首页> 外文会议>23rd New Zealand Geothermal Workshop 2001, 2001, Auckland >CALCITE SCALING FIELD EXPERIMENTS TO 120℃ AT WAIRAKEI
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CALCITE SCALING FIELD EXPERIMENTS TO 120℃ AT WAIRAKEI

机译:WAIRAKEI的钙盐尺度实验到120℃

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Preliminary field experiments were undertaken at Wairakei Geothermal Field to measure calcite scaling between 50 and 120 ℃. The geothermal fluid was saturated with respect to calcite by injecting sodium bicarbonate solutions into the base of a 1m long, 50mm diameter fluidized bed reactor. The reactor was filled with 1.5 kg of calcite with a BET specific surface area- of 0.0695 m~2/g. The experimental technique, with high turbulence, high ratio of volume over surface area, and high supersaturation should have resulted in maximum deposition rates. However, the deposition appeared to be inhibited at lower temperature and thermodynamic calculations overestimated the propensity for scaling.
机译:在怀拉基地热田进行了初步的野外实验,以测量方解石在50至120℃之间的结垢。通过将碳酸氢钠溶液注入1m长,直径50mm的流化床反应器底部,使地热流体相对于方解石达到饱和。用1.5kg方解石填充反应器,BET比表面积为0.0695m 2 / g。具有高湍流,高体积比表面积和高过饱和度的实验技术应能获得最大的沉积速率。但是,在较低的温度下沉积受到抑制,热力学计算高估了结垢的可能性。

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