Title:
PROCESS FOR PRODUCING H ACID BY RECYCLING ALKALI FUSION MOTHER LIQUOR
Document Type and Number:
WIPO Patent Application WO/2020/052577
Kind Code:
A1
Abstract:
A process for producing H acid by recycling an alkali fusion mother liquor. The alkali fusion mother liquor is used as a neutralization liquor for a denitration reaction liquor, or a neutralization liquor for a denitration liquor after cooling, crystallization, and filtration of filter cake. The neutralized denitration reaction liquor is then reduced to produce an amino T acid. The filtrate obtained after cooling and filtration of the denitration liquor is subjected to coordinaton extraction to obtain the amino T acid, and then subjected to reverse extraction and reduction to produce amino T acid. The diluted acid remaining after the nitro T acid in the denitrification liquor filtrate has been extracted is used for the acidification of the amino T acid, thereby reducing the amount of acid and alkali and the production cost in the production process of H acid.
Inventors:
WANG ZAIJUN (CN)
ZHANG KEHONG (CN)
REN SHUAICHANG (CN)
YANG HAIJUN (CN)
SHI YAN (CN)
LIU JIKANG (CN)
DAI XINGYUAN (CN)
ZHANG YUNJING (CN)
ZHU DEJUN (CN)
LIU RUIFEN (CN)
ZHANG KEHONG (CN)
REN SHUAICHANG (CN)
YANG HAIJUN (CN)
SHI YAN (CN)
LIU JIKANG (CN)
DAI XINGYUAN (CN)
ZHANG YUNJING (CN)
ZHU DEJUN (CN)
LIU RUIFEN (CN)
Application Number:
PCT/CN2019/105277
Publication Date:
March 19, 2020
Filing Date:
September 11, 2019
Export Citation:
Assignee:
SHANDONG CHUANGLAN YAOSHI ENVIRONMENTAL PROTECTION TECH CO LTD (CN)
International Classes:
C07C309/50; C07C303/22; C07C309/40
Foreign References:
| CN109096155A | 2018-12-28 | |||
| CN109096155A | 2018-12-28 | |||
| CN105669500A | 2016-06-15 | |||
| CN104592063A | 2015-05-06 | |||
| US4534905A | 1985-08-13 |
Attorney, Agent or Firm:
BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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