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循环区
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  circulating section
     Based on the experimental results, the flow pattern in the settling section and the circulating section of reactor were analyzed by axial dispersion model and tank-in-series model, respectively.
     根据试验结果 ,分别运用轴向扩散模型和多釜全混流反应器串联模型 ,对反应器沉淀区和循环区的流态进行了分析和判断。
短句来源
     The dispersion number D/uL of 0 00148 in the settling section indicates that its flow pattern is similar to plug flow reactor (PFR), and the series number N of 1 021 in the circulating section indicates that its flow pattern is similar to continuously stirred tank reactor (CSTR).
     结果表明 ,反应器沉淀区的分散数D uL为 0 0 0 14 8,该区域的流态接近于平推流反应器 (PFR) ; 反应器循环区的串联级数为1 0 2 1,该区域的流态接近于全混流反应器 (CSTR)。
短句来源
     The tracer tests were performed applying pulse stimulus-response technique to an internal-loop granular sludge bed shortcut nitrifying reactor. The series number N 1.02 in the circulating section indicated that the flow pattern was similar to that of continuously stirred tank reactor(CSTR),and the dispersion number D/uL 0.00148 in the settling section indicated that the flow pattern was similar to that of plug flow reactor(PFR).
     采用脉冲刺激响应技术对内循环颗粒污泥床短程硝化反应器进行了示踪试验,结果表明反应器循环区的串联级数N为1.02,流态接近全混流反应器(CSTR),反应器沉淀区的分散数D/uL为0.00148,流态接近平推流反应器(PFR),整个反应器的流动模型可以表示为全混流反应器和平推流反应器的串联组合.
短句来源
  bulk region
     In this paper,the diameter of bubbles in a turbulent gas-liquid stirred tank is investigated by numerical simulation. The results show that the simulation well conforms to the experimental data in both the impeller discharge stream and the bulk region.
     本文对搅拌槽内气泡直径进行了数值模拟,模拟结果表明,在搅拌槽内排出流区和循环区内模拟值同实验值的吻合情况都比较好.
短句来源
     In the simulation,the influence of the energy dissipation is considered only for the diameter of bubbles,and the dynamic process for the coalescence of bubbles and circulation is not accounted for,so the value of simulation is a little greater than the experimental data in bulk region.
     在模拟过程中仅考虑了湍流动能耗散率对气泡大小的影响,没有考虑到气泡本身凝并和循环过程,所以在循环区中模拟值要比实验值稍大.
短句来源
     The results show that the simulation meets the experimental data well in both the impeller discharge stream and the bulk region.
     结果表明,在搅拌槽内排出流区和循环区内模拟值与实验值吻合较好。
短句来源
     In the simulation,the influence of energy dissipation is considered only for the bubbles diameter,and the dynamic process of the bubbles'coalescence and circulation is not accounted for,so the value of simulation is a little greater than the experimental data in bulk region.
     在模拟过程中仅考虑了湍流动能耗散率对气泡大小的影响,没有考虑到气泡自身的凝并和循环过程,所以在循环区中模拟值比实验值稍大。
短句来源
  “循环区”译为未确定词的双语例句
     It also deals with the change of coke property and the raceway before the tuyere bounded by lump coke.
     还研究焦炭性状的变化和风口前的焦炭循环区;
短句来源
     A Particle Dynamics Analyzer (PDA) is employed to measure the velocity and diameter of bubbles (measurement ranges between 0-5 m/s and 0-15 mm), the liquid velocities in liquid circulation zone and in bubble-water plumes are measured in two dimensions by using a Laser Doppler Anemometry (LDA) technique.
     本文采用激光颗粒动态分析仪(PDA)测量了钢包底部喷吹气液两相流中气泡的直径和气泡上升速度的分布; 采用激光多普勒测速仪(LDA)测量了气液两相区和液体单相循环区液体速度场的分布。
短句来源
     Through proposing a set of differential eguations governing the harm gas concentration distribution in return airways of the recirculating region and in combination with calculated ventilation network, non-steady state of recirculating ventilation bas been studied in more detail.
     通过建立循环通风系统循环区回风道有害气体浓度微分方程,并结合网络解算理论,对循环通风系统非定常情况进行了细微研究。
短句来源
     The process is simulated by the modified Lagrange method. It is shown that the circulation experience of an aggregate influences the local segregation index,and the segregation index of coupling reaction can be reduced by enlarging the power dissipation per volume,the circulation to shear ratio,and the ratio of energy dissipation in the circulation zone and impeller zone.
     用修正的拉格朗日法进行过程模拟,结果表明团块的循环经历影响其局部分隔指数,增大单位体积功耗、循环/剪切比以及循环区与桨叶区的能耗分配比能降低偶合反应的分隔指数.
短句来源
     Results: The early symptoms with vertigo and vomiting were 9 cases, disturbance conscious 8 cases,dissymmetrical pupils 8 cases, palsy of extro-ocular muscle 9 cases, finding multi-foci cerebral infarct at circulationg area in CT、MRI misdiagnosis cerebral haemorrhage 6 cases.
     结果:眩晕、呕吐起病9例,意识障碍8例,瞳孔不等大8例,眼外肌麻痹9例,不全或完全性偏瘫及偏身感觉障碍9例; CT或MRI发现后循环区多灶性脑梗死,误诊为脑出血6例。
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  bulk region
Neutral and ionized states of impurity atoms both in the surface region (where impurity atoms form associations with lattice vacancies) and in the bulk region (where an impurity exists in the form of isolated substitutional atoms) are identified.
      
