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《节能》杂志社编辑同志: 我们四川省射洪县缫丝厂在供热方面使用的是两台KZL4—13型锅炉。近期,由于使用自来水厂深井水,原水碱度4毫克当量/升以上,炉内水连续烧两天以后,碱度迅速上升到30～40毫克当量/升左右,超过了炉内碱度18毫克当量/升以下的规定。如果单纯靠排污来降低炉内碱度,实在是耗煤量太大。目前,我们对这个问题有两种看法,一种认为碱度超高会使炉体出现苛性碎化;另一种,则认为已经烧过三、四年的锅炉,炉内已有结垢,炉水碱度既使高一点儿也无妨,它有疏松结垢的作用,其根据是,每当煮炉除垢时还要加进相当数量的碱,才能达到除垢的目的。
Energy saving magazine Editorial comrades: We Sihong County, Sichuan Province, silk factory in heating use is two KZL4-13 type boiler. Recently, due to the use of deep well water in a waterworks, the basicity of the raw water is more than 4 milliequivalents / liter. After two consecutive days of burning the water in the furnace, the alkalinity rapidly rises to about 30 to 40 milliequivalents / liter, exceeding the alkalinity of 18 milligram Equivalent / liter The following rules. If you simply rely on sewage to reduce the alkalinity of the furnace, it is coal consumption is too large. At present, we have two opinions on this issue. One is that the high alkalinity will cause caustic smelting in the furnace body; the other one thinks that the boiler, which has been burned for three or four years, has been fouled in the furnace, Alkalinity furnace even a little higher, no harm, it has the role of loose scaling, which is based, whenever the boiler descaler but also add a considerable amount of alkali, in order to achieve the purpose of descaling.