共查询到18条相似文献,搜索用时 750 毫秒
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络合萃取—碱洗法提高催化裂化柴油的安定性 总被引:24,自引:2,他引:22
用溶剂和微量萃取剂组成的复合溶剂对催化裂化柴油络合萃取,再结合碱洗来改善其安定性。结果表明,催化裂化柴油经处理之后,油中的氮化物及酸性化合物得到了有效脱除,安定性大大提高;柴油收率达97%以上。溶剂可循环使用。 相似文献
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催化裂化柴油含不饱和烃、碱性氮、有机酸等,容易产生胶质和沥青质,柴油氧化安定性差,色度高,影响了柴油出厂的质量标准。由西安嘉宏石化科技有限公司自主研发的炼油厂催化裂化柴油非加氢精稳剂及工艺通过陕西省工业交通办公室组织的成果鉴定。鉴定认为,该技术为改善催化裂化柴油的氧化安定性提供了一条新途径,对于无柴油加氢或加氢能力不足的炼化企业更具实用价值。 相似文献
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介绍了石油大学(北京)开发的重油催化裂化柴油RS剂精制新技术及其工业应用情况,该技术能显著提高重油催化裂化柴油的安定性,精制油安定性达到国家一级品标准,工艺过程简单,加工费用低,已在国内多个炼厂应用。 相似文献
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AN APPROACH TO THE CHANGES OF NON-HYDROCARBONS DURING THE DETERIORATION OF THE STABILITY OF FLUIDIZED CATALYTIC CRACKED DIESEL 总被引:2,自引:0,他引:2
The problem of the instability of Fluidized Catalytic Cracked (FCC) Diesel is becoming an increasing concern in the refinery industry. The objective of this paper is to study the changes of non-hydrocarbons in FCC diesel during the deterioration of the stability by IR, GC and UV. It is demonstrated that during the storage or under stressing conditions, the diesel becomes deteriorated, and some unstable phenols, thiols and some nitrogen compounds involve in the color change and deposit formation. The content of thiols and phenols reduces during the accelerated aging of diesel. The contents of heteroatoms (S, N, O) in the deposit are a few times higher than that in the diesel. When phenols or thiols in diesel are removed, the stability of diesel is improved to some degree. 相似文献
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《Petroleum Science and Technology》2013,31(9-10):1047-1055
ABSTRACT The problem of the instability of Fluidized Catalytic Cracked (FCC) Diesel is becoming an increasing concern in the refinery industry. The objective of this paper is to study the changes of non-hydrocarbons in FCC diesel during the deterioration of the stability by IR, GC and UV. It is demonstrated that during the storage or under stressing conditions, the diesel becomes deteriorated, and some unstable phenols, thiols and some nitrogen compounds involve in the color change and deposit formation. The content of thiols and phenols reduces during the accelerated aging of diesel. The contents of heteroatoms (S, N, O) in the deposit are a few times higher than that in the diesel. When phenols or thiols in diesel are removed, the stability of diesel is improved to some degree. 相似文献
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柴油的储存安定性研究 总被引:6,自引:0,他引:6
