使用GOR—KC催化剂降汽油烯烃

为了降低催化汽油中烯烃含量,提高汽油产品质量,炼油厂使用了石料院开发的GOR－C催化裂化催化剂。通过GOR－C催化剂在1号催化装置上的使用,发现GOR－C催化剂具有良好的流化性能、重油裂化能力和稳定性,裂化活性较强,且活性保持率较高。催化剂与操作条件匹配合理,明显降低了汽油产品的烯烃含量,诱导期延长,安定性提高。     

降烯烃催化剂GOR—C的特点及应用

介绍了降低FCC汽油燃烃含量催化剂GOR－C的特点及其工业应用情况，工业应用结果表明：GOR－C系列催化剂在不同的装置都能有效地使FCC汽油烯烃体积含量降低10％－13％，与工艺条件紧密配合，可使FCC汽油烯烃含量降低到35％以下，是生产优级清洁汽油较理想的FCC催化剂。     

催化汽油多种降烯烃新技术投用

我国自行开发生产清洁汽油的催化汽油加氢异构脱硫降烯烃 (RIDOS)技术在燕山石化公司建成工业化装置并成功投运。投运标定结果显示 ,催化裂化汽油烯烃含量从 5 1 8%降到 19 1% ,硫含量降低到 30ppm以下 ,汽油抗爆指数损失小于 1 3,C+ 3液收达 10 0 6 %。表明该项技术不仅能大幅度降低催化裂化汽油烯烃和硫含量 ,而且汽油辛烷值损失小 ,产品收率高。该技术具有国际领先水平。降烯烃催化剂和添加剂也不断推出。中石化石油化工科研院开发了GOR系列催化剂 ,已在洛阳、高桥和燕山石化公司工业化应用。这种类型催化剂通过增加稀土元素含量 ,…     

催化裂化催化剂 GOR 的氢转移活性与降低汽油烯烃含量性能的研究

考察了多种改性材料的氢转移反应活性及对催化裂化催化剂的重油转化活性及汽油中烯烃含量的影响规律。采用高活性稳定性的改性分子筛材料，在较优的工艺条件下制备了可以降低催化裂化汽油烯烃含量的GOR催化剂。小型固定流化床评价结果表明，另一般重油裂化催化剂相比，在裂化能力和选择性相当时，GOR催化剂可降低汽油烯烃含量5．2个百分点，且汽油辛烷值略有提高。     

GOR—C催化剂在辽河VGO催化裂化装置中的应用

为满足汽油中φ（烯烃）＜35％的要求,锦州石化公司在以辽河原油直馏VGO为原料的催化裂化装置上试用了由石油化工科学研究院开发的降低催化裂化汽油中烯烃含量的新型催化剂COR－C。结果表明,当GOR－C占反应再生系统催化剂藏量28％左右时可使其稳定汽油中的φ（烯烃）降到35％以下,RON为92．6,诱导期1740min,创国内辽河VGO应用FCC工艺和GOR－C催化剂生产合格新标准汽油的首例。     

GOR-Q 降低汽油烯烃含量催化裂化催化剂的工业应用

报道石油化工科学研究院与齐鲁石化公司催化剂厂俣作开发的第一代降低低汽油烯烃含量的催化剂裂化催化剂GOR－Q的中试和工业放大研究结果。该剂人有重油裂化能力强，稳定性好，汽油烯烃含量较低等特点。同时GOR－Q催化剂制备过程可行，重复性好。在高桥石化公司的工业应用结果表明：该剂与同类渣油裂化催化剂相比，汽油烯烃体积含量可降低8．68个百分点。     

降低催化裂化汽油烯烃的催化剂 GOR-Q 评价试验

在小型提升管催化裂化试验装置上，参照胜利炼油厂催化裂化装置的工艺条件，对新型降烯烃催化剂GOR－Q与该厂原用的ZC－7000催化剂进行对比评价试验。结果表明：采用GOR－Q催化剂所得汽油烯烃含量比采用ZC－7000催化剂降低约12个百分点，有望 在工业装置使用后满足清洁燃料对烯烃含量的要求。     

降低汽油烯烃含量用RFG-NJ催化剂的工业试验

在 1.0Mt/a重油催化裂化装置上进行了降低汽油烯烃含量用RFG -NJ催化剂的工业试验 ,并进行了标定。标定结果和日常统计数据分析表明 ,RFG -NJ催化剂具有显著降低汽油烯烃含量的性能。在装置掺渣率为 2 5 %左右、反应温度下降 6℃的情况下 ,汽油烯烃含量由48.6%下降至 3 6.5 % ,下降了 12 .1个百分点 ,汽油的诱导期延长 ,安定性得到改善 ,但汽油辛烷值略有下降 ,装置的总轻烃收率变化不大 ,丙烯收率下降了 0 .13个百分点     

提高汽油质量的工艺技术进展

主要介绍各种提高汽油质量的工艺技术进展情况,包括降低汽油硫含量的SCANfinin、ISAL、RSDS等工艺;降低烯烃含量的催化剂RFG、GOR系列及MGD工艺和两段提升催化裂化新技术;同时介绍了其它优质汽油生产技术的烷基化、异构化、醚化工艺的最新进展.     

