Disposal of waste materials from unsaturated nitrile
    1.
    发明授权
    Disposal of waste materials from unsaturated nitrile 失效
    处理不饱和腈废料

    公开(公告)号:US3895050A

    公开(公告)日:1975-07-15

    申请号:US41407673

    申请日:1973-11-08

    申请人: BADGER CO

    发明人: SHEELY HAROLD R

    IPC分类号: C07C121/02

    摘要: A method of recovering and disposing of waste materials from a plant for manufacturing unsaturated aliphatic nitriles or aromatic nitriles whereby waste water, unreacted ammonia and byproducts such as HCN and acetonitrile are not condensed but remain with the absorber off-gas for ultimate disposal by incineration. The method employs a hydrocarbon solvent to adiabatically quench the reactor effluent and, after removal of polymer by-products, the partially quenched effluent is passed to a hot absorber column where the nitrile product but no ammonia and only some of the HCN are absorbed by the hydrocarbon solvent. The nitrile-solvent mixture is distilled to separately recover the solvent and nitrile product. The solvent is recycled. The hot absorber off-gases are cooled to recover water and then incinerated, with ammonia, HCN, acetonitrile and some vaporized solvent furnishing the necessary fuel values. In a preferred embodiment, solvent in the absorber overhead vapors is recovered by scrubbing with a high boiling oil.

    摘要翻译: 从用于制造不饱和脂族腈或芳族腈的植物中回收和处理废料的方法,其中废水,未反应的氨和副产物如HCN和乙腈不会冷凝,而是与吸收塔尾气保持最终处置,以最终处置 焚化。 该方法采用烃溶剂绝热淬灭反应器流出物,在除去聚合物副产物后,将部分淬灭的流出物通入热吸收塔,其中腈产物但不含氨,只有一些HCN被吸收 烃溶剂。 将腈 - 溶剂混合物蒸馏,分别回收溶剂和腈产物。 溶剂回收利用。 将热吸收器废气冷却回收水,然后用氨,HCN,乙腈和一些汽化溶剂焚烧,提供必要的燃料值。 在优选的实施方案中,吸收塔顶蒸气中的溶剂通过用高沸点油洗涤来回收。