EQ prepared a heat and mass balance for the kiln operation that defines the flue gas volume produced by the kiln operation and fuel gas composition (oxygen, carbon dioxide, sulfur dioxide, nitrogen, and water). An estimate of the dust loading was also prepared. This balance was used to evaluate the use of a fabric filter and ESP and to specify the design and performance.

EQ reviewed the applicable regulatory requirements for PM emissions from the kiln. The review included state implementation plan (SIP) limits (process weight equations), new source performance standards (NSPS), Maximum Achievable Control Technology (MACT) (proposed), opacity, and ambient air quality standards. This analysis was used to determine the maximum permissible opacity and mass emission rate for the proposed air pollution control device.

EQ also prepared an opacity prediction for the required PM emission limit. Kiln gas volume, particulate matter concentration, particle size distribution, and stack diameter data were used in the analysis.

After producing specifications for application of fabric filters and ESP technology for possible replacement of the existing ESP, we prepared a technical report that included the installed cost of each technology and the advantages, disadvantages, operating costs, and effects on process operations. Based on this review, a recommendation for abatement technology was provided.

EQ reviewed applicable sulfur dioxide regulations that may limit sulfur dioxide emissions from the kiln. This analysis was used to provide a target for sulfur dioxide abatement options and the effectiveness of each option.

To determine compliance with the NAAQS (3-hr, 24-hr, annual), EQ conducted a dispersion modeling analysis of sulfur dioxide emissions. A cost/benefit analysis was prepared that compared the cost of additional stack height versus the cost of increased sulfur dioxide control. Additional control methods included fuel sulfur limitations, add-on abatement equipment (adsorbers), and/or process controls.

We also prepared an analysis plan to evaluate the sulfur contribution of each raw material to the kiln. The plan included the number of samples, method of collection (composite, grab, or quarry core sampling, etc.), analytical methods, and reporting requirements. These data were used to recommend possible mix design changes to manage sulfur dioxide emissions.

EQ's multidisciplinary staff provide key services covering the total spectrum of your environmental engineering requirements from project planning to complex site assessment/remediation projects. This listing contains just a few of the projects that EQ has completed for our clients.

If you would like additional information or if you have any questions concerning these projects please contact Bob McCullough at (800) 229-7495.