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Domestic hot water and heating series: gas hot water boiler, vacuum hot water boiler, vertical atmospheric pressure hot water boiler, electric hot water boiler Factory use, high temperature steam: wns fuel gas steam boiler, szs water tube steam boiler, vertical steam boiler, electric steam boiler

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FANGKUAI is founded in 1998, which is a clean fuel boiler enterprise integrating R&D, manufacturing, sales and service. In the past 20 years of development and innovation, the company has grown into a global enterprise, and its products have been exported to more than 80 countries including Russia, Mongolia and Thailand, and have established long-lasting cooperative relations with local enterprises!

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Method of protecting steam boilers against caustic

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θrion Gas Fired Steam Boiler

Capacity:1-20t/h

Rated thermal efficiency: 100-104%

Fixed working pressure: ≤1.6MPa

Applicable fuel:natural gas etc.

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HOT

Gas(oil) Fired Integrated Hot Water Boiler

Capacity:0.7-14MW

Rated thermal efficiency:96-98%

Fixed working pressure:≤1.25MPa

Applicable fuel:Natural gas, light oil, etc.

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H6 Gas Fired Hot Water Boiler

Capacity:0.7-2.8Mw

Rated thermal efficiency: 97.2-106%

Fixed working pressure:0.1MPa

Applicable fuel:Natural gas, etc.

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T7 Vacuum Hot Water Boilerr

Capacity:2.8-7.0Mw

Rated thermal efficiency:≥105.5%

Fixed working pressure:-0.02MPa

Applicable fuel:Natural gas, etc.

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HOT

V6 Gas Fired Hot Water Boiler

Capacity:99Kw

Rated thermal efficiency:97.2-104.4%

Fixed working pressure:1.0MPa

Applicable fuel:Natural gas, etc.

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HOT

Electric Steam Boiler

Capacity:0.5-4.0 t/h

Rated thermal efficiency:98%

Fixed working pressure:≤1.25MPa

Applicable fuel:electric energy

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  • The Evolution of Power Plant Water/Steam Chemistry - Power

    Oct 01, 2012 · Phosphate treatment of drum boilers is still a common method to protect against corrosion, but gone are the days of coordinated and congruent phosphate treatment, where the chemical feed consisted Get Price

  • Maintaining boiler safety - Plant Engineering

    Feedwater is treated to protect the boiler from two basic problems: buildup of solid deposits on the waterside of the tubes and corrosion. Water that enters the boiler is vaporized to steam, leaving solids behind in the form of scale or buildup in the areas of highest heat transfer rate.Get Price

  • (PDF) Boilers and Steam Lines Chemical Cleaning | Prem

    Several methods can be used to packages are as below: determine the need to chemically clean a boiler. The high heat Operating pressure -120.5 kg/cm2, Total combined steam flux boiler tube surfaces mainly consist of magnetite and generation with all 3 …Get Price

  • How to turn off a gas boiler for conservation: methods

    The main method of protecting pipe systems of boilers from corrosion is the creation and preservation of a protective oxide film (passivation) on the metal surface from the side of the circulating water.The best protective properties are possessed by the Fe304 magnetite film, which prevents the penetration of oxygen and hydrogen to the metal Get Price

  • Take Better Care Of Your Low-Pressure Boiler | Chemical

    Feb 08, 2021 · On-line and grab sample methods are available to track corrosion products and determine the effectiveness of pH-conditioning and oxygen-control methods. Steam generator protection during outages also is important; "Plant Combats Corrosion in Idled Boilers," provides some insights on this.Get Price

  • Treatment & Control - BOILERSMITH LTD.

