ESPOO, Finland, May 4, 2023 /PRNewswire/ Valmet is to convert Helen Ltd's coal-fired district heat boiler to bubbling fluidized bed (BFB) combustion to enable wood pellet firing at the Salmisaari
/PRNewswire/ Valmet is to convert Helen Ltd s coal-fired district heat boiler to bubbling fluidized bed (BFB) combustion to enable wood pellet firing at the.