The boiler parameters are 15 TPH, 44 kg/cm2g and 450oC. It is a coal fired AFBC boiler with two compartments. It has to meet the electrical load of the pulp & paper plant and the steam demand of the paper machine. Initially the plant was required to operate with single compartment for some period. Once the plant
boiler and this paper also gives the description of calculation of efficiency for FBC boiler. Here calculation has been done for the 100TPH FBC boiler used in the Prakash Industries AFBC type using Indian lignite coal having a different chemical composition and properties.
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Presence of SO2 & NOx in flue Gas. • Emissions from a Power Plant Predominantly consist of CO2 , & in small quantities - CO , Sulphur-Di-Oxide ( SO2 ), Oxides of Nitrogen(Nox) , Particulate matter etc. • Quantity of SO2 in the Exit Flue gas depends on the Sulphur Content in the Coal and Quantum of Coal Fired in the Power Plant.
Hence this is an improved version of AFBC. The CFBC boiler has more advantages than AFBC boiler. a. High efficiency. Due to the intense mass and heat exchange in the fluidized bed, unburned coal particles can increase the residence time in the furnace by multiple cycles, which is very beneficial to the fuel burnout. b. Fuel flexibility.
Steam Enthalpy Cal Recent Boiler Energy Audit Conducted date, please enclose the report Average Steam Cost / MT Chargewave Energykem – Coal fired FBC / AFBC Boiler Operation Data Inquiry Sheet Coal feeders feed Kg / RPM if caliberated SA HP if Seperate Motor Design Furnace Draft mmWC Design Heating Surface Area M2 (APH + Economiser)
Jun 21, 2012 · Performance of a BoilerHeat BalanceBalancing total energy entering a boiler againstthe energy that leaves the boiler in different forms % Heat loss due to dry flue gas % Heat loss due to steam in fuel gas %100.0 % Heat loss due to moisture in fuel BOILER % Fuel Heat loss due to moisture in air 2% Heat loss due to unburnts in residue % Heat loss due to radiation & other unaccounted loss % Heat in Steam
This case study is about various operation & maintenance aspects of an AFBC boiler, that led to serious availability issue & efficiency issue. The visit was called for by the management to study the reasons for the following problems faced in the boiler. 1. High fuel consumption in recent times. 2. Severe plugging of air preheater tubes was experienced.
Dec 12, 2012 · How do you calculate coal consumption in afbc boiler comparative with afbc cfbc having higher efficiency up to 98.5 % then afbc boiler,cfbc boiler power consumption is more comparative to afbc
The boiler combustion efficiency increases to 83.1% (E2). The percentage of oxygen in the flue gas can be measured by inexpensive gas-absorbing test kits. More expensive (ranging in cost from $500 to $1,000) hand-held, computer-based analyzers display percent oxygen, stack gas temperature, and boiler efficiency.
a) PFBC boiler b) AFBC boilers c) Pulverized coal fired boilers d) Stoker fired boilers 9. When the boiler bed temperature exceeds beyond 950°C, the result is: a) Low steam temperature b) clinker formation c) Melting of lime stones d) Ash carry over 10. For even distribution of fluidized air in AFBC boilers, which one of the following is used?
compared to AFBC boiler. If CFBC is used instead of AFBC boiler than 250 kg of coal can be saved per hour. References  Patel, C.T., “calculating the efficiency of boiler for different GCV of the coal”, International Journal of Innovative Research in Science, Vol-2 ISSN: 2319-8753 (May 2013).
afbc boiler coal consumption UltraTech Cement Limited – CIIGBC Sewagram Cement Works Package Make Type Capacity &Feature Boiler-1 TKIL CFBC 170TPH, Pr.-87 Kg/cm2, Temp.-515 +/-50C Boiler-2 IJT AFBC
TO STUDY AND INVESTIGATION ON AFBC BOILER - IJSRE. 2017-4-14·TO STUDY AND INVESTIGATION ON AFBC BOILER. Poulik Kathiria. 1, Patel Drumil. 2, Gujjar Kaushik. 3 Average fuel consumption rate 2085 kg/hr 2045 kg/hr Conclusion derived from the data related to the boiler, if higher GCV coal is used, then the. Get a Quote
It is a well known fact that the initial cost of boiler is a small part of total costs associated with the boiler over its lifetime. In the operational life of a boiler, major costs arise out of the fuel costs.
