DEVICE AND SYSTEM FOR PRODUCING CEMENT CLINKER

摘要

In the method according to the invention for producing cement clinker, raw cement meal is preheated in a preheater, the preheated raw cement meal is precalcined in a calciner and the precalcined raw cement meal is burnt in a kiln, fuel and combustion air having an oxygen content of at least 75 mol % being used in the calciner, and the raw cement meal being precalcined in a fluidised bed in the calciner. The exhaust gases occurring in the kiln are delivered to the preheater, bypassing the calciner, and the exhaust gases of the calciner are delivered to a CO2 preparation device.

主权项

1. An apparatus for producing cement clinker comprising:
a. a preheater for preheating raw cement meal, b. a calciner in the form of a fluidized bed reactor, said calciner precalcining the preheated raw cement meal, said calciner having means for delivering fuel, means for delivering combustion air having an oxygen content of at least 75 mol % and means for delivering preheated raw cement meal, said calciner being connected to a CO2 preparation device and delivering the exhaust gases of the calciner to the CO2 preparation device, and c. a kiln burning precalcined raw cement meal, said kiln having a kiln exhaust gas duct connected to said preheater and bypassing said calciner to deliver the kiln exhaust gases occurring in the kiln into the preheater to directly contact the contents of the preheater.