How to address scaling in the pipes downstream of the ammonia vaporization and alkali addition section

Perhaps optimizing the amount of alkali used could help?

Such problems exist, and we are also seeking answers

After adding alkali, it is converted into free ammonia, and some complexes precipitate to form solids. In many of the projects we have worked on, a three-phase separator is used after adding alkali to separate these solids; once separated, the solids are removed online before entering the stripping tower for ammonia removal.

There were several stages regarding the issue of ammonia vaporization and alkali addition: Stage 1: The alkali addition port was located on the tower, with the alkali solution being added directly into the tower. The advantage is that it reduces the occurrence of scaling, but the disadvantage is that the alkali solution and ammonia cannot mix properly, resulting in a falsely high pH value in the ammonia-evaporation wastewater and a low decomposition rate of fixed ammonia. Phase 2: Alkali solution is added to the pipeline for the remaining ammonia feed, and a static pipe mixer is installed after the location where the alkali solution is added. The advantage is that the alkaline solution mixes more evenly, but scaling causes the pipeline mixer to become easily clogged. Stage 3: An alkali solution mixing tank is installed outside the ammonia evaporation tower; after thorough mixing, the solution enters the ammonia evaporation tower. The actual effects at present are yet to be seen.

There is a problem with the liquid alkali; synthetic alkali should be used instead

Hello: Our company can solve this issue by adding chemicals, which allows the cleaning cycle to be extended by about 3 times. My WeChat number is 13606362712; please get in touch

Hello: Our company can solve this issue by adding chemicals, which allows the cleaning cycle to be extended by about 3 times. My WeChat number is 13606362712; please get in touch