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| Preparation of a novel pour point depressant for diesel and its freeze-point effect |
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SHANG Hong-yan1,ZHANG Yao-heng2,XU Ming1,SHAO Peng-cheng2,ZHANG Lin2,XU Bin2
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(1. College of Chemistry and Chemical Engineering in China University of Petroleum，Dongying 257061，Shandong Province，China ;2. Research. Institute of Lanzhou Petroleum Processing Company, Sinopec , Lanzhou 730060, Gansu Province, China )
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| Abstract: |
| A kind of pour point depressant (PPD)3,6-0-1,2,3 > 6-tetrahydrobenzo-l, 2-anhydride ester and/or amide was synthesized via Diels-Alder reaction using maleic anhydride and furan as reactants. The determinant of acid value shows that the rate of production exceeds 90% . The measured cold flow plugging point of Daqing diesel indicates that the depressant belongs to paraffin-based oil having very low sensitivity to ethylene-vinyl acetate copolymer( EVA) series PPD additives. The novel additive component combined with polymethacrylate asters (PAE) can reduce the cold flow plugging point of Daqing diesel by 7 C , and shows gcxxi synergy. |
| Key words: diesel cold flow plugging point pour point depressant sensitivity |
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