混合劣质柴油加氢改质试验研究

以镇海纯催化裂化柴油和催化裂化柴油混兑焦化柴油、加氢处理柴油、渣油加氢柴油以及直馏柴油为原料进行加氢改质试验,考察了不同种类混合劣质柴油对加氢改质产物分布及产品质量的影响。结果表明:在催化裂化柴油中混兑焦化柴油、加氢处理柴油、渣油加氢柴油以及直馏柴油进行加氢改质,可以有效降低精制段所需温度和装置氢耗,优化产物分布以及提高产品质量。在催化裂化柴油中混兑直馏柴油进行加氢改质,得到的重石脑油产品收率为34.8%,芳烃潜含量为65.88%,改质柴油产品收率为56.9%,柴油十六烷指数达到55以上。在实际生产中催化裂化柴油混兑直馏柴油进行加氢改质可有效提高装置经济效益。     

减二线蜡油加氢改质生产白油的研究

以减二线蜡油为原料,采用润滑油加氢改质工艺、加氢改质生成油实沸点蒸馏切割成窄馏分、加氢改质大于360℃馏分溶剂脱蜡等流程进行生产轻质白油试验,探讨生产轻质白油系列产品的可行性。试验结果表明:随着加氢改质反应温度的提高,加氢生成油中轻质馏分的收率增加、重质馏分的收率减少,用做3#白油料的加氢改质生成油160~320℃馏分段收率明显增加,加氢改质生成油切割的相同馏分段窄馏分密度和黏度相应降低,加氢改质生成油切割大于360℃馏分溶剂脱蜡试验得到脱蜡油的收率减少、密度和黏度降低。     

催化裂化劣质柴油改质技术

对我国和美国催化裂化柴油的质量进行了比较。分析了采用碱精制、加氢精制、中压加氢改质和溶剂精制等技术对催化裂化劣质柴油改质的利弊及其效果。重点讨论了中压加氢改质工艺中柴油方案、多产化工原料方案和生产化工原料兼产航煤方案。最后指出中压加氢改质和加氢裂化是催化裂化劣质柴油改质的较理想工艺。     

加氢工艺处理煤液化加氢稳定油的研究

加氢精制与加氢改质都是煤液化加氢稳定油高附加值利用的有效途径。实验结果表明,两种工艺在产物分布、化学氢耗与装置液体收率以及产品质量等方面存在明显差异。与加氢精制工艺相比,加氢改质工艺得到的高附加值产品(重石脑油+喷气燃料)收率高、喷气燃料与柴油产品品质更佳、重石脑油芳烃潜含量相对较低,但仍为优质的重整原料;在反应温度360℃/380℃、体系压力16.0 MPa、体积空速0.69 h~(-1)、氢油体积比800∶1的反应条件下重石脑油与喷气燃料总收率为42.5%,重石脑油芳烃潜含量为76.11%,喷气燃料烟点为26 mm、改质柴油十六烷值提升到49,表明加氢改质为更优的煤液化加氢稳定油处理工艺。     

高选择性加氢改质系列技术及应用

介绍了高选择性加氢改质系列技术及其工业应用情况.中压加氢改质(MHUG)技术具有原料适应性好,产品方案灵活,柴油十六烷值可提高15～ 20个单位,可由劣质原料生产清洁柴油.分区进料灵活加氢改质(MHUG -Ⅱ)技术提高了加氢改质选择性,降低了氢耗,增加了柴油收率.采用多产重整料加氢改质( MHUG -N)技术可以生产优质重整原料,同时进一步提高柴油质量.     

减黏汽油中氯的来源及控制措施

对中国石油天然气股份有限公司辽河石化分公司减黏汽油中氯的来源、存在形态及对加氢改质装置的危害进行了分析。结果表明,减黏汽油氯含量高是造成加氢改质装置换热器胺盐结晶的主要原因。通过裂解减黏闪蒸塔顶油和将减黏闪蒸塔顶油从减黏汽油中分离等两种方法,均可降低减黏汽油的氯含量,使其符合加氢改质原料的要求。目前主要是采用将减黏闪蒸塔顶油从减黏汽油中分离的方法来降低氯含量,以减轻对加氢改质装置造成的不良影响。     

节能降耗的柴油灵活加氢改质(MHUG-Ⅱ)技术

中国石化石油化工科学研究院开发的节能降耗的柴油灵活加氢改质MHUG-Ⅱ工艺,基于加氢精制和加氢改质过程化学的不同特点及加氢改质技术对不同原料的适应性,设置了分区进料、设备集成的新型加氢工艺流程.与常规加氢改质相比,MHUG-Ⅱ工艺氢耗降低10％以上,柴油收率提高6百分点以上,循环氢量降低50％以上,可生产国Ⅵ标准的清洁...     

渣油加氢柴油的加氢技术路线工艺研究

以加氢精制、加氢改质以及混兑催化裂化柴油(LCO)加氢改质3种加氢技术路线加工渣油加氢柴油,考察了反应温度、系统压力以及体积空速对产物分布和产品质量的影响。结果表明:加氢精制路线所得精制柴油十六烷指数仅提升2.25单位,技术竞争力较差;加氢改质温度为375℃时可得到42%的重石脑油,其芳烃潜含量为54%,是优质的重整原料,同时柴油产品质量提升明显,满足国VI柴油标准;渣油加氢柴油混兑LCO加氢改质所需温度低、处理量大,是高附加值利用LCO及渣油加氢柴油的加氢技术路线。     

最新专利文摘

<正>一种重质柴油的改质方法该专利涉及一种重质柴油的改质方法。该方法将沸程为220~400℃的重质柴油进行加氢精制和加氢改质处理,将处理所得的液体产物进行分馏,将沸点大于180℃的馏分进行芳烃抽提,抽余油排出系统,抽出油重新进行加氢改质处理或加氢精制和加氢改质处理,所述芳烃抽提溶剂选自有机胺化合物或醚化合物。(中国石油化工股份有限     

催化柴油加氢改质技术研究进展

介绍了国内外催化柴油加氢改质技术的研究现状及进展,并对柴油加氢改质技术的发展方向进行了展望。     

Hydrocracking of Gudao Residual Oil with Dispersed Catalysts Using Supercritical Water-Syngas as a Hydrogen Source

Heavy oil upgrading is a very important process in the petroleum industry, but is very difficult because it has a high impurity content. A variety of heavy oil upgrading technologies have been developed in the world, including the catalytic hydrocracking process, which can process various heavy oils with a high yield of liquid products. Although this technology is one of the most widely used methods for upgrading heavy oil, the use of expensive molecular hydrogen is costly. The heavy oil upgrading technology with alternative hydrogen is very important. The catalytic hydroconversion of Gudao residue with different catalysts using water-syngas as an alternative hydrogen was investigated in this study. Hydrogen is provided in-situ for hydrocracking through the water-gas shift reaction (WGSR). The experimental results show that catalysts play a very important role in catalytic hydroconversion of Gudao residue using water-syngas as an alternative hydrogen. Addition of catalysts to residue was found to improve the distribution or properties of cracking products and inhibit the asphaltene or TI formation.     

Hydrocracking of Gudao Residual Oil with Dispersed Catalysts Using Supercritical Water-Syngas as a Hydrogen Source

Abstract:

Heavy oil upgrading is a very important process in the petroleum industry, but is very difficult because it has a high impurity content. A variety of heavy oil upgrading technologies have been developed in the world, including the catalytic hydrocracking process, which can process various heavy oils with a high yield of liquid products. Although this technology is one of the most widely used methods for upgrading heavy oil, the use of expensive molecular hydrogen is costly. The heavy oil upgrading technology with alternative hydrogen is very important. The catalytic hydroconversion of Gudao residue with different catalysts using water-syngas as an alternative hydrogen was investigated in this study. Hydrogen is provided in-situ for hydrocracking through the water-gas shift reaction (WGSR). The experimental results show that catalysts play a very important role in catalytic hydroconversion of Gudao residue using water-syngas as an alternative hydrogen. Addition of catalysts to residue was found to improve the distribution or properties of cracking products and inhibit the asphaltene or TI formation.     

Hydrocracking of Gudao Residual Oil with Dispersed Catalysts Using Supercritical Water-Syngas as a Hydrogen Source. Part II: The Comparison of Residue Hydrocracking in Different Hydrogen Sources

Different catalytical hydrogen sources were compared with molecular hydrogen gas in the hydrocracking of Gudao residue in the presence of catalysts (PMA). The results showed that alternative hydrogen sources were effective in catalytic hydroconversion of heavy oil. The hydroconversion of residue in supercritical water-syngas system showed similar results when performed with molecular hydrogen.     