3.How about the quality of coal per hour required for 80 tph boiler afbc ? Our industrial steam boiler manufactured strictly according to national and international standard. our products have approved ASME, IBR, ISO9001-2008, etc. coal per hour required for 80 tph boiler afbc Customer visiting
Reckoned as one of the involved companies of the industry, we are extremely immersed in providing AFBC Boiler. Other Details: Fuel Used: Oil, Gas and Solid Fuels like Indian and imported coal, Kutch lignite, Bagasse, Rice Husk, Groundnut Shell, Spent Wash, Coconut Shells, Palm Oil Bunches, Cotton Stalk and other Agro & Biomass Fuels, & Bio-Coal Briquettes with different firing combinations.
Sep 02, 2017 · AFBC ( Atmospheric Fluidized Bed Combustion ) BOILER COLD START UP PROCEDURE:- AFBC boiler is a very developing technology now these days this technology is widely used in the industrial boiler for the purpose of efficient and clean burning of coal and other fuel for steam generation. afbc boiler is suitable for combustion of low quality fuel .
2. Boilers Bureau of Energy Efficiency 31 The coal-feed hopper runs along the entire coal-feed end of the furnace. Acoal grate is used to control the rate at which coal is fed into the furnace, and to control the thickness of the coal bed and speed of the grate. Coal must be uniform in size, as large lumps will not burn out com-
Ultra-Supercritical Circulating Fluidized Bed (CFB) Boilers. Uniformly distributed fuel and air due to intense mixing inside the bed of solids in the furnace Isothermal conditions in the circulating solid loop due to the positive impact of highly efficient cyclones In addition, low SO2 emissions with 95 to 98% sulfur removal.
• Every 1% increase in moisture decreases the Boiler Efficiency by 0.1-0.2% • Hydrogen in Coal • Every 1% increase in hydrogen content decreases the boiler efficiency by 1.5-2% • Sensible heat due to ash • Every 1% increase in ash content decreases the boiler efficiency by 0.02% approx.
Every boiler has different design and rating, however I have seen 200 Mw, 500 Mw and 600 Mw boilers of double pass, tilt tangential design type. 600 Mw boiler can generate 1850 TPH of steam per hour at 423 TPH coal. However this data is based entirely on coal’s calorific value.
To illustrate the magnitude of this effect, a sensitivity analysis was performed for an 800-MW (gross) power plant with a turbine cycle heat rate of 8,000 Btu/kWh and boiler efficiency of 85%. The baseline auxiliary power use was 80 MW, and baseline net unit heat rate was 10,458 Btu/kWh.
AFBC Boiler Working Principle: Technological collaboration with Power Systems for boilers up to 300 TPH. There are more than AFBC boilers operating worldwide which were designed as per Power System design and supplied either directly produced by their licensees. AFBC Boiler Salient Features: Low fluidizing velocity for lower wear of bed tubes.
