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塔顶温度
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  tower top temperature
     The optimal conditions of adsorption were obtained when theoretical plate number was equal to 7, the tower top temperature 47.8℃, the bottom temperature 51.8℃ and the scrubbing liquid was raw methanol (8mol/h).
     吸收塔理论塔板数7,塔顶温度为47.8℃,塔釜温度为51.8℃,洗涤液为原料甲醇(8mol/hr);
短句来源
  top temperature
     The optimal conditions of adsorption were obtained when theoretical plate number was equal to 7, the tower top temperature 47.8℃, the bottom temperature 51.8℃ and the scrubbing liquid was raw methanol (8mol/h).
     吸收塔理论塔板数7,塔顶温度为47.8℃,塔釜温度为51.8℃,洗涤液为原料甲醇(8mol/hr);
短句来源
     The experimental result shows that,the extract oil can be used as solvent when it is only used as the filled oak oil,a fitting operation condition that the cycle oil is well extracted is at a solvent-oil ratio of 1.5(weight),a top temperature of the extraction tower of about 70℃,the bottom temperature of under 50℃,not adding reverse extraction solvent.
     实验结果表明:若抽出油仅作为橡胶填充油,则以抽出液为溶剂,抽提回炼油的适宜操作条件为:剂油比1.5,抽提塔顶温度70℃左右、塔底温度不高于50℃,不加反抽提剂。
短句来源
     The experimental result showed that,when the extract oil was used as the filled oak oil and the pure furfural was used as solvent, the fitting operation conditions that the cycle oil was well extracted were carried out at a solvent-oil ratio of 0.6(weight),a bottom temperature range of the extraction tower of 40~50℃, the top temperature of about 60℃.
     实验结果表明 :若抽出油仅作为橡胶填充油 ,则以纯糠醛为溶剂抽提回炼油适宜的操作条件为 :剂油比0 .6 ,抽提塔塔底温度 4 0~ 5 0℃、塔顶温度 6 0℃左右。
短句来源
     The pan oil loop can reduce top temperature and recover heat energy.
     热油循环系统可以降低塔顶温度回收热量,节能显著。
短句来源
     Correlations of DAO yield vs. top temperature of extractor, DAO yield vs. viscosity, DAO yield vs. residue carbon and DAO yield vs. Ni content are obtained for known solvent and solvent/oil ratio.
     还关联出一定溶剂和溶剂比时,脱沥青油收率与抽提塔顶温度、脱沥青油粘度与收率、残炭与收率和镍含量与收率的经验式。
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  “塔顶温度”译为未确定词的双语例句
     In the second distillation column the pressure was 8bar, and the top and bottom temperature were 40.3℃ and 143.8℃, respectively.
     精馏塔的压力为8bar,塔顶温度为40.3℃,塔釜温度为143.8℃,热负荷为446KW。
短句来源
     The results showed that through controlling reacter temperature at 485 ℃,mass ratio of catalyst and oil 5.5~7.0,the activitly of catalyst 70%,the volumn fraction of gasoline olefin decreased from 43.2% to less than 35%.
     结果表明:控制反应温度为 485℃,剂油体积比为 5. 5~7. 0,催化剂活性约 70%,汽油馏程干点为 205℃,稳定塔塔顶温度为 59℃、塔底温度为 180℃时,可使该装置汽油烯烃体积分数由 43. 2%下降至 35%左右。
短句来源
     Purity of n -butyl chloride by lefting the water was higher than 99 .5% and the yield reached 85%.
     塔顶温度67~69℃,经分水后,获得的1 氯丁烷质量分数≥99 5%,反应收率≥85%。
短句来源
     The operation condition is that the pressure of rectification tower is 1.33 kPa,the temperature is 90~95 ℃,the tempeture at the top of the tower is 65~68 ℃,the theoretical tower tray number is 54.
     操作条件是精馏塔的压力为 1.3 3kPa ,温度为 90~ 95℃ ,塔顶温度为 65~ 68℃ ,理论塔板数为 5 4。
短句来源
     Catechol decreased by 12.6% if the dehydrated products were redistilled at 114 ℃ of temperature at the top of tower under 2.4 kPa.
     在塔顶温度114℃,塔压2.4 kPa操作条件下,将精馏得到的苯酚和邻苯二酚倒入塔底残液中再次蒸馏,邻苯二酚损失12.6%,与塔底液增加量相当。
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  top temperature
Geological and geophysical data suggest that the heat source is related to a cylindrical magma body with a radius of 200±100 m and a top temperature of 850±100°C at a depth of 4±1 km.
      
From the satellite data, the clouds can be classified into cumuliform, stratiform and cirrus classes and then into further sub-classes by cloud top temperature.
      
Another requirement for the occurrence of precipitation is a relative minimum of cloud top temperature and vorticity.
      
Simultaneous observations of the albedo, longwave radiation, absorbed shortwave radiation, and net radiation at the top of the atmosphere (TOA), and the total cloud fraction and cloud-top temperature are considered.
      
It was observed that the rotation in the major structural cloud features (as seen from the cloud-top temperature maps) associated with these cyclones in the Bay of Bengal is followed with a change in direction of their movement.
      
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Solvent deasphalting pilot plant experimental data with 13 Chinese vacuum residues as feed- stocks have been collected and treated. Linear regression of density (y) of deasphalt oil (DAO) with DAO yield (x)under various solvents and solvent/oil ratios yields the empirical expression: y=0.8593+0.0008x. Correlations of DAO yield vs. top temperature of extractor, DAO yield vs. viscosity, DAO yield vs. residue carbon and DAO yield vs. Ni content are obtained for known solvent and solvent/oil ratio. It is found that...

Solvent deasphalting pilot plant experimental data with 13 Chinese vacuum residues as feed- stocks have been collected and treated. Linear regression of density (y) of deasphalt oil (DAO) with DAO yield (x)under various solvents and solvent/oil ratios yields the empirical expression: y=0.8593+0.0008x. Correlations of DAO yield vs. top temperature of extractor, DAO yield vs. viscosity, DAO yield vs. residue carbon and DAO yield vs. Ni content are obtained for known solvent and solvent/oil ratio. It is found that the log of percent removals of carbon residue and Ni content vs. DAO yield are in general linear functions. Average relative errors of the above correlationsare less than 2%.

在搜集、整理和归纳13种国产减压渣油溶剂脱沥青中型实验数据基础上,利用最小二乘法,关联出不同溶剂和溶剂比时,脱沥青油密度与收率的经验式y(密度)=0.8593+0.0008x(收率)。还关联出一定溶剂和溶剂比时,脱沥青油收率与抽提塔顶温度、脱沥青油粘度与收率、残炭与收率和镍含量与收率的经验式。此外,提出了脱碳率对数和脱镍率对数与收率的关联方法。以上各关联式平均相对误差一般不超过2%。

The major process parameters of demethanizer in the recovery section of FCC unit are optimized and analysed by using the chemical simulator process. Based on the enormous plate-to -plate calculation, a new concept differing from the traditional conclusion is put forward, from which it is believed that in certain range of pressure and temperature, the higher the temperature at the top of demethanizer, the less the loss of ethylene. By analyzing and comparing the calculation data, the practical ways are proposed...

The major process parameters of demethanizer in the recovery section of FCC unit are optimized and analysed by using the chemical simulator process. Based on the enormous plate-to -plate calculation, a new concept differing from the traditional conclusion is put forward, from which it is believed that in certain range of pressure and temperature, the higher the temperature at the top of demethanizer, the less the loss of ethylene. By analyzing and comparing the calculation data, the practical ways are proposed for saving energy, improving ethylene yield and realizing the optimal integration of process parameters of demethanizer. The results obtained may be refered as a valuable reference to the existing plant and green-site plant.

对催化裂解装置裂解气分离回收单元的中冷油吸收脱甲烷塔的主要工艺参数应用大型化工软件PROCESS进行了优化和全面分析。在大量逐板计算的基础上,提出了不同于传统观念的新论断:在一定压力温度范围内,脱甲烷塔塔顶温度愈高,乙烯损失愈小。通过详尽的数据和分析比较,为节省能耗、增加乙烯收率、实现脱甲烷塔各工艺参数的最优组合指出了具体的途径。本文对已有类似装置的生产及新装置的设计有一定参考价值。

Technical transformation of gasoline fractionators in ethylene plants is reviewed and discussed in this paper A techno-economic analysis for the transformation is also presented. Replacing the large trays with packing is beneficial and feasible, but the inner structure of packing tower needs to be improved further, especially vapour and liquid distributors. Owing to the scale-up effect of large packing tower, polymerization and fouling occur generally in the tower. Addition of antifoulant and optimization of...

Technical transformation of gasoline fractionators in ethylene plants is reviewed and discussed in this paper A techno-economic analysis for the transformation is also presented. Replacing the large trays with packing is beneficial and feasible, but the inner structure of packing tower needs to be improved further, especially vapour and liquid distributors. Owing to the scale-up effect of large packing tower, polymerization and fouling occur generally in the tower. Addition of antifoulant and optimization of operation to ensure steady operation for more than two years are required. The pan oil loop can reduce top temperature and recover heat energy.

对乙烯装置汽油分馏塔的技术改造进行探讨,并进行技术经济分析,认为把大型板式塔改为填料塔是可行的,效益十分显著;但填料塔内件的配制有待完善,气液分布器是该塔改造的关键;由于大型填料塔存在着放大效应,物料在汽油分馏塔内聚合结垢是一普遍问题;需要往塔内注入阻聚剂以保证塔平稳运行在两年以上,而且,也要优化生产操作工况;热油循环系统可以降低塔顶温度回收热量,节能显著。

 
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