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recirculation     
相关语句
  回流
     Increasing the effluent recirculation rate from 0 to 180%, the COD reduction improved from 79.45% & 80.13% to 81.98% & 83.33% and when organic loading rate (OLR) was kept at 9.933 & 14.900 g/(L·d), respectively, coupled with more methane production;
     研究发现,当回流比从零提高到180%时,OLR分别为9.933、14.900g/(L·d)的厌氧消化系统COD去除率分别从79.45%、80.13%上升到81.98%、83.33%;
短句来源
     Structural Effect of Landfill on Leachate Recirculation
     填埋结构对渗滤液回流效果影响研究
短句来源
     Recirculation ratio,ranged 1∶1 to 14∶1,had little effect on effluent ρ_(COD) level.
     在一定的范围内(1∶1~14∶1),回流比对出水ρCOD影响较少,但当回流比为18∶1,上升流速为3.8 m.
短句来源
     Useful information for the performance improvement was got from the distribution of inner flow velocity and pressure, flows impact, secondary flow and recirculation in the helix centrifugal pump.
     通过对该泵内部流动速度、压力分布与捕捉到的流动冲击、二次流、回流等重要现象的分析,给该泵的性能改善与改进提供可靠的信息。
短句来源
     Optimization of Structure Parameters for Self Recirculation Burner
     自身回流式燃烧器的结构参数优化
短句来源
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  回灌
     The hydraulic loading rate of concentrated liquor recirculation increased from 32.38 mL/(L·d) to 202.36 mL/(L·d),the COD removal efficiency decreased from 94% to 70%;
     回灌浓缩液的水力负荷从32.38 mL/(L.d)上升到202.36 mL/(L.d),COD去除率从94%下降到70%;
短句来源
     When the operation mode was changed from anaerobic mode to semi-aerobic mode in the 710th day,the COD concentration of simulated bioreactor landfill column D1(leachate recirculation once everyday) and D4(leachate recirculation twice every week) was dropped from 705mg/L,669mg/L to 135mg/L,178mg/L and the ammonia-N concentration was dropped from 650mg/L,877mg/L to undetectable level after 360 days.
     结果表明,按厌氧方式运行710 d的模拟垃圾柱改为按准好氧方式运行360 d后,每天回灌1次的D1柱和每周回灌2次的D4柱渗滤液COD浓度分别由705 mg/L和669 mg/L下降到135mg/L和178 mg/L,氨氮浓度由650 mg/L和877 mg/L降到不能检出水平;
短句来源
     The results indicated,that the recirculation had positive impaction of COD and NH_3—N removal,COD and NH_3-N were 81.6% and 70% individually.
     结果表明,浓缩液回灌对COD和NH3—N有很好的去除效果,浓缩液回灌出水稳定后,COD去除率为81.6%,NH3—N去除率为70%.
短句来源
     Hence,the recirculation frequency is the secondary factor. The optimal hydraulic load and recirculation frequency concluded are 15.9 L/(m~2·d),and 3 times/d,respectively. The removal percentages of COD,BOD_5,NH~+_4-N under the conditions are 99.3%,99.7%,98.7%,respectively.
     较优的水力负荷和回灌次数分别为15.9 L/(m2.d)和3次/d,此时对渗滤液中COD、BOD5、NH4+-N的去除率分别为99.3%、99.7%和98.7%。
短句来源
     Leachate recirculation can accelerate the attenuation of BOD5 and COD.
     渗滤液回灌可大幅度加速COD、BOD_5的去除。
短句来源
更多       
  再循环
     Blood flux is 250~350ml/min. KT/V is 1.1~1.3.Recirculation rate is 3.0%~3.2%.
     1年平均透析 118.2± 12 .6次 ,透析血流量 2 5 0~ 35 0ml/min ,透析充分性指标KT/V为 1.1~ 1.3,再循环率为 3.0 %~ 3.2 %。
短句来源
