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Numerical simulation of bituminous coal combustion in a full-scale tiny-oil ignition burner: influence

Zhengqi LI, Chunlong LIU, Xiang ZHANG, Lingyan ZENG, Zhichao CHEN

Frontiers in Energy 2012, Volume 6, Issue 3,   Pages 296-303 doi: 10.1007/s11708-012-0191-0

Abstract: The progression of ignition was numerically simulated with the aim of realizing a full-scale tiny-oilignition burner that is identical to the burner used in an 800 MWe utility boiler.The gas temperatures were high along the center line of the burner for the four excess air ratios.The flame spread to the burner wall and the high-temperature region was enlarged in the radial direction

Keywords： numerical simulation     tiny-oil ignition burner     pulverized coal     temperature field    

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Numerical simulation of combustion characteristics at different coal concentrations in bituminous coal ignitionin a tiny-oil ignition burner

Chunlong LIU, Qunyi ZHU, Zhengqi LI, Qiudong ZONG, Yiquan XIE, Lingyan ZENG

Frontiers in Energy 2013, Volume 7, Issue 2,   Pages 255-262 doi: 10.1007/s11708-013-0255-9

Abstract: With the objective of producing a full-scale tiny-oil ignition burner, identical to the burner used inMWe utility boiler, numerical simulations were performed using Fluent 6.3.26 to study the progress of ignitionSimulations for a coal concentration of 0.40 kg/kg corresponding to a single burner operating at itsignition.With increasing coal concentration (0.08–0.40 kg/kg), the gas temperature along the burner centerline

Keywords： numerical simulation     tiny-oil ignition burner     pulverized coal     temperature field    

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Influence of different oil feed rate on bituminous coal ignition in a full-scale tiny-oil ignition burner

Chunlong LIU, Qunyi ZHU, Zhengqi LI, Qiudong ZONG, Xiang ZHANG, Zhichao CHEN

Frontiers in Energy 2013, Volume 7, Issue 3,   Pages 406-412 doi: 10.1007/s11708-013-0266-6

Abstract: To reduce oil consumption during firing-up and partial-load operation, a tiny-oil ignition burner hasreacting-flow experiments performed on a full-scale experimental setup, the influence of different oilThe ignition burner is identical to that normally used in an 800 MWe utility boiler.Different gas concentrations were measured at the center of the burner exit.At the same coal feed rate of 4 t/h, burner resistances are 480, 600, and 740 Pa for oil flow rates of

Keywords： ignition     coal     burner     boiler     oil flow rate    

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Influence of nozzle height to width ratio on ignition and NO

Liutao SUN, Yonghong YAN, Rui SUN, Zhengkang PENG, Chunli XING, Jiangquan WU

Frontiers in Energy 2021, Volume 15, Issue 2,   Pages 431-448 doi: 10.1007/s11708-021-0726-3

Abstract: To improve the ignition behavior and to reduce the high NO emissions of blended pulverized fuels (PFfurnace at various nozzle settings, i.e., ratios (denoted by / ) of the height of the rectangular burnerThe combustion tests indicate that the flame stability, ignition performance, and fuel burnout ratioThe smaller / delayed ignition and caused the flame to concentrate excessively on the axis of the furnaceNO emissions at the outlet of the primary zone decreased from 447 to 354 mg/m (O = 6%), and the ignition

Keywords： rectangular jet burner     nozzle height to width ratio     ignition characteristics     pyrolyzed semicoke (SC)    

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performance, emission and combustion characteristics fueled with diesel-like fuel produced from waste engine oil

V. Edwin Geo, Ankit Sonthalia, Fethi Aloui, Femilda Josephin J. S.

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 4, doi: 10.1007/s11783-018-1063-6

Abstract:

To derive liquid fuel from waste engine oil and plastics thoroughprocess

To make equal blend of waste engine oil

Keywords： Waste engine oil     Waste plastic oil     Diesel fuel     Pyrolysis     Compression ignition engine    

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An experimental study on ignition of single coal particles at low oxygen concentrations

Wantao YANG, Yang ZHANG, Lilin HU, Junfu LYU, Hai ZHANG

Frontiers in Energy 2021, Volume 15, Issue 1,   Pages 38-45 doi: 10.1007/s11708-020-0692-1

Abstract: An experimental study on the ignition of single coal particles at low oxygen concentrations ( <21%) wasThe ignition processes were recorded by a high-speed camera at different values and furnace temperaturesIn addition, is less sensitive to while the ignition temperature is more sensitive to at a lowObservations of the position of flame front evolution illustrate that the ignition of a coal particlemay change from a homogeneous mode to a heterogeneous or combined ignition mode as decreases.

