PBTCA和HEDP低温条件下碳酸钙阻垢性能评价

摘要

By static experiments,the calcium carbonate scale inhibition capability of PBTCA and HEDP under low temperature conditions(at 2-15℃)has been investigated. The results show that PBTCA and HEDP have good scale inhibition capability for calcium carbonate at 2-15℃.The initial Ca2+and alkalinity have comparatively great influen-ce on the scale inhibition capability of PBTCA and HEDP.When Ca2++alkalinity concentration increases from(500+600)mg/L to(800+800)mg/L,the scale inhibition rate of PBTCA is dropped from 100% to 65% and the scale inhi-bition rate of HEDP is dropped from 100% to 60%.The presence of PO43-,Zn2+,turbidity,etc. has less influence on scale inhibition effect.%通过静态阻垢试验研究了PBTCA和HEDP在低温条件下(2~15℃)的阻碳酸钙垢性能.结果表明:PBTCA和HEDP在2~15℃下的阻碳酸钙垢性能良好.初始钙离子+碱度对PBTCA和HEDP的阻垢性能影响较大,当钙离子+碱度从(500+600)mg/L提高至(800+800)mg/L时,PBTCA和HEDP的阻垢率从100%分别降至65%、60%.PO43-、Zn2+和浊度等的存在对PBTCA和HEDP阻垢效果的影响较小.