Theoretical and Experimental Research on Three-plunger Straw Coal Fuel Molding Machine

LI Yuan et al(School of Mechanical Engineering & Automation,Liaoning University of Science and Technology,Anshan,Liaoning 114044)

Three plunger;Biomass energy;Molding equipment;Straw coal

In view of the diverse types of biomass materials,low production efficiency,high production costs,strong vibration of equipment and heavy wear of parts,etc.,a new three-plunger straw coal fuel molding machine was developed with the virtual prototype and finite element technique based on the molding experiment.When the cone angle is 15°,the molding temperature is 180 ℃,and the water content in materials is 11%-17%,the density of the molded straw coal can be above 1.1 g/cm3 with the per unit heat value of more than 4 300 kJ,which is as good as the excellent coal.The production efficiency of the three-plunger straw coal fuel molding machine is raised by about 50%,the costs was cut down by 33%,the molding rate can be as high as 99%,and the service life is nearly tripled.With the advantages of strong adaptability to various raw materials,high production efficiency,low costs and smooth running,the three-plunger straw coal fuel molding machine is particularly suitable for rural people,and its purchase has been subsidized in Liaoning Province.