Title:
KETTLE-TYPE CONTINUOUS PRODUCTION METHOD FOR GLYCINE
Document Type and Number:
WIPO Patent Application WO/2022/127153
Kind Code:
A1
Abstract:
Disclosed is a kettle-type continuous production method for glycine. The method comprises: carrying out hydantoin synthesis and hydrolysis reaction on glycolonitrile and ammonium carbonate, ammonium bicarbonate and water in a reactor with multiple kettles in series, and then carrying out purification, concentration, crystallization, separation and drying to obtain refined glycine. The reactor with multiple kettles in series consists of a hydantoin synthesis section and a hydantoin hydrolysis section which are connected in sequence, wherein the hydantoin synthesis section comprises a first group of reaction kettles having a reaction temperature of 80-100ºC and a second group of reaction kettles having a reaction temperature of 100-120ºC, the first group of reaction kettles or the second group of reaction kettles respectively consisting of one or two or more reaction kettles connected in series; and the hydantoin hydrolysis section comprises a third group of reaction kettles having a reaction temperature of 130-150ºC and a fourth group of reaction kettles having a reaction temperature of 160-180ºC, the third group of reaction kettles or the fourth group of reaction kettles respectively consisting of one or two or more reaction kettles connected in series.
Inventors:
ZHANG WEI (CN)
WU NAN (CN)
HAO RUIYUAN (CN)
LI XIN (CN)
HAN MENG (CN)
GONG WENZHAO (CN)
YANG RENJUN (CN)
HU HUIMIN (CN)
MENG YING (CN)
MEI XUE (CN)
YUAN QIUHUA (CN)
LI WEIBIN (CN)
GUO XUQING (CN)
HAN YANHUI (CN)
WANG SHAOKE (CN)
WU NAN (CN)
HAO RUIYUAN (CN)
LI XIN (CN)
HAN MENG (CN)
GONG WENZHAO (CN)
YANG RENJUN (CN)
HU HUIMIN (CN)
MENG YING (CN)
MEI XUE (CN)
YUAN QIUHUA (CN)
LI WEIBIN (CN)
GUO XUQING (CN)
HAN YANHUI (CN)
WANG SHAOKE (CN)
Application Number:
PCT/CN2021/112637
Publication Date:
June 23, 2022
Filing Date:
August 14, 2021
Export Citation:
Assignee:
HUAYANG NEW MATERIAL TECH GROUP CO LT (CN)
International Classes:
C07C227/24; C07C227/40; C07C227/42; C07C229/08; C07D233/74
Foreign References:
CN112552197A | 2021-03-26 | |||
CN107325015A | 2017-11-07 | |||
CN109678744A | 2019-04-26 | |||
CN109970658A | 2019-07-05 | |||
CN110698357A | 2020-01-17 | |||
CN207646100U | 2018-07-24 |
Other References:
XU, ZEHUI: "Current Status and Developing Trend of Glycin Production", TECHNO-ECONOMICS IN PETROCHEMICALS, vol. 20, no. 5, 31 December 2004 (2004-12-31), pages 41 - 45, XP055943045
Attorney, Agent or Firm:
CONICESS INTELLECTUAL PROPERTY AGENCY OFFICE (CN)
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