JPH025853Y2 - - Google Patents

Description

[Detailed explanation of the idea] Industrial applications The present invention relates to a dry dehumidification device.

Background Art One proposed technique is illustrated in FIG. When dehumidifying the gas to be processed G1 such as nitrogen gas, first the gas to be processed G1 is passed through the processing fan 1.
is led from the pipe l1 to the inlet side of the condenser 2. Processed gas G2 cooled and dehumidified by condenser 2
is guided into the treatment zone 4 of the honeycomb rotor 3 which rotates around its axis. The dry gas G3 that has passed through the processing zone 4 and has been dehumidified is supplied to the pipe line l2 by the processing fan 5, further heated by the heater 6, and then supplied to the drying device 7.

On the other hand, a part of the gas G4 of the dry gas G3 guided to the conduit l2 is guided to the regeneration heater 9 via the conduit l4, heated by the regeneration heater 9, and then regenerated into the honeycomb rotor 3. The moisture in the regeneration zone 10 is driven out to the zone 10. The regeneration gas G5 from the regeneration zone 10 is sucked into the regeneration fan 11 and circulated from the pipe l5 to the pipe l1, and is again led to the condenser 2 and cooled, and the moisture contained in the gas is stored in the storage section 12. Condensation is removed.

Problems to be Solved by the Invention In such a proposed technique, by using part of the dry gas G3 as a regeneration gas, the air volume of the dry gas G3 supplied to the pipe l2 can be increased. Decrease. Furthermore, in order to increase the air volume of the drying gas G3, it is necessary to increase the flow rate of the gas to be processed G1 or to increase the flow rate of the gas using the processing fans 1 and 5. If this is done, the dehumidification efficiency by the honeycomb rotor 3 will be reduced, and it will be difficult to obtain dry gas G3 with a dew point temperature of, for example, -20°C or lower.

The purpose of this invention is to solve the above technical problems,
To provide a dry dehumidifying device which improves dehumidifying performance with a simple configuration and efficiently obtains dry gas.

Means for Solving the Problems The present invention has a condenser 15 and a large number of parallel gas passages in the middle of the flow path of the gas to be treated, which is made of an inert gas, and rotates around its axis. A honeycomb rotor 18 is interposed that alternately passes through a treatment zone 16 and a regeneration zone 17 divided into directions, and the gas to be treated is passed through the condenser 15 and the treatment zone 16 of the honeycomb rotor 18 in this order. In a dry dehumidifying device configured to dehumidify gas, the first heating means 30 heats the gas, the first fan 22 guides the gas from the processing zone to the first heating means 30, and the gas from the first heating means 30 a second fan 20 that guides the gas from the dryer 24 to the condenser 15; and a second heating means 19 that heats the gas and guides it to the regeneration zone 17. , a part of the gas from the condenser 15 is transferred to the second heating means 1
9 and exhaust gas from the regeneration zone 17 to the drying device 2.
4 and the second fan 20
A dry dehumidifying device characterized in that the pressure at the outlet of the processing zone 16 is selected to be higher than the pressure at the inlet of the regeneration zone 17 by the first and second fans 22 and 20.

Effect According to the present invention, a part of the gas to be treated is guided to the second heating means 19 before passing through the treatment zone 16 of the honeycomb rotor 18, and the gas heated by the second heating means 19 is heated by the second heating means 19. The honeycomb rotor 1
8 to the regeneration zone 17, and the regeneration zone 17
By guiding and circulating the exhaust gas between the drying device 24 and the second fan 20 by the third fan 23, the dehumidifying performance is improved.
The amount of drying gas obtained from the processing zone 16 of the honeycomb rotor can be increased.

Also, according to the present invention, using a honeycomb rotor,
After the gas is dried in the processing zone 16, the honeycomb rotor 18 is regenerated in the regeneration zone 17, which not only allows continuous drying but also uses a relatively small drying device 24. A large flow rate of drying gas can be obtained for this purpose.

