CN211098283U

CN211098283U - Concentration system

Info

Publication number: CN211098283U
Application number: CN201920617070.XU
Authority: CN
Inventors: 水谷晶德; 河野大树
Original assignee: Toyobo Co Ltd
Current assignee: Dongyang Textile Mc Co ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-07-28
Anticipated expiration: 2029-04-30

Abstract

The utility model provides a concentrated system, it is concentrated this pending gas when detaching the organic solvent that contains in the pending gas, and this system includes following enrichment facility: at least one adsorption rotor having a plurality of adsorption elements having air flow paths and a plurality of partitions having no air flow paths arranged alternately and having at least one opening on an inner peripheral side; the adsorption rotor is divided into an adsorption region and a desorption region, wherein the adsorption region is a region for ventilating gas to be treated from the outer peripheral side to the inner peripheral side of the adsorption rotor to the adsorption element and adsorbing the substance to be treated; the desorption region is a region in which heated gas having a smaller air volume than the gas to be treated is introduced from the inner circumferential side to the outer circumferential side of the adsorption rotor to the adsorption element, and the adsorbed substance to be treated is desorbed, and the concentrated gas in which the substance to be treated is concentrated is discharged from the adsorption rotor; the adsorption rotor is rotated in a circumferential direction to move the adsorption element between the adsorption area and the desorption area.

Description

Concentration system

Technical Field

The utility model belongs to the technical field of concentrated system, it adsorbs pending gas that contains organic solvent to this adsorbed organic solvent of concentration.

Background

Conventionally, as a method of treating a large flow rate of liquid to be treated containing a low concentration of substance to be treated, there is an adsorption concentration treatment method. In this treatment method, a large volume of fluid to be treated is blown into an adsorption region of an adsorbent that continuously rotates, and a substance to be treated contained in the fluid to be treated is adsorbed and removed. On the other hand, a small amount of heating fluid is introduced from the adsorption region into which the fluid to be treated is introduced to the other desorption region, which is partially independent, and the substance to be treated contained in the fluid to be treated having a large air volume is moved to the heating fluid having a small air volume. In this way, a so-called concentrated fluid containing a small amount of air with a high concentration of the substance to be treated is generated, and the concentrated fluid is treated 2 times separately, whereby the total treatment cost can be reduced.

As an improvement thereof, patent document 1 describes an adsorption treatment apparatus having a practical size and capable of increasing a treatment flow rate of a fluid to be treated. However, no comprehensive and efficient concentration system for treating a gas to be treated containing an organic solvent is disclosed in the present situation.

[ Prior art documents ]

[ patent document ]

Patent document 1: international publication No. 2016189958

SUMMERY OF THE UTILITY MODEL

The utility model discloses the problem that will solve

Concentration systems are sought that more efficiently process gases to be treated that contain organic solvents.

Technical scheme for solving problems

The present invention relates to the structure described below.

[1] A concentration system, wherein a concentration device is connected to at least one of the following devices (A) to (N):

(A) a pre-adsorption unit,

(B) A reel type filter unit,

(C) A medium performance filter unit,

(D) A gas cooler,

(E) A gas heater,

(F) A catalyst oxidation device,

(G) A direct combustion device,

(H) A heat accumulating type combustion device,

(I) A water vapor desorption type solvent recovery device,

(J) A nitrogen desorption type solvent recovery device,

(K) A condensing device,

(M) a buffer device,

(N) a concentration device having the same structure as the concentration device;

the concentration device is a concentration device which removes the organic solvent contained in the gas to be treated and simultaneously concentrates the gas to be treated,

the concentration device has at least one adsorption rotor in which a plurality of adsorption elements having an air flow path and a plurality of partitions having no air flow path are alternately arranged in a hollow cylindrical shape and which has at least one opening portion on an inner circumferential side,

the adsorption rotor is divided into an adsorption region and a desorption region, wherein the adsorption region is a region for ventilating gas to be treated from the outer peripheral side to the inner peripheral side of the adsorption rotor to the adsorption element and adsorbing the substance to be treated; the desorption region is a region in which the heated gas having a smaller air volume than the gas to be treated is introduced from the inner circumferential side to the outer circumferential side of the adsorption rotor to the adsorption element to desorb the adsorbed substance to be treated, and the concentrated gas in which the substance to be treated is concentrated is discharged from the adsorption rotor,

the adsorption rotor is rotated in a circumferential direction to move the adsorption element between the adsorption region and the desorption region.

