流動反應器 的英文怎麼說
中文拼音 [liúdòngfǎnyīngqì]
流動反應器
英文
flow reactor- 流 : Ⅰ動1 (液體移動; 流動) flow 2 (移動不定) drift; move; wander 3 (流傳; 傳播) spread 4 (向壞...
- 反 : Ⅰ名詞1 (方向相背) reverse side 2 (造反) rebellion 3 (指反革命、反動派) counterrevolutionari...
- 應 : 應動詞1 (回答) answer; respond to; echo 2 (滿足要求) comply with; grant 3 (順應; 適應) suit...
- 器 : 名詞1. (器具) implement; utensil; ware 2. (器官) organ 3. (度量; 才能) capacity; talent 4. (姓氏) a surname
- 流動 : 1. (液體或氣體移動) flow; run; circulate 2. (經常變換位置) going from place to place; on the move; mobile
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Hydrodynamics in an air - lift loop reactor
氣升式環流反應器的流體動力學模型Intermittence analysis of pressure fluctuation signal in scisr
撞擊流反應器內壓力波動信號的間歇性分析The hydrodynamic parameters and mass transfer coefficient are studied in the internal loop airlift bioreactor used in treating wastewater. the hydrodynamic parameters consist of gas holdup, liquid velocity and axial dispersion coefficient
本文從流體動力學和傳質動力學兩個方面考察了用氣升式內環流生物反應器應用於廢水處理的性能。In this paper, high heat penetration into a moving particulate bed is described mathematically with a comprehensive heat and mass transfer model. the distribution of gas velocity and pressure, the temperature field of gas and solid in the moving particulate bed are examined for different conditions. the results show that thermal penetration into the moving packed - bed particles by fluid flow in porous media is high only in the position near the gas entrance. the thermal penetration thickness tends to increase with the fluid flow velocity and decrease with the particle moving velocity. in the region of thermal penetration, the porosity of solid bed has significant effect on gas field and pressure loss. it is feasible to reduce the gas pressure loss by a larger width / height packed bed in design and operation. the correspondence between thermal infection depth and particle bed height would be helpful to keep high oapacity of reactor and reduce the cost of operation
針對移動顆粒床中物料層內的高溫氣體滲流傳熱現象,考慮滲流與傳熱的相互作用,採用局部非熱平衡假設建立了多孔介質滲流傳熱物理數學模型並進行了數值計算.研究了不同情況下床內填充多孔介質中的流速、氣固溫度和床層壓力損失.計算結果表明,高溫熱氣對移動床顆粒料層的熱滲透主要發生在滲流入口端區域,增大入口滲流速度以及減小床層物料下移速度將導致物料溫度沿床高慢速下降,熱滲透深度擴大,熱滲透作用區域內的物料溫度水平提高.在熱滲透作用區域,孔隙率對流場和壓力損失有很大的影響.研究結果對于移動顆粒床反應器的設計與運行具有一定的參考作用Abstract : a tube reactor mixed by an axial continuous flow and four side jets as the dispersed flow is studied. the concentration distribution of the dispers ed flow was measured by means of the laser light scattering. the different flow patterns revealed the special construction of concentration distributions in relation with the velocity ratio of side flow and axial flow
文摘:研究了圓管反應器中四束側向對撞射流與軸向流形成的混合流動.應用激光粒子散射成像測量了側向分散相在混合流中的濃度場分佈,得到了不同的濃度分布圖形隨側向流與軸向流速比關系,揭示了內在有規律的獨特的濃度分佈結構A novel model for residual fluid catalytic cracking process ( rfcc ) is proposed. it divides the whole reactor into two part : the riser as ideal pipe flow reactor and the sett - ler as ideal cstr. the model contains six lumps reaction kinetics with serial and parallel network
通過將實際裝置中發生裂化反應的提升管和沉降段反應器分別考慮為理想的活塞流反應器和連續攪拌式反應器,建立了簡化的渣油催化裂化反應6集總組分的串列和并行反應動力學網路模型。The random mathematical model is described using equivalent markov equations. the time and state parameters are discrete. based on the model, the flow rate distributions along radial and average at any height can be calculated directly, moreover, the probability transition matrix of the flow can be determined via the statistic character of the random cumulate particles, and be corrected by s. cd the random theoretical model shown in fig. l, the section of the bed of tbr is divided into a series of concentric circles
一、在常溫和常壓下進行滴流床反應器流率分佈的研究,以狀態離散、時間離散的齊次markov過程描述了滴流床在滴流區的流率分佈,建立了滴流床在滴流區流率分佈的隨機模型,根據此模型可以: 1 、可直接確定任一高度下的液體徑向流率分佈及平衡流率分佈; 2 、液體流動的概率轉移矩陣可由隨機堆積顆粒的統計特性確定,以參數s修正。In this paper we focused on the kinetics of this reaction. the experiments were carried out a packed flow glass in tegral reactor
