slag coal rheology
Flow properties and rheology of slag from coal ...
2010-7-1 · The flow properties and rheology (shear-thinning and the onset of yield stress) of the slag are central to determining the operating conditions. Insufficient operating temperatures can cause poor, viscous, slagging and erratic slag flow from the gasifier, whereas excessive operating temperatures can result in rapid refractory wear [11] .
Read More
Flow properties and rheology of slag from coal ...
The high-temperature rheology of bituminous coal slag in the reducing atmosphere was investigated in this study. The characteristics of slag sample were analyzed by multi-techniques.
Read More
Flow properties and rheology of slag from coal ...
Flow properties and rheology of slag from coal gasification. ... 1016/j.fuel.2009.07.013 Get rights and content. Abstract. We have studied the rheological characteristics of Texaco gasifier slag at high-temperature. Slag samples have been analyzed by X-ray fluorescence, X-ray diffraction, and scanning electron microscopy. ... Rheology. Gasifier ...
Read More
Rheological Investigation of Coal Ash :: Anton-Paar
Slag built up around the burner regions interferes with the coal and air flow [2]. Knowledge about rheology, such as melting and flow properties of the coal ash slag can help to sustain stable operation of the boiler by draining the slag out of the system.
Read More
Rheological evolution and crystallization response of ...
Coal ash slag viscosity is critical for slag tapping in entrained-flow coal gasifiers, so the accurate prediction of slag viscosity and the critical temperature of viscosity (Tcv) will help the ...
Read More
Reaction, crystallization and element migration in coal ...
2017-3-1 · Besides the high thermal barrier inside slag layer caused heterogeneous temperature distribution and lead crystallization behavior to occur, which affected the slag viscosity and rheology. Molten coal slag was also a multi-component mixture, mainly containing aluminosilicates and silicates , .
Read More
Rheological evolution and crystallization response of ...
2013-2-5 · The evolution of the time dependence of rheological behaviors, including the viscosity and yield stress of the molten coal ash slag containing 0–35.51 vol % crystals at decreasing temperatures (1400–1280°C) and within 1.05 × 10 5 s, were investigated. Non-Newtonian behaviors, including shear thinning, become obvious with an increasing ...
Read More
Local structure of a lignitic coal ash slag and its effect ...
1993-11-1 · This article is cited by 21 publications. Xiongchao Lin, Keiko Ideta, Jin Miyawaki, Hiromichi Takebe, Seong-Ho Yoon, and Isao Mochida .
Read More
Effect of fly ash microsphere on the rheology and ...
2018-7-1 · Fig. 2 shows the particle size distribution (PSD) analysis of the slag, fly ash and FAM as determined by laser diffraction based on the assumption that all particles are spherical. The slag is comparable in size to the fly ash, while the FAM is markedly finer than them. The mean particle sizes (D 50) of the slag, fly ash and FAM are 13.79 μm, 14.20 μm and 1.89 μm,
Read More
Viscosity and Structural State of Iron in Coal Ash Slags ...
1995-5-1 · This article is cited by 30 publications. Tao Xu, Sankar Bhattacharya. Mineral Transformation and Morphological Change during Pyrolysis and Gasification of Victorian Brown Coals in an Entrained Flow Reactor.
Read More
A new rheometer for direct measurement of the flow ...
The high-temperature rheology of bituminous coal slag in the reducing atmosphere was investigated in this study. The characteristics of slag sample were analyzed by multi-techniques.
Read More
Rheological evolution and crystallization response of ...
Coal ash slag viscosity is critical for slag tapping in entrained-flow coal gasifiers, so the accurate prediction of slag viscosity and the critical temperature of viscosity (Tcv) will help the ...
Read More
Rheological evolution and crystallization response of ...
2013-2-5 · The evolution of the time dependence of rheological behaviors, including the viscosity and yield stress of the molten coal ash slag containing 0–35.51 vol % crystals at decreasing temperatures (1400–1280°C) and within 1.05 × 10 5 s, were investigated. Non-Newtonian behaviors, including shear thinning, become obvious with an increasing ...
Read More
Rheological evolution and crystallization response of ...
2013-2-5 · The evolution of the time dependence of rheological behaviors, including the viscosity and yield stress of the molten coal ash slag containing 0–35.51 vol % crystals at decreasing temperatures (1400–1280°C) and within 1.05 × 10 5 s, were investigated. Non-Newtonian behaviors, including shear thinning, become obvious with an increasing ...
Read More
(PDF) Rheology of Alkali-Activated Mortars: Influence of ...
Thus, the determining role of sodium silicate in the rheology of these activated slag systems is clear. AAM mortars and concrete rheology research is even scarcer where, in addition to the precursor and alkaline activator, consideration must be given to the presence of sand and aggregate morphology and inter-particle friction, as well as the ...
Read More
Local structure of a lignitic coal ash slag and its effect ...
