Both gas and oil fired boilers use controlled combustion of the fuel to heat water. Performance guarantee test, efficiency of cfbc boiler,various heat loses, waste heat. This cfbc technology utilizes the fluidised bed principle in which crushed 6 12 mm. Air preheater is a heat transfer surface in which air temperature is raised by transferring heat from other media such as flue gas. Boilers bureau of energy efficiency 27 syllabus boilers. By the use waste flue gas parameters to produce electricity as byproduct using a special principle called magneto hydro dynamic mhd principle. The features of circulating fluidizedbed boilers are described below. What is boiler and its working principle engineering. Afbc and cfbc boilers circulating fluidised bed combustion operation manuals presentations.
The boiler is essentially a closed vessel inside which water is stored. Steam boiler working principle and types of boiler. Circulating fluidized bed cfb boilers boilers product lineup. All this without compromising efficiency and with reduced emissions. Atmospheric and pressurized fluidised bed boilers design their problems. This chapter is devoted to basic aspects of circulating fluidized bed combustion cfbc. Cfbc is a new generation coal fired fluidized bed boiler developed since 1950 has the advantage of high efficiency low sox and nox. Low fuel cost with the cheap powder lignite low electricity consumption short startup time. Working principle of steam boiler is very very simple.
What is the working principle of cfbc boiler 20170606 15. Here ash leaving with flue gas is recirculated to combustion zone. Extensive research has been conducted on this technology for the past 10 years because pollution in the world is getting more serious by the day and clean practice will be very crucial for the sustainability of the earth. Steam boiler definition, working principle, types, and. The basic working principle of boiler is as follow. Afbc and cfbc boilers operation manuals boilersinfo. The cfbc boiler supplied by chinese company has been in operation for about 3 months prior to my visit to this plant. The key boiler components involved in this process are the. Fuel generally coal is burnt in a furnace and hot gasses are produced. Take advantage of the most economical way to improve efficiency. Circulating fluidized bed technology 4th eu south africa clean coal working group meeting. Boiler or more specifically steam boiler is an essential part of thermal power plant. Circulating fluidized bed is a relatively new technology with the ability to achieve lower emission of pollutants.
A modern concept in steam generators, these boilers are designed and manufactured for a wide range up to about 550 tph capacity. Circulating fluidized bed boiler cfb boiler how does it. These hot gasses come in contact with water vessel. Circulating fluidised bed combustion boiler cfbc capacities.
Conventional boilers for power generation can use only fossil fuels, such as highgrade coal, oil, and gas. American foreign relations a history volume 2 since 1895 pdf download. Circulating fluidized bed combustion has given boiler and power plant operators a greater flexibility in burning a wide range of coal and other fuels. Afbc boiler, afbc boiler working principle,atmospheric fluidised bed combustion. Key benefits are fuel flexibility, reduced emission and lower bed temperature. Further six 6 nos afbc boilers afbc boiler operation under various stages of. Cfb boilers from mitsubishi hitachi power systems mhps are able to combust a wide range of fuels, including bituminous.
Introduction to cfbc boiler cfbc boiler work on principle of. Deaeration is needed to control the corrosion processes in the downstream system. Circulating fluidised bed combustion boiler cfbc enmas. Steam is supplied to the steam boiler in differen field like steam engine,steam turbine,thermal power plant,various heating installation process,different cotton mills,sugar factories etc. Drivers for consideration for cfbc selection cfb available with usc designs up to 800 mwe with. A boiler is used in many industries such as in steam power generation, in sugar industries, in textile industries for sizing and bleaching etc. The water in the boiler should have a ph level of between 7. Basic design of circulating fluidized bed boiler 8 february 2012 pichai chaibamrung asset optimization engineerreliability maintenance asset optimization section energy division thai kraft paper industry co. Can work at 20100% capacity without problems low steam cost. Handle high sulphur, high ash and high moisture fuels, petcoke, sludge, washery rejects, lignite, biomass.