在固定床流動積分反應器中考察了反應溫度空速及反應物中hSimulating results reveal that hydrodynamics of catalysts in riser reactor is very complex due to the effect of injection and catalysts backmix dramatically near the nozzle, reaction products unevenly distributie along the riser height, there exists apparently temperature gap between gas - phase and solid - phase near the nozzle and the temperture of two phase is nearly equal at middle - top part
模擬結果表明,由於原料油射流的影響,提升管反應器內催化劑顆粒的流動特徵非常復雜,在噴嘴附近的催化劑顆粒存在明顯的滑落返混;裂化產物濃度沿提升管存在非均勻分佈;氣粒兩相間溫差在噴嘴附近顯著,在中上部氣粒兩相溫度幾乎相等。From this work, a new way to improve the fluidization quality of the ultra - fine powders is found, and the studying result can supply as a basis of further investigation and be able to be used in the design of a spouted bed with a draft tube for the ultra - fine powders
本研究為改善超細粉的流化質量提供了一種新的思路,研究成果為進一步四川大學碩士學位論文開展有關基礎研究和開發超細粉導向管噴動床反應器提供了良好的基礎。Abstract : in this paper, the development status quo and tendency of aerobic fluidized - bed bioreactor used in treatment of organic wastewater at home and abroad are presented. some new types of aerobic fluidized - bed bioreactors are described
文摘:介紹了國內外好氧生物流化床反應器處理有機廢水技術的發展概況,分析了好氧生物流化床反應技術的發展動向,並介紹了幾種新型的好氧生物流化床反應器。In this paper. flow properties of multistage fluidized - bed bioreactor with external circulation at a pilot scale is studied. according to characteristic analysis, the model of completely mixing reactor in series is introduced to characterize real reactor as a theoretical model. on the basis of analog computing analysis and discussion of theoretical model. by means of pulse tracer method, experiments on residence time distribution ( rtd ) have been done in different conditions including the change of tracer level, feeding flow rate and circulation flow rate. the result shows when the ratio of circulation flow rate and feeding flow rate amounts to at least 4, the flow properties of multistage fluidized - bed bioreactor with external circulation at a pilot scale is very close to the model of completely mixing reactor in series. an amendatory model has been established by the regression method
作者首先在對反應器進行特徵分析的基礎上,建立了描述中試規模多級外循環流化床生物反應器流動特性的串級全混流模型,並對理論模型進行了模擬計算分析和討論,在此基礎上,作者分別在無循環和有循環(改變示蹤劑用量、流加流量和循環流量)的條件下,利用脈沖示蹤法對一到五級串聯外循環流化床反應器進行了停留時間分佈實驗,結果表明,在循環流量與流加流量的比值達到大於等於4時,中試規模多級外循環流化床反應器的流動特性接近串級全混流模型,通過數據回歸擬合的方法,建立了中試規模一到五級串聯外循環流化床反應器的流動模型。Local flow characteristics in the riser of an external - loop airlift reactor
氣升式外環流反應器上升管中局部流動特徵According to the variation of reactor flow regimes among reactor parts, a more efficient model is built. a new algorithm ( difference analysis ) is used to analyze this model. 3
針對反應器各區域流動狀況的差異,分區建立了適應各自流動特徵的反應器模型,並採用誤差分析和最小二乘法求解模型; 3Characteristics of heat transfer and flow in a poly - reactor
聚酯反應器的流動特性與傳熱的研究Local mass transfer coefficients and hydrodynamics in the airlift external loop reactor
外環流反應器的流動與局部傳質特性研究Study on flow and heat transfer of double - loop anaerobic reactor
雙循環厭氧反應器的流動及傳熱研究The dynamic model is a typical nonlinear distributed - parameter system with high dimension about19xn x4, where n is the section number in one reformer. method of lines is adopted to reduce these partial differetial equations ( pdes ) into n lumped - parameter ordinary differetial equations ( odes ) solved by numerical algorithm
在靜態模型基礎上建立了全流程主要裝置(重整反應器、加熱爐、分離罐)的動態模型,採用分段線性化方法對重整反應分佈參數模型離散化成一組常微分線性方程組進行了求解。Discussion of start - up problems on abr reactor
厭氧折流板反應器啟動問題探討Multistage fluidized - bed bioreactor with external circulation has been in use in the production of fuel alcohol by immobilized yeast cells technique. as a new - style reactor. it has the advantage of high conversion, complete reaction and little damage to immobilized yeast cells. flow properties is the foundation of reactor ' s physical transmission process. and it is the key factor of deciding whether the auxiliary material conversion is high or low. at present, the study on flow properties of multistage fluidized - bed bioreactor with external circulation at a pilot scale is rarely reported
多級外循環流化床生物反應器作為一種新型生物反應器,由於具有轉化率高、反應徹底、對顆粒損傷少等優點在固定化細胞制取燃料酒精技術上得到應用。但是,國內關于中試規模多級外循環流化床反應器流動特性的研究還很少,而流動特性是反應器物理傳遞過程的基礎,是研究物料在反應器中轉化率高低的重要因素,因此,弄清楚外循環流化床反應器的流動特性是非常重要的。分享友人