Keywords： coal particles     low oxygen concentration     ignition     ignition temperature     ignition modes    

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Numerical study of ignition mechanism of n-heptane direct injection compression-ignition engine

Xiaoping GUO, Zhanjie WANG,

Frontiers in Energy 2009, Volume 3, Issue 4,   Pages 432-439 doi: 10.1007/s11708-009-0050-9

Abstract: reaction and the corresponding cell as ignition position.The result shows that the ignition in the engine can be divided into low-temperature ignition and high-temperatureLow-temperature ignition reaction, whose ignition reaction is c5h9o1-4=ch3cho+c3h5-a, follows the oxidationmechanism, while high-temperature ignition reaction, whose ignition reaction is c2h3o1-2=ch3co, followsNo matter which ignition it is in, the chemical reaction that restrains the ignition reaction from lasting

Keywords： compression-ignition engine     ignition mechanism     elementary reaction     n-heptane    

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Influence of mass air flow ratio on gas-particle flow characteristics of a swirl burner in a 29 MW pulverized

Rong YAN, Zhichao CHEN, Shuo GUAN, Zhengqi LI

Frontiers in Energy 2021, Volume 15, Issue 1,   Pages 68-77 doi: 10.1007/s11708-020-0697-9

Abstract: megawatt (MW) pulverized coal industrial boiler equipped with a new type of swirling pulverized coal burnerThe mean axial velocity and the particle volume flux in the central region of the burner outlet wereThis indicated that a central recirculation zone was formed in the center of the burner.direction of the jet, the peak value formed by the tertiary air gradually moved toward the center of the burner

Keywords： industrial pulverized coal boiler     swirl burner     air/particle flow     particle dynamic analyzer (PDA)    

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Ignition of Diesel by Heated Surface

Li Yuanlong,Lu Shouxiang,Fan Weicheng

Strategic Study of CAE 2004, Volume 6, Issue 11,   Pages 63-65

Abstract:

The ignition of leaked fuel of the diesel engine is studied experimentally.The critical ignition temperature is calculated statistically.The difference between the ignition temperature and auto - ignition temperature of diesel is much lessThe ignition mode is also much different from its counterpart.

Keywords： hot surface     ignition test     boiling    

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Effect of distributions of fuel concentration and temperature on ignition processes in a diesel PCCI

Yang YU, Wanhua SU,

Frontiers in Energy 2010, Volume 4, Issue 2,   Pages 269-279 doi: 10.1007/s11708-009-0046-5

Abstract: The distributions of fuel concentration and temperature have significant effect on the ignition processesof diesel premixed charge compression ignition (PCCI) combustion.It was found in this study that the ignition process of PCCI combustion organized by multi-pulse injectionIgnition always occurred in the position where the mixture featured with equivalence ratios close toa larger initial ignition area and a higher temperature at the ignition area.

Keywords： PCCI     fuel stratification     multi-pulse injection     ignition    

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Study on electrical ignition and micro-explosion properties of HAN-based monopropellant droplet

Yonggang YU, Ming LI, Yanhuang ZHOU, Xin LU, Yuzhu PAN,

Frontiers in Energy 2010, Volume 4, Issue 3,   Pages 430-435 doi: 10.1007/s11708-010-0010-4

Abstract: In order to study the electrical ignition characteristics of hydroxylammonium nitrate (HAN)-based liquidpropellant, an experimental device for the electrical heating ignition of a liquid propellant dropletBy using a high speed camera system, the ignition properties of the LP1846 single droplet were observedWhen peak load voltage is from 80 to 140V/s, the ignition delay of the LP1846 droplet is linearlyBased on the above experiments, a simplified model of the electrical heating ignition of the LP1846 single

Keywords： liquid propellant     electrical ignition     ignition delay time     transient measurement    

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New experimental technique to determine coal self-ignition duration

ZHANG Xinhai, XI Guang, ZHANG Xinhai

Frontiers in Energy 2008, Volume 2, Issue 4,   Pages 479-483 doi: 10.1007/s11708-008-0058-6

Abstract: An artificial neural network (ANN) model was adopted to simulate the relationship between self-ignitionAn oil-bath programmed temperature experiment device was designed and the experimental condition andThe sulfur content, the ash content and the data from the oil-bath experiment were taken as ANN inputsto calculate the experiment self-ignition duration of coal.than 1% of coal sample and 10% of time are required with an error of less than 3 days to test self-ignition
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Development and demonstration plant operation of an opposed multi-burner coal-water slurry gasification

WANG Fuchen, ZHOU Zhijie, DAI Zhenhua, GONG Xin, YU Guangsuo, LIU Haifeng, WANG Yifei, YU Zunhong

Frontiers in Energy 2007, Volume 1, Issue 3,   Pages 251-258 doi: 10.1007/s11708-007-0035-5

