催化裂化汽油腐蚀不合格的原因

通过酸、碱、水洗试验分析，博士试验分析，汞洗试验分析，卤素、氮、硫含量分析及腐蚀钢片表面俄歇电子能谱分析，证实了广州石化总厂催化裂化汽油腐蚀属于硫化腐蚀，造成腐蚀的物质主要是存在于汽油中的微量活性流。     

催化裂化汽油腐蚀不合格原因及处理方法：Ⅱ.处理方法研究

本文针对我厂催化裂化汽油腐蚀不合格原因，进行了一些处理方法的研究，并开发出ＣＩ－１汽油抗腐蚀添加剂，解决催化理解化汽油腐蚀不合格问题，该剂使用简单易行，成本低，效果好。     

催化裂化汽油腐蚀不合格原因分析与对策

针对中国石油化工股份有限公司金陵分公司Ⅰ套催化裂化装置采用纤维膜工艺碱洗脱硫醇汽油腐蚀时常不合格现象,分析发现主要原因是硫化氢、元素硫、多硫化物含量高,采取了增加分馏塔注水、稳定系统循环水洗、汽油预碱洗以及优化操作等针对性措施,解决了汽油腐蚀问题.     

催化硫醇汽油腐蚀不合格原因探讨及对策

稳定富气水洗注高含硫氨水及电后催汽携带碱渣是造成经汽油铜片腐蚀不合格的主要原因，采用富气水洗注合格的净化水或脱盐水，提高稳定塔、解吸塔塔底温度，并在分馏塔顶注氨，可解决问题。     

重油催化裂化汽油铜片腐蚀的原因

选择具有代表的铜片腐蚀不合格的重油催化裂化汽油样作为考察对象，用化学方法对油样中的腐蚀性物质进行定性分析，并和乙知合物进行对，现油样中腐蚀性质主要元素硫和多硫化物，同时对铜片上腐蚀产物的分析结果也表明腐蚀产物中含硫，此外，试验发现元素硫不能用碱液除去，但可被溶剂Ａ和水的混合碱液萃取，对于腐蚀油样有同样的试验结果。     

催化裂化汽油铜片腐蚀抑制剂的开发

催化裂化汽油铜片腐蚀抑制剂的开发朱根权，夏道宏，项玉芝，苏贻勋（石油大学（华东），东营２５７０６２）１引言通过对元素硫和其它硫化物腐蚀性能的考察［‘］，并结合炼油厂生产汽油过程中，ＲＦＣＣ汽油出现钢片腐蚀试验不合格的实际情况，发现ＲＦＣＣ汽油出现钢片...     

催化裂化汽油脱臭后博士试验不合格的原因

在对硫醇及混合硫醇的博士试验灵敏度进行测定的基础上，通过精密分馏，分析了催化裂化（ＦＣＣ）汽油脱臭前后硫醇的分布，同时考察了过氧化物对博士试验的影响，找到了ＦＣＣ汽油博士试验不合格的原因是高碳硫醇．尤其是Ｃ＿５以上的异构硫醇的存在。     

催化裂化汽油铜片腐蚀影响因素的研究

从催化裂化汽油的精制工艺入手,分析了造成汽油铜片腐蚀不合格的原因,对汽油中的活性硫化物如元素硫、硫化氢等进行了深入研究,并对如何避免汽油铜片腐蚀的发生提出了建议。研究表明:催化裂化稳定汽油中的硫化氢气体、元素硫和硫醇是引起铜片腐蚀的主要物质;催化裂化装置有时出现的汽油铜片腐蚀不合格是由其循环碱液引起的。     

制备因素对催化裂化汽油加氢脱硫催化剂性能的影响

针对催化裂化汽油脱硫技术要求,介绍了一种以共沉淀法制备的载体负载Co、Mo活性金属组分的催化汽油加氢脱硫催化剂,考察了载体Mg／Al原子比、焙烧温度、活性金属含量对催化剂活性及选择性的影响,并对本研究的催化剂进行了1000h的稳定性试验。实验结果表明,采用Mg／Al=X 0、5、焙烧温度(y 200)℃所制备的载体,在其活性金属MoO3含量8％、CoO含量2.0％时,催化剂具有适宜的酸性中心数和最佳的脱硫选择性;本研究催化剂在1000h的试验运转过程中,具有较高的脱硫率和较低的烯烃饱和率,其活性稳定性良好。     

操作参数对FCC汽油烯烃度的影响

在XTL-5小型提升管催化裂化试验装置上,考察了操作条件对汽油烯烃度的影响。在此基础上,分别构造了两个表示烯烃含量大小和氢转移反应强弱的参数——烯烃度和氢转移指数。还探讨了反应温度和剂油比等操作条件对FCC汽油烯烃度的影响规律及机理。     

