The angle of inclination is for conventional belt conveyors which allow free rollback of material. Bottom ash is mostly coarse in nature hence it needs to be further crushed before being transported to ash handling system. Dense phase pneumatic system conveying speed is low. We specialize in gold mines, silver mines, copper mines, and a wide.
This is a zero pollution plant for bottom ash removal. Ppt solid waste management powerpoint presentation free. Wet ash handling system the free falling ash from boiler furnace is collected and stored in a w shaped water impounded bottom ash hopper provided below boiler furnace for its periodic removal twice in a shift of eight 8 hours per unit. 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. This system is suitable, where coal is to be transferred over shorter distance and space limitations exist. Ash handling system of a thermal power plant slideshare. In pit crushing conveying free download as powerpoint presentation. Assemblage of this information will provide a single point of reference that might otherwise be time consuming to obtain. Coarse ash material such as bottom ash is most often crushed in clinker grinders crushers prior to being transported in the ash conveyor system. 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. A large quantity of ash, is produced in steam power plants using coal.
Download of coal handling plant, power point presentation. Economic analysis, advantages disadvantages of ipcc are also discussed. Actuator subscribe to check out new pneumaticmechanical innovations every week free synopsisppt download links 6. With options varying from fly ash to bottom ash conveyors, and pneumatic versus mechanical ash handling systems, our experts are ready to. Macawber beekay specializes in fly ash handling and bottom ash handling system. Gold and silver mines for sale, lease, or joint venture lists choice proven mining and mineral properties for sale worldwide. System comprises of water impounded refractory lined bottom ash hopper bah of adequate capacity with water seal trough and dip plates. Types of ash handling system in power plant engineering 1.
Ash handling systems have experienced gradual changes since the 1970s, but the kingston event triggered the u. This ppt covers the basics and history of in pit crushing and conveying system. Such ash can be a considerable environmental nuisance as well as being awkward to handle due to its abrasiveness and hydroscopic characteristics. Environmental protection epa to create new regulations for ash handling that will. The fly ash gets collected at various points, with most of it in esp hoppers. Macawber beekays product profile includes jet pumping system for intermittent removal of bottom ash collected at furnace bottom of pf type boilers. Handbook of pneumatic conveying engineering mills 2004. It is absolutely essential to have an efficient fuelhandling system in power plants. Ash handling systems ppt free download as pdf file. Oct 30, 2014 working in coal handling plant in thermal power station. Solid waste management a free powerpoint ppt presentation displayed as a flash slide show on id. Ppt thermal power plant powerpoint presentation free. A power point presentation on ash handling system made by me and my. Ash handling systems may employ different forms of pneumatic ash conveying or mechanical ash conveyors.
Ash handling equipment is one of the most crucial links in the solid fuel, biomass boiler, and combustion systems chain. Generally, an ebook can be downloaded in five minutes or less. Coal handling storage of coal the main purpose of storage of coal is to store the coal for a period of 30 to 90 days, therefore the plant is not required to be shut down due to failure of normal supply of coal. There the similarity ends, however, for the material within these parts has been completely updated, substantially extended and redeveloped to make it more accessible. Fly ash is the major constituent of the ash generated from pulverized and fluidized bed coalfired boilers.
Introduction to thermal power plant general layout of thermal power plant site selection criterion of thermal power plant coal preparation coal storage ash handling electrostatic precipitator. The value of bottom ash generated is around 20 % of total ash. Thermal power plant powerpoint presentation free to download id. Such ash can be a considerable environmental nuisance as well as being awkward to handle due to its abrasiveness and hydroscopic. Indian coal is managed using giant coal handling plants chps. Ash handling system free download as powerpoint presentation. Ash conveying systems densephase pneumatic conveying.
Dry ash handling eliminates chances of ash freezing, picking or sticking to storage bins. Retrofit of all ash handling and storage systems for 2 x mwatt boilers including bottom ash, fly ash, pyrites, back pass and air heater ash positions. Bottom ash handling system macawber beekay, bottom ash. Wet ash handling system wet type systems have water impounded hopper and jet pumps for intermittent removal the bottom ash fall into a wtype 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.
