CN108096990B - Adsorption separation device - Google Patents
Adsorption separation device Download PDFInfo
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- CN108096990B CN108096990B CN201611052240.1A CN201611052240A CN108096990B CN 108096990 B CN108096990 B CN 108096990B CN 201611052240 A CN201611052240 A CN 201611052240A CN 108096990 B CN108096990 B CN 108096990B
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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
- B01D53/04—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
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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
- B01D53/04—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
- B01D53/0446—Means for feeding or distributing gases
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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
- B01D53/04—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
- B01D53/0454—Controlling adsorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/104—Alumina
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/106—Silica or silicates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/116—Molecular sieves other than zeolites
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/41—Further details for adsorption processes and devices using plural beds of the same adsorbent in series
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/414—Further details for adsorption processes and devices using different types of adsorbents
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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)
Abstract
The invention discloses a gas adsorption separation device, which comprises a shell, an upper sealing slide block, an upper cover plate, a lower sealing slide block, a lower cover plate and a driving device, wherein the shell comprises an inner shell and an outer shell, the inner shell and the outer shell form a concentric sleeve structure, N adsorption blocks are arranged in a space between the inner shell and the outer shell, and the driving device is arranged in the inner shell; the upper end of the shell is connected with the upper sealing slide block, the upper sealing slide block is connected with the upper cover plate, the upper cover plate is provided with a raw material air inlet pipe and a desorption gas exhaust pipe, the lower end of the shell is connected with the lower sealing slide block, the lower surface of the lower sealing slide block is connected with the lower cover plate, the lower cover plate is provided with a product gas exhaust pipe and a forward-release boosting process connecting pipe, and two ports of the forward-release boosting process connecting pipe are respectively arranged between the raw material air inlet pipe and the desorption gas exhaust pipe. The invention realizes the processes of adsorption, sequential release, desorption regeneration and pressure increase of different adsorption blocks in the same equipment.
Description
Technical Field
The invention relates to the field of gas separation, in particular to gas adsorption separation equipment.
Background
Along with the deterioration of crude oil, the upgrading of oil quality and the continuous improvement of environmental protection requirements. The demand of hydrogen in oil refining and chemical processes is increasing. The hydrogen is widely applied to the oil refining fields of hydrocracking, hydrofining, residual oil hydrogenation and the like, and is also applied to chemical processes of butanol-octanol, xylene isomerization and the like. The hydrogen plays an important role in the aspect of efficiently utilizing limited petroleum resources to the maximum extent and producing low-sulfur, low-nitrogen and low-metal fuel oil, and has irreplaceable effects in the aspects of ensuring long-period operation of a refining device and prolonging the service life of a catalyst.
Oil refining enterprises with annual processing amount of ten million tons have hydrogen consumption of about 10-20 ten thousand Nm according to different processing depths3And/h, the total capacity of the oil refining device in China exceeds 7 hundred million tons in 2015.
The hydrogen used in the refining industry mainly comprises natural gas hydrogen production, coal hydrogen production, and by-product hydrogen produced in refining processes such as reforming and ethylene. As a hydrogenation device in the refining production process is expected to use high-purity hydrogen as much as possible, a hydrogen purification device plays an important role in refining enterprises, and membrane separation and pressure swing adsorption technologies are most widely used at present. The invention provides an efficient and energy-saving adsorption separation device capable of fully utilizing pressure energy in an adsorption separation process and an operation method of the adsorption separation device, aiming at the problems that the adsorption separation period is long, the pressure energy is not reasonably utilized and the like in the traditional pressure swing adsorption technology.
Disclosure of Invention
The invention discloses a gas adsorption separation device which can be widely applied to the processes of preparing oxygen or nitrogen by air separation, preparing high-purity hydrogen by purifying hydrogen-containing gas and the like.
