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裂化
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  cracking
     Study on Experiment and Theory of PDMS/PS Hollow Fiber Composite Membrane for Hydrogen Recovery from Catalytic Cracking Dry Gas
     PDMS/PS中空纤维复合膜回收催化裂化干气中氢气的实验与理论研究
短句来源
     PERFORMANCE TEST OF META-Y-3A MOLECULAR SIEVE CRACKING CATALYST
     偏Y-3A分子筛裂化催化剂工业使用试验
短句来源
     COMMERCIAL TEST OF COGELLED Y-TYPE ZEOLITE CRACKING CATALYST
     共交Y型分子筛裂化催化剂工业使用试验
短句来源
     PREPRODUCTION OF Y-TYPE ZEOLITE CRACKING CATALYST AND ITS APPLICATION IN REFINERIES
     共Y分子筛裂化催化剂的研制与工业应用
短句来源
     A NEW SEMISYNTHETIC ZEOLITE CRACKING CATALYST
     一种新型半人造分子筛裂化催化剂的特性
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  cracked
     Secondly, with respect to the color compounds in catalytically cracked diesel oil, efforts has been devoted to enrich and separate them in appropriate ways. Liquid chromatography and mass spectrum(LC/MS), gas phase chromatography and mass spectrum(GC/MS) have been used to identify the structure of the color compounds.
     然后确定合适的分离方法对催化裂化柴油中的显色物质进行富集、分离,用液相色谱与质谱(LC/MS)、气相色谱与质谱(GC/MS)联用技术分析、鉴定萃取相和油相中主要显色物质的类别、结构,对比加氢精制柴油和催化裂化柴油存在的非烃类物质的结构,提出了可能引起催化裂化柴油变色的主要物质。
短句来源
     DETERMINATION OF OLEFIN CONTENTS IN CRACKED HEAVY OILS BY RAPID TLC/FID METHOD
     用TLC/FID法快速测定裂化重质油中的烯烃含量
短句来源
     The components in the fluid catalytically cracked (FCC)gasoline were detected by capillary column gas chromatography-mass spectrometry(GC/MS).
     应用毛细管柱气相色谱-质谱(GC/MS)分析催化裂化(FCC)汽油中的组成。
短句来源
     Orthogonal experimental research on catalytic upgrading of cat cracked gasoline in presence of compounded catalyst
     复合催化剂上催化裂化汽油催化改质的正交实验研究
短句来源
     (Ⅱ)The intermediate isomers formed on cata- lyst 12-46 are unstable and are easily adsorbed and cracked on catalyst 3762;
     (2)在12-46催化剂上生成的中间产物——异构化合物很不稳定,易为3762催化剂所吸附和裂化;
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  “裂化”译为未确定词的双语例句
     INFLUENCE OF HYDROGEN PRESSURE ON ISOMERIZATION AND HYDROCRACKING REACTION OF N-ALKANES
     氢压对烷烃异构化与裂化反应的不同影响
短句来源
     INVESTIGATION OF THE LUMPED KINETIC MODEL FOR CATALYTIC CRA CKING Ⅱ.A PRIOR SIMULATION FOR EXPERIMENTAL PLANNING
     催化裂化集总动力学模型的研究 Ⅱ.实验方案的计算机事前模拟
短句来源
     MATHEMATICAL SIMULATION OF CATALYSTS BEHAVIOR AND REACTION IN FCC RISER
     催化裂化提升管反应器中催化剂运动和反应数学模型的研究
短句来源
     ECONOMY OF SLURRY OIL WITHDRAWAL IN A FCC UNIT
     催化裂化甩油浆的技术经济分析
短句来源
     DESIGN AND APPLICATION OF FCC FLUE GAS POWER RECOVERY UNIT
     催化裂化再生烟气直接发电装置的设计与应用
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  cracking
In addition, thermal cracking, thermal oxidization, carbonization and cyclization of organic substances on the surface of brake block can make the friction surface produce pores or cracks, thus fatigue wear occurs.
      
Study on reformulation of fluid catalytic cracking gasoline and increasing production of light olefins
      
Formation of coke in thermal cracking of jet fuel under supercritical conditions
      
Continuous-flow reactor experiments were carried out to study coke formation from thermal cracking of home-made jet fuel RP-3 under supercritical conditions.
      
The starting cracking temperature of RP-3 fuel was determined to be 471.8°C by differential scanning calorimetry (DSC).
      
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  cracked
The forward problem is to solve the natural frequencies through a cracked structural model and the inverse problem is to quantitatively determine the crack parameters using the experimental testing frequencies.
      
Dynamics analysis of a cracked dual-disk over-hung rotor-bearing system
      
At the early stage of maturation of the phloem ganglion, most of the phloem ganglion cells' vacuoles cracked, and the cytoplastic Ca2+ content increased in large number.
      
Solution of filtration problems in cracked and porous media by integral methods
      
The integral-equation methods first proposed for solving filtration problems by Barenblatt [1] were subsequently used to good effect when studying cracked and porous media [2, 3].
      
