US4324701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rectangular-solid packaged catalyst assembly
Assignee: Mitsubishi Heavy Industries Ltd
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Filing: 1980-12-03
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Granted: 1982-04-13
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Expires: 2000-12-03
Abstract
Abstract A rectangular-solid packaged catalyst assembly made up of a plurality of rectangular-solid unit catalysts stacked and assembled together, the unit catalysts having a honeycomb structure with a multiplicity of gas passages each. Heat-resistant packings are used to cover at least the vertices and the neighboring areas of the faces of the unit catalysts other than the gas-passage faces and also to cover the edges of the gas-passage faces surrounding the gas passages, the packings being integrally secured to the unit catalysts and packaged together in a rectangular-solid housing. Retaining strips are placed over the packings on the edges of the gas-passage faces on at least either the gas inlet or outlet ends of the unit catalysts and are securely attached to the housing.
Inventors
- 👤 Mitsuyasu Honda
- 👤 Yoshihiro Shiraishi
- 👤 Toru Seto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:12
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/28; F01N3/2803; F01N3/2825; F01N3/2828; F01N13/00; F01N13/011; F01N13/017; B; B01; B01J; B01J35/00; B01J35/50; B01J35/56; B01J35/57; F01N3/2839; F01N3/2842; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
132 words
An improved rectangular-solid catalyst assembly of the type having a plurality of rectangular-solid unit catalysts stacked and assembled together, the unit catalysts having a honeycomb structure with a multiplicity of gas passages each extending from a gas inlet end to a gas outlet end, the improvement comprising, in combination therewith, heat-resistant packings covering at least the vertices and the neighboring peripheral areas of the faces of the unit catalysts other than the gas-passage faces thereof and also covering the edges of the gas-passage faces surrounding the gas passages, a rectangular-solid housing, said packings being integrally secured to said unit catalysts and packed together in said rectangular-solid housing, and retaining strips placed over the edges of the gas-passage faces on at least one of said unit catalysts and securely attached to said housing:
Claim 2
Dependent Claim
132 words
An improved rectangular-solid catalyst assembly of the type having a plurality of rectangular-solid unit catalysts stacked and assembled together, the unit catalysts having a honeycomb structure with a multiplicity of gas passages each extending from a gas inlet end to a gas outlet end, the improvement comprising, in combination therewith, heat-resistant packings covering at least the vertices and the neighboring peripheral areas of the faces of the unit catalysts other than the gas-passage faces thereof and also covering the edges of the gas-passage faces surrounding the gas passages, a rectangular-solid housing, said packings being integrally secured to said unit catalysts and packed together in said rectangular-solid housing, and retaining strips placed over the edges of the gas-passage faces on at least one of said unit catalysts and securely attached to said housing:
Claim 3
Dependent Claim
90 words
An improved rectangular-solid package catalyst assembly, as claimed in claim 1, wherein said heat-resistant packings comprise L-shaped members provided upstream and downstream of gas passage surface of a unit catalyst, said unit catalyst being placed on said heat-resistant packings, said unit catalyst and said heat-resistant packings being incorporated alternately in stacked and packed condition, a second type heat-resistant packing comprising a reverse L-shaped member provided in the corner part right above of said packaged assembly and a flat heat-resistant packing at the uppermost part and right lateral part thereof respectively.
Claim 4
Dependent Claim
31 words
An improved rectangular-solid package catalyst assembly, as claimed in claims 1 or 2, wherein said heat-resistant packings have a thickness approximately as thick as the outer walls of the unit catalysts.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-04-12 | 1985-10-12 | 1986-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-12 | 1989-10-12 | 1990-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-12 | 1993-10-12 | 1994-04-13 | $7700.00 | Window Closed / Lapsed |