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A Mechanical Ash Handling System is often the best choice for fluidized bed ash where headroom is restricted under the boiler. The Mechanical Ash Handling System handles the ash by Bottom Ash Handling System, Fly Ash Handling System, Ash disposal system up to the Ash disposal area and water recovery system from ash pond and Bottom ash overflow.
PowerPoint Presentation: What is Ash Handling? Photomicrograph made with a Scanning Electron Microscope (SEM): Fly ash particles at 2,000 x magnification Ash handling refers to the method of collection, conveying, interim storage and load out of various types of ash residue left over from solid fuel combustion processes.
Feb 25, 2016· Fly Ash Handling System. In Fly Ash Handling System, the major objective is to collect and transport the fly ash from the ash hoppers of the ESP to the Fly ash silo or to the Ash Slurry making tank. Generally the power plants prefer Dry Fly ash Disposal instead of making Ash Slurry from the Fly ash and the reason is that the fly ash collected ...
May 07, 2014· Requirement of Ash Handling System In Thermal Power Plant's coal is generally used as fuel and hence the ash is produced as the byproduct of Combustion. Ash generated in power plant is about 30- 40% of total coal consumption and hence the system is required to handle Ash for its proper utilization or disposal.
ppt on ash handlin plant in the thermal power plant. Mar 29 2012 PowerPoint Presentation Coarse ash material such as bottom ash is most often crushed in clinker grinders crushers prior to being transported in the ash conveyor system Very finely sized fly ash often accounts for the major portion of the material conveyed in an ash handling system It is collected from baghouse type dust collectors
When new power plants were being designed in the 1970's, the state of the art ash handling systems at the time were closed loop water recirculation systems that involved a "tank farm" thousands of feet away from the boiler. Figure 5: Conventional Bottom Ash Dewatering System
Ash handling systems may employ different forms of pneumatic ash conveying or mechanical ash conveyors. A typical ash handling system may employ vacuum pneumatic ash collection with ash conveying from several ash pick up stations and resulting in delivery to an ash storage silo for interim holding prior to load out for disposal or reuse.
Jun 01, 2013· 3.Fly Ash It is collected from :-1-ESP hoppers 2-Air preheaters hoppers 3-Economiser hoppers It is 80% of total ash. 4.Wet system In this system ash conveying media is water.
A second stage system - positive pressure system is employed to convey fly ash from ISH to main fly ash Silo(s). Vacuum system envisages conveying of dry fly ash from ash hoppers by vacuum pumps and collection in ISH. Each vacuum pump, dedicated to a stream, can convey both coarse and fine ash.
Feb 01, 2011· Ash handling systems have experienced gradual changes since the 1970s, but the Kingston event triggered the U.S. Environmental Protection (EPA) to create new regulations for ash handling that will ...
Dec 29, 2009· RECOMMENDATION : RECOMMENDATION BOTTOM ASH HANDLING SYSTEM Scrapper Chain and Belt Conveyor FLY ASH HANDLING SYSTEM Dense Phase Pressure type ASH DISPOSAL SYSTEM Lean Slurry Disposal System CONTENTS
Mechanized ash handling systems developed as the size of coal fired boilers increased beyond the sizes permitting manual handling of large quantity of ash. In a coal based thermal power plant, huge amount of ash is generated which has to be disposed off continuously. Typically for a 2x500 MW plant based on Indian coal, the amount of ash ...
Aug 12, 2015· Ash handling system 1. Ash Handling Systems V.V.S.PRADEEP 2. CONTENTS • ASH DISPOSAL • ASH HANDLING EQUIPMENT • ASH HANDLING SYSTEMS • ASH DISCHARGE EQUIPMENTS • SITE SELECTION 3. ASH DISPOSAL : 1. A large quantity of ash, is produced in steam power plants using coal. 2. Ash produced in about 10 to 20% of the total coal burnt in the ...
An ash handling system consists of some subsystems such as bottom ash (BA), fly ash (ESP/air heater), ash water, and ash disposal systems. The ash handling system may be dry (dry pneumatic conveying is more popular now on account of retention of original characteristics of fly ash and its utilization), semiautomatic wet, and a wet system.
UHV = Useful Heat Value in Kcal / Kg / A = Ash content (%) M = Moisture content (%) ... LAY OUT OF COAL HANDLING PLANT BTPS WT 1 WT 2 WT 3 B BR HOUSE B B Con.11A/B C O A L Y A R D OCHP NCHP 20-Sep-13 CR HOUSE ... •Line up the system by starting each equipment from the last conveyor in the up-stream path.
Ash Handling System authorSTREAM. 2011-7-19 Wet Ash Handling System: Wet Ash Handling System Wet type systems have water impounded hopper and jet pumps for intermittent removal The bottom ash fall into a W-type water impounded (water filled) ash storage hopper The stored ash is removed by means of jet pumps and transported in slurry pipe lines to the ash slurry sump for its .
Ash & Material Handling Babcock & Wilcox. Bottom ash systems. Fly ash The hydraulic bottom ash handling system, utilizing the HYDROSEAL pump, dominated the ash handling industry until the introduction of the jet pump which provided improved performance at a lower cost with reduced maintenance. 1950 1959 1950 1959 . Get Price
Entire range of Ash Handling Systems are supplied by DCIPS to meet the requirement of small as well as large power boilers including 500MW units and above.. DCIPS offers efficient and highly reliable technologies.DCIPS manufactures Dry and Wet Fly Ash Handling Systems for Bottom Ash Handling to achieve a pollution free plant.. DCIPS is the pioneer in providing Operation and Maintenance ...
This system is suitable, where coal is to be transferred over shorter distance and space limitations exist. The initial cost of the system is low. It suffers from the drawbacks that the power consumption is high and there is considerablewearofscrew. Rotation of screw varies between 75-125 R.P.M.
Jul 19, 2011· Wet Ash Handling System: Wet Ash Handling System Wet type systems have water impounded hopper and jet pumps for intermittent removal The bottom ash fall into a W-type water impounded (water filled) ash storage hopper The stored ash is removed by means of jet pumps and transported in slurry pipe lines to the ash slurry sump for its further disposal
Ash Handling System |authorSTREAM. Wet Ash Handling System: Wet Ash Handling System Wet type systems have water impounded hopper and jet pumps for intermittent removal The bottom ash fall into a W-type water impounded (water filled) ash storage hopper The stored ash is removed by means of jet pumps and transported in slurry pipe lines to the ash slurry sump for its further disposal
Ash Handling System.ppt - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. Ash Handling System
Jun 23, 2015· Systems that use impounded hoppers or submerged scrapper conveyors have traditionally handled ash using water as a primary medium. Now, however, a growing emphasis on environmentally-friendly production has caused many power plants to reconsider elements of their production process that aren't green – and that includes ash handling.
Apr 18, 2013· ppt of coal handling systems. ... »More detailed. coal and ash handling system ppt. Free PPT Templates, Presentations, Lecture Notes, Files for Download, View and Edit – coal ash handling system power plant, Free PowerPoint templates for ... Conveyors are seen on virtually all in the Coal Handling Plant (CHP).
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