US4443231A
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Continuous chromatographic separations in a magnetically stabilized fluidized bed
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1982-02-02
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Granted: 1984-04-17
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Expires: 2002-02-02
Abstract
Abstract A multicomponent feed mixture may be separated into its components continuously by injecting said feed mixture and a carrier fluid into a magnetically stabilized fluidized bed containing adsorbent particles admixed or composited with magnetizable particles. The bed particles continuously move transverse to the flow of the carrier fluid, which serves to fluidize the bed, such that the components of the feed mixture are transported downstream varying distances from the injection point depending upon the adsorption and desorption characteristics of said components. Product streams comprising a portion of the carrier fluid and a portion of the feed mixture containing at least a portion, preferably a major portion, of one of the components can then be recovered from the surface of the bed, the most strongly adsorbed component being transported (and thus recovered) farthest from the injection point.
Inventors
- 👤 Jeffrey H. Siegell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:10
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/50; B; B01; B01D; B01D15/00; B01D15/08; B01D15/10; B01D15/18; B01D15/1807; B01D53/00; B01D53/02; B01D53/025; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/42; C; C07; C07C; C07C7/00; C07C7/12; C07C7/13; B01D15/1892; B01D15/26; B01D15/36; B01D15/361; G01N30/58
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
153 words
A chromatographic process for continuously separating a feed mixture containing at least two components which comprises: (a) introducing said mixture into a moving bed containing magnetizable particles, said bed being fluidized by a carrier fluid distributed along said bed and passing through said bed in an ascending manner transverse to the flow of said bed and being stabilized by a magnetic means having sufficient strength to suppress solids backmixing therein, (b) contacting said mixture with an adsorbent in said bed for a period of time necessary to chromatographically separate at least a portion of one of said components from said mixture, (c) recovering at least two streams, at least one of which is a product stream from said moving bed along the path of said bed, said product stream comprising a portion of the carrier fluid and a portion of the feed mixture containing at least a portion of one of said components.
Claim 2
Dependent Claim
153 words
A chromatographic process for continuously separating a feed mixture containing at least two components which comprises: (a) introducing said mixture into a moving bed containing magnetizable particles, said bed being fluidized by a carrier fluid distributed along said bed and passing through said bed in an ascending manner transverse to the flow of said bed and being stabilized by a magnetic means having sufficient strength to suppress solids backmixing therein, (b) contacting said mixture with an adsorbent in said bed for a period of time necessary to chromatographically separate at least a portion of one of said components from said mixture, (c) recovering at least two streams, at least one of which is a product stream from said moving bed along the path of said bed, said product stream comprising a portion of the carrier fluid and a portion of the feed mixture containing at least a portion of one of said components.
Claim 3
Dependent Claim
21 words
The process of claim 1 wherein said magnetizable particles are composites of non-ferromagnetic material, ferromagnetic material, ferrimagnetic material or mixtures thereof.
Claim 4
Dependent Claim
14 words
The process of claim 1 wherein said magnetizable particles are admixed with non-ferromagnetic particles.
Claim 5
Dependent Claim
21 words
The process of claim 2 or 3 wherein the non-ferromagnetic material, ferromagnetic material, ferrimagnetic material or mixtures thereof has sorption properties.
Claim 6
Dependent Claim
21 words
The process of claim 2 or 3 wherein the non-ferromagnetic material, ferromagnetic material, ferrimagnetic material or mixtures thereof has catalytic properties.
Claim 7
Dependent Claim
15 words
The process of claimm 2 or 3 wherein the non-ferromagnetic material is an ion-exchange resin.
Claim 8
Dependent Claim
14 words
The process of claim 1 wherein the components of said feed mixture are hydrocarbons.
Claim 9
Dependent Claim
14 words
The process of claim 7 wherein hydrogen gas is present in said feed mixture.
Claim 10
Dependent Claim
18 words
The process of claim 1, 2 or 3 wherein the magnetic means is an externally applied magnetic field.
Claim 11
Dependent Claim
30 words
The process of claim 1, 2 or 3 wherein said magnetic means is a uniform magnetic field applied externally in a direction colinear with the flow of the carrier fluid.
Claim 12
Dependent Claim
18 words
The process of claim 1, 2 or 3 wherein said magnetic means is obtained using permanently magnetized particles.
Claim 13
Dependent Claim
14 words
The process of claim 1, 2 or 3 wherein the carrier fluid is liquid.
Claim 14
Dependent Claim
14 words
The process of claim 1, 2 or 3 wherein the carrier fluid is gaseous.
Claim 15
Dependent Claim
23 words
The process of claim 1, 2 or 3 wherein a portion of at least one product stream is recycled to said feed mixture.
