US3724426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrothermal liquefied petroleum gas vaporization system
Assignee: Individual
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Filing: 1971-04-14
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Granted: 1973-04-03
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Expires: 1991-04-14
Abstract
Abstract A hydrothermal, indirect fired liquid petroleum gas vaporization system employed as a stand-by liquefied petroleum gas unit utilizes a forced draft power burner firing into a multiple pass gas fire tube immersed in a heat exchange liquid and isolated from a vaporization assembly through which liquefied petroleum gas is passed. A vaporization assembly for vaporizing the liquefied petroleum gas insures low gas velocities and delivery of dry gas vapor and eliminates liquid gas carryover. The liquefied gas from storage enters a manifold and is distributed into multiple heat exchange tubes immersed in the heat exchange liquid. The liquefied gas vaporizes during passage through the heat exchange tubes and passes into a vapor header and vapor outlet riser, all designed to prevent any liquid gas carryover.
Inventors
- 👤 V Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:53
CPC Classifications
F; F28; F28D; F28D7/00; F28D7/08; F17; F17C; F17C7/00; F17C7/02; F17C7/04; F23; F23K; F23K5/00; F23K5/02; F23K5/14; F23K5/22; F28D7/082; F17C2203/00; F17C2203/03; F17C2203/0304; F17C2203/0345; F17C2205/00; F17C2205/03; F17C2205/0302; F17C2205/0323; F17C2205/0326; F17C2205/0332; F17C2205/0335; F17C2205/0338; F17C2221/00; F17C2221/03; F17C2221/032; F17C2221/035; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/03; F17C2223/033; F17C2225/00; F17C2225/01; F17C2225/0107; F17C2225/0123; F17C2227/00; F17C2227/03; F17C2227/0302; F17C2227/0306; F17C2227/0332; F17C2227/0367; F17C2227/0369; F17C2227/0374; F17C2227/0388; F17C2227/0393; F17C2250/00; F17C2250/04; F17C2250/0404; F17C2250/0408; F17C2250/043; F17C2250/0439; F17C2250/06; F17C2250/0605; F17C2250/0631; F17C2250/0636
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
130 words
A hydrothermal, immersion type, indirect fired liquefied petroleum gas vaporization system, comprising: a vessel containing a heat exchange liquid therein at atmospheric pressure, heating means for heating the heat exchange liquid to a temperature sufficient to vaporize the liquefied petroleum gas; an integral vaporizer assembly immersed in the heat exchange liquid for vaporizing the liquefied petroleum gas, the vaporizer assembly including (1) an inlet manifold having a liquefied petroleum gas inlet therein, (2) an outlet manifold having a liquefied petroleum gas vapor outlet therein, ( (3) multiple heat exchange tubes interconnecting the inlet and outlet manifolds, the tubes immersed in the heat exchange liquid, the multiple heat exchange tubes resulting in lowering of the velocity of the exit gas vapor into the outlet manifold and substantially preventing liquid gas carry-over.
Claim 2
Dependent Claim
130 words
A hydrothermal, immersion type, indirect fired liquefied petroleum gas vaporization system, comprising: a vessel containing a heat exchange liquid therein at atmospheric pressure, heating means for heating the heat exchange liquid to a temperature sufficient to vaporize the liquefied petroleum gas; an integral vaporizer assembly immersed in the heat exchange liquid for vaporizing the liquefied petroleum gas, the vaporizer assembly including (1) an inlet manifold having a liquefied petroleum gas inlet therein, (2) an outlet manifold having a liquefied petroleum gas vapor outlet therein, ( (3) multiple heat exchange tubes interconnecting the inlet and outlet manifolds, the tubes immersed in the heat exchange liquid, the multiple heat exchange tubes resulting in lowering of the velocity of the exit gas vapor into the outlet manifold and substantially preventing liquid gas carry-over.
Claim 3
Dependent Claim
143 words
The system of claim 1 wherein the multiple heat exchange tubes are connected to the lower side of the outlet manifold at an angle of about 45* with respect to the horizontal plane and wherein the gas vapor outlet of the manifold is connected to a vapor outlet riser which curves upwardly from its connection to the vapor outlet manifold, the vapor outlet riser having a dip pipe disposed in the upper portion thereof having an open gas vapor inlet facing upwardly opposite the direction of flow of the gas vapor, the dip pipe having a gas vapor outlet extending through the body of the riser; the configuration of the vapor outlet riser, the multiple heat exchange tubes, angular connection of the multiple tubes to the vapor outlet manifold, and the disposition of the dip pipe in the riser preventing liquid gas carry-over.
