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conversion section     
相关语句
  转化工序
     in conversion section, a Ⅳ Ⅱ Ⅰa-Ⅲ Ⅰb"3 +1" process will be applied with introduced KKK blower and catalyst, all-stainless steel convertor and contracted-expanded tube gas heat exchangers.
     转化工序采用ⅣⅡ Ⅰa-Ⅲ Ⅰb“3+1”两次转化工艺,引进“KKK”风机和全部催化剂,采用全不锈钢转化器和缩放管换热器;
短句来源
     Th ermal compensation design of piping of conversion section in sulphuric acid plant
     硫酸厂转化工序管道热补偿设计
短句来源
     After retrofitting, the conversion section attained heat equilibrium and electric consumption per tone of sulphuric acid was decreased from 210. 03 kWh to 165. 73 kWh.
     改造后的运行情况表明,转化工序实现了自热平衡,电耗由210.03 kWh/t降至165.73 kWh/t,综合效益明显。
短句来源
     It consisted of a cleaning section of one-stage DynaWave scrubber, a combined gas cooling tower and two stages of electrostatic eliminators, a drying and absorption section using low-level and high-efficiency technology and a conversion section in IV II Ia-III I b"3 +1"double conversion configuration.
     净化工序采用一级动力波、气体冷却组合塔、两级电除雾器工艺,干吸工序采用低位高效干吸工艺,转化工序采用ⅣⅡⅠa-ⅢⅠb 3+1”4段两次转化工艺。
短句来源
     More than three years of its application in the conversion section of the 120 kt/a sulfur-burning sulfuric acid plant has shown that the heat exchanger offers advantages such as high heat transfer coefficient,small investment,small resistance and low operating cost.
     它在120 kt/a硫磺制酸装置转化工序中三年多的运行情况表明,该换热器具有传热系数高、一次投资少、阻力小、运行费用低等优点。
短句来源
更多       
  转化工段
     Structure features and application of two types of heat pipe economizers in the conversion section of a 120 kt/a sulphur-burning sulphuric acid plant are described.
     介绍120kt/a硫磺制酸装置转化工段两台热管省煤器的结构特点和应用情况。
短句来源
     In this paper, main measures for changing the singlie contact into double contact in acid making are analyzed and discussed viewing from selection of dry absorption process, site finalization of conversion section, plan layout, selection of equipment, construction procedures and capability adaptive to change of smelting capacity.
     从干吸流程选择、转化工段厂址选定、平面面置、设备选型、施工措施以及适应熔炼生产规模变化的能力等方面分析论述了在硫酸单转单吸改造时考虑到将来改为双转双吸所采取的主要措施。
短句来源
     The conversion section of large capacity sulfuric acid plants is characterized by large scale equipment,large-bore pipes,compact layout,and high medium temperature,so,stainless steel corrugated compensators are usually used to compensate the thermal expansion of pipes.
     大型硫酸装置转化工段的设备大、管道直径大、布置紧凑,介质温度高,管道的热膨胀补偿常采用不锈钢波纹补偿器。
短句来源
     The process calculation method for the tube shell type heat exchanger of the conversion section of the sulfuric acid plant has been detailed in the Process Calculation Chapter of the Handbook for Sulfuric Acid Process Design. The calculation for the shell portion is quite complicated.
     硫酸装置转化工段管壳式换热器的工艺计算方法 ,在《硫酸工艺设计手册·工艺计算篇》中已作了详细阐述 ,其壳体部分的计算较烦琐。
短句来源
     The system structure,features and function of SUPCON JX-300X DCS are introduced. Its application in the sulfuric acid plant based on sulfur is to monitor the production of melting sulfur burning section,heat engineering section,conversion section and dry absorption section.
     介绍了SUPCONJX-300XDCS的系统结构、系统特点、系统功能,以及在硫磺制酸装置中的应用,主要是对熔硫焚硫工段、热工工段、转化工段、干吸工段的生产监控。
短句来源
  变换工段
     The Design of the Conversion Section in the Production of the Synthetic Ammonia
     合成氨生产中变换工段的设计
短句来源
     Application of Aspen Plus Engineering Software on Simulation of CO Shift Conversion Section of Methanol Production Process from Texaco Gas
     采用Aspen Plus软件对德士古煤气合成甲醇工艺中CO变换工段的模拟
短句来源
     The CO shift conversion section of the methanol production process from texaco gas is simulated with the Aspen Plus engineering software.
     采用Aspen Plus工程软件对利用德士古煤气生产甲醇过程中的CO变换工段进行模拟。
短句来源
     According to the components of the texaco gas and the high temperature and high-pressure operational condition involved,the RK-ASPEN property method and the ELECNRTL property method should be used in the simulation of the CO shift conversion section. The NH_3 molar percentage in the outlet gas of the shift convertion section decreases from 0.0612% of the texaco gas to 0.0011%.
     根据德士古煤气组成及CO变换工段的高温高压条件,采用RK-ASPEN物性方法和ELECNRTL物性方法,出CO变换工段的混合气体中NH3摩尔含量从进工段的0.0612%下降到0.0011%。
短句来源
     Small Micro-Computer Control System for Fertilizer Conversion Section
     小化肥变换工段微机控制系统
短句来源
更多       
  转化系统
     SO 2 Leakage Sensitivity of Heat Exchangers and Heat Exchange System in Conversion Section
     转化系统换热器及换热流程的SO_2泄漏敏感性系数
短句来源
     Feature and application of preheating equipment of conversion section in No. 4 sulphuric acid system
     硫酸四系列转化系统预热装置的特点与应用
短句来源
     Design and operation of the conversion section in a sulphuric acid plant based on high concentration off gas 〔 φ (SO 2)10%~13%〕are described Middle and low strike ring catalysts were packed in converter with reasonable distribution of loading amount and conversion for each pass Compensation for heat expansion was applied to equipment and piping The plant operated smoothly with a conversion of 99 8% 〔
     介绍高浓度SO2 烟气〔φ(SO2 ) 10 %~ 13%〕制酸装置转化系统的工艺设计参数和实际运行情况。 采用环状中、低温催化剂和含铯环状低温催化剂 ,合理分配各段催化剂的装填量和转化率 ,对设备和管道进行良好的热膨胀补偿。
短句来源
     During operation, all design targets were reached, no additional heat was needed for conversion section and the SO 2 concentration in off gas complied with the standard.
     改造后 ,各项指标均达到设计要求 ,转化系统不需补热 ,尾气达到排放标准。
短句来源
     More catalyst of the same type was packed in the second, third and fourth beds of converter, heat exchange area was raised and the bypass for temperature adjustment was revised in conversion section.
     转化系统增加二、三、四段催化剂量 ,型号不变 ,增大换热器面积 ,并将调温副线进行了调整。
短句来源

