Alkali metal iodide salt solution and method for producing the same

Abstract

A method for producing an alkali metal iodide salt solution including combusting a liquid for combustion so as to combust a combustible component of the liquid for combustion; and subsequently cooling a resultant gas containing a decomposition product. The method includes the steps of (a) providing a liquid containing (i) an alkali metal iodide salt, (ii) an inorganic-salt-forming substance capable of forming, at combustion, an inorganic salt containing an alkali metal and (iii) an organic compound; (b) adding to the liquid a precipitation solvent capable of depositing the inorganic-salt-forming substance; (c) removing from the liquid the inorganic-salt-forming substance precipitated in the step (b) so as to obtain the liquid for combustion; and (d) combusting the liquid for combustion and subsequently cooling the resultant gas containing a decomposition product.

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         9 . An alkali metal iodide salt solution produced through combustion of a liquid for combustion by a method comprising:
 providing the liquid for combustion by removing a compound from a liquid containing (i) the compound, (ii) at least one of iodine and an iodine compound, and (iii) a solvent, the compound (I) being capable of forming, at combustion, an inorganic salt containing an alkali metal;   before removing the compound from the liquid, distilling off the solvent, which is contained in the liquid and dissolves the compound, and   before removing the compound from the liquid, adding a deposition solvent to the liquid for depositing the compound.   
     
     
         10 . An alkali metal iodide salt solution produced by a method including combusting a liquid for combustion so as to combust a combustible component of the liquid for combustion; and subsequently cooling a resultant gas containing a decomposition product, the method comprising:
 (a) providing a liquid containing (i) an alkali metal iodide salt, (ii) an inorganic-salt-forming substance capable of forming, at combustion, an inorganic salt containing an alkali metal and (iii) an organic compound;   (b) adding to the liquid a deposition solvent to deposit the inorganic-salt-forming substance;   (c) removing from the liquid the inorganic-salt-forming substance deposited in the step (b) so as to obtain the liquid for combustion;   (d) combusting the liquid for combustion to form a resultant gas containing a decomposition product and subsequently cooling the resultant gas containing the decomposition product to produce the alkali metal iodide salt solution; and   wherein the organic compound (iii) comprises an organic solvent, and the method further comprises distilling off the organic solvent in the liquid before or after the step (b).