System, method, and apparatus for determining air emissions during pig receiver depressurization

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United States of America Patent

PATENT NO 10168255
SERIAL NO

16003250

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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System, method, and apparatus embodiments characterize potential air emissions during the pig receiver depressurization. The mass flow rate, pressure, and temperature of exhaust gas released from the pig receiver are ascertained using a mass flow meter, pressure gauge, and temperature gauge, respectively. A flow meter and control valve regulate flow of exhaust gas through a sampling line and into a grab sample collection train. The grab sample collection train includes grab sample containers (e.g., piston cylinders, double-ended cylinders, and evacuated canisters) that collect exhaust gas samples over a range of pressures. The exhaust gas samples are used to determine the concentrations of gas components in the exhaust gas over the range of pressures. These concentrations are interpolated and/or extrapolated to provide a concentration versus pressure curve for each identified component in the exhaust gas. The ascertained mass flow rate and gas concentration curve are used to characterize potential mass emissions of each gas component during pig receiver depressurization.

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Patent Owner(s)

Patent OwnerAddress
MARKWEST ENERGY PARTNERS L P1515 ARAPAHOE STREET TOWER 1 SUITE 1600 DENVER CO 80202

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Johnsen, David Denver, US 9 133

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