Conversion of Metal Carbonate to Metal Chloride

Patent metadata

Field	Value
Publication number	US-2017050859-A1
Application number	US-201515118966-A
Country	US
Kind code	A1
Filing date	Feb 9, 2015
Priority date	Feb 13, 2014
Publication date	Feb 23, 2017
Grant date	—

Abstract

A process for preparing metal chloride Mx+Clx−, in which metal carbonate in solid form is reacted with a chlorinating agent selected from chlorine and oxalyl chloride to give metal chloride Mx+Clx−, where the metal M is selected from the group of the alkali metals, alkaline earth metals, Al and Zn, Li and Mg, or Li, and x corresponds to the valency of the metal cation, and wherein metal M is additionally added as a reactant to the metal carbonate/chlorinating agent reaction.

First claim

What is claimed is:

1 . A method for producing metal chloride M x+ Cl x − , comprising:
providing a chlorinating agent, reacting metal carbonate as a solid with the chlorinating agent to form metal chloride M x+ Cl x − , wherein metal M being selected from the group of metals consisting of the alkali metals, alkaline earth metals, Al and Zn, Li and Mg, and Li, and wherein x corresponds to the valence of the metal cation, and additionally adding metal M as a reactant to the reaction of metal carbonate with the chlorinating agent.

2 . The method of claim 1 , wherein the metal M added as a reactant with a metal/metal carbonate weight ratio of less than 5/10 in order to generate thermal energy.

3 . The method of claim 2 , wherein the metal M is used together with the metal carbonate for the reaction with the chlorinating agent.

4 . The method of claim 1 , wherein the chlorinating agent comprises chlorine or oxalyl chloride.

5 . The method of claim 1 , wherein the metal chloride is subsequently reacted to produce metal M.

6 . The method of claim 5 , wherein the metal M produced by the subsequent reaction of the metal chloride is reacted at least partly with carbon dioxide to produce metal carbonate, to form a metal circuit.

7 . The method of claim 1 , wherein the reaction occurs in a grid reactor or a mechanically moved fixed-bed reactor or in a cyclone reactor.

8 . The method of claim 7 , wherein the reaction occurs in a grid reactor, in which the chlorinating agent is added as a gas in cocurrent with the metal carbonate.

9 . The method of claim 7 , wherein the reaction occurs in a cyclone reactor, which is heated, and in which metal M is introduced at different positions in the reaction region.

10 . An apparatus for reacting metal carbonate as solid with a chlorinating agent to produce metal chloride M x+ Cl x − , wherein the metal M is selected from the group of metals consisting of the alkali metals, alkaline earth metals, Al and Zn, Li and Mg, and Li, and x corresponds to the valence of the metal cation, and wherein metal M is additionally added as a reactant to the reaction of metal carbonate with the chlorinating agent, the apparatus comprising:
a first reactor for the reaction of metal carbonate and the chlorinating agent; a first supply structure configured to introduce metal carbonate as solid into the first reactor; a second supply structure configured to introduce the chlorinating agent into the first reactor; a first discharge structure configured to remove metal chloride from the first reactor; a second discharge structure configured to remove gaseous products of the reaction of metal carbonate and the chlorinating agent from the first reactor; and a third supply structure configured to introduce metal M into the first reactor.

11 . The apparatus of claim 10 , wherein the first reactor for the reaction of metal carbonate and the chlorinating agent is a grid reactor or a mechanically moved fixed-bed reactor or a cyclone reactor.

12 . The apparatus of claim 10 , wherein the supply of metal M and metal carbonate into the first reactor occurs via a common opening in the first reactor.

13 . The apparatus of claim 10 , further comprising an electrolysis structure configured to electrolyze metal chloride to give metal M and chlorine;
a fourth supply structure connected to the first discharge structure and configured to supply the metal chloride to the electrolysis structure; a third discharge structure configured to remove metal M from the electrolysis structure; and a fourth discharge structure configured to remove chlorine from the electrolysis structure.

14 . The apparatus of claim 10 , further comprising
a second reactor configured to react metal M with carbon dioxide to produce metal carbonate; a fifth supply structure configured to supply metal M to a second reactor; a sixth supply structure configured to supply carbon dioxide to the second reactor; a fifth discharge structure connected to the first supply structure and configured to remove metal carbonate from the second reactor; and at least one sixth discharge structure configured to discharge the products of the reaction of metal M and carbon dioxide from the second reactor.

15 . The apparatus of claim 10 , further comprising an electrolysis structure configured to electrolyze metal chloride to give metal M and chlorine;
a fourth supply structure connected to the first discharge structure and configured to supply the metal chloride to the electrolysis structure; a third discharge structure configured to remove metal M from the electrolysis structure; a fourth discharge structure configured to remove chlorine from the electrolysis structure; a second reactor configured to react metal M with carbon dioxide to product metal carbonate; a fifth supply structure configured to supply metal M to the second reactor; a sixth supply structure configured to supply carbon dioxide to the second reactor; a fifth discharge structure connected to the first supply structure and configured to remove metal carbonate from the second reactor; and at least one sixth discharge structure configured to discharge the products of the reaction of metal M and carbon dioxide from the second reactor; wherein the third discharge structure is connected to the fifth supply structure.

16 . The apparatus of claim 15 , wherein the third discharge structure is additionally connected to the third supply structure.

17 . The method of claim 1 , wherein the metal M has a metal/metal carbonate weight ratio of less than 1/10 in order to generate thermal energy.

18 . The method of claim 1 , wherein the metal M has a metal/metal carbonate weight ratio of less than 0.5/10 in order to generate thermal energy.

Assignees

• Siemens Ag

Inventors

• Eckert Helmut
• Fischer Peter Heinz
• Kellermann Renate Elena
• Scherer Viktor
• Schiemann Martin
• Schmid Guenter
• Taroata Dan

Classifications

• C01F7/56

  Chlorides (containing fluorine C01F7/52) · CPC title

• C01D3/04

  Chlorides · CPC title

• B01J2219/0803

  employing electric or magnetic energy · CPC title

• C25C1/00

  Electrolytic production, recovery or refining of metals by electrolysis of solutions (C25C5/00 takes precedence) · CPC title

• C25B9/00

  Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features · CPC title