    The process of treating water for steam boilers, which comprises supplying thereto a molecularly dehydrated phosphate radical which is rehydrated in the water in …Get Price

  • Boiler Corrosion | Major Causes of Corrosion

    Corrosion in industrial boilers is a phenomenon in which the oxygen that is dissolved in the water inside the boiler reacts with the metal of the steam boilers. Ferrous component of the metal reacts with the atmospheric oxygen in the water to undergo oxidation. This oxidation results in the formation of ferrous oxides.Get Price

  • Stationary Engineers and Boiler Operators : Occupational

    Sep 08, 2021 · Stationary engineers and boiler operators typically learn their work through long-term on-the-job training under the supervision of an experienced engineer or operator. Trainees are assigned basic tasks, such as monitoring the temperatures and pressures in the heating and cooling systems and low-pressure boilers.Get Price

  • Caustic Corrosion - an overview | ScienceDirect Topics

    The addition of sodium hydroxide to the boiler/evaporator water has to be carefully controlled to reduce the risk of CG in the HP evaporator and carryover into the steam, which could lead to damage of steam circuits and turbine due to stress corrosion cracking.Get Price

  • maintenance and part replacement - G.L.A. Water

    these factors. Protection that involves removing the oxygen from the boiler water and maintaining an alkaline pH throughout the system to prevent corrosion is known as a wet lay-up procedure. Dry lay-up procedure, on the other hand, involves draining the boiler and its auxiliaries of all water and maintaining little, if any, humidity in the system.Get Price

  • Water Handbook -Boiler Deposits: Occurrence And Control | SUEZ

    Because of these conditions, high-pressure boilers are prone to caustic attack. Low-pressure boilers that use demineralized water and condensate as feedwater are also susceptible to caustic attack. There are several means by which boiler water can become highly concentrated. One of the most common is iron oxide deposition on radiant wall tubes.Get Price

  • Volatile Corrosion Inhibitors and Boiler Water Additives

    Nitrates have been used in the past as part of the "boilout" compound to clean down boilers as a precaution against caustic embrittlement (Murphy, 1978), but this method is now considered obsolete. MARKET INFORMATION About six volatile amines are in general use as boiler water additives (Hollingshad, 1978).Get Price

  • Internal Water Treatment for Boiler Water Systems

    This method of water treatment is employed to meet following basic objectives: Provide protection against corrosion, scaling and foaming. Conditioning of sludge or any other suspended substance (like iron oxide) in the boiler system. Remove oxygen content from the boiler feed water and maintain sufficient alkalinity for fighting against corrosion.Get Price

  • Caustic Embrittlement - E. W. Colbeck, L. Powell, S. H

    The paper contains the results of experimental work on caustic embrittlement. The type of apparatus chosen was based on one used in recent American work carried out by Straub and Bradbury (1938). In this, the solution to be tested is contained in a hollow sealed tubular specimen, heated to any desired temperature in the steam boiler range, and Get Price

  • Overpressure Protection of Pressure Vessels

    Section I: Overpressure protection is provided by the boiler manufacturer. Documented on boiler data report: (for example P2 form) and P7 form when necessary. Section IV: Overpressure protection requirements are defined by boiler manufacturer who applies safety or safety relief valve capacity (minimum) toGet Price

  • Chemistry Parts: Steam Boiler

    Feb 26, 2013 · Steam Boiler Role of Boilers in Plant Operation (Steam Generation) the proper selection of filming amine programs. In addition, hydrazine has been injected into condensate systems to protect against oxygen attack. Caustic gouging typically occurs under deposits due to the concentration of sodium hydroxide via evaporation of the boiler Get Price

  • Testing Alkalinity In Boiler Water - Taylor Technologies

    Testing Alkalinity In Boiler Water. Alkalinity is a key control parameter for boilers (outside of the prescribed operating range, it can lead to corrosion, caustic metal embrittlement, and carryover) and cooling water systems (where it has a significant effect on chemical treatments for scale and corrosion inhibition).Get Price

  • Waste Heat Boiler Preparation - Banks Engineering

    Waste Heat Boiler Preparation (Courtesy of Rentech Boiler Systems Inc.). Hydrostatic Testing. The equipment has been hydrostatically tested to a minimum of 1½ times the design pressure, in the factory, and copies of the Manufacturer's Data report, signed by the Authorized Inspector witnessing and evidencing the test has been forwarded to all jurisdictional bodies as well as to …Get Price

