Coal water slurry cws is a novel coalbased fluid fuel, which is comprised of 65%70% pulverized coal, 30%35% water and 1%2% additive and physically processed. People compete with wildlife for food and resources, and have eradicated dangerous species. Coal water slurry cws is a novel coalbased fluid fuel, which is comprised of 65 %70% pulverized coal, 30%35% water and 1%2%. In this study, we investigate the effects of the proportion. Feb 2000 the centrifugal slurry pump must be designed to allow the passage of abrasive particles which can at time be extremely large. Coalwater slurry combustion in gas turbines journal of. Low solids coal water slurry cofiring for nox trim. We use your linkedin profile and activity data to personalize ads and to show you more relevant ads. The gasification properties of coaloilfield wastewaterslurry and coal water slurry were studied by using the thermogravimetry method, and the promoting effect of oilfield wastewater on gasification was also determined at the micro level. However, bulkhead failures could cause and have caused catastrophic flooding that puts the underground workforce at risk. The syngas produced from the gasifier is rich in co 33 % and h 2 49 % whereas the rest contains h 2 o, co 2, n 2. A phaseinversion based coal co 2 slurry piccos preparation was proposed to make a coal co 2 slurry botero et al. The omb coalwater slurry gasification technology is one of the three internationally recognized coal gasification technologies, ranking with those of shell and ge.
Apr 20, 2017 a coal slurry spill on march 23, 2017, leaked approximately 5,400 gallons of coal slurry into crooked run, a tributary of the coal river. The pipeline had three intermediate pumping stations. Coal water slurry as a substitute for fuel oil in india ijert. The first proposed project using wyoming coal and wyoming water was the etsi project. The static stability was getting better for css, compared to coal water slurry cws. Besides, because these functional groups are all hydrophilic, shangwan coal shows strong waterretaining capacity. A coal slurry spill on march 23, 2017, leaked approximately 5,400 gallons of coal slurry into crooked run, a tributary of the coal river. Suitable methods of processing coal slurry for reuse or return to the environment have not been. Development of coal gasification technology in china world. Penn state and doe have entered into a cooperative agreement to determine if cwsfs prepared from cleaned coal containing. Aqueous coal slurries comprising comminuted coal, water and sulfated oglycoside surfactant. Effects of coal characteristics on the properties of coal. The effects of coal characteristics on the properties of coal water slurry cws were systemically studied using sixteen chinese coals of different ranks from lignite to anthracite.
Proceedings of the 2002 international joint power generation conference. Lowviscosity reasonably stable slurries of coal water, coal jetfuel, and coal methanol have been formulated, and the first two types have. More than 7 billion tons of coal are mined per year 2010, using approximately 200 litres of water per ton. The coal loading was varied from 30% to 50% and both ionic sodium polystyrene sulphonate pss and nonionic triton x100 surfactants were employed as. The main components of coal water slurry are coal, water, and additives inputted in the coal milling process to create a liquid fuel with similar flow properties as oil. Rino you seem to have an almost uncanny grasp of the obvious. Pulverized coal can be mixed with water and made into a slurry, which can be handled like a liquid fuel and burned in a boiler designed to burn oil. The pennsylvania state university is conducting a coalwater slurry fuel cwsf program with the us department of energy doe and the commonwealth of pennsylvania to determine the viability of firing cwsf in an industrial boiler designed for heavy fuel oil. A phaseinversion based coalco 2 slurry piccos preparation was proposed to make a coalco 2 slurry botero et al.