In the bulk region of partially compensated samples, fast electron exchange between neutral and ionized acceptor Fe centers performed by holes via the valence band is revealed.
      
Scanning the cantilever tip in an aqueous medium at a contact force of 90-280 nN enabled us to probe subunit arrangement in the bulk region of the collagen fibril.
      
It was indicated that the liquid near a superheated surface has higher pressure than that in the bulk region owing to the existence of strong attractive force, and this pressure behavior maintains a stable liquid sublayer exactly on the surface.
      
This indicates that the dominant part of the photoemission signal in the conduction band region is due to excitations of electrons in the bulk region and that the surface electronic states play a minor role.
      
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The mechanism of deterioration of coke in the blast furnace has been studied. The reactivity of coke in the lower part of the furnace and the deterioration of coke by the circulating movement in the raceway are the main causes for the production of coke powder. Hot drum test for cokes in several of our large blast furnaces have been made according to the test methods of Oita Works in Japan. Based upon the causes of coke deterioration in the blast furnace and the hot drum test results, it is proposed that the...

The mechanism of deterioration of coke in the blast furnace has been studied. The reactivity of coke in the lower part of the furnace and the deterioration of coke by the circulating movement in the raceway are the main causes for the production of coke powder. Hot drum test for cokes in several of our large blast furnaces have been made according to the test methods of Oita Works in Japan. Based upon the causes of coke deterioration in the blast furnace and the hot drum test results, it is proposed that the coke for modern ultra large blast furnaces should be made from an appropriate coking coal mixture and with a ash content not more than 12%.

研究了焦炭在高炉内的破坏机理.对焦炭在高炉下部高温区CO_2溶解反应和风口前循环区焦炭迅速磨损及粉焦生成的关系进行了探讨,同时对我国几座大高炉用焦炭的热转鼓强度按日本大分厂规程进行了检验,根据以上的研究与检验结果,建议新建巨型高炉所用焦炭应注意适当配煤并保证灰分不高于12%.

Magnitude and direction of gas pressure gradient, i. e. pressure gradient field in the blast furnace has been proved theoretically and experimentally to be the fundamental aerodynamic factor for the descent or movement of granular solid beds and liquid droplets of iron and slag. Mechanism or mechanics of hanging in the furnace has also been analyzed.Importance of pressure gradient field for describing gas stream field in it was shown. On this basis we can further investigate the heat transfer and mass transfer...

Magnitude and direction of gas pressure gradient, i. e. pressure gradient field in the blast furnace has been proved theoretically and experimentally to be the fundamental aerodynamic factor for the descent or movement of granular solid beds and liquid droplets of iron and slag. Mechanism or mechanics of hanging in the furnace has also been analyzed.Importance of pressure gradient field for describing gas stream field in it was shown. On this basis we can further investigate the heat transfer and mass transfer processes mathematically and finally find out a reasonable model for the whole blast furnace process. Some very useful instructions for blast furnace operation were derived from this investigation.

煤气流影响高炉炉料及渣铁运动的基本力学因素不是热风(煤气)压强的绝对值或总压差,而是压强梯度矢量场的性质。压强梯度是作用于炉料及渣铁的一种体积力,本文通过理论推导和试验对此加以论证;并证明局部压强梯度超过炉料容积重量是炉内发生悬料的力学条件;对成渣带、风口循环区附近和渣铁滴落带的液相行为作了分析。此外,压强梯度是描述流速场和压强场,建立高炉散料流体力学模型的重要杠杆,而流体力学模型又是传热和传质模型的基础,从本研究得出指导生产的重要结论。

This paper presents a comprehensive description of the dissection study of an experimental B. F. jn SISC. Emphasis has laid on the distribution of stock inside the furnace, the state of the descending raw materials, apportioning of the gas flow, temperature distribution all over the blast furnace, the reduction, softening and melting of sinter and the dripping of molten metal and slag. It also deals with the change of coke property and the raceway before the tuyere bounded by lump coke. The circulation of alkalies...

This paper presents a comprehensive description of the dissection study of an experimental B. F. jn SISC. Emphasis has laid on the distribution of stock inside the furnace, the state of the descending raw materials, apportioning of the gas flow, temperature distribution all over the blast furnace, the reduction, softening and melting of sinter and the dripping of molten metal and slag. It also deals with the change of coke property and the raceway before the tuyere bounded by lump coke. The circulation of alkalies as well as the reduction of some other elements such as Si, Mn etc. are also studied.

本文综述首钢实验高炉解剖情况,重点考察炉内炉料分布,炉料下降状况,炉内温度分布,烧结矿的还原、软化、熔融以及熔铁和炉渣的滴下状态;还研究焦炭性状的变化和风口前的焦炭循环区;对碱金属的循环和硅、锰等元素的还原也进行了研究.

 
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