The invention discloses a gas adsorption separation device, which comprises a shell, an upper sealing slide block, an upper cover plate, a lower sealing slide block, a lower cover plate and a driving device, wherein the shell comprises an inner shell and an outer shell, the inner shell and the outer shell form a concentric sleeve structure, N adsorption blocks (N is an integral multiple of 4) are arranged in a space between the inner shell and the outer shell, and the driving device is arranged in the inner shell; the upper end of the shell is connected with the upper sealing slide block, the upper sealing slide block is connected with the upper cover plate, the upper cover plate is provided with a raw material air inlet pipe and a desorption gas exhaust pipe, the lower end of the shell is connected with the lower sealing slide block, the lower surface of the lower sealing slide block is connected with the lower cover plate, the lower cover plate is provided with a product gas exhaust pipe and a forward-release boosting process connecting pipe, and two ports of the forward-release boosting process connecting pipe are respectively arranged between the raw material air inlet pipe and the desorption gas exhaust pipe.
In the adsorption separation device, the raw material inlet pipe and the product gas exhaust pipe are in a vertical corresponding relationship and are on the same axis.
In the adsorption separation apparatus, the casing may be in the shape of a cube, a cylinder, a rectangular parallelepiped, or the like, and preferably is a cylinder.
In the adsorption separation device, the adsorption block may be a wedge, a cylinder, a rectangular parallelepiped or another polygonal body, preferably a cylinder.
In the adsorption separation device, the adsorption blocks are uniformly arranged in the space between the inner shell and the outer shell.
In the adsorption separation device, the upper sealing slider and the lower sealing slider have the same shape as the space between the inner casing and the outer casing.
In the adsorption separation device, the upper sealing slide block and the lower sealing slide block are respectively provided with holes with the same number as the adsorption blocks, and the holes can be in the shapes of circles, ellipses, polygons and the like. The upper sealing slide block and the lower sealing slide block are used for accurately conveying the feed gas to the specified adsorption blocks and keeping independence between different adsorption blocks.
In the adsorption separation apparatus, the adsorption block is filled with an adsorption separation material. The adsorption separation material can be one or more of activated alumina adsorbent, silica gel adsorbent, activated carbon adsorbent and molecular sieve adsorbent.
In the adsorption separation device, the driving device drives the shell, the upper sealing slide block and the lower sealing slide block to rotate according to a set program, and the rotation track is a concentric circle of the shell.
The driving device adopts a rotation control motor.
In the adsorption separation device, the raw material gas inlet pipe is connected with the raw material gas buffer tank, and when the raw material gas needs to be boosted, a raw material gas booster can be further arranged. The raw materials intake pipe is used for promoting and stablizing feed gas's pressure, goes in accurately distributing feed gas to corresponding adsorption block through last sealed slider simultaneously.
In the adsorption separation device, the upper sealing slide block is used for accurately conveying the raw material gas to the adsorption blocks, and the upper sealing slide block and the lower sealing slide block keep independence between different adsorption blocks.
Among the above-mentioned adsorption and separation device, in the same direction as put the process connecting pipe that steps up be used for with be in the same direction as the adsorption block of putting the state and be in the desorption regeneration after the state of waiting to step up the adsorption block and couple together, will be in the same direction as the gassing of the adsorption block of putting the state directly discharge to waiting to step up the adsorption block after the regeneration through the aperture on the lower seal slider, whole process need not add the control valve to effectively reduce the loss of pressure of in-process.
In the adsorption separation device, the product gas exhaust pipe is used for sending out purified gas obtained after treatment of the adsorption block, and an outlet of the product gas exhaust pipe is connected with a purified gas buffer tank so as to ensure the stability of the flow and pressure of the output gas.
