Question

求一段话的化工专业英语翻译~

to directly affect the reaction extent, which takes place at the

liquid-solid interface. Indirectly, a larger gas flow rate has two

effects: (i) it can increase the mass transfer rate between gas

and liquid (i.e., higher conversion), and (ii) it reduces the

volumetric fraction of liquid, causing larger liquid velocities,

then lower liquid/solid contact time (i.e., a smaller conversion).

The first effect is negligible, unless the liquid flow rate is large,

requiring a comparatively large transfer rate from the gas. Soon

after the minimum gas flow rate, the second effect prevails all

the time. We conclude that larger gas flow rates almost always

cause a lower conversion.

H2 always increases the H2O2 degradation. Overall, both paths

can decompose up to 20% of the H2O2 available, at the low

0.5% mol concentration, with a minimum >1% at the highest

flow rates. These values provide an upper bound for the

synthesis, given that H2O2 is gradually produced along the bed.

Hydrogenation accounts for approximately 1/3 of the total

degradation, suggesting that synthesis can be viable, if its rate

can be sufficiently higher than the significant degradation

processes.

Answer 1

直接影响反应的程度，这发生在

液 - 固界面。间接地，较大的气体流量有两个

效果：（ i）其可以增加气体之间的传质速率

和液体（即，更高的转化率） ，以及（ii）它减少了

液体容积率，造成较大的液体的速度，

然后降低液体/固体接触时间（即，一个较小的转换） 。

第一个效果是可以忽略不计的，除非液体流速大，

需要从气体中比较大的传输速率。不久

的最小气体流速后，所述第二效果为准所有

的时间。我们的结论是较大的气体流速几乎总是

导致较低的转换。

H2总是增加的H2O2降解。总体而言，这两个路径

可以分解到可用H 2 O 2的20％，在低

0.5％摩尔浓度，以最小的> 1％ ，在最高

流速。这些值提供了一个上限为

合成的，因为H 2 O 2被逐渐沿床生产。

氢化大约占总量的三分之一

降解，这表明合成可以是可行的，如果它的速率

可以比显著降解足够高

流程。