methodology of coal water slurry
Coal Refuse and slurry - Center for Coalfield Justice
Coal refuse is any waste that results from the processing and cleaning of the coal, including slurry, culm, slate, clay or other materials associated with or from a coal seam. Toxic substances in the waste--including arsenic, mercury, chromium, and cadmium--can contaminate drinking water supplies and damage vital human organs and the nervous ...
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Coal-CO2 Slurry Feed for Pressurized Gasifiers: Slurry ...
, relative to water [4]. Unlike coal-water slurry, however, coal-CO 2 slurry cannot be prepared at ambient pressure: the triple point pressure of CO 2 is 5 bar so CO 2 cannot exist in its liquid state at lower pressures including ambient. Various methods for preparing coal-CO 2 slurry have been suggested, all of which use lock hoppers to
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Clean Energy and Water Technologies: Coal-water-slurry- a ...
The coal-water-slurry fluid has a property similar to a Hydrocarbon as shown below. Density 65-70%,Viscosity 1000Cp, Size d 50 microns, Ash content 7, Sulfur0.5%. It is easier to handle a liquid than solid coal. Pulverised coal is pneumatically conveyed and fired in rotary cement kilns for so many years. There is nothing new about it.
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Study on the Preparation of Coal Water Slurry and Its ...
processing method of coal water slurry is simple. Compared with coal gasification and liquefaction, it has less investment and good stability. The cost of making coal water slurry is low, and it has been paid much attention by all countries in the world as oil generation fuel. The coal water slurry with
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Combustion of the coal-water slurry doped by combustible ...
The ignition parameters of the coal-water slurry droplets at the different methods of injection into the hot oxidant flow App. Therm. Eng., 107 ( 2016 ), pp. 10 - 20 Article Download PDF View Record in Scopus Google Scholar
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Environmental Assessment of a Coal/Water Slurry Fired ...
----- EPA-600/7-86-012a April 1986 ENVIRONMENTAL ASSESSMENT OF A COAL/WATER SLURRY FIRED INDUSTRIAL BOILER Volume I Technical Results By D. Van Buren and L. R. Waterland Acurex Corporation Energy & Environmental Division 555 Clyde Avenue P.O. Box 7555 Mountain View, California 94039 EPA Contract No. 68-02-3188 EPA Project Officer: J. A. McSorley Air and Energy …
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The ignition parameters of the coal-water slurry droplets ...
Coal-water slurry (CWS) is the composite slurry fuel that has two main components – coal (or wastes of coal processing) and water. The perspective kind of the composite liquid fuel is coal-water slurry containing petrochemicals (CWSP) with main components such as water, coal (or coal processing wastes) and flammable liquid.
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Method of pumping coal slurries - COWPER; NORMAN T.
The use of lump coal in a coal/water slurry proved to be feasible but was found to require high pumping power and resulted in excessive wear of the pipeline. U.S. Pat. Nos. 2791471, 3073652 and 4685840 provide good examples of prior art coal/water slurry transport.
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Apparatus and method for pumping hot, erosive slurry of ...
@article{osti_6476338, title = {Apparatus and method for pumping hot, erosive slurry of coal solids in coal derived, water immiscible liquid}, author = {Ackerman, C D}, abstractNote = {An apparatus for and method of pumping hot, erosive slurry of coal solids in a coal derived, water immiscible liquid to higher pressure involves the use of a motive fluid which is miscible with the liquid of the ...
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Gasification of Coal Water Slurry
The coal-water slurry is pumped through an externally heated, coiled, metallic tube and flashed into a suspension of coal particles in steam. A rapid increase in the velocity of this suspension causes some size degradation and considerable turbulence, both …
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(PDF) Development of Coal-Water Slurry Technology | Junye ...
Full PDF Package. This paper. A short summary of this paper. 21 Full PDFs related to this paper. Read Paper. PDF. Download Full PDF Package. Translate PDF. . o o 21 2 V l 21 N . r CO A I C () N V E R S I () N AP 1 998 19 98 4 2, 3, 4, " …
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The effect of inorganic salt in wastewater on the ...
The preparation of coal water slurry (CWS) using wastewater, which contains inorganic and organic components, is one method of wastewater utilization. In this study, the effect of inorganic salts on the viscosity of CWS was examined. The results show that monovalent salts (NaCl, KCl) decreased the v …
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SLURRY - NASA
The elements of the slurry pun~ping system which are incorp~rated in the HYGAS Pilot Plant are shown in Figure 1. Initial heat balance considerations for the HYGAS slurry feed system indicated there was insufficient sensible heat in the reactor itself to evaporate a water slurry acd prepare a dry coal feed.
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Method for preparing coal-water slurry - Nippon Oil and ...
3. A method for preparing a coal-water slurry as in claim 2, wherein the dispersing agent additionally comprises an alkaline substance. 4. A method for preparing a coal-water slurry as in claim 2, wherein the dispersing agent is a surface active agent, and the amount thereof added is from 0.05 to 3% by weight based on the amount of coal in the ...
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Method of burning lightly loaded coal-water slurries ...
