US3901062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapor pressure measuring apparatus
Assignee: Texaco Inc
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Filing: 1974-06-28
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Granted: 1975-08-26
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Expires: 1994-06-28
Abstract
Abstract Apparatus measures the vapor pressure of raw crude oil entering a flash tower by measuring operating parameters of the flash tower and its output streams. Flow rates of light component vapor provided by the flash tower and of the flashed crude oil are provided to a vapor pressure sensing network, which also receives signals corresponding to the pressure within the flash tower, to the temperature of the liquid in the flash tower and to the molecular weight and specific gravity of the flashed crude oil. The pressure of the flashed crude oil is then determined utilizing the received signals and equations hereinafter described. The vapor pressure of the flashed crude oil and the vapor pressure of the light component stream, which is substantially constant, is then apportioned according to the relation of the mole flow rates of the light hydrocarbon vapor and the flashed crude oil. The sum of the apportionment is then used to determine the vapor pressure of the raw crude oil.
Inventors
- 👤 Charles R Lynch
- 👤 Charles W Harrison
- 👤 Charles L Kimtantas
- 👤 William D White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:55
CPC Classifications
G; G01; G01N; G01N7/00; G01N7/14; G01N7/16
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
146 words
Apparatus for providing an output signal corresponding to the vapor pressure of a feed fluid entering a process vessel which yields a vapor and a processed liquid, comprising means for sampling the processed liquid and providing signals corresponding to the molecular weight M and the specific gravity G of the processed liquid, means for sensing the flow rates F1 and F2 of the vapor and the processed liquid and providing signals corresponding thereto, means for sensing the pressure P of vapor in the vessel and providing a corresponding signal, means for sensing the temperature T of liquid in the vessel, and means connected to sampling means and to all the sensing means for providing the output signal corresponding to the vapor pressure of the feed fluid in accordance with the F1, F2, P, T, M and G signals from the sampling means and the sensing means.
Claim 2
Dependent Claim
146 words
Apparatus for providing an output signal corresponding to the vapor pressure of a feed fluid entering a process vessel which yields a vapor and a processed liquid, comprising means for sampling the processed liquid and providing signals corresponding to the molecular weight M and the specific gravity G of the processed liquid, means for sensing the flow rates F1 and F2 of the vapor and the processed liquid and providing signals corresponding thereto, means for sensing the pressure P of vapor in the vessel and providing a corresponding signal, means for sensing the temperature T of liquid in the vessel, and means connected to sampling means and to all the sensing means for providing the output signal corresponding to the vapor pressure of the feed fluid in accordance with the F1, F2, P, T, M and G signals from the sampling means and the sensing means.
Claim 3
Dependent Claim
24 words
Apparatus as defined in claim 1 in which the feed fluid is a hydrocarbon liquid, and the processed liquid is a processed hydrocarbon liquid.
Claim 4
Dependent Claim
50 words
Apparatus as defined in claim 2, in which the output signal means includes means connected to the pressure and temperature sensing means for proViding a signal corresponding to a term A in accordance with the P and T signals from the pressure and temperature sensing means and the following equation:
Claim 5
Dependent Claim
95 words
Apparatus as defined in claim 3 in which the output signal means includes means connected to the sampling means and to the flow rate sensing means for providing a signal corresponding to the molar rate MRO of the processed hydrocarbon liquid in accordance with M and G signals from sampling means and the F2 signal from the flow rate sensing means, and means connected to the flow rate sensing means for providing a signal corresponding to the molar rate MRV of the vapor in accordance with the F1 signal from the flow rate sensing means.
Claim 6
Dependent Claim
29 words
Apparatus as defined in claim 4 in which the MRO signal means provides the MRO signal in accordance with the F2, M and G signals and the following equation:
Claim 7
Dependent Claim
40 words
Apparatus as defined in claim 5 in which the output signal means includes summing means connected to the MRO and the MRV signal means for providing the output signal in accordance with the sum of the MRV and MRO signals.
Claim 8
Dependent Claim
19 words
Apparatus as defined in claim 6 further comprising means connected to the summing means for recording the output signal.
Claim 9
Dependent Claim
36 words
Apparatus as defined in claim 6 in which the process vessel is a flash tower, the feed hydrocarbon is raw crude oil, the processed hydrocarbon is flashed crude oil, and the vapor is light components gas.
Claim 10
Dependent Claim
23 words
Apparatus as defined in claim 5 in which the constants K1 through K6 have values of 9.97606, 100, 460, 350 and 2.6385, respectively.
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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 |