Through this webpage, choose online customer service communication, or message board. Leave your needs and get limited time discounts, up to 10% off, saving you a fortune. This discount has an indefinite period, and places are limited on a first-come, first-served basis.
We support various payment methods:
T/T payment
VISA
paypal
MasterCard
Alipay etc
Save time in your buying process.
The company's products have passed multiple national
certifications:
for example:
United States: ASME
EU: CE
Eastern Europe: EAC
Russia: GOST
Singapore: MOMO
etc
Buy products, buy with confidence, use with confidence
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
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!
If you are interested in our company or products, you can contact with us through online consulting, demand table submission, e-mails and telephones. Our staff shall wholeheartedly provide product information, application knowledge and good service for you.
Method of protecting steam boilers against caustic
HOT
Capacity:1-20t/h
Rated thermal efficiency: 100-104%
Fixed working pressure: ≤1.6MPa
Applicable fuel:natural gas etc.
HOT
Capacity:0.7-14MW
Rated thermal efficiency:96-98%
Fixed working pressure:≤1.25MPa
Applicable fuel:Natural gas, light oil, etc.
HOT
Capacity:0.7-2.8Mw
Rated thermal efficiency: 97.2-106%
Fixed working pressure:0.1MPa
Applicable fuel:Natural gas, etc.
HOT
Capacity:2.8-7.0Mw
Rated thermal efficiency:≥105.5%
Fixed working pressure:-0.02MPa
Applicable fuel:Natural gas, etc.
HOT
Capacity:99Kw
Rated thermal efficiency:97.2-104.4%
Fixed working pressure:1.0MPa
Applicable fuel:Natural gas, etc.
HOT
Capacity:0.5-4.0 t/h
Rated thermal efficiency:98%
Fixed working pressure:≤1.25MPa
Applicable fuel:electric energy
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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. 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 (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
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
Water Handbook - Preboiler & Industrial Boiler Corrosion Control | SUEZGet Price
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
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
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
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
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
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
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
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
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
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
Feel free to reach out if you want to collaborate with us, or simply have a chat.
