phase of distillation 中文意思是什麼

phase of distillation 解釋
蒸餾階段
  • phase : n 1 形勢，局面，狀態；階級。2 方面，側面。3 【天文學】（月等的）變相，盈虧；【物、天】相，周相，...
  • of : OF ＝Old French 古法語。
  • distillation : n. 1. 蒸餾（作用）；蒸餾法。2. 蒸餾液；蒸餾物。3. 精華，精萃。
  1. The optimization results show that the effective interfacial area hi three - phase distillation is much bigger than the prediction of correlation when the operation condition is above the loading point, while no such phenomena are found when the operation condition is below the loading point. 5. the experiments reveal that almost 21 % reduction in the

    5 .實驗結果表明三相精餾過程在載點之前的分離效率比兩相精餾過程的分離效率低21 % ，而在載點和泛點之間，三相精餾過程的分離效率則比兩相精餾過程的分離效率高了近51 % 。
  2. The azeotropic distillation of the system acetic acid - water - azeotropic agent ( isopropyl acetate and butyl acetate ) is simulated. due to the non - ideal behavior, nrtl - hoc and uniquac - hoc model is used to depict vapor - liquid phase equilibrium behavior of this system. concerning the liquid in the decanter, the stability is checked by tangent plane stability analysis, and the initialization of phase splitting calculation is produced. a good estimate of the phase fration is gotten by successive substitution with newton ' s method, and every component of two phase is gotten by mass equilibrium equation. finally, the solution of this equation is produced with successive substitution calcultion. the naphtali - sandholm method is used to simulation of azeotropic distillation. by virtue of this combined calculation method, the simulation is begun with operational data as basical data. the results of simulation accord with the operating data, which proved that the combined calculation method is credible

    該體系具有高度非理想性，氣液相平衡模型採用nrtl - hoc和uniquac - hoc模型，採用切平面判據法對進入分層器中的液相進行液相穩定性測試，提供液液相分離計算的初值，再結合牛頓拉夫森迭代法運算求得相分割系數，根據物料衡算求出各相組成，循環迭代可求得分層各組分數據，共沸精餾模擬計算採用那夫塔列-山德荷姆全變量迭代演算法。
  3. Firstly, based on the present research all over the world, a 3d quasi - single phase model is built together with k - equations. the special feature of this model is taking account of the influence of interaction between liquid and gas, that is to say, the influence of interphase drag force, lifting force perpendicular to the relative velocity, virtual mass force and gas or liquid volume fraction in the fluid field have been considered. a 3d two - fluid model is also built in order to describe more accurately the fluid flow on distillation trays by comparing the computational results of quasi - single phase mathematical model with of two - fluid mathematical model

    本文在國內外已有的研究基礎上，首先建立了以k - （封閉模型為基礎的三維擬單相流模型，該模型的特點在於充分考慮了氣液兩相間相互作用的影響，即計入了相間曳力、橫向升力、虛擬質量力和氣、液相含率對流場的影響；並建立了塔板三維雙流體模型，主要目的是通過對比擬單相流數學模型、雙流體數學模型的計算結果，建立能夠準確描述塔板上流體流動的數學模型。
  4. Basing on the practical experience and processing principle, the optimization of producing process, in which the butyl alcohol is abstracted from the water phase by the azeotropic distillation of the partly and mutually dissolved, is studied in this paper by utilizing the properties of the azeotropic distillation of the partly and mutually dissolved system of butyl alcohol and water, from the some questions such as rearranging of the equipments, dissolving with sodium hydroxide, treating of the wasted water, separating water and so on

    摘要結合實踐經驗和工藝原理，利用丁醇和水組成的部分互溶系統的共沸特性，對從青霉素類結晶母液中提純丁醇的生產工藝進行了分析研究，從設備布局、堿洗、廢液處理和分水滯后等方面進行了優化處理。
  5. 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。
  6. 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。
  7. A process approaching 3 - and 4 - chlorophthalic anhydride in high purity via chloriation of o - xylene, oxidation of monochloro - o - xylene by air in gas phase, and separation of 3 - and 4 - chlorophthalic anhydride afterwards by distillation is described

