	US 12,391,718 B2
	Post-treatment method for sucrose-6-carboxylate chlorination reaction solution
Jiaxin Xia, Anhui (CN); Weiqiang Jiang, Anhui (CN); Zhengsong Zhang, Anhui (CN); Chaohui Chen, Anhui (CN); Qingyang Hu, Anhui (CN); Hao Zhang, Anhui (CN); and Yang Wang, Anhui (CN)
Assigned to ANHUI JINHE INDUSTRIAL CO., LTD., Anhui (CN)
Appl. No. 18/003,350
Filed by ANHUI JINHE INDUSTRIAL CO., LTD., Anhui (CN)
PCT Filed Sep. 18, 2020, PCT No. PCT/CN2020/116202 § 371(c)(1), (2) Date Dec. 27, 2022, PCT Pub. No. WO2022/056840, PCT Pub. Date Mar. 24, 2022.
Prior Publication US 2023/0242564 A1, Aug. 3, 2023
Int. Cl. C07H 13/08 (2006.01); C07H 1/06 (2006.01)

CPC C07H 13/08 (2013.01) [C07H 1/06 (2013.01)]

20 Claims

1. A post-treatment method for a sucrose-6-carboxylate chlorination reaction solution, comprising:

adding ammonia water or water to the sucrose-6-carboxylate chlorination reaction solution to obtain a mixture, and subjecting the mixture to a preliminary neutralization reaction;

introducing an ammonia gas into a reaction solution obtained after the preliminary neutralization at a predetermined temperature, adjusting a pH of the reaction solution to a predetermined alkalinity range, and conducting an ammonia gas neutralization reaction at a reaction temperature for a predetermined reaction time; and

adjusting, in an acid value adjustment reaction, a pH of a reaction solution obtained after the ammonia gas neutralization using an acid to a predetermined acidity range, to obtain a neutralized reaction solution.