lignite coal water slurry pdf in Mexico

Adsorption of ammonia nitrogen on lignite and its influence …

This study aimed to increase the ammonium nitrogen adsorption capacity of lignite using ultrafine grinding, aiming to reduce eutrophication in water bodies. …

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Study of making coal water slurry with lignite Pendopo coal …

The Coal Water Slurry (CWS) technology increases the calorific value and changes the phase of coal from solid to liquid. The CWS Plant with a coal capacity of 1.4 t/hour located at Karawang, West ...

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Primary reactions of lignite-water slurry gasification under …

Firstly, the lignite-water slurry with additive was filled up into the reactor. The reactor was pressurised. Then an additional portion of water was pumped by pump (3) through electrolyzer (7) into the reactor (6) to provide the supercritical pressure by water (≥22.1 MPa).The working pressure was kept up forced at the level of 24 ± 0.1 MPa.. …

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[PDF] Hydrothermal treatment of the blend of lignite and …

This study mixed direct coal liquefaction residue (DCLR) with lignite to prepare mixed slurry and used DCLR as a microwave absorber to enhance lignite pyrolysis. Discussed …

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Roles of inherent mineral matters for lignite water slurry electrolysis

And coal is often used as a carbon source for assisting water electrolysis since it is widely available and affordable. Meanwhile, coal water slurry (CWS) electrolysis on anode can also remove parts of the inherent mineral matters and sulfur [5], purifying coal for subsequent conversion, such as combustion, coking, and gasification.

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Mechanistic insight into the adsorption and interaction of lignite …

It is found from molecular dynamics (MD) simulation that the polar ethoxy groups of the surfactant touch the lignite surface, and the nonpolar groups (alkyl chains) entwine closely with each other, forming a protective layer, which keeps water away from the surface of the lignite. The mobility of water molecules is higher in the lignite ...

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Adsorption of ammonia nitrogen on lignite and its influence on coal

A lignite was obtained from Xilin Gol, Inner Mongolia, China. Table 1 shows its properties, in which the subscript index "ad" indicates that the parameter was tested under air-dried basis, and "daf" that it was tested under dried and ash-free basis. The lignite was first crushed to particles <3 mm and subsequently dried at a temperature of …

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Study of making coal water slurry with lignite Pendopo coal

[7] Yuchi W, Li B, Li W and Chen H 2005 Effects of coal characteristics on the properties of coal water slurry Coal Prep. 25 239-49. Google Scholar [8] Das D, Dash U, Meher J and Misra P K 2013 Improving stability of concentrated coal–water slurry using mixture of a natural and synthetic surfactants Fuel Process. Technol. 113 41-51

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Preparation of high concentration coal water slurry of lignite …

And it is mainly affected by the physical and chemical properties of coal particles [12], including coal rank, porosity, ash content, etc. Additionally, the particle diameter distribution [13], [14], [15], the type and content of dispersant [16], [17] and temperature [18] are also causes affecting the viscosity of coal water slurry.

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Preparation of high concentration coal water slurry of lignite …

DOI: 10.1016/J.FUEL.2019.01.007 Corpus ID: 104426169; Preparation of high concentration coal water slurry of lignite based on surface modification using the second fluid and the second particle

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Natural Dispersant in Coal Water Slurry Stabilization

Efficiency of better fuel depends upon viscosity as per the van der Waals forces which shows coal conglomeration of particles (Das et al. 2020a, b, c, Meher et al. 2019).Flow behaviour of coal water slurry to the maximum 1000 mPas is essential for pipeline transport (Mishra and Kanungo 2000).Stability is also another factor responsible …

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Adsorption of ammonia nitrogen on lignite and its influence …

Using lignite as an adsorbent and subsequently as a material for coal water slurry (CWS) preparation represents an alternative method for coal chemical …

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Effect of Hydrothermal Dehydration on the Slurry Ability of Lignite

1. Introduction. The proven reserves of lignite, about 130 billion tons, account for about 13% of the total coal in China. 1,2 The clean and efficient utilization of lignite has attracted significant attention to meet the energy demand and achieve targeted emission reduction. However, due to the short formation time and low-grade …

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Green strategies in formulating, stabilizing and pipeline

Coal water slurry (CWS) Slurry is the blending of solid and liquid in an approximately equiva- lent ratio, its physical characteristics being dependent on factors like the

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Physicochemical properties and slurry ability changes of lignite …

Request PDF | Physicochemical properties and slurry ability changes of lignite after microwave upgrade with the assist of lignite semi-coke | Microwave pyrolysis is a promising technique for the ...

