Versatile systems for continuous in-line blending of butane and petroleum
First Claim
1. A system for in-line blending of gasoline and butane comprising:
- a) a gasoline stream having a volumetric flow rate that varies over time;
b) a butane stream;
c) a blending unit for blending said gasoline stream and said butane stream at an actual blend ratio and an actual blend rate to yield a blended gasoline stream;
d) an upstream vapor pressure sensor in sensory communication with said gasoline stream upstream of said blending unit; and
e) one or more information processing units (IPUs) in informational communication with said upstream vapor pressure sensors, logically programmed to calculate a calculated blend ratio and calculated blend rate based upon vapor pressure and volumetric flow rate of said gasoline stream, and for communicating said calculated blend ratio and calculated blend rate to said blending unit;
wherein said blending unit periodically receives said calculated blend ratio and calculated blend rate from said one or more IPUs, and adjusts the actual blend ratio and actual blend rate to coincide with said calculated blend ratio and calculated blend rate.
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Reexamination
Accused Products
Abstract
A system and method are provided for in-line processes of blending butane into gasoline streams, and for blending butane into a gasoline stream at any point along a petroleum pipeline. The invention additionally provides a method for measuring the vapor pressure and vapor to liquid ratio of the gasoline, both upstream and downstream of the blending operation, as well as the sulfur content of the butane entering the blending operation. The blending operation can be controlled to ensure that the blended gasoline meets EPA requirements for vapor pressure and sulfur content of gasoline. The invention further provides a method for accessing and monitoring the operation off-site.
49 Citations
10 Claims
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1. A system for in-line blending of gasoline and butane comprising:
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a) a gasoline stream having a volumetric flow rate that varies over time; b) a butane stream; c) a blending unit for blending said gasoline stream and said butane stream at an actual blend ratio and an actual blend rate to yield a blended gasoline stream; d) an upstream vapor pressure sensor in sensory communication with said gasoline stream upstream of said blending unit; and e) one or more information processing units (IPUs) in informational communication with said upstream vapor pressure sensors, logically programmed to calculate a calculated blend ratio and calculated blend rate based upon vapor pressure and volumetric flow rate of said gasoline stream, and for communicating said calculated blend ratio and calculated blend rate to said blending unit; wherein said blending unit periodically receives said calculated blend ratio and calculated blend rate from said one or more IPUs, and adjusts the actual blend ratio and actual blend rate to coincide with said calculated blend ratio and calculated blend rate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification