查询词典 gasoline

Changes to FCC gasoline cutpoints and the possibility of blending by dilution (adding components such as ethers or alkylate) can be used to meet a sulfur or olefin specification for individual gasoline grades if a preliminary blend is already close to the specification and the refinery desires to increase total gasoline production.

对FCC 汽油cutpoints 的变动和混和的可能性由稀释(增加组分譬如以太或烷基化)可能使用符合各自的汽油等级的硫磺或烯烃规格如果初步混合已经是紧挨规格和精炼厂渴望增加总汽油生产。

At least, there are three things needed to do: the improvement of gasoline processing, the study of new additives which can improve the antiknock properties of gasoline, and the quality control on gasoline production.

因此，汽油生产加工工艺的改进，提高汽油抗爆性能的添加剂的研究，以及汽油生产中的质量控制成为亟待解决的重要问题。

The combined scheme of selective hydrogenation and etherization of FCC's light gasoline and hydrogenation desulfurization of heavy gasoline can make gasoline quality meet EURO IV Standard, indicating that this combined scheme is a feasible scheme selection for gasoline quality updating and upgrading.

FCC汽油实施加氢、醚化及重汽油加氢脱硫组合方案后，可使该汽油质量满足欧IV标准，说明该组合方案是实现汽油产品升级换代的一种可行的方案选择。

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数字变频发电机，电动工具，汽提塔壁纸，电动喷雾器气油漆，曲线锯，电动刨床，砂轮机，水磨机，砂光机，小型磨粉机，电动汽车螺丝刀，往复锯，锤钻，拆除断路器，带厚度刨床锯，锯字，表看到，路由表，滚动看到板凳刨床，部分洗衣机，钻石核心的演习中，磁性钻，钢筋切割机，电动切割机穿孔， Drywall桑德，空气泵，无绳角磨机，无绳圆锯，无绳螺旋看见，无绳拼图，无绳刨床，无绳吸尘器无绳往复锯，无绳三角洲桑德，无绳Falre工具，燃烧工具，无绳Ratary轻，无绳工具集，无绳工具，无绳演练，无绳锤钻，抛光机，抛光车载无线电话，无绳冲击扳手，汽油冲击扳手，无绳堵漏枪， 12V的汽车千斤顶，扳手影响车库汽车抛光工具，无绳堵漏枪，汽油压力，洗衣机，高压清洗，瓷砖切割机，泥瓦工看到，瓷砖看到，工程机械，平板振动抛光，振动长矛，插入式高频颤音，俄夯，电力抹子，板机，混凝土搅拌机，钢刀具，汽油链锯电锯无绳链锯，电链锯，锯极点，电锯磨刀，琼斯碎纸机，地球俄汽油分蘖，克罗珀基层裁纸机，刷机对冲裁纸机，割草机电动LawnMower ，无绳割草机，汽油割草机手推割草机缸叶片风机，风机叶片汽油，花园泵，悬停割草机，草坪耙汽车锄头，雪标枪，日志分流，木柴切削看到，记录看到，柴油汽油分蘖分蘖汽油琼斯碎纸机，琼斯碎纸机基层汽油机，汽油刷机，电刷镀机，电动基层三聚体，草坪Edgers ，无绳基层裁纸机机对冲电气

The catalyst of RFG-DQ and DOCO(1) can both reduce the olefine content of gasoline dramatically, with the yield of LPG ,diesel and coke reduced and the yield of gasoline increased, as well as octane number of gasoline reduced more greatly.The olefine content of gasoline can be effectively reduced by optimizing the operation condition, lowering the reaction temperature, increasing the catalyst-to-oil ratio and using catalyst, which can improve the gasolines quantity and upgrade the gasoline.