Improving Stability of FCC Gasoline Using Ionic Liquids Catalyst After Treating

The ionic liquids used herein were alkyl-containing ammonium-aluminum chloride ionic liquids system, which were made by the reaction of short-chain alkyl ammonium salts and aluminum chloride. The factors influencing stability of gasoline and the importance of improving it were described in this article, so was the characteristic of ionic liquids. A novel way to improve the stability of gasoline using ionic liquids was studied herein, as well as the study of decreasing the basic nitrogen content and the sulfur content of mercaptan, treating the gasoline and decreasing the olefin content of gasoline with supported ionic liquids catalyst on a small scale. After treating, the sulfur content of gasoline decreased to 0 nearly, and the basic nitrogen content decreased greatly too, whereas the octane number (RON) of gasoline increased a little. To improve the catalysis of ionic liquids and prolong the using life of ionic liquids, a buffering agent was added into ionic liquids. Ionic liquids catalyst, as a green catalyst friendly to environment, can displace many other alkylation catalysts, decrease the olefin content of gasoline, and show their notable advantages: mild conditions, short reaction time, simple operation, easy separation of the products and the catalyst.     

Improving Stability of FCC Gasoline Using Ionic Liquids Catalyst After Treating

Abstract

The ionic liquids used herein were alkyl-containing ammonium-aluminum chloride ionic liquids system, which were made by the reaction of short-chain alkyl ammonium salts and aluminum chloride. The factors influencing stability of gasoline and the importance of improving it were described in this article, so was the characteristic of ionic liquids. A novel way to improve the stability of gasoline using ionic liquids was studied herein, as well as the study of decreasing the basic nitrogen content and the sulfur content of mercaptan, treating the gasoline and decreasing the olefin content of gasoline with supported ionic liquids catalyst on a small scale. After treating, the sulfur content of gasoline decreased to 0 nearly, and the basic nitrogen content decreased greatly too, whereas the octane number (RON) of gasoline increased a little. To improve the catalysis of ionic liquids and prolong the using life of ionic liquids, a buffering agent was added into ionic liquids. Ionic liquids catalyst, as a green catalyst friendly to environment, can displace many other alkylation catalysts, decrease the olefin content of gasoline, and show their notable advantages: mild conditions, short reaction time, simple operation, easy separation of the products and the catalyst.     

红外光谱法测定(乙醇)醚化催化汽油中残余乙醇的含量

建立了红外光谱法测定 (乙醇 )醚化汽油中残余乙醇的方法 ,运用可调厚度吸收池消除汽油背景所产生的影响。当乙醇质量浓度为 1 5～ 13g/dl时 ,其误差为 0 1%～ 1 5 % ,相对标准偏差小于 3 % ,回收率为 99 2 %～10 1 5 %。该方法简单、快速、准确 ,也可用于无铅汽油中乙醇的测定     

发展FCC轻汽油醚化工艺

我国FCC汽油作为车用汽油的主要调合组分，其比例已占70％以上，是车用汽油质量不能进一步提高的瓶颈所在．FCC轻汽油醚化工艺将其中的叔碳烯烃转化为醚，在一定程度上弥补了MTBE产量的不足，除提高辛烷值和增加含氧量外，还可降低汽油的烯烃含量和蒸气压，一举多得，值得开发、推广。     

催化汽油加氢精制加氢异构化工艺

为了降低催化汽油中的烯烃含量、硫含量，进行了催化汽油加氢精制加氢异构化的研究。结果表明．采用KT加氢异构化催化剂，通过加氢精制加氢异构化反应，液体产品收率在99％以上，脱硫率在80％以上，汽油的硫含量降到了50μg/g以下，汽油烯烃含量降低了7．25％，辛烷值损失0．8。     

FCC Gasoline Sulfur Reduction by Additives: A Review

Abstract

This review covers publications in the open literature and patents issued during the last 10 years on issues related to fluid catalytic cracking (FCC) gasoline sulfur reduction. Emphasis was placed on FCC additives, their composition and performance. An attempt was made to elucidate the mechanism for sulfur reduction at FCC cracking conditions. Fluid catalytic cracking technology advances, both process and catalyst, have historically worked together to achieve significant improvements in FCC performance. There is every reason to expect that this will continue to be the case in the future. These advances will have an impact on the volume and quality of the FCC gasoline produced and will offer additional operating flexibility.     

FCC汽油降烯烃助剂的研究

采用溶胶凝胶法制备镁铝铌助剂,在600℃焙烧后添加到FCC平衡剂中,在小型固定流化床反应装置上考察其降低汽油烯烃的效果。实验表明,助剂中镁铝配比为1：1的效果最好;添加铌元素后助剂的降烯烃活性增强,含铌2％的助剂降烯烃活性较镁铝助剂增强40％。对助剂的工艺条件进行了考察,得出助剂降烯烃的最佳工艺条件为：空速14．0h^-1,反应温度400℃。