CN114307539A - Gas treatment device - Google Patents
Gas treatment device Download PDFInfo
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- CN114307539A CN114307539A CN202111428164.0A CN202111428164A CN114307539A CN 114307539 A CN114307539 A CN 114307539A CN 202111428164 A CN202111428164 A CN 202111428164A CN 114307539 A CN114307539 A CN 114307539A
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- 238000011069 regeneration method Methods 0.000 claims abstract description 137
- 230000008929 regeneration Effects 0.000 claims abstract description 135
- 239000007788 liquid Substances 0.000 claims abstract description 34
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 238000001816 cooling Methods 0.000 claims description 12
- 230000007246 mechanism Effects 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 18
- 239000012855 volatile organic compound Substances 0.000 description 70
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- 238000005192 partition Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 4
- OCKPCBLVNKHBMX-UHFFFAOYSA-N butylbenzene Chemical compound CCCCC1=CC=CC=C1 OCKPCBLVNKHBMX-UHFFFAOYSA-N 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000009835 boiling Methods 0.000 description 3
- 239000002274 desiccant Substances 0.000 description 3
- 208000028659 discharge Diseases 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- 229910021536 Zeolite Inorganic materials 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 239000011344 liquid material Substances 0.000 description 2
- 238000011045 prefiltration Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- 239000010457 zeolite Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/06—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
- B01D53/0438—Cooling or heating systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Of Gases By Adsorption (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention provides a gas treatment device capable of preventing liquid from generating on a regeneration outlet side by a simple method. In the gas treatment apparatus of the present invention, the regeneration temperature raising operation of raising the regeneration outlet temperature to 60 to 120 ℃, more preferably to 70 to 120 ℃ is performed by adjusting the rotation speed, bypassing the heated gas, embedding the heating device at the regeneration outlet side, and the like, thereby preventing the generation of liquid at the regeneration outlet.
Description
Technical Field
The present invention relates to a technique for preventing generation of a liquid on a regeneration outlet side of a gas treatment device.
Background
In recent years, air pollution has become a global problem, and VOCs (Volatile Organic Compounds, hereinafter referred to as "VOCs") such as toluene are also one of them, and are often generated in coating processes, printing factories, and the like.
The treatment apparatus (combustion apparatus or recovery apparatus) of VOC-containing exhaust gas has the following problems: if the processing air volume becomes large, not only the equipment becomes extremely large, but also enormous running cost is required. In contrast, the VOC concentration device, which is a preceding stage device of the exhaust gas treatment facility, can concentrate and recover the low-concentration, large-air-volume VOC exhaust gas into a high-concentration, small-air-volume VOC exhaust gas, so that the facility cost and running cost of the entire treatment facility can be significantly reduced, and efficient VOC treatment can be realized.
As one of the VOC concentration devices, a honeycomb rotor-type VOC concentration device selectively adsorbs VOC in exhaust gas and concentrates the VOC. Generally, a VOC adsorption honeycomb rotor carries hydrophobic zeolite, and is regenerated by heating gas at about 200 ℃ (hereinafter, the temperature is referred to as "celsius"), and thus can be used by repeating adsorption and regeneration. However, in the VOC treatment mode (passing a low-concentration, large-volume gas to be treated through the treatment zone of the honeycomb rotor to adsorb VOC contained therein to the honeycomb to form a clean gas, passing a heated gas at about 200 ℃ through the regeneration zone to release the VOC from the honeycomb and convert the VOC into a high-concentration, small-volume concentrated gas), VOC having a high boiling point equal to or higher than the temperature of the heated gas (e.g., 200 ℃ or higher) is not released from the honeycomb rotor in the regeneration zone, and therefore, the VOC is accumulated on the honeycomb rotor with the operation of the VOC concentrating device, and the capacity of the honeycomb rotor is reduced. Therefore, patent document 1 discloses a VOC removal technique for performing an activation treatment in a high-temperature regeneration mode in which high-boiling-point VOCs accumulated on a honeycomb rotor are removed from the honeycomb rotor (in which a heated gas is passed through a regeneration zone at a temperature higher than the regeneration temperature in the VOC treatment mode (for example, 300 ℃), and high-boiling-point V0C accumulated on the honeycomb rotor is removed from the honeycomb rotor).
