Invention Grant
US09051524B2 Method for refining polyoxymethylene dialkyl ethers by catalytic hydrogenation using a fixed bed
有权
通过使用固定床的催化氢化来精制聚甲醛二烷基醚的方法
- Patent Title: Method for refining polyoxymethylene dialkyl ethers by catalytic hydrogenation using a fixed bed
- Patent Title (中): 通过使用固定床的催化氢化来精制聚甲醛二烷基醚的方法
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Application No.: US14257712Application Date: 2014-04-21
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Publication No.: US09051524B2Publication Date: 2015-06-09
- Inventor: Hongyan Shang , Zhengpeng Hong , Yu Han
- Applicant: Dongfang Hongsheng New Energy Application Technology Research Institute Co., Ltd.
- Applicant Address: CN Beijing
- Assignee: DONGFANG HONGSHENG NEW ENERGY APPLICATION TECHNOLOGY RESEARCH INSTITUTE CO., LTD.
- Current Assignee: DONGFANG HONGSHENG NEW ENERGY APPLICATION TECHNOLOGY RESEARCH INSTITUTE CO., LTD.
- Current Assignee Address: CN Beijing
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: CN201310231273 20130609
- Main IPC: C10L1/02
- IPC: C10L1/02 ; C08G2/12 ; C07C41/58
Abstract:
The present invention relates to a method for refining polyoxymethylene dialkyl ethers by catalytic hydrogenation using a fixed bed, wherein, using a fixed bed reactor for refining by hydrogenation, an equilibrium system containing polyoxymethylene dialkyl ethers products is refined by catalytic hydrogenation, so as to remove formaldehyde contained therein. The refining method by hydrogenation described in the present invention can remarkably increase the separation and purification efficiency of polyoxymethylene dialkyl ether products with various polymerization degree, and the polyoxymethylene dialkyl ethers obtained after subsequent rectification have a purity greater than 99.5%, a product yield greater than 97% and an atom utilization ratio close to 100%.
Public/Granted literature
- US20140364653A1 METHOD FOR REFINING POLYOXYMETHYLENE DIALKYL ETHERS BY CATALYTIC HYDROGENATION USING A FIXED BED Public/Granted day:2014-12-11
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