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Dry Scrubbing: Most Profitable Markets

The largest market for dry scrubbing is to capture SO2 from coal fired power plants. Wet scrubbing is used by 95 percent of the coal plant operators. The reason is the much lower reagent cost and the opportunity to generate a byproduct (gypsum). Dry scrubbing offers much lower capital cost as well as reduction in water consumption and pollution. In many cases the dry scrubbing option is eliminated by default. Limestone for wet scrubbing is widely available at a predictable cost. Reasonably priced lime for dry scrubbing may only be available if a lime supplier agrees to build a dedicated kiln just for a plant or several plants in a region. The catalytic filter with dry sorbent injection (DSI) is now proven in many smaller applications. The recent introduction of 6 meter long candles makes it a candidate for power plants as well as the smaller applications. One vessel instead of three is used to reduce NOx, SO2, other acid gases, and particulate. Furthermore clean hot gas at 600F is available for energy recovery.

Revision Date:  4/29/2019

Tags:  McIlvaine, Dry Scrubber, Market

Scrubber Market Veering From Hardware to Consumables

Dry scrubber capital investment will be just under $600 million in 2015. This is less than 10 percent of the total scrubber capital investment. But behind these numbers is a new path for the industry. Dry scrubbing is a way to capture acid gases at lower capital cost than with absorbers. However, purchasers face much higher reagent costs. Limestone used in wet systems is a fraction of the $200/ton price of lime used in dry scrubbers. These developments are tracked in the McIlvaine publication Scrubber/Adsorber/Biofilter World Markets.

Revision Date:  8/29/2014

Tags:  McIlvaine, Scrubber, Consumables, Market