积炭是引起催化剂失活的主要原因。
气门杆间隙过大会加速气门的积炭。
其主要原因是发动机的磨损和燃烧室的积炭造成的。
The main cause is the engine wear and the combustion chamber caused by carbon.
发动机长时间低速运行，可能导致火花塞积炭严重。
If the engine is running in an idle speed too long, spark plug might be serious carbonized.
积炭的形成部位与酸中心在晶内外的分布关系密切。
The stronger the acid sites are the easier coke deposition will be and more acid sites means more coking locations.
发动机长时间低速运行，可能导致火花塞积炭严重。
Running at low speed for too long might carbonize the spark plug.
本实用新型可以防止积炭堵塞，使液料的燃烧充分。
The utility model can prevent the deposited carbon from clogging, and enables the liquid fuel to be fully burned.
该清洗剂对各种材料零部件积炭均有良好的洗涤效果。
The cleaning agent has excellent washing effect on deposited carbon on parts made of various materials.
很多汽车出现不同情况的积炭过多、抖动、熄火等现象。
Many of the cars appeared in different situations, coke excessive jitter and flameout phenomenon.
失活的催化剂程序升温烧焦表明催化剂上的积炭中含有氢。
Temperature programmed coke-burning shows that the coke contains hydrogen.
高温峰积炭，其烧炭活化能较低温峰积炭的烧炭活化能要高。
The burning-off energy of coke burnt-offat high temperature is higher than that of coke burnt-off at low temperature.
造成汽车抖动最常见的原因就是节气门过脏或喷油嘴积炭过多。
The most common causes of automobile shake is too dirty or nozzle solar term door too much coke.
当引擎积炭完全消除以后，可以容易地注意到排放量的显著减少。
This is especially noticeable in the area of the emissions upon complete removal of the deposits.
用氨程序升温脱附法（TPD）研究了它们在积炭前后的酸性变化。
The acid proper-ties of its coking in front and behind by temperature programmed desorption of ammonia(TPD).
催化剂积炭速率慢，具有良好的持氯能力、水热稳定性和结构稳定性。
The catalyst was slow in carbon deposition and good in chlorine retention, high in hydrothermal stability and excellent in structural stability.
在超临界条件下，超临界流体能够抑制催化剂积炭，延长催化剂寿命。
In supercritical reaction, coke deposition can be reduced by supercritical fluid and life of catalyst is prolonged.
二氧化碳的作用是消除积炭以及与氢反应以提高乙烷的脱氢反应转化率。
The function of carbon dioxide is to remove coke and react with hydrogen to accelerate dehydrogenation of ethane.
介绍了贵金属催化剂与镍基催化剂在重整活性和抗积炭能力方面的差异。
Differences in catalytic activity and ability to resist coking between noble metal based catalyst and Ni based catalyst are described.
所制得的水基除积炭清洗剂常温使用、性能优良、工艺简单、成本低廉。
The detergent is used at ambient temperature. It is easy to wake with excellent cleaning effect and low cost.
制得的成本低廉、去污力强、去积炭速度快、效果好的内燃机积炭清洗剂。
The prepared deposited carbon cleaning agent for the internal-combustion engine has the advantages of low cost, high detergency, quick deposited carbon removal and good effect.
它具有良好的氧化稳定性，不容易生成积炭，使用寿命超过8000个小时。
The excellent oxidative stability and low deposit formation tendency allows for service lives in excess of 8000 hours.
再生后催化剂活性与新鲜催化剂相差无几，说明主要是由于积炭而导致失活。
Little difference in the activity was observed before and after regeneration, which means that coke formation was the major reason of catalyst deactivation.
本文以元素分析的碳含量为标准，用esr方法研究了催化裂化催化剂的积炭。
Coke formed on cracking catalysts was investigated by ESR technique and elemental analysis.
积炭位置越靠近催化剂外表面，积炭的相对增长速率越小，催化剂的活性越低。
When the coked sites mainly located near the outer surface of the catalyst, and the relative coke growth rate was low, the catalyst showed a relative lower activity.
第一和第二反应器中催化剂积炭量明显增高是重整进料携带重组分的特征之一。
The obvious coke increase on the catalysts in the 1 st and 2 nd reactors was one of the characteristics of feedstock having heavy com...
通过对压缩机积炭现象的形成、危害的分析，结合生产实践提出了一些预防措施。
Through to the compressor carbon deposit phenomenon formation, the harm analysis, in coor with progress of production practice proposed some preventive measures.
马孚是多种成份的燃烧催化剂，用于促进清除引擎积炭、尤其是燃烧室内的积炭。
MA FU contains a multi component combustion catalyst, which promotes the removal of engine deposits especially those in the combustion chamber.
催化剂因积炭失活后，可通过器内烧焦再生使催化剂活性得到恢复，降低了生产成本。
After deactivation due to coking, catalyst could be regenerated by in-situ regeneration so as to reduce producing cost.
含噻吩原料加氢裂化生成的积炭，存在于不同孔径的孔中，在催化剂表面形成少量机械孔。
The coke deposited due to thiophene impenetrated into all the pores and some of them could form mechanical pore on catalyst surface.
模拟结果表明，在一定的积炭量下，催化剂的活性主要与积炭的位置及焦炭相对增长速率有关。
The simulation results showed that under the same coke level, the activity of the coked catalyst depended on the location of the coked sites and the relative coke growth rate.
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