Claim 4
Dependent Claim
89 words
The system of claim 1 wherein the heating means includes (1) a fire tube immersed in the heat exchange liquid having an inlet end extending through the vessel wall and an outlet end extending through the upper shell, (2) a forced draft power burner connected to to the inlet end of the fire tube, the burner providing hot combustion gases passing through the fire tube for transfer of heat to the heat exchange liquid, the hot combustion gases passing through the tube outlet into the atmosphere at lower temperature.
Claim 5
Dependent Claim
36 words
The system of claim 2 wherein the inlet and outlet manifolds are secured to a frame member serving as a portion of the sidewall of the vessel, the vaporizer assembly being removable for maintenance and replacement.
Claim 6
Dependent Claim
28 words
The system of claim 2 including means connecting the gas vapor outlet of the dip tube with the forced air draft burner for supplying fuel to the burner.
Claim 7
Dependent Claim
327 words
A hydrothermal immersion-type indirect fired liquefied petroleum gas vaporization system, comprising: an insulated cylindrical vessel having a burner end wall and vapor outlet end wall and containing a heat exchange liquid therein atmospheric pressure, a fire tube immersed in the heat exchange liquid having an inlet and extending through the burner end wall and an outlet end extending through an opening in the upper cylindrical shell, a forced draft power burner connected to the inlet end of the fire tube, the burner providing hot combustion gases passing through the fire tube for transfer of heat to the heat exchange liquid and thereafter passing through the outlet end of the fire tube into the atmosphere at lower temperature, an integral vaporizer assembly immersed in the heat exchange liquid for vaporizing liquefied petroleum gas including (1) a frame member adapted to be secured in an opening in the vapor outlet end wall of the vessel, (2) an inlet manifold having a liquefied petroleum gas inlet therein secured to the lower portion of the frame member, (3) an outlet manifold having a liquefied petroleum gas vapor outlet therein secured to the upper portion of the manifold, (4) multiple heat exchange tubes interconnecting the inlet and outlet manifolds, the tubes extending substantially the length of the cylindrical vessel in a multiple pass configuration and immersed entirely in the heat exchange liquid, the heat exchange tubes connected to the lower side of the outlet manifold at an angle of about45* with respect to a horizontal plane, (5) a vapor outlet riser having a J-configuration secured to the gas vapor outlet of the outlet manifold, (6) a dip pipe disposed in the upper portion of the vapor outlet riser having a gas vapor inlet facing upwardly opposite the direction of flow of the gas vapor, the dip pipe having a gas vapor outlet extending through the body of the vapor outlet riser, and control means controlling the temperature of the heat exchange liquid.
Claim 8
Dependent Claim
327 words
A hydrothermal immersion-type indirect fired liquefied petroleum gas vaporization system, comprising: an insulated cylindrical vessel having a burner end wall and vapor outlet end wall and containing a heat exchange liquid therein atmospheric pressure, a fire tube immersed in the heat exchange liquid having an inlet and extending through the burner end wall and an outlet end extending through an opening in the upper cylindrical shell, a forced draft power burner connected to the inlet end of the fire tube, the burner providing hot combustion gases passing through the fire tube for transfer of heat to the heat exchange liquid and thereafter passing through the outlet end of the fire tube into the atmosphere at lower temperature, an integral vaporizer assembly immersed in the heat exchange liquid for vaporizing liquefied petroleum gas including (1) a frame member adapted to be secured in an opening in the vapor outlet end wall of the vessel, (2) an inlet manifold having a liquefied petroleum gas inlet therein secured to the lower portion of the frame member, (3) an outlet manifold having a liquefied petroleum gas vapor outlet therein secured to the upper portion of the manifold, (4) multiple heat exchange tubes interconnecting the inlet and outlet manifolds, the tubes extending substantially the length of the cylindrical vessel in a multiple pass configuration and immersed entirely in the heat exchange liquid, the heat exchange tubes connected to the lower side of the outlet manifold at an angle of about45* with respect to a horizontal plane, (5) a vapor outlet riser having a J-configuration secured to the gas vapor outlet of the outlet manifold, (6) a dip pipe disposed in the upper portion of the vapor outlet riser having a gas vapor inlet facing upwardly opposite the direction of flow of the gas vapor, the dip pipe having a gas vapor outlet extending through the body of the vapor outlet riser, and control means controlling the temperature of the heat exchange liquid.
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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |