Patent EP0483975A1 successfully refreshed from Google Patents.
EP0483975A1
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EP
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Device and method for holding catalyst in a radial flow reactor
Assignee: Nagaoka International Corp
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Filing: 1991-10-01
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Granted: —
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Expires: 2011-10-01
Abstract
Abstract A device for holding catalyst in a radial flow reactor (1) includes a plurality of catalyst containers (4) each of which is a segment of a cylinder divided in the axial plane thereof. Each catalyst container has a cross section of a size which enables the container to be carried in and out of the radial fow reactor through an opening formed in an upper or lower portion of the radial flow reactor, and includes a screen (5) provided on a liquid inlet side and a screen (6) provided on a liquid outlet side. The catalyst containers are assembled together to form a cylindrical catalyst bed in the radial flow reactor. The catalyst containers attains a uniform thickness of a catalyst bed in a radial direction between its inlet side and outlet side over the entire height of the cylindrical catalyst bed. According to the method of the invention, catalyst is held in the catalyst containers of the above device and one or more catalyst containers requiring checking or repair only can be taken out of the reactor.
Inventors
- 👤 Tadayoshi Nagaoka
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 19:26
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/02; B01J8/0207; B01J10/00; B01J8/0214; B01J8/04; B01J8/0403; C; C01; C01C; C01C1/00; C01C1/02; C01C1/04; C01C1/0405; C01C1/0417; B01J2208/00; B01J2208/00796; B01J2208/00805; B01J2208/00814; B01J2208/00884; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
120 words
A device for holding catalyst in a radial flow reactor (1) characterized in the said device comprises a plurality of catalyst containers (4, 24) each of which is a segment of a cylinder divided in the axial plane thereof, has a cross section of a size which enables the container to be carried in and out of the radial flow reactor through an opening formed in an upper or lower portion of the radial flow reactor, and comprises a first screen (5, 25) provided on a liquid inlet side and a second screen (6, 26) provided on a liquid outlet side, said plurality of catalyst containers being assembled together to form a cylindrical catalyst bed in the radial flow reactor.
Claim 2
Dependent Claim
38 words
A device as defined in claim 1 wherein each of said catalyst containers (4, 24) further comprises side plates (7, 8; 27) provided in side portions of the container and connecting the first screen and the second screen.
Claim 3
Dependent Claim
38 words
A device as defined in claim 1 wherein said first screen is provided on one of an outer circumferential surface and an inner circumferential surface of the catalyst container and said second screen is provided o the other.
Claim 4
Dependent Claim
31 words
A device as defined in claim 1 wherein said radial flow reactor is of a stationary catalyst bed type and said catalyst containers have closed top and bottom plates (10, 9).
Claim 5
Dependent Claim
42 words
A device as defined in claim 1 wherein said radial flow reactor is of a moving catalyst bed type and said catalyst containers have an inlet (29) for receiving catalyst supplied constantly from outside and an outlet (28) for removing catalyst therefrom.
Claim 6
Dependent Claim
28 words
A device as defined in claim 1 wherein said catalyst containers are arranged in a single layer as viewed in a radial direction of the cylindrical catalyst bed.
Claim 7
Dependent Claim
27 words
A device as defined in claim 1 wherein said catalyst containers are arranged in plural layers as viewed in a radial direction of the cylindrical catalyst bed.
Claim 8
Dependent Claim
18 words
A device as defined in claim 1 wherein all of said catalyst containers have the same cross section.
Claim 9
Dependent Claim
55 words
A device as defined in claim 1 wherein one set of the catalyst containers have one cross section (34) and another set of the catalyst containers have another cross section (35) which is different from said one cross section and these two sets of the catalyst containers are assembled to form the cylindrical catalyst bed.
Claim 10
Dependent Claim
25 words
A device as defined in claim 1 wherein said catalyst containers are divided in plural sections in the longitudinal direction thereof by substantially horizontal planes.
Claim 11
Dependent Claim
25 words
A device as defined in claim 1 wherein said catalyst containers are divided in plural sections in the longitudinal direction thereof by substantially inclined planes.
Claim 12
Independent Claim
173 words
A method for holding catalyst in a radial flow reactor comprising: filling catalyst in each of a plurality of catalyst containers each of which is a segment of a cylinder divided in the axial plane thereof and has a cross section which enables the container to be carried in and out of the radial flow reactor through an opening formed in an upper or lower portion of the radial flow reactor, and comprises a first screen provided on a liquid inlet side and a second screen provided on a liquid outlet side; carrying the catalyst containers having been filled with catalyst into the radial flow reactor through the opening thereof and assembling the catalyst containers to form a cylindrical catalyst bed; and taking, when necessary, only one or more of the catalyst containers which require checking or repair out of the radial flow reactor through the opening of the reactor for checking or repair, retaining the rest of the catalyst containers which do not require checking or repair in the radial flow reactor.
References Cited (Backward Citations)
DE2016614A1
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EP0400698A1
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