biomass boilers 1,large heating surface and big drum 2,Unique air feeding, furnace arc 3,special grate 4,high efficiency DZL straw fired boilerbiomass boiler steam* forming solid biomass fuels (referred to as biomass fuels, commonly known as: straw coal), is the use of new technologies and specialized equipment will crop straw, wood chips, sawdust, peanut shell, corn cob, rice straw, rice husk, ...