Y型分子筛生产过程用水的回收和再利用

概述了在分子筛生产过程中用水的现状,分析了降低水消耗的措施。通过使用催化剂滤液代替新鲜水;优化带式滤机各段滤液回收工艺,沉降后逆次回用到前一生产工序中,提高水的重复使用率;对焙烧吸收塔水进行回收利用等措施,最终实现降低水耗、提高分子筛收率、降低分子筛生产成本的目的。

Recycling and Reusing of Water in the Production of Y Molecular Sieves

The status of water consumption in the production of molecular sieves is described and the way to decrease the consumption is analysed.Instead of,the discharged filtrates after proper treatment was reused for substituting the fresh water in the whole process.The recycling operation of the filtrates of every belt-filters was optimized.After precipitation,the filtrate was reused by recycling to the former working procedure.The recycling use of the sewage water from the adsorbing tower after the calcination system decreased the consumption of fresh water,increased the productivity of the unit and cut the cost of the products.