通过优化操作条件、降低反应温度、增大剂油比和采用有效降烯烃催化剂等措施可以有效的降低催化裂化汽油的烯烃含量，提高催化裂化汽油的产品质量，达到我厂汽油产品升级换代的目的。

Study result suggest: The change of stock in RFCCU directly affect gasoline content. Gasoline content can be reduced through increasing the equilibrium activity of catalyst, controlling reaction level, increasing recirculating rate of gasoline and stability of gasoline level. Conclusions drawn from experiment is that optimization of operating condition has great effect on lowering olefine content of gasoline which can be reduced from 60% to 50%.Reducing reaction temperature is useful for lowering olefine content of gasoline, when the reaction temperature is raised, thermal cracking rate is higher than catalytic cracking rate, so that olefine content is increased. Raising catalyst-to-oil ratio is good for lowering olefine content. With conversion rate increased, the yield of LPG and coke is raised, the yield of gasoline is increased firstly and then decreased slightly, hydrogen transfer index is increased, so the olefine content is decreased.

研究结果表明：催化裂化装置的原料的变化直接影响到催化汽油的烯烃含量；可以通过优化催化装置的操作条件来降低催化汽油中的烯烃含量，其中通过提高催化剂平衡活性、控制反应深度、增加汽油回炼量、汽油深度稳定可以降低催化汽油烯烃含量，优化工艺条件对降低催化汽油烯烃含量有较大作用，汽油烯烃含量由60％降至50％左右；降低反应温度有利于降低催化汽油的烯烃含量，当反应温度的提高，热裂化反应速度提高的幅度大于催化裂化反应速度提高的幅度，汽油烯烃含量增加；剂油比的提高有利于降低催化汽油的烯烃含量，转化率提高，液化气产率提高，汽油收率先增加后略有下降，焦炭产率增加，氢转移反应指数提高，汽油烯烃含量下降；反应时间对产品分布及汽油烯烃含量有影响，增加提升管反应时间，液化汽、汽油产率提高，干气和焦炭产率增加。

Saving gasoline is the most distinct peculiarity of this new type of sport car.

柴油 D。能量省油是这种新型的跑车最显著的特点。发音记忆： gasoline→要省着用汽油→汽油

Therefore, the need for a gasoline engine when to control the spark plug ignition system. This system requires an accurate control of spark plugs and spark discharge energy of the moment, be able to ensure the normal gasoline engine. gasoline engine fuel supply system and ignition system is a high proportion of the gasoline engine fault location.

因此，汽油发动机需要一套控制何时让火花塞工作的点火系统，此系统必须精确控制火花塞放电的时刻和火花能量的大小，才能保证汽油机的工作正常，汽油机的燃料供给系和点火系是汽油机上发生故障比例较高的部位。

E. , gasoline including catalytic cracking gasoline, reforming gasoline and some commercial gasoline and diesel oil including first-cut, second-cut and third-cut diesel oil, were studied for their RON and flash point, respectively.

近红外分析方法是目前发展比较迅速的一种快速分析方法，它具有快速、准确、重复性好、无污染、便于实现在线分析等特点，因此被广泛应用于石化行业的各个领域。

This article analyzed characteristics and development trend of FCC gasoline in China, introduced the characters and plant effects of OCT-M and FRS FCC gasoline selective hydrodesulfurization process, especially the commercial application effect of the production of States Ⅲ and Ⅳ regulation gasoline. The commercial test results showed that OCT-M and FRS process were mature and credible, and had the characteristics of low pressure, low investment, convenient operation, low H2 consumption and high liquid yield. OCT-M and FRS process could offer refineries optional economical and flexible measure to produce States Ⅲ and Ⅳ regulation clean gasoline.

分析了我国FCC汽油的特点及发展趋势，介绍了OCT-M和FRS FCC汽油选择性加氢脱硫技术特点及中试效果，着重介绍了OCT-M和FRS FCC汽油选择性加氢脱硫技术生产国Ⅲ、国Ⅳ汽油的的工业应用效果，标定结果标明，OCT-M和FRS技术成熟可靠，具有装置压力等级低、投资省、操作方便、氢耗低、汽油产品收率高等特点，是我国炼厂生产国Ⅲ、国Ⅳ清洁汽油时可供选择的经济、灵活的解决方案。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。