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公开(公告)号：US20140303398A1
公开(公告)日：2014-10-09
申请号：US14356604
申请日：2012-11-06
申请人： Yingjin YUAN , Tianjin University
发明人： Minhua Zhang , Xiuqin Dong , Minli Tao , Cheng Liu , Shengli Ouyang , Haoxi Jiang , Jing Ma , Guiming Li
IPC分类号： C07C67/05
摘要： The present invention discloses a method for producing vinyl acetate. Inert gas is introduced into cycling gas to improve the explosion limit of oxygen, enlarge a stable area of a reaction system and improve the oxygen concentration of the reaction system, thus reducing the reaction temperature, prolonging the service life of a catalyst, and improving the selectivity of the vinyl acetate. The inert gas is nitrogen or a mixture of nitrogen and methane. The concentration of the inert gas at the inlet of a reactor is 8 to 30 mol %. The molar concentration of the oxygen at the inlet of the reactor is 10.5 to 12 mol %.
摘要翻译： 本发明公开了一种乙酸乙烯酯的制造方法。 将惰性气体引入循环气体中以提高氧气的爆炸极限，扩大反应体系的稳定面积，提高反应体系的氧浓度，从而降低反应温度，延长催化剂的使用寿命， 乙酸乙烯酯的选择性。 惰性气体是氮气或氮气和甲烷的混合物。 反应器入口处惰性气体的浓度为8〜30摩尔％。 反应器入口处的氧摩尔浓度为10.5〜12摩尔％。
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公开(公告)号：US11939286B2
公开(公告)日：2024-03-26
申请号：US18023300
申请日：2021-09-23
申请人： TIANJIN UNIVERSITY
发明人： Minhua Zhang , Zhongfeng Geng , He Dong , Hao Gong , Yingzhe Yu , Shenghua Qian , Xiuqin Dong
摘要： The present disclosure relates to a method for producing vinyl acetate, comprising a vinyl acetate synthesis process, a vinyl acetate refining process and a separation process of vinyl acetate and ethyl acetate, including an acetic acid evaporator, an oxygen mixer, a vinyl acetate synthesis reactor, a first gas separating tower, a second gas separating tower, a recovered gas compressor, a water washing tower, an absorption tower and a desorption tower, a recycling gas compressor; the vinyl acetate refining process comprising an acetic acid tower, a crude VAC tower, and a fine VAC tower, a rectifying tower, an ethyl acetate tower, a water phase receiving tank, an extracting and rectifying tower and an ethyl acetate phase separator.
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