在重油催化裂化装置上生产低烯烃汽油

介绍中国石化股份有限公司北海分公司在重油催化裂化装置上进行的MGD技术工业试验和生产低烯烃汽油的情况。生产结果表明 :采用RGD C催化剂、MGD技术和操作条件优化相结合 ,诸如汽油回炼 ,保持较高平衡催化剂活性及降低反应温度等 ,可以使常压渣油为原料的重油催化裂化汽油烯烃体积分数从 5 4 .3%降至 2 8.0 % ,RON变化不大 ,MON明显上升 ,抗爆指数增加。液化气产率提高 3.98个百分点 ,柴油产率提高 0 .4 3个百分点 ,汽油产率降低 2 .15个百分点 ,油浆产率降低 3.0 2个百分点。     

Study on Olefin Decrement Reformulation and Increasing Light Olefins of FCC Gasoline by Catalytic Cracking

Abstract

Catalytic upgrading of fluid catalytic cracked (FCC) gasoline obtained from Huabei Petrochemical Company, PetroChina (Renqiu, Hebei, China), was investigated using a microreactor and gas chromatograph integrated unit in order to decrease the content of olefins in gasoline and increase the light olefins (ethylene, propylene, and butylene) content. The experimental results showed that the olefin content in upgraded gasoline can be decreased from 42.6% in raw material to nearly 10%, meeting the requirements of the new gasoline standard, whereas iso-alkane and aromatics contents were markedly increased, from 28.4 and 18.2% to 47 and 36.1%, respectively, so the octane number of gasoline should not be reduced. In addition, higher yields of light olefins were obtained after FCC gasoline was reformulated under laboratory conditions. Higher reaction temperature, longer reaction time, higher weight ratio of catalyst to oil, and higher catalyst activity were beneficial to decrease the olefin content of FCC gasoline and increase the yields of light olefins.     

Investigation of the Operating Conditions on Decreasing FCC Gasoline Olefin Content by GOR-Q Catalyst

Abstract

Based on a fixed-fluid-bed reactor and a GOR-Q catalyst, the influence of process parameters on decreasing gasoline olefin content was studied. The results show that the catalyst had an obvious effect on the decreasing gasoline olefins. A higher catalyst-to-oil ratio, lower weighted hourly space velocity, and lower reactor temperature give rise to lower gasoline olefin content. The reduction of fluid catalytic cracking (FCC) gasoline olefin content is achieved by decreasing olefins of low carbon number. Reaction temperature under 520°C and catalyst-to-oil ratio = 7.0 for a GOR-Q catalyst are advantageous for decreasing olefin content of FCC gasoline.     

Reducing Olefins Content of FCC Gasoline Using a NANO-HZSM-5 Catalyst

The study of reducing olefins properties on nano-HZSM-5 catalyst was investigated with a continuous fixed reactor using fraction of fluid catalytic cracking gasoline (75N120°C). The experimental results showed that nano-HZSM-5 catalyst has the best reducing olefins properties under the optimal conditions: temperature 430°C, pressure 0.3 MPa, and liquid hourly space velocity 1 h^-1, and the content of olefins in the feed stock decreased to 12.11% and dropped 31 percentage points. The yield of liquid product, the content of aromatics, and the content of isoalkane in liquid product are up to 84.98%, 39.58%, and 35.23% respectively.     

Reducing Olefins Content of FCC Gasoline Using a NANO-HZSM-5 Catalyst

Abstract

The study of reducing olefins properties on nano-HZSM-5 catalyst was investigated with a continuous fixed reactor using fraction of fluid catalytic cracking gasoline (75N120°C). The experimental results showed that nano-HZSM-5 catalyst has the best reducing olefins properties under the optimal conditions: temperature 430°C, pressure 0.3 MPa, and liquid hourly space velocity 1 h^?1, and the content of olefins in the feed stock decreased to 12.11% and dropped 31 percentage points. The yield of liquid product, the content of aromatics, and the content of isoalkane in liquid product are up to 84.98%, 39.58%, and 35.23% respectively.     

