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571356 ROCOR NB LIQUID/unitor/nalfleet冷却水处理剂

Rocor NB Liquid 为一种液态、硝酸盐及硼酸盐为基础的有机性防腐抑制剂,用于封闭式冷却水系统中。
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产品描述

液态冷却水防腐剂           ROCOR  NB  LIQUID

产品属类:653            产品编号:571356

产品说明:

Rocor NB Liquid 为一种液态、硝酸盐及硼酸盐为基础的有机性防腐抑制剂,用于封闭式冷却水系统中。

使用说明及添加比例:

Rocor NB Liquid 为一种高效率的防腐抑制剂,用于一般铁金属及非铁金属的冷却水系统中。

有些铝金属可使用本剂,而有些则不能达到正确的防腐作用

本产品在系统中形成一层稳定性高的防氧薄膜可因抑制电解作用产生的腐蚀铁销。

Rocor NB Liquid经过多次的测试后,发现对冷却水中非铁金属物,如密封圈、亲垫、迫紧、管子、垫圈等,绝对无害。

此剂为碱性,可抑制酸性腐蚀而造成坑洞。如不小心添加此剂过量,亦可控制其碱性,而使冷却水的PH值不过高。保护金属不受酸碱的腐蚀。

如冷却水中含有油污及水垢,应在使用此剂前先清除之。WILHELMSEN也有这一方面的清洁剂,如用Seaclean 去油污,而用Descalex 清水垢。

如果船只在寒带地区抛锚停航,有时需加入防冻剂。而Rocor NB Liquid应可与防冻剂一起使用。

如冷却水处理剂含有镀锌的成份,应在使用此剂之前,以Descalex或Descaling Liquid清洗之。

添加方式:

Rocor NB Liquid应添加于适当的地点进入冷却水系统中,如加进膨胀水柜中,必须确定有良好的循环。

取样及化验:

Wilhelmsen 冷却水化验箱309可供应必需的化验工具。

从冷却水取得样水后,立即从事化验(请依照化验箱所列明的程序),且记录结果于Wilhelmsen 提供的化验簿上,此化验簿应尽快送到Wilhelmsen的负责地点以便检阅。

使用下页之添加比例表以调整此剂用量而得到适当的控制。每星期至少化验一次确保此剂的正确控制是很重要的。


优点、功能及应用

●本剂为液体,易于使用。

●形成一层防氧薄膜,可抑制因电解作用而产生之腐蚀。

●有效的防止腐蚀。

●适用于管子、垫圈及密封圈。

●适用于各种不同的防冻剂。

●简易的化验方式。

●本剂可适用于各种不同型式的封闭式冷却水系统中。

—柴油机冷却水系统

—压缩机冷却水系统

—中央控制冷却水系统

—热水加热系统

—其他副机的冷却水系统

剂量及控制:

未曾使用的冷却水系统的最初添加量为9公升的Rocor NB Liquid对1000公升的纯水。可使处理之水达到1000ppm的亚硝酸的最低要求。

下列的添加比例表是为方便计算Rocor NB Liquid的使用量,而控制处理剂在一处合适的位置~位于最低(1000ppm的    NO2)与最高(1440ppm的NO2)之间。

正常的亚硝酸范围:1000~2400ppm的NO2(亚硝酸)

