Fully Automatic 4t Natural Gas Fired Boiler Plant
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
Galvanic corrosion occurs when a metal or alloy is electrically coupled to a different metal alloy. The most common type of galvanic corrosion in a boiler system is caused by the contact of dissimilar metals, such as iron and copper. This differential cells can also be formed when deposits are present.Get Price
Galvanic corrosion. Caustic corrosion. Acidic corrosion. Hydrogen embrittlement. Oxygen attack. Carbon dioxide attack. Concentration of caustic (NaOH) can occur as a result of steam blanketing (which allow salts to concentrate on boiler metal surface) or by localized boiling beneath porous deposits on tube surface.Get Price
Hydrogen Attack or Embrittlement. Since around 1960, hydrogen attack, or embrittlement, has been encountered with increasing frequency in high-pressure, high-purity systems. It is not encountered in the average industrial plant because the problem usually occurs only in units operating at pressures of 1500 psig or higher.Get Price
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This boiler is a kind of fully automatic horizontal type fire tube oil gas fired hot water boiler with high thermal efficiency and it is safe and reliable. For a 2-pass boiler there is only one bank of tubes for a 3-pass boiler there are 2 tube passes and for a 4-pass boiler there are 3 . Learn MoreGet Price
Hydrogen embrittlement in boilers. Oxygen attack in boilers. Caustic corrosion in boilers. Silica Scaling in Boilers. Filtration. Lenntech Hakkında. Lenntech (European Head Office) Distributieweg 3 2645 EG Delfgauw Hollanda Phone: +31 152 610 900 fax: +31 152 616 289 e-mail: [email protected]Get Price
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Hydrogen embrittlement in boilers - Lenntech Recently membrane contractors have been utilized to remove the dissolved gasses (O2 and CO2) in boiler feedwater Water Treatment Solutions Home Turnkey plants Containerized …Get Price
Hydrogen embrittlement. Hydrogen embrittlement of mild steel boiler tubing occurs in high-pressure boilers (above 10 bars), when atomic hydrogen forms at the boiler tube surface as a result of corrosion. Hydrogen permeates the tube metal, where it can react with iron carbides to form methane gas, or with other hydrogen atoms to form hydrogen gas.Get Price
Hydrogen embrittlement is not normally observed in utility boilers, and there have been no reported evi- dence of failures attributed to embrittlement. Hydrogen damage is permanent damage caused by the reaction of hydrogen with the carbideGet Price
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Hydrogen embrittlement. Oxygen attack. Carbon dioxide attack. Without proper mechanical and chemical deaeration, oxygen in the feed water enters the boiler. Much is flashed off with the steam; the remainder can attack boiler metal. Oxygen in water produces pitting that is very severe because of its localized nature.Get Price
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BOILER START UP, CLEANING, LAY UP AND MAINTENANCE 387 Chapter 63. Boiler Startup (Pre-operational Cleaning) 389 Chapter 64. Descaling and Boiler Cleaning 391 Chapter 65. Boiler LayUp 400 Chapter 66. Boiler Maintenance 403 (viii) PART – VIII.Get Price
Corrosion is a relevant problem caused by water in boilers. Corrosion can be of widely varying origin and nature due to the action of dissolved oxygen, to corrosion currents set up as a result of heterogeneities on metal surfaces, or to the iron being directly attacked by the water.Get Price
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Corrosion is a relevant problem caused by water in boilers. Corrosion can be of widely varying origin and nature due to the action of dissolved oxygen, to corrosion currents set up as a result of heterogeneities on metal surfaces, or to the iron being directly attacked by the water.Get Price
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Feb 14, 2020 · Caustic embrittlement is a phenomenon that occurs in boilers where caustic substances accumulate in boiler materials. It also can be described as the cracking of riveted mild steel boiler plates. This occurs at temperatures of 200°-250°C as a result of local deposition of concentrated hydroxide. Caustic embrittlement focuses on the stressed Get Price
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Hydrogen embrittlement in boilers - LenntechGet Price
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Hydrogen embrittlement. Hydrogen embrittlement of mild steel boiler tubing occurs in high-pressure boilers (above 10 bars), when atomic hydrogen forms at the boiler tube surface as a result of corrosion. Hydrogen permeates the tube metal, where it can react with iron carbides to form methane gas, or with other hydrogen atoms to form hydrogen gas.Get Price
Hydrogen embrittlement. Oxygen attack. In boiler systems, corrosion resulting from carbon dioxide is most often encountered in the condensate system. Because feed water deaeration normally removes carbon dioxide from the boiler feed water, the presence of the gas in condensate is typically due to carbonate and bicarbonate decomposition Get Price
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