	US 12,297,118 B2
	Process for producing salt from waste aqueous streams of organic peroxides production
Maria Steensma, Arnhem (NL); Martinus Catharinus Tammer, Diepenveen (NL); and Claus Decker, Emmerich am Rhein (DE)
Assigned to NOURYON CHEMICALS INTERNATIONAL B.V., Arnhem (NL)
Appl. No. 17/310,327
Filed by NOURYON CHEMICALS INTERNATIONAL B.V., Arnhem (NL)
PCT Filed Jan. 28, 2020, PCT No. PCT/EP2020/052039 § 371(c)(1), (2) Date Jul. 28, 2021, PCT Pub. No. WO2020/157061, PCT Pub. Date Aug. 6, 2020.
Claims priority of application No. 19154884 (EP), filed on Jan. 31, 2019.
Prior Publication US 2022/0081307 A1, Mar. 17, 2022
Int. Cl. C01D 3/06 (2006.01); B01D 3/38 (2006.01); B01D 11/04 (2006.01)

CPC C01D 3/06 (2013.01) [B01D 3/38 (2013.01); B01D 11/0492 (2013.01); B01D 2257/708 (2013.01); C01P 2006/82 (2013.01)]

20 Claims

1. Process for producing a salt comprising NaCl and/or KCl from aqueous effluents from one or more organic peroxide production processes, said process comprising the following steps:

a) ensuring the pH of the aqueous effluents to be from about 1-about 5,

b) separating the effluents in a liquid organic layer and an aqueous layer,

c) removing the organic layer,

d) raising the pH of the aqueous layer to a value from about 6-about 14,

e) crystallizing the salt from the aqueous layer having a pH from about 6-about 14,

wherein step c) comprises using an oil skimmer.