  • How to turn off a gas boiler for conservation: methods

    The main method of protecting pipe systems of boilers from corrosion is the creation and preservation of a protective oxide film (passivation) on the metal surface from the side of the circulating water.The best protective properties are possessed by the Fe304 magnetite film, which prevents the penetration of oxygen and hydrogen to the metal Get Price

  • US1997256A - Treatment of steam boiler water - Google Patents

    Water Handbook - Preboiler & Industrial Boiler Corrosion Control | SUEZGet Price

  • Boiler Water Treatment - Drew Marine

    AGK-100 is a boiler and feed water treatment that provides an effective and easily applied program for the protection of all low/medium pressure exhaust gas economizers and auxiliary boilers using distilled water make-up. AMERSITE CHZ is an all-volatile, liquid oxygen scavenger and corrosion inhibitor for use in low-, medium-, and high-pressure Get Price

  • PWTB Kefid Industrial Water Treatment Procedures

    to properly operate boiler and cooling systems and maintain the waterside surfaces. The procedures improve maintenance, efficiency, reliability, treatment, system life and safety of boiler and cooling systems. The boiler and cooling systems include steam boilers, hot water boilers, chilled water systems, cooling towers and other industrial Get Price

  • (PDF) Boilers and Steam Lines Chemical Cleaning

    Feb 10, 2011 · In the case of concentration of salts underneath the steam film, steam blanketing can also cause acid and caustic corrosion and even lead to hydrogen damage (see Part II, Chapter 8). Steam blanketing can be prevented either by reducing the heat load at these sites, that is by applying thermal insulation or by structurally improving the circulation in the tubes concerned.Get Price

  • The FINEST way of water treatment! - FINEAMIN

    For a undisturbed running boiler plant not only a purified water is necessary also the protection of the water and steam circuit against corrosion and deposits is needed. Conventional chemical treatment products and dosing chemicals contain among others phosphate, sulfite, ammonic, caustic soda or hydrazine. The additionalGet Price

  • Water Treatment for High Pressure Boilers in Sugar Plant

    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 a great potential for caustic to concentrate and cause corrosion. Internal metal oxide deposits provide sites Get Price

  • Water Handbook - Preboiler & Industrial Boiler Corrosion

    Proper treatment of boiler feedwater effectively protects against corrosion of feedwater heaters, economizers, and deaerators. The ASME Consensus for Industrial Boilers (see Chapter 13) specifies maximum levels of contaminants for corrosion and deposition control in boiler systems. The consensus is that feedwater oxygen, iron, and copper Get Price

  • Water Handbook - Preboiler & Industrial Boiler Corrosion

    Filtration is the essential first step before the chemical treatment and conditioning of the boiler feedwater. Filtration removes or minimizes all types of suspended solid impurities. If rust, sand (silica) etc. are not filtered out, they lead to severe scale formation, which is difficult to clean and reduce boiler efficiency.Get Price

  • Chemical Treatment Requirements for Steam and Hot Water

    Jun 12, 2017 · In firetube boilers, caustic attack is frequently observed at the ends of the boiler tubes when refractory-backed boilers operate for extended periods at maximum output. The white hot refractory promotes steam blanketing or caustic gouging right at the rolled tube ends. Carryover refers to the contamination of the steam with boiler water. It is Get Price

  • US1997256A - Treatment of steam boiler water - Google …

    The method of protecting the metal of a steam boiler against subsequent caustic embrittlement which comprises boiling in the boiler while still new an aqueous solution of sodium 0 sulfate containing at least 10 grains thereof per gallon at least long enough to fill the seams of the boiler with a deposit of sodium sulfate.Get Price

  • Guides and Recommended Procedures For Water Treatment

    4.7 Steam purity 19 4.8 Role of boiler operation 20 4.8.1 Operation scheduling 20 4.8.2 Removal of boiler from operation 21 4.9 Prevention of corrosion in idle boilers 22 4.9.1 Storage method selection 22 4.9.2 Dry method 23 4.9.3 Wet method A 23 Caustic embrittlement or inter crystalline cracking in boilers isGet Price

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