摘要
高压搅拌釜和计算机数据采集系统,在温度373K～573K,压力2 0MPa～10 0MPa,搅拌转速600r min的实验条件下,根据气体等容吸收降压原理,测定了氢气在松脂和松香中的体积传质系数,并建立了体积传质系数与温度、压力的关联式,为松脂和松香催化加氢反应动力学的研究提供了基础数据。考察了温度、压力对体积传质系数的影响,结果表明体积传质系数随温度和压力的升高而增加。在计算体积传质系数过程中,微分法与积分法二者之间平均绝对偏差为:松脂4 74×10-4,松香1 21×10-4。
Volumetric mass transfer coefficient of hydrogen in pine gum and rosin which is very necessary to provide the important basic data for studies on reaction kinetics of catalytic hydrogenation of pine gum and rosin have been measured at various pressure (2.0?MPa～10.0?MPa), temperature (373?K～573?K), and 600?r/min stirring speed in a high-pressure agitated autoclave. According to the pressure change during the pure gas dissolution in solvent, volumetric mass transfer coefficients of H_2 in pine gum and rosin were calculated. The result shows that volumetric mass transfer coefficient of hydrogen increased with temperature and pressure, and the relationship among them have also been correlated. During the calculation of volumetric mass transfer coefficient, the comparison of the results between integral method and differential method was also made, and the average absolute deviation is 4.74×10^(-4) for pine gum and 1.21×10^(-4) for rosin.
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
2003年第6期615-619,共5页
Journal of Fuel Chemistry and Technology
基金
国家自然科学基金(29766002)
广西自然科学基金(0229005)
广西青年科学基金(0135030)~~
关键词
氢气
松脂
松香
体积传质系数
hydrogen
pine gum
rosin
volumetric mass transfer coefficient