 

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      conversion section
    Then, convert the rst consecutive B frames to Bback mode as described below in the Frame Conversion section.
          
    More detail on this issue is also given in the Energy Conversion section of this Appendix.
          
    Figure 1 illustrates a simplified SMPS schematic showing the power conversion section with active, passive, and magnetic elements.
          


    The heat recovery efficiencies of four kinds of existing waste heat recovery methods used in the conversion section of the small ammonia plant are calculated and compared. It shows that the heat recovery efficiency of method 1 is the lowest, while its investment of the equipment is the highest. The heat recovery efficiencies of methods 2 and 3 are same. They are suitable for the renovation for saving energy in old plants though the investment of the equipment of method 3 is less than method 2. Although...

    The heat recovery efficiencies of four kinds of existing waste heat recovery methods used in the conversion section of the small ammonia plant are calculated and compared. It shows that the heat recovery efficiency of method 1 is the lowest, while its investment of the equipment is the highest. The heat recovery efficiencies of methods 2 and 3 are same. They are suitable for the renovation for saving energy in old plants though the investment of the equipment of method 3 is less than method 2. Although the investment of the equipment of method 4 is higher, its heat recovery efficiency is the highest and the utilization of heat energy is rational. Therefore it is suitable for the waste heat recovery in new plants and that in old plants in which much improvement are required for the-conversion section.

    本文对小合成氨生产中目前采用的四种变换余热回收方法的回收热效率等进行了计算和比较。表明,方法1的回收热效率最差,设备投资最高,一般不宜采用。方法2和3的回收热效率完全相同,适用于老厂挖潜,但方法3的设备投资比方法2低,故更为适用。方法4虽然设备投资较高,但其回收热效率高,热能利用合理,适合于新建厂或变換系统作较大改造时采用。

    The paper describes a new sulphate recyclne process for the produc tiou of nitrophosphate. Middle grade and high impurity Jing-He phospate rock (P_2O_530%, R_2O_36%) and lower concentrations of nitric acid (40-42% HNO_3) are used as raw materials. A new processing route different from the traditional Power-Gas process is used. The product obtained is a compound fertilizer which contains 25-13-0. Efficiency of P_2O_5 in the product is above 90% and water solubility of P_2O_5 is above 65%. The optimum conditions...

    The paper describes a new sulphate recyclne process for the produc tiou of nitrophosphate. Middle grade and high impurity Jing-He phospate rock (P_2O_530%, R_2O_36%) and lower concentrations of nitric acid (40-42% HNO_3) are used as raw materials. A new processing route different from the traditional Power-Gas process is used. The product obtained is a compound fertilizer which contains 25-13-0. Efficiency of P_2O_5 in the product is above 90% and water solubility of P_2O_5 is above 65%. The optimum conditions in the digestion and conversion sections are defined. This method is an efficient use of middle grade and high impurity phosphate rock and normal pressure nitric acid produced in quantity in China.

    本文提出了硫铵循环法制硝酸磷肥的新工艺流程,以中品位高杂质的金河磷矿(P_2O_530%,R_2O_3 6%)及低浓度硝酸(40~42%)为原料,采用不同于传统的Power-Gas流程的技术路线,制得了25-13-0的氮、磷复合肥科。产品中P_2O_5的有效率>90%.P_2O_5水溶率>65%。文中还确定了酸解部分及石膏转化部分的优惠工艺条件.

    According to the demands of design and construction of a large spanarch brige, a feasible test scheme on sturdy framework concrete arch bri-dge has been put forward and the stress redistribution at the section ofarch crown of model as well as prototype has been calculated and analy-zed by using the method of creep conversion section property. On thisfoundation, instructive advice has been offered for the design, constru-ction and model test of large span dridges.

    根据某大型拱桥设计施工的需要,本文对收缩徐变导致劲性钢骨混凝土拱肋截面应力重分布问题,提出了切实可行的科研试验方案,并采用徐变换算截面特性法,对模型与原桥拱顶截面的应力重分布情况,作了详细的计算与分析。在此基础上,对大桥设计施工与模型试验工作提供了有指导性的意见。

     
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