Cfbc boiler details pdf

This article gives a brief description of the working of a cfb boiler. Generally, cfbc consists of a boiler and a hightemperature cyclone. 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. Recently, however, cfbc boilers using rdf and woodbased biomass as the fuel have drawn attention. Benefits include high combustion efficiency, high reliability and availability, low maintenance cost, reduced erosion, enormous fuel flexibility and low emission. Sep 02, 2017 afbc atmospheric fluidized bed combustion boiler cold start up procedure. Afbc boiler means atmospheric fluidise bed combustion. The coal particle size used for cfbc boiler is in the range of. Cfbc boiler manufacturer, tu500 boiler john thompson faq about tu500 boiler john thompson 1. Ijreat international journal of research in engineering. Take advantage of the most economical way to improve efficiency and operating flexibility, get. Introduction to furnace explosions in cfbc boilers many cfbc boilers have sufferedreported furnace explosion in the past, apart from causing severe losses to the business concerned, the occurrences have shaken the confidence of cpp professionals, however pf boilers are more prone to the such type explosions than cfbc boiler but the operation. This section is all about afbc and cfbc boilers circulating fluidised bed combustion operation manuals. Isgec cfbc boiler has high residence time, fly ash recirulation, high turbulence and electrostatic precipitator type pollution control.

Heat credits include sulphation credit and forced draft fan credit. If it is not possible to accomplish this, the hydro test may be conducted twice, once for drainable portion and another full hydro cfb including nondrainable portion. The circulating fluidized bed combustion cfbc boiler is the most advanced steam generatortechnology. Isgec manufactures btg package, cfbc boiler, travelling grate boiler, dumping grate boiler, bagasse fired boiler. This boiler is a new generation of low speed circulating fluidized bed boiler based on domestic and international advanced technology and experience. Boiler systems are major inancial investments, yet the methods for protecting these invest. Pdf optimization of bed material consumption in a cfbc boiler. Hot air is necessary for rapid combustion in the furnace and also for drying coal in milling plants. Circulating fluidized bed boiler is consisting of combustion chamber, separator, fly ash circulating system, superheater, convection bank, economizer, and air preheater. Apr 03, 2020 cfbc boiler details pdf presented at national boiler workshop introduction to cfbc boilers by satyanarayana senapathi, vp anjani steels.

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. Circulating fluidised bed combustion boiler cfbc capacities. Zg boiler is a circulating fluidized bed boiler manufacturer in china. Atmospheric fluidised bed combustion boiler afbc enmas gb. The cfbc gained popularity mainly as a coalfired boiler. Triad highly recommends that boiler feed water be treated before it enters the boiler. Supply and application of final painting of cfbc boiler, for unit 1 of 2 x 250 mw cfbc boiler at neyveli thermal power station ii expansion, neyveli, cuddalore dist. This includes lowgrade and difficulttoburn fuels such as anthracite, lignite, petroleum coke, oil shale, discarded coal, and biomass within a wide range of mixing rates. Cfbc boiler stands for circulating fluidized bed combustion boiler, the furnace is pressurised and the furnace gas is recirculated to capture the unburnt carbon, to increase the thermal efficiency of the boiler. Atmospheric fluidised bed combustion boiler afbc capacities. Cfbccirculating fluidized bed combustion boilery cube makes an effort for customer satisfaction and efficiency of product innovation. Difference between afbc and cfbc boilers 20170627 17. Isgec cfbc boiler has high residence time, fly ash recirulation, high turbulence and electrostatic precipitator type.

Superheated steam from the boiler used for production of paper as well as for power generation the boiler is a new kind mixed fuel boiler with high efficiency and low pollution which adopts circulating fluidized bed combustion technology with. Further six 6 nos afbc boilers are under various stages of erection and commissioning. This may not be true in case of a cfbc boiler where coal on bed may continue to smolder. In fluidized bed combustion boiler technology when air or gas is passed through an inert bed of solid particles such as sand supported on a fine mesh or grid, the air initially will seek a path of least resistance and pass upward through the sand. Valmet cfb boiler utilizes circulating fluidized bed.

