US3901660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the continuous carrying out heterogeneous catalytic reaction in liquid phase
Assignee: Hoechst AG
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Filing: 1973-10-31
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Granted: 1975-08-26
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Expires: 1993-10-31
Abstract
Abstract Heterogeneous catalytic reactions are carried out continuously in liquid phase. A substantially uniform suspension of liquid starting material and fine particulate catalyst together with resulting reaction product is continuously conveyed upwardly in a reaction zone by the introduction, in accordance with the principle of an airlift pump, of a gas or vaporous material near the bottom of the reaction zone, and recycled downwardly through a reflux line to the bottom of the reaction zone. The path of liquid material through the reflux line is interrupted by an injector system situated in a closed catalyst-separating zone containing reaction product. Following establishment of the reaction equilibrium, starting material is continuously supplied near the bottom of the reaction zone and crude but catalyst-free reaction product continuously removed near the head of the catalyst-separating zone. Reaction product which is to be removed is caused to travel through the catalyst-separating zone with the injector system therein towards the reaction product outlet at a velocity smaller than the sedimentation velocity of the catalyst under the prevailing operational conditions.
Inventors
- 👤 Alexander Ohorodnik
- 👤 Kurt Sennewald
- 👤 Joachim Hundeck
- 👤 Paul Stutzke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:53
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/20; B01J8/22; B01J8/224; B01J8/228; B01J8/005; B01J8/006; B01J8/1836; C; C07; C07C; C07C51/00; C07C51/347; C07C51/377; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00106; B01J2208/00168; B01J2208/00176
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
315 words
AN APPARATUS FOR CARRYING OUT HETEROGENEOUS CATALYTIC REACTIONS CONTINUOUSLY THEREIN, IN A FLUIIZED BED AND IN LIQUID PHASE, COMPRISING A JACKETED REACTOR AT ITS LOWER PART WITH A LIQUID MATTER INLET PROJECTING THEREINTO AND SUPPLYING THE REACTOR WITH LIQUID STARTING MATERIAL, A SUPPLY TUBE DISPOSED AT THE HEAD OF THE REACTOR FEEDING FINE PARTICULATE CATALYST THEREINTO FOR SUSPENDING IT IN THE LIQUID MATERIAL, AN OVERFLOW DISPOSED AT THE UPPER PART OF THE REACTOR, A RECYCLE CONDUIT OPENING INTO THE LOWER PART OF THE REACTOR AND HAVING A CATALYST SEPARATOR MOUNTED THEREON, THE SEARATOR HAVIN A LOWER TAPERED END, THE OVERFLOW PROJECTING OUTWARDLY FROM THE REACTOR, PROJECTING INTO THE SEPARATOR FROM ABOVE AND EXTENDING DOWNWARDLY AND COCENTRICALLY INTO THE RECYCLE CONDUIT SO AS TO FORM AN INJECTOR PROVIDING FOR A SUCTION INTAKE INTO THE RECYCLE CONDUIT, A GAS INLET DISPOSED AT THE LOWER END OF THE REACTOR PROJECTING AND DELIVERING GASEOUS MATTER THEREINTO SO AS TO CAUSE A CIRCULATION OF THE SUSPENSION OF FINE PARTICULATE CATALYST, LIQUID STARTING MATERIAL AND RESULTING LIQUID REACTION PRODUCT UPWARDLY THROUGH THE REACTOR TO AND THROUGH OVERFLOW AND DOWN THROUGH THE RECYCLE CONDUIT BACK INTO THE REACTOR, AN OUTLET DISPOSED AT THE HEAD OF THE REACTOR REMOVING GASEOUS MATTER THEREFROM, A CYCLE LINE CCONNECTING THE GAS INLET AND OUTLET TOGETHER, A GAS DISCHARGE LINE BRANCHING OFF FROM AND A GAS SUPPLY LINE OPENING INTO, THE CYCLE LINE, A CIRCULATING PUMP IN THE CYCLE LINE BETWEEN THE GAS DISCHARGE AND SUPPLY LINES, PIPES OPENING INTO, AND SUPPLYING, THE JACKET OF THE REACTOR ITH A HEATING OR COOLING LIQUID, A VALVED CONDUIT PROJECTING OUTWARDLY FROM THE UPPER PART OF THE CATALYST SEPARATOR REMOVING REACTION PRODUCT AND OPENING INTO A FILTERING MEANS RETAINING TRACES OF CATALYST COMING FROM THE CATALYST SEPARATOR AND TRAVELLING THROUGH SAID CONDUIT, AND THE FILTERING MEANS BEING FITTED WITH AN UPPER REACTION PRODUCT OUTLET AND A LOWER CATALYST DISCHARGE LINE.