Claim 16
Dependent Claim
22 words
The process of claim 1, 2 or 3 wherein said particles and adsorbent are differentially heated along the path of said bed.
Claim 17
Dependent Claim
33 words
The process of claim 1, 2 or 3 wherein an electrical field is applied to the bed in a direction transverse to the flow of both the carrier fluid and the moving solids.
Claim 18
Dependent Claim
21 words
The process of claim 1, 2 or 3 wherein said adsorbent is an inert granular material coated with a liquid adsorbent.
Claim 19
Dependent Claim
19 words
The process of claim 1 wherein the carrier fluid is separated from at least one of said product streams.
Claim 20
Dependent Claim
32 words
The process of claim 1, 2 or 3 wherein the composition of the carrier fluid varies with distance from the point at which the feed mixture is introduced into said moving bed.
Claim 21
Dependent Claim
32 words
The process of claim 1, 2 or 3 wherein the concentration of the carrier fluid varies with distance from the point at which the feed mixture is introduced into said moving bed.
Claim 22
Dependent Claim
17 words
The process of claim 1, 2, or 3 wherein a chemical reaction occurs within said moving bed.
Claim 23
Dependent Claim
23 words
The process of claim 1, 2 or 3 wherein at least one product stream is recovered from the upper surface of said bed.
Claim 24
Dependent Claim
27 words
The process of claim 1, 2 or 3 wherein said carrier fluid passes at an angle of greater than 45 degrees to the flow of said bed.
Claim 25
Dependent Claim
18 words
The process of claim 1 wherein said feed mixture is introduced into the lower portion of said bed.
Claim 26
Dependent Claim
140 words
A chromatographic process for continuously separating C 8 aromatic isomers from a mixture of hydrocarbons which comprises: (a) introducing said mixture into a moving bed containing magnetizable particles, said bed being fluidized by a carrier fluid distributed along said bed and passing through said bed in an ascending manner transverse to the flow of said bed and being stabilized by a magnetic means having sufficient strength to suppress solids backmixing therein, (b) contacting said mixture with an adsorbent in said bed for a period of time necessary to chromatographically separate at least a portion of one C 8 aromatic isomer from said mixture, (c) recovering at least two streams, at least one of which is a product stream from said moving bed comprising at least a portion of one C 8 aromatic isomer and a portion of said carrier fluid.
Claim 27
Dependent Claim
140 words
A chromatographic process for continuously separating C 8 aromatic isomers from a mixture of hydrocarbons which comprises: (a) introducing said mixture into a moving bed containing magnetizable particles, said bed being fluidized by a carrier fluid distributed along said bed and passing through said bed in an ascending manner transverse to the flow of said bed and being stabilized by a magnetic means having sufficient strength to suppress solids backmixing therein, (b) contacting said mixture with an adsorbent in said bed for a period of time necessary to chromatographically separate at least a portion of one C 8 aromatic isomer from said mixture, (c) recovering at least two streams, at least one of which is a product stream from said moving bed comprising at least a portion of one C 8 aromatic isomer and a portion of said carrier fluid.
Claim 28
Dependent Claim
21 words
The process of claim 25 wherein said magnetizable particles are composites of non-ferromagnetic material, ferromagnetic material, ferrimagnetic material or mixtures thereof.
Claim 29
Dependent Claim
14 words
The process of claim 25 wherein said magnetizable particles are admixed with non-ferromagnetic particles.
Claim 30
Dependent Claim
14 words
The process of claim 26 or 27 wherein the non-ferromagnetic material is a zeolite.
Claim 31
Dependent Claim
22 words
The process of claim 26 or 27 wherein the non-ferromagnetic material is a zeolite and the zeolite is a potassium exchanged faujasite.
Claim 32
Dependent Claim
18 words
The process of claim 25, 26 or 27 wherein the magnetic means is an externally applied magnetic field.
Claim 33
Dependent Claim
16 words
The process of claim 25 wherein said feed mixture is a mixture of C 8 aromatics.
Claim 34
Dependent Claim
20 words
The process of claim 25 wherein at least one product stream contains p-xylene and a portion of the carrier fluid.
Claim 35
Dependent Claim
21 words
The process of claim 25 wherein at least one product stream contains ethyl benzene and a portion of the carrier fluid.
Claim 36
Dependent Claim
20 words
The process of claim 25 wherein at least one product stream contains o-xylene and a portion of the carrier fluid.
Claim 37
Dependent Claim
20 words
The process of claim 25 wherein at least one product stream contains m-xylene and a portion of the carrier fluid.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-04-17 | 1987-10-17 | 1988-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-17 | 1991-10-17 | 1992-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-17 | 1995-10-17 | 1996-04-17 | $7700.00 | Window Closed / Lapsed |