US 2013/0255496 A1Published application

Ionic Liquid Solvent and Gas Purification Method Using the Same

AssigneeInstitute of Process Engineering, Chinese Academy

InventorsXiangping Zhang, Yansong Zhao, Shaojuan Zeng, Suojiang Zhang, Haifeng Dong, Yingpeng Zhen, Lei Huang

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Abstract

An ionic liquid solvent and gas purification method using the same are provided. The ionic liquid solvent consists of a main absorbent, a regulator for the main absorbent, an auxiliary absorbent, an activator, an antioxidant and water. The ionic liquid involves a low synthetic cost, low viscosity and high absorption capacity, and can be easily regenerated and recycled. The method, compared with traditional processes, has advantages such as a greater absorption capability and lower operation cost.

Claims17

Dependent claims

An ionic liquid solvent for gas purification and separation, consisting of a main absorbent, a regulator for the main absorbent, an auxiliary absorbent, an activator, an antioxidant and water, wherein based on the total weight of the ionic liquid solvent, the ionic liquid solvent comprises 2-95 wt % of alkylolamine functionalized ionic liquid as the main absorbent;

0-30 wt % of heterocyclic ionic liquid or amino acid ionic liquid as the regulator for the main absorbent;
0.1-30 wt % of alkylolamine organic solvent as the auxiliary absorbent;
0-5 wt % of activator;
0.1-1 wt % of antioxidant and 0.1-50 wt % of water.

1 more element

Dependencies are inferred from the claim text.