Patent US2829181A successfully refreshed from Google Patents.
US2829181A
Expired / Lapsed
US
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Hydrocarbon conversion process
Assignee: MW Kellogg Co
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Filing: 1954-09-08
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Granted: 1958-04-01
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Expires: 1974-09-08
Abstract
No abstract record available.
Inventors
- 👤 Samuel R Stiles
- 👤 Axel R Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:35
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/56; C07C2/58; C07C2/62; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
IN A PROCESS FOR COOLING A HYDROCARBON CONVERSION ZONE WHICH IS MAINTAINED AT A LOW TEMPERATURE AND FROM WHICH HEAT IS REMOVED BY AUTOREFRIGERATION WHEREBY LOW BOILING HYDROCARBONS ARE VAPORIZED, THE IMPROVEMENT WHICH COMPRISES COMPRESSING AND CONDENSING THE LOW BOILING HYDROCARBON VAPORS THEREBY PROVIDIG A LIQUID AUTOREFRIGERANT UNDER ELEVATED PRESSURE, EXPANDING SAID AUTOREFRIGERANT TO A LOWER PRESSURE WHEREBY VAPORIZATION OCCURS, CONTACTING THE EXPANDED AUTOREFRIGERANT IN INDIRECT HEAT EXCHANGE WITH HYDROCARBON REACTANTS WHEREBY SAID HYDROCARBONS ARE COOLED PRIOR TO THEIR ADMISSION TO THE CONVERSION ZONE, PASING THE LIQUID PORTION OF THE EXPANDED AUTOREFRIGERANT TO THE CONVERSION ZONE, COMPRESSING AND CONDENSING THE VAPORIZED PORTION OF THE EXPANDED AUTOREFRIGERANT AND COMBININ G IT WITH FRESH AUTOREFRIGERANT FROM THE CONVERSION ZONE.
Claim 2
Dependent Claim
117 words
IN A PROCESS FOR COOLING A HYDROCARBON CONVERSION ZONE WHICH IS MAINTAINED AT A LOW TEMPERATURE AND FROM WHICH HEAT IS REMOVED BY AUTOREFRIGERATION WHEREBY LOW BOILING HYDROCARBONS ARE VAPORIZED, THE IMPROVEMENT WHICH COMPRISES COMPRESSING AND CONDENSING THE LOW BOILING HYDROCARBON VAPORS THEREBY PROVIDIG A LIQUID AUTOREFRIGERANT UNDER ELEVATED PRESSURE, EXPANDING SAID AUTOREFRIGERANT TO A LOWER PRESSURE WHEREBY VAPORIZATION OCCURS, CONTACTING THE EXPANDED AUTOREFRIGERANT IN INDIRECT HEAT EXCHANGE WITH HYDROCARBON REACTANTS WHEREBY SAID HYDROCARBONS ARE COOLED PRIOR TO THEIR ADMISSION TO THE CONVERSION ZONE, PASING THE LIQUID PORTION OF THE EXPANDED AUTOREFRIGERANT TO THE CONVERSION ZONE, COMPRESSING AND CONDENSING THE VAPORIZED PORTION OF THE EXPANDED AUTOREFRIGERANT AND COMBININ G IT WITH FRESH AUTOREFRIGERANT FROM THE CONVERSION ZONE.
References Cited (Backward Citations)
US2441249A
Cited
US2429205A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |