西南石油大学学报(自然科学版) ›› 2009, Vol. 31 ›› Issue (2): 109-112.DOI: 10.3863/j.issn.1674-5086.2009.02.028

• 油气化学工程与化工 • Previous Articles     Next Articles

A NEW AND LOW-COST COMPLEX INHIBITOR FOR NATURAL GAS HYDRATE

TANG Cui-ping1a,1b,2 LI Qing-ping3 DU Jian-wei1a,2 FAN Shuan-shi4 LIANG De-qing1a   

  1. 1.Chinese Academy of Science：a.Guangzhou Institute of Energy Conversion，b.Key Laboratory of Renewable Energy and Gas Hydrate，Guangzhou Guangdong 510640，China；2.Graduate School，Chinese Academy of Sciences，Beijing 100039，China；3.ChinaOffshore Oil Research Center，Beijing 100027，China；4.School of Chemistry and Chemical Engineering，South China University of Technology，Guangzhou Guangdong 510641，China
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-04-20 Published:2009-04-20

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Abstract: A new low dosage hydrate inhibitor GHI is proposed，which is composed of polyvinlypyrrolidone(PVDK90) and ethylene glycol monophenyl ether with a 1∶1 ratio.Through changes of temperature and pressure，the inhibition of GHI is investigated and compared with polyvinlypyrrolidone and commercial inhibitors Inhibex100，Inhibex501 at 4℃ and 8.5～9.0MPa in a 1.027 liter reactor.The commercial price is also compared.The results show 0.5% GHI can inhibit gas hydrate agglomeration for more than 2400min，under the same condition，the inhibition time for Inhibex100，Inhibex501 and PVDK90 are 1000min，1800min and 600min respectively.The commercial price of the GHI is 22.5 percent lower than that of Inhibex501 and 34.7 percent lower than Inhibex100.

Key words: natural gas hydrate, low dosage hydrate inhibitors, kinetic inhibitors, inhibiting performance, economic

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