在CO

2

/二正丁胺/三乙胺浓缩稳定性同位素

13

C体系中，研究了2×2θ环（100目磷青铜丝网）、1.5×1.5×0.12三角形螺旋圈（ϕ0.12不锈钢丝绕制）和1.6×0.6×1.5×0.12矩形螺旋圈（亦称Helipak，ϕ0.12不锈钢丝绕制）等三种填料的主要性能，表明丝绕高效填料很适用于需要多理论板数的同位素化学交换过程。

The major performances of three high efficiency packings were studied in the enrichment of

13

C using CO

2

/di-n-butylamine (DNBA) /triethylamine (TEA) system. These packings consisted of 2 × 2mm Dixon rings (phosphor bronze gauze

100 mesh)

1.5×1.5×0.12 mm triangular-section spirals (stainless steel wire

ϕ

0.12mm) and 1.6×1.6×1.5×0.2 mm rectangular-section spirals (i.e. Helipak packings

stainless steel wire

ϕ

0.12mm) .The results showed that the spiral packings are very suitable for the chemical exchange processes of isotope separation which require theoretically a large number of plates.