     The average using time was 560.8±42.4 hr per year,the blood flux was 200~250 ml/min,KT/V was 1.2~1.5,the incidence of recirculation was 3.2~3.4%.
     每例内瘘平均透析次数为 ( 14 0 .2± 10 .6)次 ,平均透析时间为 ( 5 60 .8±42 .4)小时 ,透析血流量 2 0 0~ 2 5 0ml/min ,KT/V为 1.2~ 1.5 ,再循环率R为 3 .2~ 3 .4%。
短句来源
     Analysis and Study of the Technology of Preventing Slagging in the furnace with Flue Gas Recirculation of Type E420-13.73-560KT Boiler Made in Russia
     对俄制E420-13.73-560KT型锅炉采用烟气再循环防止炉膛结渣技术的分析研究
短句来源
     The results showed that Fos expression was first induced in the dentate gyrus(DG) and subiculum, which appeared at 2h, peaked at 5-8h and decayed at 8h after global ischemia and recirculation (GIR).
     结果表明:缺血40min再循环后2h,首先在海马齿状回转折部的颗粒细胞和下托诱导出Fos表达,5~8h达到高峰,8h后锐减并逐步消失.
短句来源
     On the basis of the characteristics of two inlet 1170t/h boilers which are made in American FOSTER WHEELER Corporation for Jiujiang Third Period and the require of DL/T794-2001“chemical cleaning guide for steam power plant”,making the economizer recirculation pipe and the boiler waterwall drainage tube into the inlet-water pipe the dip acid cleaning method provided by FOSTER WHEELER Corporation is changed to a circulation cleaning way.
     根据九江三期两台美国FOSTERWHEELER公司进口的1170t/h锅炉特点和DL/T794-2001《火力发电厂锅炉化学清洗导则》要求,利用省煤器再循环管和水冷壁下联箱排污管分别作为省煤器和水冷壁进水管,将FOSTERWHEELER公司提供的浸泡酸洗法改为循环酸洗法。
短句来源
更多       
  循环
     The reaction rate of SO2 oxidation,particularly at high conversion on S101-2H ring-shaped vanadium catalyst(φ9/ φ4×15-20mm) in industrial operating conditions was studied in a gradientless reactor with internal recirculation.
     本文采用内循环无梯度反应器,在工业条件范围内,特别在高转化率下,测定了S101-2H型工业粒度(Φ9/Φ4×15~20mm)环状钒催化剂的宏观反应速率。
短句来源
     The kinetics of isomerization of 1 butene over RE 2O 3/SiO 2(RE=La,Pr,Sm,Eu,Gd,Tb,Dy,Ho,Er,Tm or Yb)catalysts has been investigated by a flow recirculation gradientless reactor.
     以RE2O3/SiO2(RE为La、Pr、Sm、Eu、Gd、Tb、Dy、Ho、Er、Tm或Yb)为催化剂,采用外循环流动无梯度反应器进行了1-丁烯异构化动力学的研究。
短句来源
     The steady-state kinetics of deep oxidation of propanol over Pt/Al_2O_3 eatalyst has been investigated by the recirculation gradientless reactor.
     用玻璃外循环无梯度反应器研究了在Pt/Al_2O_3催化剂上丙醇深度氧化稳态动力学。
短句来源
     Optimal conditions for reactor were: inlet temperature 50℃,outlet temperate 110℃,pressure 1.6MPa,recirculation ratio 6,mole ratio of hydrogen to oil(1,)volume space velocity 6h~(-1),and outlet temperature of the cooler 10℃.
     确定了较佳的工艺条件:反应器入口温度50℃、反应器出口温度110℃、反应压力1.6 MPa、循环比(循环稀释料与所处理原料的质量比)6、氢与油摩尔比1、液态空速6 h-1、反应冷却器出口温度10℃。
短句来源
     The annual total cost of optimum design decreased by 20.8% than that of conventional design without EGR,14.3% than that of conventional design when exhaust gas recirculation ratio was 0.2.
     对湿空气出口温度和废气循环比进行优化设计,比无废气循环的常规设计节省年总费用20.8%,比循环比为0.2时的常规设计节省年总费用14.3%。
短句来源
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      recirculation
    Formation of recirculation zones in the boundary layer on a moving surface
          