Claim 2
Independent Claim
315 words
AN APPARATUS FOR CARRYING OUT HETEROGENEOUS CATALYTIC REACTIONS CONTINUOUSLY THEREIN, IN A FLUIIZED BED AND IN LIQUID PHASE, COMPRISING A JACKETED REACTOR AT ITS LOWER PART WITH A LIQUID MATTER INLET PROJECTING THEREINTO AND SUPPLYING THE REACTOR WITH LIQUID STARTING MATERIAL, A SUPPLY TUBE DISPOSED AT THE HEAD OF THE REACTOR FEEDING FINE PARTICULATE CATALYST THEREINTO FOR SUSPENDING IT IN THE LIQUID MATERIAL, AN OVERFLOW DISPOSED AT THE UPPER PART OF THE REACTOR, A RECYCLE CONDUIT OPENING INTO THE LOWER PART OF THE REACTOR AND HAVING A CATALYST SEPARATOR MOUNTED THEREON, THE SEARATOR HAVIN A LOWER TAPERED END, THE OVERFLOW PROJECTING OUTWARDLY FROM THE REACTOR, PROJECTING INTO THE SEPARATOR FROM ABOVE AND EXTENDING DOWNWARDLY AND COCENTRICALLY INTO THE RECYCLE CONDUIT SO AS TO FORM AN INJECTOR PROVIDING FOR A SUCTION INTAKE INTO THE RECYCLE CONDUIT, A GAS INLET DISPOSED AT THE LOWER END OF THE REACTOR PROJECTING AND DELIVERING GASEOUS MATTER THEREINTO SO AS TO CAUSE A CIRCULATION OF THE SUSPENSION OF FINE PARTICULATE CATALYST, LIQUID STARTING MATERIAL AND RESULTING LIQUID REACTION PRODUCT UPWARDLY THROUGH THE REACTOR TO AND THROUGH OVERFLOW AND DOWN THROUGH THE RECYCLE CONDUIT BACK INTO THE REACTOR, AN OUTLET DISPOSED AT THE HEAD OF THE REACTOR REMOVING GASEOUS MATTER THEREFROM, A CYCLE LINE CCONNECTING THE GAS INLET AND OUTLET TOGETHER, A GAS DISCHARGE LINE BRANCHING OFF FROM AND A GAS SUPPLY LINE OPENING INTO, THE CYCLE LINE, A CIRCULATING PUMP IN THE CYCLE LINE BETWEEN THE GAS DISCHARGE AND SUPPLY LINES, PIPES OPENING INTO, AND SUPPLYING, THE JACKET OF THE REACTOR ITH A HEATING OR COOLING LIQUID, A VALVED CONDUIT PROJECTING OUTWARDLY FROM THE UPPER PART OF THE CATALYST SEPARATOR REMOVING REACTION PRODUCT AND OPENING INTO A FILTERING MEANS RETAINING TRACES OF CATALYST COMING FROM THE CATALYST SEPARATOR AND TRAVELLING THROUGH SAID CONDUIT, AND THE FILTERING MEANS BEING FITTED WITH AN UPPER REACTION PRODUCT OUTLET AND A LOWER CATALYST DISCHARGE LINE.
Claim 3
Dependent Claim
29 words
The apparatus as claimed in claim 1, which comprises a throttling member in the overflow above the catalyst separator reducing the velocity of the suspension circulating in the apparatus.
Claim 4
Dependent Claim
39 words
The apparatus as claimed in claim 1, wherein the catalyst discharge line is fitted with a brand line opening into the lower portion of the reactor, the branch line delivering catalyst coming from the filtering means to the reactor.
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) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |