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1. WO2020191789 - PLUG FLOW DISTILLATION TRAY AND METHOD FOR PREPARING ISOPHORON BY LIQUID-PHASE CONDENSATION OF ACETONE

Publication Number WO/2020/191789
Publication Date 01.10.2020
International Application No. PCT/CN2019/080512
International Filing Date 29.03.2019
IPC
B01D 3/14 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
3Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
14Fractional distillation
C07C 49/603 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
49Ketones; Ketenes; Dimeric ketenes; Ketonic chelates
587Unsaturated compounds containing a keto group being part of a ring
603of a six-membered ring
C07C 45/74 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
45Preparation of compounds having C=O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
61by reactions not involving the formation of C=O groups
67by isomerisation; by change of size of the carbon skeleton
68by increase in the number of carbon atoms
72by reaction of compounds containing C=O groups with the same or other compounds containing C=O groups
74combined with dehydration
C07C 45/82 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
45Preparation of compounds having C=O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
78Separation; Purification; Stabilisation; Use of additives
81by change in the physical state, e.g. crystallisation
82by distillation
CPC
B01D 3/14
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
3Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
14Fractional distillation ; or use of a fractionation or rectification column
C07C 2601/16
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
2601Systems containing only non-condensed rings
12with a six-membered ring
16the ring being unsaturated
C07C 45/74
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
45Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
61by reactions not involving the formation of >C = O groups
67by isomerisation; by change of size of the carbon skeleton
68by increase in the number of carbon atoms
72by reaction of compounds containing >C = O groups with the same or other compounds containing >C = O groups
74combined with dehydration
C07C 45/82
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
45Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
78Separation; Purification; Stabilisation; Use of additives
81by change in the physical state, e.g. crystallisation
82by distillation
Y02P 20/10
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
20Technologies relating to chemical industry
10General improvement of production processes causing greenhouse gases [GHG] emissions
Applicants
  • 万华化学集团股份有限公司 WANHUA CHEMICAL GROUP CO., LTD. [CN]/[CN]
  • 万华化学(宁波)有限公司 WANHUA CHEMICAL (NINGBO) CO., LTD. [CN]/[CN]
Inventors
  • 何岩 HE, Yan
  • 黎源 LI, Yuan
  • 田博 TIAN, Bo
  • 边路路 BIAN, Lulu
  • 周锐 ZHOU, Rui
  • 员玫 YUAN, Mei
  • 李金明 LI, Jinming
  • 孙媛媛 SUN, Yuanyuan
Agents
  • 北京信诺创成知识产权代理有限公司 SINO-CREATIVITY INTELLECTUAL PROPERTY LAW FIRM
Priority Data
201910237769.827.03.2019CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) PLUG FLOW DISTILLATION TRAY AND METHOD FOR PREPARING ISOPHORON BY LIQUID-PHASE CONDENSATION OF ACETONE
(FR) PLATEAU DE DISTILLATION À ÉCOULEMENT PISTON ET PROCÉDÉ DE PRÉPARATION D'ISOPHORINE PAR CONDENSATION EN PHASE LIQUIDE DE L'ACÉTONE
(ZH) 平推流精馏塔板及丙酮液相缩合制备异佛尔酮的方法
Abstract
(EN)
The present invention provides a plug flow distillation tray and a method for preparing isophorone by liquid-phase condensation of acetone. The plug flow distillation tray provided by the present invention comprises a tray and a plug flow assembly provided on the tray, the plug flow assembly comprising a downcomer, a leveled overflow weir, a light-heavy phase flow dividing element, a liquid receiving tray I and a flow guide element; the downcomer is connected to the tray, and the leveled overflow weir is provided on an inlet of the downcomer; the light-heavy phase flow dividing element is provided in the downcomer and is located below the leveled overflow weir; the liquid receiving tray I is connected to the tray, and is located on a side opposite to the side where the downcomer is connected to the tray; the flow guide element is provided above the junction of the liquid receiving tray I and the tray, and the flow guide element is provided with a plurality of flow guide passages. A pressurized reactive distillation column comprising the plug flow distillation tray of the present invention can be used for performing post-treatment of an IP (isophorone)/alkali liquid system which is easy to foam, so that the liquid phase can be distributed and flow relatively evenly, thereby facilitating the improvement of the reaction effect.
(FR)
La présente invention concerne un plateau de distillation à écoulement piston et un procédé de préparation d'isophorone par condensation en phase liquide de l'acétone. Le plateau de distillation à écoulement piston selon la présente invention comprend un plateau et un ensemble à écoulement piston disposé sur le plateau, l'ensemble à écoulement piston comprenant un trop-plein, un déversoir de trop-plein, un élément de division d'écoulement de phase lourde de lumière, un plateau de réception de liquide I et un élément de guidage d'écoulement ; le trop-plein est relié au plateau, et le déversoir de trop-plein est disposé sur une entrée du trop-plein ; l'élément de division de flux de phase légère-lourde est disposé dans le trop-plein et est situé au-dessous du déversoir de trop-plein arasé ; le plateau de réception de liquide I est relié au plateau, et est situé sur un côté opposé au côté où le trop-plein est relié au plateau ; l'élément de guidage d'écoulement est disposé au-dessus de la jonction du plateau de réception de liquide I et du plateau, et l'élément de guidage d'écoulement est pourvu d'une pluralité de passages de guidage d'écoulement. Une colonne de distillation réactive sous pression comprenant le plateau de distillation à écoulement piston de la présente invention peut être utilisée pour effectuer un post-traitement d'une IP (isophorone)/liquide alcalin qui est facile à mousser, de sorte que la phase liquide puisse être distribuée et s'écouler de façon relativement uniforme, ce qui facilite l'amélioration de l'effet de réaction.
(ZH)
本发明提供一种平推流精馏塔板及丙酮液相缩合制备异佛尔酮的方法,本发明提供的平推流精馏塔板,包括塔盘和设于塔盘上的平推流组件,平推流组件包括降液管、分级溢流堰、轻重相分流元件、受液盘I和导流元件;降液管与塔盘连接,分级溢流堰设于降液管的入口上;轻重相分流元件设于降液管内且位于所述分级溢流堰下方;受液盘I与塔盘连接,且位于降液管与塔盘相连接一侧的相对侧;导流元件设于受液盘I与塔盘连接处的上方,导流元件设有多个导流通道;应用含有本发明的平推流精馏塔板的加压反应精馏塔进行易发泡的IP(异佛尔酮)/碱液体系的后处理,可使液相较为均匀的分配和流动,进而利于改善反应效果。
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Latest bibliographic data on file with the International Bureau