The intrafurnace gas velocity is as high as 4 to 8 ms. Basic and partial detail design for 2x270 mwel cfbc boilers, becl ps. Valmet cfb boiler formerly cymic is an advanced circulating fluidized bed cfb boiler developed by valmet. Established in 1945 with a focus on safe, quality production, zg is the cfb boiler manufacturer of choice for power plants. Circulating fluidised bed combustion boiler cfbc enmas.

Performance guarantee test assessment of cfbc boiler. Circulating fluidizedbed combustion technology cfbc. All this without compromising efficiency and with reduced emissions. Among many distinguishable advantages of cfbc boilers, itachievesvery low nox and sox emission by capturing sulfur contents of the fuel during the burning process. For large units, the taller furnace characteristics of cfbc boiler offers better space. Why choose zg as tu500 boiler john thompson manufacturer. Tech in thermal power engineering, poojya doddappa appa college of engineering gulbarga, yadgir, karnataka 585202, india. Afbc atmospheric bubbling fluidized bed combustion cfbc circulating fluidized bed combustion long answer. Isgec cfbc boilers circulating fluidised bed combustion. Cfbc boiler manufacturer, 8 mw gas boiler faq about 8 mw gas boiler 1. Fbc fluidized bed combustion is a combustion technology used to burn solid fuels in steam boilers. Cfbc boilers are mostly claimed to be more cost effective than afbc boilers for industrial uses requiring more than 80110 thr of steam. Internal recirculation circulating fluidised bed combustion ir cfbc the boiler with its simplified, costeffective and efficient design provides improved performance. We have over 70 years experience of industrial steam boiler and autoclave,and we have a professional installation and aftersales staff for products.

Sitong low pressure circulating fluidized bed boiler is a high efficiency. Dec 05, 2019 cfbc boiler details pdf presented at national boiler workshop introduction to cfbc boilers by satyanarayana senapathi, vp anjani steels. Jun 18, 2019 cfbc boiler erection method statement. Operating experience of low grade fuels in circulating fluidised bed. The main china cfbc boiler alibaba china cfbc boiler, china cfbc boiler suppliers and manufacturers directory source a. Cfbc boiler means circulating fluidise bed combustion. The water in the boiler should have a ph level of between 7. Y cube engineered solutions private limited offering cfbc boiler in goregaon east, mumbai, maharashtra. Cfbc boilers1 free download as powerpoint presentation. Energy performance assessment of boilers bureau of energy efficiency 1 1.

It combines highefficiency combustion of various solid fuels with low emissions, even when burning fuels with completely different calorific values at the same time. This characteristic allows the oxycfb boiler to be made smaller and less expensive in a new unit application. Cfbc boiler details pdf admin may 27, 2019 leave a comment. Afbc atmospheric fluidized bed combustion boiler cold.

Operating experience of low grade fuels in circulating. The fluidized bed boilers have a wide capacity range 0. A proven concept in steam generators, these stateoftheart systems are designed and manufactured for a wide range of upto 550 tph. Mar 21, 2020 cfbc boiler details pdf presented at national boiler workshop introduction to cfbc boilers by satyanarayana senapathi, vp anjani steels. Performance analysis of 250 mw lignite fired circulating fluidized bed 79 fig. Contact ge steam power today to learn more about our circulating fluidized bed boilers. At the bottom of the boiler furnace there is a bed of inert material. Afbc and cfbc boilers circulating fluidised bed combustion operation manuals presentations. Nov 02, 2016 cfbc is circulating fluidized bed boiler boiler in which coal is burnt in an environment of high concentration of bed material mineral matter derived from combustion of coal retained by using cyclone other means. Among many distinguishable advantages of cfbc boilers, itachievesvery low nox and sox emission by. Cfbc is listed in the worlds largest and most authoritative dictionary database of abbreviations and acronyms. Cfbc is a new generation coal fired fluidized bed boiler developed since 1950 has the advantage of high efficiency low sox and nox. Fuel consumption is less as compared to afbc afbc boiler flue gas.

