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公开(公告)号：US3927175A
公开(公告)日：1975-12-16
申请号：US14644371
申请日：1971-05-24
Applicant: ALLIED CHEM
Inventor： GAROFANO NORMAN R , PORT EUGENE B
CPC classification number: C01D7/26
Abstract: Present process relates to the purification of carbonate process solution which comprises passing said carbonate process solution through a bed of activated carbon to remove organic contaminants from said solution until the adsorbent capacity of said bed is reduced and regeneration of said bed is effected by passing an aqueous solution through said bed to remove the adsorbed organics, said aqueous solution being maintained at elevated temperatures.
Abstract translation: 本方法涉及碳酸盐工艺溶液的纯化，其包括使所述碳酸盐工艺溶液通过活性炭床以从所述溶液中除去有机污染物，直到所述床的吸附能力降低，并且通过使水 溶液通过所述床除去吸附的有机物，所述水溶液保持在升高的温度。
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2.发明授权Process for increasing bulk density of sodium carbonate by the addition of calcium ion 失效通过添加钙离子来增加碳酸钙的体积密度的方法
公开(公告)号：US3705790A
公开(公告)日：1972-12-12
申请号：US3705790D
申请日：1970-12-01
Applicant: ALLIED CHEM
Inventor： GAROFANO NORMAN R , FOLLOWS ALAN G
Abstract: INVENTION RELATES TO AN IMPROVED PROCESS FOR THE PREPARATION OF SODIUM CARBONATE PRECURSOR CRYSTALS BY A CRYSTALLIZATION PROCESS WHICH INVOLVES FORMING A FIRST CROP OF SAID CARBONATE PRECURSOR CRYSTALS FROM A SUBSTANTIALLY SATURATED CARBONATE PROCESS SOLUTION AND PROVIDING IN THE MOTHER LIQUOR SEPARATD FROM SAID FIRST CROP OF CRYSTALS A SUFFICIENT AMOUNT OF CALCIUM IONS SUCH THAT WHEN THE MOTHER LIQUOR IS SUBJECTED TO CRYSTALLIZATION AT A TEMPERATURE HIGHER THAN THAT EMPLOYED TO OBTAIN THE FIRST CROP OF SAID PRECURSOR CRYSTALS, A SECOND CROP OF SODIUM CARBONATE PRECURSOR CRYSTALS OF IMPROVED QUALITY IS OBTAINED.
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