Patent EP0249020A2 successfully refreshed from Google Patents.
Patent US4089752A successfully refreshed from Google Patents.
US4089752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distillation column reactor and process
Assignee: Sun Ventures Inc
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Filing: 1976-08-30
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Granted: 1978-05-16
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Expires: 1996-08-30
Abstract
Abstract A distillation column reactor which provides a relatively long residence time with a minimum drop in pressure which comprises a distillation column containing standard trays with downcomers, a liquid reservoir between the trays, and vapor ports provided through said reservoir, whereby liquid from said downcomers enters said reservoir thereby providing increased liquid residence time in said column.
Inventors
- 👤 II Allen W. Hancock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:08
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/16; B01D3/18; B01D3/20; B01D3/009; Y; Y10; Y10S; Y10S203/00; Y10S203/06
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
169 words
A distillation column reactor to provide increased residence time for liquid reactants with a minimum drop in pressure in said column which comprises a distillation column containing a multiplicity of superposed conventional trays with downcomers and interdigitated single reservoirs, the latter having therewithin means providing each of said reservoirs with substantial depth to hold liquid substantially out of contact with vapor, each of said reservoirs between an adjacent pair of trays occupying essentially the entire cross-sectional area of the column save for the area occupied by a vapor by-pass means and an open ended conduit extending through the bottom of said reservoir to a substantial height thereabove, said vapor by-pass means permitting vapors to flow through said by-pass from the tray below said by-pass to the tray above, said conduit extending from a predetermined substantial height above the bottom of its reservoir to below its reservoir wherein said conduit effects flow of liquid from the top of the liquid surface of said reservoir to the tray below said reservoir.
Claim 2
Dependent Claim
169 words
A distillation column reactor to provide increased residence time for liquid reactants with a minimum drop in pressure in said column which comprises a distillation column containing a multiplicity of superposed conventional trays with downcomers and interdigitated single reservoirs, the latter having therewithin means providing each of said reservoirs with substantial depth to hold liquid substantially out of contact with vapor, each of said reservoirs between an adjacent pair of trays occupying essentially the entire cross-sectional area of the column save for the area occupied by a vapor by-pass means and an open ended conduit extending through the bottom of said reservoir to a substantial height thereabove, said vapor by-pass means permitting vapors to flow through said by-pass from the tray below said by-pass to the tray above, said conduit extending from a predetermined substantial height above the bottom of its reservoir to below its reservoir wherein said conduit effects flow of liquid from the top of the liquid surface of said reservoir to the tray below said reservoir.
Claim 3
Dependent Claim
170 words
A distillation column reactor to provide increased residence time for liquid reactants with a minimum drop in pressure in said column which comprises a distillation column containing a multiplicity of superposed conventional trays with downcomers and interdigitated single reservoirs, the latter having therewithin means providing each of said reservoirs with substantial depth to hold liquid substantially out of contact with vapor, each of said reservoirs between an adjacent pair of trays occupying essentially the entire cross-sectional area of the column save for the area occupied by a vapor by-pass means and an open ended conduit extending through said reservoir whose top is above the bottom of said downcomer, said vapor by-pass means permitting vapors to flow through said by-pass from the tray below said by-pass to the tray above, said conduit extending from a predetermined substantial height above the bottom of its reservoir to below its reservoir wherein said conduit effects flow of liquid from the top of the liquid surface of said reservoir to the tray below said reservoir.
Claim 4
Dependent Claim
170 words
A distillation column reactor to provide increased residence time for liquid reactants with a minimum drop in pressure in said column which comprises a distillation column containing a multiplicity of superposed conventional trays with downcomers and interdigitated single reservoirs, the latter having therewithin means providing each of said reservoirs with substantial depth to hold liquid substantially out of contact with vapor, each of said reservoirs between an adjacent pair of trays occupying essentially the entire cross-sectional area of the column save for the area occupied by a vapor by-pass means and an open ended conduit extending through said reservoir whose top is above the bottom of said downcomer, said vapor by-pass means permitting vapors to flow through said by-pass from the tray below said by-pass to the tray above, said conduit extending from a predetermined substantial height above the bottom of its reservoir to below its reservoir wherein said conduit effects flow of liquid from the top of the liquid surface of said reservoir to the tray below said reservoir.
