科研之友
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摘要
An engineered process for scalable manufacture of a calcium aluminum carbonate CO2 sorbent with production amounts of about 1000g per hour has been developed. The process includes mixing and heating, solid-liquid separation, drying and extrusion, crushing and conveying, and calcined molding steps. The sorbent preparation involves the coprecipitation of Ca2+, Al3+, and CO32 under alkaline conditions. By adjusting the Ca:Al molar ratio, a series of Ca-rich materials could be synthesized for use as CO2 sorbents at 750 degrees C. A calcium acetate-derived sorbent exhibited better cyclic stability than sorbents originating from CaCl2 and Ca(NO3)2. The initial sorption capacity increased with CaO concentration. High stability of more than 90% was maintained by the Ca:Al sorbents after 40 looping tests.
- 出版日期2013-5
