Methods, Systems and Apparatus for Carbon Capture, Utilization and Storage

There are provided CCUS systems and methods having gas-to-liquid systems and processes, e.g., for processing flare gas to methanol. In these systems an air-breathing engine reformer produces a syngas intermediate that is further converted to methanol in a downstream synthesis step. The CCUS system has a CO2 separator that receives a gas-phase stream and separates this stream into two streams, a CO2-rich stream and a CO2-depleted stream. The CCUS systems may further have a hydrogen separator that receive a gas-phase stream and separates that stream into a hydrogen-rich stream and a hydrogen-depleted stream. The CO2-rich stream can be used for use in EOR, storage or both.