He Zhengbin

Influence of Pyrolytic Conditions on Pyrolytic Products of Walnut Shell

This paper took walnut shell as experiment material, under the conditions that the endpoint temperatures were 450¡æ,600¡æ and 750¡æ respectively. And the average heating rate was 150¡æ/h, the pyrolytic products of walnut shell indicated that, under a certain condition, with the increase of pyrolysis temperature, the walnut shell charcoal yield rate showed a downward trend, While the yield rate of vinegar was increased, the average yield rate of charcoal and vinegar were 30.28%and 45.61%respectively.

Study on the Drying Properties of Eucalyptus grandis x E. urophylla under Floating Pressure Conditions

In this paper, Eucalyptus grand is ¡Á E.urophylla was pretreated under 100¡æ steam and boiling water conditions respectively, and then the pretreatment and untreated specimens were dried in a kiln in which the temperature was65¡æ and the pressure varied between 0.1MPa and 0.3MPaevery one hour. As a result, we got the conclusions that, both100¡æ steam and boiling water pretreatment could reduce wood moisture content significantly during treating process and the rates of 100¡æ steam pretreatment is 15.7% per hour which is higher than that of boiling water pretreatment which is 11.6%; Under the floating pressure condition, the drying rates of 100 ¡æ steam, boiling water pretreatment and untreated specimen are 0.97%, 0.98%, 0.86% per hour respectively which are much faster than that of the results of existing reaserches in this fields, When the moisture content of eucalyptus is above the fiber satuation point, the drying rates of pretreatment specimens are fast than that of untreated specimen, on the contrast, when the moisture content of specimens are below FSP, the drying rates of untreated specimans are much faster.