系餾點 的英文怎麼說
中文拼音 [xìliùdiǎn]
系餾點
英文
picketing point-
A side stream is recycled to the external feed stream of the column through an equilibrator as an internal feed stream. the simulation results indicate effects on the characteristics of cryogenic distillation column. consideration is given to the behavior and characteristics of the set of ordinary differential equations
3 、分析了濃度極稀物系動態精餾模型的特點，建立了此類物系動態模型的求解策略，通過對模型中狀態變量的轉換，使原本剛性較強的微分方程組轉化為一非剛性的常微分方程組。Then, analytical work was carried out as follows : the ultimate analysis and physi - chemical analysis of the pyrolytic oil comprised a sketch of the fuel properties of the oil ; then, through the distillation analysis of the oil, the fraction composition of the " unrefined " oil was known. after that, a general knowledge of the aromaticity and saturation of the hydrocarbons in the oil was provided by the outcome of the ft - ir functional group analysis. also, from the analysis, the form of the polar functional groups and their distribution in different fractions of the oil were learned
文中首先對不同熱解溫度下熱解油產率進行分析討論，然後，針對熱解油品質進行了一系列分析：通過元素組成和理化特性的分析，對熱解油作為燃料特性有了一個大致了解；通過實沸點蒸餾分析，得到熱解油作為一種未提煉油的餾分分佈，並為后續熱解油餾分的細入分析提供了前提；通過對熱解全油和各窄餾分的ft - ir官能團分析，對熱解油的芳香性、不飽和性有了整體的了解，並且清楚了熱解油中的極性官能團存在型式及其在熱解油不同餾分中的分佈。Some of problems in distillation technology process are studied using excel, matlab and chemcad. they are distillation with simple balance, determining accurately the position of sensitive plates in distillation tower, distillation of multi - components, and crude distillation at steady state. this paper shows how to solve bubble & dew points for binary ideal system and five cases of flash by means of excel and analizes reducing pressure affects on phase equilibrium as an example of distillation and separation ethyl benzene & phenyl ethylene below atmosphere
基於excel 、 matlab和chemcad軟體，對蒸餾過程中的簡單平衡蒸餾、精餾塔靈敏板位置確定方法、多組分精餾等進行了數值計算與定量研究，對原油煉制常減壓塔進行了初步的穩態模擬，實現了用excel求解雙組分理想體系的泡、露點問題和閃蒸計算的五種情況，並分析了減壓對其相平衡的影響。Results of calculation indicate that the bubble & dew points may be reduced extremely, but the relative volatility rises slightly and the separation of them is affected hardly by decreasing pressure. and this article puts forward more reasonable modifying suggestions after analyzing numerically in detail the common method of determining the position of sensitive plate in distillation tower and finds out something unsatisfactory about it
計算結果表明，減壓可大大降低乙苯?苯乙烯物系的泡、露點，但相對揮發度增加甚微，對其分離的難易程度幾乎無影響;對常用求取精餾塔靈敏板位置的方法進行了詳盡的數值分析，對其不合理性提出了改進措施。The development of mass transfer in the system of vapor - liquid - liquid three - phase distillation from trays was introduced, the effects of the hydrodynamic conditions e. g. vapor velocity and ratio of liquid to vapor loading and physical properties of liquid phase, including surface tension, interfacial tension, viscosity or dispersion viscosity, density, relative volatility etc. and the volume ratio of oil to water on mass transfer were discussed systematically, the influence of the second liquid on mass transfer efficiency was also investigated, a gnat deal of viewpoints and suggestions having been put forward in this paper are significant important for optimizing design of distillation tower
摘要介紹了氣液液三相精餾塔板傳質性能研究的進展情況，討論了氣速、液氣比等操作條件，表面張力、界面張力、液體的粘度或分散粘度、密度和相對揮發度等物系性質以及油水體積比等多種參數對傳質效率的影響，探討了第二液相的存在對傳質的影響，文中的許多觀點獲和建議對于優化精餾塔的設計具有重要的指導意義。Combining with the knowledge of chemical engineering, some evolutionary functors were improved, and a set of special encoding method and solution strategy was put forward according to the characteristics of the complex distillation system
針對復雜精餾系統特點並結合化工領域知識，對遺傳運算元進行了改進，給出了一套獨特的編碼方法和求解策略。Module - oriented automatic differentiation ( mad ), a new ad approach that can employ current differentiation algorithms flexibly to differentiate each module of the process model, is presented to achieve more efficient jacobian evaluation in optimization
面向模塊的自動微分可以更加靈活和充分地利用模型的結構特點，這個優勢在精餾塔穩態優化和縮聚反應釜動態優化這兩個典型的工業過程系統優化問題中得到了充分的體現。分享友人