[2] The concentration system according to [1], wherein an inner peripheral side flow passage forming member and an outer peripheral side flow passage forming member are provided on an inner peripheral side and an outer peripheral side of the adsorption rotor so as to be opposed to each other, and a part of the plurality of adsorption elements which rotate with the rotation of the adsorption rotor are communicated in an airtight or liquid-tight manner, thereby distinguishing the adsorption region and the desorption region.

[3] According to the concentration system described in [2], the partition portion is provided with sealing members on the outer peripheral side and the inner peripheral side of the adsorption rotor, and the sealing members are in contact with the inner peripheral flow passage forming member and the outer peripheral flow passage forming member while sliding with the rotation of the adsorption rotor, thereby maintaining the gas-tight or liquid-tight property.

[4] The concentration system according to any one of [1] to [3], wherein the adsorption element has a honeycomb structure.

Advantageous effects

According to the present invention, in the concentration device, there is an adsorption rotor having an adsorption region and a desorption region, and the adsorption rotor is rotated in the circumferential direction, whereby the adsorption region and the desorption region are moved by the adsorption element. Further, the gas to be treated is introduced from the outer peripheral side to the inner peripheral side of the adsorption rotor to the adsorption element and the substance to be treated is adsorbed, and the heated gas having a smaller air volume than the gas to be treated is introduced from the inner peripheral side to the outer peripheral side of the adsorption rotor to the adsorption element and the adsorbed substance to be treated is desorbed, and the concentrated gas in which the substance to be treated is concentrated is discharged from the adsorption rotor. Thereby, a concentration device and a concentration system for effectively treating the gas to be treated containing the organic solvent can be provided.

Further, the concentration apparatus is connected to at least one of the apparatuses (a) to (N) and, when the concentration system is used, the gas to be treated containing the organic solvent is adsorbed to the adsorbent and discharged as clean air.

Drawings

Fig. 1 is a cross-sectional view of a thickening apparatus.

Fig. 2 is a bottom view of the thickening apparatus.

Fig. 3 is a detailed view of the desorption region.

Fig. 4 is a diagram showing a honeycomb block.

Fig. 5 is a diagram showing a concentration system composed of a pre-adsorption unit + a concentration device.

Fig. 6 is a diagram showing a concentration system composed of a drum filter + a medium performance filter + a pre-adsorption unit + a concentration device.

Fig. 7 is a diagram showing a concentration system composed of a gas cooler + a gas heater + a concentration device.

Fig. 8 is a diagram showing a concentration system composed of a concentration device + a catalyst combustion device.

Fig. 9 is a diagram showing a concentration system composed of a concentration device + a catalyst combustion device.

Fig. 10 is a view showing a concentration system consisting of a concentration device + regenerative combustion device.

Fig. 11 is a diagram showing a concentration system composed of a concentration device and a steam desorption type solvent recovery device.

Fig. 12 is a diagram showing a concentration system composed of a concentration device and a nitrogen desorption type solvent recovery device.

Fig. 13 is a diagram showing a concentration system composed of a concentration device + condensation.

Fig. 14 is a diagram showing a concentration system composed of a concentration device + a buffer device.

FIG. 15 is a diagram showing a concentration system comprising a concentration apparatus and a concentration apparatus.

Fig. 16 is a view showing a concentration apparatus having a plurality of adsorption rotors.