Requirement of ash handling system in thermal power plants coal is generally used as fuel and hence the ash is produced as the byproduct of combustion. Fly ash drops down wherever the flue gas stream changes direction or its velocity reduces. Ash collected in economiser, primary air heater and secondary air heater hoppers drops continuously through suitable vertical pipe. Jun 26, 2018 wet ash handling system the free falling ash from boiler furnace is collected and stored in a w shaped water impounded bottom ash hopper provided below boiler furnace for its periodic removal twice in a shift of eight 8 hours per unit. 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. Fly ash handling wherever products are burned it is necessary to have an energy efficient ash handling system, especially in a power station environment where large quantities of pulverized fuel ash pfa are created. For this second edition of the pneumatic conveying design guide i have followed a similar format to the. Normally positioned on top of a silo or storage hopper, it performs the principal separation between ash particulates and the ash conveying air flow by means of cyclonic action forces. Learn more powerpoint presentation of ash handling system of power plant the coal for this power plant is delivered by ship, ash handling, contact supplier.
Fly ash around 80 % of ash generated in thermal power plant is fly ash. Introduction in india 65% of total power is generated by the thermal power stations. Flexibility in operation to suit various plant conditions. Ash handling pneumatic conveying handling system from schenck process the schenck process method of fly ash handling is clean, efficient and fully enclosed, with exceptional reliability and requiring. May 07, 2014 requirement of ash handling system in thermal power plants coal is generally used as fuel and hence the ash is produced as the byproduct of combustion. This information will help to achieve increased reliability at a decreased cost.
The hot ash from the furnace gets quenched as it enters into the water minimizing the clinker. Vacuum type pneumatic system clear space is available below esp area. Pressurized pneumatic ash conveying may also be employed. Dry ash handlingpresentation free download as powerpoint presentation. Wet ash system is can be utilized for bottom ash handling with water impounded hopper and jet pumps for intermittent removal. May 04, 2017 coal still is the main source of electricity products and for manufacture of steel and prime source of heat for boilers.
Ash handling system what are the types of ash in thermal power plant. One important, but often overlooked factor of an efficient ash handling system, is its compatibility with your facility. Precautions for safe handling, including recommendations for handling incompatible chemicals, minimizing the release of the chemical into the environment, and providing advice on general hygiene practices e. Ppt thermal power plant powerpoint presentation free to. System comprises of water impounded refractory lined bottom ash hopper. Maintenance of ash handling plants and pneumatic conveying. Scribd is the worlds largest social reading and publishing site. Found in plants around the world, ash handling systems are set up in harsh environments where they endure intense temperatures. Aug 09, 2016 introduction to thermal power plant general layout of thermal power plant site selection criterion of thermal power plant coal preparation coal storage ash handling electrostatic precipitator. Ash handling system 1 free download as powerpoint presentation. Find details of companies offering ash handling systems at best price.
Bottom ash water recirculation system complete with dewatering bins, settling tank and surge tank facility. Ash from the various collecting points is pneumatically conveyed to the ash storage silo and is unloaded at regular periods for final disposal without creating a dust nuisance. Ash handling systems ducon supplies both wet and dry type ash systems for power plants. Coal still is the main source of electricity products and for manufacture of steel and prime source of heat for boilers. Pdeen bandhu choturam thermal power plant is a project of haryana power generation corporation limited hpgcl. Pneumatic conveying design guide nong lam university. Ash handling system power plant engineering amit mak. Installation cost per ton of ash handled is less than that in other systems. Detroit ash handling systems are designed for effective, economical and trouble free disposal of ash from units burning coal or solid refuse fuels. Oct 15, 2017 types of ash handling system in power plant engineering 1. The fly ash unloading system eth consists of the ash storage in two silos and unloads them in the closed tankers and in the open trucks design basis the ash unloading system has to be able to store fly ashes coming from a pneumatic ash handling system and to discharge them in open trucks and in closed tankers. Mar 22, 2018 job free notes free tutorials for mechanical department. Ash handling system wet ash and dry ash system full information duration. Very finely sized fly ash often accounts for the major portion of the material conveyed in an ash handling system.
One of the methods for handling fly ash is wet system in which the ash is mixed with water to form slurry which is. Thermal power plant free download project of php,java,asp. Ash handling system in thermal power plant ash handling. One of the methods for handling fly ash is wet system in which the ash is mixed with water to form slurry which is pumped to slurry pit. Ash handling options for coalfired power plants power. Ash handling system power plant engineering amit mak youtube. A free powerpoint ppt presentation displayed as a flash slide show on id. How coal is managed in the giant coal handling plants of. Wet ash handling systems project engineering division. The centrifugal ash receiver has an important role in ash handling systems.
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