用2,5—二甲基吡咯、四氢咔唑代表非碱性氮化合物,2—甲基吡啶、2—甲基喹啉代表碱性氮化合物,苯乙烯代表不饱和烃,苯甲酸、环烷酸、l—萘酚、对甲苯磺酸、邻甲苯硫酚代表酸性化合物和含硫化合物。将这些化合物单独和以各种组合形式加入直馏柴油中,观察它们对柴油安定性的影响。结果表明,除2,5—二甲基吡咯外,其它化合物在没有非碱性氮化合物的催化作用下,对柴油安定性的影响很小。2,5—二甲基吡咯与酸性化合物共同作用,对柴油的安定性影响最大,特别是它与对甲苯磺酸、l—萘酚共同作用时,对柴油安定性的影响要远大于与烷基和环烷基酸性化合物共同作用的影响。传统的由酚类和胺类抗氧剂为主的安定性添加剂,对含有较多类似2,5—二甲基吡咯类的非碱性化合物引起的柴油的不安定是无效的。新研制的柴油安定性添加剂对抑制由非碱性化合物引起的催化裂化柴油的颜色变深和沉渣生成有较好的效果。 相似文献
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闫国兵 《石油与天然气化工》2005,34(4):271-272
针对催化柴油的氧化沉渣和颜色达不到新标准的问题,通过对GX-105柴油稳定剂进行的工业试验,考察了使用GX-105柴油稳定剂的效果,分析了GX-105柴油稳定剂在不同温度和不同加注浓度下对催化柴油的氧化沉渣和颜色的稳定作用。 相似文献
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复合吸附剂提高催化裂化柴油安定性的研究 总被引:7,自引:1,他引:6
用改性活性白土吸附精制催化裂化柴油,精制后柴油的安定性得到显著提高。对精制后柴油的分析表明:复合吸附剂能够大幅降低油品中的总硫和碱性氮含量,对油品其它性质无大的影响。 相似文献
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Abstract The method of alkali-alcohol extraction and doping with model compounds (phenols) were used to study the effect of phenols on the oxidation stability of fluid catalytic cracking (FCC) diesel fuel. The results of the elemental analysis showed the existence of the phenols. The phenols were identified by analyzing the extract using GC-MS. The results showed that most of the phenols in diesel fuel are mainly small molecules, usually having one or two short alkyl side chains in the ortho position, meta position, or para position of the hydroxyl. The results for total insoluble and induction period show that the extract has a negative effect on the stability of diesel fuel. The total insoluble decreased from 3.57 mg/100 ml to 1.26 mg/100 ml after the alkali-alcohol extraction. The effects of the type and content of phenols on oxidation stability was investigated by adding various kinds and contents of phenols to FCC diesel fuels. The phenol with alkyl side chains on the ortho position and para position of the phenylic hydroxyl group had positive effect on antioxidation, and the phenols with meta position alkyl side chains had no obvious effect on the antioxidation of FCC diesel fuel. 相似文献
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由于国家对柴油质量要求的不断提高,许多炼油厂和科研单位已将柴油质重问题作为重点研究对象,并取得了一定的成果。文中主要在对比目前催化裂化柴油所采用的各种精制方法的基础上,论述了发展催化裂化柴油非加氢精制技术的重要性,并详细介绍了该技术的最新进展和研究结果。从各种催化裂化柴油非加氢精制技术的研究结果来看,它们都取得了良好的脱氮效果,柴油的安定性得到了很大提高,精制后的柴油质量都达到了一级品或优级品的要求,产品收率最低也达到了96%以上,具有良好的应用价值。根据目前国内柴油生产的现状,在这些研究结果的基础上,提出了切实可行的建议。 相似文献
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催化裂化汽油组成对其储存安定性的影响 总被引:3,自引:0,他引:3
通过对催化裂化(FCC)汽油组成、诱导期、吸光度等性质指标的跟踪测试,考察了影响FCC汽油安定性的主要因素。结果表明,FCC汽油中除按产品质量要求严格控制含量的烯烃、总硫及硫醇是影响FCC汽油不安定的主要因素外,共轭二烯烃的存在严重影响FCC汽油的储存安定性,含氮化合物是油品变色的关键物质,而大部分酚类化合物具有抗氧化性,它们的存在有利于延长氧化变质诱导期,但对FCC汽油生胶、变色具有酸性催化剂作用。酚含量越多的FCC汽油,其诱导期越长,但油品变色也越快。FCC汽油的酚含量较高(>200μg/g)时,其诱导期随着二烯值的增大而缩短,储存吸光度随着二烯值、碱性氮含量的增大而增加;酚含量较低(<120μg/g=时,汽油颜色稳定,二烯值、碱性氮含量的变化对储存吸光度影响不大,二烯值小至0.7μg/g也可导致诱导期缩短。通过优化催化原料和操作条件、优化调合和添加抗氧防胶剂等措施,可有效地提高FCC汽油的储存安定性。 相似文献