A production device for potassium dihydrogen phosphate

Abstract

The utility model discloses a production device for potassium dihydrogen phosphate, which relates to the technical field of potassium dihydrogen phosphate production. The inlet of the reaction tank is respectively connected with a calcium phosphate tank, a concentrated sulfuric acid tank and a neutralizing agent tank. The outlet of the reaction tank is connected with a plate and frame filter. The liquid phase outlet of the plate and frame filter is connected with a first filtrate tank. The outlet of the first filtrate tank is connected with a refining tank. The inlet of the refining tank is connected with a desulfurizing agent tank. The outlet of the refining tank is connected with a refined liquid tank. The outlet of the refined liquid is connected with a crystallization tank. The outlet of the crystallization tank is connected with a centrifuge. The solid phase outlet of the centrifuge is connected with a crude potassium dihydrogen phosphate tank. Using concentrated sulfuric acid for acidification reaction has high efficiency, is easy to scale up, and the by-products can be comprehensively utilized, with less environmental protection pressure, improving the reaction yield and shortening the production cycle. The refining process is simple, with low production cost and good impurity removal effect, greatly improving the purity of the product.

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