The self-cleaning design inside the furnace is reliable, allowing for long-term uninterrupted ash cleaning operation. This case study uses all-straw fuel and operates at full load according to the design specifications. This boiler is designed to be suitable for various bulk biomass, coal, and other fuels, and tolerates low calorific value and high moisture content. With simplified dust removal equipment, there is no visible black smoke emission. Thermal efficiency ≥ 86.3%.