Download Carbon Capture and Storage: CO2 Management Technologies by Amitava Bandyopadhyay PDF

By Amitava Bandyopadhyay

Carbon seize and garage (CCS) refers to a suite of applied sciences and strategies for the mitigation, remediation, and garage of commercial CO2 emissions, the main drawing close and virile of the greenhouse gases (GHG). The booklet addresses the tools and applied sciences at the moment being utilized, built, and such a lot wanting extra research.The booklet: Discusses equipment of carbon catch in commercial settings Presents Read more...

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2002; Ali 2005; Paul et al. 2007). This section deals with the modification of NH3 as absorbent with amine additives for CO2 capture. You et al. (2008) investigated the performance of NH3 amine additive–CO2 absorption system especially keeping in mind the loss of NH3 and maintaining or enhancing the CO2 removal efficiency of NH3. They have selected sterically hindered amines like AMP, 2-amino-2-methyl-1,3-propandiol (AMPD), 2-amino2-ethyl-1,3-propandiol (AEPD), and tri(hydroxymethyl) aminomethane (THAM) considering the lower heat required for regeneration of the modified absorbents.

The flue gases after absorber are washed to recover any residual MEA and exhausted to the atmosphere. The CO2-rich solvent is passed through a desorber in Amine vs. Ammonia Absorption of CO2 7 which a counter-current steam stripped off CO2 from the solvent producing a stream of H2O and CO2. The H2O is condensed out leaving a stream of CO2 (purity >99%) that is ready for compression. The CO2-lean solvent, on the other hand, is cooled in a condenser and recycled back to the absorber. Although these reactions relate specifically to primary amines, such as MEA, they can squarely be applied to secondary amines, such as diethanolamine (DEA), by suitably modifying the structural formula of the amine.

High corrosion rate requiring exotic materials of construction for both absorber and stripper columns; and 4. high energy requirement for regenerating the absorbent. Amine vs. Ammonia Absorption of CO2 31 In contrast, aqueous NH3 offers benefits such as 1. having higher loading capacity (mol CO2 absorbed/mol of absorbent); 2. being free from corrosion problem; 3. being stable in the environment of the flue gas; 4. requiring lower liquid to gas flow ratio; 5. having multi-pollutant capture capability—especially SO2 and NOx removal could be integrated with the process of CO2 removal, thus eliminating the necessity of pretreatment of the flue gas in respect of these pollutants as is required for amine-based processes; 6.

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