Introduction: Biodiesel refers to fatty acid methyl ester or ethyl ester formed by ester conversion of vegetable oil (such as rapeseed oil, soybean oil, peanut oil, corn oil, cottonseed oil, etc.), animal oil (such as fish oil, lard, tallow, sheep oil, etc.), waste oil or microbial oil with methanol or ethanol. biodiesel steam boiler, Biodiesel is a typical "green energy" with the characteristics of good environmental protection, good engine starting performance, good fuel performance, wide source of raw materials, renewable and so on. biodiesel steam boiler means the boiler use biodiesel as the boiler fuel. ZOZEN Boiler provides the biodiesel steam boiler.