Research On Biomass Combustion Characteristics Of Some Eco-energy Plants

Energy is one of the four parts to conceive a modern civilized society it can promote social development and economic progress. But with human development, the non-renewable energy resources are already drying up, Solving the energy issue has become the primary task of human society development. Along with the emergence of the new technologies, such biomass that earliest human used of is gradually being re-understood and being re-used of effectly! Direct combustion of biomass is one of the most effective ways to use biomass, and being wider used for many countries.In order to obtain the biggest energy output, in the previous part of the energy of our species on the basis of the study, the paper based on biomass, gross caloric value, ecological characteristics, and other indicators, the choice of Q. variabilis, Robinia pseudoacacia L., Lespedeza sp and AmorphqfruticosaL. is made for research purpose. By studying its gross caloric value changes and changes in the biomass, determine that the best time for harvesting, so as to obtain maximum effect woodland energy production.Research shows that fixed carbon, nitrogen content and calorific value of dry weight is positively correlated, Tree trunks and branches ash-free calorific value have connection, That is, the greater the amount of growth year after year, the higher ash-free calorific value; Different parts of the tree calorific value vary significantly; In different seasons, the same site of ash-free calorific value are different, but not significantly; In winter, the grade of the tree ash-free calorific value become leaf>bark>drunk>branch.; By analyzing the analytic tree, calculated rate of bark of the Q. variabilis and Robinia pseudoacacia L. and calculated the density of tree trunks in different water condition; Shrub density affect the biomass significantly ,but not significantly to the ash-free calorific value, so the intensive cultivation is preferred to obtain maximum energy output; Meanwhile, the ash-free calorific value of Lespedeza sp and AmorphqfruticosaL are different significantly; The biomass of shrubs leaf is huge, almost at the same weight with drunk in fall. the ash-free calorific value of shrubs reach the top in September.