公开(公告)号：US09296674B2

公开(公告)日：2016-03-29

申请号：US13959467

申请日：2013-08-05

Applicant: SABIC INNOVATIVE PLASTICS IP B.V.

Inventor： Mark Erik Nelson ,  Andrey Yurievich Sokolov ,  Ilya Yurievich Krupenko ,  Valery Yurievich Aristovich

IPC: C07C45/82 ,  C07C45/85

CPC classification number: C07C45/85 ,  C07C45/82 ,  C07C49/08

Abstract: A method for purifying a crude acetone raw material containing low molecular weight impurities using two columns is disclosed. Crude acetone raw material is fed into a first column; adding an alkaline reagent and an oxidative agent into the first column to form high molecular weight impurities; removing a top fraction from the first column by distillation to form bottom fraction containing an acetone mixture containing high molecular weight impurities; feeding the bottom fraction containing the acetone mixture obtained to a second rectification column at a charge point on the column; adding an alkaline reagent to the second column above the charge point of the bottom fraction fed; and separating a purified acetone from the high molecular weight impurities and removing the purified acetone as a top fraction by distillation in the second column, wherein the second rectification column is operated at atmospheric pressure.

Abstract translation: 公开了使用两列纯化含有低分子量杂质的粗丙酮原料的方法。 将粗丙酮原料送入第一塔; 向第一塔中加入碱性试剂和氧化剂以形成高分子量杂质; 通过蒸馏从顶部馏分中除去顶部馏分以形成含有含有高分子量杂质的丙酮混合物的底部馏分; 将所获得的含有丙酮混合物的塔底馏分在柱上的充电点向第二精馏塔进料; 向供给的底部馏分的充电点以上的第二塔加入碱性试剂; 并将纯化的丙酮与高分子量杂质分离，并在第二塔中通过蒸馏除去纯化的丙酮作为顶级馏分，其中第二精馏塔在大气压下运行。

公开(公告)号：US20130319846A1

公开(公告)日：2013-12-05

申请号：US13959467

申请日：2013-08-05

Applicant: SABIC INNOVATIVE PLASTICS IP B.V.

Inventor： Mark Erik Nelson ,  Andrey Yurievich Sokolov ,  Ilya Yurievich Krupenko ,  Valery Yurievich Aristovich

IPC: C07C45/85

CPC classification number: C07C45/85 ,  C07C45/82 ,  C07C49/08

Abstract: A method for purifying a crude acetone raw material containing low molecular weight impurities using two columns is disclosed. The method comprises the steps of feeding the crude acetone raw material into a first column; adding an alkaline reagent and an oxidative agent into the first column to form high molecular weight impurities; removing a top fraction from the first column by distillation to form bottom fraction comprising an acetone mixture comprising high molecular weight impurities; feeding the bottom fraction comprising the acetone mixture obtained to a second rectification column at a charge point on the column; adding an alkaline reagent to the second column above the charge point of the bottom fraction fed; and separating a purified acetone from the high molecular weight impurities and removing the purified acetone as a top fraction by distillation in the second column, wherein the second rectification column is operated at atmospheric pressure.

Abstract translation: 公开了使用两列纯化含有低分子量杂质的粗丙酮原料的方法。 该方法包括将粗丙酮原料进料到第一塔中的步骤; 向第一塔中加入碱性试剂和氧化剂以形成高分子量杂质; 通过蒸馏从顶部馏分中除去顶部馏分以形成包含含有高分子量杂质的丙酮混合物的底馏分; 将所获得的包含丙酮混合物的塔底馏分在柱上的充电点进料至第二精馏塔; 向供给的底部馏分的充电点以上的第二塔加入碱性试剂; 并将纯化的丙酮与高分子量杂质分离，并在第二塔中通过蒸馏除去纯化的丙酮作为顶级馏分，其中第二精馏塔在大气压下运行。