A TEC has been awarded a calciner upgrade contract by Buzzi Cement Hranice, akciová spolecnost, in the Czech Republic. The contract comprises engineering, equipment supply, steel structure, erection and civil works.
The plant is burning alternative fuels, which increase the required retention time for complete combustion in the calciner. With the new A TEC system, which includes hot gas chamber, calciner and post combustion chamber, the retention time will be approximately 7 seconds. This will allow the plant to increase its use of alternative fuels up to 100% in the calciner and will decrease heat consumption and NOx emissions.
An A TEC Post Combustion Chamber will be situated at the top of the calcining system for optimised gas mixing and increased retention time. The calciner will have three fuel input positions, with the main fuel input located from the top into the hot gas chamber. The intake for shredded tyres will remain in the same position and the existing calciner burner will be moved from the existing position to the calciner. Tertiary air distribution and oxygen control are carried out by several dampers.
The plant utilises RDF, coal and animal meal, as well as natural gas. The calciner upgrade will be installed and started up in February 2014.
Adapted from press release by Katherine Guenioui
Read the article online at: https://www.worldcement.com/europe-cis/28082013/a_tec_wins_calciner_upgrade_contract_131/