Title:
EXTERNAL MICRO-INTERFACE AMMOXIMATION REACTION SYSTEM AND METHOD
Document Type and Number:
WIPO Patent Application WO/2021/208201
Kind Code:
A1
Abstract:
The present invention provides an external micro-interface ammoximation reaction system and method. The external micro-interface ammoximation reaction system comprises an oximation reactor, a reaction clear liquid buffer tank, a tert-butanol recovery tower, an extraction tank, a water washing separator, a toluene oxime storage tank, a first rectifying tower, a second rectifying tower and a rearrangement reaction device, wherein a feeding hole is provided in a side wall of the oximation reactor and is connected to a micro-interface generator for dispersing and breaking gas into bubbles; a first inlet is provided in the middle of a side wall of the first rectifying tower, a first outlet is provided in the bottom of the first rectifying tower, a second inlet is provided in the upper portion of a side wall of the second rectifying tower, and a second outlet is provided in the bottom of the second rectifying tower; and the first inlet is connected to the top of the toluene oxime storage tank for leaving toluene oxime to stand and cool first before rectifying same, and the second outlet is connected to the rearrangement reaction device for carrying out a rearrangement reaction. According to the present invention, the micro-interface generator is arranged before the oximation reactor, such that the mass transfer area between ammonia gas and a liquid phase is increased, and the temperature and the pressure of an oximation reaction are reduced, thereby effectively reducing the energy consumption and improving the reaction efficiency.
Inventors:
ZHANG ZHIBING (CN)
ZHOU ZHENG (CN)
ZHANG FENG (CN)
LI LEI (CN)
MENG WEIMIN (CN)
WANG BAORONG (CN)
YANG GAODONG (CN)
LUO HUAXUN (CN)
YANG GUOQIANG (CN)
TIAN HONGZHOU (CN)
CAO YU (CN)
ZHOU ZHENG (CN)
ZHANG FENG (CN)
LI LEI (CN)
MENG WEIMIN (CN)
WANG BAORONG (CN)
YANG GAODONG (CN)
LUO HUAXUN (CN)
YANG GUOQIANG (CN)
TIAN HONGZHOU (CN)
CAO YU (CN)
Application Number:
PCT/CN2020/092779
Publication Date:
October 21, 2021
Filing Date:
May 28, 2020
Export Citation:
Assignee:
NANJING YANCHANG REACTION TECH RESEARCH INSTITUTE CO LTD (CN)
International Classes:
C07C249/04; C07C249/14; C07C251/44; C07D201/04; C07D223/10
Foreign References:
| CN102675176A | 2012-09-19 | |||
| CN210045215U | 2020-02-11 | |||
| CN205948418U | 2017-02-15 |
Other References:
ZHANG, ZHIBING ET AL.: "Overview of Microinterface Intensification in Multiphase Reaction Systems", CIESC JOURNAL, vol. 69, no. 1, 31 December 2018 (2018-12-31), pages 44 - 49, XP009526633, ISSN: 0438-1157
Attorney, Agent or Firm:
BEIJING ZHONGSUO INTELLECTUAL PROPERTY AGENCY CO. LTD (CN)
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