Can the waste liquid containing sodium chloride and sodium carbonate from the joint alkali plant be reused?

Joint alkali uses refined salt sodium chloride and liquid ammonia to produce sodium carbonate and ammonium chloride. During the production process, mother liquor one and mother liquor two, ammonia mother liquor one and ammonia mother liquor two are recycled. Even the washing water used in the recrystallization process of sodium bicarbonate and sodium carbonate is all recovered and not discharged.

So what about the waste liquid at the outlet of the calcined gas scrubber tower?

Ask the moderator again: What are the components and contents of each component of the first mother liquor and the second mother liquor?

The mother liquor balance in the joint soda industry is an important symbol for testing the joint soda process and comprehensive management level. With the development of joint soda technology, most joint soda production companies have basically achieved the mother liquor balance of the production system. However, achieving shrinkage of the mother liquor of the joint-alkali system is a major problem facing the joint-alkali industry. In the past two years, the transformation and preparation of the new shifting gas alkali production unit has laid the foundation for the shrinkage of the joint alkali mother liquor. Because the heavy alkali particles produced by the new shifting gas alkali making unit have been significantly improved, the quality of heavy alkali filtration has been further improved, which has created conditions for the substantial shrinkage of the joint alkali mother liquor. Some newly built new switching gas alkali production units have obviously experienced shrinkage of the mother liquor of the combined alkali system. Equipment cleaning water (boiling tower water, external cooler cleaning water, ammonia II mud plate frame flushing water, alkali filter machine car washing water) and other waste water have been added to the mother liquor system, and the mother liquor is still in a shrinking state. It has laid the foundation for the substantial shrinkage of the mother liquor of the joint alkali production system, and the heavy alkali washing water equivalent has been reduced to 0.65 m3/t alkali. This is of decisive significance for achieving zero emissions in joint alkali production. Sichuan Leshan Hebang Group's joint alkali plant basically has no wastewater discharge.

Can Buzhu introduce the principle and process of changing gas carbonization to achieve shrinkage of mother liquor? This is indeed a very attractive craft. expect! ! !

We are producing alkali through concentrated gas carbonization, and we are basically recycling the waste liquid, but our performance is not good enough. The mother liquor often swells. Is there any good way to solve it?

Please does anyone know what is the solubility of sodium carbonate in saturated sodium chloride solution?

Can it be used to produce lye that does not require high salt content?