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3. The method of removing sulphur dioxide from flue gases containing the same and free oxygen which comprises washing sa...

  • Category: Hardware Supplies
  • Published: 13/08/2014
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    3. The method of removing sulphur dioxide from flue gases containing the same and free oxygen which comprises washing said gases with a solution containing ferric ions and manganese ions,<a href="http://www.sellercrusher.com/solutions/copper-concentrate-machine.html">copper concentrate machine</a> said ions acting as catalysts and as promoters, to increase the quantity of sulphur dioxide removed from said gases into said solution. 4. The method of treating sulphur dioxide bearing gases containing free oxygen to remove sulphur dioxide therefrom which comprises washing said gases with water containing substantially 280 milligrams per liter of manganese ions as a catalyst to form sulphuric acid in said solution by the oxidizing effect of the free oxygen present in said gases.5. The method of removing sulphur dioxide from gases in the presence of free oxygen which comprises washing said gases with an aqueous solution to absorb sulphur dioxide into said solution, said sulphur dioxide being oxidized during said absorption, and maintaining a concentration of not less than 0.14 nor more than 0.42% by weight of ferric ions acting as a catalyst to increase the apparent solubility of sulphur dioxide in said solution.


    6. In a purification system for removing obnoxious constituents from waste gases containing free oxygen discharged from an industrial plant, the method of increasing the quantity of sulphur dioxide removed from said gases which comprises washing said gases with a solution containing from 1.5 to 4 grams per liter of ferric ions only acting as a catalyst to accelerate the dissolution of sulphur dioxide into said solution,<a href="http://www.sellercrusher.com/solutions/quarry-machinery.html">quarry machinery</a> said dissolved sulphur dioxide forming sulphuric acid in said solution, and removing said sulphuric acid from said solution to regenerate the solution.7. The method of removing sulphur dioxide from gases containing the same and free oxygen which comprises washing said gases with an acid solution containing ferric ions and manganese ions acting as catalysts and promoters to produce increased removal of sulphur dioxide from said gases into said solution, said dissolved sulphur dioxide forming sulphuric acid in said solution, and removng said sulphuric acid from said solution.


    8. The method of removing sulphur dioxide from gases containing the same and free oxygen which comprises washing the gases with a solution containing a catalyst comprising from substantially 28 to 280, inclusive, milligrams per liter of manganese ions present in the solution to increase the quantity of sulphur dioxide dissolved in said solution.


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