Biofuels can replace wood, coal, liquefied natural gas, are widely used for life heating furnace stove, hot water ... : crop like saw dust, corn stalk, wheat stalk, cotton stalk, rice straw, rice husk, peanut shell, corncob, bark, leaves, industry waste. After crushing ... market of straw charcoal)can replace firewood, raw coal, liquefied gas, widely used in family stove, warming stove, hot-water boiler ...