Predicting feed composition of depropanizing column;

The effects of the feed composition and the feed temperature on the energy-saving efficiency of the backward-feed two-effect distillation are researched in ethanol-water system by process simulation.

Through the mathematical inference, the author presents a new procedure based on feed composition (z),phase equalibrium constant (K) and vaporization ratio (φ) in ternary component equilibrium flash vaporization without iteration.

As there are several deficiency in initial unit, such as serious back mixing between the catalyst particles, low entrance velocity of oil and gas and being not able to achieve the stratifying injections of light and heavy feed in the riser, the newly-built unit is improved consequently.

Effect of influent composition on membrane fouling in membrane bioreactors was investigated.

In this article, the author, from four aspects of clinker composition design, particle size grading, additive application and substitute a.