Hello. It's required:
A caustic soda dissolution line with a capacity of 12, 000 - 24, 000 tons per year in terms of 100% dry matter is needed. Crystalline caustic soda comes in big bags. This point needs to be taken into account. The required solution concentration is 46-50%.

Please note that the dissolution reaction is exothermic. Accordingly, it is necessary to take into account heat dissipation.

And also, extremely high "dustiness". For its safe extraction from big-bags, the method of "wet rastarization" is often used.

The planned operating mode is 5/7 for 12 hours.

If possible, the use of 25 kg bags in addition to big bags should be considered.

Water treatment is required (if possible).

There are also characteristics of the final product (information for the manufacturer).