如何延长母液蒸馏塔的运行周期

为解决纯碱生产中蒸馏塔结疤 ,以致频繁开停蒸馏塔的问题 ,通过在粗盐水中加入氯化钙溶液 ,降低硫酸根离子浓度 ,控制预热母液温度在 95℃ ,在调和槽中加入一定量的废盐泥消除硫酸钙过饱和值 ,减缓蒸馏塔结疤程度 ,保持蒸馏塔平稳操作 ,以及停塔后对各个部位进行检查并彻底清理 ,可使蒸馏塔的运行周期延长。措施实施后 ,蒸馏塔运行周期由原来 2 0～ 3 0 d提高到 45d,保证纯碱生产稳定运行 ,提高了产品产量、质量。

How to Prolong the Running Period of the Mother Liquid Distillation Column

In order to the problem that scar in the distillation column causes running and shutting in soda production,we should add chloridize calcium solution in original brine,lower the concentration of sulfuric acid ridical, control the temperature of the warmup mother liquid at 95 ℃, join some depose salt mud in the harmony sloy to eliminate the supersaturation of sulfuric acidcalcium, decrease the column scar degree, keep the steady operation, check every part after shutting down the collum and clean quite up the column to prolong the running period. After taking the measures, the running period increase from 26 d to 45 d,which can keep the soda production steady and increase the output and quality of the production.