氢气和一氧化碳在混二甲苯中的传质系数

在１Ｌ表面进气式高压机械搅拌釜中，采用气体间歇吸收技术，在不同的温度，气体压力下研究了Ｈ２和ＣＯ在混二 的体积传质系数，结果表明，Ｈ２和Ｃ类混二甲苯中的体积传质系数均随温度的升高而升高，随压力增加而增加，而且在桢的温度和压力下，ＣＯ在混二甲苯中的体积传质系数大于Ｈ２的体积传质系数，但数量级是相同的，同时随着搅拌速率的升高，体积传质系数也在增加。

MASS TRANSFER COEFFICIENTS OF H2 AND CO IN MIXED XYLENE

The effects of operating variables on the mass transfer coefficients ( K L a ) for H 2 and CO in mixed xylene were measured at various gas partial pressures(1 0 MPa 5 0 MPa) and temperatures (353 K 433 K),in a liter suface aerated agitated autoclave.The K L a data were determined using the transient physical gas absorption technique,the decline of system pressure as a function of time were recorded using an on line computer acquisition system.The obtained data showed that K L a values for all gas liquid systems studied increased with temperature and gas partial pressure.The values of K L a for CO and H 2 are of the same order of magnitude.The data showed that K L a values increased with mixing speed.