	US 12,403,444 B2
	Controlled production of aqueous halogen solutions with varying compositions
Andrew K. Boal, Longmont, CO (US)
Assigned to DE NORA HOLDINGS US, INC., Concord, OH (US)
Appl. No. 17/774,442
Filed by De Nora Holdings US, Inc., Concord, OH (US)
PCT Filed Nov. 4, 2020, PCT No. PCT/US2020/058931 § 371(c)(1), (2) Date May 4, 2022, PCT Pub. No. WO2021/092048, PCT Pub. Date May 14, 2021.
Claims priority of provisional application 62/931,303, filed on Nov. 6, 2019.
Prior Publication US 2022/0395797 A1, Dec. 15, 2022
Int. Cl. B01J 14/00 (2006.01); B01J 19/00 (2006.01); B01J 19/24 (2006.01); C01B 11/20 (2006.01); C01B 11/22 (2006.01)

CPC B01J 14/00 (2013.01) [B01J 19/002 (2013.01); B01J 19/006 (2013.01); B01J 19/245 (2013.01); C01B 11/20 (2013.01); C01B 11/22 (2013.01); B01J 2219/00177 (2013.01); B01J 2219/00763 (2013.01)]

14 Claims

1. A system for producing a mixed aqueous halogen solution having at least two distinct halogen species, comprising:

(i) a first storage tank, the first storage tank is configured to contain an aqueous halide solution, and wherein the aqueous halide solution is devoid of chlorine;

(ii) a first mixing tank located downstream of the first storage tank, wherein the first mixing tank comprises a flow-impeding structure; and

(iii) piping for transporting a stream of an aqueous hypochlorite solution to the first mixing tank;

(iv) a second storage tank for storing a pH adjusting chemical;

(v) a static mixer for mixing the aqueous hypochlorite solution with the pH adjusting chemical before it is piped to the first mixing tank;

(vi) a first sensor suite, wherein the first sensor suite comprises at least a pH sensor to measure the pH of the pH adjusted aqueous hypochlorite solution before it is transported to the first mixing tank.