1) hard limiting
硬极限
2) hardness limit
硬度极限
4) limited carbonate hardness method
极限碳酸盐硬度法
1.
The limited carbonate hardness method and its use in the testing and ev aluating of scale inhibitors are introduced, and the inhibition efficiencies of scale inhibitors, such as PAPEMP,HPMA(solvent is water), HPMA(solvent is oil), T-225, HEDP, PBTCA, HPAA, are evaluated by it.
着重介绍了极限碳酸盐硬度法及其在阻垢剂评价筛选中的应用,并对PAPEMP,HPMA(水溶出),HPMA(油溶出),T-225,HEDP,PBTCA,HPAA等阻垢剂的阻垢性能进行了评定。
2.
The inhibition pefformances of five fouling inhibitors including HEDP,PBTCA,ATMP,T-225 and YSW-301 were evaluated by the limited carbonate hardness method.
采用极限碳酸盐硬度法对阻垢剂HEDP,PBTCA,ATMP,YSW-301和T-225进行了阻垢性能评价。
5) utmost carbonate hardness measurement instrument
极限碳酸盐硬度测定仪
1.
The optimal evaluation temperature of the utmost carbonate hardness measurement instrument is 70 ℃.
开发了一种用于阻垢剂性能评价的新型极限碳酸盐硬度测定仪及评价方法,对5种常用阻垢剂的评价结果和静态容量瓶法及浓缩法评价结果相比性能优劣趋势相同,均为PBTCA>ATMP>HEDP>YSW-301>T-225;极限碳酸盐硬度测定仪的最佳评价温度为70℃;当达到极限碳酸盐硬度时,水样的pH将突降,电导率变化趋于平缓。
补充资料：非碳酸盐硬度
分子式：
CAS号：
性质：又称为永久硬度。由硫酸钙、氯化钙等微溶于水，加热水时不产生沉淀的无机化合物构成的水硬度。
CAS号：
性质：又称为永久硬度。由硫酸钙、氯化钙等微溶于水，加热水时不产生沉淀的无机化合物构成的水硬度。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条