All products of Wuxi ZOZEN Boiler Co., Ltd. are 100% factory inspected to ensure high quality. We have manufactured 6 series of 400 types of boilers, including steam boilers, hot water boilers, power station boilers, fire tube boilers, water tube boilers, CFB boilers, chain grate boilers, biomass fuel boilers, gas and oil boilers and waste heat Recovery boilers, products are widely used in manufacturing (chemical, coking, paper, food processing, etc.), thermal power plants, building materials and other industries.

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gas/oil fired boiler

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firetube vs watertube boilers: a comparis

Firetube vs Watertube Boilers: a Comparis

Feb 19, 2015· Two primary boiler types, the firetube boiler and the watertube boiler, are essentially opposite in design. The firetube boiler passes combustion gas inside a series of tubes surrounded by water in a vessel to produce steam, while a watertube instead sends water through a series of tubes surrounded by combustion gas used to transfer heat energy ...

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water-tube or fire-tube condensing ... - hot water boile

Water-tube or fire-tube condensing ... - Hot Water Boile

The water-tube boiler may just result in a tube leak, which can be easily contained. Conclusion. Water-tube and fire-tube boilers are complete opposites in terms of the location of the water relative to the hot gases resulting in water-tubes boilers being inherently more efficient in terms of the heat transfer.

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chapter 14 boilers - pearson educati

Chapter 14 Boilers - Pearson Educati

Superheater—tubes located near the boiler outlet that increase (superheat) the temperature of the steam, p. 297. Waste heat boiler—a device that uses waste heat from a process to produce steam, p. 297. Water tube boiler—a type of boiler that contains water-filled tubes that allow water to circulate through a heated firebox, p. 296.

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the dirty truth about heat exchanger fouling — heatca

The Dirty Truth About Heat Exchanger Fouling — HeatCa

Apr 14, 2016· Smooth tube over finned tube - Many heat exchangers will use fins to increase the heat exchanger area. While this may help the heat transfer, the small gaps between fins are magnets for fouling. Depending on the specific design and orientation, these fins may be difficult or impossible to clean even with a manual process.

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water handbook - preboiler & industrial boiler corrosion .

Water Handbook - Preboiler & Industrial Boiler Corrosion .

Elevated temperatures at the boiler tube wall or deposits can result in some precipitation of phosphate. This effect, termed "phosphate hideout," usually occurs when loads increase. When the load is reduced, phosphate reappears. Clean boiler water surfaces reduce potential concentration sites for caustic.

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surface condenser - wikiped

Surface condenser - Wikiped

A surface condenser is a commonly used term for a water-cooled shell and tube heat exchanger installed to condense exhaust steam from a steam turbine in thermal power stations. These condensers are heat exchangers which convert steam from its gaseous to its liquid state at a pressure below atmospheric pressure.Where cooling water is in short supply, an air-cooled condenser is often used.

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engineer's guide to boiler tube inspections | engineering3

Engineer's Guide to Boiler Tube Inspections | Engineering3

When water chemistry is suspected of influencing failures or boiler chemical cleaning may be required, furnace tube samples should be extracted for deposit analysis. Similarly, when a newly replaced component starts popping tubes, the cost associated with removing and sending samples for metallurgical analysis can be more easily justified.

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how boiler pipe is manufactured, material specification .

How Boiler Pipe is Manufactured, Material Specification .

Boiler steel pipes includes medium pressure boiler pipe and high pressure boiler pipe, it is often manufactured in seamless procedures, welded steel pipe is not applicable. It has been widely used at heat exchanger pipe and tubing services, tube exchanger bundle, high pressure boiler, economizer, super heater, petrochemical industry pipes, etc.

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steam boiler inspections using remote field testing .

Steam Boiler Inspections Using Remote Field Testing .

Mar 01, 2011· On the water/steam side, there is a high potential for oxidization of boiler tubes due to high temperature steam and the corrosive action of chemicals in the water supply.

