The market for selective catalytic reduction (SCR) systems
and replacement catalyst will reach a record $7.6 billion this
year (Fig. 2). This is according to the latest forecast
published by the McIlvaine Co.
Fig. 2. The market for
catalytic reduction (SCR) systems
and replacement catalyst will reach a
record $7.6 billion this year.
Sales of systems are projected at $6.1 billion. This
includes the ammonia-injection system, the catalyst, housing
and all the ductwork and other components contracted with SCR
system suppliers. McIlvaine says sales of catalyst are rising
steadily. They will exceed $1.5 billion in 2011 mainly due to
the replacement needs. The largest application is coal-fired
boilers where catalyst life is less than five years. Gas
turbines are another large application. Recently there has been
a big market in the US for SCR systems for peaking turbines.
This has created a need for high-temperature catalyst. Several
catalyst suppliers have developed a product to meet this need.
However, many purchasers are avoiding the risk by using
conventional catalyst and bleeding in air to reduce
Cement industry. The cement industry is the
next big target for NOx control. There are some SCR systems
installed on cement kilns in Europe and a number slated for
future installation in the US. Waste incinerators and nitric
acid plants are other applications. Biomass-fired boilers
present problems because of the poisoning potential of
constituents in the fuel.
Asia is the largest geographical market thanks to a big
program in China to install SCR systems on new boilers and
retrofit SCR on older boilers in the more populated areas.
Japan, South Korea and Taiwan are also significant markets.
The market in the US is quite active due to recent
regulations. It promises further growth based on new ambient
air quality rules. These will force individual states to
require NOx control not only on large coal-fired boilers but on
industrial boilers as well.
In Europe the biggest near-term
potential is NOx control on lignite-fired boilers which were
not equipped with SCR originally due to the lower NOx emissions and high cost. New EU
regulations require the larger lignite-fired boilers to reduce
NOx by 2016. HP