Process for removal of sulfur dioxide and ammonia from a vent gas stream
AssigneeThioSolv, LLC
InventorsMichael F. Ray, Ronald Shafer
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Abstract
According to an embodiment of the invention, a process for substantially completely removing sulfur dioxide and ammonia from a gas stream is disclosed. The process involves lowering the vapor pressure in a scrubber by contacting the gas stream with one or more streams of re-circulating chilled media. The process further involves adjusting the pH of the process solution in the scrubber to within a predetermined range. The lowering of the vapor pressure and pH adjustment results in an increase in the solubility of sulfur dioxide and ammonia in the process solution thereby facilitating a substantially complete removal of sulfur dioxide and ammonia from the gas stream.
Claims15
A process for removing sulfur dioxide and ammonia from a gas stream in a scrubber comprising:
- establishing a temperature gradient in the scrubber to lower vapor pressure of the gas stream;
- and
- adjusting pH of a process solution in the scrubber to within a predetermined range.
Dependencies are inferred from the claim text.