20-10-2016 дата публикации
Номер: US20160305612A1
Принадлежит:
The present invention provides a perfluorophosphate-based drag-reducing agent for gas pipelines. Raw materials for the perfluorophosphate-based drag-reducing agent for gas pipelines consist of fatty acid(s), pyridine(s), fluorophosphates(s) and haloalkane(s) in a mass ratio of 2:1:1:1 to 2:3:1:2. A method for preparing the perfluorophosphate-based drag-reducing agent for gas pipelines is also provided. The perfluorophosphate-based drag-reducing agent for gas pipelines is non-toxic and environmentally friendly, has a high drag reduction percentage, a long-lasting effect, good stability and solubility, does not affect the inner surface and coatings of natural gas pipelines or gas quality, and is suitable for on-line atomization and injection. 1. A perfluorophosphate-based drag-reducing agent for gas pipelines , the raw materials for the drag-reducing agent consisting of fatty acid(s) , pyridine(s) , fluorophosphates(s) and haloalkane(s) in a mass ratio of 2:1:1:1 to 2:3:1:2.2. The perfluorophosphate-based drag-reducing agent for gas pipelines according to claim 1 , wherein the fatty acid(s) is selected from the group consisting of palmitic acid claim 1 , oleic acid claim 1 , lauric acid claim 1 , linoleic acid claim 1 , stearic acid claim 1 , linolenic acid claim 1 , myristic acid claim 1 , arachidic acid claim 1 , cerotic acid claim 1 , and lignoceric acid.3. The perfluorophosphate-based drag-reducing agent for gas pipelines according to claim 1 , wherein the pyridine(s) is selected from the group consisting of pyridine claim 1 , 2-chloro-pyridine claim 1 , 2-mercapto-pyridine claim 1 , 2 claim 1 ,6-dibromo-pyridine claim 1 , N-ethylpyridine claim 1 , 2 claim 1 ,3-dichloro-pyridine claim 1 , 3 claim 1 ,5-dibromo-pyridine claim 1 , N-methylpyridine claim 1 , 2-vinylpyridine claim 1 , 2 claim 1 ,5-dibromo-pyridine claim 1 , and 2 claim 1 ,6-dichloro-pyridine.4. The perfluorophosphate-based drag-reducing agent for gas pipelines according to claim 1 , wherein the ...
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