Process for the high pressure methylation of 2,6-xylenol
    3.
    发明授权
    Process for the high pressure methylation of 2,6-xylenol 失效
    2,6-二甲苯酚高压甲基化方法

    公开(公告)号:US4126750A

    公开(公告)日:1978-11-21

    申请号:US857052

    申请日:1977-12-05

    摘要: High pressure methylation of 2,6-xylenol to produce 2,3,6-trimethylphenol is accomplished by maintaining the methanol/2,6-xylenol feed at temperature and pressures sufficient to keep the feed liquid in a reactor head then forcing the feed through orifices, expanding the feed into a mixed vapor liquid phase, the feed after expansion being in the range of reaction conditions of pressure and temperature while in the presence of the catalyst where the reaction takes place. The process avoids the current problems of uneven feed mixtures and catalyst tube plugging.

    摘要翻译: 2,6-二甲苯酚的高压甲基化制备2,3,6-三甲基苯酚是通过将甲醇/ 2,6-二甲苯酚进料保持在足够的温度和压力下将进料液体保持在反应器头中,然后强制进料通过 孔,将进料膨胀成混合汽相液相,膨胀后的进料在反应发生的催化剂存在下在压力和温度的反应条件的范围内。 该过程避免了当前不均匀的进料混合物和催化剂管堵塞的问题。