Patent document 1: utility model registration No. 3219762
However, when the regeneration outlet temperature is low under the condition that the regeneration outlet gas has a high humidity, for example, when the process target gas has a high humidity or when the regeneration gas has a high humidity due to a regeneration cycle, moisture having a high humidity may condense and condense in the casing on the regeneration outlet side. This situation is not limited to VOC concentration devices, and may occur in desiccant dehumidifiers or other gas treatment devices. In the case of the VOC concentration device, when the treatment target gas contains water-soluble high-boiling-point VOCs, the water-soluble high-boiling-point VOCs concentrated and desorbed on the regeneration outlet side are dissolved in the condensed water generated on the regeneration outlet side, and drying and condensation are repeated in accordance with the temperature change of the regeneration outlet gas, whereby the high-boiling-point VOCs are concentrated, and a dark brown to black tarry liquid may be generated. Further, when the VOC which is easily condensed even without depending on moisture is contained in the treatment target gas, it is also conceivable that the easily condensed VOC which is concentrated and desorbed on the regeneration outlet side is condensed and turns into a tar-like liquid.
If the casing on the regeneration outlet side is contaminated due to the generation of tar-like liquid and the liquid flows out, and the honeycomb rotor and peripheral parts are also contaminated, the appearance is not good, the apparatus needs to be cleaned at high cost and labor, the apparatus is corroded, and the honeycomb rotor and the honeycomb parts need to be replaced. Further, when the tarry liquid flows into the honeycomb rotor, performance is degraded and pressure loss is increased. Further, if the tar-like liquid continues to accumulate, there is a possibility that the VOC concentration device may be ignited and burned.
The activation treatment by the high-temperature regeneration mode described in patent document 1 can remove high-boiling-point VOCs accumulated in the honeycomb rotor, but the operation mode of a general VOC concentration device is a VOC treatment mode in which VOCs are adsorbed and removed from the treatment target gas. That is, even if the accumulated high boiling point VOC is periodically desorbed from the honeycomb rotor in the high temperature regeneration mode, if the condition for generating a liquid is satisfied, the liquid is inevitably generated on the regeneration outlet side. In addition, the regeneration temperature in the VOC treatment mode is about 200 ℃, and the regeneration is performed at a temperature of about 300 ℃ in the high-temperature regeneration mode, so that the cost of the heat-resistant seal and the peripheral parts of the honeycomb rotor such as the housing, which can withstand the high temperature, is increased.
In a desiccant dehumidifier or other gas treatment device, high-humidity moisture is condensed on the regeneration outlet side, and an acid or alkali component is dissolved in the condensed water, whereby corrosion of the device and performance degradation of the honeycomb rotor may occur similarly to the VOC concentration device.
Disclosure of Invention
In view of the above circumstances, the present inventors have conducted extensive studies to examine the fundamental cause of the liquid generated on the regeneration outlet side in gas treatment apparatuses such as VOC concentrators and desiccant dehumidifiers. As a result, the inventors have found that if the generation of condensed water, which causes the generation of a liquid, is suppressed, the liquid is not generated, and have completed the present invention. The invention aims to provide a gas treatment device which can prevent liquid from generating on a regeneration outlet side by a simple method.
The gas processing device of the present invention is a gas processing device including a honeycomb rotor, the honeycomb rotor being divided into at least a processing region and a regeneration region, a gas to be processed being passed through the processing region, the gas passed through the processing region being sent to a supply destination or discharged to the atmosphere, a part of the gas to be processed and/or an external gas being passed through a heating means, the gas passed through the heating means being passed through the regeneration region, the gas passed through the regeneration region being sent to a post-stage device or discharged to the atmosphere, the gas processing device being characterized in that the temperature of the gas passed through the regeneration region is 60 to 120 ℃.
Effects of the invention
The gas processing apparatus of the present invention is configured as described above, and therefore, generation of a liquid can be prevented by a simple method without a cost. This enables the honeycomb rotor to be stably maintained in performance for a long period of time, and the frequency of replacement of the honeycomb rotor and the components of the gas processing apparatus to be reduced, thereby reducing the cost.
Drawings
FIG. 1 shows an example of a process for concentrating and recovering VOC.
Fig. 2 is a graph showing a tarry liquid produced in the VOC concentration apparatus operating at a regeneration outlet temperature of 50 ℃.
Fig. 3 is a view showing a state of a regeneration outlet side in which the same discharge treatment is performed at the same site as the VOC concentration device of fig. 2 by another VOC concentration device and the device is operated at a regeneration outlet temperature of 100 ℃.
Fig. 4 is a graph showing a normal regeneration operation and a regeneration outlet temperature-rising operation with 4 kinds of VOCs (xylene, ethylbenzene, toluene, butylbenzene) in the VOC concentration device, and comparing VOC removal rates.
