- published: 21 Dec 2016
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Bottom ash is part of the non-combustible residue of combustion in a furnace or incinerator. In an industrial context, it usually refers to coal combustion and comprises traces of combustibles embedded in forming clinkers and sticking to hot side walls of a coal-burning furnace during its operation. The portion of the ash that escapes up the chimney or stack is, however, referred to as fly ash. The clinkers fall by themselves into the bottom hopper of a coal-burning furnace and are cooled. The above portion of the ash is referred to as bottom ash too.
In a conventional water impounded hopper (WIH) system, the clinker lumps get crushed to small sizes by clinker grinders mounted under water and fall down into a trough from where a water ejector takes them out to a sump. From there it is pumped out by suitable rotary pumps to dumping yard far away. In another arrangement a continuous link chain scrapes out the clinkers from under water and feeds them to clinker grinders outside the bottom ash hopper.
Bottom may refer to:
Incinerator bottom ash (IBA) is a form of ash produced in incineration facilities. This material is discharged from the moving grate of municipal solid waste incinerators. Following combustion the ash typically has a small amount of ferrous metals contained within it. This ash can be processed to standardize the material and remove contaminants in order for it to be used as an aggregate. Following processing the material can be termed IBA aggregate or processed IBA. The aggregate uses for the material include:
Alternatively if there are no local markets for the IBA the material is typically disposed of in a landfill.
If IBA is used as the aggregate in Foam Concrete in non-ventilated areas, hydrogen gas deposits may build up during the lifespan of the material and explode when brought into contact with sources of ignition, such as during cutting with grinding equipment. Suspicion of this has resulted in its use being banned by at least two firms in the US and brought about further investigation by the Health and Safety Executive.
Constructed in 2015 by the Danish company AFATEK, the recycling plant for IBA is equipped with state-of-the-art technology: Five lines, each and every one of them boasting different grain sizes, separate valuable metals from minerals. This way, valuable metals can be reclaimed to sustain the environment. All of the separating units are designed by IMRO Maschinenbau GmbH, providing a high degree of separation, the highest levels of purity and proven reliability. RecycleCraft by IMRO: Contact us and benefit from our expertise and experience. We would like to thank AFATEK and ScenicImage for the smooth collaboration. Find the detailed non-ferrous sorting of fines here: https://youtu.be/KOiPbsgfCDA
Recovering the best of the rest: BHS recycling plant for the treatment of incinerator bottom ash in two process stages (English, 1920 x 1080 pixel)
Dry bottom ash handling system
High-capacity dry bottom ash handling system for reducing environmental impact and costs.
Raymond Brown are leaders in the recycling of incinerator bottom ash. At the Ardley Energy Recovery Facility they are working in partnership with Viridor to recycle Oxfordshire's incinerated ash into a sustainable product which can be used as an aggregate in construction.
Power boiler sidewalls form a funnel or chute at the bottom that channels heavy ash into a water trough where it cools and falls into grinders during removal
Washing plant for incenerator bottom ash
An experimental investigation of partial replacement of fine aggegate by "BOTTTOM ASH". BY THE STUDENTS OF SDM POLYTECHNIC Ujire Civil Department
Bottom ash from waste incineration consists mainly of secondary raw materials from great interest. For instance, ferrous metals, stainless steel, aluminium, copper and brass are comprised. Besides, the remaining mineral aggregates have good construction properties to be used in road construction or in landfill construction. Unfortunately, bottom ash also holds impurities and pollutants. Moreover, in the course of aging mineral coatings growth on the surfaces of the metals. In succession the bottom ash growth together and will be cemented. Therefore researcher explore new methods for the treatment of bottom ash to improve the recovery of metals and to ensure the environmentally responsible application. In order that natural resources will be preserved. For the welfare of the environment....
Incinerator bottom ash is the residue left over from the incineration process, materials range from cloth, stainless steel, copper, aluminium etc. The clean up process involves a screen removing the fines fraction that can go for further washing, oversize to the Ecohog to remove heavy material that can then go on for crushing and washing, and removes steel. The light contaminant fraction that is removed can go back into the waste processing system again for further separation or back to incineration.
This is the video clip of bottom ash hopper of 600 MW opposite wall fired boiler.The ash collection is substantially low compared to the tangential fired boiler
See the results of using the various sensor-based sorting technologies STEINERT has to offer for bottom ash treatment.
Ash removal system used for pallet scrap thelogboiler.com
Engineering Manager Joe Paul discusses the value of Clinker Crushers for reducing the bottom ash or clinker produced by the types of boilers most commonly found in utility and industrial power plants. Learn more at http://www.terrasource.com.
