Internal Data Search by Product

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

Flash Calcination of Limestone in a bench-scale Sorbent Activation Process (SAP) Unit

This 2012 research at the University of Illinois with funding from EPRI addresses producing quicklime by a novel process to remove Sox and HCl from flue gas streams.

Revision Date:   4/25/2019

Tags:  221118 - Other Electric Power , 221112 - Fossil Fuel 化石燃料, EPRI, University of Illinois, Lime, Calciner, Dry Scrubber

HZ-inova Xerosorp captures acid gases, removes NOX and recovers heat

This device includes sodium bicarbonate injection into a reactor, recovery in a fabric filter and reinjection of captured solids. The cleaned gas then passes into a catalyst system which is efficient at removing NOx at temperatures as low as 200C. This catalyst is regenerated by including multiple modules. One module is regenerated while another module is cleaned. Cited advantages are • Very compact design • Reaches lowest emissions • Lowest Bicar consumption due to residue circulation • Damping of peaks due to high residue buffer capacity in the recirculation system • High energy efficiency due to: – Low pressure drop – Low regeneration rate of catalyst in offline mode  – Tail end heat recovery.

Revision Date:   3/11/2019

Tags:  562213 - Solid Waste Combustors and Incinerators , Hitachi Zosen Inova, Dry Scrubber, SCR