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Blending of economic, reduced oxygen, winter gasoline

a gasoline and economic technology, applied in the field of fuels, can solve the problems of removing oxygenates and considerable obstacles

Inactive Publication Date: 2010-09-07
CHEVROU USA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The present invention provides a method for blending gasoline to create a low-emission gasoline that is suitable for use in the winter months and meets the requirements of the California Predictive Model. The method involves blending streams from a refinery in a controlled manner to maintain compliance with the model. The resulting gasoline is substantially free of oxygenates and contains low amounts of sulfur. The invention also provides a novel, winter gasoline that is in compliance with the model."

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 while also meeting the California Predictive Model specifications.
MTBE in particular is a high octane, low boiling, moderate RVP component and its elimination presents considerable obstacles to successfully blending a gasoline, particularly a high octane gasoline.

Method used

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Examples

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Effect test

example 1

[0083]A number of different blended gasolines were made using the blending system depicted in FIG. 1, with an on-line analyzer. All of the various blended gasolines, Nos. 1-23, were made at different times using different component streams from a refinery. All of the blended gasolines, however, are deemed to be in compliance with the California Phase 2 and Phase 3 Predictive Model.

[0084]The various component streams used were conventional gasoline component streams including:[0085](i) light petroleum-butane / pentane;[0086](ii) pentane / hexane;[0087](iii) hydrobate (reformer feed);[0088](iv) reformate;[0089](v) FCC gasoline;[0090](vi) alkylate;[0091](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.

[0092]Provided below in Table...

example 2

[0094]A premium blend winter gasoline was prepared on a laboratory scale using normal butane, normal pentane, isopentane, toluene, reformate, FCC light, isomerate, rerun alkylate and whole alkylate as the components, with the properties being measured. Such a gasoline composition, as shown in Example 1, could also be prepared using the blending system of the present invention, i.e., as depicted in FIG. 1. The gasoline blend had the following qualities:

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Abstract

Provide is a novel gasoline composition which is substantially free of oxygenates and is in compliance with the California Phase 3 Predictive Model. The gasoline composition is suitable for use in the winter months, i.e., having a Reid vapor pressure in the range of greater than 7.0 to about 15.0 psi. The method for blending the gasoline comprises blending streams from a refinery in a controlled manner to maintain compliance with the California Phase 3 Predictive Model.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation of application Ser. No. 09 / 603,556, filed on Jun. 26, 2000, abandoned.[0002]The present application is a continuation-in-part application of U.S. Ser. No. 09 / 240,059, filed on Jan. 29, 1999, abandoned.BACKGROUND OF THE INVENTION[0003]1. Field of the Invention[0004]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 Phase 3 Predictive Model, as well as ASTM D4814, and is also substantially tree of oxygen-containing compounds.[0005]2. Brief Description of the Prior Art[0006]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...

Claims

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Application Information

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