be treated by the adsorbent,
Provided with a microwave irradiation means for irradiating the adsorbent with microwaves for heating adsorbed moisture in the adsorption step of adsorbing the gaseous removal object in the gas to be treated to the adsorbent;
Provided a breathable adsorption rotor that holds the adsorbent dispersed in the rotor rotation direction,
Each part in the rotor rotation direction of this adsorption rotor is configured to be alternately positioned in the adsorption area that is the ventilation area of the gas to be treated and the desorption area that is the ventilation area of the desorption gas by the rotation of the adsorption rotor,
Adsorption-type gas treatment in which the microwave irradiation means is arranged in a state in which microwave irradiation is performed from the upstream side in the flow direction of the gas to be treated to the adsorbent of the rotor portion in the adsorption zone of the adsorption rotor. apparatus. The adsorption type gas treatment apparatus according to claim 1 or 2, wherein a microwave irradiation region of the microwave irradiation means for the adsorbent is surrounded by a metal wall . A desorption microwave that irradiates the adsorbent with a desorption microwave having a frequency different from that of the adsorption moisture heating microwave in the desorption step of desorbing the gaseous removal object adsorbed in the adsorption step from the adsorbent. The adsorption-type gas treatment apparatus according to any one of claims 1 to 3, further comprising an irradiation unit . 5. The desorption microwave irradiating means is arranged in a state in which microwave irradiation is performed from the upstream side in the flow direction of the desorption gas to the adsorbent of the rotor portion in the desorption region of the adsorption rotor. The adsorption-type gas treatment apparatus as described . The adsorption-type gas treatment apparatus according to any one of claims 1 to 5, wherein the gaseous removal target adsorbed and removed from the gas to be treated by the adsorbent is a volatile organic substance .

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