Claim 5
Dependent Claim
186 words
A distillation column reactor to provide increased residence time for reactants with a minimum drop in pressure in said column which comprises effecting said reaction in a distillation column containing a multiplicity of superposed conventional trays with downcomers and interdigitated single reservoirs, the downcomers of said trays extending to near the bottom of said reservoirs, the latter having therewithin means providing each of said reservoirs with substantial depth to hold liquid substantially out of contact with vapor, each of said reservoirs between an adjacent pair of trays occupying essentially the entire cross-sectional area of the column save for the area occupied by a vapor by-pass means and an open ended conduit extending through said reservoir to a substantial height above the bottom of said reservoir, said vapor by-pass means permitting vapors to flow through said by-pass from the tray below said by-pass to the tray above, said conduit extending from a predetermined substantial height above the bottom of its reservoir to below its reservoir, said conduit effecting flow of liquid from the top of the liquid surface of said reservoir to the tray below said reservoir.
Claim 6
Dependent Claim
186 words
A distillation column reactor to provide increased residence time for reactants with a minimum drop in pressure in said column which comprises effecting said reaction in a distillation column containing a multiplicity of superposed conventional trays with downcomers and interdigitated single reservoirs, the downcomers of said trays extending to near the bottom of said reservoirs, the latter having therewithin means providing each of said reservoirs with substantial depth to hold liquid substantially out of contact with vapor, each of said reservoirs between an adjacent pair of trays occupying essentially the entire cross-sectional area of the column save for the area occupied by a vapor by-pass means and an open ended conduit extending through said reservoir to a substantial height above the bottom of said reservoir, said vapor by-pass means permitting vapors to flow through said by-pass from the tray below said by-pass to the tray above, said conduit extending from a predetermined substantial height above the bottom of its reservoir to below its reservoir, said conduit effecting flow of liquid from the top of the liquid surface of said reservoir to the tray below said reservoir.
Claim 7
Dependent Claim
193 words
A process for carrying out reactions in a distillation column reactor to provide increased residence time for reactants with a minimum drop in pressure in said column which comprises effecting said reaction in a distillation column containing a multiplicity of superposed conventional trays with downcomers and interdigitated single reservoirs, the downcomers of said trays extending to near the bottom of said reservoirs, the latter having therewithin means providing each of said reservoirs with substantial depth to hold liquid substantially out of contact with vapor, each of said reservoirs between an adjacent pair of trays occupying essentially the entire cross-sectional area of the column save for the area occupied by a vapor by-pass means and an open ended conduit extending through said reservoir to a substantial height above the bottom of said reservoir, said vapor by-pass means permitting vapors to flow through said by-pass from the tray below said by-pass to the tray above, said conduit extending from a predetermined substantial height above the bottom of its reservoir to below its reservoir, said conduit effecting flow of liquid from the top of the liquid surface of said reservoir to the tray below said reservoir.
Claim 8
Dependent Claim
193 words
A process for carrying out reactions in a distillation column reactor to provide increased residence time for reactants with a minimum drop in pressure in said column which comprises effecting said reaction in a distillation column containing a multiplicity of superposed conventional trays with downcomers and interdigitated single reservoirs, the downcomers of said trays extending to near the bottom of said reservoirs, the latter having therewithin means providing each of said reservoirs with substantial depth to hold liquid substantially out of contact with vapor, each of said reservoirs between an adjacent pair of trays occupying essentially the entire cross-sectional area of the column save for the area occupied by a vapor by-pass means and an open ended conduit extending through said reservoir to a substantial height above the bottom of said reservoir, said vapor by-pass means permitting vapors to flow through said by-pass from the tray below said by-pass to the tray above, said conduit extending from a predetermined substantial height above the bottom of its reservoir to below its reservoir, said conduit effecting flow of liquid from the top of the liquid surface of said reservoir to the tray below said reservoir.
Claim 9
Dependent Claim
21 words
The process of claim 4 wherein the reactants in said column are the nitrogen-containing by-products obtained in the hydrolysis of terephthalonitrile.
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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) | 1981-05-15 | 1981-11-14 | 1982-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-15 | 1985-11-14 | 1986-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-15 | 1989-11-14 | 1990-05-16 | $7700.00 | Window Closed / Lapsed |