The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 31, 2026
Filed:
Oct. 16, 2020
The Regents of the University of California, Oakland, Oakland, CA (US);
Klemens Massonne, Ludwigshafen am Rhein, DE;
Hendrik De Winne, Antwerp, BE;
Torsten Mattke, Ludwigshafen am Rhein, DE;
Ahmad Dehestani, Walnut Creek, CA (US);
Sabine Weiguny, Ludwigshafen am Rhein, DE;
Stephan Zuend, Hayward, CA (US);
Eric Wesley Mcfarland, Santa Barbara, CA (US);
Behzad Tangeysh, Santa Barbara, CA (US);
Shizhao Su, Santa Barbara, CA (US);
Sabine Frischhut, Ludwigshafen am Rhein, DE;
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, Oakland, CA (US);
Abstract
The invention relates to a process for preparation of chlorine from hydrogen chloride comprising circulating a liquid melt comprising copper ions Cuwith n being a number in the range from 1 to 2, alkali cations and chloride ions Cl in a reactor system comprising three bubble lift reactors I, II and III, each comprising a reaction zone i, ii and iii respectively, wherein: ⋅ (a) in the reaction zone i of the first bubble lift reactor I, a liquid melt comprising copper ions Cu, alkali cations and chloride ions Cl− is contacted with oxygen at a temperature in the range from 395 to 405° C. so that the molar ratio Cu:Cuin the liquid melt increases, obtaining a liquid melt having an increased molar ratio Cu:Cu⋅ (b) the liquid melt obtained in (a) is circulated to the reaction zone ii in the second bubble lift reactor II, where the liquid melt is contacted with hydrogen chloride at a temperature in the range from 395 to 405° C. so that water is formed, obtaining a liquid melt being enriched in chloride anions (CI−) compared to the liquid melt obtained according to (a); ⋅ (c) circulating the liquid melt obtained in (b) to the reaction zone iii in the third bubble lift reactor III, which is operated at a temperature in the range from 420 to 430° C. so that chlorine (Cl) is formed, wherein Clis removed from the reaction zone iii and the third bubble lift reactor III respectively in gaseous form, leaving a liquid melt depleted of Cl-compared to the liquid melt obtained according to (b). The invention further relates to a reactor system comprising three bubble lift reactors I, II and III.