我厂于1980年用无压法逆流再生替换了气顶压法再生工艺,经过两年多的实际运转表明,再生酸、碱单耗变化不大(平均碱耗气压法为82.47克/克当量,无压法为82.28克/克当量),树脂不易乱层,而且可以节省顶压用的氮气。根据计算,再生吋中间排水管上的小孔 In 1980, we replaced the pressure boosting process with pressureless countercurrent regeneration. After more than two years of actual operation, we found that the acidity and alkali consumption did not change much (average alkali pressure was 82.47 g/g equivalent). The pressureless method is 82.28g/g equivalent), the resin is not easy to mess with, and it can save nitrogen for top pressure. According to the calculation, the small hole in the middle of the reclaimed concrete drainage pipe