Compared with the prior art, the absorption and separation device provided by the invention has the following advantages: (1) compared with the multi-tank process adopted by the existing adsorption separation, the adsorption separation method adopts an adsorption block mode, and integrates the adsorption blocks for realizing the processes of adsorption, sequential release, desorption regeneration and pressure rise into one device; (2) compared with the multi-valve control adopted in the prior art, the rotary control mode of the sealing slide block and the device shell is adopted, so that different adsorption blocks realize the processes of adsorption, sequential release, desorption regeneration and pressure rise in the same equipment; (3) the adsorption block in the sequential desorption process is directly connected with the adsorption block in the boosting regeneration process by a pipeline, and the pressure of the adsorption block after desorption regeneration is boosted by the product gas in the sequential desorption process, so that the pressure energy of the system is fully recovered.
Drawings
FIG. 1 is a schematic view of the adsorption separation apparatus according to the present invention.
FIG. 2 is a schematic view of the internal structure of the adsorption separation unit.
Fig. 3 is a schematic structural diagram of an upper sealing slider.
Fig. 4 is a structural schematic diagram of a lower sealing slider.
Fig. 5 is a schematic view of the structure of the upper cover plate.
Fig. 6 is a schematic view of the structure of the lower cover plate.
Detailed Description
The gas adsorption separation apparatus of the present invention will be described in detail below. It is to be understood that the matter herein set forth is for the purpose of illustration and description only and is not intended to be limiting.
The gas adsorption separation device of the present invention is further described with reference to the accompanying drawings, as shown in fig. 1 to 6, the gas adsorption separation device of the present invention includes a housing 1, an upper sealing slider 2, an upper cover plate 3, a lower sealing slider 4, a lower cover plate 5 and a driving device 6, the housing 1 includes an inner housing 101 and an outer housing 102, the inner housing 101 and the outer housing 102 form a concentric sleeve structure, N adsorption blocks 103 (N is an integer multiple of 4) are disposed in a space between the inner housing 101 and the outer housing 102, and the adsorption blocks 103 are uniformly arranged in the space between the inner housing and the outer housing. The inner shell 101 is internally provided with a driving device 6, the driving device 6 drives the shell 1, the upper sealing slide block 2 and the lower sealing slide block 4 to rotate according to a set program, and the rotating track is a concentric circle of the shell. The upper end of the shell 1 is connected with the upper sealing slide block 2, holes 201 with the same quantity as the adsorption blocks 103 are formed in the upper sealing slide block 2, the holes 201 can be circular, oval, polygonal and the like, the upper sealing slide block 2 is connected with the upper cover plate 3, a raw material air inlet pipe 301 and a desorption gas exhaust pipe 302 are arranged on the upper cover plate 3, the lower end of the shell 1 is connected with the lower sealing slide block 4, holes 401 with the same quantity as the adsorption blocks 103 are formed in the lower sealing slide block 4, the holes 401 can be circular, oval, polygonal and the like, the lower surface of the lower sealing slide block 4 is connected with the lower cover plate 5, a product gas exhaust pipe 501 and a forward-releasing and boosting process connecting pipe 502 are arranged on the lower cover plate 5, and two ports of the forward-releasing and boosting process connecting pipe are respectively arranged between the raw material air inlet pipe 301 and. The raw material inlet pipe 301 and the product gas exhaust pipe 501 are in a corresponding relationship from top to bottom and are on the same axis.