Find more Earth Focus content at https://www.linktv.org/earthfocus (Earth Focus: Episode 64) People in three adjacent Pennsylvania communities suffer from a rare blood cancer. In Juliette, Georgia, where radioactive water flows from the tap, people are also getting sick. What else do these communities have in common? Coal ash. Some 130 million tons of it is generated in the US each year. It contains toxins like lead, arsenic and mercury and it gets into ground water from unlined pond and pit storage sites. The federal government says it's non-hazardous and regulation is left to state governments where the coal industry has great influence. And it's always people who suffer the consequences. Read Earth Focus correspondent Miles Benson's blog post, "Coal Ash: Both Beneficial and Poisonous?...
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
An epidermoid cyst (Epidermal Inclusion cyst, Infundibular cyst), is a benign growth commonly found in the skin and typically appears on the face, neck or trunk, but can occur anywhere on the body. Another name used is “sebacous cyst” but this is actually an antiquated misnomer, and is not a term used by dermatologists. They are also the most common type of cutaneous cysts. Epidermoid cysts result from the reproduction of epidermal cells within a confined space of the dermis. The pasty contents are mostly composed of macerated keratin (wet skin cells), which creates this “cheesy” consistency, and there can be a pungent odor. An epidermoid cyst may have no symptoms and are typically harmless. Usually people seek removal but they don’t like the appearance of these bumps, or the cyst has ru...
The misadventures of The Professor, including, but not limited to, bottlecaps to the face, feral snuggling, and why you do not want to be on the bottom of a Supermutant cuddle pile. Channel art done by the fabulous ineffablewitch, you may commission her here: http://ineffablewitch.tumblr.com/post/147366458448/as-some-of-you-may-know-i-broke-my-ankle-on-my Silly edits by me.
Pulverised fuel ash an excellent clinker replacement material for the Dutch concrete and cement industry, Ad Korthout, Vliegasunie B.V. Presentation given at the Global CemTrader conference on Supplementary Cementitious Materials (SCM), coal & petcoke for the global cement, lime and concrete industry, 10 - 11 May 2012, London, UK.
This is the second video in a series of videos. For more information, like the FB page "Clearing the Air Initiative": https://www.facebook.com/Clearing-the-Air-Initiative-980498032006400/?fref=ts 0:00 - Beginning 1:26 - In Attendance 2:09 - The Project 2:29 - Saugus Wheelabrator Inc. 5:35 - The Slurry Wall 9:14 - The Incinerator 10:15 - Fly and Bottom Ash 12:38 - Controls/Tests 21:49 - Ash Toxicity? 23:48 - The case of Claremont, NH 26:41 - Comm. 97 30:17 - The tour 33:04 - The Settlement 35:44 - After 30 years? 37:45 - Concerns 49:47 - Saugus board of health meeting, September 14th, 2015
While Ash is doing some special training at Cynthia’s house in preparation for the Unova League, the villains of Team Rocket are finishing preparations to launch their latest diabolical scheme: Operation Tempest! After watching a training battle, Meloetta wants in on the action. Ash and Krookodile have just accepted Meloetta’s challenge when an enormous Golurk descends upon the battlefield, ridden by its Trainer, Larry—who immediately accuses Ash of being a villain and kidnapping Meloetta! The misunderstanding is quickly sorted out, and Larry explains that he’s one of Meloetta’s protectors, and that he and Golurk have been looking for the Mythical Pokémon for quite some time after it was taken away by some unknown villains. The villains in question quickly make themselves known: a pair o...
LEGO Ninjago Set! 853687 26 Parts | £10.99 / $12.99 / 12.99€ There is a Superchat function at the bottom of the chat window if you'd to support the channel! If you have a question for us Check out the FAQ below first! Chat Rules: 1: Don't spam 2: No racism, profanity, sexism, etc. 3: Don't promote your channels or ask for subs 4: No Movie Spoilers 5: Be a decent person, in general. FAQ: Where this weird accent guy (Mike) is from? - Poland Pancakes or waffles? - Crepes! Marvel or DC? - DC (Jack), Marvel & AC/DC (Mike) Favorite LEGO Theme? - City (Jack), Star Wars (Mike) Favorite LEGO Set? - UCS Slave 1 (Jack), UCS Millenium Falcon (Mike) Do we like LEGO? - a little bit, yeah. How much do we/did we spend on LEGO? - too much How do we get the monies for all this LEGO?! - hard work! Subscr...
One of the best albums ever made. If you like it, support the band and get a copy! 01 At the Bottom of Everything 00:00 02 We Are Nowhere and It's Now 04:36 03 Old Soul Song (For the New World 08:52 04 Lua 13:25 05 Train Under Water 17:57 06 First Day of My Life 24:03 07 Another Travelin' Song 27:14 08 Land Locked Blues 31:34 09 Poison Oak 37:24 10 Road to Joy 42:24
Q and A. Cortland needs a Zero Waste strategy, NOT incinerator ash. Cortland, NY, January 18, 2014. Paul Connett, PhD, is Executive Director American Environmental Health Studies Project (AmericanHealthStudies.org) and author of "The Zero Waste Solution". For slide presentation, go to http://youtu.be/w56OkDOI6DQ