Abstract: In order to study the feasibility of using biomass fuel in tobacco curing,on the base of early research results,the text used the formula 50% wood chips plus 50% tobacco stem as materials to produce 8 mm-diameter pellet fuel by an efficiency biomass pellet machine(HCK045A).Five treatments were used during tobacco curing,including T0(100% coal) as contrast,T1(30% biomass fuel plus 70% coal),T2(50% biomass fuel plus 50% coal),T3(70% biomass fuel plus 30% coal) and T4(100% biomass fuel).Indexes including dry and wet bulb temperature,comprehensive thermal efficiency,chemical components of flue-cured tobacco leaves,pollutants content of combustion gas,economic characters and curing cost of different treatments were analyzed.The results showed that,the curing barn which used biomass fuel warned up more quickly during yellowing stage and leaf-drying stage than the curing barn which used coal but slower during stem-drying stage and the thermal efficiency was higher.The chemical components of cured tobacco leaves were more suitable and the coordination was better.The content of main pollutant SO₂ of combustion gas from the curing barn which used biomass fuel reduced significantly,especially the content of treatment T4 only was 4.17% of CK.The curing cost increased because the increasing of labor and materials,and the range of T1 was lowest(1.72%) but that of T4 was highest(20.62%).However,due to the higher ratio of mid-high grade leaves the output values of curing treatments with biomass fuel all increased,especially the range of T1 was highest and extended 22.91%.

Key words: Tobacco curing, Biomass fuel, Comprehensive thermal efficiency, Chemical component, Economic character

CLC Number: 

• S572.01