Blending of economic, reduced oxygen, summer gasoline

a gasoline and economic technology, applied in the field of fuels, can solve problems such as the elimination of oxygenates

Inactive Publication Date: 2005-12-06
CHEVROU USA INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The difficulty arises in eliminating oxygenates, as a significant difference in blending is required in the absence of oxygenates to achieve the requisite octane rating and fluid vapor pressure while also meeting the California Predictive Model specifications.
MTBE in particular is a high octane component and its elimination presents considerable obstacles to successfully blending a high octane (90 or greater octane number (R+M) / 2) summer gasoline.

Method used

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  • Blending of economic, reduced oxygen, summer gasoline
  • Blending of economic, reduced oxygen, summer gasoline
  • Blending of economic, reduced oxygen, summer gasoline

Examples

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example

[0079]A blended gasoline was made using the blending system depicted in FIG. 1, with an on-line analyzer. The blended gasoline is deemed to be in compliance with the California Predictive Model.

[0080]The various component streams used were conventional gasoline component streams including:[0081](i) light petroleum-butane / pentane;[0082](ii) pentane / thexane;[0083](iii) hydrobate (reformer feed);[0084](iv) reformate;[0085](v) FCC gasoline;[0086](vi) alkylate;[0087](vii) toluene.

All of the foregoing component streams were provided from the same refinery. However, any one of the streams used, and particularly toluene, can be provided from an outside source, but it is preferred for the present invention that the component streams originate as streams in the refinery on site.

[0088]Provided below are the qualities of the gasoline successfully blended in accordance with the present invention. The example demonstrates that such gasoline, suitable as high octane summer gasoline, can be success...

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Abstract

Provided is a novel high octane summer gasoline composition which is substantially free of oxygenates, and is in compliance with the California Predictive Model. The gasoline composition is suitable for use in the summer, i.e., having a Reid vapor pressure of 7.0 or less. The method for blending the gasoline comprises blending streams from a refinery in a controlled manner to maintain compliance with the California Predictive Model.

Description

[0001]This application is a continuation of application Ser. No. 09 / 240,060, filed on Jan. 29, 1999.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to fuels, particularly gasoline fuels which are substantially oxygenate free. More specifically, the present invention relates to a low-emission gasoline fuel which complies with the California Predictive Model, as well as ASTM D4814, and is also substantially oxygenate free.[0004]2. Brief Description of the Prior Art[0005]One of the major environmental problems confronting the United States and other countries is atmospheric pollution caused by the emission of pollutants in the exhaust gases and gasoline vapor emissions from gasoline fueled automobiles. This problem is especially acute in major metropolitan areas where atmospheric conditions and the great number of automobiles result in aggravated conditions. While vehicle emissions have been reduced substantially, air quality still needs im...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): C10L1/04C10L1/06
CPCC10L1/06
Inventor BRUNDAGE, SCOTT R.KOHLER, DAVID A.
Owner CHEVROU USA INC
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