Abstract: The normal spherical iron exchange equipment can not satisfy the operation requirement of condensing water fine treatment in 1000MW level nuclear generation unit due to the large water flow needed. And in engineering practice the large-diameter iron exchange column has not success operation instance yet. The relevant project research was developed combining the practical engineering, and positive result was obtained.

Key words: 1000MW level nuclear power generation unit, condensing water fine treatment, iron exchange equipment, resin turbulence