Sources of Carbon Dioxide Recovery

The most important criterion for the economic efficiency of a CO2 source is the CO2 partial pressure. Gas mixtures which are suitable for the economical recovery of liquefied CO2 with high purity are understood to be carbon dioxide sources preferably with a CO2 partial pressure 1 bar. Table 6.1 shows examples of CO2 sources listed by decreasing CO2 partial pressure. 

A criterion for not selecting a CO2 source is the presence of additional gas components the removal of which may be costly. Some examples of such source-specific secondary components are given in Table 6.2. 

COj-fraction from add-gas scrubbings in ammonia or other synthesis gas plants or H,-generation plants (cf. Section 5.2) 1.0 to 1.2 bar 

from underground deposits (also in mixtures with hydrocarbons) 1 to 30 bar 

Natural gas purification plants, so-called sweetening plants 1.0 to 1.2 bar 

---