(reference numerals in FIGS. 1 to 4)

1a treatment chamber, 2a first channel forming member, 2a, 11a opening, 3a motor,

4 inner peripheral side flow passage forming member, 4a inner peripheral side open end, 4b, 4c inner peripheral side curved surface,

5 an outer peripheral side channel-forming member, 5a an outer peripheral side open end, 5b, 5c an outer peripheral side curved surface,

6a support member, 10 a hollow disk, 11a first hollow disk, 12 a second hollow disk, 20 a partition part,

21 main body part, 22 seal part, 23 inner peripheral side seal part, 23a, 24a seal face,

24 outer peripheral side seal portion, 30 suction member, 30a corrugated sheet, 30b sheet,

30c honeycomb-shaped blocks, 40 sealing members, 41 inner side sealing members,

42 outer seal member, 90 adsorption rotor, 90a cylindrical hole, 100 concentrator,

C cylinder shaft, F1 gas to be treated, F2 clean air, F3 heated gas, F4 concentrated gas,

R outer radius, R1 desorption region, R2 adsorption region, S space portion, R inner radius

(Note of FIG. 5)

500 concentration apparatus, 501 treatment gas, 502 pre-adsorption unit, 503 adsorbent-filled container,

504 blower, 505 concentration device to-be-treated gas

(Note of FIG. 6)

600 concentration apparatus, 601 process gas, 602 automatic take-up reel filter unit,

603 medium performance filter unit, 604 pre-adsorption unit, 605 blower,

606 concentrating the gas to be treated in the device, 602A reel filter, 602B unreeling reel, 602C filtering material,

602D take-up reel, 602E mandrel, 602F support grid, 603A medium performance filter,

604A adsorbent filling container

(Note of FIG. 7)

700 concentration device, 701 gas cooler, 701A cooling water inlet, 701B cooling water outlet, 701C plate,

701D cooling water piping, 701E process gas inlet, 701F process gas outlet, 702 gas heater,

702A steam inlet, 702B steam outlet, 702C sheet, 702D steam piping,

702E process gas inlet, 702F process gas outlet, 703 process gas, 704 blower,

705 gas cooler gas heater connection line, 706 gas to be treated of concentration device

(Note of FIG. 8)

800 concentration device, 801 concentration device, gas to be treated, 802 blower, 803 concentrated gas, 804 blower,

805 first heat exchanger, 806 second heat exchanger, 807 blower, 808 heating gas supply source, 809 heating gas,

810 catalyst combustion device, 811 catalyst, 812 burner, 813 combustion source (L PG + air), 814 harmless air

(Note of FIG. 9)

900 concentration device, 901 concentration device, 902 blower, 903 concentrated gas, 904 blower,

905 first heat exchanger, 906 second heat exchanger, 907 blower, 908 heating gas supply source, 909 heating gas,

910 direct combustion device, 911 burner, 912 combustion source (L PG + air), 913 harmless air

(Note of FIG. 10)

1000 concentration device, 1001 concentration device to-be-treated gas, 1002 blower, 1003 concentrated gas, 1004 blower,

1005 heat accumulating type combustion device, 1006 heat accumulating material, 1007 concentrated gas supply line, 1008 harmless air line,

1009 blower, 1010 harmless air, 1011 cleaning circuit, 1012 combustion/discharge/cleaning switching valve,

1013 burner, 1014 combustion source (L PG + air), 1015 heating gas supply source, 1016 blower,

1017 gas heater, 1017A heating gas supply inlet, 1017B heating gas outlet, 1017C steam inlet,

1017D steam outlet, 1017E plate, 1017F steam pipe, 1018 heated gas

(Note of FIG. 11)

1100 concentration device, 1101 concentration device to-be-treated gas, 1102 blower, 1103 concentrated gas,

1104 solvent recovery device, 1105 blower, 1106 concentrated gas supply line, 1107 adsorption tank A,

1108 adsorption tanks B, 1109A, 1109B, 1110 adsorption tanks A automatic air doors,

1111 adsorption tank B automatic upper air door, 1112 adsorption tank A automatic lower air door,

1113 adsorption tank B automatic lower air door, 1114 adsorption tank desorption outlet gas, 1115 condenser,

1115A condensate, 1115B cooling water inlet, 1115C cooling water outlet, 1117 separator, 1117A condensate,

1117B condensate regasifying gas, 1117C condensate discharge line, 1118 condensate regasifying gas line,

1119 steam supply, 1120 steam line, 1121 steam valve A, 1122 steam valve B,

1123 gas cooler, 1123A cooling water inlet, 1123B cooling water outlet, 1123C plate, and,

1123D cooling water pipe, 1123E concentrated gas inlet, 1123F concentrated gas outlet, 1124 blower,

