KR100597863B1 - Rotary type gas adsorption concentration device - Google Patents

Abstract

(Problem) It is an object of the present invention to provide a rotary gas adsorption concentrating device capable of using high temperature desorption air capable of desorbing most VOCs.

(Solution means) The sealing material 1 was made of a material with high inorganic heat resistance, and the groove 4 was formed in the contact surface with the honeycomb rotor 3 of this sealing material 1. An air storage place is formed by the space inside the groove 4, whereby the thermal conductivity becomes small, so that the heat of the desorption zone 14 is less likely to be transferred to the adsorption zone. As a result, even if the temperature of the desorption air is increased, the temperature of the adsorption zone does not increase, so that the adsorption performance is maintained.

Description

ROTARY TYPE GAS ADSORPTION CONCENTRATION DEVICE}

1 is a cross-sectional view showing an embodiment of a rotary gas adsorption concentration device of the present invention.

2 is a perspective view showing an example of a sealing material used in the present invention.

Figure 3 is a perspective view showing an embodiment of a rotary gas adsorption concentration device of the present invention.

4 is a perspective view showing an example of an arc-shaped sealing material used in the present invention.

(Explanation of the sign)

1: seal material 2: bottom

3: honeycomb rotor 4: home

5,6: Chamfer 7: Spring

8,10,11: Nut 9: Bolt

16: L metal member 13: Casing

14: Desorption zone 15: Seal material

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary gas adsorption concentrating device, and in particular, adsorption concentration treatment of a gas containing high boiling organic gas (hereinafter referred to as VOC).

Rotary gas adsorption concentrators are used to concentrate VOCs in air. That is, a large amount of VOC which is a solvent of a coating material or an ink is discharge | released in a painting factory and a printing factory, and in order to burn and injure these VOC, it is necessary to concentrate to the density | concentration to which VOC self-burns.

To this end, a rotary gas adsorption concentrating device using a honeycomb-shaped rotor carrying an adsorbent is rapidly spreading. The rotary gas adsorption concentrator uses a honeycomb rotor carrying an adsorbent as described above, divides the honeycomb rotor into at least an adsorption zone and a desorption zone, and flows the treated air containing VOC in the adsorption zone, and desorbs. The zone allows hot desorption air to flow to desorb the VOC adsorbed on the honeycomb rotor.

Then, what was disclosed in Japanese Utility Model Registration No. 2536860 was developed as a sealing means for distinguishing the adsorption zone and the desorption zone. On the other hand, semiconductor factories and the like use many kinds of VOCs, and some of them have boiling points exceeding 200 ° C. Moreover, there exist some VOCs superposed | polymerized at the time of adsorb | sucking to a honeycomb-shaped rotor, and these things raise a boiling point by superposition | polymerization.

Therefore, in the case where the honeycomb rotor is desorbed by sending desorption air at about 160 to 180 ° C. to the desorption zone, the above-mentioned high boiling point VOC gradually accumulates in the honeycomb rotor.

On the other hand, the technique of Unexamined-Japanese-Patent No. 2001-278551 was developed so that desorption air of high temperature could be sent. According to this technique, since the sealing material which ensures the airtight between each zone is comprised by nonflammable materials, such as graphite, desorption air of 300 degreeC or more can be sent, and high boiling point VOC can also be desorbed.

However, in the above technique, the airtightness between the zones is ensured by a bar-shaped sealing material made of graphite or the like. For this reason, there exists a problem that the temperature of a sealing material is gradually raised by desorption air and heat of desorption air is also transmitted to an adsorption zone.

The present invention is to provide a rotary gas adsorption concentrating device that is difficult to transfer the heat of the desorption air to the adsorption zone by using a high temperature desorption air of 300 ℃ or more.

In order to solve the above problems, the present invention forms a groove in the contact surface with the honeycomb rotor of the sealing material and forms an air storage place by the space inside the groove, so that the thermal conductivity becomes small and the heat of the desorption zone is reduced. It is rarely delivered to this adsorption zone.

The invention described in claim 1 has a honeycomb rotor that is rotationally driven and supports an adsorbent, and has a sealing material that divides the honeycomb rotor into at least a desorption zone and an adsorption zone, and the seal material is made of a nonflammable material. In addition, a groove is formed in the contact surface with the honeycomb-shaped rotor, and the heat insulating property is increased by the space inside the groove, thereby preventing the heat of the desorption air from being transferred to the adsorption zone.

(Example)

Embodiments of the rotary gas adsorption concentrating device of the present invention will be described in detail with reference to the drawings.

1 is a cross-sectional view of a seal member and its attachment portion of a rotary gas adsorption concentrating device according to the present invention. Here, reference numeral 1 denotes a sealing material, in which a thin piece of aggregated mica, or mica, is laminated and laminated with a binder such as silicone resin.

Moreover, the groove | channel 4 is formed in the bottom surface 2 of the sealing material 1, ie, the surface which slides in contact with the end surface of the honeycomb-like rotor 3. And the chamfers 5 and 6 are formed in the edge of the bottom face 2 and the side surface of the sealing material 1. These chamfers 5 and 6 are formed on the upstream side with respect to the moving direction (arrow direction) of the honeycomb rotor 3.