    The results are given of the numerical solution of the corresponding nonlinear problem, and the basic structure of the recirculation zones is discussed.
          
    It is noted that there are regimes in which the main recirculation zone is accompanied by an additional eddy formation with circulation in the opposite direction.
          
    If the angle of attack reaches the critical value, a closed region of recirculation flow of small extension is formed on the upper surface of the airfoil.
          
    Asymptotic theory of the occurrence of recirculation zones in an axisymmetric wake under the influence of an adverse pressure gr
          
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    The method of turbine regulation has to be considered in the design of steam boiler reheater.From the point of economy,it may not be necessory to control the reheat steam temperature,but for the sake of sabety,it has to be controlled within limits. The variation of reheat steam temperature,at different boiler load,is con- cerned with the percentage of direct radiating heat,absorbed by the reheater from the furnace. The reheat steam temperature changes sensibly by the voriation of flame position in furnce,so...

    The method of turbine regulation has to be considered in the design of steam boiler reheater.From the point of economy,it may not be necessory to control the reheat steam temperature,but for the sake of sabety,it has to be controlled within limits. The variation of reheat steam temperature,at different boiler load,is con- cerned with the percentage of direct radiating heat,absorbed by the reheater from the furnace. The reheat steam temperature changes sensibly by the voriation of flame position in furnce,so it is good for conditional regulation.Gas recirculation is the most popular method for reheat control,the omount of recirculing gas is concerned with the location of the reheater in the gas passages.However,the flue gas heat loss of the boiler set will be increased when the gas recirculation is opplied.For reheat control,the method of steam by-pass will not affect the high pressure steam temperature,but the omount of high alloy steel for the ma- nufacture of reheater is much more increased.When using gas damper for regu- lation,if a part of the primary superheater heating surface is placed in poralld with the reheater,the reheat control will increase the difficulty for the control of primary steam temperature. In practice,each control method requires certain feasible condition for its opplication ond also has limit of temperature controlling range.

    中间过热器的设计与汽轮机的调节方法有关。从经济方面看来,对二次汽温不一定要进行调节;但从工作安全方面来看,这种调节是必要的。在不同负荷下,二次汽温的变化同中间过热吸收炉膛辐射热的百分量有关。用喷燃器倾角调节时,二次汽温的变动最灵敏,因而适于作动态调节。烟气再循环是最常用的调节方法,所需再循环烟量同中间过热器所处的烟温地带有关。烟气再循环会增大锅炉机组的排烟热损失。蒸汽旁路的调节方法不影响一次汽温,但中间过热器所需金属用量增多。当用烟气挡板调节时,如一次和二次过热器并例工作,则二次汽温的调节将增大一次汽温调节的困难。实际上每种调节方法均有一定的适用条件和调节幅度的限制。

    Through calculation of concrete boiler design, the paper discusses: the influences of gas recirculation to the heat transfer of different heating surfaces; the suitable arrangement of steam reheater; the amount of recirculating gas needed for controlling the reheat temperature; and the influence of gas recirculation to the economy of boiler plant. The paper also gives a brief review of the peculiarities of different reheat temperature controlling methods.

    本文通过了具体鍋爐机组的热力計算与分析,說明烟气再循环对各个受热面传热的影响,中間过热器的合理布置,为維持二次汽溫所必需的再循环烟量,以及烟气再循环对鍋爐經济性的影响,还簡要論述二次汽溫各种調节方式的一些基本特点。

    Alders' theory of liquid-liquid extraction was developed further and new equa-tions for calculating the number of stages and for determining the optimized extrac-tion factors and recirculation ratios in both the extraction and stripping sections were derived. These results were applied to the separation of rare earths and were found in agreement with experiments.

    本文提出恒定萃取比体系和恒定混合萃取比体系的级数计算公式,最优萃取比方程,最优回萃比和回洗比公式及最优化分馏萃取工艺的设计步骤,发展了Alders液液萃取理论。

     
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