With coal, there is risk of clinker formation in the bed if the temperature exceeds 950oC and loss of combustion efficiency if the temperature falls below 800oC. For efficient sulphur retention, the temperature should be in the range of 800oC to 850oC. General Arrangements of AFBC Boiler AFBC boilers comprise of following systems:
With the AFBC, the combustion air pressure is typically 25 cm of water pressure at the FD fan,16 cm at the base of the active bed, and _____ at the top of the combustion mass. a) at boiler pressure b) at flue gas exit temperature c) negative pressure d) atmospheric pressure e) absolute pressure
Aug 02, 2018 · 30tph AFBC Coal fire boiler – Professional CFB Boiler Supplier 30tph AFBC Coal fire boiler – CFBC Boiler Manufacturer ZBG Boiler is a circulating fluidized bed boiler manufacturer in China, CFB boiler is a good choice for CFB – F&H Crone High Efficiency FBC boilers can burn fuel with a combustion efficiency of over 95% The boilers
steam generation using a coal-fired boiler. This paper deals with the determination of efficiency of boiler and calculates the heat losses in Suryalakshmi thermal power plant, Nagardhan of 25 MW unit and try to give some suggestions to reduce heat losses. Power Plant play very important role
Circulating Fluidised Bed Combustion (CFBC) Boilers. A modern concept in steam generators, these boilers are designed and manufactured for a wide range up to about 550 TPH capacity. These boilers display multi-fuel firing capabilities, high efficiency, low emissions of SOx & NOx and can effectively utilise a variety of
The proposed Case-Study is to identify the scope of energy conservation and cost saving through optimization of bed material in a CFBC Boiler during plant start up.
Army central heat plants. Although AFBC boilers are economically competitive with conventional coal fired boilers and offer greater fuel flexibility. AFBC boilers firing coal are not competitive with oil or gas in the current energy market. 14 SUBJECT TERMS 15 NUMBER OF PAGES atmospheric fluidized bed combustion 102
concept in steam generators, these boilers are designed and manufactured for a wide range up to about 550 TPH capacity. These boilers display multi-fuel firing capabilities, high efficiency, low emissions of SOx & NOx and can effectively utilise a variety of Coals, Lignites, Petcoke, Char, Coal Washery Rejects etc. Steam Generators with Circulating
Total project cost of such plant including cost of coal washery and AFBC for using washery rejects at ash content at 42%, 34%, 24% is likely to be cheaper by 5%, 8% and 10% respectively. Generation of 15 to 18 MWe by AFBC is an extra benefit.
Jan 27, 2018 · AFBC is atmospheric fluidised bed combustion, where the furnace pressure is atmospheric pressure. The flue gas from the furnace goes through a cyclone and is let out to the atmosphere. In case of CFBC, Circulating fluidised bed combustion, the furnace is pressurised and the furnace gas is recirculated
And atmospheric fluidized bed combustion (AFBC) boilers offer efficient, cost effective and reliable steam generation for industrial and power plant usages. AFBC technology promises to provide a viable alternative to conventional coal-fired and other solid fuel fired boilers. AFBC Boiler Salient Features. 1.
Jan 15, 2019 · A pulverized coal-fired boiler is an industrial boiler that generates thermal energy by burning pulverized coal. How does a steam boiler work? In pulverized coal fired boiler,The coal is pulverized to a fine powder, so that less than 2 % is +300 micro meter and 70 – 75 % is below 75 microns.
Jan 15, 2019 · Pulverized coal-fired Boiler or Pulverized fuel Boiler. A pulverized coal-fired boiler is an industrial boiler that generates thermal energy by burning pulverized coal. How does a steam boiler work? In pulverized coal fired boiler,The coal is pulverized to a fine powder, so that less than 2 % is +300 micro meter and 70 – 75 % is below 75 microns.
design and operating characteristics of Thermax AFBC boilers offer a number of advantages for industrial steam and power generation. Combustion temperatures of the AFBC process are maintained below the fuel ash softening temperature, so low-grade fuels can be burned without the risk of slagging and fouling in the boiler. The lower temperatures also
34. With the AFBC, the combustion air pressure is typically 25 cm of water pressure at the FD fan, 16 cm at the base of the active bed and _____ at the top of the combustion mass: a. Boiler pressure b. Flue gas exit temperature c. Negative pressure d. Atmospheric pressure e. Absolute pressure.
Ultra-Supercritical Circulating Fluidized Bed (CFB) Boilers. 660 MWe for lignite B, higher for hard coal, for low-grade and difficult-to-burn fuels such as anthracite, lignite, petroleum coke, oil shale, discarded coal and biomass, GE offer circulating fluidized bed technologies with different arrangements suited to fuel .