CARBON-DIOXIDE RECOVERY FROM INDUSTRIAL-PROCESSES

The ongoing human-induced emission of carbon dioxide (CO2) threatens t o change the earth's climate. One possible way of decreasing CO2 emiss ions is to apply CO2 removal, which involves recovering of carbon diox ide from energy conversion processes and storing it outside the atmosp here. Since the 1980's, the possibilities for recovering CO2 from ther mal power plants received increasing attention. In this study possible techniques of recovering CO2 from large-scale industrial processes ar e assessed. In some industrial processes, e.g. ammonia production, CO2 is recovered from the process streams to prevent it from interfering with the production process. The CO2 thus recovered can easily be dehy drated and compressed, at low cost. In the iron and steel industry, ca rbon dioxide can be recovered from blast furnace gas. In the petrochem ical industry CO2 can be recovered from flue gases, using low-temperat ure heat for the separation process. Carbon dioxide can be recovered f rom large-scale industrial processes and in some cases the cost of rec overy is significantly less than CO2 recovery from thermal power plant s. Therefore this option should be studied further and should be consi dered if carbon dioxide removal is introduced on a wide scale.