Cement Industry – Save energy in Kiln Application

The new generation of control system, developed by Amtech Electronics (India) Ltd, integrated the operation of Kiln application in cement industries along with variable frequency drive and control.

Variable Frequency Drive in Gujarat

For the kiln application, DC motor and drive are used due to their excellent torque speed characteristics, but the maintenance of DC motor is a big issue. Customer replaced DC motor and drive with 220 kW, 415 V AC Motor and VFD to run the kiln. Still, they were not able to increase the speed of kiln.

Amtech installed additional 110 kW auxiliary motor and VFD and an additional controller was used for load sharing. 110kWauxiliary motor and VFD. Additional controller used for load sharing.or and VFD. Additional controller u

Limitations of previous system :

• The speed of kiln was not possible to be increased beyond 3 RPM
• No possibility of increasing motor capacity due to limitation of torque as kiln may bend
• Availability of motor / gearbox was a major issue

Challenges :

• High torque to increase kiln speed – up to 4 RPM
• Kiln bending due to single point torque
• Start up and interlocking of both VFDs, front and back part of process

Solution :

• Additional 110kW auxiliary motor installed
• Axpert controller used to match the RPM and torque of both motors for proper load sharing
• Built-in PLC function of Axpert-Eazy VFD used to provide required interlock to the system

Features :

• Smooth speed control of kiln through two VFDs and motor of different ratings and specs.
• No need for additional cost or investment.
• Latest series variable frequency drive with state-of-the-art engineered panel with protection from dusty environment, ensures trouble free operation of the kiln.
• Built in PLC function of Axpert-Eazy VFD used to provide required interlock to the system.
• Variable frequency drive control eliminates the problems of motor, mechanical losses.

Benefits :

• Assistance from concept to commissioning from Amtech
• Speed of kiln increased to 4 RPM, resulting in higher production
• New system with existing components
• Higher reliability - Less Mechanical wear / tear – more uptime
• Full motor protection
• Smooth kiln operation
• Energy saving
• Easy troubleshooting
• Quick and safe commissioning
• Qualified after-sales service from Amtech

Visit us:- http://www.amtechelectronics.com