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.

These(preliminary) studies indicate that the boron fluoride with nitromethane or acetone system with higher separation factor is superior to the anisole system used currently,but a more detailed study is.

The isotopes of boron,~(10)B and ~(11)B,were separated by means of a gas-liquid chemical exchange reaction and distillation involving the isotopic equilibrium between gaseous boron fluoride and a liquid boron fluoride-donor molecular addition complex.

The com plexes between these new donors and boron trifluoride (BF .

Although the ionic conductivities of methanol and pure boron trifluoride diethyl etherate (BFEE) are very low, methanol containing small amount of boron trifluoride diethyl etherate is good proton electrolyte with maximum ionic conductivity of 20 mS/cm.

Several separation routes of isotope boron 10 are described,but unique chemical exchange fractional distillation of boron trifluoride-anisole is adopted for the enrichment of boron 10 in large scale nowadays in the world.

Commercial Scale Process of BF_3 in Cylinder;

Medical BF_3 And Its Safety Code in Use;

To prepare the epoxy coating by heat-control soldfied in BF_3 microcapsule;