China un

iversity of m

ining and techno

logy，Be

ijing

Stud

y on

pet

rolo

gy a

nd g

eoch

emis

try

of

feed

coa

ls a

nd th

eir g

asifi

ed re

sidu

es,

Nin

gxia

Hui

Aut

onom

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Reg

ion,

Chi

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ang

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uo1 ,

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ng X

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ert B

. Fin

kelm

an2 ,

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chen

g H

an1 ,

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li Ji

a1, B

inbi

n H

uan1

, Xi P

an1

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hina

Uni

vers

ity o

f Min

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and

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hnol

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Bei

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83, P

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hina

2 D

epar

tmen

t of G

eosc

ienc

es, U

nive

rsity

of T

exas

at D

alla

s, U

SA

2015

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rld

of

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al A

sh (

WO

CA

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nce

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asvh

ille,

TN

- M

ay 5

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015

htt

p:/

/ww

w.f

lyas

h.in

fo/

outli

ne

1. In

trud

ucti

on

2. C

hara

cter

isti

cs o

f co

al  p

etro

log

y

3. C

hrac

teri

stic

s  o

f co

al c

hem

istr

y

4. c

hara

cter

isti

cs o

f G

eoch

emis

try 

http://w

ww.ppthi‐hoo

.com

China University

 of M

ining an

d Techno

logy, B

eijin

g

5. s

umm

ary

outli

ne

1. In

trud

ucti

on

2. C

hara

cter

isti

cs o

f co

al  p

etro

log

y

3. C

hrac

teri

stic

s  o

f co

al c

hem

istr

y

4. c

hara

cter

isti

cs o

f G

eoch

emis

try 

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ww.ppthi‐hoo

.com

China University

 of M

ining an

d Techno

logy, B

eijin

g

5. s

umm

ary

•Objectiv

eM

ain

goal

of o

ur re

sear

ch is

to p

robe

occ

urre

nce

and

dist

ribut

ion

of h

arm

ful t

race

el

emen

t dur

ing

coal

gas

ifica

tion

tech

nolo

gy, N

ingxia, China

•Prob

lem

Harm

ful trace elemen

ts in

coa

l is e

nviro

rmen

tala

nd re

sour

ce p

robl

em in

coa

l sc

ienc

e an

d te

chno

logy

Whi

ch c

ompo

sitio

n, d

istri

butio

n, m

igra

tion,

evo

lutio

n of

har

mfu

l ele

men

t-co

ntai

ning

com

poun

d in

coa

ls a

nd c

oal u

tiliz

atio

n a

re c

ompl

ex p

robl

em?

1 In

trod

uctio

n

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ww.ppthi‐hoo

.com

China un

iversity of m

ining and techno

logy

•TheJurassic coalsfrom

Ningdon

g coal field 

were gasificated

 in differen

t techn

ology 

(Fou

r nozzles opp

osed

 coal w

ater slurry, 

Texaco coal w

ater slurry and

 GSP 

powde

red coal gasificatio

n) and

 reacted to 

gasified resid

ues. 

•Ten samples of feed coals a

nd th

eir g

asified

 resid

ues from Ningdon

g mod

ern coal 

chem

ical engineerin

g factory, Ningxia 

autono

mou

s region, China.

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iversity of m

ining and techno

logy

1

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.com

China un

iversity of m

ining and techno

logy

Gasificatio

n techno

logy

Feed

stock

Tempe

rature

Gasifier 

pressure

Four nozzles opp

osed

 CWS gasification

CWS、

O2

1300

3.8M

Pa

Texaco CWS gasification

CWS、

O2

1250

4.3M

Pa

GSP pow

dered coal gasificatio

nPo

wde

r coal、

O2、

H 2O

1350

‐145

03.8‐4.0M

Pa

Table1. Techn

ologies o

f coa

l gasificatio

n

http://w

ww.ppthi‐hoo

.com

1

Sampling site

Feed

 coal

Coarse 

residu

eFine

 residu

eFilte

r cake

Four nozzles opp

osed

 CWS gasification

11

‐1

Texaco CWS gasification

11

11

GSP pow

dered coal gasificatio

n1

1‐

1

total

33

13

•Microscop

ic pho

tometry, SEM

—ED

X，proxim

ate analysis, ultimate 

analysis, XRD

, XRF

 and

 ICP‐MS wereused

 to analyze

these ten samples . 

Table2.  Sam

ples

China un

iversity of m

ining and techno

logy

outli

ne

1. In

trud

ucti

on

2. C

hara

cter

isti

cs o

f co

al  p

etro

log

y

3. C

hrac

teri

stic

s  o

f co

al c

hem

istr

y

4. c

hara

cter

isti

cs o

f G

eoch

emis

try 

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ww.ppthi‐hoo

.com

China University

 of M

ining an

d Techno

logy, B

eijin

g

5. s

umm

ary

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ww.ppthi‐hoo

.com

China un

iversity of m

ining and techno

logy

Feed

coal

TCT

CGCD

VDV

FSF

Ma

Mi

IDI

F‐CW

S 11

.26.6

0.2

26.7

5.7

50.3

2.9

22.5

5.8

10.4

4.9

46.4

T‐CW

S9.1

12.7

0.2

27.4

3.6

52.9

3.4

24.6

1.5

5.7

8.0

43.3

GSP 

9.2

11.3

0.4

25.0

3.9

49.8

3.2

24.1

33.8

10.7

44.7

Feed

coal

SpCu

tSub

Res

Alg

LCl

PyQ

MR m

ax, %

F‐CW

S 0.2

0.5

0.6

0.2

0.0

1.5

1.1

0.6

0.0

1.8

0.56

T‐CW

S0.5

0.5

0.3

0.2

0.2

1.5

1.4

0.8

0.2

2.3

0.57

GSP

1.5

1.1

0.2

0.2

0.0

3.0

1.3

0.9

0.2

2.4

0.50

Table3. M

acerals, M

inerals a

nd R

oof fe

ed coa

l 

Fig .1 F‐CWS feed

 coa

lFig .2 F‐CWS coarse re

sidue

China un

iversity of m

ining and techno

logy

Vch

ange

d V

100 μ m

100 μ m

Fig .3 T‐CWS feed

 coa

l

Fig .4, 5

 T‐CWS coarse re

sidue China un

iversity of m

ining and techno

logy

I

chan

ged

I

100 μ m

100 μ m

100 μ m

样品

的煤

岩学

特征

Liptinite

 and

 vitrinite

 alm

ost d

isapp

ear a

nd produ

ce so

me ne

w com

pone

nt (Fig.6,7). 

Fig .6 Gasified

ceno

sphere

(T‐CWS‐fin

e resid

ue)

Fig .7 Gasified

 pore 

(GSP‐filte

r cake) 

China un

iversity of m

ining and techno

logy

Resi

due 

petr

olog

y

China un

iversity of m

ining and techno

logy

Sample

Amorph

ous

Meta‐

Maceral

Pore

Mineral

glass

Ceno

sphe

reOther

F‐CR

27.1

2.0

9.7

18.1

37.6

5.6

‐

F‐FC

8.7

‐45.3

2.5

19.7

23.5

0.2

T‐CR

36.8

0.4

31.0

12.0

16.7

2.9

0.4

T‐FR

31‐

35.4

10.2

15.6

7.8

‐

T‐FC

10.7

9.8

57.5

1.3

12.1

8.4

‐

GSP

‐CR

15.8

‐21.1

9.5

39.5

13.4

0.6

GSP

‐FC

5.9

‐81.3

3.4

5.3

4.3

‐

Tabl

e 4

Mac

eral

s qu

antit

ativ

e st

atis

tics

of g

asifi

ed re

sidu

es（

%）

There are also so

me incompletely reacted macerals such as vitrinite

 and

 inerinite

 (Fig.8), bu

t the

 remnants m

orph

ological structure be

tween vitrinite

 and

 inertin

ite 

compared with

 morph

ological structure of feed

coal vitrinite

 and

 inertin

ite sh

ow th

at 

the first group

 changes a lot a

nd includ

e more minerals (Fig.9). 

Fig .8 Incompletely reacted vitrinite

（T‐CW

S‐filter cake）

Fig .9 Gasificatio

n mineral

（F‐CW

S‐filter cake）

Qua

ntita

tive statisticsfor re

sidu

esshow

 that in

 the filter cake,organic 

compo

nent is th

e highest com

pone

nt, and

 there is high mineral m

atterin 

coarse re

sidu

e.

China un

iversity of m

ining and techno

logy

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.com

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iversity of m

ining and techno

logy

Table 5. XRD

 ana

lysis o

f Sam

ples

Samples

Type

s and

 con

tent of m

inerals（

%）

Amorph

ous

Clay(%

)

Quartz

Ortho

clase

Calcite

Pyrite

Side

rite

F‐CW

SFeed

coal

4.3 

/2.5 

0.6 

0.9 

82.3 

9.4 

Coarse re

sidue

5.2 

1.0 

3.6 

//

89.2 

1.0 

Filte

r cake

3.1 

/4.3 

//

85.4 

7.2 

T‐CW

SFeed

coal

3.5 

/1.2 

0.4 

1.0 

83.7 

10.2 

Coarse re

sidue

5.3 

/7.8 

//

78.5 

8.4 

Fine

 resid

ue5.6 

/10

.5 

1.7 

/74

.4 

7.8 

Filte

r cake

3.0 

/5.0 

//

87.1 

4.9 

7.9 

0.4  

1.2 

1.5 

/70

.1 

18.9 

GSP

Feed

coal

Coarse re

sidue

7.3 

/5.1 

//

83.0 

4.6 

Filte

r cake

3.8 

/3.3 

1.3 

/88

.1 

3.5 

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iversity of m

ining and techno

logy

d=10.0295

d=7.1841

d=4.4803d=4.3797

d=4.2650

d=3.5872

d=3.3508

d=3.0345

d=2.8014d=2.7145

d=2.5652d=2.4961

d=2.4590

d=2.3493

d=2.2839

d=2.2118

d=2.1315d=2.0906

1020

3040

2-T

heta

(°

0

1000

2000

3000

4000

5000

6000

7000 Intensity(CPS)

[14-

1269

1.as

c]

Qua

rtz

Cal

cite

Apat

ite

Fig.

10

XR

D o

f F-C

WS

raw

coa

l

d=10.0871

d=7.1671

d=4.4802d=4.2630

d=4.1700

d=3.5870

d=3.3495

d=3.1260d=3.0305

d=2.7997

d=2.5623d=2.4948d=2.4571

d=2.3399d=2.2850

d=2.1286d=2.0787

1020

3040

2-T

heta

(°

0

1000

2000

3000

4000

5000

6000 Intensity(CPS)

[14-

1269

2.as

c]

d=10.0860

d=7.2076

d=4.4868d=4.3752

d=4.2711

d=3.5886

d=3.3533

d=3.2569

d=3.0275

d=2.7145

d=2.5694d=2.4960

d=2.4623

d=2.3405d=2.2840

d=2.2388d=2.2136

d=2.1310

1020

3040

2-T

heta

(°

0

2500

5000

7500 Intensity(CPS)

[14-

1269

3.as

c]

Fig. 12 XR

D of GSP ra

w coa

l

Fig. 11 XR

D of T‐CWS raw coa

l

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iversity of m

ining and techno

logy

Stib

nite

Stib

nite

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ww.ppthi‐hoo

.com

China un

iversity of m

ining and techno

logy

SEM f

ed

cb

a

http://w

ww.ppthi‐hoo

.com

China un

iversity of m

ining and techno

logy

SEM

l

k

ji

hg

http://w

ww.ppthi‐hoo

.com

China un

iversity of m

ining and techno

logy

SEM

po

nm

http://w

ww.ppthi‐hoo

.com

China un

iversity of m

ining and techno

logy

SEM

tsr

q

outli

ne

1. In

trud

ucti

on

2. C

hara

cter

isti

cs o

f co

al  p

etro

log

y

3. C

hrac

teri

stic

s  o

f co

al c

hem

istr

y

4. c

hara

cter

isti

cs o

f G

eoch

emis

try 

http://w

ww.ppthi‐hoo

.com

China University

 of M

ining an

d Techno

logy, B

eijin

g

5. s

umm

ary

Cha

ract

eris

tics 

of c

oal c

hem

istr

y

http://w

ww.ppthi‐hoo

.com

China un

iversity of m

ining and techno

logy

Note；

G—caking

 inde

xTable6. Proximate an

alysis and

 ultimate an

alysis

Samples

Mad

A dV d

afFC

dG

S t,d

C dC d

afHda

fNda

fOda

f

%%

%%

%%

%%

%%

%

F‐CW

SFeed

coal

12.2

12.7

32.45 

58.97 

20.57

68.3

78.24 

3.96

 0.92

 16.23 

Coarse re

sidue

0.01

99.66

91.18 

0.03

40.16

0.15

 44.57 

1.88

 2.93

 3.56

 

Filte

r cake

32.68

81.89

1.99

 12

.28

10.36

16.35 

90.27 

1.39

 0.69

 5.65

 

T‐CW

SFeed

coal

9.86

10.21

31.77 

61.26 

20.47

69.74

77.67 

4.07

 0.89

 16.86 

Coarse re

sidue

0.18

96.63

51.63 

1.62

40.18

3.03

 89.79 

1.87

 1.45

 1.56

 

Fine

 resid

ue1.53

89.37

25.96 

7.87

10.20

10.09 

94.93 

1.93

 0.80

 0.47

 

Filte

r cake

35.06

57.22

23.40 

32.77

10.40

37.40 

87.43 

1.71

 0.74

 9.18

 

GSP

Feed

coal

13.43

11.53

34.26 

58.16 

20.90

69.00

77.99 

4.32

 1.07

 15.60 

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Table7.  Total su

lfur a

nd differen

t sulfur forms

Samples

St,d

Sp,d 

Ss,d 

So,d 

%%

%%

F‐CW

SFeed

coal

0.57

0.39

 0.02

 0.16

 

Coarse re

sidue

0.16

0.12

 0.02

 0.02

 

Filte

r cake

0.36

0.10

 0.12

 0.14

 

T‐CW

SFeed

coal

0.47

0.28

 0.02

 0.17

 

Coarse re

sidue

0.18

0.10

 0.04

 0.04

 

Fine

 resid

ue0.20

0.13

 0.04

 0.03

 

Filte

r cake

0.40

0.14

 0.14

 0.12

 

GSP

Feed

coal

0.90

0.62

 0.02

 0.25

 

Coarse re

sidue

0.52

0.10

 0.03

 0.39

 

Filte

r cake

0.62

0.15

 0.12

 0.35

 

4

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ining and techno

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Table8. Ash com

pone

nt ana

lysis o

f Sam

ples

Samples

SiO

2Fe

2O3

TiO

2P 2O

5Ca

OMgO

Al2O

3SO

4K 2O

Na 2O

MnO

2

F‐CW

SFeed

coal

38.45

12.18

0.66

0.05

11.64

4.41

16.78

4.11

1.45

1.92

0.276

Coarse re

sidue

39.02

15.30

0.71

0.07

17.02

5.67

16.65

0.01

1.24

3.03

0.462

Filte

r cake

32.40

8.54

0.71

0.10

10.21

5.70

15.56

0.35

1.18

3.40

0.224

T‐CW

SFeed

coal

32.1

15.54

0.56

0.06

12.38

414.66

6.19

1.03

1.81

0.342

Coarse re

sidue

34.35

15.66

0.71

0.07

18.48

6.36

16.44

0.08

1.12

2.90

0.478

Fine

 resid

ue32.52

14.98

0.62

0.06

17.09

5.73

14.59

0.16

1.00

2.48

0.499

Filte

r cake

21.35

5.74

0.46

0.08

8.66

4.60

10.65

0.35

0.80

2.30

0.163

GSP

Feed

coal

46.98

9.82

0.91

0.34

6.28

3.3

21.1

2.5

1.54

1.41

0.115

Coarse re

sidue

47.62

7.91

0.83

0.19

7.86

2.80

19.16

0.53

1.42

1.23

0.171

Filte

r cake

32.55

5.94

0.58

0.32

4.92

2.64

13.50

0.63

1.02

1.03

0.206

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Table8. Ash fu

sibility for feed coal

•The contents of feed coal ash com

position and fusib

ility sh

ow th

at th

e rate of 

SiO2 is high

 but Al 2O

3is lower. B

ecause th

e rate of SiO

2/Al

2O3is high, and

 the 

alkaline compo

nents such as C

aO, Fe 2O3, K 2O, N

a 2O is re

latively high

 in ash, so 

the ash fusib

ility is lower.

