Economic and Technical Analysis of Power to Gas Factory Taking Karamay as an Example

Power to gas (PTG) refers the technology of converting power into energy-storage gas, which can absorb excess when there is and release needed. Based on carbon dioxide (CO2) emission Karamay City in Northwest China, this study designed a process flow CO2 absorption process, hydrogen methanation PTG technology. The results show that efficiency was 91.5%, 77.5%. heat recovery module set during total recovered 17.85 MW. cost producing synthetic natural (SNG) factory 1782 USD/ton. In terms cost, production from electrolyzed water accounted for largest proportion. product profit, sale pure oxygen part profit. At present, reduction index profit brought by SNG small future, with technological progress, industrial upgrading improvement trading market, expected become one ways achieve carbon-emission-reduction targets.