US5223714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for predicting properties of multi-component fluid blends
Assignee: Marathon Petroleum Co LP
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Filing: 1991-11-26
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Granted: 1993-06-29
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Expires: 2011-11-26
Abstract
Abstract The octane of components used in the blending of gasoline is used to predict the octane of the finished gasoline blend by measuring absorbances, preferably in the near-infrared range, and metering the fraction of each blending component as independent variables and performing a multiple regression on the data modeling the dependent variable of the various octanes. Percent aromatics in diesel fuel and other finished chemical or physical properties of the finished blend can be controlled by feed-forward and/or feed-back techniques.
Inventors
- 👤 Steven M. Maggard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:41
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/31; G01N21/35; G01N21/359; G01N21/3504; G01N21/3577; G01N33/00; G01N33/26; G01N33/28; G01N33/2829; F; F02; F02B; F02B3/00; F02B3/06; Y; Y10; Y10T; Y10T436/00; Y10T436/12
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
130 words
A process for controlling the blending of a plurality of fluid components comprising in combination the steps of: a) measuring an absorbance at selected wavelengths in the infrared indicative of a property of each of said plurality of fluid components to be blended together; b) outputting a signal indicative of each said absorbance for each of said components; c) optionally converting said absorbance signal indicative of said property to a first or higher mathematical derivative signal; d) weightedly adding substantially linearly the absorbance signals or the first powers of said derivative signals to provide a signal indicative of the blended value of said property after said components are blended together; e) controlling the quantity of said plurality of fluid components in response to said signal indicative of said blended value.
Claim 2
Dependent Claim
130 words
A process for controlling the blending of a plurality of fluid components comprising in combination the steps of: a) measuring an absorbance at selected wavelengths in the infrared indicative of a property of each of said plurality of fluid components to be blended together; b) outputting a signal indicative of each said absorbance for each of said components; c) optionally converting said absorbance signal indicative of said property to a first or higher mathematical derivative signal; d) weightedly adding substantially linearly the absorbance signals or the first powers of said derivative signals to provide a signal indicative of the blended value of said property after said components are blended together; e) controlling the quantity of said plurality of fluid components in response to said signal indicative of said blended value.
Claim 3
Dependent Claim
26 words
A process according to claim 1 wherein said absorbance signal is converted to a first or higher derivative and the first powers thereof are weightedly added.
Claim 4
Dependent Claim
16 words
A process according to claim 1 wherein said absorbance comprises absorbance measured in the near-infrared range.
Claim 5
Dependent Claim
11 words
A process according to claim 1 wherein said components are fuels.
Claim 6
Dependent Claim
12 words
A process according to claim 1 wherein said property is boiling point.
Claim 7
Dependent Claim
13 words
A process according to claim 1 wherein said property is end boiling point.
Claim 8
Dependent Claim
11 words
A process according to claim 1 wherein said property is octane.
Claim 9
Dependent Claim
12 words
A process according to claim 1 wherein said property is cetane number.
Claim 10
Dependent Claim
12 words
A process according to claim 1 wherein said property is aromatic content.
Claim 11
Dependent Claim
12 words
A process according to claim 1 wherein said property is olefin content.
Claim 12
Dependent Claim
20 words
A process according to claim 1 wherein said absorbances of said plurality of fluid components are isonumeric for each component.
Claim 13
Dependent Claim
12 words
A process according to claim 1 wherein said property is vapor pressure.
Claim 14
Dependent Claim
13 words
A process according to claim 1 wherein said property is Reid Vapor Pressure.
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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) | 1996-06-28 | 1996-12-28 | 1997-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-28 | 2000-12-28 | 2001-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-28 | 2004-12-28 | 2005-06-29 | $7700.00 | Window Closed / Lapsed |