A common reason for shutting down a cement kiln is usually dust buildup in the risers, the powder lines, and the cyclones due to an excessively high chlorine content in the system. The chlorine comes either directly from the raw materials, the additives, or the fuel. Especially when alternative fuels are used, a high concentration of chlorine often circulates in the rotary kiln and in the lower stages of the preheater. This chlorine condenses at temperatures between 750–800°C and causes the raw meal particles to become adhesive. This subsequently leads to disruptive caking on the lining of the risers and cyclones.
The A TEC Bypass REDUCHLOR® can counteract this very issue.
The bypass consists of a custom-designed exhaust chamber above the furnace inlet and a quench chamber, where the chlorine condenses and adheres to the fine dust particles. After this step, the chlorine-enriched material is collected in a filter. Diverting 2–8% of the furnace gas using the A TEC bypass is usually sufficient to reduce the chlorine content to an acceptable minimum. This allows material deposits to be reduced without excessive heat loss.
Contact
Johannes Müllner
Interest
We're happy to help
