This invention relates to the preparation of coal slurries for transportation through unprotected ferrous metal piping, and has particular reference to preparing the coal slurry for such transportation so as to preclude corrosion of the piping during such transportation.
Coal slurry is a mixture of solids (mined coal) and liquids (usually water) produced by a coal preparation plant. As a slurry, coal is separated from non-combustable components (ash) and can be fractionated by particle size as well.
Preparation of coal slurry All slurry samples were prepared according to the following scheme. The total weight of the slurry was approximately 150 g, and the amount of additive was 0.8 wt% of the dry coal …
liquid) or slurry (when pumping a slurry). The subscripts s and d are used to identify pipes, valves, gauges or physical conditions respectively at, or upstream of, pump suction flange and at, or …
1. IntroductionThe use of coal–water slurry (CWS) as a fuel is regarded as a technology by which favorable economics and short-term commercialization could be realized, in comparison with the gasification or liquefaction technologies of coal.
COAL BLURRY pH BTUDIEB Karl S. Vorres chemistry Div., Bldg. 211 Argonne National Laboratory Argonne, IL 60439 ABSTRACT Coal slurry pH values can be used to characterize coals. pH values depend on the coal, time since slurry preparation, contact with gas atmosphere, particle size, and stirring. Measured values reflect a sequence of reactions probably including: carbon dioxide …
A dilute coal/water slurry from Consol, Inc.`s Rend Lake Preparation Plant was concentrated with the process to a maximum recorded solids loading of 61.9% solids by weight. Analytical results from ...
This study aims to establish the theoretical basis for the coal slurry preparation technology of coking wastewater and sludge and subsequently provide references for the clean recycling of coking wastes. 2. Materials and methods2.1. Materials. Bituminous coal was selected for the present study. Before coal slurry preparation, bituminous coal was naturally dried, ground, and sieved into ...
A high price of traditional fuel (gas and heating oil) encourages to search for new cheaper fuel to reduce the cost of thermal energy. One of the most promising new products is coal water slurry fuel – a mixture of coal particles (fraction 1 … 70 μm), water and reagent.
Prior art keywords acid coal slurry coal 3n formula Prior art date 1982-09-29 Legal status (The legal status is an assumption and is not a legal conclusion.
The re-use of waste water from coal preparation plant tailings is always desirable, but is generally problematic in terms of solid-liquid separation. Dewatering and disposal of coal slurry at a high percentage of moisture
Coal sludge, also known as slurry, is the liquid coal waste produced by mining activities. After mining, coal is crushed and washed to remove the surrounding soil and rock. The washing process generates huge amounts of liquid waste, and the mining process itself produces millions of tons of solid
A coal preparation plant (CPP; also known as a coal handling and preparation plant (CHPP), coal handling plant, prep plant, tipple or wash plant) is a facility that washes coal of soil and rock, crushes it into graded sized chunks (sorting), stockpiles grades preparing it for transport to market, and more often than not, also loads coal into rail cars, barges, or ships.
Prior art keywords slurry coal transportation piping ferrous metal Prior art date 1940-09-24 Legal status (The legal status is an assumption and is not a legal conclusion.
Slurry Preparation Coal is assembled from a mine or group of mines at a single point where mixing, cleaning, DESCRIPTION or other beneficiation may take place, and where the slurry is prepared. Preparation begins with impact crushing followed by the addition of water and further grinding to a maximum particle size of one-eighth inch. More water is then added to form a mixture that is about 50 ...
Coal preparation. As explained above, during the formation of coal and subsequent geologic activities, a coal seam may acquire mineral matter, veins of clay, bands of rock, and igneous intrusions.
A pumpable slurry of pulverized coal in a coal-derived hydrocarbon oil carrier which slurry is useful as a low-ash, low-sulfur clean fuel, is produced from a high sulfur-containing coal. The initial pulverized coal is separated by gravity differentiation into (1) a high density refuse fraction
Coal preparation plant - Wikiped. A coal preparation plant (CPP; also known as a coal handling and preparation plant (CHPP), coal handling plant, prep plant, tipple or wash plant) is a facility that washes coal of soil and rock, crushes it into graded sized chunks (sorting), stockpiles grades preparing it for transport to market, and more often ...
For efficient coal–water slurry (CWS) gasification, it is very important to prepare CWS with higher carbon content and lower viscosity, which improve CWS heating values and atomization of CWS.
Preparation of coal slurries deposited in ground settling ponds ... Key words: Coal slurry, ground settling ponds, washing Introduction Coal slurries with a grain size below 1 mm are generated during the coal washing in coal preparation plants. They are separated during dewatering of coal washing products and then, after thickening, can be either the commercial produkt or go to ground settling ...
Preparation of Coal-Water Slurry and Power Units for Its Combustion Orig i nal sci en tific pap er UDC: 662.93/.94 The ar ti cle describes meth ods used to prepare coal-wa ter slurry, pres ents the results of com put er sim u la ti on and test com bus tion of coal- wa ter slur ry of dif fer ent com po s i ti on in burn ers of sev eral types. Coal- wa ter s lurry ( CWS) is a liq uid mi x ture ...
Coal slurry consists of solid and liquid product of a coal preparation plant. As a slurry, coal is separated from non-combustable components (ash) and can be fractionated by particle size as well.
Coal Mining and Preparation Mineral Industry Solutions. Coal Preparation Coal Preparation Circuit. . and produces less sludge than the addition of lime slurry which is commonly used on large AMD flows.
The present article describes a method of preparation coal-water slurry using a high speed mixer-disperser (HSMD).The method is based on the multiple impacts in a liquid media by dispersing ...
Coal-water slurry is prepared in a conventional slurry preparation unit at ambient conditions. It is It is pumped to the same pressure as that of the liquid CO
Initially, coal-slurry fuels were based on coal-oil mixtures, now the emphasis is largely on coal-water fuels. This review assesses the status of the relevant technology. It covers the preparation of coal-slurry fuels, slurry properties, combustion characteristics, emissions, current applications and concludes with their future outlook.
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