含蠟原油管輸過程化學(xué)組成與應(yīng)用研究進(jìn)展①

甘亦凡 成慶林 孫 巍 蘇文坤 劉 揚(yáng)

(東北石油大學(xué)提高油氣采收率教育部重點(diǎn)實(shí)驗(yàn)室)

甘亦凡 成慶林 孫 巍 蘇文坤 劉 揚(yáng)

(東北石油大學(xué)提高油氣采收率教育部重點(diǎn)實(shí)驗(yàn)室)

1 化學(xué)基準(zhǔn)物選取

2 含蠟原油管輸過程化學(xué)反應(yīng)

(1)

(2)

圖1 各油田原油化學(xué)反應(yīng)計(jì)算結(jié)果對比

3 含蠟原油管輸過程化學(xué)擴(kuò)散

(3)

(4)

在計(jì)算含蠟原油活度系數(shù)時(shí)，可采用較為精確的正規(guī)溶液理論模型，即：

(5)

其中，Vi為組分摩爾體積，δi為組分溶解度參數(shù)，T為溶液溫度，溶解度參數(shù)δm=∑δiφi，φi=xiVi(∑xiVi)-1。因此，只要計(jì)算出組分i的溶解度參數(shù)和摩爾體積就可以得到活度系數(shù)。對于溶解度參數(shù)，Riazi M R和Al-Sahhaf T A提出了一個(gè)正構(gòu)烷烴液相溶解度參數(shù)的關(guān)系式[38]，Leelavanichkul P等建立了一個(gè)異構(gòu)環(huán)烷烴、芳香烴和組分i固相溶解度參數(shù)的表達(dá)式[39]。對于組分i的液相摩爾體積，可以由ViL=Mi/di25和Leelavanichkul P等建立的各碳?xì)浠衔镆合嗝芏惹蟮谩τ诮M分i的固相摩爾體積，當(dāng)體系中組分碳數(shù)不小于7時(shí)，可從相關(guān)化工手冊查詢，當(dāng)碳數(shù)大于7時(shí)，可由經(jīng)驗(yàn)公式計(jì)算。

4 含蠟原油管輸過程化學(xué)傳遞

5 結(jié)束語

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ResearchProgressintheChemicalExergyCompositionandApplicationinWaxyCrudeOilPipelineTransportationProcess

GAN Yi-fan,CHENG Qing-lin,SUN Wei,SU Wen-kun,LIU Yang

(MOEKeyLaboraryforEnhancingOilandGasRecoveryRatio,NortheastPetroleumUniversity)

The theoretical achievements and development status of chemical exergy reference environment’s selection,chemical reaction exergy,chemical diffusion exergy and chemical exergy transfer at home and abroad were reviewed;through considering the actual application of chemical exergy analysis and chemical exergy transfer in engineering,the main problems existed in this field were indicated.

waxy crude oil pipeline transportation process,reaction exergy,diffusion exergy,chemical exergy transfer

國家自然科學(xué)基金項(xiàng)目(51534004)；黑龍江省普通高校科技創(chuàng)新團(tuán)隊(duì)基金項(xiàng)目(2009td08)

甘亦凡(1992-)，博士研究生，從事熱力學(xué)分析與油氣儲(chǔ)運(yùn)系統(tǒng)綜合節(jié)能的研究，2905818298@qq.com。

TQ051.21

A

0254-6094(2017)04-0375-07

2017-01-19)