The pennsylvania state university is conducting a coal water slurry fuel cwsf program with the us department of energy doe and the commonwealth of pennsylvania to determine the viability of firing cwsf in an industrial boiler designed for heavy fuel oil. Abstract due to the known abundance of fossil fuel resources in india, a deliberate mindset to change over to coal as the alternate supply is inevitable. Coalwater slurry presentation2 free download as powerpoint presentation. Biorefinery lignosulfonates as a dispersant for coal water. The sulfated oglycoside serves as a highly efficient dispersant for the coal particles, permitting the achievement of low viscosity slurries at low surfactant usage levels. The coal water slurry fuel was transported through a pipeline to novosibirskaya tec5, novosibirsk, a distance of 262 km 163 mi. Shangwan coal particles show electronegativity in the slurry, because there are many oxygenated functional groups, such as the carboxyl group, hydroxyl group, and carbonyl group on the surface and in the core of the particles. Utilization slurry coalwater fuel connecting repositories. Coalwater slurry fuel is a combustionable mixture of fine coal particles suspended in water. Click download or read online button to get fourth international symposium on coal slurry combustion book now.
Niosh, in collaboration with the mine safety and health administration, is conducting research to evaluate the adequacy of existing design practices for. Coal water slurry fuel cwsf or cws or cwf is a fuel which consists of fine coal particles suspended in water. Study on coal water slurries prepared from coal chemical. The coal water slurry is a substitutive fuel with immense potential application in industrial and steam power plant boilers with significant cost savings and ease of. Lowviscosity reasonably stable slurries of coalwater, coaljetfuel, and coalmethanol have been formulated, and the first two types have. Effects of metal ions in organic wastewater on coal water. Nov 18, 2009 we use your linkedin profile and activity data to personalize ads and to show you more relevant ads.
Summary based on the wender coal model, the processes of brown coal pyrolysis and coal. This is different than another slurry, coal water mixture cwm, a mixture of coal and water. Partitioning of productionbased food chain greenhouse gas emissions, excluding landuse change, for china and united kingdom. Coalwater slurry fuel was made in a ball mill which pulverised the coal or coal sludge. The first step in the process is the preparation of a coal water slurry under ambient conditions. Biorefinery lignosulfonates as a dispersant for coal water slurry. The operator of each coal site on which a water, coal slurry, or silt retaining dam or mine refuse pile impounding water is located shall submit a plan for carrying out the requirements of 45. The establishment of large coal water slurry gasification plants with a daily capacity of 3000 tons of coal is a prelude to a largerscale demonstration of coal gasification technology. Particles of coal, water and chemicals used to prepare coal for market make up the slurry. The coalwater slurry cws production with its future transportation and usage as energy fuel is one of the perspective ways of conversion of coal into a liquid. The rheological behavior of coal water slurry of indian coal is studied using rheometer. Study of pyrolysis of brown coal and gasification of coal.
Introduction energy development, as well as improving energy security of russia is largely dependent on extensive and effective use of coal as an energy fuel. The term liquid co 2 is used to refer to co 2 with a liquidlike density, even though the pressure may be above the. Coalwater slurry compositions download pdf info publication number us4597770a. Human interactions with wildlife are a defining experience of human existence. Coal water slurry humic acid dispersant atom transfer radical polymerization this work reports the synthesis and performance of a novel dispersant for coal water slurry cws.
The largest warman slurry pump, for example, can pump particles up to 530mm in spherical size. Coal water slurry was initially developed in russia about 80 years ago, and the technology was further refined in europe in 1950. According to this method, the coalco 2 slurry is prepared via a coalwater slurry. The coalwater slurry cws production with its future transportation and usage as energy fuel is one of the perspective ways of conversion of coal into a liquid state for ensuring ecological demands for toxic ejections during solid fuel combustion and also for fuel oil replacement in the industrial heat. Coal water slurry is simply produced by mixing pulverized coal with water together with a small amount of a surfactant and a stabilizing agent. Coal water slurry fuel cwsf or cws or cwf is a fuel which consists of fine coal particles suspended in. The estimated megatonnes of carbon dioxide equivalent for 2007.
