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前言 山东铝厂为扩大氧化铝的生产,在生产工艺流程中增建了一组三效蒸发器。其配套的辅机——碱液泵的设计由常用的高压头小流量的离心泵改为低压头大流量的轴流泵,以加快蒸发器内碱液循环与提高蒸发器效率。该轴流式碱液泵的工作参数如下: 蒸气室压力:0.35～0.55MPa 溶液室压力:0～0.04MPa 工作温度:一效为110℃;二效为90℃;三效为70℃ 工作介质及含量(kg/m~3): Na_2CO_3+NaOH≥110 Al_2O_3 12 Na_2SO_4 15～22 其余为水 泵轴转速:390r/min
Preface Shandong Aluminum Plant to expand the production of alumina, in the production process to add a group of three-effect evaporator. Its auxiliary equipment - lye pump design from the commonly used high pressure head small flow centrifugal pump to low pressure head large flow axial pump to speed up the evaporator lye circulation and improve the efficiency of the evaporator. The axial flow of lye pump operating parameters are as follows: Steam chamber pressure: 0.35 ~ 0.55MPa Solution chamber pressure: 0 ~ 0.04MPa Operating temperature: one effect is 110 ℃; two effect is 90 ℃; three effect is 70 ℃ working medium And content (kg / m ~ 3): Na_2CO_3 + NaOH≥110 Al_2O_3 12 Na_2SO_4 15 ~ 22 The remaining water pump shaft speed: 390r / min