A New Catalyst for the Non-hydrogenation Reduction of Olefins

In this article, the preparation and application of a nonhydrogenation-reducing olefin catalyst were studied. The carrier of this catalyst was synthesized by γ-Al₂O₃ and SiO₂. It was found that the optimum molar ratio was 1:1 and the more suitable synthetic temperature was 80°C. The catalyst consisted of transition element Ni, W loading on the carrier that was self-made. Meanwhile, the properties of the catalyst were determined by an x-ray diffraction pattern (XRD), N₂-adsorption, and an FT-IR spectrophotometer. In order to study the performance of the catalyst, it was dried and calcined, and then it was reacted with the feed gasoline on the small fixed vector. The results showed that the content of olefins in fluid catalytic cracking (FCC) gasoline had been reduced from 51.0% to 25.6% when the reaction temperature was 170°C, the space velocity was 1.5 h^-1, and the reaction pressure was 2.5 MPa. The experimental results showed that the method of the catalytic preparation was simple and convenient, the activity of the catalyst was very high, and the regeneration and stability were also very good. The olefin content was reduced by more than 20% in FCC gasoline; the original octane number was not changed. Therefore the quality of the gasoline would meet the new gasoline standard (GB). The catalyst had very high industrial application value.     

FCC汽油催化裂解反应的实验考察

采用微反-色谱联合的方法,考察了反应温度、反应时间及催化剂活性对哈尔滨炼油厂流化催化裂化汽油催化裂解的产品分布、低碳烯烃(乙烯、丙烯和丁烯)产率和产品汽油族组成的影响。结果表明,在反应温度590℃、剂油比170、反应时间0.24s的实验条件下,FCC汽油经催化改质后,烯烃含量大幅度下降,可由改质前的41.6%降到改质后的13.4%,满足汽油新标准的要求,而异构烷烃和芳烃含量有较大幅度增加,分别由改质前的33.3%、13.3%增到40.4%、35.7%,使汽油在降低烯烃含量的同时,辛烷值不会降低,并且还会增加低碳烯烃的产率。此外,提高反应温度、延长反应时间、提高催化剂活性均有利于降低改质汽油的烯烃含量,增产低碳烯烃。     

相转移催化剂催化降低FCC汽油烯烃含量的研究

 将磷钨杂多酸季铵盐相转移催化剂/双氧水(Q₃[PO₄(WO₃)₄]/H₂O₂)体系应用于FCC汽油的液-液高效催化氧化降烯烃. 结果表明, 在H₂O₂用量2.5ml、剂/油质量比1:40、pH值3.33、反应温度60℃、反应时间1h的条件下, FCC汽油烯烃体积分数下降了23.56%, 而汽油辛烷值基本保持不变. 处理后的FCC汽油完全符合我国清洁汽油规定的烯烃体积分数低于35%的新标准. 对FCC汽油加入催化剂前后烯烃含量分布的分析结果表明, FCC汽油在该催化体系中烯烃含量的下降主要集中在C₅、C₆、C₇等低碳烯烃上. 另外,还对该催化氧化体系脱除FCC汽油中的硫含量进行了初步探讨.     

直馏汽油非临氢改质技术的工业应用

摘要扬州石油化工厂20 kt／a直馏汽油非临氢改质装置的运行结果表明,石油化工科学研究院开发的RGw-l型直馏汽油非临氢改质催化剂的活性、选择性高,单程运转周期大于70 d,再生后反应性能完全恢复。改质反应产品收率高,干气产率小于2％。产品品质好,改质后汽油RoN提高30个单位以上,烯烃质量分数小于2％,是汽油降烯烃的优质调合组分;副产液化气的烷烃体积分数达95％以上,可以作为车用液化气。该催化剂还可用于含ct烯烃原料的改质。为直馏汽油和c。馏分的升值利用及炼油厂汽油降烯烃开辟了一条新途径。     

催化裂化装置生产清洁汽油

独山子石化公司炼油厂催化裂化装置，从2002年3月开始进行汽油降烯烃实验，通过调整工艺条件，使用降烯烃催化剂等措施使汽油烯烃含量由56％降至38％，并找出最佳的操作条件，减少降烯烃操作对产品分布的影响。     

原料族组成对汽油馏分催化裂解反应性能的影响

利用多产低碳烯烃催化剂NHC-516,在小型固定流化床实验装置上对催化裂化汽油、焦化汽油和直馏汽油的催化裂解性能进行了实验研究,考察了不同原料族组成对催化裂解产物分布、低碳烯烃收率以及催化裂解液相产物族组成的影响.结果表明:乙烯的收率随着反应温度的升高呈抛物线增长;催化汽油和焦化汽油的丙烯收率远高于直馏汽油的丙烯收率;烯烃与链烷烃有协同作用,烯烃能够加速链烷烃的反应速率,这是焦化汽油干气收率高的主要原因;在有烯烃存在时,芳烃会生成大量的焦炭;烯烃和链烷烃是生成低碳烯烃的主要来源,是催化裂解的理想组分.