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Effects of hydrothermal dewatering of lignite on rheology of coal water …

The rheological studies have shown that coal water slurries made with lignite samples after hydrothermal dewatering (HTD) exhibit a stronger shear thinning behaviour as compared with those made with raw lignite samples. The viscosity of coal water slurry at the shear rate of 100 s −1 decreases with an increasing HTD temperature, which is ...

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Synthesis of a novel dispersant with topological structure by …

The lignite coal water slurries (CWSs) prepared from the block copolymer tri-P(St 50-s-SSNa 50) 10K-b-PPEGMA 10K exhibit a remarkably low apparent viscosity of 395 mPa·s and excellent static stability when the coal content is at 55 wt% and dispersant content is at 0.5 wt%. Moreover, these CWSs can achieve a maximum pulping …

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Preparation of high concentration coal water slurry with …

DOI: 10.1016/j.fuel.2022.123461 Corpus ID: 246685204; Preparation of high concentration coal water slurry with good fluidity based on only modified fine particles under bimodal distribution using the second fluid and the second particle

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Applied Sciences | Free Full-Text | Potential of Coal–Water …

Coal–water slurry or coal–water mixture (CWS or CWM) is a complex solid–liquid dispersion. Several research works have been done concerning the production and use of CWSs being developed worldwide in several different governmental, industrial and academic facilities. In the present paper, studies on the developments achieved in …

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Study of making coal water slurry with lignite Pendopo coal

The Coal Water Slurry (CWS) technology increases the calorific value and changes the phase of coal from solid to liquid. The CWS Plant with a coal capacity of …

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Preparation of high concentration coal water slurry of lignite …

The high solid content and low viscosity of coal water slurry are vital for the stable operation of the entrained flow gasifier. Preparing high concentration coal water …

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Properties of direct coal liquefaction residue water slurry: …

DOI: 10.1016/J.FUEL.2016.03.081 Corpus ID: 100931259; Properties of direct coal liquefaction residue water slurry: Effect of treatment by low temperature pyrolysis @article{Lv2016PropertiesOD, title={Properties of direct coal liquefaction residue water slurry: Effect of treatment by low temperature pyrolysis}, author={Dongmei Lv and …

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Roles of inherent mineral matters for lignite water slurry …

To understand roles of inherent mineral matters in lignite water slurry (LWS) electrolysis, lignite and demineralized lignite electrolyses were carried out in H2SO4 system. The results showed that cell voltage for LWS electrolysis was lower than that for demineralized lignite water slurry (DLWS) under …

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[PDF] Hydrothermal treatment of the blend of lignite and …

DOI: 10.1016/J.FUPROC.2017.01.003 Corpus ID: 99146214; Hydrothermal treatment of the blend of lignite and rapid hydrogasification char for preparing slurry fuels @article{Wei2017HydrothermalTO, title={Hydrothermal treatment of the blend of lignite and rapid hydrogasification char for preparing slurry fuels}, author={Yan Wei and Jie Wang}, …

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Fabrication and evaluation of novel amphiphilic star block …

DOI: 10.1016/j.powtec.2023.119117 Corpus ID: 265029403; Fabrication and evaluation of novel amphiphilic star block copolymers for increasing free water content in lignite to make coal water slurries

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(PDF) Slurryability and Flowability of Coal Water Slurry: …

As a part of clean coal technology, the coal water slurry has a popular application in the conventional and new thermal power stations. The hydrotransport is now-a-days a preferred method, due to ...

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The influence of water occurrences in CWSs made of lignite …

In some projects [1, 4] for industrial use of CWS (coal-water suspensions), authors focus on coal-water slurries prepared from high-quality low-ash coals, in particular, bituminous coals, with ...

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Improve the slurry ability of lignite through co-slurrying and

Compared with the raw coal and coal sample directly swollen from raw coal, the yield of pyrolysis tar for the coal samples of the combined process at 250 °C reached 10.89%, increased by 47.56% ...

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Slurry-ability mathematical modeling of microwave-modified lignite…

Therefore, the development of clean coal technology is a strategic need for China's energy development. Coal water slurry (CWS), a clean coal technology, is a coal-based liquid fuel that emerged from the oil crisis in the 1970s. It is solid-liquid mixture of 60–75 wt% coal powder, 24–39 wt% water and about 1 wt% chemical additives [2,3].

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Primary reactions of lignite-water slurry gasification under …

Lignite-water suspension supercritical gasification was carried out in an electric field with an intensity of 0.5 V/cm in the presence of additives under the pressure of 24 MPa in two temperature ...

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