The following describes the operation of the adsorption separation device, taking the example of filling 4 adsorption blocks between the inner shell and the outer shell, and the operation of the adsorption separation device includes the following steps:
(1) starting a driving device to enable the shell, the upper sealing slide block and the lower sealing slide block to rotate along with the driving device according to a set program, wherein the set program refers to a time interval between four processes of controlling adsorption, sequential release, desorption gas discharge and pressure rise of the regenerated adsorption block;
(2) raw material gas enters into the first adsorption block through a raw material inlet pipe 301 through a hole in the upper sealing slide block 2 to be adsorbed and separated, the raw material gas passes through the adsorption block from top to bottom, product gas obtained after treatment of the adsorption block is discharged through a product gas exhaust pipe 501 through a hole in the lower sealing slide block 4, and the product gas is collected and used for other purposes. The unwanted impurities are adsorbed and stay on the adsorbing materials in the adsorbing block;
(3) when the first adsorption block reaches a saturation degree state, the driving device drives the shell, the upper sealing slide block and the lower sealing slide block to rotate, the adsorption block which finishes the adsorption process enters a forward release state, and product gas remained in an adsorption space in the adsorption process is discharged into the regenerated adsorption block through a hole in the lower sealing slide block through a forward release and pressure boosting process connecting pipe to boost pressure of the regenerated adsorption block;
(4) and the adsorption block which finishes the sequential release process enters the desorption process, and the adsorption block which needs to be desorbed and regenerated is communicated with the desorption gas exhaust pipe 302 through a hole on the upper sealing slide block. Desorbing gas is discharged from the adsorption block from bottom to top and is sent out of the device through a desorption gas exhaust pipe 302, and a regenerated adsorption block is obtained after desorption is completed;
(5) the driving device further rotates, the regeneration adsorption block enters a boosting process, and the regeneration adsorption block after boosting enters the next adsorption process;
(6) and (5) repeating the steps (2) to (6), so that the continuous operation of the device can be realized, and the required purified gas can be continuously prepared.
Claims (13)
1. A gas adsorption separation device comprises a shell, an upper sealing slide block, an upper cover plate, a lower sealing slide block, a lower cover plate and a driving device, wherein the shell comprises an inner shell and an outer shell, the inner shell and the outer shell form a concentric sleeve structure, N adsorption blocks are arranged in a space between the inner shell and the outer shell, N is an integral multiple of 4, and the driving device is arranged in the inner shell; the utility model discloses a desorption gas exhaust pipe, including casing, upper end and upper seal slider, upper seal slider and upper cover plate, be provided with raw materials intake pipe and desorption gas blast pipe on the upper cover plate, the casing lower extreme is connected with lower seal slider, and lower apron connection below the lower seal slider is provided with product gas exhaust pipe and in the same direction as putting on the lower cover plate and step up the process connecting pipe, two mouths in the process connecting pipe that steps up in the same direction as putting set up respectively between raw materials intake pipe and desorption gas blast pipe, in the same direction as putting the process connecting pipe that steps up and being used for being in the adsorption block of putting in the same direction as with be in the desorption regeneration after the state of waiting to step up adsorb the piece and be connected, will be in the same direction as gassing of the adsorption block of putting the state in.
2. The adsorptive separation device of claim 1, wherein: the raw material air inlet pipe and the product gas exhaust pipe are in up-down corresponding relation and are on the same axis.
3. The adsorptive separation device of claim 1, wherein: the shell is any one of a cube, a cylinder and a cuboid.
4. The adsorptive separation device according to claim 1 or 3, wherein: the housing is cylindrical in shape.
5. The adsorptive separation device of claim 1, wherein: the adsorption block is a wedge-shaped body, a cylinder, a cuboid or other polygonal bodies.
6. The adsorptive separation device of claim 1, wherein: the adsorption block is a cylinder.
7. The adsorptive separation device of claim 1, wherein: the adsorption blocks are uniformly arranged in the space between the inner shell and the outer shell.
8. The adsorptive separation device of claim 1, wherein: the shape of the upper sealing sliding block and the lower sealing sliding block is the same as that of the space between the inner shell and the outer shell.
9. The adsorptive separation device of claim 1, wherein: and holes with the same number as the adsorption blocks are formed in the upper sealing sliding block and the lower sealing sliding block.
10. The adsorptive separation device of claim 9, wherein: the shape of the hole is circular, oval or polygonal.
11. The adsorptive separation device of claim 1, wherein: and the adsorption block is filled with adsorption separation materials.
12. The adsorptive separation device of claim 1, wherein: the driving device drives the shell, the upper sealing slide block and the lower sealing slide block to rotate according to a set program, and the rotating track is a concentric circle of the shell.
