| 主权项 |
1) A method for making fuel enriched by mixed pentanes comprising the steps:
a) providing a fuel blending unit characterized by:
i) a first enclosed conduit transmitting a fuel stream, andii) a second enclosed conduit transmitting an additive stream, wherein the additive stream comprises n-pentane and isopentane, andiii) an outlet in the second enclosed conduit forming a fluid connection with an inlet in the first enclosed conduit, b) providing:
i) a volatility for the additive stream (the “additive stream volatility”),ii) a flow rate for the fuel stream (the “fuel stream flow rate”),iii) an octane value for the fuel stream (the “fuel stream octane value”), andiv) a maximum blended volatility for the fuel stream (the “maximum blended volatility”), c) measuring the fuel stream for its actual volatility (the “fuel stream volatility”), d) calculating a rate (the “additive stream flow rate”) at which the additive stream can be added to the fuel stream so as not to exceed the maximum blended volatility, wherein the calculating is based upon:
i) the fuel stream volatility,ii) the additive stream volatility, andiii) the fuel stream flow rate, and e) adding the additive stream to the fuel stream at the additive stream flow rate at the fluid connection to make pentane enriched fuel having a final octane value, wherein the additive stream comprises isopentane and n-pentane in a ratio and quantity that will not cause the final octane value to drop below the fuel stream octane value. |