    摘要介紹由鄰二甲苯氯代，再經空氣氧化及異構體分離合成氯代苯酐中試規模的合成路線。
  8. Secondly, for the first time, by volume average concept and reynolds time - average method, a 3d quasi - single phase mass transfer model of distillation tray is deduced by considering the effects of velocity fluctuation, concentration fluctuation and volume fraction of gas and liquid on mass transfer. a source item sc for interphase mass transfer is considered. by applying conventional method of estimating the interphase mass transfer coefficient, a formula for sc is obtained

    其次，採用體平均概念、雷諾時均化方法結合塔板氣液相互作用的實際情況首次推導了考慮速度、濃度脈動項和氣、液相含率影響的塔板三維擬單相流湍流傳質模型，源相中考慮了氣液相間傳質項sc ，並運用化工中關于相間傳質系數計算的理論，推導了sc的表達式。
  9. Abstract : study is made of recovery of organic reagents during the preparation of ultrafine powder by metal alcoxides hydrolysis. the phase diagrams of isopropanol - benzene system and isopropanol - benzene - water system have been plotted, based on which, isopropanol and benzene can be recovered and recirculated by distillation - rectification process. the recovery and reused rate of alcohol and benzene are above 75 %. so both the environmental pollution and cost of ultrfine powder are reduced

    文摘:對醇鹽水解法制備超細粉末過程中有機試劑的回收進行了研究，繪制了異丙醇-苯的二元相圖和異丙醇-苯-水的三元相圖，在此基礎上採用蒸餾-精餾的方法對制備體系中的異丙醇和苯進行回收，將有機試劑循環使用，使醇和苯的回收利用率達75 %以上，因而減少了環境污染，並降低了粉末成本。
  10. 6 c is contrast to the literature data. the lle data of the system measured at 40 c, which is correlated in virtue of nrtl or uniquac equation. the correlated parameters are used to the simulation of azeotropic distillation process. in addition, the vle data of the system acetic acid - water - n - butyl acetate at 1 atm from literature are correlated by virtue of nrtl - hoc and uniquac - hoc model, and the parameters are also used to azeotropic distillation simulation. by tint of a kind of computer language matlab, the binary parameters is correlated, stability of original liquid is checked, liquid - phase splitting calculation and simulation of heterogeneous azeotropic distillation are performed

    自製了液液平衡釜，實驗測得24 . 6時乙酸-水-乙酸異丙酯液液相平衡數據與文獻數據吻合，驗證了平衡釜的可靠性，測定了40時此體系的液液相平衡數據，對40實驗數據進行了uniquac方程和nrtl方程參數的擬合；利用uniquac - hoc模型和nrtl - hoc模型，對乙酸-水-乙酸丁酯體系三元相平衡體系相平衡數據的進行擬合，得到水-乙酸丁酯間uniquac方程和nrtl方程的二元交互作用參數。
  11. 3. based on the nonequilibrium model, the determination of packing section division for packed column is investigated. it is concluded that the size of packing division can be set the same as ntsm with deviation of less than 1 % for two - phase distillation. however, two times the value of packing ntsm is required for three - phase distillation under the same accuracy

    研究結果表明：對于兩相填料塔精餾過程，填料分段數目可以設為與填料理論板數目相等，其誤差不超過1 ；而對於三相填料塔精餾過程，填料分段數目需設為兩倍填料理論板數目，其誤差才不超過1 。
  12. Simulation and optimization of distillation processes are usually carried out using equilibrium model wherein the vapour phase is assumed to be in equilibrium with the liquid phases leaving the theoretical stages

    精餾過程的模擬和優化計算通常都是基於平衡模型。平衡模型假設離開塔板的汽相與液相處于平衡狀態。
  13. Identifications of fresh tomato flavor substances in 16 cultivars with spme ( solid phase microextraction ) and sde - gcms ( steam distillation mass spectromepry ), giving out the chemical components and the differences of cultivars

    摘要分別採用固相微萃取（ spme ）和同時蒸餾萃取（ sde ）兩種提取技術，對不同番茄品種的16個樣品進行風味組分的gc - ms分析鑒定，給出番茄主要揮發性風味組分的化學成分，並對不同品種風味組分的差異進行了初步分析。
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