磷酸三鈉在鍋爐中作為一款化學(xué)除垢劑使用，為什么會(huì)這樣呢？下面氫氧化鉀廠家就來(lái)為大家講解一番。
Trisodium phosphate is used as a chemical scale remover in boilers. Why is this? Now the potassium hydroxide manufacturer will explain it to you.
工業(yè)磷酸三鈉為白色或微黃色結(jié)晶，但不溶于二硫化碳和乙醇，水溶液呈堿性，需要注意的是它對(duì)人體皮膚會(huì)有一定侵蝕作用。１％水溶液PH值為12.1，如在干燥的空氣中易風(fēng)化。在100°C時(shí)即失去十一個(gè)結(jié)晶水，212°C以上時(shí)即變?yōu)闊o(wú)水物Na3PO4，能與酸或鈣，鐵，鎂的鹽類起復(fù)分解反應(yīng)。
Industrial trisodium phosphate is white or yellowish crystal, but it is insoluble in carbon disulfide and ethanol. The aqueous solution is alkaline. It should be noted that it will have a certain corrosive effect on human skin. The pH value of 1% aqueous solution is 12.1, which is easily weathered in dry air. Eleven crystal water is lost at 100 ° C, and becomes anhydrous Na3PO4 at above 212 ° C, which can reacts with acid or calcium, iron and magnesium salts.
堿煮除垢，堿煮混合液的藥品為氫氧化鈉、碳酸鈉和磷酸三鈉。配比濃度為氫氧化鈉0.3-0.5%+磷酸三鈉0.5-1%（碳酸鈉的用量是磷酸三鈉的2-3倍）。緩慢升壓到額定壓力的一半，期間保持高水位煮24-48小時(shí)，煮后放掉堿液。
The drugs of alkali boiling mixture are sodium hydroxide, sodium carbonate and trisodium phosphate. The ratio concentration is 0.3-0.5% sodium hydroxide + 0.5-1% trisodium phosphate (the dosage of sodium carbonate is 2-3 times that of trisodium phosphate). Slowly increase the pressure to half of the rated pressure, keep the high water level for 24-48 hours, and drain the lye after cooking.

用清水沖洗只到出水PH值小于9.鍋爐磷酸根過(guò)低，其實(shí)對(duì)鍋爐的影響不會(huì)很大，磷酸根的作用是在鍋筒內(nèi)形成松散的磷酸鈣或者磷酸鎂，它們比較容易浮在鍋水的表面，所以要通過(guò)表面排污來(lái)排除，也就是說(shuō)可以阻礙在鍋爐的管內(nèi)壁形成難溶性的水垢，實(shí)際上是一種阻垢劑。
Wash with clean water until the pH value of the effluent is less than 9. The phosphate radical of the boiler is too low, which will not have a great impact on the boiler. The function of phosphate radical is to form loose calcium phosphate or magnesium phosphate in the boiler drum, which is relatively easy to float on the surface of the boiler water, so it should be discharged through surface sewage discharge, that is to say, it can prevent the formation of insoluble scale on the inner wall of the boiler pipe, which is actually a scale inhibitor.
除此之外，在爐外可以加入磷酸三鈉作為化學(xué)除垢劑。就是這個(gè)原因。但是它不會(huì)因?yàn)檫@個(gè)而引起水冷壁管的破裂。更多注意事項(xiàng)就來(lái)我們網(wǎng)站http://sihu74.com咨詢了解吧。
In addition, trisodium phosphate can be added outside the furnace as a chemical scale remover. That's why. But it will not cause the rupture of the water-cooled wall tube because of this. Come to our website for more precautions http://sihu74.com Consult and understand.