Dal Teknik Makina completes Nuh Çimento plant upgrade
Dal Teknik Makina has successfully carried out the modernisation of Kiln Line No1 at Nuh Çimento plant in Hereke, Turkey. Nuh Çimento plant has now increased its production capacity up to 3400tpd from 2800tpd, the specific heat consumption of clinker has been decreased to level of 740kcal/kg clinker from 870kcal/kg clinker and clinker temperature of 55˚C plus ambient temperature.
This project involved the design, manufacturing and erection of the preheater tower cyclones group, kiln feed transport system, clinker cooler, kiln hood, removing of dust cyclone at tertiary air duct, cooler vent fan modification, main bag filter duct modification and kiln inlet seal and commissioning of the system.
The first part of the upgrade project was the modification of the preheater tower, which as a result reduced the pressure drop, improved heat transfer and separation efficiency, and heat consumption.
The second part of the project was the retrofit of the grate cooler. The clinker cooler, kiln hood, cooler fans and cooler vent fan were replaced by FONS Technology International. In this part, kiln hood, cooler vent, exit pipe of WHR and tertiary air duct were modified as well.
Finally, the horizontal duct of main bag filter inlet was replaced by an inclined one to avoid dust accumulation. The last step was the replacement of the pneumatic kiln feed by bucket elevator.
After the execution of the upgrade project, which, by the way was carried out in a record time of 35 days from flame off to flame on, great values were achieved.
Moreover, with this project Dal notably decreased electrical consumption by 7kWh/t. The raw mill capacity was increased from 160tph to 185tph.
Dal’s most recent release at Nuh Çimento plant is part of Dal - Filter-to-filter pyroprocess concept which covers the following production units:
• kiln/VRM dedusting unit
• raw meal transport and homogenisation silo unit
• kiln feed system
• gas conditioning tower unit
• preheater tower (cyclones, dip tubes, flap valves, etc)
• precalciner
• RDF utilisation
• rotary kiln (inlet & outlet seals, tyres & rollers, hydraulic thrust, etc)
• AD damper
• clinker cooler
• clinker cooler de-dusting unit (heat exchanger + bag filter or ESP).
