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Welcome to ZOZEN

ZOZEN is one of the best modern boiler manufacturers in China, our products include steam boilers, hot water boilers and thermal oil heaters. ZOZEN boiler is located in Wuxi, covers 150 thousand square meters of production area, equipped with first-class production equipment, passed the ISO9001:2000 international quality system certification. The company gained the " S " and " U " steel seal from ASME of US.

Customer service

If you run into any problems with the boiler, please contact us directly by email or fill out the online service request. We will do our best to resolve any problems you might have within 24 hours.

In case of special condition, ZOZEN will forward your request to one of its partnered sales representatives depending on the country and state. The local maintenance personnel will arrive at the customer site as soon as possible.


Plant Service Bulletin: Boiler Water Phosphate Chemist

2016-12-14 · sodium phosphates in maintaining the boiler water pH. One of the disadvantages of this treatment is that, on high-pressure drum type units, the detectable concentration of phosphate in the bulk boiler water can decrease with increasing load and pressure, and then return to the original levels on subsequent load or pressure reductions.

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Improved Reliability of High-AVT (High-pH Wate

2013-3-22 · high-pressure system adopted it for the oxygenated treatment (OT) of feedwater/boiler water. In No. 6, feedwater is treated by high-AVT(O), which represents hydrazine-free all-volatile treatment in addition to the use of feedwater with a high pH, while boiler water is treated by PT.

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BOILER CHEMICAL CLEANING PROCEDUR

2014-8-24 · Fill water (first clear water, second demineralised water) to cleaning tank to high level location, cleaning pump fill water to boiler, flush economizer, drum and water wall, drain by opening valves of lower ring header discharge. 5.1.2. Control the drum level above the

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Water Treatment for High Pressure Boilers in Sugar Pla

2011-4-5 · Boiler Water Treatment It is recommended to use coordinated phosphate - pH treatment method for high pressure drum type boilers. This method treatment excludes free caustic from the boiler water. Caustic present in boiler results in ductile-gouging type corrosion. Even if bulk boiler water does not contain large amount of free caustic, there is

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Boiler Water Conductivity Measurement Fundamenta

Boiler Water Conductivity Measurement Fundamentals. As a boiler generates steam, any impurities which are in the boiler feedwater and which do not boil off with the steam will concentrate in the boiler water. Inside the boiler the heat generates steam bubbles inside the water.

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Troubleshooting: Condensate Contamination - Veolia Wat

2015-11-3 · Troubleshooting: Condensate Contamination By James McDonald, PE, CWT Originally Published: Ultrapure Water, July/August 2003, Volume 20, Number 6 In a well maintained, properly operating boiler system, condensate is a relatively high purity water

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pH CONTROL OF BOILER WATER - Spartan Contro

2015-2-17 · A major element of boiler water treatment is controlling corrosion by keeping the boiler water pH slightly alka-line. Alkaline pH causes an oxide film to form on the boiler tube surfaces that protects the base metal from further corrosion and allows breaks in the film to heal efficiently. pH control involves feeding sodium hydrox-

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Water for the Boiler - beta.spiraxsarco.c

Water-tube boiler plant. Water-tube boiler plant is much less tolerant of high TDS levels, and even less so as the pressure increases. This is due to a number of reasons, including: Water-tube boilers have a limited water surface area in the steam drum, relative to the evaporation rate.

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Boiler Chemistry Control and Treatment of Feed Wate

Two basic ways to regulate corrosion in water, are All Volatile Treatment (AVT) and Oxygenated Treatment (OT). Two types of AVT are; i) AVT (R) Using Ammonia (NH3) and as reducing agent like Hydrazine (N 2 H 4), ii) AVT (O) same as AVT ® minus reducing agent i.e. N 2 H 4. Ammonia is commonly used cheaper material to maintain pH in boiler water.

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Boiler feed water - Lennte

The boiler receives the feed water, which consists of varying proportion of recovered condensed water (return water) and fresh water, which has been purified in varying degrees (make up water).The make-up water is usually natural water either in its raw state, or treated by some process before use.

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What is the pH level of boiled water? - Quo

Temperature Dependent of the pH of pure Water If you cool it to 25 C then it's 7.00 . If you don't then it's 6.14 at 100 C. Edit: My answer should include water which is not pure. Consider two cases: Case 1 Pure water which was boiled and then coo

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