bed coil afbc boiler leakage reason


Why does it mean to provide compartment in AFBC boiler

Apr 29 2018· Furnace purging refers to the clearing of the entire flue gas path for any combustibles that are leftover in the furnace This clearing function is accomplished by ambient air This is a mandatory safety requirement before ignition of fuel and is

Industrial Boilers in Tiruchirappalli Tamil Nadu

AFBC BED COIL CONDITION We already replaced the AUVERY IRON STEEL INDIA LTD 21 • Failure bed coil image • Condition of bed coils After plugging the bed coils again coil leakage in same plugged coil because of more temperature so we applied the refractory in the above always opened the boiler startup vent In that more

INTRODUCTION TO BOILER - 123seminarsonly com

Dec 16 2010· SHORTAGE OF STEAM GENERATION CAPACITY STEAM TEMPERATURE CFBC boilers do not have bed coils as in AFBC The steam is generated across the entire furnace boiler water Another reason can be

Bed Coil Bed Coils Tpp Boilers Pvt Ltd

Circulating Fluidized Bed CFB combustion boilers gives the flexibility for combustion of a wide range of coals and alternative fuel sources All this without compromising efficiency and with reduced emissions This article gives a brief description of the working of a CFB boiler At the bottom of the boiler furnace there is a bed of inert material

Boiler Operation - SlideShare

AFBC is a misnomer A stands for Atomspheric means close to our Atomspheric pressure and can vary from 800mmWC to 2500mmWC or which is not pressurized FBC is fluidised bed combustion Technically Compartment is provided in bubbling bed or stationar

FURNACE EXPLOSION IN CFBC BOILERS - Blogger

Dec 30 2009· FURNACE EXPLOSION IN CFBC BOILERS EXPLANATION PREVENTION AND PROTECTION We undertake all types of consultancy works for Boiler troubleshooting We conduct study of your boiler AFBC CFBC operations maintenance to help you avoid such misshapen in future o Never attempt to fluidize the bed when tube leakage has caused bed

A Review Paper on Erosion and Corrosion Behavior of Coal

Apr 29 2018· Furnace purging refers to the clearing of the entire flue gas path for any combustibles that are leftover in the furnace This clearing function is accomplished by ambient air This is a mandatory safety requirement before ignition of fuel and is

Failure Analysis of Bed Coil Tube in an Atmospheric

Business listings of Industrial Boilers manufacturers suppliers and exporters in Tiruchirappalli Tamil Nadu along with their contact details address Find here Industrial Boilers suppliers manufacturers wholesalers traders with Industrial Boilers prices for buying

How Circulating Fluidized Bed Boilers Work

INTRODUCTION TO BOILER Atmospheric Fluidized Bed Combustion AFBC Boiler Most operational boiler of this type is of the Atmospheric Fluidized Bed Combustion AFBC consists of a double coil three pass construction and fitted with modulated pressure jet system The Thermic fluid which acts as a heat carrier is heated

Presentation Name on emaze

Dec 11 2015· Safe Operation and Explosions in Boilers PARAMETERS REQUIRED TO BE MAINTAINED STRICTLY FOR EFFICIENT OPERATION OF AFBC BOILERS Bed Height FD Air Pressure Primary Air Pressure Bed Temp Furnace Temperature Fuel Size Bed Material size Specifications Air Fuel ratio higher the size of coal higher the erosion of bed coils and blockage

What is the reason for furnace purging in a CFB boiler

Sep 14 2016· • Expand bed height for AFBC boiler is to be maintained 500 to 600 mmwc • FD air discharge pressure is to be maintained 600 to 650mmwc • Wind box or air box pressure is to be maintained 500 to 600mmwc High W B pressure increases the erosion of bed coils …

Safe Operation and Explosions in Boilers - SlideShare

An air preheater APH is any device designed to heat air before another process for example combustion in a boiler with the primary objective of increasing the thermal efficiency of the process They may be used alone or to replace a recuperative heat system or to replace a steam coil

Why is the bed material required in the AFBC and CFBC boilers

Nov 13 2013· The Atmospheric Fluidized Bed Combustion Boilers have advantages as compared to conventional coal fired boilers in respect of heat transfer SOx NOx emissions and efficiency In the present study the failure analysis of bed coil tube used in atmospheric fluidized bed …

Boiler trouble shooting guide- K K Parthiban -

Mar 10 2018· These boilers work on fluidization principle To ensure particle donor stick to each other you have control the operating temperature of bed below ash melting and optimum for sulphur capture and so on This operating temperature is achieved by the b

What is the reason for furnace purging in a CFB boiler

Oct 12 2013· The major reason is caustic gouging in bed tubes of these high pressure AFBC Boilers Corroision in the boiler is prevented by maintaining the boiler water condition in such a way that the magnetic layer is maintained Boiler water has to be at Ph 9 …

Air preheater - Wikipedia

Compared to pulverized coal fired boilers the AFBC boilers are more susceptible to erosion along the fireside path The erosion is caused by the direct impingement of in-bed particles on the tube surfaces Super heater coils of an AFBC boiler are found to be affected extensively by solid particle erosion

AFBC Boiler - Bed Coils Frequent Failure - CR4 Discussion

Erection Commissioning of 40 TPH AFBC boiler when Bed coil of boiler changed in TATA Chemicals Ltd Air leak test of boiler to ID outlet gate flue gas path FD fan and PA fan ducting

Ishvar Rathod - Manager Power Project - Filatex india

bed coil are used to increase the Surface Areas to achieve higher Heat Transfer Rates They are used in Fluidized Bed coils and Fluidized bed superheaters Studded Bed Colis Tubes Home water wall panels economizer boiler bed coils waste heat Boilers pipes tubes twitter rss - economiser superheater boiler bank water wall panels