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超稠油改质降黏分子模拟及机理 总被引:1,自引:0,他引:1
为了研究微乳液纳米镍对特超稠油的改质降黏效果,利用分离改质降黏前、后的特超稠油,对反应前、后稠油重质组分沥青质及胶质的平均分子量、元素及核磁共振进行测定,结合化学分子模拟软件Hyperchem对特超稠油改质降黏进行了分子模拟及机理研究。模拟实验结果表明:特超稠油经过改质降黏反应后,其黏度大幅度下降,氢/碳原子比升高;沥青质与胶质分子的尺寸明显减小,沥青质分子量降低幅度较大;改质降黏剂能与特超稠油重质组分稠环芳烃盘状中心核沥青质接触,并导致其稳定的盘状芳环结构破坏,从而使沥青质分子的聚集状态得以改善,胶质分子稳定沥青质分子的作用增强。 相似文献
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文章研究了改质沥青中油浆蒸馏收率、油浆蒸馏重油搀兑比以及外加剂Z1的掺量三因素的配伍性对油浆改质沥青黏温性能的影响规律.研究结果表明:在油浆蒸馏重油搀兑比为30%、油浆蒸馏馏分油收率是27%,Z1的添加量是0.4%的条件下,油浆改质沥青性能基本满足标准JTG E20-2011中50号要求的情况下,其黏温性能基本符合温拌的要求. 相似文献
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针对重交沥青质量不稳定问题,采用添加剂法沥青生产新工艺,该工艺低投资、无污染、操作灵活和低操作成本,可替代氧化沥青工艺. 相似文献
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浅谈用催化裂化油浆改质沥青工艺 总被引:7,自引:1,他引:6
介绍了催化裂化油浆及其芳烃重馏分分别与脱油沥青、半氧化沥青以及渣油调合,催化裂化油浆与渣油或沥青混合蒸馏及混合溶剂脱沥青改质沥青的工艺。 相似文献
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针对蒸汽吞吐、蒸汽驱的低渗透区超稠油流动阻力大、开采困难等问题,提出低渗透区超稠油原位催化改质降黏技术。采用反应釜法和物模实验法,筛选高效原位改质催化剂,研究催化剂的注入方式,并筛选5种催化剂及其改质条件。研究表明:以有机锌为催化剂,催化剂用量为0.1%、稠油含水率为50%时,超稠油具有较好的改质降黏效果;物模实验法原位催化改质降黏效果优于反应釜法,稠油含水率为50%、催化剂用量为0.1%、反应温度为240 ℃、填砂管回压为8~10 MPa和反应时间为24 h条件下,稠油黏度由145 000 mPa·s降至54 260 mPa·s,降黏率达62.58%;物模实验法改质油的密度和酸值下降,重组分(胶质和沥青质)含量减少10.85%,300、500 ℃前馏分分别提高了6.75%、17.29%。在240 ℃、10 MPa条件下,采用自制生物质基调剖剂封堵优势渗流通道,将催化剂注入低渗填砂管后水驱,改质稠油黏度降至68 450 mPa·s,降黏率达52.79%,流动阻力减少19.74%,采出率达到95.22%,稠油综合采出率由46.94%增至85.13%。该方法为超稠油蒸汽吞吐、蒸汽驱低渗透区域的稠油进行原位催化改质降黏提高采收率提供了借鉴。 相似文献
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中海油气开发利用公司(简称油气利用公司)系中国海洋石油总公司的全资子公司.现已形成"中海油36-1"重交沥青和低含硫型环保燃料油等中下游产品的生产、销售以及石油进出口贸易两大业务板块.油气利用公司控股5家生产重交沥青或燃料油的公司,"中海油36-1"重交沥青已经成长为国产重交沥青的第一品牌,沥青产量占据国产重交沥青30%的份额:生产的燃料油以其低含硫环保型的特点受到市场的青睐,占据国产燃料油10%的份额. 相似文献
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Zhang Shijie 《中国炼油与石油化工》2006,(4)
In order to solve the problems related with processing low-quality Liaohe highly sour crude, the Liaohe Petrochemical Company has explored the possibility in optimizing the processing of highly sour crude by adopting different process schemes depending upon the properties of the highly sour crude. The Liaohe naphthenic-base crude oil with low freezing point is earmarked for manufacture of naphthenic lube oils and heavy traffic paving asphalt, while the extra-heavy Liaohe crude with high acid number is routed directly to delayed coking unit coupled with corresponding corrosion preventing measures, resulting in tackling the problem of equipment corrosion arising from refining of Liaohe highly sour crude to obtain light distillates from Liaohe heavy crude through a short process scheme. 相似文献
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对辽河油田曙光一区高粘原油性质作了分析评价。结果表明,此原油粘度极大,凝点高,初馏点高,无汽油馏分,柴油馏分收率仅为7.19%,此原油不适合作为生产汽、煤、柴油的一般加工工艺的原料。但此原油蜡含量很低,胶质沥青质含量较高,属低硫环烷基原油,是生产重交通道路沥青的优质原料。 相似文献
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针对塔河稠油重质化加剧,其减渣调制90号A级道路沥青产品存在闪点和PI值不能满足JTG F40规范A级道路沥青质量要求的问题,本文采用塔河稠油或塔河常压渣油掺炼焦化蜡油蒸馏工艺,对减渣及其调制道路沥青性能的影响进行了研究。结果表明,掺炼焦化蜡油有助于提高塔河减渣的蒸馏切割温度和改变其四组分分布,焦化蜡油的适宜掺炼比例为15%,此时塔河减渣调制的90号道路沥青闪点由237 ℃提高到258 ℃,PI值由1.33降低到0.57,也兼顾了沥青的高温性能和抗老化性质,满足了A级道路沥青产品质量要求,同时沥青混合料高温和水稳定性能得到改善。 相似文献
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The highly viscous crude oil from Shuguang No.1 zone of Liaohe oifield features high density,high viscosity and low wax content.It contains no gasoline fraction and its diesel oil fraction yiled is only 7.19%,which belongs to the low sulfur naphthenic stocks crude oil.Its heavy fraction is not suited for producing lubricating oil.Its heavy oil,whick contains more resins nd asphaltens and less wax,is not an ideal feedstock for catalytic cracking ,but is the ideal raw material for producing high-grade paving asphalt.Now this highy viscous crude oil is used as fuel oil after being emulsified in Liaohe oilfield,but its viscosity is so hight tha it cannot be atomized uniformly and burned completely,resuting not only in waste of oil resource but also in reduction of economical benefit.To make full use of this oil resource and alleviate the shortfall of high grade paving asphalt in China,various brands of asphal meeting Q/SHR003-1998 and ESSO specifications were developed by blending vaceuum residue of the said oil and a blending compo-net which are rich in aromatics and deficient in wax.The impct of blending component on proerties of blended ashalt has been investigated and road perfomances of these blended asphalts were studied.The labroatory test results show that the blended asphalts have good road performance and antiaging property. 相似文献
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