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mixed xylenes
相关语句
  混合二甲苯
     REVAMPING OF ETHYL BENZENE TOWER IN MIXED XYLENES SEPARATION UNIT
     混合二甲苯分离装置乙苯分离系统的改造
短句来源
     This agent has been commercially used in the dechlorination of mixed xylenes and hydrogen feedstocks with good results.
     T406型脱氯剂已工业应用于混合二甲苯和氢原料的脱氯,使用效果良好。
短句来源
  “mixed xylenes”译为未确定词的双语例句
     Present Situation and Prospect of the Separation Techniques for Mixed Xylenes
     二甲苯异构体分离技术的现状和发展前景
短句来源
     Using a SE-30 capillary column,it is able to achieve in 26minutes quantitative determination for 18 benzene carboxylic acids and estersproduced in the process of liquid phase air-oxidation of mixed xylenes.
     使用 SE-30毛细管柱在26分钟内对二甲苯合并空气液相氧化生产对苯二甲酸的生产过程中所产生的十八个苯羧酸及苯羧酸酯定性、定量。
短句来源
  相似匹配句对
     Present Situation and Prospect of the Separation Techniques for Mixed Xylenes
     二甲苯异构体分离技术的现状和发展前景
短句来源
     type C: mixed.
     C型:混合型。
短句来源
     On Mixed Economy
     论混合经济
短句来源
     REVAMPING OF ETHYL BENZENE TOWER IN MIXED XYLENES SEPARATION UNIT
     混合二甲苯分离装置乙苯分离系统的改造
短句来源
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  mixed xylenes
This catalytic process produced benzene and toluene with high purity corresponding to chemical grade while giving mixed xylenes with reduced ethylbenzene.
      
Isomerization of mixed xylenes and ethylbenzene on IK-78 catalyst
      
The regioselective benzoylation of pure xylene isomers and also of mixed xylenes was studied with benzoyl chloride over Cs2.5H0.5PW12O40 supported on K-10 montmorillonite clay as the catalyst.
      
It is possible to prepare these ketones selectively and economically from commercial mixed xylenes under different sets of conditions because of the preferential reactivities of xylene isomers in the presence of solid acid catalysts.
      
Aerobic degradation of a mixture of benzene, toluene, ethylbenzene and the mixed xylenes (BTEX) by a mixed bacterial population was studied in a continuously fed, completely mixed bioreactor in the presence of powdered activated carbon (PAC).
      
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Eight kinds of 1- β-hydroxy ethyl)-2-alkyl imidazolines (HEAI) are synthe sized with various natural fatty acids and N- (β-hydroxy-ethyl)-ethylene dia-mine (HEED) With the aid of infrared, ultra-violet and mass spectra, the struc tures of these HEAIs are characterized. Two synthetic methods of producing HEAI are tried: one, by condensation to remove water azeotropically with the mixed xylenes; while the other, under vacuum. The factors involving mole ratios (HEEI)/RCOOH)...

Eight kinds of 1- β-hydroxy ethyl)-2-alkyl imidazolines (HEAI) are synthe sized with various natural fatty acids and N- (β-hydroxy-ethyl)-ethylene dia-mine (HEED) With the aid of infrared, ultra-violet and mass spectra, the struc tures of these HEAIs are characterized. Two synthetic methods of producing HEAI are tried: one, by condensation to remove water azeotropically with the mixed xylenes; while the other, under vacuum. The factors involving mole ratios (HEEI)/RCOOH) , reaction temperatures and time on the yields of HEAI are studied. It is found that the imidazoline ring is not always stable in aque-ous solutions. In alkali medium, the ring is very easy to open, producing linear amides. The dependence on percentages of ring opening with the pH values are in vestigated.The mechanism of imidazoline ring opening is also suggested.

以不同的高级脂肪酸和N-(β-羟乙基)一乙二胺(HEED)为原料合成了八 种烷基咪唑啉中间体。通过IR,MS等手段鉴定了这些中间体的结构,讨论了反 应条件对烷基咪唑啉收率的影响。定量研究了烷基咪唑啉环在水介质中的稳定性, 证明环的稳定性与介质的pH值及放置时间有关。探讨了水解开环反应的机理。

A gas chromatographic method is described for determining benzene carboxy-lic acids and esters.Using a SE-30 capillary column,it is able to achieve in 26minutes quantitative determination for 18 benzene carboxylic acids and estersproduced in the process of liquid phase air-oxidation of mixed xylenes.Themethod is reliable and can be used for controlling production.

讨论了苯羧酸及苯羧酸酯混合物的气相色谱分析方法。使用 SE-30毛细管柱在26分钟内对二甲苯合并空气液相氧化生产对苯二甲酸的生产过程中所产生的十八个苯羧酸及苯羧酸酯定性、定量。该分析方法适用于转盘氧化法生产二甲酯的整个生产过程产物及成品分析,方法可靠、便于推广。

The development, performance test and commercial use of T406 type new dechlorination agent werereported in this article. The tests in comparison to similar well-known dechlorination agents, both athome and abroad, and industrial use showed that the dechlorination agent, developed and manufacturedby the Northwest Research institute of Chemical industry, is featured by high crushing strength, purification efficiency and dechlorination capacity.It can be used in ambient-temperature dechlorination ofboth gasous...

The development, performance test and commercial use of T406 type new dechlorination agent werereported in this article. The tests in comparison to similar well-known dechlorination agents, both athome and abroad, and industrial use showed that the dechlorination agent, developed and manufacturedby the Northwest Research institute of Chemical industry, is featured by high crushing strength, purification efficiency and dechlorination capacity.It can be used in ambient-temperature dechlorination ofboth gasous and liquid feedstocks. It exhibits dechlorination capacity as high as over 18 wt% even atlower temperature (4C) with off-gas chloride concentration around 0.2ppm. It can also remove sulfursimultaneously. This agent has been commercially used in the dechlorination of mixed xylenes and hydrogen feedstocks with good results.

报导了T406型脱氯剂的研制、性能试验和工厂运行结果。与国内外常见同类脱氯剂的对比试验及工业应用表明,由化工部西北化工研究院开发研制的这一新型脱氯剂具有抗压碎强度高,净化度高,氯容量高的特点,可以在常温下用于气相和液相原料中氯化物的脱除。即使在低温(4℃)下,净化后原料中氯降至0.2ppm左右的情况下氯容量仍高达18wt%以上。该脱氯剂还能同时脱除原料中的硫。T406型脱氯剂已工业应用于混合二甲苯和氢原料的脱氯,使用效果良好。

 
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