NEWS RELEASE                                                                                                    JANUARY 2015

Dry Scrubber Market Will Grow At 9 Percent/Yr.

Dry scrubbers account for less than 8 percent of scrubber sales but, with near double-digit growth over the next decade, this segment will be a leader.  This is the conclusion of the McIlvaine Company in Scrubber/Adsorber/Biofilter World Markets.

(Revenues $ Millions)

Dry scrubbers will take market share away from the absorber segment due to their high efficiency on aerosols, the development of new designs, and increasing concerns about water pollution with the use of absorber technology.

The industrial scrubber forecasts do not include coal-fired power plants.  These power plants are also moving to dry scrubbing. However, this application is equal to all the industrial applications in terms of market size and is treated separately in FGD World Markets.

Dry scrubbers have taken most of the market away from absorbers in waste-to-energy plants. Operators of kilns in cement, mining and chemical processing are also opting for dry scrubber technology.   There are three dry scrubber options.  One is the spray drier absorber (SDA).  Another is the circulating dry scrubber (CDS). A third alternative is dry sorbent injection (DSI) in the ductwork.

The SDA technology includes the same spray drier technology used to make instant coffee and powdered soft drinks.  The CDS technology takes several different forms. One is a circulating fluid bed. The DSI is a simple process which necessitates injecting a powdered sorbent into the duct ahead of the particulate collector.

Industrial boiler and cement plant operators in the U.S. are opting for dry sorbent injection even though the operating costs (sorbent consumption) are quite high.  The reason is the uncertainty about the future regulations on greenhouse gases. Operators of industrial boilers may end up replacing solid waste boilers with gas turbines to meet future environmental limits. So a big capital investment in the SDA or CDS technology is risky.

China has just started to switch from wet absorbers to dry scrubbers.  The country operates the largest CDS scrubbers ever built for coal-fired power plants. It uses dry scrubbers at most waste incineration plants and is looking to do so as it invests in scrubber technology for industrial boilers.

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