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利用水煤气合成汽油中的七碳烷、烯烃馏份(90—100°实沸沸程)为原料,在装有50毫升的氧化铬/氧化铝催化剂的固定床内进行催化芳烃化反应,发现在所考察的试验范围内,芳烃生成率ω,进料的总转化率 y 及气体的生成率 z 与空间流速 V 的关系均可分别用著名的方程式来关连.本文提供了这些关连式的内容.同时,发现积聚在催化剂表面的焦的生成速度可以采用 Villers-Fisher 所提出的论据来关连.本文也提供了该关连式的内容.根据试验的初步结果,我们有理由相信七碳烷、烯烃在催化芳煤化时生成焦的途径,可能是和 Voorhies 曾经考察过的催化裂化时生成焦的途径及 Watson 等所曾经考察过的环己烷催化脱氢时的焦生成途径相同.

A modified method is described for the analysis of straight run gasoline and Fisher-Tropsch gasoline with the aid of calibration curves.This method can be satis- factorily applied to samples with aromatics or olefin content below 15% by volume. Carrier displacement technique is recommended for the separation of saturated hydrocarbon and aromatics at low temperatures using normal pentene as carrier. This method is more efficient than the conventional pentane elution technique. A method for the analysis of ordinary...

A modified method is described for the analysis of straight run gasoline and Fisher-Tropsch gasoline with the aid of calibration curves.This method can be satis- factorily applied to samples with aromatics or olefin content below 15% by volume. Carrier displacement technique is recommended for the separation of saturated hydrocarbon and aromatics at low temperatures using normal pentene as carrier. This method is more efficient than the conventional pentane elution technique. A method for the analysis of ordinary cracked gasoline is also suggested.

本文介绍用新的校正曲线进行烷-芳烃二元系(直馏汽油)和烷-烯二元系(费托合成汽油)的分析.误差分别为0.2%与0.5%(体积).用戊烯为夹带剂可以有效地将烷-芳烃混合物分离.试验应在较低温度下进行以避免烯的聚合.根据所提出的经验公式,可以进行与一般低芳烃含量的裂化汽油组成相近的烷、烯、芳烃三元系的分析.误差在1%以下.

1.The principal reactions of methylcyclohexane,methylcyclopentane and heptane on platinum-fluorine-alumina catalyst of various platinum and hydrogen fluoride contents(Pt,0~1%;HF,0~5%)have been investigated under fixed reaction conditions:temperature,472℃,pressure,20 atm.,LHSV,3,H_2:feed (mol.ratio),6:1.The main results of present investigation are found to be in good agreement with the reaction machanism and the dual function of“houdri- forming” catalyst suggested by Mills and Heinemann.Platinum-fluorine- alumina...

1.The principal reactions of methylcyclohexane,methylcyclopentane and heptane on platinum-fluorine-alumina catalyst of various platinum and hydrogen fluoride contents(Pt,0~1%;HF,0~5%)have been investigated under fixed reaction conditions:temperature,472℃,pressure,20 atm.,LHSV,3,H_2:feed (mol.ratio),6:1.The main results of present investigation are found to be in good agreement with the reaction machanism and the dual function of“houdri- forming” catalyst suggested by Mills and Heinemann.Platinum-fluorine- alumina catalyst consists of two important kinds of active sites,i.e.the dehy- drogenation(or metal)site and the isomerization(or acid)site;the former is derived from platinum and the latter from hydrogen fluoride.Dehydroisomeri- zation of methylcyclopentane and isomerization of n-heptane can proceed effec- tively only upon the dual site catalyst. 2.With platinum content fixed at 0.3%,the following results for the effect of hydrogen fluoride on the reactions of methylcyclopentane and n-heptane are obtained:for HF content below 1%,benzene yield of methylcyclopentane increases by increasing hydrogen fluoride content,for HF content greater than 1%,no further appreciable influence is observed.Isomerization of n-heptane is easier than dehydroisomerization of methylcyclopentane,so that catalyst of 0.2% HF is very efficient for isomerization of n-heptane.The major effect of hydrogen fluoride in excess of 0.2% is to accelerate hydrocracking reaction and thereby decrease liquid yield remarkably.A short discussion for these experimental re- sults is presented with the use of the recent information published by Wēbb, which shows how the surface acid strength of alumina is influenced by vary- ing the content of hydrogen fluoride.

铂-氟氢酸-氧化铝催化剂具有两种主要的活性中心;一种是由铂产生的脱氢中心,一种是由氟氢酸产生的异构化中心.甲基环己烷、甲基环戊烷、正庚烷在铂-氟氢酸-氧化铝催化剂上的主要反应结果符合于 Mills-Heinemann 提出的反应机理.催化剂的平均孔径随氟氢酸的含量增加而变大,孔径变大可能是正庚烷的加氢裂化反应随氟氢酸含量增加而显著加速的原因.

 
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