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    Preparation method of cationic acrylamide sludge dehydrating agent

    • Last Update: 2021-12-31
    • Source: Internet
    • Author: User
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    Cationic acrylamide sludge dewatering agent

    [Preparation method] Polyacrylamide is the most widely used agent.


    The negatively charged colloid of cationic flocculant has excellent treatment effect and is widely used


    (1) Mix 2.


    (2) The emulsion polymerization method is used to initiate the reaction with the redox system of potassium sulfite and ammonium persulfate to prepare acrylamide and diallyldimethylamine chloride


    (3) Adjust the molar ratio of acrylamide and dimethylaminoethyl acrylate chloride according to the cationic degree of the final product, and an aqueous solution with a total monomer concentration of 20%-30%


    (4) In a four-necked flask equipped with nitrogen inlet and nitrogen outlet, 16.


    (5) Add 75 g of N-vinyl formamide monomer, 40 g of 10% polyvinyl alcohol solution, 250 g of water, and glycerol in a reactor equipped with a reflux condenser, a nitrogen gas pipe, a star stirrer, and an electric thermocouple.


    (6) Add 54 g of N-vinyl formamide monomer, 3 g of ethylhexyl acrylate, and 10% polyvinyl alcohol solution into a reactor equipped with a reflux condenser, a nitrogen gas pipe, a star stirrer, and an electric thermocouple.


    (7) The solid content of the polymer is 15%


    (8) The solid content of the polymer is 15%, and the ratio of acrylamide to dimethylaminoethyl acrylate chloromethylamine quaternary ammonium salt is 90/10


    (9)623848620.


    (10)60.


    (11)、、、、1500mL,335.


    (12) Calculate the dosage of various monomers, initiators and water based on the cationicity, solid content indicators and the amount of synthesized products


    Table 11-9 and Table 11-10 are the forecast analysis of the economic benefits of producing various cationic polyacrylamides with solid and liquid acrylamide as raw materials, respectively


    Table 11-9 Cost when using solid acrylamide as raw material


    Table 11-10 Cost when using liquid acrylamide as raw material

    Related Links: Synthetic Organic Cationic Sludge Dewatering Agent

     

     

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