what is fouling in boiler

Boiler feedwater - Wikipedia

Boiler feedwater is an essential part of boiler operations. The feed water is put into the steam drum from a feed pump. In the steam drum the feed water is then turned into steam from the heat. After the steam is used it is then dumped to the main condenser.

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What is boiler fouiling? - Quora

Dec 06, 2018· Boiler fouling is basically deposits of salts and other foreign material inside the boiler tube. Fouling is depends on the percentage of salts and impurities present in the boiler feed water. Disadvantages of fouling is the loss of efficiency in boiler as fouling works as insulation so it creates problem in heat transfer.

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What Is a Boiler Feed Water Treatment System and How

Sep 26, 2016· The most appropriate boiler feed water treatment system will help the facility avoid costly plant downtime, expensive maintenance fees, and boiler failure as a result of scaling, corrosion, and fouling of the boiler and downstream equipment. But what is a boiler feed water treatment system and how does it work?

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Silica Scaling in Boilers - Lenntech

After silica enters the boiler water, the usual corrective action is to increase boiler blowdown and then to correct the condition that caused the silica contamination. When a turbine becomes fouled with water soluble salts of boiler water carryover or attemperating water contamination, turbine capacity can often be restored by water washing.

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Chapter 18 - Steam Turbine Deposition, Erosion, and

Vaporization of Boiler Water Salts. Another source of turbine deposition is the vaporization of salts present in boiler water. With the exception of silica, vaporization of boiler water salts is usually not significant at pressures below 2400 psig. Silica can vaporize into the steam at

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What is Fouling? - Definition from Corrosionpedia

Marine fouling is a typical composite fouling and occurs due to seaweed, bacteria and other living organisms in the waters, which adhere to immersed surfaces such as ship hulls. The organisms settle on the surface and grow quickly, forming a layer that covers the

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Mechanisms of Slagging and Fouling - boilercleaning.org

Fouling is generally caused by the vaporization of volatile inorganic elements in the coal during combustion. When heat is aborbed and temperatures decrease in the convection area of the boiler, compounds formed by these elements condense on ash particles and heating surface, forming a glue which initiate deposition.

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What Is a Boiler Feed Water Treatment System and How

Sep 26, 2016· The most appropriate boiler feed water treatment system will help the facility avoid costly plant downtime, expensive maintenance fees, and boiler failure as a result of scaling, corrosion, and fouling of the boiler and downstream equipment.

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What is the difference between slagging and fouling in a

Aug 30, 2018· Slagging is the formation of molten or partially fused deposits on furnace walls of boiler or convection surfaces exposed to radiant heat. Fouling is defined as the formation of deposit on convection heat surfaces such as superheater and reheaters. What is Slagging and Fouling in Boilers?

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What is the difference between slagging and fouling in a

Aug 30, 2018· Slagging is the formation of molten or partially fused deposits on furnace walls of boiler or convection surfaces exposed to radiant heat. Fouling is defined as the formation of deposit on convection heat surfaces such as superheater and reheaters. What is Slagging and Fouling in Boilers?

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Typical Causes of Slagging and Fouling Problems in Boilers

Boiler slagging and fouling, and the resulting frequent operation of sootblowers, are some of the major operations and maintenance factors that can negatively affect power plant reliability and efficiency. Boiler slagging and fouling are among the most common causes of maintenance headaches at coal-fired power plants.

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The Dirty Truth About Heat Exchanger Fouling HeatCalc

Apr 14, 2016· Heat exchanger fouling occurs on many applications ranging from cement kilns to smelter exhaust, to boilers. For this article, I will focus on two types of fuels in power generation applications. 1. Gaseous Fuels. Natural Gas, Propane, and Biogas are all low carbon content fuels that have a low propensity for fouling.

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The Dirty Truth About Heat Exchanger Fouling HeatCalc

Apr 14, 2016· In short, fouling is the buildup of stuff on your heat exchanger surfaces that reduces the effectiveness of heat transfer. This buildup acts as an insulator and reduces the amount of heat transfer that can take place. The most common

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Heat Transfer Typical Fouling Factors Values

Fouling Factors. Fouling is a function of the system and the equipment used. Parameters which influence the fouling rate in a system include: the type of fluid, the type of heat exchanger, the temperatures, the velocities and the materials of construction. The actual fouling rate is

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What is Fouling? - Definition from Corrosionpedia

Fouling is the settlement, and sometimes the growth, of undesired materials on solid surfaces in a way that reduces the efficiency of the affected part. Fouling may be caused by either the operating environment or by one of the equipments processes.

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Fouling - Wikipedia

Fouling Wikipedia, the free encyclopedia Fouling is the accumulation of unwanted material on solid surfaces to the detriment of function. The fouling materials can consist of either living organisms or a non Deaeration of Boiler Feedwater CNG refueling Information Deaeration of Boiler Feedwater.

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Heat Exchangers > Typical Fouling Factors - Engineering Page

Fouling Factors for a variety of typical thermal applications.

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Typical Causes of Slagging and Fouling Problems in Boilers

Boiler slagging and fouling are among the most common causes of maintenance headaches at coal-fired power plants. Though you cannot totally eliminate the problem, following proper operation and

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The Dirty Truth About Heat Exchanger Fouling HeatCalc

Apr 14, 2016· Heat exchanger fouling occurs on many applications ranging from cement kilns to smelter exhaust, to boilers. For this article, I will focus on two types of fuels in power generation applications. 1. Gaseous Fuels. Natural Gas, Propane, and Biogas are all low carbon content fuels that have a low propensity for fouling.

Learn More

Typical Causes of Slagging and Fouling Problems in Boilers

Boiler slagging and fouling are among the most common causes of maintenance headaches at coal-fired power plants. Though you cannot totally eliminate the problem, following proper operation and

Learn More