Drake Cement permits petcoke use at its facility in Paulden, Arizona

The Arizona Department of Environmental Quality (ADEQ) is taking comment until Feb. 29 on a draft air permit that would allow Drake Cement LLC to combust petroleum coke in the kiln at its facility in Paulden, Yavapai County, Arizona.

This Class I Significant Revision to Operating Permit #53336 would be issued to Drake Cement to authorize petroleum coke (petcoke) as a fuel for the cement kiln. Additionally, this revision authorizes the facility to use filter cake as a non-hazardous secondary material to blend in with the raw materials.

This cement plant is compromised of equipment used for raw material receiving/processing, coal preparation/processing, pyroprocessing/clinker production, and final product finishing.

“This revision authorizes the facility to combust petroleum coke in combination with coal in the cement kiln,” said the agency. “This revision also allows the facility to blend in filter cake with the raw materials as a nonhazardous secondary material. … The filter cake is mainly comprised of calcium fluoride which is a valuable ingredient in the cement process, and has been shown to improve combustion and quality of the product produced in the cement process.”

About Barry Cassell 20414 Articles
Barry Cassell is Chief Analyst for GenerationHub covering coal and emission controls issues, projects and policy. He has covered the coal and power generation industry for more than 24 years, beginning in November 2011 at GenerationHub and prior to that as editor of SNL Energy’s Coal Report. He was formerly with Coal Outlook for 15 years as the publication’s editor and contributing writer, and prior to that he was editor of Coal & Synfuels Technology and associate editor of The Energy Report. He has a bachelor’s degree from Central Michigan University.