experimental study on particle classification in an ... · 5.1 particlee--groups wgroups with...

Industrial OMB Industrial OMB gasifiergasifier BenchBench--scale OMB scale OMB gasifiergasifier

Experimental Study on Particle Classification Experimental Study on Particle Classification in an Opposed Multiin an Opposed Multi--Burner Burner GasifierGasifierYan Gong*, Guangsuo Yu*, Qinghua Guo*, Zhijie Zhou* and Fuchen Wang*Yan Gong , Guangsuo Yu , Qinghua Guo , Zhijie Zhou and Fuchen Wang

*Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education; *Shanghai Engineering Research Center of Coal Gasification;*East China University of Science and Technology, Shanghai, PR. Chinay gy, g ,

International Freiberg Conference6th on IGCC& XtL TechnologiesCoal Conversion and Syngas

Institute of CleanCoal Technology

Dresden / Radebeul, Germany19-22 May, 2014

OutlineOutline

1 Introduction

2 Measurement Principles

3 Experimental Setup

4 Classification of Particles in Gasifier

5 Other Kinds of Particles

Summary6

Institute of CleanCoal TechnologyExperimental Study on Particle Classification in an Opposed Multi-Burner Gasifier | Page 1 / 17

1. Introduction1. IntroductionG ifi ti b k dG ifi ti b k dGasification backgroundGasification background

Previous workPrevious work

World’s coal consumption1 China’s energy consumption by source 1 World’s gasification capacity by technology 2

2-D and 3-D furnace temperature 2-D and 3-D flame structure

[2] Gasification Technologies Council. State of the Gasification Industry - the Updated Worldwide Gasification Database. http://www.gasification.org/database1/GTC2013---Higman-Paper.pdf.[1] BP Statistical Review of World Energy. http://www.bp.com/content/dam/bp/pdf/statistical-review/statistical_review_of_world_energy_2013.pdf

Measured temperatureof thermocouples

3-D temperature distributionunder different O/Cs

3 Atomization angles of burners at different O/Cs

Depth/height estimationof impinging flame

4


[4] Yan Gong, Qinghua Guo, Jie Zhang, et. al. Impinging Flame Characteristics in an Opposed Multiburner Gasifier. . Ind. Eng. Chem. Res. 52(8): 3007-3018, 2013.[3] Yan Gong, Qinghua Guo, Qinfeng Liang, et. al. Three-dimensional Temperature Distribution of Impinging Flames in an Opposed Multiburner Gasifier. Ind. Eng. Chem. Res. 51(22), 7828-7837, 2012.

Experimental Study on Particle Classification in an Opposed Multi-Burner Gasifier | Page 2 / 17

2. Measurement Principles2. Measurement Principles

Gray scale images of blackbody Calibration installation of Photron high speed camera y g yfurnace at different temperatures

Calculated temperature from captured blackbody furnace images

Calibration temperature of blackbody furnace and gray scale of calibration images

g pcombined with high temperature endoscope

Calibration temperature of blackbody furnace/K

Gray scale of calibration images

1473.0 29.2524

1573 0 36 6700

Gray scale of captured blackbody furnace images

Calculated temperature/K

Measured temperature/K

Relative error

32 1516.9 1523.0 0.40%

41 1616 3 1623 0 0 42%1573.0 36.6700

1673.0 49.6240

1773.0 73.1664

1873 0 112 5600

41 1616.3 1623.0 0.42%

60 1726.5 1723.0 0.20%

90 1819.4 1823.0 0.20%

143 1926.1 1923.0 0.16%1873.0 112.5600

1973.0 177.3660 219 2021.0 2023.0 0.10%

Empirical function between gray level and temperature


195.21487671.17429358.633 3255.122422.136 graygray VV eeT


3. Experimental Setup3. Experimental SetupHigh resolution High speed (color) High speed (monochrome)High resolution High speed (color) High speed (monochrome)

JAI BB-500CL Mikrotron CL-MC1363 Photron FastcamAPX-RS


CESYCO Φ38 and Φ19mmhigh temperature endoscopes

Schematic of the bench-scale OMB gasifier


Coal properties

3. Experimental Setup3. Experimental Setup

Proximate analysis (wt%) Ultimate analysis (wt%) Ash fusion temperature (℃)

Mad Ad Vd FCd Cd Hd Nd Sd Od DT ST HT FT

Coal propertiesRawcoal

4.67 12.03 42.66 45.31 72.67 4.38 1.25 0.55 9.12 1308 1400 1424 1453

Ash composition

Pulverizedcoal

Water AdditiveSiO2 CaO Al2O3 Fe2O3 SO3 MgO K2O Na2O TiO2 Others

40.47 9.75 30.16 4.40 9.43 0.62 0.33 2.78 1.19 0.87Coal-waterslurry

Average particle size/µm Mass concentration Viscosity/mPa·s Density/kg·m-3

Properties of CWS

47.2 60% 263.3 1129

Operating condition of CWS gasificationVO2/Nm3·h-1 MCWS/kg·h-1

O/C mol/molBurner

1#Burner

2#Burner

3#Burner

4#Burner

1#Burner

2#Burner

3#Burner

4#

4 10 4 10 4 10 4 10 10 0 10 0 10 0 10 0 1 00Schematic of the visualization setup


4.10 4.10 4.10 4.10 10.0 10.0 10.0 10.0 1.00Schematic of the visualization setup on bench-scale OMB gasifier


