You are here:
MEASUREMENT AND PREDICTION OF THE RESISTIVITY OF ASH/SORBENT MIXTURES PRODUCED BY SULFUR OXIDE CONTROL PROCESSES
Citation:
Young, R. P. MEASUREMENT AND PREDICTION OF THE RESISTIVITY OF ASH/SORBENT MIXTURES PRODUCED BY SULFUR OXIDE CONTROL PROCESSES. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/7-91/009 (NTIS 92-126812), 1991.
Impact/Purpose:
information
Description:
The report describes the development of (1) a modified procedure for obtaining consistent and reproducible laboratory resistivity values for mixtures of coal fly ash and partially spent sorbent, and (2) an approach for predicting resistivity based on the chemical composition of the sample and the resistivities of the key compounds in the sample that are derived from the sorbent. urnace and cold-side sorbent injection technologies for reducing the emission of sulfur oxides from electric generating plants firing medium- to high- sulfur coal are under development for retrofit applications. The particulate resulting from injecting this sorbent will be a mixture of coal fly ash and partially spent sorbent. The presence of this sorbent causes the resistivity of the mixture to be significantly higher than that of the fly ash alone. Since higher resistivity dusts are more difficult to collect in an electrostatic precipitator (ESP), accurate knowledge of the resistivity of the mixture is needed to determine if the ESP will operate within an acceptable efficiency range.