Anhydrous reaction method for preparing polymeric ferric sulfate
A technology for polymerizing ferric sulfate and water reaction, applied in the direction of ferric sulfate, chemical recovery, etc., can solve the problems of long reaction time, large amount of catalyst, many equipment, etc., and achieve the effect of reducing production cost, energy consumption, and waste gas.
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[0009] The method for preparing polymeric ferric sulfate by anhydrous reaction, its steps are:
[0010] 1. In a professional stainless steel reactor with a volume of 2-20 cubic meters, add 2-20 tons of industrial ferrous sulfate and 0.2-1.8 tons of sulfuric acid; industrial ferrous sulfate: sulfuric acid is 10:1;
[0011] 2. Under the condition of close to vacuum, put 2.5-3.5kg of catalyst into the stainless steel reaction device per ton of ferrous sulfate, and use sodium nitrite or dilute nitric acid as the catalyst;
[0012] 3. Open the oxygen valve of the reaction device, after reaching 0.02MPa, turn on pump stirring, maintain the pressure at 0.02-0.04MPa, and the reaction temperature within 100℃ until the oxygen pressure does not change; after 3-10 hours, after sampling and analysis are qualified , Open the vent valve, and send a small amount of tail gas to the alkali absorption tower for treatment. After the alkali liquor is saturated, it can be returned to the catalyst for recy...
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