向冬季严寒地区居民住宅区热水采暖供热系统投加JHH— 70 2缓蚀阻垢剂,使用四个月运行效果显著。缓蚀率达 96 4%,粘附速率降低到 1 7mcm,药剂费用仅 0 0 1 5元 /m³。经对供热末端 50组不热或微热供热单元调查显示,使用JHH— 70 2后有 30 %的供热单元恢复了正常的供热,55%以上的供热单元用户反映有效果。

Add corrosion and scale inhibitor JHH-702 into hot water heating system for four months, the rate of corrosion inhibition is 96.4%,the rate of adhesion is lowered to 17 mcm, the cost of chemical only is 0.015 yuan/m³. By the investigation of fifty groups of not hot or slightly hot heat supply units, the results show that after JHH-702 has been used 30% heat supply units return to normal, more than 55% units achieved results.