Study on a new type of utmost carbonate hardness measuring instrument and its evaluation method 一种新型极限碳酸盐硬度测定仪及评价方法研究
The research work is to measure the antiscaling effect and dosage of each component and try to rind out the synergic effect of these organic chemicals and sodium carbonate in experimental boiler, with feed water of total hardness of 2~ 8 milligram equivalent per liter. 本工作在给水硬度为2~8mgN/L水质中,测定了单个药品的阻垢效果和投量,以及它们与碳酸钠复合使用的效果。
Some effective methods have been given, for instance, decreasing the carbonate's hardness for the scale of recirculated water, thermal deoxidization, adding inhibitor and covering the metal surface with coating materials for the corrosion control of the system. 对于循环水结垢应采用降低循环水中的碳酸盐硬度和加阻垢剂;对于循环水系统的腐蚀可采用热力除氧、投加缓蚀剂及使用涂料覆盖于金属表面等方法。
Besides, a certain proportion of sodium bicarbonate to acid ammonium carbonate is conducive to porosity of product structure and the reduction of product hardness. 此外,一定比例的碳酸氢钠和碳酸氢铵混合作为化学膨松剂有利于产品结构疏松多孔,降低产品硬度。