7 is a spring, and the sealing material 1 is pressed by the upper surface of the honeycomb rotor 3 by this. This pressing force is adjustable by the nut 8. The nut 8 is screwed to the bolt 9. The head of the bolt 9 is located in the groove 4 and penetrates the sealing material 1.

The bolt 9 is fixed to the L metal member 16 by a pair of nuts 10 and 11, and the L metal member 16 is attached to the casing 13 by the bolt 12. That is, the sealing material 1 is attached to the casing 13 and is elastically pressed against the honeycomb-like rotor 3, and rises upward when a force resisting the spring 7 is received.

As shown in Fig. 2, the seal member 1 is thin and long, and is arranged in pairs and V-shape so as to surround the desorption zone 14 of the honeycomb rotor 3 as shown in Fig. 3, and also the honeycomb rotor 3 A circular arc seal member 15 is disposed along the outer periphery. That is, the fan-shaped desorption zone 14 is formed by the pair of sealing material 1 and the circular arc-shaped sealing material 15.

The rotary gas adsorption concentrating device of the present invention having such a configuration sends the air to be treated to the processing zone of the honeycomb rotor 3 while rotating the honeycomb rotor 3. Here, the VOC contained in the air to be treated is adsorbed by the adsorbent of the honeycomb rotor 3. The desorption air of about 180 ° C. is sent to the desorption zone to desorb the VOC adsorbed on the adsorbent.

When the amount of the desorbed air is set to 1/10 of the amount of the air to be treated, the VOC concentration is concentrated to 10 times the concentration of the air to be treated in the desorbed air. Desorption air passes through the desorption zone 14, but since the sealing material 1 is in contact with the end face of the honeycomb-like rotor 3, there is no leakage from the desorption zone 14. In particular, the groove 4 is formed in the bottom face of the sealing material 1, and the leak is further prevented by the labyrinth effect.

In addition, since the storage place of air by the groove | channel 4 is formed in the sealing material 1, and thermal conductivity becomes small, it is hard to transfer the heat of the desorption zone 14 to another place. As a result, the heat of the desorption zone 14 is less likely to be transferred to the air to be treated, so that the adsorption performance is not lowered.

In addition, when the end surface of the honeycomb-like rotor 3 is twisted or the rotating shaft is inclined, as shown in FIG. 1, the sealing material 1 moves up and down. That is, since the sealing material 1 is slidable up and down with respect to the bolt 9, it raises in resistance to the elastic force of the spring 7, or descends by the elastic force of the spring 7. As shown in FIG. The pressing force of the spring 7 can be adjusted by the nut 8 screwed to the bolt 9.

In the lower surface of the seal member 1, chamfers 5 and 6 are formed on the upstream side with respect to the moving direction of the honeycomb rotor 3, whereby the aggregated mica constituting the seal member 1 is peeled off. Can be prevented.

When the high boiling point is contained in the VOC contained in the to-be-processed air, it will not fully desorb in 180 degreeC desorption air, and VOC will accumulate gradually in the honeycomb rotor 3.

When the VOC is deposited to some extent in the honeycomb rotor 3, the desorption air at about 300 ° C is sent to the desorption zone 14 to desorb the accumulated high boiling point VOC to restore the honeycomb rotor 3. Since most VOCs are vaporized at 300 degreeC, the honeycomb rotor 3 is almost completely revived.

At this time, since the sealing material 1 has high heat insulation as mentioned above, even if it sends a desorption air of 300 degreeC high temperature to the desorption zone 14, there is no problem. Moreover, since the sealing material 1 is an aggregated mica and even if it uses silicon as a binder, since heat resistance is about 550 degreeC, there is no problem.

The rotary gas adsorption concentrating device of the present invention has a sealing material for dividing the honeycomb rotor into at least a desorption zone and an adsorption zone as described above, and the sealing material is made of a non-combustible material and forms a groove on the contact surface with the honeycomb rotor. Therefore, the sealing material has high heat insulating properties, and even though high-temperature desorption air flows, the heat is less likely to be transferred to other parts, so that the adsorption performance can be maintained high.

In addition, the rotary gas adsorption concentrating device of the present invention generates a labyrinth effect by the groove of the contact surface with the honeycomb rotor, and has a high sealing effect by the sealing material.                     

In addition, since the rotary gas adsorption concentrating device of the present invention uses aggregated mica as the sealing material, the heat resistance is high, and the linear expansion rate of the aggregated mica is similar to iron, so that the probability of deformation occurs even when the temperature changes from high temperature to low temperature is small. Long life.

Claims (4)

It has a honeycomb rotor that is rotationally driven and supports an adsorbent, and has a seal material that divides the honeycomb rotor into at least a desorption zone and an adsorption zone, and the seal material is made of a non-combustible material and is provided on the contact surface with the honeycomb rotor. Rotary gas adsorption concentration device, characterized in that the groove is formed. The rotary gas adsorption concentrating device according to claim 1, wherein the sealing material is made of aggregated mica. The rotary gas adsorption concentrating device according to claim 2, wherein the edges of the contact surfaces of the seal material with the honeycomb rotors are chamfered. The rotary gas adsorption concentrating device according to claim 1, wherein the seal member is elastically pressed against the honeycomb rotor by a spring.

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