Description of the reference numerals:
1-honeycomb rotor, 2-treatment zone, 3-regeneration zone, 4-cooling zone, 5-prefilter, 6-treatment fan, 7-heating mechanism, 8-regeneration fan and 9-partition plate.
Detailed Description
FIG. 1 shows an example of a process for concentrating and recovering VOC. The honeycomb rotor 1 is divided into at least a treatment zone 2 and a regeneration zone 3 by a partition plate 9. The partition 9 surrounds the regeneration zone 3 (hereinafter, also referred to as "V zone") by a pair of straight partitions and arc partitions in a V shape. And is covered by a casing (not shown) so that the gas in each zone is delivered through each gas supply pipe. The honeycomb rotor 1 is formed by molding inorganic fiber paper into a honeycomb shape and supporting an adsorbent such as hydrophobic zeolite thereon, and the honeycomb rotor 1 is rotated by a gear motor or the like (not shown), thereby continuously adsorbing, removing, concentrating, and desorbing VOC.
The VOC in the gas to be treated having passed through the pre-filter 5 is adsorbed and removed when passing through the treatment region 2 of the honeycomb rotor 1. The gas having passed through the treatment region is sent to a supply destination by a treatment fan 6 or discharged to the atmosphere. When the honeycomb having adsorbed the VOC is transferred to the regeneration zone 3, the adsorbed VOC is concentrated and desorbed 5 to 15 times by the regeneration gas heated by the heating means 7 at about 200 ℃ of the air flow rate of 1/5 to 1/15 for treating the air flow rate, and is transported to a subsequent device (not shown) such as a combustion treatment device or discharged to the atmosphere by the regeneration fan 8. The honeycomb having passed through the regeneration zone 3 moves to the cooling zone 4, is cooled, and is transferred again to the treatment zone 2. The cooling zone 4 is supplied with a gas including at least one of a part of the gas to be processed, an external gas, and a gas passing through the processing zone 2. The gas having passed through the cooling zone 4 is heated by a heating means 7 (a regenerative heater or the like) and is sent to the regeneration zone 3 as a regeneration gas.
Further, although the VOC concentrating apparatus including the treatment zone 2, the regeneration zone 3, and the cooling zone 4 is exemplified, only the treatment zone and the regeneration zone may be provided without providing the cooling zone, or other zones may be provided. The gas to be sent as the regeneration gas to the regeneration zone 3 may be a part of the gas to be treated and/or an external gas.
The regeneration operation is performed such that the treatment inlet temperature is, for example, 20 to 30 ℃ and the regeneration outlet temperature is +20 to 30 ℃ (usually 40 to 60 ℃) to the normal treatment inlet temperature (hereinafter, referred to as "normal regeneration operation"). However, at this regeneration outlet temperature, as described above, moisture may condense at the regeneration outlet side to generate a liquid substance. Therefore, in the present invention, the regeneration outlet temperature is further increased to 60 to 120 ℃, more preferably 70 to 120 ℃ in order to prevent the generation of liquid matter (hereinafter referred to as "regeneration outlet temperature increasing operation"). The operation is performed so as to fall within the regeneration outlet temperature range (60 to 120 ℃) regardless of the conditions of the regeneration inlet temperature, the air volume, the composition of the gas to be treated, and the like.
In patent document 1, the operation in the "high-temperature regeneration mode" is performed such that the regeneration outlet temperature is lower than the regeneration inlet temperature by 50 to 150 ℃. If the honeycomb rotor is operated so that the regeneration outlet temperature is increased to 60 to 120 ℃, more preferably 70 to 120 ℃ as in the present invention, the performance of the honeycomb rotor is deteriorated, and therefore, those skilled in the art do not think that the honeycomb rotor is operated in the range of +20 to 30 ℃ with respect to the normal treatment inlet temperature, and the idea of intentionally increasing the regeneration outlet temperature as in the present invention is considered. Further, although there is a method of increasing the regeneration outlet temperature by adjusting the rotation speed, if the rotation speed is deviated from the optimum rotation speed which is the rotation speed with the highest removal performance, the deviation acts in a direction in which the performance of the honeycomb rotor is deteriorated, and therefore, the deviation is not intentionally caused by a person skilled in the art.
As a result of an investigation and an intensive study on the cause of the occurrence of the tarry liquid that occurs on the regeneration outlet side, the inventors of the present invention have found that condensation of water occurs when the regeneration outlet temperature is as low as 40 to 60 ℃, which causes the occurrence of the tarry liquid, and that the occurrence of the liquid is reduced when the regeneration temperature is intentionally increased to 60 to 120 ℃, which is a temperature range in which no condensed water is generated, and more preferably 70 to 120 ℃.
