What are the precautions for fermenter cleaning?

Cleaning the fermenter is very important, but many people don't do it very well, and instead of cleaning it, it can lead to worse results.

1. The fermentation process will produce a lot of protein, beer resin, polysaccharide, yeast and other organic matter, as well as calcium oxalate, sulfate and other inorganic matter. The fermenter is empty and organic and inorganic dirt adheres to the walls of the tank, forming a yellowish brown color. If there is a lot of tartar, the surface turns white, and inorganic and organic matter intertwine like the skin of alkaline soil.

Alkali is used for cleaning, but can only help remove organic matter, cleaning temperature reaches 80℃ cleaning effect is better.

Cleaning with a single nitric acid, but only moderately effective on inorganic matter, almost no effect on organic matter. On the other hand, dirt that adheres to the walls of the fermenter is a mixture of inorganic and organic matter that is difficult to clean with a single detergent.

2. Part of the anticorrosive layer of fermenter wall T541 was damaged. After repair, the surface cleanliness was significantly reduced, and the tank wall dirt was difficult to clean.

3. Due to the wear and blockage of the scrubber and jade, the cleaning of part of the fermenter becomes unclean and dirt accumulates.

Due to a number of factors, after years of use, fermenters produce a lot of dirt that cannot be completely removed during conventional cleaning, such as dirt that builds up on the walls of the tank. Therefore, the fermenter can be cleaned every four to five years during the off-season.