Method for Removing SOx from Gas Using Ethylene Glycol Composite Solution

摘要

A method for removing SOx from a gas using an ethylene glycol composite solution is provided. The ethylene glycol composite solution is made by mixing ethylene glycol and/or polyethylene glycol with an organic acid and/or organic acid salt containing no nitrogen atom in a molecule, the ethylene glycol composite solution is brought into contact with the gas containing SOx to absorb the SOx in the gas, wherein x=2 and/or 3. The ethylene glycol composite solution with absorbed SOx is regenerated by one or more of a heating method, a vacuum method, a gas stripping method, an ultrasonication method, a microwave method, and a radiation method to release by-products of sulfur dioxide and sulfur trioxide, and the regenerated ethylene glycol composite solution is recycled for use. This method can be used for desulfurization of flue gas, burning gas, coke-oven gas, synthesis waste gas from dyestuff plants, sewage gas from chemical fiber plants, and other industrial raw material gases or waste gases containing SOx.

主权项

1. A method for removing SOx from a gas, which comprises: mixing ethylene glycol and/or polyethylene glycol with an organic acid containing no nitrogen atom in a molecule and/or an organic acid salt containing no nitrogen atom in a molecule to form an ethylene glycol composite solution, bringing the ethylene glycol composite solution into contact with the gas containing SOx to absorb the SOx in the gas, wherein x=2 and/or 3.