Recently, the utility model patent "A Caustic Soda Recycling Device" applied for by Tianwei Chemical Plant has been authorized by the National Intellectual Property Administration.

It is understood that during the production process of flake caustic soda, the concentration index of the finished flake caustic soda is that the content of sodium hydroxide is ≥ 98%. During the caustic liquid recycling process, the generated water vapor will directly affect the concentration of the finished flake caustic soda, and it is likely to reduce the service life of the falling film tubes of the final concentrator.

In response to this problem, the company organized technical personnel to carry out innovative design, cooled down the recycled caustic liquid in the caustic liquid evaporation system, thereby reducing the amount of steam generated during the recycling process and ensuring that the concentration index of the flake caustic soda is qualified. At the same time, it also extends the service life of the falling film tubes, reduces the production cost, and improves the economic benefits of the enterprise.