Manufacture of hydrogen chloride from salt and sulfuric acid
OwnerJohn E. Staufferinventor
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Abstract
The specification discloses a continuous process for producing hydrogen chloride whereby sulfuric acid and an alkali metal chloride are fed to a direct fired reaction chamber in a molar ratio of approximately one to one, products comprising hydrogen chloride and the corresponding alkali metal sulfate are withdrawn, and the hydrogen chloride is separated from combustion gases. The reaction chamber provides for the counter flow of gaseous and solid streams within the reaction chamber, such that a chloride-free sulfate is obtained.
Claims3
A continuous process for the production of hydrogen chloride whereby sulfuric acid and an alkali metal chloride in a molar ratio of approximately one to one are fed to a direct fired reaction chamber, products comprising hydrogen chloride and the corresponding alkali metal sulfate are withdrawn, and the hydrogen chloride is separated from combustion gases, said reaction chamber being one that provides for the counter flow of gaseous and solid streams within the reaction chamber, such that a chloride-free sulfate is obtained, wherein said process is characterized by the following chemical reactions:
- 2H2SO4+2NaCl→2NaHSO4+2HCl 2NaHSO4→Na2S2O7+H2O Na2S2O7→Na2SO4+SO3 H2O+SO3→H2SO4.
Dependencies are inferred from the claim text.