The absolute humidity in air at a relative humidity of 100% RH increases exponentially with increasing temperature. For example, 49g/kg (DA) at 40 ℃ but 152g/kg (DA) at 60 ℃ is increased to about 3 times the temperature of 40 ℃ and 277g/kg (DA) at 70 ℃ is increased to about 6 times the temperature of 40 ℃. In a gas processing apparatus for processing a large amount of air, a drift current is generated in a portion of a V region on a regeneration outlet side close to an inner peripheral portion of a honeycomb rotor or an outer peripheral wall portion of a casing, or a liquid is easily generated and adhered due to a temperature drop caused by an influence of an external air condition around the apparatus. Therefore, in the regeneration outlet temperature increasing operation of the present invention, the regeneration outlet temperature is increased to at least 60 ℃ or higher, and more preferably to 70 ℃ or higher. On the other hand, if the regeneration outlet temperature becomes too high, the performance of the honeycomb rotor deteriorates, so the temperature is limited to 120 ℃.
Fig. 2 is a tarry liquid produced in the housing on the regeneration outlet side of the VOC concentration device operating at a regeneration outlet temperature of 50 ℃ (typical regeneration operation). The portion surrounded by the ellipse is a portion to which the gas having the highest regeneration outlet temperature is blown immediately before the transfer from the regeneration zone to the cooling zone, and therefore, no tarry liquid adheres. From this, it can be seen that the effect of preventing the generation of the tarry liquid can be obtained by increasing the regeneration outlet temperature.
On the other hand, fig. 3 shows a state in the housing on the regeneration outlet side in which the same discharge treatment is performed by another VOC concentration device at the same site as the VOC concentration device shown in fig. 2 and the device is operated at a regeneration outlet temperature of 100 ℃ (regeneration outlet temperature increasing operation). It was found that, although the same discharge treatment was performed on the same site, the regeneration outlet temperature was increased, and no tarry liquid was produced at all. In fig. 3, rust, dust, and the like appear to be slightly attached to the case, and are not tarry liquid substances.
The following method can be mentioned as a method for performing the regeneration outlet temperature increasing operation of the present invention. The simplest method is adjustment based on the number of revolutions. When the rotation speed is slowly rotated below the optimum rotation speed in the normal regeneration operation, the regeneration heat is transferred to the entire rotor, and the regeneration outlet temperature rises.
Then, by bypassing a part of the regeneration inlet gas having passed through the heating means 7 to the regeneration outlet side, the high-temperature heating gas and the regeneration outlet gas can be mixed, and the regeneration outlet temperature can be increased. As a result, the concentration of VOC to be concentrated is reduced, which leads to a reduction in removal performance and also costs for bypassing, and thus those skilled in the art will not realize such an idea.
Further, a heating device such as a plate heater may be embedded in a wall surface or the like defining a V-zone (including a casing) on the regeneration outlet side, thereby indirectly heating the regeneration outlet gas and raising the regeneration outlet temperature. It is not thought by those skilled in the art that the regeneration outlet temperature is increased to deteriorate the performance, for example, by providing a plate-shaped heater which requires a high cost. Further, the regeneration outlet gas may be heat-exchanged with the burned exhaust gas as a heat source.
In summary, as described above, increasing the regeneration outlet temperature means that the honeycomb cooling effect in the cooling zone is reduced, and the performance of the honeycomb rotor is reduced, and therefore those skilled in the art will not normally perform such an operation.
Fig. 4 is a graph showing a normal regeneration operation and a regeneration outlet temperature-rising operation with 4 kinds of VOCs (xylene, ethylbenzene, toluene, butylbenzene) in the VOC concentration device, and comparing VOC removal rates. The horizontal axis represents the treatment inlet VOC concentration, and the vertical axis represents the VOC removal rate. Compared with the common regeneration operation, the removal rate is reduced by 0.5-1 percentage point on the whole in the regeneration outlet temperature rising operation. In general, the high-boiling point VOCs contained in the tar-like liquid mostly contain VOCs having both polarity and molecular structure larger than these 4 VOCs, and thus it is expected that the actual performance reduction is smaller than these 4 VOCs.
Here, when the regeneration outlet temperature raising operation is performed so that the regeneration outlet temperature becomes 120 ℃, the VOC removal rate is reduced by 2 to 5 percentage points, although it depends on the kind of VOC, so the upper limit of the regeneration outlet temperature raising operation is set to 120 ℃. Further, if the regeneration outlet temperature is too high, the temperature may exceed the heat-resistant temperature of the regeneration fan 8, and therefore the upper limit is preferably set to 120 ℃.