Msw consumer pdf mixed plastics consumer pdf wood and plastics polyolefin. Steam boiler or simply a boiler is basically a closed vessel into which water is heated until the water is converted into steam at required pressure. This article gives a brief description of the working of a cfb boiler. The equipment, which is used in this method, is called deaerator. Simulation training system of a circulating fluidized bed boiler. The basic working principle of boiler is very very simple and easy to. At the bottom of the boiler furnace there is a bed of inert material. Cfbc boiler stands for circulating fluidized bed combustion boiler. Why choose zg as afbc boiler working principle manufacturer. Hot air is necessary for rapid combustion in the furnace and also for drying coal in milling plants. This cfbc mechanism uses the fluidized bed principle in which squash 7 mm size fuel and limestone are feeded into the. A boiler can be defined as a closed vessel in which steam is produced from water by combustion of fuel.
The simple boiler is like a barrel, consisting of a cylindrical steel shell, with the ends closed by flat steel heads. Circulating fludize bed combustion cfbc boiler authorstream. Triad highly recommends that boiler feed water be treated before it enters the boiler. Steam boiler working principle and types of steam boiler. The process through which the dissolved corrosive gases are removed from the boiler feed water is called deaeration. Circulating fluidized bed cfb combustion boilers gives the flexibility for combustion of a wide range of coals and alternative fuel sources.
Today we will discuss boiler deaerator working principle. Circulating fluidized bed cfb combustion boilers gives the flexibility for. Steam turbine is a power machine taking overheated steam with certain temperature and pressure as its motive force, and converting the heat energy of steam to mechanical energy of rotor rotation. Cfbc boiler manufacturer, steam boiler working principle pdf faq about steam boiler working principle pdf 1. Different versions industrial boilers ore developing with gradual change in their design of different parts and to optimize the thermal efficiency, fuel multiplicity and to sustain with environmental norms, with cost effectiveness for installation operation and maintenance. It is partly filled with water and then sealed, after which a. Cfbc working principle the circulating fluidized bed combustion technology, cfbc, uses greater combustor superficial gas velocities than the bubbling bed. Circulating fluidized bed boiler cfb boiler how does it work and its principle 1. Circulating fluidized bed combustion cfbc pdf free. Nuclear power plant working principle may 10, 2017 19,333. Circulating fluidized bedcfb boiler working principle. Introduction, mechanism of fluidised bed combustion.
M i r e k, czestochowa university of technology, poland doi. At high fluidizing velocities 4 to 6 ms part of the bed material becomes entrained and is carried through the combustion chamber along with the flue gases. What is a steam boiler working principle, types of steam boilers generally, a steam boiler is a type of closed container, designed with steel for heating the water to generate steam by some energy source like burning of fuel with eventually. Afbc boiler, afbc boiler working principle,atmospheric. Circulating fluidizedbed combustion technology cfbc.
Atmospheric and pressurized fluidised bed boilers design. Circulating fluidizedbed combustion technology cfbc technology overview. The cethar cfbc boiler operates on the circulating bed principle. Fbc boilers bureau of energy efficiency 144 figure 6. Why choose zg as steam boiler working principle pdf manufacturer. Introduction to cfbc boiler cfbc boiler work on principle of w hen an evenly distributed air or gas is passed upward through a finely divided bed of solid particles such as sand supported on a fine mesh, the particles are undisturbed at low velocity. Solids separator hot cyclone plate type plate type uncooled hot cyclones with loop seal assembly are adopted in enmas gb cfbc boilers. Developments in circulating fluidised bed combustion. Types, combustion in boilers, performances evaluation, analysis of losses, feed water treatment, blow down, energy conservation opportunities. We have over 70 years experience of industrial steam boiler and autoclave,and we have a professional installation and aftersales staff for products. We have over 70 years experience of boiler and autoclave, and we boller a professional installation and aftersales staff for products.
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