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Brown Coal
Lignite (derived from Latin ''lignum'' meaning 'wood'), often referred to as brown coal, is a soft, brown, Combustion, combustible sedimentary rock formed from naturally compressed peat. It has a carbon content around 25–35% and is considered the Coal rank, lowest rank of coal due to its relatively low Heat of combustion, heat content. When removed from the ground, it contains a very high amount of moisture, which partially explains its low carbon content. Lignite is mined all around the world and is used almost exclusively as a fuel for steam-electric power generation. Lignite combustion produces less heat for the amount of carbon dioxide and sulfur released than other ranks of coal. As a result, lignite is the most harmful coal to human health. Depending on the source, various toxic heavy metals, including naturally occurring radioactive materials, may be present in lignite and left over in the coal fly ash produced from its combustion, further increasing health risks. Cha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Briquette
A briquette (; also spelled briquet) is a compressed block of coal dust or other combustible biomass material (e.g. charcoal, sawdust, wood chips, peat, or paper) used for fuel and kindling to start a combustion, fire. The term is a diminutive derived from the List_of_English_words_of_French_origin_(A–C)#B, French word ''brique'', meaning brick. Coal briquettes Coal briquettes have long been produced as a means of using up 'small coal', the finely broken coal inevitably produced during the coal mining, mining process. Otherwise this is difficult to burn as it is hard to arrange adequate airflow through a fire of these small pieces; also such fuel tends to be drawn up and out of the chimney by the chimney draught, draught, giving visible black smoke. The first briquettes were known as culm bombs and were hand-moulded with a little wet clay as a binder. These could be difficult to burn efficiently, as the unburned clay produced a large ash content, blocking airflow through a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coal Assay
Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen. Coal is a type of fossil fuel, formed when dead plant matter decays into peat which is converted into coal by the heat and pressure of deep burial over millions of years. Vast deposits of coal originate in former wetlands called coal forests that covered much of the Earth's tropical land areas during the late Carboniferous ( Pennsylvanian) and Permian times. Coal is used primarily as a fuel. While coal has been known and used for thousands of years, its usage was limited until the Industrial Revolution. With the invention of the steam engine, coal consumption increased. In 2020, coal supplied about a quarter of the world's primary energy and over a third of its electricity. Some iron and steel-making and other industrial processes burn coal. The extraction ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turów Power Station
Turów Power Station is a coal-fired power station A coal-fired power station or coal power plant is a thermal power station which burns coal to generate electricity. Worldwide there are about 2,500 coal-fired power stations, on average capable of generating a gigawatt each. They generate ... in Bogatynia, Poland. The power station, operated by state-owned Polska Grupa Energetyczna via Oddział Elektrownia Turów, is fuelled by lignite extracted from the nearby Turów coal mine. Operations at the plant began in 1962. As of 2021 it supplied 5% of Poland's electricity and is the sole provider of heat and hot water to hospitals, schools and homes in Bogatynia. The plant initially consisted of ten 200 MW units, commissioned from 1962 to 1971. PGE undertook a US$1.6 billion modernization of units 1-6 of the plant in the early 1990s. Units 7-10 have been phased out. Unit 7 was retired in 2003. In 2010, Unit 8 was retired. Units 9 and 10 were decommissioned in 2012–2013. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bełchatów Power Station
Bełchatów Power Station is a coal-fired power station near Bełchatów, Poland. It is Europe's largest coal-fired power station as well as the most toxic one. The power station is owned and operated by PGE GiEK Oddział Elektrownia Bełchatów, a subsidiary of Polska Grupa Energetyczna. In 2011, a new 858 MW unit was commissioned. increasing the station's total capacity to 5,053 MW. The new unit has an efficiency rating of approximately 42%, contributed to reduction of both fuel consumption and emissions compared to the older units. The unit has been built by Alstom. Alstom also has modernized the low pressure parts in all 12 turbines and, in 2009, PGE and Alstom signed a contract to modernise unit 6. After modernization of other units, the total installed capacity reached 5,420 MW in 2015. In 2017, the electrical capacity of Elektrownia Bełchatow was increased to 5,472 MW. The plant's current achievable capacity is 5,102 MW. In the second half of 2019, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Energy Density
In physics, energy density is the quotient between the amount of energy stored in a given system or contained in a given region of space and the volume of the system or region considered. Often only the ''useful'' or extractable energy is measured. It is sometimes confused with stored energy per unit mass, which is called ''specific energy'' or . There are different types of energy stored, corresponding to a particular type of reaction. In order of the typical magnitude of the energy stored, examples of reactions are: Nuclear power, nuclear, Chemical energy, chemical (including Electrochemistry, electrochemical), electrical, pressure, Deformation (engineering), material deformation or in Electromagnetic field, electromagnetic fields. Nuclear reactions take place in stars and nuclear power plants, both of which derive energy from the binding energy of nuclei. Chemical reactions are used by organisms to derive energy from food and by automobiles from the combustion of gasoline. Liqu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
In Jewelry
IN, In or in may refer to: Dans * India (country code IN) * Indiana, United States (postal code IN) * Ingolstadt, Germany (license plate code IN) * In, Russia, a town in the Jewish Autonomous Oblast Businesses and organizations * Independent Network, a UK-based political association * Indiana Northeastern Railroad (Association of American Railroads reporting mark) * Indian Navy, a part of the India military * Infantry, the branch of a military force that fights on foot * IN Groupe, the producer of French official documents * MAT Macedonian Airlines (IATA designator IN) * Nam Air (IATA designator IN) * Office of Intelligence and Counterintelligence, sometimes abbreviated IN Science and technology * .in, the internet top-level domain of India * Inch (in), a unit of length * Indium, symbol In, a chemical element * Intelligent Network, a telecommunication network standard * Intra-nasal (insufflation), a method of administrating some medications and vaccines * Integrase, a retr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black Coal Equivalent
Black coal equivalent (BCE) is an export coal product derived from the Coldry Process, a patented coal upgrading technology operated by Environmental Clean Technologies Limited, in Victoria, Australia. The Coldry Process is applied to brown coal (lignite) with a typical moisture content of 60 per cent by weight and transforms the coal into a densified coal product of equal or better calorific value (5,800 kcal/kg) to typical export quality black coal, with less ash and sulfur content. Black coal equivalent derived from brown coal is ostensibly a 'cleaner' burning coal fuel than most black coals. Overview Densified coal as a ''black coal equivalent'' product derived from brown coal was first discovered by R. B. Johns and colleagues at the Organic Chemistry laboratory at Melbourne University following observations made at the Maddingley Mine near Bacchus Marsh, Victoria. Johns and colleagues identified that a process of low-mechanical shear applied to brown coal mixed with a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calorific Value
The heating value (or energy value or calorific value) of a substance, usually a fuel or food (see food energy), is the amount of heat released during the combustion of a specified amount of it. The ''calorific value'' is the total energy released as heat when a substance undergoes complete combustion with oxygen under standard conditions. The chemical reaction is typically a hydrocarbon or other organic molecule reacting with oxygen to form carbon dioxide and water and release heat. It may be expressed with the quantities: * energy/ mole of fuel * energy/mass of fuel * energy/volume of the fuel There are two kinds of enthalpy of combustion, called high(er) and low(er) heat(ing) value, depending on how much the products are allowed to cool and whether compounds like are allowed to condense. The high heat values are conventionally measured with a bomb calorimeter. Low heat values are calculated from high heat value test data. They may also be calculated as the difference betwe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