1125 a heated gas supply, 1126A gas heater, 1126A heated gas supply inlet,

1126B heating gas outlet, 1126C steam inlet, 1126D steam outlet, 1126E plate,

1126F steam piping, 1127 heating gas

(Note of FIG. 12)

1200 concentration device, 1201 concentration device to-be-treated gas, 1202 blower, 1203 concentrated gas,

1204 gas heater, 1205 concentrated gas inlet, 1206 concentrated gas outlet, 1207 cooling water inlet,

1208 cooling water outlet, 1209 sheet, 1210 cooling water pipe, 1211 nitrogen desorption type solvent recovery device,

1212 blower, 1213 heating gas supply source, 1214 gas heater, 1214A heating gas source inlet,

1214B heated gas outlet, 1214C steam inlet, 1214D steam outlet, 1214E plate,

1214F water vapor piping, 1215 heated gas, 1216 gas return line, 201 first adsorbent A,

202 a first adsorbent B, 203 a condenser, 204 a separator, 205a second adsorbent desorption gas heater,

205A steam inlet, 205B steam outlet, 205C plate, 205D steam piping,

205E condenser outlet gas inlet, 205F condenser outlet gas outlet, 206 second adsorbent,

207 a carrier gas circulation blower, 208A first adsorbent desorption gas heater, 208A water vapor inlet,

208B steam outlet, 208C sheet, 208D steam piping,

208E outlet gas/carrier gas inlet for the second adsorbent material, 208F outlet for the desorbed gas from the first adsorbent material,

209 gas cooler for second adsorbent, 209A cooling water inlet, 209B cooling water outlet, 209C plate, and,

209D cooling water piping, 209E condenser outlet gas inlet, 209F condenser outlet gas outlet,

L1 adsorption inlet gas of adsorption concentration processing device, L2 adsorption outlet gas of adsorption concentration processing device,

L3 dehumidifier adsorption inlet gas, L4 dehumidifier adsorption outlet gas,

L5 desorption inlet gas, L6 concentrated gas containing organic solvent, and,

L7 organic solvent recovery device absorbing outlet gas, L8 dehumidifier desorbing inlet gas,

L9 desorption outlet gas of the dehumidifier, L10 desorption inlet gas of the first adsorbent, L11 desorption outlet gas of the first adsorbent,

L12 condenser outlet gas, L13 second adsorbent material adsorbing inlet gas,

L14 heater inlet gas for desorbing second adsorbent, L15 desorption inlet gas for desorbing second adsorbent, and,

L16 second adsorbent outlet gas, V201 first adsorbent tank A automatic lower damper,

The V202 first adsorption tank B automatic lower air door, the V203 first adsorption tank A automatic upper air door,

The V204 first adsorption tank B is automatically ventilated, the V205 first adsorption tank A is desorbed with an inlet valve,

V206 first adsorption tank B desorption inlet valve, V207 second adsorption material adsorption inlet valve, V208 second adsorption material desorption inlet valve

(Note of FIG. 13)

1300 concentration device, 1301 concentration device, gas to be treated, 1302 blower, 1303 concentration gas,

1304 gas cooler, 1304A cooling water inlet, 1304B cooling water outlet, 1304C concentrated gas inlet,

1304D condensate outlet, 1304E sheet, 1308F cooling water pipe, 1304G condensate discharge line,

1305 separator, 1305A condensate, 1305B condensate regasifying gas, 1305C condensate discharge line,

1306 a blower, 1307 a heating gas source, 1308A gas heater, 1308A heating gas supply inlet,

1308B a heated gas outlet, 1308C a steam inlet, 1308D a steam outlet, 1308E plates,

1308F steam piping, 1309 heating gas, 1310 condensed liquid regasification gas line

(Note of FIG. 14)

1400 concentration device, 1401 concentration device, gas to be treated, 1402 blower, 1403 concentrated gas,

1404 buffer device, 1404A adsorbent material, 1404B metal mesh, 1405 concentration-homogenizing gas 1406 blower,

1407 a heated gas supply source, 1408A gas heater, 1408A heated gas source inlet, 1408B heated gas outlet,

1408C steam inlet, 1408D steam outlet, 1408E sheet, 1408F steam piping,

1409 heating the gas

(Note of FIG. 15)

