US3189537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retarding corrosion of heat exchangers
Assignee: Universal Oil Products Co
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Filing: 1962-03-14
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Granted: 1965-06-15
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Expires: 1982-03-14
Abstract
No abstract record available.
Inventors
- 👤 Robert H Carlton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:52
CPC Classifications
C; C10; C10G; C10G7/00; C10G7/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A METHOD OF RETARDING CORROSION OF A HEAT EXCHANGER BEING USED TO COOL HOT HYDROCARGON VAPORS FROM A CRUDE COLUMN CONTAINING NITROGENOUS SALT, WHICH COMPRISES: CONDITIONING THE OVERHEAD VAPORS BY INJECTING AMMONIA AND THEN A CORROSION INHIBITOR THEREIN COOLING AND CONDENSING SAID CONDITIONED HYDROCARBON VAPORS IN THE PRESENCE OF WATER INTRODUCED AS HEREINAFTER DESCRIBED, SEPARATING WATER FROM HYDROCARBON AND COMMINGLING AT LEAST A PORTION OF SAID WATER WITH SAID HOT HYDROCARBON VAPORS PRIOR TO COOLING SAME TO THE SOLIDIFICATION TEMPERATURE OF SAID SALT.
Claim 2
Independent Claim
83 words
A METHOD OF RETARDING CORROSION OF A HEAT EXCHANGER BEING USED TO COOL HOT HYDROCARGON VAPORS FROM A CRUDE COLUMN CONTAINING NITROGENOUS SALT, WHICH COMPRISES: CONDITIONING THE OVERHEAD VAPORS BY INJECTING AMMONIA AND THEN A CORROSION INHIBITOR THEREIN COOLING AND CONDENSING SAID CONDITIONED HYDROCARBON VAPORS IN THE PRESENCE OF WATER INTRODUCED AS HEREINAFTER DESCRIBED, SEPARATING WATER FROM HYDROCARBON AND COMMINGLING AT LEAST A PORTION OF SAID WATER WITH SAID HOT HYDROCARBON VAPORS PRIOR TO COOLING SAME TO THE SOLIDIFICATION TEMPERATURE OF SAID SALT.
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) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |