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    Cyclic process for producing potassium nitrate and ammonium chloride
    6.
    发明授权
    Cyclic process for producing potassium nitrate and ammonium chloride 失效
    生产硝酸钾和氯化铵的循环方法

    公开(公告)号：US3595609A

    公开(公告)日：1971-07-27

    申请号：US3595609D

    申请日：1969-10-13

    申请人： ALLIED CHEM

    发明人： BECKHAM LELAND J

    IPC分类号： C01C1/16 ,  C01D9/10 ,  C01D9/16

    CPC分类号： C01C1/164 ,  C01D9/10

    摘要： POTASSIUM CHLORIDE AND WATER AND ADDED TO A FIRST AQUEOUS NITRATE-CHLORIDE MOTHER LIQUOR HAVING A

    K+/(K++NH4+)

    MOL RATIO OF NOT MORE THAN ABOUT 0.37 TO FORM A POTASSIUM NITRATE CRYSTALLIZATION MEDIUM. THE MEDIUM IS COOLED TO PRECIPITATE CRYSTALLINE POTASSIUM NITRATE AND FORM A SECOND NITRATE-CHLORIDE MOTHER LIQUOR. AFTER SEPARATION OF THE POTASSIUM NITRATE, AMMONIUM NITRATE IS ADDED TO THE SECOND MOTHER LIQUOR, ALL ADDED WATER IS EVAPORATED TO FORM AN AMMONIUM CHLORIDE CRYSTALLIZATION MEDIUM, AND AMMONIUM CHLORIDE IS CRYSTALLIZED AT A TEMPERATURE HIGHER THAN THE POTASSIUM NITRITE CRYSTALLIZATION. THE AMMONIUM CHLORIDE IS SEPARATED, AND THE RESIDUAL MOTHER LIQUOR IS RECYCLED TO RECEIVE ADDITIONAL POTASSIUM CHLORIDE AND WATER. THE MAINTENANCE OF A NET BALANCE OF COM-

    PONENTS PERMITS CONTINUOUS OPERATION OF A CYCLIC METATHESIS OPERATION.