Hydrocracking Gudao Residual Oil Using Supercritical Water-Syngas as Hydrogen Source in Suspension Bed. Part III: Water-Gas Shift Reaction

Abstract

The catalytic hydroconversion of Gudao residue in supercritical water-syngas system is a heavy oil upgrading technology. The hydrogen derived from water-gas shift reaction can be used for residue hydrocracking, so, it is important for studying the water-gas shift reaction that takes place in the hydrocracking system. Here, the water-gas shift reaction in the supercritical water-syngas system was investigated. The results showed that the water-gas shift reaction could be effectively increased with dispersed catalysts, and more than 80% CO was conversed in the initial processes.     

Hydrocracking of Gudao Residual Oil with Dispersed Catalysts Using Supercritical Water-Syngas as a Hydrogen Source. Part II: The Comparison of Residue Hydrocracking in Different Hydrogen Sources

Abstract

Different catalytical hydrogen sources were compared with molecular hydrogen gas in the hydrocracking of Gudao residue in the presence of catalysts (PMA). The results showed that alternative hydrogen sources were effective in catalytic hydroconversion of heavy oil. The hydroconversion of residue in supercritical water-syngas system showed similar results when performed with molecular hydrogen.     

催化裂化柴油加工转化过程的经济性分析

立足柴油组分的分子结构，通过分析各类柴油原料和其加氢产品的组成关系，研究柴油组分加氢精制过程中的芳烃饱和反应规律，以及不同加氢深度对催化裂化柴油（简称LCO）回炼时裂化转化结果的影响，从经济性角度探讨LCO的不同加工路线。结果表明：LCO加氢精制生产国Ⅵ标准柴油的过程中，芳烃加氢饱和反应的耗氢量占反应总耗氢量的50%左右；LCO因其密度大、多环芳烃含量高，作为国Ⅵ车用柴油调合组分时需要深度加氢饱和芳烃，因而耗氢成本巨大，经济性极差；LCO选择性加氢-催化裂化组合（LTAG）工艺，LCO的加氢反应深度降低，耗氢成本大幅降低；可利用加氢转化制汽油、加氢转化制芳烃、加氢裂化混合掺炼、渣油加氢和催化裂化组合回炼等技术，实现富含芳烃的LCO资源的高效利用。     

孤岛减渣生产道路沥青的可行性研究

对孤岛减压渣油异丁烷馏分脱沥青及掺兑催化油浆脱沥青的脱油沥青生产道路沥青的可行性进行了研究。结果表明：孤岛减压渣油掺兑催化油浆脱沥青获得的脱油沥青的延度有所改善，在相同的收率下获得的脱沥青油的性质更好。在适宜的条件下，脱油沥青的主要指标满足道路沥青标准。     

高含硫化氢井套管加药处理工艺及效果

孤岛稠油产量占孤岛油田总产量的34.9%,是该油田原油上产的主阵地。随着孤岛稠油热采规模不断扩大,注蒸汽驱井组不断增加,注汽量加大,含硫化氢油井逐渐增多,治理难度大。近四年来采油厂针对孤岛稠油区块开展稠油热采硫化氢产生机理及防治对策研究,在高含硫化氢油井实施套管滴加脱硫剂工艺试验,取得较好效果。     

孤岛VRDS渣油研制重质润滑油基础油制取重质基础油可行性探讨

孤岛减压渣油经加氢裂化后的尾油,化学组成和性质发生了很大变化,接近石蜡基的大庆减压渣油：色谱模拟脱沥青研究表明,在很高的脱沥青油收率下,脱沥青油的残炭值、氮含量仍保持较低水平,脱蜡油性能优越,孤岛ＶＲＤＳ渣油可以作为生产重质润滑油基础油的原料。     

不同馏分及渣油在临氢热改质过程中供氢能力研究

为了考察重油在临氢热改质过程中的供氢能力,将委内瑞拉原油切割为3个馏分及渣油作为油样,蒽作为夺氢探针,分别研究了氢气、油样以及油样临氢体系的供氢能力,采用反应叠加法分析了临氢热改质过程中油样与氢气之间的协同效应,间接考察了油样组成结构对氢分子活化的影响。结果表明：油样中烷烃、环烷烃以及环烷、芳香结构对油样的供氢能力有积极影响;临氢条件下,整个反应体系的供氢能力较油样和氢气单独供氢能力之和提升一倍左右,可见油样与氢气之间存在着积极的协同效应。另外,从油样性质的差异性角度分析,油样组成,如多环芳烃、硫、金属等,对氢分子的活化有着促进作用。