What is the mobile grate in industrial steam boilers?

In industrial steam boilers that use biomass as fuel, the installation of a mobile grate is the best option due to its many advantages:

-The mobile grate makes feeding and extraction of ashes and slag automatic, which makes maintenance, cleaning and inspection of the boiler easier.

-The mobile grate also means that any type of biomass can be used as fuel, regardless of the size.

-A boiler furnace with a mobile grate can be completely water-cooled. This applies to the CSPM industrial biomass steam boiler by ATTSU, which avoids the problem of heating "dry" furnaces.