1500 first concentration device, 1501 second concentration device, 1503 first concentration device to-be-treated gas, 1504 first blower,

1505 first concentrated gas, 1506 second blower, 1507 gas cooler, 1507A cooling water inlet,

1507B cooling water outlet, 1507C plate, 1507D cooling water pipe, 1507E first concentrated gas inlet,

1507F first concentrated gas outlet, 1508 second concentrating device inlet gas

(Note of FIG. 16)

1600a cross-sectional view of the concentrator, 1600b bottom view of the concentrator, 1601 process gas, 1602a blower cross-sectional view,

1602b a blower bottom view, 1603 a first adsorption rotor, 1604 a second adsorption rotor,

1605 inner peripheral flow passage forming members of the first and second adsorption rotors,

1606 outer peripheral side flow passage forming members of the first and second adsorption rotors

Detailed Description

An embodiment of the thickener according to the present invention will be described in detail with reference to fig. 1 to 4. In the embodiments described below, the same or common portions are denoted by the same reference numerals in the drawings, and the description thereof will not be repeated.

Fig. 1 and 2 are a sectional view and a bottom view of a thickener 100 according to the present embodiment. As shown in fig. 2, the concentration device 100 according to the present embodiment includes the adsorption rotor 90 housed in the processing chamber 1, and the adsorption elements 30 and the partitions 20 are alternately arranged in a hollow cylindrical shape in the space between the pair of the first hollow disk 11 and the second hollow disk 12. In the adsorption rotor 90, the first flow passage forming member 2, the inner peripheral flow passage forming member 4, and the outer peripheral flow passage forming member 5 are provided in a range where members other than a seal member described later do not directly contact each other.

Next, an example of the concentration of the gas to be treated in the concentration apparatus 100 will be described with reference to fig. 1 to 3. The adsorption rotor 90 may be divided into an adsorption region R2 and a desorption region R1. The adsorption rotor 90 rotates in the direction of the arrow in fig. 2, and thereby the adsorption element 30 can move in the adsorption region R2 and the desorption region R1. Specifically, the adsorption element 30 moved to the adsorption region R2 adsorbs the substance to be treated by ventilating the gas to be treated F1 from the outer peripheral side to the inner peripheral side of the adsorption rotor 90, and discharges the clean air F2 from which the substance to be treated is removed via the first flow passage forming member 2 to the outside of the system of the concentration device 100. The adsorption element 30 moved to the desorption region R1 desorbs the adsorbed substance to be treated by ventilating the heated gas F3, whose air volume supplied from the inner peripheral side flow passage forming member 4 is smaller than that of the gas to be treated, from the inner peripheral side to the outer peripheral side of the adsorption rotor 90, and then discharges the concentrated gas F4, in which the substance to be treated is concentrated, through the outer peripheral side flow passage forming member 5. A series of operations are continuously performed by the rotation of the adsorption rotor 90, thereby enabling the removal and concentration of the substance to be treated from the gas to be treated F1.

Fig. 3 is a detailed view of the desorption region R1. The inner peripheral flow path forming member 4 is a member that defines the desorption region and includes the inner peripheral curved surfaces 4b and 4c having the shapes shown in the drawing, and the outer peripheral flow path forming member 5 is a member that defines the desorption region and includes the outer peripheral curved surfaces 5b and 5c, which are disposed so as to face each other on the outer peripheral side and the inner peripheral side of the adsorption rotor 90. The partition 20 has no air flow path and is a member mounted between the plurality of adsorption elements 30. The partition 20 is composed of a main body portion 21 and a sealing portion 22, and is attached between the adsorption elements 30 in an airtight and/or liquid-tight manner. The main body 21 is a skeleton portion of the partition portion 20 made of, for example, triangular stainless steel, iron, or the like. The sealing portion 22 is a portion having air-tightness and/or liquid-tightness, which is bonded around the main body portion 21 with a rubber material or the like. The shape of the seal portion 22 is not particularly limited, and for example, as shown in fig. 3, the seal portion has a rib-like structure on the inner cylinder side and the side surface side, and when the adsorption rotor 90 rotates, the air-tightness and/or liquid-tightness of the adsorption region R2 and the desorption region R1 is maintained by sliding contact with the wall surfaces of the inner circumferential side curved surfaces 4b, 4c and the outer circumferential side curved surfaces 5b, 5c, thereby preventing the fluid flowing in the adsorption region R2 and the desorption region R1 from leaking to the respective regions.

