Title:
EXTERNAL MICRO-INTERFACE OXIDATION SYSTEM AND METHOD FOR PREPARING TEREPHTHALIC ACID FROM P-XYLENE
Document Type and Number:
WIPO Patent Application WO/2021/196388
Kind Code:
A1
Abstract:
An external micro-interface oxidation system for preparing terephthalic acid from p-xylene. The oxidation system comprises: a first reactor, a rectifying tower, and a second reactor which are sequentially connected. A first outlet is formed on the side wall of the first reactor, a first inlet is formed on the side wall of the second reactor, a material inlet is formed on the side wall of the rectifying tower, and a material outlet is formed on the bottom of the rectifying tower. The first outlet is connected to the material inlet of the rectifying tower, and the first inlet is connected to the material outlet of the rectifying tower. A first micro-interface generator is provided outside the first reactor, and a second micro-interface generator is provided outside the second reactor; the side wall of the first micro-interface generator is connected to a first air inlet, and the bottom is connected to a raw material inlet; the bottom of the second micro-interface generator is connected to a second air inlet. The micro-interface generator is placed outside the reactor and a sectional process is used, so that the problem of low reaction efficiency in conventional processes is solved, and the costs are saved for enterprises.
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/CN2020/092772
Publication Date:
October 07, 2021
Filing Date:
May 28, 2020
Export Citation:
Assignee:
NANJING YANCHANG REACTION TECH RESEARCH INSTITUTE CO LTD (CN)
International Classes:
B01J8/08; B01D3/00; B01J10/00
Foreign References:
| CN109865493A | 2019-06-11 | |||
| CN101531588A | 2009-09-16 | |||
| CN110002988A | 2019-07-12 |
Other References:
ZHANG ZHIBING; TIAN HONGZHOU; ZHANG FENG; ZHOU ZHENG: "Overview of Microinterface Intensification in Multiphase Reaction Systems", CIESC JOURNAL, HUAXUE GONGYE CHUBANSHE, CN, vol. 69, no. 1, 6 November 2017 (2017-11-06), CN, pages 44 - 49, XP009526633, ISSN: 0438-1157, DOI: 10.11949/j.issn.0438-1157.20171400
Attorney, Agent or Firm:
BEIJING ZHONGSUO INTELLECTUAL PROPERTY AGENCY CO. LTD (CN)
Download PDF: