What is the specific design parameters in the plant?

1. Temperature up to 600 °C
2. The screw conveyors must operate 24 hours a day with only one revision during the year
3. 2 conveyors sit directly under the boiler and receive ash and slags from the process and during air-blasts

Key design features of the ash screw conveyors

1. Housings manufactured in boiler steel. The boiler steel is perfect to resist the specified temperature
2. Separation of the drive shaft and the screw rotor by using a special coupling with low heat transfer capability
3. The screw rotors under the boiler are manufactured with paddle design to be able to handle ash and slag lumps
4. The screw converyors are supplied with inspection plates in the body for the possibility to come in and clean the screw rotors
5. The material of the screw rotors are 253-MA heat resistant stainless steel
6. Ensured a low filling degree to ensure a long lifetime of the ash screw conveyors

See another ash screw conveyor for handling high temperature ash

This project is an example of BEMA’s capability to handle screw conveyors for high temperature ash. In this project BEMA has:

1. Designed the screw conveyors
2. Made a complete set of manufacturing drawings
3. Manufactured the screw conveyors
4. Assembled and tested them in our workshop
5. Performed a FAT together with the customer
6. Delivered the screw conveyors on-site