13. The adsorptive separation device of claim 1, wherein: the raw material gas inlet pipe is connected with the raw material gas buffer tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201611052240.1A CN108096990B (en) | 2016-11-25 | 2016-11-25 | Adsorption separation device |
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| CN201611052240.1A CN108096990B (en) | 2016-11-25 | 2016-11-25 | Adsorption separation device |
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| CN108096990A CN108096990A (en) | 2018-06-01 |
| CN108096990B true CN108096990B (en) | 2021-05-04 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111375292B (en) | 2018-12-31 | 2021-05-04 | 中国石油化工股份有限公司 | High-purity gas preparation device |
| CN113929056B (en) * | 2020-06-29 | 2023-03-10 | 中国石油化工股份有限公司 | System for preparing hydrogen for fuel cell vehicle by utilizing refined hydrogen-containing gas |
| EP4218989A1 (en) * | 2022-01-26 | 2023-08-02 | Siemens Energy Global GmbH & Co. KG | Unit for direct capture of carbon dioxide |
| EP4360741A1 (en) * | 2022-10-24 | 2024-05-01 | Siemens Energy Global GmbH & Co. KG | System for direct air capture of carbon dioxide |
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| JPH08131750A (en) * | 1994-11-15 | 1996-05-28 | Mitsubishi Heavy Ind Ltd | Adsorbed gas separating device for physical adsorption process |
| JPH08141346A (en) * | 1994-11-17 | 1996-06-04 | Mitsubishi Heavy Ind Ltd | Rotary gas separation device using pressure swing adsorption method |
| WO1999028013A2 (en) * | 1997-12-01 | 1999-06-10 | Questair Technologies, Inc. | Modular pressure swing adsorption apparatus |
| US6527837B2 (en) * | 2000-03-30 | 2003-03-04 | Nichias Corporation | Rotor and sealing device for rotary adsorber |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2007024132A1 (en) * | 2005-08-26 | 2007-03-01 | Optimair Holding B. V. I. O | Method and device for separating a substance from a process gas |
| EP2014962B1 (en) * | 2006-05-02 | 2018-03-21 | Teijin Pharma Limited | Rotary valve and adsorption separation device |
| CN101139088B (en) * | 2007-08-10 | 2011-06-01 | 西安交通大学 | Rotating molecular sieve minisize pressure swing adsorption oxygen making device |
| CN101249368A (en) * | 2008-04-07 | 2008-08-27 | 刘昂峰 | Rotary type pressure-variable adsorption gas separating method |
| CN102755810A (en) * | 2012-08-02 | 2012-10-31 | 南京圣火水泥新技术工程有限公司 | Rotor type pressure swing adsorption gas separation device |
| CN203803330U (en) * | 2014-01-22 | 2014-09-03 | 马军 | Organic solvent recovery device capable of preventing detonation of solvent |
| CN204147734U (en) * | 2014-08-22 | 2015-02-11 | 中国华能集团清洁能源技术研究院有限公司 | The empty separating and purifying device of a kind of runner |
| CN104208980A (en) * | 2014-08-22 | 2014-12-17 | 中国华能集团清洁能源技术研究院有限公司 | Turning wheel air separation purification device and turning wheel air separation purification method |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08131750A (en) * | 1994-11-15 | 1996-05-28 | Mitsubishi Heavy Ind Ltd | Adsorbed gas separating device for physical adsorption process |
| JPH08141346A (en) * | 1994-11-17 | 1996-06-04 | Mitsubishi Heavy Ind Ltd | Rotary gas separation device using pressure swing adsorption method |
| WO1999028013A2 (en) * | 1997-12-01 | 1999-06-10 | Questair Technologies, Inc. | Modular pressure swing adsorption apparatus |
| US6527837B2 (en) * | 2000-03-30 | 2003-03-04 | Nichias Corporation | Rotor and sealing device for rotary adsorber |
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| CN108096990A (en) | 2018-06-01 |
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