On the base of recent achievements of isotope separation,chemical engineering and cryogenic engineering,preparation of material gas,strengthening of heat transfer,design of new packing,structure of cryogenic rectification tower,cascade type,energy organizing for the innovation of production of stable isotope carbon-13 were studied.

Hydrogen isotope separation and simulation technology with cryogenic distillation system;

A rigorous thermodynamic model was used to study the characteristics of cryogenic distillation column of hydrogen isotope system having feedback stream.

In order to uncover the inherent relationship of operating parameters in cryogenic distillation separation of hydrogen isotopes,the influences of Wr(heat power of reboiler) on deuterium extraction efficiency,column pressure drop and liquid level were studied under total reflux mode.

The result showed that,the extraction process using mixture solvent is superior to that using furfural in reducing the extractive temperature,improving the yield of the refined lube oil,and lowing the energy consumption and solvent consumption in extraction process,under the same quality of refined lube oils.