SOx and NOx removal

Some 10% of the sulfur present in the FCC feed will end up in the coke. These sulfur species will be converted to SOx in the regenerator when the spent catalyst is burnt clean. Depending on the FCC feedstock and the SOx emission environmental regulations, measures have to be taken to reduce the SOx emission from the FCCU. Modern scrubbers are available to cope with this but this requires capital investment. Alternatively the FCC feed can be hydrotreated to reduce the feed sulfur and consequently the SOx emission and improve FCC yield structure. Albemarle’s portfolio of SOx removal additives provides a viable no capital option for lowering SOx emissions.

As a side effect of the CO promotion, NOx might be formed due to the conversion of nitrogen compounds present in the coke on the spent catalyst. For high nitrogen containing feedstocks the NOx emission limit might be exceeded. The specially designed FCC additive KDNOx 2001 effectively removes NOx from the regenerator flue gas.

Product name		Characteristic(s)	Contact us
KDSOx 2000		Advanced additive to reduce SOx emission
KDSOx 2002		Advanced performance
SOx Down		Latest advancement
KDNOx 2001		NOx removal from FCC flue gases