SO3 and Mercury Mitigation
Dry Sorbent Injection

Introduction

These days a permit is required for any new Pollution Control Project. Effectively any change to an existing power plant triggers New Source Review (NSR). The NSR process is used by regulators at both the federal and state levels to establish the performance/emissions standards the facility must comply with in order to remain an operating facility. For major modifications to existing major stationary sources, the Code of Federal Regulations (40 CFR 52.21(j)(3)) requires that Best Available Control Technology (BACT) be applied for each regulated NSR pollutant for which there will be a significant net emission increase at the source. The definition of "regulated NSR pollutant" (40 CFR 52.21(b)(5)) includes "any pollutant for which a national ambient air quality standard [NAAQS – see Appendix] has been promulgated." The requirement applies to each proposed emitting unit at which a net emissions increase in the pollutant would occur as a result of the physical change or change in the method of operation of the unit.

The EPA began encouraging utility companies to achieve aggressive standards of sulfuric acid mist (SAM) emissions from existing facilities in 2009. In May 2008, EPA issued a rule addressing several NSR program requirements for sources that emit PM2.5 and the pollutants that contribute to its formation, i.e. precursors (such as sulfuric acid mist). On July 15, 2008 the rule became effective and the new PM2.5 provisions applied immediately. This rule required states to account for condensable gases that could form particles in PM2.5 emissions limits in PSD or nonattainment area NSR permits beginning January 1, 2011. In 2006, EPA previously revised the NAAQS for fine particles by lowering the daily standard to 35 micrograms per cubic meter and retaining the current annual standard of 15 micrograms per cubic meter. As a result, we are seeing increased emphasis on SAM around the industry. Utilities are faced with installing state-of-the-art control technology for SO3 mitigation at existing plants that are subject to NSR and/or undergoing a major modification.

Cost-effective SO3 Mitigation

CoaLogix integrates leading-edge technologies, a highly skilled workforce, and more than 160 years of combined senior management experience in the environmental and power generation industries to provide innovative, cost-effective solutions that help our customers achieve and maintain compliance with increasingly stringent environmental regulations.

CoaLogix owns SCR-Tech, LLC which is a leading provider of selective catalytic reduction (SCR) management services and catalyst regeneration technologies used by coal-fired power plants to reduce nitrogen oxides (NOx) emissions. SCR-Tech LLC applies the latest technologies to improve the performance characteristics and extend the life of DeNOx catalyst. With 20,000MW of managed SCR's and 33,000MW of regenerated DeNOx catalyst SCR Tech has emerged as a trusted advisor to the power generation industry.

We have assembled a very capable alliance of experienced organizations to respond to the SAM mitigation need. CoaLogix Tech LLC has an agreement with FLSmidth to provide SO3 and mercury mitigation technologies to the coal-fired power generation market. With this agreement, CoaLogix Tech became the exclusive partner for selling and executing FLSmidth's leading SO3 reduction technology into the power generation market.

With 128 years of experience, FLSmidth is the leading supplier of equipment and services to the cement and minerals industries, which face similar emissions challenges to energy production facilities. The partnering companies' combined SO3, nitrogen oxide and mercury remediation technologies are already installed in plants generating over 60,000MW of coal fired generation, which represents about 25 percent of the coal generation market in the United States.

The extensive know-how developed by FLSmidth effects reduction in emissions via the reliable and discrete delivery of dry sorbents in power plants. FLSmidth products already mitigate SO3 in generating units producing over 16,000MW of power, in addition to a number of mercury reduction units. FLSmidth's presence in the power industry is heavily focused on reagent transport and injection systems for pollution control. Our mobile Reagent Injection System (shown here) has been used in parametric testing for SO3 mitigation.

There are special considerations that must be taken into account when unloading, storing, conveying and injecting dry sorbents, and the experience that resulted from these successful projects is directly applied for your proposal. The end result is that your reagent is protected from moisture and carbonation due to heat, is reliably delivered and is accurately metered to the injection point.

Additional information, brochures, and bulletins of FLSmidth Pneumatic Transport's products and services are available for download at http://www.conveyorspneumatic.com.