This paper presents preliminary results of a program to investigate the key technologies for burning coal water slurries in gas turbines. Surface coating improves coalwater slurry formation of. Cws properties examined in this study included slurryability. Coal water slurry production lineromiter machinery youtube. Abstract the effects of coal characteristics on the properties of coal water slurry cws were systemically studied using sixteen chinese coals of different ranks from lignite to anthracite. It is pumped to the same pressure as that of the liquid co 2 stream available for slurry preparation. According to this method, the coal co 2 slurry is prepared via a coal water slurry. Coal water slurry currently refers to the coal based liquid fuel which reappeared in the 1970s when the world wide price of oil rose and the supply became scarce. It can be used to power boilers, gas turbines, diesel engines and heating and power stations. This paper presents preliminary results of a program to investigate the key technologies for burning coalwater slurries in gas turbines. Triplex synfuel containing gasoline, water and coal was prepared using nonionic surfactant. The slurrying properties of coal water slurries containing raw.
Abstractoilfield wastewater was used to prepare coal slurry, which is called coaloilfield wastewaterslurry. Coalwater slurry is prepared in a conventional slurry preparation unitat ambient conditions. The correlation between coal properties and cws characteristics were investigated by multivariate progressive regression analysis. One type of coal slurry, coal oil mixture com, is prepared by adding heavy oil to coal. Besides, because these functional groups are all hydrophilic, shangwan coal shows strong water retaining capacity. Results are given for slurry atomization and combustion testing and analyses performed at conditions typical for gas turbine applications.
The omb coalwater slurry gasification technology advantages include high carbon conversion rate, facilitation of largescale processing, and stable and safe operations. West virginia department of health and human resources. Coal slurry can be transferred by pipeline or with specialized pumps such as a progressive cavity pump to pump the highly abrasive, corrosive and viscous coal slurry. Of these alternatives, the use of the coal water slurry cws promised a combination of advantages. The ratio of water, gasoline and coal was optimized. The coal water slurry gasification combined with ammonia synthesis process produces various complex wastewaters that are difficult to handle, and the. The effect of particle size, solid concentration and temperature on rheology of the coal water slurry has. Of these alternatives, the use of the coalwater slurry cws promised a combination of advantages.
When in the pipeline, the slurry moved along at a leisurely four miles an hour. Coalwater slurry fuel cwsf normally consists of 5070 percent pulverized or micronized coal. The dispersant is derived from humic acid ha and has a topological structure, named humic acidgraftpolysodium styrene sulfonate hagpssna. The coalwater slurry fuel was transported through a pipeline to novosibirskaya tec5, novosibirsk, a distance of 262 km 163 mi. Penn state and doe have entered into a cooperative agreement to determine if cwsfs prepared from cleaned coal containing approximately 3. The following assumptions were applied throughout the analysis in this paper. A blocked watercoalslurry spray gun can be conveniently cleaned, so that the reliability of the watercoalslurry boiler is improved. Organic wastewater can be used to prepare coal water slurry cws for the resource utilization of organic wastewater. Slurry pumps therefore need much wider and heavier impellers to. Based on the wender coal model, the processes of brown coal pyrolysis and coal. Development of coal gasification technology in china.
Due to low oil prices and huge oil reserves led to a complete. This paper presented a method of a new kind of triplex mixture system of oilwatercoal slurry preparation. Jan 20, 2015 petroleum coke and lignite are two important fossil fuels that have not been widely used in china. The first proposed project using wyoming coaland wyoming waterwas the etsi project. Here, the effects of six metal ions in organic wastewater on the properties of cws and the interaction mechanism with a dispersant are studied. Coal slurry is a waste product of coal mining and processing, and contains both liquid and solid constituents. This site is like a library, use search box in the. A laminar flow reactor has been developed which gives a uniform temperature and oxidizer concentration to study the initial stages of combustion of coalwater. The optimum prescription of oilwatercoal slurry was obtained by means of orthogonal experiment. Unlike coal water slurry, however, coal co 2 slurry cannot be prepared at ambient pressure. Sedimentation in coalwater slurry pipelining fabio rosso dipartimento di matematica ulisse dini, university of firenze, italy this work was partially supported by the c.
