LYJY-LSY磷酸鹽加藥裝置的工作原理和使用場合
常用加藥裝置分類
1、氨加藥系統(tǒng)
加氨系統(tǒng)可實現(xiàn)全自動控制，除手動配制外，還可自動控制氨溶液配制。當(dāng)溶液箱液位低于設(shè)定值時，溶液箱進水閥自動開啟，液位高時自動關(guān)閉。除手動控制外，加氨量也可自動控制。通過PLC程控系統(tǒng)進行PID計算后，由變頻器控制VAREM氨計量泵的加氨量達到設(shè)定值，達到自動加藥的目的。
2、鍋爐水磷鹽分配系統(tǒng)
配制磷酸鹽溶液時，將磷酸三鈉直接加入溶液罐加藥處，啟動攪拌機溶解。沃特桑尼LYJY-LSY磷酸鹽加藥裝置除手動控制外，磷酸鹽用量的控制也可全自動。通過PLC程序控制系統(tǒng)進行PID計算，變頻器控制VAREM計量泵的計量量，達到自動加藥的目的。
LYJY-LSY磷酸鹽加藥裝置的適用范圍
1、火電工業(yè)鍋爐水處理系統(tǒng)、循環(huán)冷卻系統(tǒng)、原水預(yù)處理及廢水處理系統(tǒng)；
2、石油化工鍋爐水處理系統(tǒng)、循環(huán)冷卻系統(tǒng)、化學(xué)添加劑加藥系統(tǒng)、廢水處理系統(tǒng)；
3、城市供水和污水處理系統(tǒng)；
4、其他相關(guān)行業(yè)的液體加藥系統(tǒng)。
沃特桑尼LYJY-LSY磷酸鹽加藥裝置的工藝原理是鍋爐給水中鈣鎂的硬度在高溫環(huán)境下會發(fā)生化學(xué)反應(yīng)，或濃縮結(jié)晶形成不溶性水垢，牢固附著在鍋爐受熱面上。這種水垢是熱的不良導(dǎo)體，會阻礙熱傳導(dǎo)。嚴重時，可能發(fā)生鍋爐爆管事故。此外，還會誘發(fā)和加劇垢下金屬的化學(xué)腐蝕，造成嚴重危害。雖然鍋爐凝結(jié)水和給水經(jīng)過了嚴格的軟化脫鹽處理，但仍有少量鈣鎂硬度進入鍋爐水中。如果這部分硬度不處理，結(jié)垢也會對鍋爐的安全運行構(gòu)成威脅。目前，在鍋爐水中加入磷酸鹽是比較合適的處理方法。反應(yīng)如下：10ca2++6po4+2OH--CA10（OH）2（PO4）6（堿式磷酸鈣）堿式磷酸鈣是一種軟水渣，隨鍋爐排污容易排出，不會粘附在鍋爐上形成水垢。
Working principle and application of lyjy-lsy phosphate dosing device
Classification of common dosing devices
1. Ammonia dosing system
In addition to manual preparation, the ammonia solution preparation can also be controlled automatically. When the liquid level of the solution tank is lower than the set value, the water inlet valve of the solution tank will open automatically, and close automatically when the liquid level is high. In addition to manual control, the amount of ammonia can also be automatically controlled. After PID calculation by PLC program control system, the frequency converter controls the ammonia dosage of varem ammonia metering pump to reach the set value, so as to achieve the purpose of automatic dosing.
2. Phosphorus distribution system of boiler water
When preparing phosphate solution, add trisodium phosphate directly to the dosing place of solution tank, and start the mixer to dissolve. In addition to manual control, the control of phosphate dosage can also be fully automatic. PID calculation is carried out by PLC program control system, and the metering quantity of varem metering pump is controlled by frequency converter to achieve the purpose of automatic dosing.
Application scope of lyjy-lsy phosphate dosing device
1. Thermal power industrial boiler water treatment system, circulating cooling system, raw water pretreatment and wastewater treatment system;
2. Petrochemical boiler water treatment system, circulating cooling system, chemical additive dosing system, wastewater treatment system;
3. Urban water supply and sewage treatment system;
4. Liquid dosing system of other related industries.
The process principle of watersonny lyjy-lsy phosphate dosing device is that the hardness of calcium and magnesium in boiler feed water will undergo chemical reaction under high temperature environment, or form insoluble scale by concentration and crystallization, which is firmly attached to the boiler heating surface. This scale is a poor conductor of heat and will hinder heat conduction. In serious cases, the boiler tube explosion accident may occur. In addition, it can also induce and intensify the chemical corrosion of the metal under the scale, causing serious harm. Although the condensate and feed water of the boiler have undergone strict softening and desalination treatment, a small amount of calcium and magnesium hardness still enters into the boiler water. If this part of hardness is not treated, scaling will also pose a threat to the safe operation of the boiler. At present, adding phosphate into boiler water is a suitable treatment method. The reaction is as follows: 10ca2 + + 6po4 + 2OH -- CA10 (OH) 2 (PO4) 6 (basic calcium phosphate) basic calcium phosphate is a kind of soft water slag, which is easily discharged with boiler blowdown and will not adhere to the boiler to form scale.