PROCESS FOR PREPARATION OF CHLORINE FROM HYDROGEN CHLORIDE

Organization Name

BASF SE

Inventor(s)

Klemens Massonne of Ludwigshafen am Rhein (DE)

Hendrik De Winne of Antwerp (BE)

Torsten Mattke of Ludwigshafen am Rhein (DE)

Ahmad Dehestani of Walnut Creek CA (US)

Sabine Weiguny of Ludwigshafen am Rhein (DE)

Stephan Zuend of Hayward CA (US)

Eric Wesley Mcfarland of Santa Barbara CA (US)

Behzad Tangeysh of Santa Barbara CA (US)

Shizhao Su of Santa Barbara CA (US)

Sabine Frischhut of Ludwigshafen am Rhein (DE)

PROCESS FOR PREPARATION OF CHLORINE FROM HYDROGEN CHLORIDE - A simplified explanation of the abstract

This abstract first appeared for US patent application 17769400 titled 'PROCESS FOR PREPARATION OF CHLORINE FROM HYDROGEN CHLORIDE

The invention involves a process for preparing chlorine from hydrogen chloride using a liquid melt containing copper ions, alkali cations, and chloride ions in a reactor system with three bubble lift reactors.

The liquid melt is circulated through the reactors to increase the molar ratio of copper ions in the melt by contacting it with oxygen in the first reactor.
In the second reactor, the liquid melt is enriched in chloride anions by reacting with hydrogen chloride to form water.
The third reactor operates at a higher temperature to form chlorine gas, which is then removed, leaving behind a liquid melt depleted of chloride.

Potential Applications: - Industrial production of chlorine gas - Chemical manufacturing processes requiring chlorine - Water treatment and disinfection applications

Problems Solved: - Efficient and controlled production of chlorine from hydrogen chloride - Recycling of copper ions in the process - Reduction of waste and byproducts

Benefits: - Cost-effective production of chlorine - Environmentally friendly process - Improved resource utilization

Commercial Applications: Title: Innovative Process for Chlorine Production This technology can be utilized in industries such as chemical manufacturing, water treatment plants, and wastewater treatment facilities. The efficient production of chlorine gas can lead to cost savings and improved sustainability in various applications.

Questions about the technology: 1. How does the process of circulating the liquid melt through the reactors improve the production of chlorine? 2. What are the specific advantages of using copper ions in the process of chlorine production?

Original Abstract Submitted

The invention relates to a process for preparation of chlorine from hydrogen chloride comprising circulating a liquid melt comprising copper ions Cu with 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:Cu in 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.