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Industrial Boiler MACT: CEM Requirements by Dan Kietzer, Sick - Hot Topic Hour November 19, 2010
Dan Kietzer, Environmental Market Manager at Sick Maihak, Inc., covered CEMS for particulate and CO and CEMS requirements. The company has sold more than 50 PM CEMS using the scattered light principle to power plants in the U.S. Some were to meet consent decrees which mandated installation of PM CEMS. The scattered light approach can provide accurate mass measurement in either dry or wet stacks. In wet stacks the sample gas is withdrawn and heated prior to measurement. An insitu CEMs for CO can also measure CO2 and H2O.
Revision Date: 11/19/2010
Tags: 221112 - Fossil Fuel 化石燃料, SICK Process Automation, Mass Monitor, Carbon Dioxide, CEM, MACT, Industrial Boiler
J. Patrick Stevens, Associate and Senior Consultant at Golder Associates Inc., told participants about a survey of 16 biomass-fired boilers in the wood products industry to determine whether or not they would meet the proposed existing source Boiler MACT limits for biomass-fired boilers. CO was one pollutant that would create a challenge. Four boilers would require no improvement. Twelve boilers will require from 13 to 79 percent reduction in CO. Nine of these would require end of pipe controls while three could improve fuel handling and combustion.
Revision Date: 11/19/2010
Tags: 221112 - Fossil Fuel 化石燃料, Golder Associates, Carbon Monoxide, MACT, Wood-Fired Boilers, Industrial Boiler
David W. South, Manager of Business Development at Amerex, drew from a considerable bank of experience the company has gained with some 50 MACT related boiler installations in the last five years. One unit on a PC boiler with carbon injection and a fabric filter is using 2.2 lbs/MMacf of B-PAC. Inlet mercury is 20 lbs/TBtu versus 2.5 lbs/TBtu on the outlet. Another with only 2.0 lbs/MMacf is reducing mercury from 25 lbs/TBtu to less than 2 lbs/TBtu.
Revision Date: 11/19/2010
Tags: 221112 - Fossil Fuel 化石燃料, Amerex, Spray Dryer, Fabric Filter, Dry Sorbent Injection, MACT, Industrial Boiler
Jon Miller, Technical Support Engineer at Albemarle Corporation, explained that M-PACT is an equipment package to inject activated carbon at much lower cost than a custom design. The first M-PACT unit was sold in 2007 and is providing reliable 90 percent mercury reduction. There are a number of components in the larger systems which are critical. One is the choice of blower for the pneumatic conveying. A regenerative blower is less expensive but has a lower pressure output and is less tolerant of dirty environments. A Roots type PD blower is more expensive but capable of higher pressures and will tolerate some dust.
Revision Date: 11/19/2010
Tags: 221112 - Fossil Fuel 化石燃料, Albemarle, Activated Carbon, Activated Carbon Injection System, Blower, MACT, Industrial Boiler
Richard (Rich) Miller, Vice-President of Business Development for Utility Systems at ADA Environmental Solutions (ADA-ES), showed timelines which dictate that boiler operators start mercury testing soon. There are lots of unknowns due to the wide variety of fuels and boiler configurations. With the potential of large carbon needs by the utility and cement industries, supply could be an issue. Mercury reduction guarantees are going to be tough to provide since the need is a mass emission level and not a percent removal. Furthermore the 0.2 lbs/TBtu limit for biomass boilers will be difficult to measure as well as guarantee.
Revision Date: 11/19/2010
Tags: 221112 - Fossil Fuel 化石燃料, ADA-ES, Activated Carbon, MACT, Industrial Boiler