Optimizing Naphtha Utilization Based on Molecular Scale Management

The technology of separating normal paraffins from naphtha through adsorption using 5A molecular sieves was studied. The separation efficiency of the normal paraffins was above 99.99%. Using the desorption oil as the feedstock of steam cracking, the ethylene yield increased from 29.7-35.0% to 41.4-49.2% compared to that of the naphtha. The research octane number of the raffinate oil reached more than 85 units with an increase of 20 units compared to that of naphtha.     

超细分子筛材料的合成与应用研究进展

综述了近几年超细分子筛的合成与应用方面的研究进展,重点介绍了几种常用且研究较多的分子筛,主要包括Y,ZSM-5,β,Silicalite-1,ZSM-35,MCM-22等分子筛。对超细分子筛的合成方法及其在石化、环保和生物等领域的应用进行了介绍,并对分子筛复合材料的研究及应用的最新动态进行了评述,说明超细分子筛材料的应用领域仍在不断拓宽,超细分子筛复合材料的研究将会成为分子筛材料领域未来的重要发展方向。     

OCT-M FCC 汽油深度加氢脱硫技术的研究及工业应用

比较研究了MIP汽油与常规FCC汽油的特点，考察了抚顺石油化工研究院(FRIPP)开发的OCT-M催化汽油选择性加氢脱硫技术由MIP汽油与FCC汽油生产硫含量≯50µg/g汽油的情况下的辛烷值损失。工业应用结果表明，OCT-M技术将MIP汽油硫含量由417～442µg/g降低到24～53µg/g，RON损失0.7～1.8个单位。因此，OCT-M技术可为我国炼厂生产硫含量≯50µg/g的清洁汽油提供经济、灵活的技术方案。     

Monolithic Catalysts with Low Noble-Metal Content for Exhaust Purification of Small Gasoline Engines

A series of low noble-metal coment monolithic catalysts for exhaust purification of small gasoline engines was investigated, and it was found that the Pt/Rh-OSM/Al2O3 （where OSM was oxygen storage material） catalyst with Ce0.5Zr0.5-MnOx（3%MnOx） OSM held low light-off temperature for CO, HC, and NO; quite wide three-way window, and outstanding thermal stability. The catalyst could efficiently comrol exhaust emission of small gasoline engines.     

直馏汽油异构化装置的运行

长庆油田公司第二助剂厂新建的 70kt a直馏汽油异构化装置 ,采用二个反应器 ,以常压直馏汽油为原料 ,采用非临氢重整催化剂 ,生产的异构化汽油的研究法辛烷值约 90 ,但改质汽油收率较低 ,仅 65 %左右     

我国车用无铅汽油的质量状况及分析

对1998－2001年间生产领域和流通领域的近500批次汽油产品检验数据进行了总结和分析，表明我国汽油的实物质量正在不断提高，但从环保要求出发还需不断向国际水平靠扰，尤其应进一步降低烯烃含量，硫含量。     

车用清洁汽油及其生产技术

分析了我国车用汽油的现状以及与国外清洁汽油新标准的差距,介绍并讨论了为满足新标准车用清洁汽油可采用的汽油脱硫技术、降低汽油烯烃技术、高辛烷值调合组分生产技术,汽油清净剂与含醇汽油技术。     

Study of Desorption Agent for LADS Process

This article refers to the procedure for selection, evaluation and development of the LADS-D desorption agent associated with the LADS-A adsorbent used in the non-hydroprocessing adsorptive desulfurization (LADS) process for FCC naphtha developed by LPEC Refining Research Institute. The LADS-D desorption agent can effectively remove the sulfides adsorbed on the LADS-A adsorbent. The saturated LADS-A adsorbent can be instantly regenerated by the LADS-D desorption agent to recover its adsorption activity. The LADS-D desorption agent can not only effectively remove all impurities adsorbed on the adsorbent, but also has strong ability to dissolve the impurities to keep a stable desorption efficiency of adsorbent to be basically commensurate with fresh adsorbent after extended use.     

QLH-02裂解汽油二段加氢催化剂工业应用

通过载体改性及催化剂制备工艺研究,中国石化齐鲁分公司研究院成功开发了QLH-02低温型裂解汽油二段加氢催化剂。在中国石化齐鲁分公司烯烃厂裂解汽油二段加氢装置应用结果表明,该催化剂强度高,装填量少,在二段加氢反应器入口温度为265℃、压力为2.65 MPa、液体空速4.0 h-1、氢油体积比800~1 000的操作条件下,产品中硫含量小于1μg.g-1,双烯值(B r2值/100 mL,以下同)小于0.05 g,溴值(B r值/100 mL,以下同)小于0.09 g,远低于控制指标,具有很好的低温加氢活性,明显降低了能源消耗。     

汽油机爆震强度的分析

分析了汽油机缸内气体爆震燃烧压力的频率特性并推导了爆震压力共振频率计算公式。研究表明：在爆震工况下，缸内压力在高频域中有几个共振峰，峰的大小表明了汽油机爆震强度。汽油机的表面振动在这些共振频率峰处也出现相应振动峰。表面振动峰与缸力压内峰值近似成正比。汽油机表面振动峰值可作为爆震强度的评价指标，该结论在ＣＡ１１０２汽油机上得到了证实。