Still further in accordance with the invention, gas from the processing zone 16 is directed from the first fan 22 to the first heating means 30.
The gas is then guided from the second fan 20 to the condenser 15 to be condensed and then guided to the processing zone 16 again to form a closed circuit, in which a part of the gas from the condenser 15 is After being heated by the second heating means 19, the third
The fan 23 is returned to the upstream side of the second fan 20 to form a closed circuit. In this way, all the gas obtained from the outlet side of the processing zone 16 can be used for drying in the drying device 24, and the dehumidification performance is improved as described above. By being able to increase the flow rate of the guided drying gas, it is not necessary to increase the gas flow rate on the inlet side of the second fan 20, or alternatively the first and second fans 22,
There is no need to increase the flow rate of the gas by 20, and this also improves the dehumidification efficiency.
Furthermore, since this closed circuit is formed, an unnecessarily large amount of inert gas is not required.

Furthermore, according to the present invention, the pressure at the outlet of the processing zone 16 is selected to be higher than the pressure at the inlet of the regeneration zone 17 by the first and second fans 22, 20, so that the pressure from the regeneration zone 17 to the regeneration zone 17 is Gas leakage into zone 16 is prevented, which also improves dehumidification efficiency.

Embodiment FIG. 1 is a system diagram of an embodiment of the present invention. The dry dehumidification device 14 according to the present invention basically includes a condenser 1 for cooling and dehumidifying the gas to be processed G1.
5 and processing zone 16 while rotating around the axis.
and a regeneration zone 17, and a regeneration heater 19 for heating part of the gas G3 of the gas to be treated G2 from the condenser 15.

A gas to be processed G1 such as nitrogen gas is transferred from the pipe L1 to the inlet side 15 of the condenser 15 by the processing fan 20.
a, where it is cooled and dehumidified. The gas to be treated G2 from the outlet side 15b of the condenser 15 is guided to the treatment zone 16 of the honeycomb rotor 18 through the pipe L2. By passing through the treatment zone 16,
Dry gas G4 dehumidified to a dew point temperature of -40°C to -50°C is obtained. This drying gas G4 is guided to the pipe line L4 by the processing fan 22, further heated by the regeneration heater 30, and then supplied to the drying device 24. The drying device 24 is filled with a large number of pellets 25 of nylon or other resin before being molded, and a purge gas is supplied through a pipe L5 to pressurize the inside of the device.

On the other hand, a part of the gas to be processed G2 from the condenser 15 is guided to the regeneration heater 19 through the pipe L3 as regeneration gas G3. The regeneration heater 19 is, for example, a steam heater or an electric semiconductor heater, and functions to heat the regeneration gas G3 to, for example, about 120 to 140°C. At this time, the regeneration gas G3 contains some moisture and has a dew point temperature of about 5°C, but by being heated to a high temperature by the regeneration heater 19, the relative humidity becomes low and As a result, the honeycomb rotor 18 can be sufficiently regenerated. The regeneration gas G5 from which moisture has been expelled from the regeneration zone 10 of the honeycomb rotor 3 is transferred to the regeneration fan 23.
is sucked into and circulated from pipe L5 to pipe L1,
The gas is guided again to the gas inlet side of the condenser 15 to be cooled, and the moisture contained in the gas is condensed and removed in the storage section 26.

In this way, a part of the gas to be treated G2 from the condenser 15 is branched from the front side of the treatment zone 16 of the honeycomb rotor 18 to the pipe line 13, and the regeneration heater 19
By heating the gas to 120° C. to 140° C. and using it as the regeneration gas G3, all the gas obtained from the outlet side of the processing zone 16 of the honeycomb rotor 18 can be used as the drying gas G4. Therefore, the air volume in the processing zone 16 increases by an amount corresponding to the air volume of the branched regeneration gas G3. Furthermore, by increasing the air volume of the drying gas G4, there is no need to increase the flow rate of the gas to be processed G1 or to increase the gas flow rate using the processing fans 20 and 22. Therefore, the dehumidification efficiency of the honeycomb rotor 18 can be improved.

