Patent US3897194A successfully refreshed from Google Patents.
US3897194A
Expired / Lapsed
US
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Method for vaporizing a sensitive liquid
Assignee: Heat Research Corp
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Filing: 1974-04-18
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Granted: 1975-07-29
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Expires: 1994-04-18
Abstract
Abstract This disclosure teaches a method of vaporizing a sensitive liquid such as liquified natural gas. The liquid to be vaporized is passed through a heat exchanger in noncontact heat exchange relationship with a heat transfer medium. The medium is heated in a tower flowing downwardly through trays or packing in direct contact with upflowing hot combustion gases. The combustion gases preferably are generated in a combustor spaced from the tower.
Inventors
- 👤 Wiesenthal Peter Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:02
CPC Classifications
F; F28; F28C; F28C3/00; F28C3/06; F17; F17C; F17C9/00; F17C9/02; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2201/0119; F17C2221/00; F17C2221/03; F17C2221/032; F17C2221/033; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/0161; F17C2227/00; F17C2227/03; F17C2227/0367; F17C2227/0388; F17C2227/0393
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A METHOD OF VAPORIZING LIQUIFIED NATURAL GAS AND COMPRISING STEPS AS FOLLOWS, PASSING THE LIQUIFIED NATURAL GAS THROUGH A HEAT EXCHANGER IN NONCONTACT HEAT EXCHANGE RELATIONSHIP WITH A LIQUID HEAT TRANSFER MEDIUM IN COUNTERFLOW HEAT EXCHANGE RELATIONSHIP THEREWITH TO VAPORIZE THE NATURAL GAS THEREBY COOLING THE MEDIUM, CIRCULATING THE COOLED MEDIUM DOWNWARDLY THROUGH A TOWER SPACED FROM THE HEAT EXCHANGER TO THAT THE COOLED MEDIUM PASSES IN DIRECT HEAT EXCHANGE RELATIONSHIP WITH HOT COMBUSTION GASES PASSING UPWARDLY THERETHROUGH, ENLARGING SURFACE AREA OF THE MEDIUM IN THE TO INCREASE THE HEAT EXCHANGE THERETO, BURNING A FUEL IN A COMBUSTOR SPACED FROM THE VESSEL TO PRODUCE THE HOT COMBUSTION GASES.
Claim 2
Independent Claim
108 words
A METHOD OF VAPORIZING LIQUIFIED NATURAL GAS AND COMPRISING STEPS AS FOLLOWS, PASSING THE LIQUIFIED NATURAL GAS THROUGH A HEAT EXCHANGER IN NONCONTACT HEAT EXCHANGE RELATIONSHIP WITH A LIQUID HEAT TRANSFER MEDIUM IN COUNTERFLOW HEAT EXCHANGE RELATIONSHIP THEREWITH TO VAPORIZE THE NATURAL GAS THEREBY COOLING THE MEDIUM, CIRCULATING THE COOLED MEDIUM DOWNWARDLY THROUGH A TOWER SPACED FROM THE HEAT EXCHANGER TO THAT THE COOLED MEDIUM PASSES IN DIRECT HEAT EXCHANGE RELATIONSHIP WITH HOT COMBUSTION GASES PASSING UPWARDLY THERETHROUGH, ENLARGING SURFACE AREA OF THE MEDIUM IN THE TO INCREASE THE HEAT EXCHANGE THERETO, BURNING A FUEL IN A COMBUSTOR SPACED FROM THE VESSEL TO PRODUCE THE HOT COMBUSTION GASES.
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) | 1978-07-28 | 1979-01-27 | 1979-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-28 | 1983-01-27 | 1983-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-28 | 1987-01-27 | 1987-07-29 | $7700.00 | Window Closed / Lapsed |