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first evaporator
相关语句
  一段蒸发
     Using the phase diagram analysis method, this paper analyses the complicate heat transfer process in the heat utilization section of the urea first evaporator in the water solution full recycle process and the important chemical parameters have been gotten, that submit the necessary data for the design of the first evaporator.
     应用相图分析法分析了水溶液全循环法尿素一段蒸发加热器热利用段的复杂传热过程 ,得到了重要的化工参数 ,为一段蒸发加热器的设计提供了必要的数据
短句来源
  第一蒸发器
     In the design of vacuum evaporation,some points should be paid attention to,such as allocating condensation area,decreasing the temperature of cooling water,preventing desolventizer-toaster from positive pressure,reasonably operating the second evaporator,using wet fines catcher,enlarging the area of first evaporator,selecting stainless steel material and steam jet pump,reasonably choosing the vacuum degree,making good use of used heat and etc.
     在负压蒸发工艺设计中要注意合理配备冷凝面积,降低冷却循环水的温度,防止蒸脱机气相产生正压,控制蒸脱机二次蒸汽量,合理操作第二蒸发器,使用湿式粕末捕集器,加大第一蒸发器面积,列管适当加长加大,并选用不锈钢材质,选择蒸汽喷射泵,合理选择真空度,搞好余热利用和尾气回收。
短句来源
  “first evaporator”译为未确定词的双语例句
     Analysis and Design of Heat-Utilization Section of the First Evaporator in the Urea Plant
     尿素装置一段蒸发器热利用段的分析与设计
短句来源
     The optimum process conditions are as follows:Na_2S content in wastewater 4%,the end-point concentration of evaporant in the first evaporator 70 g/L,the end-point density of evaporant in the second evaporator 1.14~1.24 g/mL,the later evaporant is clarified fully and concentrated until to 60% Na_2S,then packed as solid product,if flaking,put into flaker to get flaky product.
     最佳工艺控制条件:废水中硫化钠质量分数4%左右,一效蒸发器料液终点硫化钠质量浓度70g/L,二效蒸发器料液终点密度1. 14 ~1. 24g/mL,二效蒸发器终点料液充分澄清后,浓缩至硫化钠质量分数60%,包装即为固体硫化钠,经制片机制片后即为片状硫化钠。
短句来源
  相似匹配句对
     The evaporator temperature was 110℃.
     蒸发器温度110℃。
短句来源
     SELECTION OF GRAPHITE EVAPORATOR
     石墨蒸发器的选择
短句来源
     The modification of level control for the first effect evaporator
     Ⅰ效蒸发器液位控制改造
短句来源
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By studying the evaporation process of the caustic lye with heat pump,a process of paratactic combination evaporation is put forward.That is a process which uses steam power with heat pump to increase the pressure in heat pump and then with all the secondary steam of heat pump evaporator made both as heat steam of heat pump evaporator and the first evaporator.Since the heat pump evaporator of this process can be operated under a lower concentration,the process parameters can be properly changed and...

By studying the evaporation process of the caustic lye with heat pump,a process of paratactic combination evaporation is put forward.That is a process which uses steam power with heat pump to increase the pressure in heat pump and then with all the secondary steam of heat pump evaporator made both as heat steam of heat pump evaporator and the first evaporator.Since the heat pump evaporator of this process can be operated under a lower concentration,the process parameters can be properly changed and it may use as low the raise pressure ratio of steam as possible to enlarge the entrainment ratio of heat pump,and more than 15% of energy can be saved.

通过对烧碱溶液热泵蒸发工艺的研究 ,提出了一种用驱动蒸汽将热泵效二次蒸汽全部用热泵增压后同时供给热泵效和第一效蒸发器作加热蒸汽的并列组合式工艺。该工艺的热泵效由于可以在较低的浓度下操作 ,可以适当地改变工艺参数 ,采用尽可能小的蒸汽增压比以提高热泵的引射系数 ,可取得节能 1 5 %以上的显著效果。

Using the phase diagram analysis method, this paper analyses the complicate heat transfer process in the heat utilization section of the urea first evaporator in the water solution full recycle process and the important chemical parameters have been gotten, that submit the necessary data for the design of the first evaporator.

应用相图分析法分析了水溶液全循环法尿素一段蒸发加热器热利用段的复杂传热过程 ,得到了重要的化工参数 ,为一段蒸发加热器的设计提供了必要的数据

The quality of crude oil with solvent extraction can be significantly decreased with the increase of heating temperature and the prolonging of heating time.Miscella vacuum evaporation technology is that the first evaporator,the second evaporator and stripping column are operated in vacuum,and the second steam is as the heating soruce of first evaporator.The vacuum evaporation technology has some advantage,such as reducing the contact of oil with oxygen in air,reducing the solvent boiling point...

The quality of crude oil with solvent extraction can be significantly decreased with the increase of heating temperature and the prolonging of heating time.Miscella vacuum evaporation technology is that the first evaporator,the second evaporator and stripping column are operated in vacuum,and the second steam is as the heating soruce of first evaporator.The vacuum evaporation technology has some advantage,such as reducing the contact of oil with oxygen in air,reducing the solvent boiling point of miscella and the evaporation temperature,saving energy,saving steel materials,improving the quality of crude oil and so on.In the design of vacuum evaporation,some points should be paid attention to,such as allocating condensation area,decreasing the temperature of cooling water,preventing desolventizer-toaster from positive pressure,reasonably operating the second evaporator,using wet fines catcher,enlarging the area of first evaporator,selecting stainless steel material and steam jet pump,reasonably choosing the vacuum degree,making good use of used heat and etc.

浸出毛油的品质随着加热温度的升高和时间的延长显著降低,混合油负压蒸发工艺是使一蒸、二蒸、汽提在负压状态下操作,同时,利用蒸脱机的二次蒸汽作为一蒸的热量来源。一方面在负压状态下可以减少油脂与空气中氧分子的接触;另一方面可以降低混合油中溶剂的沸点,以达到降低蒸发温度的目的。可以节约能源、节省钢材、提高毛油质量。在负压蒸发工艺设计中要注意合理配备冷凝面积,降低冷却循环水的温度,防止蒸脱机气相产生正压,控制蒸脱机二次蒸汽量,合理操作第二蒸发器,使用湿式粕末捕集器,加大第一蒸发器面积,列管适当加长加大,并选用不锈钢材质,选择蒸汽喷射泵,合理选择真空度,搞好余热利用和尾气回收。

 
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