亚硝酸(NO2 ppm )                   0  180  360 540  720900 1080 12601440 -2400

Rocor NB Liquid公升/1000公升的水13.0 11.3 9.7 8.1  6.5 4.9  3.3  1.7     0

当Rocor NB Liquid依上述建议量添加时,因其内含有缓冲剂而维持PH值,在合适的范围内。正常的PH值应维持在8.3~10之间。

冷却水的品质应依从柴油机制造商的建议。总杂质(氯盐)的含量应保持在低档,大多数的柴油机制造商推荐的氯盐含量最高不超过50ppm。

基于上述因素,Wilhelmsen 建议补给新水时应用蒸馏水。

Product Group: 653 Product number: 571356
General description
NALFLEET Rocor NB Liquid is a liquid, nitrite/borate based
compound with organic corrosion inhibitors for use in closed
cooling water systems.
Features
Liquid product, easy to use
By forming an oxide film on the metal surfaces electrolytic
corrosion is prevented
Effective against cavitation and erosion
Compatible with hoses, gaskets and seals
Benefits
Approved by major diesel engine manufacturers
Simple control test
The product can be used for corrosion inhibition in many types of
closed recirculation systems such as:
Diesel engine cooling water systems
Compressor cooling water systems
Centralised cooling systems
Hot water heating systems
Auxiliary machinery cooling systems
Ordering information
Product number Product name
571356 ROCOR NB LIQUID 25 LTR
Accessories
Test Kit for Nitrite, Chloride and pH.
Product Number Product name
739466 SPECTRAPAK 309
Approvals
Approved by all major engine manufacturers
Home / Marine Chemicals / Water Treatment Chemicals / Cooling Water Treatment / Rocor NB Liquid 25LTR
Approved by the Norwegian National Institute of Public Health for the use in systems where cooling water is
used for heating purpose in evaporators
Directions for use
NALFLEET Rocor NB Liquid is a highly effective corrosion inhibitor for the common ferrous and non-ferrous
metals in cooling water systems. The stable oxide film that is formed prevents corrosion caused by electrolytic action
between dissimilar metals used in the system. NALFLEET Rocor NB Liquid has been field tested and found to
have no detrimental effects on non metallic substances such as seals, glands, packing, hoses, gaskets etc., normally
used in these systems. The compound is alkaline and so will suppress acid corrosion, which would otherwise result
in corrosion damage such as pitting. However, the alkalinity control is such that even if the product is accidentally
overdosed, the pH of the water will remain within limits. The metals which would be affected by extremes of alkalinity
or acidity are protected. In cases where systems are contaminated with oil and/or scale they should be cleaned
before starting to apply NALFLEET Rocor NB Liquid. There are suitable WSS products to carry out the cleaning.
Degreasing should be carried out using UNITOR Seaclean Plus and descaling by using UNITOR Descalex.
Refer to Water Treatment handbook. The use of antifreeze is sometimes required if the vessel is to be laid up in cold
areas and so NALFLEET Rocor NB Liquid can be used in conjunction with antifreeze products. If the system
contains zinc galvanized parts, it is advisory to clean the system with Descalex prior to commencing the treatment.
NALFLEET Rocor NB is not suitable for use in cooling systems containing aluminium components.
Dosing method
NALFLEET Rocor NB Liquid should be dosed to a suitable point in the system. If the expansion tank is used then
adequate circulation must be assured.
Sampling and testing
The Spectrapak Test Kit provides the necessary equipment to carry out the control tests. Obtain a representative
sample of the cooling water. Carry out the tests immediately after sampling (following the instructions given in the
Test Kit) and log the results in Waterproof. The results should be sent to WSS as stated in the Waterproof
instructions. Use the dosage chart overleaf to adjust treatment to obtain the optimum level. It is important that testing
is carried out at least once per week, to ensure levels of treatment are correct.
Dosage and Control
Initial dosage for an untreated system is 9 litres of NALFLEET Rocor NB Liquid/1000 litres of untreated distilled
water. This will bring the treatment up to the minimum level of 1000 ppm nitrite. The dosage chart given below is for
convenience in calculating the amount of NALFLEET Rocor NB Liquid required to bring the treatment level to the
suitable point between the minimum and maximum - this being 1440 ppm nitrite.
Normal nitrite limits: 1000-2400 ppm nitrite (NO2)
Nitrite (as PPM NO2) 0 180 360 540 720 900 1080 1260 1440 - 2400
NALFLEET Rocor NB Liquid/1000 ltr 13,0 11,3 9,7 8,1 6,5 4,9 3,3 1,7 0
N.B.Buffering agents in NALFLEET Rocor NB Liquid maintain pH values within suitable limits when the product is
dosed as recommended. Normal pH should be maintained between 8.3 and 10 by the treatment. The engine
manufacturer's recommendations for water quality should always be complied with.
Chloride levels should always be as low as possible. Most engine manufacturers recommend a maximum of 50 ppm
chlorides. For this reason, Wilhelmsen Ships Service recommends the use of distilled water as make-up.
Documentation
ROCOR NB LIQUID 25 LTR
Further Technical Data
Form Liquid
Appearance Red
Density 1,1
pH 9
Non Compatible Avoid contact of neat product with zinc and aluminium.

 

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