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heat exchanger fouling factors - rl deppma

Heat Exchanger Fouling Factors - RL Deppma

Apr 18, 2016· In closed hydronic heating systems, dirt and poor water quality can affect many products other than the heat exchanger. For this reason, we go to great lengths to make sure those systems are clean. Clean systems promote less fouling in shell and tube heat exchangers. The U value is also greatly affected by the fluid type and temperature.

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typical causes of slagging and fouling problems in boile

Typical Causes of Slagging and Fouling Problems in Boile

Jun 01, 2015· Boiler slagging and fouling are some of the major operations and maintenance factors that can negatively affect power plant reliability and efficiency. News …

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1.3 fuel oil combusti

1.3 Fuel Oil Combusti

Water in the heat exchanger tubes is heated as it moves upward through the tubes. Cast iron boilers produce low pressure steam or hot water, and generally burn oil or natural gas. They are used primarily in the residential and commercial sectors. Another type of heat transfer configuration used on smaller boilers is the tubeless design. This ...

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choosing the right boiler: watertube vs. firetube - boiler .

Choosing The Right Boiler: Watertube vs. Firetube - Boiler .

Jun 13, 2013· Boilers come in all different types, sizes, and shapes and are classified by configuration of the furnace, or firesides, and the watertubes, or water holding volume. The two main boiler types consist of firetube and watertube boilers, and deciding which of the two will best fit your process needs is not as easy as it may seem. It is like comparing ...

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heat exchanger fouli

heat exchanger fouli

Scaling/Crystallization Fouling: Scaling is the most common type of fouling and is commonly associated with inverse solubility salts such as calcium carbonate (CaCO 3) found in water.Reverse solubility salts become less solute as the temperature increases and thus deposit on the heat exchanger surface.

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fouling - wikiped

Fouling - Wikiped

Scaling or precipitation fouling involves crystallization of solid salts, oxides, and hydroxides from solutions.These are most often water solutions, but non-aqueous precipitation fouling is also known. Precipitation fouling is a very common problem in boilers and heat exchangers operating with hard water and often results in limescale.. Through changes in temperature, or solvent evaporation ...

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key condenser failure mechanisms | power engineeri

Key Condenser Failure Mechanisms | Power Engineeri

Apr 01, 2009· The following case history illustrates how rapidly contaminant in-leakage can affect boiler water chemistry. Lesson No. 2 This problem involved a 200 MW unit with a 2,400 psig, coal-fired ...

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an overview of problems and solutions for components .

An overview of problems and solutions for components .

Dec 21, 2017· In engineering applications, there are various types of boilers such as water tube boilers, fire tube boilers, packaged boiler, fluidized bed combustion boiler, pulverized fuel boiler and waste heat boilers. These boilers are used in different industries such as power plants, paper, and chemical. The present paper reports various problems (such as agglomeration, slagging, fouling, …

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water handbook - boiler system failures | su

Water Handbook - Boiler System Failures | SU

Examination of the affected tubes usually reveals a prominent water line with general thinning in the top area of the tube or crown. In rare instances, the bottom of the tube is thinned. When the boiler water contains caustic, high concentrations accumulate and lead to caustic corrosion and gouging under the deposits that accumulate at the ...

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boilers chicken for sale in srilan

Boilers Chicken For Sale In Srilan

boiler tube affected by water fouling pic. 2019-10-2 · Hazardous-waste and medical-waste incinerators usually have just convective boiler sections, typically of fire-tube rather than water-tube design. Most hazardous-waste and medical-waste incinerators, particularly the smaller units, do not have heat-recovery boilers. Get a Quote

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boiler retubing & boiler tube replaceme

Boiler retubing & boiler tube replaceme

Extend the life of your boiler: Tubes are the heart of any boiler unit. Improper deaeration and water treatment can significantly affect the lifespan of tubes. Additionally, tube replacement can often indicate water quality issues that need to be addressed. Retubing can increase the life of the unit by many years.

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what is a boiler feed water treatment system and how does .

What Is a Boiler Feed Water Treatment System and How Does .

Sep 26, 2016· For industrial companies using a boiler for its facility, some type of boiler feed water treatment system is usually necessary to ensure an efficient process and quality steam generation. 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 ...

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