Versatile systems for continuous in-line blending of butane and petroleum

  • US 9,207,686 B2
  • Filed: 04/20/2012
  • Issued: 12/08/2015
  • Est. Priority Date: 02/09/2001
  • Status: Active Grant
First Claim
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1. A method for in-line blending of gasoline and a volatility modifying agent comprising:

  • a) providing a continuously flowing gasoline stream that comprises;

    i) a plurality of batches of different gasoline types;

    ii) a gasoline flow rate that varies over time; and

    iii) a plurality of gasoline vapor pressures;

    b) providing an allowable vapor pressure;

    c) providing a stream of said agent that comprises an agent vapor pressure;

    d) periodically determining said gasoline vapor pressure;

    e) periodically determining said gasoline flow rate;

    f) calculating a blend ratio based upon said agent vapor pressure, said gasoline vapor pressure, and said allowable vapor pressure; and

    g) blending said agent stream and said gasoline stream at a blending unit at said blend ratio to provide a blended gasoline stream having a blended vapor pressure less than or equal to said allowable vapor pressure.

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