| 摘要 |
In one embodiment, a system for treating a gas stream comprising NOx generated from an acid pickling solution includes a first chamber and a second chamber. The first chamber includes a first inlet communicating with a source of a gas comprising NOx, a second inlet communicating with a source of ozone, and an interior volume adapted to contact the gas comprising NOx introduced through the first inlet with the ozone introduced through the second inlet. The second chamber directly fluidly communicates with the first chamber and receives gaseous effluent comprising nitric acid from the first chamber. The second chamber includes a third inlet communicating with a source of water vapor, an interior volume adapted to contact the gaseous effluent from the first chamber with the water vapor, thereby solubilizing nitric acid in the gaseous effluent with the water vapor to provide a solubilized nitric acid, and an outlet for collecting solubilized nitric acid from the interior volume of the second chamber. |
| 主权项 |
1. A system for treating a gas stream comprising NOx generated from an acid pickling solution, the system comprising:
a first chamber including
a first inlet communicating with a source of a gas comprising NOx generated by an acid pickling solution in an acid pickling tank, acid pickling bath, or acid pickling spray,a second inlet communicating with a source of ozone, andan interior volume adapted to contact the gas comprising NOx introduced through the first inlet with the ozone introduced through the second inlet, thereby producing oxidation products including nitrogen sesquioxide and nitrogen pentoxide, wherein at least a portion of the nitrogen sesquioxide and nitrogen pentoxide react with water in the first chamber to form nitric acid; and a second chamber directly fluidly communicating with the first chamber and receiving gaseous effluent comprising nitric acid from the first chamber, the second chamber including
a third inlet communicating with a source of water vapor,an interior volume adapted to contact the gaseous effluent from the first chamber with the water vapor introduced through the third inlet, thereby solubilizing nitric acid in the gaseous effluent with the water vapor to provide a solubilized nitric acid, andan outlet for collecting solubilized nitric acid from the interior volume of the second chamber, wherein the outlet fluidly communicates with the acid pickling tank, acid pickling bath, or acid pickling spray, whereby at least a portion of the solubilized nitric acid collected through the outlet is delivered to the acid pickling tank, acid pickling bath, or acid pickling spray. |
