Simulation of associated gas combustion in a gas engine as a substitute for gas from gas wells.

Gas fuel from gas wells is burned in gas engines so that the resulting mechanical energy can drive compressors in gas fields. As the quantity of gas from gas wells decreases over time, associated gas is an attractive substitute. The purpose of this research is to obtain a safe and comply-to-government regulation emissions associated gas combustion without changing the ignition timing. This is achieved by setting the value of the air-to-fuel ratio in gas engines without changing the ignition timing. The air-to-fuel ratio range that provides the lower emissions than the government limit and the longer IDT than the existing gas is the recommended AFR range. The research method is to simulate the kinetics model of the oxidation and combustion of the associated gas. The associated gas in this research is that in a gas field that has been dehydrated in the previous unit. The gas engine in this research is that in the gas field that currently uses existing gas from gas wells to drive compressors. The results show that the combustion of the dehydrated associated gas with the CO₂ mole fraction being 0.5325 in the gas engine is safe and releases the emissions that comply to government regulation if the AFR is set to less than 7.5 without changing the ignition timing. [ABSTRACT FROM AUTHOR]