The energy-saving and emission-reduction heating system of Unilever’s detergent powder production line constructed by Meibao was put into operation. The system adopts a number of patented technologies of our company and uses biomass as fuel to provide clean hot air and steam required for drying of detergent powder production. In particular, the waste heat steam system saves more than 20% energy compared with traditional steam boiler. And the use of biomass fuel not only responds to the needs of circular economy development, but also greatly reduces the fuel cost of production.