Circulating fluidized bed combustion boiler thyssenkrupp industries india offers a wide range of worldclass circulating fluidized bed combustion boilers. Design and operating of the maximum capacity 330mw cfb boiler in the maximum capacity 330 mw cfb boiler in china is developed and operates since 01. Pdf the proposed casestudy is to identify the scope of energy conservation. Standard boiler mwerection manual boiler this manual will help you to technical details required during erection of mw boiler. A modern concept in steam generators, these boilers are designed and manufactured for a wide range up to about 550 tph capacity. What is the difference between an afbc and cfbc boiler. Atmospheric and pressurized fluidised bed boilers design their problems. Circulating fluidized bed boiler steinmuller engineering.

Considering available short discussions in few papers, data obtained in bubbling fbc conditions are used so far, for cfbc boiler design, due to the very expensive equipment for investigation processes in the circulating fluidized bed conditions. Developments in circulating fluidised bed combustion. Afbc atmospheric fluidized bed combustion boiler cold start up procedure. In 1992, we cooperated with tsinghua university began the innovation of circulating fluidized bed boiler, by now we have made great progress in cfbc boilers and last year our 116mw cfb hot water boiler was listed as the no1 in a high efficient and environmentally friendly boiler promotion list with the efficiency of 91. Circulating fluidised bed combustion boiler cfbc enmas gb. This is due to the fact that the combustion temperature in a cfbc boiler. It consists of cfbc boiler of 88kgcm2 operating pressure and 510 0 c superheated steam temp. Take advantage of the most economical way to improve efficiency and operating. Difference between a pf boiler and a cfbc boiler following aspects need to be considered before sequencing the operation of a cfbc boiler. Next, the unburned carbon is collected by a hightemperature cyclone located at the boiler exit to recycle to the boiler, thus increasing the denitration efficiency. The wide size range covers boilers from 30 to 1200 mwth. Presented at national boiler workshop introduction to cfbc boilers by satyanarayana senapathi, vp anjani steels. Air preheater is a heat transfer surface in which air temperature is raised by transferring heat from other media such as flue gas. In cfbc boiler there is no air box for boiler in addition that there is one cyclone is for collecting escaped coal particles and again feeding into the furnace.

Cfb boilers can therefore be designed to take essentially. Why is the bed material required in the afbc and cfbc. Cfbc needs huge mechanical cyclones to aquire and recycle the high amount of bed material, which need tall boiler. A coarse fluidizing medium and char in the flue gas are collected by the hightemperature cyclone and recycled to the boiler. Optimization of bed material consumption in a cfbc boiler. Boilers are fuelburning appliances that produce either hot water or steam that gets circulated through piping for heating or process uses.

Circulating fluidized bed cfb combustion boilers gives the flexibility for combustion of a wide range of coals and alternative fuel sources. Performance analysis of 250 mw lignite fired circulating. Soda recovery boiler smelt pabrik kertas di sumatra 4. Figure 3 a categorisation of fuels regarding to the challenges on cfbc boiler design. Photo 1 shows an overview of a cfbc boiler facility. Isgec has separate logistics cell for international projects. Fix the lifting and guide pulleys according to site condition. Cfbc boilers mumbai df power systems private limited. Handle high sulphur, high ash and high moisture fuels, petcoke, sludge, washery rejects, lignite, biomass.

Solids separator hot cyclone plate type plate type uncooled hot cyclones with loop seal assembly are adopted in enmas gb. Take advantage of the most economical way to improve efficiency and operating flexibility, get substantial savings on. Cfbc occurs over longer times and at lower temperatures than pcc, allowing larger particles of fuel to achieve complete combustion whilst mineral impurities remain solid. Deterioration of fuel quality and water quality also leads to poor performance of boiler. Up to 200 tph twelve 12 nos afbc boilers having capacities varying between 55 tph to 170 tph have already been commissioned. The fuels burnt in these boilers include coal, washery rejects, rice husk, bagasse and other agricultural wastes. Technoeconomic analysis of pc versus cfb combustion.