Emissions collection system

A system to collect hydrocarbon emissions, the system comprising:

• a pressure regulator configured to:
• receive hydrocarbon emissions at an input pressure from an emissions source;
• maintain the input pressure of the hydrocarbon emissions;
• and
• pass the hydrocarbon emissions at a pump suction pressure;
• an Electric Operated Dual Diaphragm (EODD) vapor pump configured to:
• ingest the hydrocarbon emissions at the pump suction pressure;
• pressurize the hydrocarbon emissions to an output pressure;
• and
• transfer the hydrocarbon emissions at the output pressure for delivery to a hydrocarbon emissions collector;
• a pump pressure gauge configured to:
• measure the pump suction pressure of the hydrocarbon emissions;
• and
• report the pump suction pressure;
• and
• a process controller configured to:
• control a motor speed of the EODD vapor pump to maintain the hydrocarbon emissions at the pump suction pressure.

One or more non-transitory computer readable storage media having program instructions stored thereon to implement a control scheme for an emissions collection system, wherein the program instruction, when executed by a computing system, direct the computing system to perform operations, the operations comprising:

• obtaining a pump suction pressure measurement that indicates pump suction pressure to an Electric Operated Dual Diaphragm (EODD) vapor pump, wherein the EODD vapor pump pressurizes and transfers captured hydrocarbon emissions;
• controlling a motor speed of the EODD vapor pump to maintain the pump suction pressure at a set point based on the pump suction pressure measurement;
• obtaining an input pressure measurement of the hydrocarbon emissions, an output pressure measurement of the hydrocarbon emissions, and an oxygen concentration measurement of the hydrocarbon emissions;
• comparing the input pressure measurement to an input pressure threshold, the output pressure measurement to an output pressure threshold, and the oxygen content measurement to an oxygen content threshold;
• detecting that one or more of the input pressure threshold, the output pressure threshold, or the oxygen content threshold are triggered;
• in response, transferring control signals to deactivate the EODD vapor pump, close a pump input valve, close a pump output valve, and open a bypass valve to release the hydrocarbon emission to atmosphere.