| abstract |
The present invention provides a method for removing SOx in a gas with an ethylene glycol-based mixed solution. The ethylene glycol-based composite solution is obtained by mixing ethylene glycol and / or polyethylene glycol with an organic acid and / or an organic acid salt that does not contain a nitrogen atom in the molecule, and the ethylene glycol-based composite solution is contacted with a gas containing SOx Absorbing SOx in the gas, where x = 2 and / or 3. The ethylene glycol-based composite solution absorbing SOx is regenerated by at least one of the heating method, the vacuum method, the gas stripping method, the ultrasonic treatment method, the microwave method, and the irradiation method to emit sulfur dioxide and by-products of sulfur trioxide, The glycol-based composite solution is reused. The process may be used for desulfurization of flue gas, incineration gas, coke oven gas, synthetic waste gas from dye plants, waste water from chemical fiber factories, and other industrial feedstocks containing SOx or waste gas. |