According to the inventor's experiments, the honeycomb rotor 18
It was confirmed that the dew point temperature of the dry gas G4 obtained from the processing zone 16 was -40°C to -50°C or lower. In addition, by heating the regeneration gas G3 to 120 to 140°C, for example, when the suction force X of the regeneration fan 23 is 5.4 g/Kg and the dew point temperature of the regeneration gas G3 is 5°C, the relative temperature Compared to the conventional case where the dew point temperature of the regeneration gas is −20° C., it is almost the same as about 1% or less, and it was confirmed that this does not reduce the regeneration ability of the honeycomb rotor 18.

Furthermore, in this embodiment, leakage from the output side of the regeneration zone 17 to the treatment zone 16 of the honeycomb rotor 18 has a large effect on the dehumidification performance, but this can be avoided by arranging the treatment fans 20 and 22 in series to adjust the air volume. This eliminates the effects of leakage. That is, the processing fans 20 and 22 change the pressure in the processing gas outlet pipe L4a to the regeneration gas inlet pipe L4a.
The pressure may be higher than 3a.

In the above embodiment, nitrogen gas was used as the gas to be processed, but other inert gases may be used.

Effects As described above, according to the present invention, a part of the gas is guided to the second heating means 19 before passing through the processing zone 16 of the honeycomb rotor 18, and the gas heated here is passed to the regeneration zone 17. The gas from the regeneration zone 17 is guided through the third fan 23 to the second fan 20 together with the gas from the drying device 24, and then to the condenser 15, thereby improving the dehumidification performance and processing. The amount of drying gas supplied from the zone 16 to the drying device 24 via the first heating means 30 can be increased.

Further, according to the present invention, a closed circuit is formed in connection with the drying device 24 and the regeneration zone 17, so that inert gas is not released into the atmosphere. Therefore, the amount of inert gas consumed can be reduced.

Furthermore, according to the present invention, after gas is dried in the processing zone 16 using a honeycomb rotor, regeneration is performed in the regeneration zone 17. It is possible to do this with

Furthermore, according to the present invention, the pressure at the outlet of the processing zone 16 is selected to be higher than the pressure at the inlet of the regeneration zone 17 by the first and second fans 22, 20, so that the pressure from the regeneration zone 17 to the processing zone is Gas leakage to the processing zone 16 is prevented, thereby reducing the dew point temperature of the gas from the processing zone 16 and improving dehumidification efficiency.

Furthermore, according to the present invention, the third fan 23 is used to reliably guide the heated gas from the second heating means 19 to the regeneration zone 17 to reliably regenerate the honeycomb rotor 18.

[Brief explanation of drawings]

FIG. 1 is a system diagram of an embodiment of the present invention, and FIG. 2 is a system diagram for explaining a certain proposed technique. 1, 5, 20, 22...processing fan, 2, 15
... Condenser, 3,18 ... Honeycomb rotor, 4,
16...Processing zone, 9,19,30...Regeneration heater, 10,17...Regeneration zone, 11,23...
...Regeneration fan, 14...Dry dehumidification device.

Claims (1)

[Claims for Utility Model Registration] A condenser 15 and a large number of parallel gas passages are provided in the middle of a flow path of a gas to be treated consisting of an inert gas, which rotates around an axis and is divided in the circumferential direction of the rotation. A honeycomb rotor 18 that alternately passes through a processing zone 16 and a regeneration zone 17 is interposed, and the gas to be processed is dehumidified by passing through a condenser 15 and the processing zone 16 of the honeycomb rotor 18 in this order. In the dry dehumidification apparatus, the following components are provided: a first heating means 30 for heating gas; a first fan 22 for guiding gas from the processing zone to the first heating means 30; and a first fan 22 for guiding the gas from the first heating means 30 to A drying device 24 filled with dry matter; a second fan 20 that guides gas from the drying device 24 to the condenser 15; a second heating means 19 that heats the gas and guides it to the regeneration zone 17; and a condenser 15. A part of the gas from the second heating means 1
9 and exhaust gas from the regeneration zone 17 to the drying device 2.
4 and the second fan 20
A dry dehumidification device comprising: a pressure at the outlet of the processing zone 16 is selected to be higher than a pressure at the inlet of the regeneration zone 17 by the first and second fans 22, 20.