Beijing Boyuan Hengsheng High-technology Co., Ltd.

Peking University

Yongfeng Boyuan Industry Co., Ltd., Jiangxi Province

Yongfeng Boyuan Industry Co. Ltd.

Chun Hu

Xionghui Wei

Meihua Zou

Li Long Chen

Lifang Li

Xiangbin Li

Ming Wang

Yong Sun

Jiaxu Liu

Daolong Gao

Shaoyang Sun

Jianbai Xiao

Mingjin Wan

Jinfei Wang

Chuan Zou

Pengyan Zhang

Jianbin Zhang

Fang Han

Li Chen

Jun Wang

A method and device for waste gas dedusting and a dedusting agent used in the method. A dust-containing waste gas () and an organic dedusting agent () are introduced into a dedusting tower (), respectively, and make contact with each other in the tower; at least part of the water vapor in the dust-containing waste gas () is condensed, and the organic dedusting agent () and the condensed water adsorb solid particles, acidic pollutants, organic pollutants and/or heavy metal compounds in the dust-containing waste gas; and the resulting purified gas () is emptied out or subjected to a subsequent process. The organic dedusting agent () comprises a non-toxic and high boiling point organic solvent composition, being two or more selected from cooking oil, silicone oil, modified silicone oil, liquid-state asphalt oil, tung tree seed oil, liquid-state paraffin wax oil, mineral oil, palm oil and waste cooking oil.

Method for waste gas dedusting and dedusting agent

A method for removing SOfrom a gas by using a polyol composite solution is provided. The polyol composite solution is made by mixing a polyol with an organic acid and/or organic acid salt, the polyol composite solution is brought into contact with the gas containing SOto absorb the SOin the gas, wherein x=2 and/or 3, and the polyol refers to an organic compound other than ethylene glycol and polyethylene glycol, which contains simultaneously two or more than two hydroxyl groups in a same organic molecule.

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A method for removing SOfrom a gas by using a compound alcohol-amine solution is provided. The compound alcohol-amine solution is made by mixing ethylene glycol and/or polyethylene glycol with hydroxyl and/or carboxyl organic compound having basic group containing nitrogen. The compound alcohol-amine solution is contacted with the gas containing SOto absorb the SOin the gas, wherein x=2 and/or 3. The compound alcohol-amine solution with absorbed SOis regenerated by one or more of heating method, vacuum method, gas stripping method, ultrasonic method, microwave method, and radiation method to release by-products of sulfur dioxide and sulfur trioxide, and the regenerated compound alcohol-amine solution is recycled for use. This method can be used for removing SOfrom 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 SO.

An ethylene glycol composite solution is used for removing SOfrom a gas. 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 SOto absorb the SOin the gas. The ethylene glycol composite solution loaded with absorbed SOis regenerated by heating, vacuuming, gas stripping, ultrasonic treatment, microwave treatment, or radiation treatment to release by-products of sulfur dioxide and sulfur trioxide, and the regenerated ethylene glycol composite solution is recycled for use.

A method for removing SOfrom a gas by using a modified polyethylene glycol solution to absorb the SOin the gas. The modified polyethylene glycol solution is contacted with the gas containing SOto absorb the SOin the gas, wherein x=2 and/or 3, the modified polyethylene glycol is a product derived from etherifying hydroxyl groups in the molecules of ethylene glycol and/or polyethylene glycol and has a general formula: R&#x2014;(O&#x2014;CH)&#x2014;O&#x2014;R, where n is a positive integer, Rand Rare the same or different and are each independently alkyl, alkenyl, alkynyl, acyl or aryl.

Method for removing SOx from gas with modified polyethylene glycol

A method for removing SO(x=2 and/or 3) from gas using a solution having polyethylene glycol as the main ingredient. First, SOin the gas is absorbed by the solution of polyethylene glycol. Second, the solution of polyethylene glycol which has absorbed SOis regenerated by one or more of the heating, vacuum, ultrasonic, microwave or radiation methods, thereby releasing the by-products of sulfur dioxide and sulfur trioxide. The regenerated solution of polyethylene glycol is recycled. When the water content of the regenerated solution of polyethylene glycol is high enough to affect the desulfurization, it needs to be removed. Removal methods include heating and rectification, absorption using a water absorbent, or a combination of these methods. The polyethylene glycol solution is recycled after dehydration.

Method for removing SOx from gas using polyethylene glycol

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Beijing, China

Chun Hu