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pulverized coal combustion characteristics of high

pulverized coal combustion characteristics of high

Pulverized coal combustion characteristics of high-fuel ...

2004-9-1 · The pulverized coal combustion characteristics of high-fuel-ratio coals were experimentally investigated in a test furnace with a coal combustion capacity of approximately 100 kg/h. Three-dimensional numerical simulations are also performed under identical conditions to the experimental ones to study its application for the high-fuel-ratio ...

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Pulverized coal combustion characteristics of high-fuel ...

In this study, pulverized coal combustion characteristics of high-fuel-ratio coals are experimentally investigated using an approximately 100 kg-coal/h pulverized coal combustion test furnace. The combustion characteristics are compared to those for bituminous coal. The coals tested are six kinds of coal with fuel ratios ranging from 1.46 to 7.10.

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Pulverized coal combustion characteristics of high-fuel ...

In this study, pulverized coal combustion characteristics of high-fuel-ratio coals are experimentally investigated using an approximately 100 kg-coal/h pulverized coal combustion test furnace. The ...

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Combustion characteristics of high ash coal in a ...

2001-8-1 · Abstract. The influences of ash content on pulverized coal combustion characteristics are experimentally and numerically studied under a staged combustion condition. The stage combustion ratio (the ratio of air volume of the staged combustion air to the total air) is 0 or 30%, and the coals tested are the three high ash coals with different ash ...

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Combustion characteristics of high ash coal in a ...

The influences of ash content on pulverized coal combustion characteristics are experimentally and numerically studied under a staged combustion condition. The stage combustion ratio (the ratio of ...

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Experimental study on combustion characteristics of ...

2018-4-1 · The most widely-used method is the pulverized coal-fired (PC) boiler, owing to its high combustion efficiency, low energy consumption and easy enlargement . However, the PC boiler is limited by considerable NO x emission due to its high combustion temperature, even though a number of low‑nitrogen combustion technologies have been applied [3 ...

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Study on Combustion Characteristics of Pulverized Coal ...

Combustion characteristics of three Chinese pulverized coals, Shenmu bituminous coal, Tianhushan anthracite and Duolun lignite, under the high oxygen concentration upper the 21%, have been investigated using TG/DSC.

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(PDF) Prediction of High-Intensity Pulverized Coal

The overall characteristics of high-intensity pulverized coal combustion have been predicted by a one-dimensional model. The mixing of the primary stream of pulverized coal and transport air with ...

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A study of combustion characteristics of pulverized coal ...

2021-11-15 · According to the study of Zou et al. [6], heating rate can improve combustion performance of pulverized coal. If heat is so high that the enclosed particles are

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Air-Staged Combustion Characteristics of Pulverized Coal ...

2019-5-25 · It is of great importance to clarify the effect of the combustion temperature in actual boilers on air-staging combustion of coals. In this work, a novel vertical tandem-type drop-tube furnace system was set up, in which a temperature of as high as 1600 °C can be achieved. Experimental investigations were performed thoroughly with particular attention to NOx formation and unburned carbon in ash.

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(PDF) Prediction of High-Intensity Pulverized Coal

The overall characteristics of high-intensity pulverized coal combustion have been predicted by a one-dimensional model. The mixing of the primary stream of pulverized coal and transport air with ...

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High Temperature Materials and Processes

[12]. He etal. [13] studied combustion characteristics and reactivity of blast furnace pulverized coal through ther-mogravimetric analysis method and came up with opti-mal proposal for Pansteel ...

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Air-Staged Combustion Characteristics of Pulverized Coal ...

2019-5-25 · It is of great importance to clarify the effect of the combustion temperature in actual boilers on air-staging combustion of coals. In this work, a novel vertical tandem-type drop-tube furnace system was set up, in which a temperature of as high as 1600 °C can be achieved. Experimental investigations were performed thoroughly with particular attention to NOx formation and unburned carbon in ash.

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Combustion Characteristics of Pulverized Coal and Air/Gas ...

2008-12-29 · An experimental work was performed to investigate the co-firing of pulverized coal and premixed gas/air streams in a double swirl combustor. The results showed that the NOx emissions are affected by the relative rates of thermal NOx formation and destruction via the pyrolysis of the fuel-N species in high temperature fuel-rich zones. Various burner designs were tested in order to vary the ...

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Combustion characteristics of unburned pulverized coal

2018-7-17 · The combustion characteristics of two kinds of unburned pulverized coal (UPC) made from bituminous coal and anthracite were investigated by thermogravimetric analysis under air. The reaction kinetics mechanisms between UPC and CO 2 in an isothermal experiment in the temperature range 1000-1100℃ were investigated. The combustion performance of unburned pulverized coal made from

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Oxy-Fuel Combustion Characteristics of Pulverized Coal in ...

2020-1-10 · A high time-averaged CO2 concentration of 81.5% by volume is achieved in the dry flue gas. In this test facility, compared to air-fuel combustion, the averaged burnout rate of pulverized coal slightly increases (∼97%) despite the decrease in flame temperature.

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Characteristics of Preheating Combustion of Power Coal ...

2020-12-2 · Yankuang coal with the high coking property is difficult to use through direct combustion. The main purpose of this paper is to study the combustion characteristics and NO x emissions of this type of coal using preheating combustion technology. The experimental results show that after the pulverized coal is preheated, the char residue characteristic is significantly reduced from 5 to 1.

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Oxy-Fuel Combustion Characteristics of Pulverized Coal ...

Oxy-fuel combustion is an effective technology for carbon capture and storage (CCS). Oxy-combustion for coal-fired power stations is a promising technology by which to diminish CO2 emissions. Unfortunately, little attention has been paid to the oxy-combustion characteristics affected by the combustion atmosphere. This paper is aimed at investigating the oxy-fuel combustion characteristics

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Effect of H2O on the combustion characteristics of ...

The effect of particle size and heating rate on the pulverized coal combustion was also studied under high-H2O-concentration oxy-fuel atmosphere. The results showed that the presence of H2O strongly affects the combustion characteristics of coal and coal char in O2/CO2 atmosphere, leading to a greater ignition delay, faster burnout and higher comprehensive reactivity.

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张海-上海交通大学机械与动力工程学院 - SJTU

NOx emission characteristics of superfine pulverized anthracite coal in air-staged combustion. Energy Conversion and Management 2013; 74: 454-461. 23.Jun Shen, Jiaxun Liu, Yanfeng Xing, Hai Zhang, Lei Luo, Xiumin Jiang.

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Fundamental Reaction Characteristics of Pulverized Coal

teristics of coal reaction at high temperature, the evolution rate of the volatile matter, conversion of the fixed carbon, detail reaction behaviors and the like. Many studies on pulverized coal combustion/gasification have already been reported by a number of researchers. Young and Niksa1) studied the combustion rates for selected low-rank ...

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High Temperature Materials and Processes

[12]. He etal. [13] studied combustion characteristics and reactivity of blast furnace pulverized coal through ther-mogravimetric analysis method and came up with opti-mal proposal for Pansteel ...

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Combustion Characteristics of Pulverized Coal and Air/Gas ...

2008-12-29 · An experimental work was performed to investigate the co-firing of pulverized coal and premixed gas/air streams in a double swirl combustor. The results showed that the NOx emissions are affected by the relative rates of thermal NOx formation and destruction via the pyrolysis of the fuel-N species in high temperature fuel-rich zones. Various burner designs were tested in order to vary the ...

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Combustion characteristics of unburned pulverized coal

2018-7-17 · The combustion characteristics of two kinds of unburned pulverized coal (UPC) made from bituminous coal and anthracite were investigated by thermogravimetric analysis under air. The reaction kinetics mechanisms between UPC and CO 2 in an isothermal experiment in the temperature range 1000-1100℃ were investigated. The combustion performance of unburned pulverized coal made from

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Performance of Pulverized Coal Combustion under High ...

2014-3-25 · The high temperature air combustion (HiTAC) is an advanced promising technology for heat recovery, energy saving, and stability improvement of flame. Computational fluid dynamic (CFD) is known as an applied tool to execute HiTAC modeling. In this paper, performances of pulverized coal combustion under the high preheated and oxygen deficient air are studied by both experimental and numerical ...

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Oxy-Fuel Combustion Characteristics of Pulverized Coal in ...

2020-1-10 · A high time-averaged CO2 concentration of 81.5% by volume is achieved in the dry flue gas. In this test facility, compared to air-fuel combustion, the averaged burnout rate of pulverized coal slightly increases (∼97%) despite the decrease in flame temperature.

Read More
Oxy-Fuel Combustion Characteristics of Pulverized Coal ...

Oxy-fuel combustion is an effective technology for carbon capture and storage (CCS). Oxy-combustion for coal-fired power stations is a promising technology by which to diminish CO2 emissions. Unfortunately, little attention has been paid to the oxy-combustion characteristics affected by the combustion atmosphere. This paper is aimed at investigating the oxy-fuel combustion characteristics

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欧阳子区-中国科学院大学-UCAS

(26) Numerical simulation on pulverized coal combustion and NOX emissions in high temperature air from circulating fluidized bed, Journal of Thermal Science, 2013, 第 1 作者 (27) Particle Characteristics of Anthracite Powder Preheated Quickly in Circulating Fluidized Bed, International Conference on Materials for Renewable Energy& Environment 2013, 2013, 第 1 作者

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黄骞-清华大学能源与动力工程系

2021-11-1 · [9] Huang Q, Li S Q, Li G, Yao Q. Mechanisms on the size partitioning of sodium in particulate matter from pulverized coal combustion. Combustion and Flame, 2017, 182: 313-323. [10] Huang Q, Zhang Y Y, Li S Q, Yao Q. Numerical and experimental study on the deposition of fine particulate matter during the combustion of pulverized lignite coal in a 25 kW combustor, Powder

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张海-上海交通大学机械与动力工程学院 - SJTU

NOx emission characteristics of superfine pulverized anthracite coal in air-staged combustion. Energy Conversion and Management 2013; 74: 454-461. 23.Jun Shen, Jiaxun Liu, Yanfeng Xing, Hai Zhang, Lei Luo, Xiumin Jiang.

Read More