Fourth international symposium on coal slurry combustion. Shangwan coal is a lowrank coal from inner mongolia. By royal daniel and kasem naknual power engineers asia. Water and slurry bulkheads in underground coal mines. Improving slurryability, rheology, and stability of slurry fuel from blending petroleum coke with lignite. Coal water slurry carbon slurry fuel cws cws is a mixture of finely milled coal or other carbonaceous materials with water or an aqueous emulsion. The coal particle diameters used are generally about 100. While com is convenient for burning and while it was tested before cwm. Coal water slurry as a substitute for fuel oil in india. Past, present, and future research has enhanced, and continues to enhance, industrial application of coal gasification technology in china. The effect of coal rank on pulverized coal and coalwater slurry combustion was examined in a laboratory laminar flow reactor. This early researcher, rudolph diesel, originally wanted his engine to run on coal dust.
Influence of different dispersants on rheological behaviors of coal water slurry prepared from a low quality coal. Cn102980188b watercoalslurry spray gun and watercoal. Synthesis of a novel dispersant with topological structure by. Coal water slurry production line is for making coal water slurry from coal. Sensitivity and safety boundary analysis of opposed multi. Emission control in the combustion of coalwater and organic coal. Google patents watercoalslurry spray gun and watercoalslurry boiler download pdf info publication number. Nov 14, 2014 coal would be crushed, then mixed with water to create a slurry and sent via pipeline to its destination, where the mixture was dried, then burned.
New water, coal slurry, or silt retaining dams, or mine refuse piles impounding water, or the modification of existing water, coal slurry, or silt retaining dams or mine refuse piles impounding water shall be designed and constructed by, or under the direction of, a licensed professional engineer, if such retaining dam or refuse pile. The components in organic wastewater are highly complex, and some of their substances can influence the properties of cws. Petroleum cokelignite slurry pcls, a mixture of petroleum coke, lignite, water, and additives, efficiently utilizes the two materials. Coalwater mixtures simply do not want to ignite, very well. Penconsulting promotes coal water slurry application to fuel power generation penconsulting has engaged in studies for the commercial application of coal water slurry cws to provide clean coal based fuel for industrial boilers and steam turbine power plants in indonesia, utilizing indonesia produced coal. Gasification property of coaloilfield wastewaterslurry. Media in category coal water slurry fuel the following 5 files are in this category, out of 5 total. Characterization of coal water slurry prepared for prb coal. Coal would be crushed, then mixed with water to create a slurry and sent via pipeline to its destination, where the mixture was dried, then burned.
Coal water slurry fuel was made in a ball mill which pulverised the coal or coal sludge. The effect of coal properties on the viscosity of coal. Coalwater slurry fuel is a combustible mixture of fine coal particles suspended in water. Pdf influence of different dispersants on rheological.
Life cycle cost analysis of coal water slurry process in indonesia proceedings of academics world 51st international conference, bangkok, thailand, 16th17th november 2016, isbn. Jun 20, 2014 coal water slurry production line is for making coal water slurry from coal. View enhanced pdf access article on wiley online library html view download pdf for offline viewing. The experimental results substantiated the use of cwf and ocwf slurries for emission control in coalburning power engineering. Coalwaterslurries an overview sciencedirect topics. Synthesis of a novel dispersant with topological structure. The first step in the process is the preparation of a coalwater slurry under ambient conditions. Coal slurry with 30 % water content is fed to an entrained flow gasifier operating at a temperature and pressure of 1600c and 32 bar respectively. Improving slurryability, rheology, and stability of slurry. Pdf coal water slurry in energy sector researchgate.
107 239 685 589 244 858 1038 717 326 942 676 685 795 704 313 566 1130 186 539 1479 275 358 547 1445 604 643 578 562 309 346 269