Although not shown, a seal member may be attached to the circumference of the first flow path forming member 2. The airtightness with the opening 11a is maintained by the sealing member, so that the gas F1 to be treated can be prevented from leaking into the clean air F2. Further, a seal member may be attached to the circumferences of the inner peripheral side flow passage forming member 4 and the outer peripheral side flow passage forming member 5. The airtightness with the inner and outer peripheries of the hollow circular disk 11 and the hollow circular disk 12 is maintained by this sealing member, so that the leakage of the concentrated gas F4 to the gas to be treated F1 can be prevented, or the leakage of the gas to be treated F1 to the concentrated gas F4 can be prevented.

Fig. 4 is a detailed view of the adsorption element 30. The adsorption element 30 is a member containing the following adsorbents: a material capable of adsorbing a substance to be treated contained in a gas to be treated by introducing the gas to be treated and capable of desorbing the substance to be treated by introducing a heating gas. The adsorbent includes activated carbon, activated carbon fiber, zeolite, activated alumina, etc. The adsorption element 30 has a plurality of air flow paths, specifically, a honeycomb structure as shown by honeycomb blocks 30 c. Further, a honeycomb structure is formed by laminating a plurality of layers of honeycomb-shaped paper in which corrugated sheets 30a and sheets 30b containing an adsorbent are laminated.

The gas to be treated F1 is a gas containing an organic solvent. Examples of the organic solvent include: toluene, xylene, ethylbenzene, benzene, trimethylbenzene, dimethoxymethane, N-hexane, 2-heptane, methylcyclopentane, N-heptane, pentane, isopentane, decane, decalin, dichloromethane, ethyl chloride, 1, 2-dichloroethane, trichloroethylene, vinyl chloride monomer, 1, 2-trichloroethane, chloroform, dichlorobenzene, methanol, ethanol, N-propanol, isopropanol, N-butanol, isobutanol, 2-methyl-1-butanol, 1-amino-2-propanol, diacetone alcohol, methoxypropanol, ethylene glycol, PGME, PGMEA, acetone, MEK, MIBK, cyclohexanone, ethyl acetate, butyl acetate, propyl acetate, butyl butyrate, 1, 4-dioxane, 1, 3-dioxolane, tetrahydrofuran, ethyl lactate, ethyl 3-ethoxypropionate, ethyl acetate, methyl ethyl acetate, N-heptane, pentane, isopentane, decane, decalin, dichloromethane, ethyl chloride, ethyl acetate, 2-methyl-ethyl acetate, N-propyl acetate, N-, 3-methoxybutyl acetate, ethylene glycol monoethyl ether acetate, diethylene glycol monobutyl ether, methylcyclohexane, dipropylene glycol methyl ether, butyl cellosolve acetate, phenol, 2-methylpentane, 3-methylpentane, vinylcyclohexane, styrene, acrylonitrile, acrylates, MMA, DMF, DMAc, NMP, DMSO, limonene, acetic acid, propionic acid, formaldehyde, acetaldehyde, ammonia, and the like.

The heated gas F3 is a gas obtained by heating a gas such as nitrogen, inert gas, or outside air with a heating device. Preferably, a portion of the clean air F2 may be split for heating. This is because the temperature and humidity are stable. The heating temperature is preferably 100 ℃ or higher. The heating device includes a steam heater, an electric heater, heat exchange by a heat exchanger, and the like.

Examples of the supply device of the to-be-treated gas F1 and the heating gas F3 include a blower, a pump, and the like. The air door for adjusting air quantity and switching flow path can be arranged, and vibration-proof components such as canvas can also be arranged.

Next, an embodiment of a concentration system according to the present invention using the above-described concentration device according to the present invention will be described with reference to fig. 5 to 16. The concentration device may be connected to a device described below, and may be configured as a concentration system. The concentration system shown in fig. 5 and later is an example, and in the combination of the apparatuses connected to the concentration apparatus, the concentration apparatus is not described in detail, but has the same configuration as the concentration apparatus 100 described in fig. 1 to 4. In the concentration system shown in fig. 5 and later, the concentration device is illustrated in fig. 1.