44. Classification of Particles in . Classification of Particles in GasifierGasifier

Flame images at different shutter speedsFlame images at different shutter speeds


44. Classification of Particles in . Classification of Particles in GasifierGasifierLow temperature particle with

high temperature wake

Low temperature

particle with low

High temperature

particle ith t k

temperature wakewithout wake

Hi h t tHigh temperature

particle with high

temperature wake

Low temperature

particleparticle without wake


Classification of different kinds of particles in gasifier


4 1 Hi h T t P ti l ith t W k (HTP)4 1 Hi h T t P ti l ith t W k (HTP)

44. Classification of Particles in . Classification of Particles in GasifierGasifier4.1 High Temperature Particle without Wake (HTP)4.1 High Temperature Particle without Wake (HTP)

Temperature distribution of high temperature particles without wake


Temperature distribution of high temperature particles without wake


4 2 Hi h T t P ti l ith Hi h T t W k (HTP4 2 Hi h T t P ti l ith Hi h T t W k (HTP HTW)HTW)

44. Classification of Particles in . Classification of Particles in GasifierGasifier4.2 High Temperature Particle with High Temperature Wake (HTP4.2 High Temperature Particle with High Temperature Wake (HTP--HTW)HTW)

Temperature distribution of high temperature particles with high temperature wake


Temperature distribution of high temperature particles with high temperature wake


4 3 L T t P ti l ith Hi h T t W k (LTP4 3 L T t P ti l ith Hi h T t W k (LTP HTW)HTW)

44. Classification of Particles in . Classification of Particles in GasifierGasifier4.3 Low Temperature Particle with High Temperature Wake (LTP4.3 Low Temperature Particle with High Temperature Wake (LTP--HTW)HTW)

Low temperature particles with high temperature wake impinge on refractory wall


Temperature distributions of low temperature particles with high temperature wake impinging on refractory wall


4 4 L T t P ti l ith L T t W k (LTP4 4 L T t P ti l ith L T t W k (LTP LTW)LTW)

44. Classification of Particles in . Classification of Particles in GasifierGasifier4.4 Low Temperature Particle with Low Temperature Wake (LTP4.4 Low Temperature Particle with Low Temperature Wake (LTP--LTW)LTW)

The transformation from low temperature particles with low temperature wake to low temperature particles with high temperature waketo low temperature particles with high temperature wake


Temperature distributions of the transformation of low temperature particles with low temperature wake


4 5 L T t P ti l ith t W k (LTP)4 5 L T t P ti l ith t W k (LTP)

44. Classification of Particles in . Classification of Particles in GasifierGasifier4.5 Low Temperature Particle without Wake (LTP)4.5 Low Temperature Particle without Wake (LTP)

Temperature distribution of large diameter 1/10 000 s, 15 fps, p glow temperature particles without wake

p50 mm from lens to focused plane


The transformation of low temperature particle


4 6 Th T f ti b t Diff t Ki d f P ti l4 6 Th T f ti b t Diff t Ki d f P ti l

44. Classification of Particles in . Classification of Particles in GasifierGasifier4.6 The Transformation between Different Kinds of Particles4.6 The Transformation between Different Kinds of Particles


5 1 P ti l5 1 P ti l ith I l Shith I l Sh

5. Other Kinds of Particles5. Other Kinds of Particles5.1 Particle5.1 Particle--groups with Irregular Shapesgroups with Irregular Shapes

A typical structure of particle-group The collision of particle-groups


Image sequence of particle-groups colliding


5 2 Fl k5 2 Fl k h d P ti lh d P ti l

5. Other Kinds of Particles5. Other Kinds of Particles5.2 Flake5.2 Flake--shaped Particleshaped Particle--groupgroup

Burst of flake-shaped particle-group


5 3 L Si P ti l5 3 L Si P ti l ith H ll d S h i l St tith H ll d S h i l St t

5. Other Kinds of Particles5. Other Kinds of Particles5.3 Large Size Particle5.3 Large Size Particle--groups with Hollowed Spherical Structuregroups with Hollowed Spherical Structure


Large size particle-group with hollow structure


6. Summary6. Summary

High temperature particle without wake (HTP)1

The particles in gasifier are mainly classified to five types:

High temperature particle with high temperature wake (HTP-HTW)2

Low temperature particle with high temperature wake (LTP-HTW)3

Low temperature particle with low temperature wake (LTP-LTW) 4

Low temperature particle without wake (LTP)5

LTP could transform to LTP-HTW when contacted with high temperature flame, then transformLTP could transform to LTP HTW when contacted with high temperature flame, then transformto LTP as reactions terminate and the particles become non-reactive;LTP-LTW would transform to LTP-HTW when transfer to high temperature regions;As LTP-HTW adhere to the refractory wall, their wakes vanish and particles transform to HTP;


yHTP-HTW could finally transform to HTP after the end of reactions.


Thank youThank youEast China University of Science & Technology

Institute of Clean Coal Technology

www.ecust.edu.cn

Yan Gong

Institute of Clean Coal Technologyicct.ecust.edu.cn

International Freiberg Conference6thAdd: No 130 Meilong Road Shanghai China

Tel: +86 21 6425 3933Mail: [email protected] 6th on IGCC& XtL Technologies

Coal Conversion and Syngas

Dresden / Radebeul, Germany19-22 May, 2014

Add: No.130 Meilong Road, Shanghai, China

Fax: +86 21 6425 1312

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