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The process aperfeicoado to recover sodium hidroxido residual liquid and discharged from polpamento stages and / or bleaching materials celulosicos
The process aperfeicoado to recover sodium hidroxido residual liquid and discharged from polpamento stages and / or bleaching materials celulosicos
1454660 Regeneration of sodium hydroxide TOYO PULP CO Ltd 7 Oct 1974 [23 Feb 1974] 43350/74 Heading C1A Sodium hydroxide is recovered from waste liquors from pulping/bleaching cellulosic materials by roasting ferric oxide with the concentrated liquor and immersing the resulting mix in water thus regenerating NaOH and precipitating Fe 2 O 3 which is re-used for further reclamation. Roasting is preferably undertaken at from 700‹ to 900‹ C. with the smelted mix being immersed in water preferably maintained at 50‹ to 100‹ C.
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机译:1454660氢氧化钠的再生TOYO PULP CO Ltd 1974年10月7日[1974年2月23日]标题C1A通过将氧化铁与浓缩液一起焙烧并将其浸入水中,从制浆/漂白纤维素材料的废液中回收氢氧化钠。因此再生NaOH并沉淀出Fe 2 O 3,可将其重新用于进一步的回收。焙烧最好在700℃至900℃进行,将熔化的混合物浸入水中,最好保持在50℃至100℃。
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