If the regeneration outlet temperature is increased, the performance will be reduced, but the performance will not be significantly impaired. In the case of a VOC concentrating device, high-boiling-point VOCs gradually accumulate on the honeycomb rotor in the long run, and the performance gradually decreases in the near future. In addition, a tar-like liquid is generated during normal regeneration operation, the apparatus and the honeycomb rotor are contaminated, the performance is reduced, the costs for corrosion, cleaning, replacement, etc. of the apparatus are increased, and there is a risk of ignition and burnout. On the other hand, by performing the regeneration outlet temperature increasing operation, although the initial performance is slightly deteriorated, a tarry liquid is not generated, the frequency of cleaning and replacement is also reduced, and the cost is reduced compared to the normal regeneration operation. Therefore, in the long run, the regeneration outlet temperature-raising operation can stably maintain the performance, and there is a cost advantage.
In particular, in the method of increasing the regeneration outlet temperature by adjusting the rotation speed, the adjustment can be easily performed by the existing apparatus without newly installing equipment. In other methods, the cost is not greatly increased. The above-described method of raising the regeneration outlet temperature (adjustment of the rotation speed, bypass of the heated gas, and burying of the heating device in the regeneration outlet side) may be used alone or in combination.
In preparation for the case where a liquid substance is generated during normal regeneration operation, a prevention mechanism (such as a weir) for preventing the liquid substance from flowing into the honeycomb rotor may be provided, a drainage device may be provided on the regeneration outlet side, or the regeneration inlet side may be set higher than the regeneration outlet side by inclining the casing for housing the honeycomb rotor. Further, the humidity of the process target gas and/or the regeneration gas may be reduced such as by dehumidifying the process target gas and/or the regeneration gas so that the regeneration outlet gas does not become high in humidity.
Industrial applicability
According to the gas treatment apparatus of the present invention, since the generation of the liquid material at the regeneration outlet can be prevented by a simple method, the gas treatment apparatus can be applied to all objects that may generate the liquid material by condensing the regeneration outlet gas regardless of the type of the gas such as VOC or dehumidification.
Claims (7)
1. A gas processing apparatus including a honeycomb rotor, the honeycomb rotor being divided into at least a processing region and a regeneration region, a gas to be processed being passed through the processing region, the gas having passed through the processing region being sent to a supply destination or being discharged to the atmosphere, a part of the gas to be processed and/or an external gas being led to a heating means, the gas having passed through the heating means being passed through the regeneration region, the gas having passed through the regeneration region being sent to a subsequent device or being discharged to the atmosphere, the gas processing apparatus being characterized in that,
the temperature of the gas passing through the regeneration zone is 60-120 ℃.
2. The gas processing apparatus according to claim 1,
a cooling zone is also provided between the treatment zone and the regeneration zone.
3. The gas processing apparatus according to claim 1 or 2,
the gas including at least one of a part of the processing target gas, an external gas, and a gas having passed through the processing region is passed through the cooling region, and the gas having passed through the cooling region is passed through the heating means.
4. The gas processing device according to any one of claims 1 to 3,
adjusting the rotational speed of the honeycomb rotor, thereby adjusting the temperature of the gas that has passed through the regeneration zone.
5. The gas processing device according to any one of claims 1 to 4,
the temperature of the gas passing through the regeneration zone is adjusted by bypassing a part of the gas passing through the heating means and passing it through the outlet side of the regeneration zone.
6. The gas processing device according to any one of claims 1 to 5,
a heating device is embedded in a V-zone dividing the outlet side of the regeneration zone, thereby adjusting the temperature of the gas passing through the regeneration zone.
7. The gas processing device according to any one of claims 1 to 6,
a prevention mechanism is provided for preventing the liquid generated on the outlet side of the regeneration zone from flowing out to the honeycomb rotor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021-178469 | 2021-11-01 | ||
| JP2021178469A JP7053079B1 (en) | 2021-11-01 | 2021-11-01 | Gas processing equipment |
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| CN114307539A true CN114307539A (en) | 2022-04-12 |
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| CN202122943912.0U Active CN217449550U (en) | 2021-11-01 | 2021-11-26 | Gas treatment device |
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| JP2023067337A (en) | 2023-05-16 |
| CN217449550U (en) | 2022-09-20 |
| KR20230063281A (en) | 2023-05-09 |
| JP7053079B1 (en) | 2022-04-12 |
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