Abstract: The features of the opposed multi-burner (OMB) gasification technology, the method and process of the
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An experimental study on spray auto-ignition of RP-3 jet fuel and its surrogates

Yaozong DUAN, Wang LIU, Zhen HUANG, Dong HAN

Frontiers in Energy 2021, Volume 15, Issue 2,   Pages 396-404 doi: 10.1007/s11708-020-0715-y

Abstract: In the latter case, fuel spray auto-ignition behavior is an important index for engine operation reliabilityThe spray auto-ignition characteristics of RP-3 jet fuel and its three surrogates, the 70% mol -decaneExperimental results indicate that Surrogate 1 overestimates the auto-ignition propensity of RP-3 jetfuel, whereas Surrogates 2 and 3 show quite similar auto-ignition propensity with RP-3 jet fuel.Therefore, to capture the spray auto-ignition behaviors, DCN is the most important parameter to match

Keywords： RP-3 jet fuel     surrogate     spray auto-ignition     constant volume combustion chamber    

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Effect of 2,5-dimethylfuran addition on ignition delay times of n-heptane at high temperatures

Zhenhua GAO, Erjiang HU, Zhaohua XU, Geyuan YIN, Zuohua HUANG

Frontiers in Energy 2019, Volume 13, Issue 3,   Pages 464-473 doi: 10.1007/s11708-019-0609-z

Abstract: The experimental observations indicate that the ignition delay times nonlinearly increase with an increasechanged due to the competition of small radicals, which primarily leads to the nonlinear increase in the ignition

Keywords： ignition delay time     shock tube     kinetic model     2     5-dimethylfuran (DMF)     n-heptane    

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Title Author Date Type Operation

Numerical simulation of bituminous coal combustion in a full-scale tiny-oil ignition burner: influence

Zhengqi LI, Chunlong LIU, Xiang ZHANG, Lingyan ZENG, Zhichao CHEN

Journal Article

Numerical simulation of combustion characteristics at different coal concentrations in bituminous coal ignitionin a tiny-oil ignition burner

Chunlong LIU, Qunyi ZHU, Zhengqi LI, Qiudong ZONG, Yiquan XIE, Lingyan ZENG

Journal Article

Influence of different oil feed rate on bituminous coal ignition in a full-scale tiny-oil ignition burner

Chunlong LIU, Qunyi ZHU, Zhengqi LI, Qiudong ZONG, Xiang ZHANG, Zhichao CHEN

Journal Article

Influence of nozzle height to width ratio on ignition and NO

Liutao SUN, Yonghong YAN, Rui SUN, Zhengkang PENG, Chunli XING, Jiangquan WU

Journal Article

performance, emission and combustion characteristics fueled with diesel-like fuel produced from waste engine oil

V. Edwin Geo, Ankit Sonthalia, Fethi Aloui, Femilda Josephin J. S.

Journal Article

An experimental study on ignition of single coal particles at low oxygen concentrations

Wantao YANG, Yang ZHANG, Lilin HU, Junfu LYU, Hai ZHANG

Journal Article

Numerical study of ignition mechanism of n-heptane direct injection compression-ignition engine

Xiaoping GUO, Zhanjie WANG,

Journal Article

Influence of mass air flow ratio on gas-particle flow characteristics of a swirl burner in a 29 MW pulverized

Rong YAN, Zhichao CHEN, Shuo GUAN, Zhengqi LI

Journal Article

Ignition of Diesel by Heated Surface

Li Yuanlong,Lu Shouxiang,Fan Weicheng

Journal Article

Effect of distributions of fuel concentration and temperature on ignition processes in a diesel PCCI

Yang YU, Wanhua SU,

Journal Article

Study on electrical ignition and micro-explosion properties of HAN-based monopropellant droplet

Yonggang YU, Ming LI, Yanhuang ZHOU, Xin LU, Yuzhu PAN,

Journal Article

New experimental technique to determine coal self-ignition duration

ZHANG Xinhai, XI Guang, ZHANG Xinhai

Journal Article

Development and demonstration plant operation of an opposed multi-burner coal-water slurry gasification

WANG Fuchen, ZHOU Zhijie, DAI Zhenhua, GONG Xin, YU Guangsuo, LIU Haifeng, WANG Yifei, YU Zunhong

Journal Article

An experimental study on spray auto-ignition of RP-3 jet fuel and its surrogates

Yaozong DUAN, Wang LIU, Zhen HUANG, Dong HAN

Journal Article

Effect of 2,5-dimethylfuran addition on ignition delay times of n-heptane at high temperatures

Zhenhua GAO, Erjiang HU, Zhaohua XU, Geyuan YIN, Zuohua HUANG

Journal Article