CEMEX Construction Materials Florida LLC is looking to permanently add alternative fuels in place of coal and other already-permitted fuels at its Miami Cement Plant in Miami, Fla.
The Florida Department of Environmental Protection on April 3 put the draft permit change out for public comment. The application requests authorization to construct mechanical and pneumatic material handling systems for introduction of alternative fuels into the existing preheater/precalciner kiln system and modification or replacement of the main kiln burner system to allow introduction of a variety of fuels to the kiln system. These modifications will not increase production capacity, the DEP said in a public notice.
CEMEX does not request the relaxation of any existing permit limit or applicable regulatory requirements for Portland cement plants. The cement kiln is currently authorized to fire coal, natural gas, petroleum coke, propane, No. 2 fuel oil, residual fuel oil, plus on-specification and off-specification used oil. Non-startup fuels include whole tires and tire-derived fuels, booms and rags from clean petroleum spill clean ups, oil filters, unused paper by-products, and clean non-chlorinated plastic by-products.
The plant had lately been permitted for trial burning of a variety of non-hazardous alternative fuels. Based on information so far regarding the firing of non-hazardous alternative fuels in cement kilns, the plant requests permanent authorization to fire the non-hazardous alternative fuels. CEMEX proposes to use these alternative fuels for cement production to reduce greenhouse gases and its reliance on fossil fuels, such as coal.
CEMEX requests authorization to fire the following non-hazardous alternative fuels in any combination in the existing cement kiln: tire-derived fuel (currently permitted); plastics; roofing materials; agricultural biogenic materials; untreated (currently permitted) and treated cellulosic biomass; carpet-derived fuels and engineered fuels (EF). The modified kiln system will continue to meet all current emission limits when alternative fuels are used.