Demand shocks have come from sudden policy decisions to increase biofuel content in gasoline, for example.
需求的波动则来自于，比如说，增加生产生物燃料的政策。
In order to enhance the yield of the total liquid and further reduce the olefin content in gasoline, LHO-1 catalyst is put on trial.
为提高装置总液收率和进一步降低汽油组分中的烯烃含量，催化裂化装置开始试用LHO-1催化剂。
The paper has reviewed the analysis method, the gas chromatography and the near infrared spectroscopy for determining olefin and aromatic hydrocarbon content in gasoline.
对目前采用的快速、简便分析汽油中烯烃、芳烃含量的气相色谱和近红外光谱分析方法进行了评述。
The chlorine content in reformed gasoline was determined by microcoulometry, and the main factors influenced the conversion of chlorine were discussed.
采用微库仑法对重整汽油中的氯含量进行了测定，探讨了影响氯转化率的主要因素。
Heavy oil recovery rate can be increased and gasoline olefin hydrocarbon content can be decreased effectively by catalytic cracking operation parameters optimization.
通过优化催化裂化装置的操作参数可有效提高重油转化率和降低汽油烯烃含量。
Analysis is made on the method and operation condition adjustment by the industrial refinery for reducing olefin content in RFCC gasoline.
对工业装置降低R FCC汽油烯烃含量的方法及操作条件的调整进行了分析。
It has been used as an alternative of gasoline, improvers for octane number and oxygen content in gasoline.
在国外曾以汽油替代物、辛烷值改进剂和增加汽油氧含量三大作用添加到汽油中。
It is necessary to know the formation mechanism and influencing factors of the olefins content of FCC gasoline for developing new processes and catalysts.
了解影响FCC汽油烯烃含量的因素和生成机理对开发新工艺和催化剂十分必要。
Effects of FCC technological conditions on gasoline olefin content were also investigated.
与此同时考察了催化裂化工艺条件对汽油烯烃含量的影响。
The major influencing factors of blending coker naphtha for 90 RON unleaded gasoline are its distillation range, octane number, existent gum and mercaptan content.
影响焦化汽油调合生产90 号无铅汽油质量的主要因素是焦化汽油的馏程、辛烷值、实际胶质和硫醇硫的含量。
In order to meet the environmental protection requirements, it becomes a hot topic to research and develop new processes and catalysts of producing FCC gasoline with lower olefin content.
为了满足环保要求，研究开发生产低烯烃含量的FCC汽油的工艺和催化剂是当今的一个热点问题。
Lowering gasoline aromatics content reduced HC and co emission, but olefin reduction had a adverse effect on HC and co emission.
汽油中芳烃含量降低，排放的CO、HC降低；烯烃含量降低，对CO、HC排放有负面影响。
The hydroetherification process of catalytic cracking light gasoline is investigated for increasing octane number and decreasing the content of olefins of catalytic cracking gasoline.
研究了催化裂化轻汽油临氢醚化工艺，以降低催化裂化汽油的烯烃含量并提高辛烷值。
The olefin content in FCC gasoline can be reduced by etherification of light FCC gasoline, meeting the requirements of environmental regulations.
采用催化裂化轻汽油醚化工艺可减少催化裂化汽油的烯烃含量，满足环保法规对汽油质量的要求。
The content and distribution of sulfur and sulfide species in FCC gasoline produced by Shengli Petrochemical Factory are investigated.
对胜利石油化工总厂的FCC汽油中的硫含量、硫分布及硫化物的种类进行了分析。
For making the atmosphere quality better, sulfur content of gasoline product must be reduced.
为改善大气质量，就必须降低成品汽油的硫含量。
The content of naphthene, total paraffin, olefin and aromatics in FCC gasoline increased or decreased alternately with the change of space velocity.
环烷烃、总烷烃、烯烃和芳烃的含量随着空速的变化出现相互交叉的现象；
Sulfur content of gasoline reduces gradually along the riser.
汽油硫含量沿提升管高度增加而逐渐降低。
With the increase of environment pollution from tail gas of vehicles, decrease of sulfur content in gasoline becomes more and more important.
汽车尾气带来的环境污染日益严重受到人们的重视，如何降低汽油中的硫含量是一个热点问题。
The relationship between olefin content in gasoline and exhaust emission of gasoline engine is discussed.
讨论了汽油中的烯烃与发动机排放之间的关系。
Development direction of desulfurization of FCC gasoline is discussed according to the structure of gasoline product and feature of high content of sulfur in gasoline in general.
针对我国产品汽油组成和硫含量普遍偏高的特点，提出我国催化汽油脱硫技术开发的方向。
The second type of the S-mercaptan content in the stable gasoline decides the S-mercaptan content in the refined gasoline.
稳定汽油中的第二类硫醇硫含量决定了其精制汽油的硫醇硫含量。
The key to reducing olefin content in FCC gasoline is to increase the hydrogen transfer capability in FCC reaction to saturate the olefin in gasoline.
降低FCC汽油烯烃含量的关键是要增加FCC反应中的氢转移能力，以饱和汽油中的烯烃。
Well-tried function of DMC as an additive on gasoline, covering its octane number, oxygen content, calorific value, vapor pressure, distillation range, freezing point, solubility in water etc.
就碳酸二甲酯对汽油的调合辛烷值、氧含量、热值、蒸汽压、馏程、凝固点、溶水性等性质的影响进行了研究。实验表明，DMC作为汽油添加剂具有良好的前景。
To achieve the low sulfur gasoline, the sulfur content in FCC gasoline must be reduced.
若要实现汽油的低硫化，则必须降低FCC汽油中的硫含量。
The method greatly improves the octane value of the gasoline, and the olefin content in the upgrading gasoline is very low;
该方法大幅提高汽油的辛烷值且改质汽油中的烯烃含量很低；
The cracking additive has high cracking activity and liquid gas selectivity, and can reduce the content of sulfur in gasoline product.
该助剂具有较高的裂化活性和液化气选择性，同时能够降低汽油产品中硫含量。
FCC gasoline is one of the major blending components of domestic motor gasoline, in which the olefin content is over 40%.
催化裂化汽油是我国车用汽油的主要调合组分，其中含烯烃40 %以上。
FCC gasoline is one of the major blending components of domestic motor gasoline, in which the olefin content is over 40%.
催化裂化汽油是我国车用汽油的主要调合组分，其中含烯烃40 %以上。
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