发明授权
US07749475B2 Method for separation and recycle of pure sulfur dioxide from a gaseous mixture in is cycle with ionic liquids
失效
从气体混合物中分离和再循环纯二氧化硫的方法是用离子液体循环
- 专利标题： Method for separation and recycle of pure sulfur dioxide from a gaseous mixture in is cycle with ionic liquids
- 专利标题（中）： 从气体混合物中分离和再循环纯二氧化硫的方法是用离子液体循环
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申请号： US12375812申请日： 2007-12-21
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公开(公告)号： US07749475B2公开(公告)日： 2010-07-06
- 发明人: Chang Soo Kim , Gyeong Taek Gong , Kye Sang Yoo , Byung Gwon Lee , Kwang Deog Jung , Hong Gon Kim , Byoung Sung Ahn , Oh Shim Joo
- 申请人： Chang Soo Kim , Gyeong Taek Gong , Kye Sang Yoo , Byung Gwon Lee , Kwang Deog Jung , Hong Gon Kim , Byoung Sung Ahn , Oh Shim Joo
- 申请人地址： KR Seongbuk-gu
- 专利权人： Korea Institute of Science and Technology
- 当前专利权人： Korea Institute of Science and Technology
- 当前专利权人地址： KR Seongbuk-gu
- 代理机构： Frommer Lawrence & Haug LLP
- 代理商 Ronald R. Santucci
- 优先权： KR10-2007-0034777 20070409
- 国际申请： PCT/KR2007/006732 WO 20071221
- 国际公布： WO2008/123651 WO 20081016
- 主分类号： C01B17/48
- IPC分类号： C01B17/48 ; C01B17/56
摘要：
The present invention relates to a method for separation and recycling of pure sulfur dioxide from a gaseous mixture in the IS cycle. More specifically, the present invention relates to a method for separation and recycling of pure sulfur dioxide from a gaseous mixture in the IS cycle using an ionic liquid under a specific condition. When compared with the conventional amine-based absorbent, the use of the ionic liquid enables continuous absorption and stripping of SO2 even at high temperature, and enables a reversible absorption of SO2 without loss, decomposition or degradation of a solvent due to good chemical stability, thereby enabling separation and recycling of pure SO2 from a gaseous mixture in the IS cycle.
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