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    • 6. 发明申请
    • PROCESS FOR MONITORING THE CATALYTIC ACTIVITY OF AN IONIC LIQUID
    • 监测离子液体催化活性的方法
    • WO2016202901A1
    • 2016-12-22
    • PCT/EP2016/063832
    • 2016-06-16
    • SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.SHELL OIL COMPANYCHINA UNIVERSITY OF PETROLEUM (BEIJING)
    • LIU, ZhichangZHANG, RuiZHANG, XuanMENG, XianghaiLIU, HaiyanXU, ChunmingKLUSENER, Peter, Anton, August
    • G01N21/27G01N21/79
    • G01N21/272B01J31/0279B01J2231/32C07C2/60C07C2531/02G01N21/35G01N21/3577G01N21/79
    • The present invention relates to a process for monitoring the catalytic activity of an ionic liquid and for the regeneration of the ionic liquid in continuous conversion of an olefin in an alkylation, comprising the steps of: (a) providing a halogen-aluminate ionic liquid; (b) subjecting a hydrocarbon mixture comprising at least an isoparaffin or an aromatic hydrocarbon and an olefin to a continuous alkylation reaction between the isoparaffin or the aromatic hydrocarbon and the olefin, wherein the hydrocarbon mixture is reacted with the ionic liquid of step (a) to obtain an effluent comprising at least an alkylate product and an ionic liquid phase; (c) taking a sample of the ionic liquid phase; (d) adding a portion of an organic compound to a sample of the ionic liquid phase of step (c) or adding a portion of the ionic liquid phase of step (c) to a sample of an organic compound; (e) recording an infrared spectrum of a mixture as obtained in step (d) to obtain at least one absorption peak; (f) repeating steps (d) and (e) until at least one absorption peak obtained in step (e) reaches a maximum value or a minimum value; (g) determining at the maximum value or minimum value of the absorption peak of step (f ) : the total amount of the organic compound added in portions to the sample of the ionic liquid phase or determining the total amount of the ionic liquid phase added in portions to the sample of organic compound; (h) calculating the catalytic activity of the ionic liquid on the basis of: the total amount of the organic compound added in portions as determined in step (g) or the total amount of ionic liquid phase added in portions as determined in step (g); and (i) adding one or more aluminium halides or a mixture of aluminium halides to the continuous alkylation reaction of step (b) such that the activity of step (h) stays above the minimum level at which the conversion of the olefin in step (b) is lower than 100%.
    • 本发明涉及一种用于监测离子液体的催化活性和用于在烷基化中连续转化烯烃的离子液体再生的方法,包括以下步骤:(a)提供卤化铝酸盐离子液体; (b)使包含至少异链烷烃或芳族烃和烯烃的烃混合物在异链烷烃或芳族烃与烯烃之间进行连续的烷基化反应,其中烃混合物与步骤(a)的离子液体反应, 以获得包含至少一种烷基化物产物和离子液相的流出物; (c)取离子液相样品; (d)向步骤(c)的离子液相的样品中加入一部分有机化合物,或将一部分步骤(c)的离子液相添加到有机化合物的样品中; (e)记录在步骤(d)中获得的混合物的红外光谱,以获得至少一个吸收峰; (f)重复步骤(d)和(e),直到在步骤(e)中获得的至少一个吸收峰达到最大值或最小值; (g)确定步骤(f)的吸收峰的最大值或最小值:部分添加到离子液相样品中的有机化合物的总量或确定添加的离子液相的总量 部分到有机化合物的样品; (h)基于以下步骤计算离子液体的催化活性:步骤(g)中测定的部分添加的有机化合物的总量或步骤(g)中测定的部分加入的离子液相的总量 ); 和(i)将一种或多种卤化铝或卤化铝的混合物加入到步骤(b)的连续烷基化反应中,使得步骤(h)的活性保持在步骤(a)中烯烃转化率的最低水平 b)低于100%。