1993-11-1 · This article is cited by 21 publications. Xiongchao Lin, Keiko Ideta, Jin Miyawaki, Hiromichi Takebe, Seong-Ho Yoon, and Isao Mochida .
Read More
Rheology: High-temperature rheology at up to 1800 °C ...
High-temperature rheology at up to 1800 °C. Temperature has the biggest influence on viscosity. At a certain temperature, also materials like slag (including coal ash), metals, and glass become liquid and can be processed as such. Viscosity measurements of these materials provide significant data to optimize energy-intensive production processes.
Read More
Viscosity and Structural State of Iron in Coal Ash Slags ...
1995-5-1 · This article is cited by 30 publications. Tao Xu, Sankar Bhattacharya. Mineral Transformation and Morphological Change during Pyrolysis and Gasification of Victorian Brown Coals in an Entrained Flow Reactor.
Read More
Jianliang XU | East China University of Science
Coal char particles deposited on molten slag surface and continued to react with the gas near the gasifier wall slag surface in an entrained flow gasifier, which significantly affected the total ...
Read More
宋文佳-北京航空航天大学材料科学与工程学院
2022-2-8 · Wenjia Song*, et al. Flow properties and rheology of slag from coal gasification; Fuel; 2010, 89,1709-1715. 14. Wenjia Song*, et al. Prediction of chinese coal ash fusion temperatures in Ar and H 2 atmospheres; 2009, 23, 1990-1997.
Read More
Rheology and Viscosity Prediction of Bituminous Coal Slag ...
2022-1-17 · Rheology and Viscosity Prediction of Bituminous Coal Slag in Reducing Atmosphere.
Read More
Rheological evolution and crystallization response of ...
2013-2-5 · The evolution of the time dependence of rheological behaviors, including the viscosity and yield stress of the molten coal ash slag containing 0–35.51 vol % crystals at decreasing temperatures (1400–1280°C) and within 1.05 × 10 5 s, were investigated. Non-Newtonian behaviors, including shear thinning, become obvious with an increasing ...
Read More
(PDF) Rheology of Alkali-Activated Mortars: Influence of ...
Thus, the determining role of sodium silicate in the rheology of these activated slag systems is clear. AAM mortars and concrete rheology research is even scarcer where, in addition to the precursor and alkaline activator, consideration must be given to the presence of sand and aggregate morphology and inter-particle friction, as well as the ...
Read More
Rheology and alkali-silica reaction of alkali-activated ...
2021-6-2 · Fly ash microsphere (FAM) was a class of superfine spherical-shaped particles collected from the exhaust smoke of coal-fired power station by using the electrostatic adsorption classifier technology. The particle size distribution (PSD) of the slag, OPC and FAM were tested by the laser particle size analyzer, and the results are shown in figure 1.
Read More
Rheology: High-temperature rheology at up to 1800 °C ...
High-temperature rheology at up to 1800 °C. Temperature has the biggest influence on viscosity. At a certain temperature, also materials like slag (including coal ash), metals, and glass become liquid and can be processed as such. Viscosity measurements of these materials provide significant data to optimize energy-intensive production processes.
Read More
Co-slagging characteristics of coal and biomass ashes ...
2021-1-4 · This study systematically investigated the co-slagging characteristics of high-rank coal and biomass ashes considering entrained flow slagging gasifier. Despite favourable performance parameters, coal might not be feasible for entrained flow gasification because of not forming slag within the gasifier operating temperature (1200–1500 °C). To overcome this issue, co
Read More
A critical review of ash slagging mechanisms and viscosity ...
2020-4-26 · Gasification or combustion of coal and biomass is the most important form of power generation today. However, the use of coal/biomass at high temperatures has an inherent problem related to the ash generated. The formation of ash leads to a problematic phenomenon called slagging. Slagging is the accumulation of molten ash on the walls of the furnace,
Read More
添加剂对高碱煤灰渣流动特性及钠捕获效率的影响
SONG W J, TANG L H, ZHU X D, et al Flow properties and rheology of slag from coal gasification[J]. Fuel, 2010, 89 (7): 1709- 1715 doi: 10.1016/j.fuel.2009.07.013 2 SONG W J, SUN Y M, WU Y Q, et al Measurement and simulation of flow properties of coal 3
Read More
Rheology: High-temperature rheology at up to 1800 °C ...
High-temperature rheology at up to 1800 °C Temperature has the biggest influence on viscosity. At a certain temperature, also materials like slag (including coal ash), metals, and glass become liquid and can be processed as such.
Read More
2016year - East China University of Science and Technology
2020-7-15 · Effect of Cooling Process on the Generation and Growth of Crystals in Coal Slag Energy&Fuels 30(6) ： 5167-5173 12 Zhang, J.ab, Zhao, H.ab, Wang, C.ab, Li, W.ab, Xu, J.ab, Liu, H* Influence of Small Oxygen-Containing Organic Molecules on the Rheology of
Read More