Reducing CO₂ Emissions by Using Carburizing Gas Regenerator

抄録

Gas carburized quenching process exhausts much CO₂ because fossil fuels is burned. For this reason, reducing CO₂ is one of the urgent tasks for this process. “carburizing gas regenerator” is an equipment, including polyimide hollow-fiber membrane filter, which allows H₂ to permeate therethrough. As H₂ is generated during carburizing process, by circulating carrier gas using this equipment, H₂ is eliminated by filter, and H₂ eliminated carrier gas is able to reuse to the furnace.
Using carburizing gas regenerator enables to reduce total amount of carrier gas and CO₂ emissions up to 50%, and get less variation of hardness and carbon concentration among carburized quenching specimens.