Process for concentration of cyclohexane oxidate
    2.
    发明授权
    Process for concentration of cyclohexane oxidate 失效
    环己烷氧化物浓缩方法

    公开(公告)号:US4080387A

    公开(公告)日:1978-03-21

    申请号:US725753

    申请日:1976-09-23

    IPC分类号: C07C407/00 C07C179/08

    摘要: A cyclohexane oxidate containing from about 2% to about 12% cyclohexyl hydroperoxide is modified by the addition of tertiary butyl alcohol. A feedstock containing the cyclohexane oxidate and from about 13% to about 67% tertiary butyl alcohol is directed to a vacuum distillation zone. An azeotrope of tertiary butyl alcohol and cyclohexane is recovered as distillate in the vacuum distillation zone, providing a bottoms fraction containing cyclohexyl hydroperoxide in a greater concentration than in he feedstock. Such CHHP concentration in the bottoms may be in a range from about 10% to about 30%. Cyclohexyl hydroperoxide can decompose to form products including cyclohexanol and cyclohexanone and this or other decompositions occur more rapidly at the elevated temperatures of any distillation, thus hampering efforts at concentration of CHHP. By using TBA as an azeotroping agent, the CHHP is satisfactorily concentrated with an advantageously small amount of decomposition of CHHP.

    摘要翻译: 含有约2%至约12%环己基氢过氧化物的环己烷氧化物通过加入叔丁醇进行改性。 含有环己烷氧化物和约13%至约67%叔丁醇的原料被引导至真空蒸馏区。 在真空蒸馏区中回收叔丁醇和环己烷的共沸物作为馏出物,提供含有比在其原料中更大浓度的环己基氢过氧化物的塔底馏分。 底部中的这种CHHP浓度可以在约10%至约30%的范围内。 环己基氢过氧化物可以分解形成包括环己醇和环己酮的产物,这种或其他分解在任何蒸馏的升高的温度下更快地发生,从而妨碍了CHHP浓缩的努力。 通过使用TBA作为共沸剂,CHHP令人满意地浓缩,有利地是少量的CHHP分解。