@article{osti_5898621, title = {Method of burning lightly loaded coal-water slurries}, author = {Krishna, C R}, abstractNote = {In a preferred arrangement of the method of the invention, a lightly loaded coal-water slurry, containing in the range of approximately 40% to 52% + 2% by weight coal, is atomized to strip water from coal particles in the mixture.
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Coal slurry - Wikipedia
Ideally, coal slurry consists only of crushed coal and water, which can be efficiently separated. In practice, the separation is significantly costly due to the large amounts of water needed and wastewater generated by the process. Furthermore, the slurry consists also of very fine coal dust that results in a waste called blackwater.As blackwater cannot be purified by a water treatment plant ...
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Studies On Low Rank Coal Char Slurryability Experiment And ...
Coal water slurry is a new type of clean coal technology, it is a liquid fuelmade of coal, water and additive. The advantages of coal water slurry are highefficiency and less pollution, it can be like oil efficient and safe storage,transportation, pumping atomization and combustion. Coal water slurrytechnology effectively solves Chinese energy ...
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coal slurry | fuel | Britannica
In coal mining: Slurry pipelines. Coal slurry is a mixture of crushed coal and a liquid such as water or oil. The traditional mixture, first patented in England in 1891, consists of 50 percent coal and 50 percent water by weight. So-called heavy coal slurries or slurry fuels consist of…. Read More.
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Continuous method of cleaning a slurry of crushed raw coal ...
A single stage or multi-stage coal washing plant comprises a plurality of bunched cyclones supplied with raw crushed coal water slurry at high solids content and high velocity common from a tank through a distributor line that contains an equalizer for supplying equal quantities of solids to each cyclone through an inlet pipe having a critically dimensioned deflector that assists in ...
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The formulation and combustion characteristics of coal ...
@article{osti_41607, title = {The formulation and combustion characteristics of coal-water slurry fuels from impounded coal fines}, author = {Miller, S F and Morrison, J L and Scaroni, A W}, abstractNote = {The current political and economic climates mandate greater efficiency in energy production and use. One area of waste in coal processing involves the production and impoundment …
ادامه مطلبClean Energy and Water Technologies: coal-water-slurry
The coal-water-slurry fluid has a property similar to a Hydrocarbon as shown below. Density 65-70%,Viscosity 1000Cp, Size d 50 microns, Ash content 7, Sulfur0.5%. It is easier to handle a liquid than solid coal. Pulverised coal is pneumatically conveyed and fired in rotary cement kilns for so many years. There is nothing new about it.
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US4416666A - Coal-water slurry and method for its ...
A deashed coal-water slurry and process for preparing the same containing 65-85 percent of solids and 0.01-2.4 weight percent of dispersing agent. The slurry is comprised of a coal compact whose coal particles have a particle size distribution in substantial accordance with a specified formula. The coal-water slurry has a relatively low viscosity of less than 4,000 centipoise at a 75 percent ...
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What Is a Coal Slurry? (with pictures)
Coal slurry is a waste product of coal mining and processing, and contains both liquid and solid constituents. Particles of coal, water and chemicals used to prepare coal for market make up the slurry. Suitable methods of processing coal slurry for reuse or return to the environment have not been implemented, so the waste is held in storage in ...
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Method for modifying slurry of coal and/or iron ore ...
CN-103392015-A chemical patent summary. Patent: CN-103392015-A: Inventor: HIRAO TAKANORI. ISHITSUKA Kaoru. Assignee: KURITA WATER IND LTD
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Regression methodology for pH analysis of coal water ...
Indian Journal of Chemical Technology Vol. 20, September 2013, pp. 346-352 Regression methodology for pH analysis of coal water slurry in agitated vessel used in coal gasification C M Raguraman1,*, A Ragupathy1 & L Sivakumar2 1Department of Mechanical Engineering, Annamalai University, Annamalai Nagar 608 002, India 2Sri Krishna College of Engineering and Technology, Coimbatore 641 008, India
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Literature Review on Study of Coal Slurry Fuel Combustion ...
to study coal slurry behaviour on the fluidised bed. Similar to it is the next method of mixture droplet on hot surface. The purpose of both the methods is same to study rheological behaviour of coal mixture A. Combustion of coal–water suspensions – (a) Combustion technologies used is coal–water suspensions in
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Study on Preparation and Stability of Coal Water Slurry ...
The preparation of coal water slurry (CWS) as a new substitute for oil and the factors affecting the stability of CWS were studied in this paper. Dry method was used to prepare CWS. Dry coal water slurry refers to the preparation of CWS by grinding coal into powder, then adding water and additives, mixing and stirring.
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Properties of sodium lignosulfonate as dispersant of coal ...
A typical coal water slurry (CWS) consists of 60–75% coal, 25–40% water and about 1% chemical dispersants. It is desirable that the coal water slurry has high coal solids content and a low ...
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Slurryability and flowability of coal water slurry: Effect ...
The utilization of coal in the form of coal water slurry is a better and efficient method to control the harmful pollutants viz. NOx and SOx. Coal water slurry is a complex, high energy density, multiphase fuel. The rheological characteristics of the coal water slurry are …
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Global Coal Water Slurry Consumption Market Size And ...
Global Coal Water Slurry Consumption Market: Research Methodology The research methodology is a combination of primary research secondary research and expert panel reviews. Secondary research includes sources such as press releases company annual reports and research papers related to …
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