FIG. 5 is an example of a combination of pretreatment and pre-adsorption units. The adsorbent material such as granular activated carbon, impregnated activated carbon, activated alumina, zeolite, etc. provided in the pre-adsorption unit pre-adsorbs the degraded components in the concentration device, so that the replacement cycle of the adsorption rotor can be kept long. In addition, there is also an effect of suppressing variation in the concentration of the organic solvent contained in the gas a to be treated.

When dust or paint mist is contained, as shown in fig. 6, a roll filter unit and a medium performance filter unit are further provided, and clogging of the honeycomb structure can be suppressed by dust removal. Although 3 units are connected in the figure, it is also possible to divide the connection into 3 pipes.

Fig. 7 is an example of combining a gas cooler with a gas heater as a pretreatment. The concentration device can adjust the humidity and temperature to the optimum adsorption conditions. Depending on humidity control conditions, a filter for catching water droplets, such as a demister, may be provided between the gas cooler and the gas heater.

The concentrated gas discharged from the concentration device is connected to the combustion device shown in fig. 8, 9, and 10, and the organic solvent can be oxidatively decomposed. As shown in the figure, the heating of the combustion device may be performed by a burner, but may be performed by an electric heater. As shown in the figure, the desorption gas in the combustion device and the concentration device may be preheated by heat exchange with the combustion gas. The catalyst shown in FIG. 8 is platinum/palladium or the like. The heat storage material shown in fig. 10 includes ceramics and the like.

The concentrated gas discharged from the concentration device may be liquefied and recovered with any one of a steam desorption type solvent recovery device, a nitrogen desorption type solvent recovery device, and a condensation system using a gas cooler and a separator, which are shown in fig. 11, 12, and 13. As the solvent recovery apparatus, for example, japanese patent No. 5982796 can be used, and as the nitrogen desorption type solvent recovery apparatus, for example, the apparatus described in japanese patent No. 5482776 can be used.

In order to suppress the concentration change of the concentrated gas discharged from the concentration device, a buffer device filled with an adsorbent as shown in fig. 14 may be connected. The adsorbent filled in the buffer device shown in fig. 14 includes activated carbon, zeolite, activated alumina, and the like.

When the load of the process gas is large, the following configuration may be adopted: a system configuration in which the concentration apparatuses shown in fig. 15 are arranged in series, and a configuration in which 2 or more adsorption rotors shown in fig. 16 are provided in one concentration apparatus.

While the embodiments and examples have been described above, the embodiments and examples disclosed herein are illustrative in all respects and are not intended to be limiting. The scope of the present invention is indicated by the utility model registration claims, including meanings equivalent to the utility model registration claims and all modifications within the scope.

Claims

1. A concentration system characterized in that a concentration device is connected to at least one of the following devices (A) to (N):

(A) a pre-adsorption unit,

(B) A reel type filter unit,

(C) A medium performance filter unit,

(D) A gas cooler,

(E) A gas heater,

(F) A catalyst oxidation device,

(G) A direct combustion device,

(H) A heat accumulating type combustion device,

(I) A water vapor desorption type solvent recovery device,

(J) A nitrogen desorption type solvent recovery device,

(K) A condensing device,

(M) a buffer device,

2. The concentration system according to claim 1, wherein an inner peripheral side flow passage forming member and an outer peripheral side flow passage forming member are provided on an inner peripheral side and an outer peripheral side of the adsorption rotor so as to be opposed to each other, and a part of the plurality of adsorption elements rotated in accordance with rotation of the adsorption rotor are communicated in an airtight or liquid-tight manner so as to distinguish the adsorption region and the desorption region.

3. The concentration system according to claim 2, wherein sealing members are attached to the outer and inner circumferential sides of the adsorption rotor of the partition, and the sealing members are in contact with the inner circumferential flow channel forming member and the outer circumferential flow channel forming member while sliding with rotation of the adsorption rotor, thereby maintaining the air-tight or liquid-tight properties.

4. The concentrating system of any one of claims 1 to 3, wherein the adsorbent element has a honeycomb structure.