571315 OXYGEN CONTROL 25 LTR

Directions for use

NALFLEET™ Oxygen Control can be used in all boiler systems, from low to high pressures and in conjunction with mechanical de-aeration systems. The treatment combines with dissolved oxygen to form water and inert nitrogen gas, thus effectively removing O2 from the water. No solid materials are produced, so there is no contribution to the increase in total dissolved solids -a critical factor in high pressure boilers. The removal of dissolved oxygen is vital for preventing oxygen pitting and corrosion in boilers. NALFLEET™ Oxygen Control reacts with ferrous and non-ferrous oxides to prevent general corrosion.Ferric oxide (red rust, Fe2O3) is converted to magnetite (black iron oxide, Fe3O4), which is a tough corrosion resistant oxide which protects the metal surface. The term for this is 'passivating' the surfaces, so that they are protected from further corrosion.

Dosing method

For optimum protection, NALFLEET™ Oxygen Control should be fed continuously into the boiler feed line, after the feed pump recirculating valve, using an automatic dosing systems. For steam turbine systems, NALFLEET™ Oxygen Control can be dosed into the cross over between the H.P. and L.P. turbines or the storage section of the deaerator for full protection.

Dosage and control

The objective is to maintain a hydrazine residual between 0.05-1.0 ppm depending on operating pressure and boiler design. Actual consumption is determined under operating conditions.

Recommended Control Limits in ppm. These are typical values. Follow boiler manufacturers guidelines where required.

Wet lay-up

When wet lay-up of the boiler is required then a minimum dosage of 1.25 litres/tonne of boiler water is required.

Sampling and testing

A representative sample of boiler water should be drawn for analysis daily. The sample should always be taken from the same point after blowdown, cooled and tested immediately. Follow the WSS Test Kit instructions and log the results in Waterproof. The results should be sent to WSS as stated in the Waterproof instructions.
It is important that regular testing is carried out to ensure levels of treatment are correct.

產品特性

• NALFLEET™ Oxygen Control 是一種易於使用的液體產品

• 對電導率沒有貢獻

• 保護鍋爐 ，蒸汽管道 ，冷凝水管線和給水管道免受腐蝕

• 催化劑快速作用

• 輔助機械除氣

• 簡單測試以確定藥量水平

• NALFLEET™ Oxygen control 可用於調節用於在潮濕條件下鋪設鍋爐的水 。

優勢

• 經濟實惠

• 減少鐵和銅的腐蝕 ，提高係統壽命和可靠性

• 鈍化鍋爐中的金屬

Product Number                           Product name

571315                                       OXYGEN CONTROL 25 LTR

化驗盒聯氨 ，P堿度 ，氯化物和pH試紙

Product Number                           Product name                     Description

555490                                       SPECTRAPAK 312            Hydrazine

739490                                       SPECTRAPAK 315            P Alkalinity,Chloride and pH

使用說明

NALFLEET™ Oxygen Control 可用於所有鍋爐係統 ，從低壓到高壓 ，並與機械除氣係統配合使用 。該處理與溶解氧結合形成水和

惰性氮氣 ，從而有效地從水中去除O2 。不產生固體材料 ，因此對總溶解固體的增加沒有貢獻

- 高壓鍋爐的關鍵因素 。去除溶解氧對於防止鍋爐中的氧氣點蝕和腐蝕至關重要 。NALFLEET™氧氣控製與黑色金屬和有色金屬氧化物反應 ，防止全麵腐蝕 。氧化鐵（紅鏽 ，Fe2O3）轉化為磁鐵礦（黑色氧化鐵 ，Fe3O4） ，這是一種堅韌的耐腐蝕氧化物 ，可保護金屬表麵 。這個術語是“鈍化”表麵 ，以防止它們進一步腐蝕 。

加藥方法

為了獲得最佳保護 ，NALFLEET™ Oxygen Control應使用自動配料係統在進料泵循環閥後連續送入鍋爐給水管路 。對於蒸汽輪機係統 ，可以將NALFLEET™ Oxygen Control劑加入到H.P.之間的交叉處 。和L.P.渦輪機或除氧器的儲存部分 ，以提供全麵保護 。

劑量和控製

目的是根據操作壓力和鍋爐設計將Hydrazine殘留量保持在0.05-1.0ppm之間 。實際消耗量根據運行條件確定 。.

HYDRAZINE TEST RESULT ppm

推薦的控製限值 ，單位為ppm 。這些是典型值 。

根據需要遵循鍋爐製造商的指導

當需要對鍋爐進行濕式鋪設時 ，需要最低劑量為1.25升/噸的鍋爐水 。

采樣和測試

應每天抽取一份代表性的鍋爐水樣本進行分析 。排汙後應始終從同一點取樣 ，冷卻並立即進行測試 。

按照WSS測試套件說明進行操作 ，並將結果記錄在防水中 。結果應按照防水說明中的說明發送至WSS 。

重要的是進行定期測試以確保治療水平正確 。