Coal sa

mples

DTST

HT

FT

F‐CW

S1150

1170

1180

1190

T‐CW

S1150

1160

1170

1180

GSP

1180

1220

1230

1240

outli

ne

1. In

trud

ucti

on

2. C

hara

cter

isti

cs o

f co

al  p

etro

log

y

3. C

hrac

teri

stic

s  o

f co

al c

hem

istr

y

4. c

hara

cter

isti

cs o

f G

eoch

emis

try 

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 of M

ining an

d Techno

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eijin

g

5. s

umm

ary

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iversity of m

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samples

SiO2

Al2O

3Fe

2O3

MgO

CaO

Na2O

K2O

MnO

2TiO

2P2O5

Loss*

FeO

%%

%%

%%

%%

%%

%%

F‐CW

SFeed

coal

4.33

1.7

1.82

0.679

1.62

0.3

0.187

0.04

0.097

0.014

89.18

1.28

Coarse 

resid

ue37.95

16.21

13.5

5.42

14.66

2.75

1.34

0.302

0.689

0.054

6.52

5.54

Filte

r cake

31.57

15.54

8.97

5.72

10.61

3.09

1.31

0.187

0.734

0.09

21.71

6.82

T‐CW

SFeed

coal

6.42

2.08

1.93

0.708

1.88

0.334

0.258

0.038

0.137

0.023

86.14

1.43

Coarse 

resid

ue24.42

10.61

9.9

3.92

10.65

1.66

0.829

0.228

0.474

0.038

36.78

7.63

Fine

 resid

ue23.98

10.38

10.55

4.01

10.99

1.61

0.797

0.237

0.466

0.039

36.76

8.25

Filte

r cake

22.08

10.77

6.1

4.58

9.06

2.05

0.926

0.135

0.521

0.077

43.12

4.44

GSP

Feed

coal

6.54

2.81

1.69

0.656

1.31

0.223

0.236

0.023

0.162

0.064

86.12

0.84

Coarse 

resid

ue48.88

19.5

7.64

2.89

7.01

1.15

1.56

0.103

0.83

0.171

9.68

6.44

Filte

r cake

34.41

14.22

5.49

2.9

5.61

1.05

1.24

0.058

0.694

0.372

33.41

3.86

Table9. M

ajor elemen

ts of feed coals a

nd re

sidu

es (X

RF)

4

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iversity of m

ining and techno

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HgLi

Be

Sc

VCr

Co

Ni

Cu

Zn

Ga

Rb

Sr

YMo

Cd

In

Sb

Cs

Ba

La

Ce

Pr

10.

030

2.63

0.506

1.81

14.5

8.58

2.73

5.11

49.4

19.8

2.11

6.43

345

4.03

0.208

0.047

0.009

0.287

0.779

138

4.98

8.16

1.07

20.

010

34.4

3.82

20.5

122

98.9

28.6

50.5

64.3

2016.4

72.8

3190

45.8

2.17

0.004

0.01

0.387

7.72

1410

67.6

106

143

0.009

31.5

4.11

20.4

123

107

40.7

54.3

82.3

238

40.7

702792

44.8

2.33

0.717

0.345

77.86

979

56.9

94.6

12.1

40.

029

3.76

0.529

2.23

15.4

9.88

3.43

10.2

9.11

16.3

2.72

8.63

305

5.77

0.177

0.009

0.009

0.2

0.729

141

8.19

13.8

1.81

50.

009

14.9

2.29

10.4

61.7

56.6

16.9

30.9

35.9

21.5

9.54

36.1

1896

25.2

0.934

0.006

0.014

0.305

4.17

644

36.5

59.2

7.66

60.

009

212.77

13.8

77.2

6020.1

35.1

45.3

31.6

13.2

41.5

2386

30.8

0.98

0.015

0.026

0.662

4.73

756

43.9

72.6

9.19

70.

024

22.3

3.4

12.8

77.4

73.6

26.1

40.1

56.8

174

30.4

46.1

2281

28.1

1.26

1.27

0.245

5.22

5.19

598

34.7

60.9

7.48

80.

037

4.15

0.344

2.57

15.8

10.5

4.1

4.98

9.49

8.05

3.18

9.8

296

5.69

0.368

0.067

0.015

0.126

1.55

457

7.52

12.8

1.67

90.

004

39.1

3.76

17.8

102

6522.3

27.3

49.5

17.9

7.7

55.4

2400

42.9

1.98

0.08

10.008

0.387

8.67

2674

65.7

90.7

14.7

100.009

38.9

3.71

16.3

105

68.1

24.9

34.1

100

77.9

27.9

67.2

1726

38.8

2.18

0.304

0.088

1.37

9.02

1199

50.8

84.8

11.2

110.163

3.18

2.11

4.38

35.1

15.4

7.08

13.7

17.5

41.4

6.55

9.25

140

18.2

3.08

0.25

0.047

0.84

1.13

159

22.5

46.7

6.42

FNd

Sm

Eu

Gd

Tb

Dy

Ho

Er

Tm

Yb

Lu

WRe

Tl

Pb

Bi

Th

UNb

Ta

Zr

Hf

192

.11

3.96

0.767

0.171

0.805

0.128

0.643

0.155

0.303

0.066

0.443

0.043

0.318

0.004

0.165

4.03

0.11

2.01

0.687

1.03

0.062

11.2

0.286

230

1.36

52.8

9.63

2.07

8.25

1.43

7.69

1.69

4.21

0.629

4.09

0.555

2.05

0.019

0.161

4.63

0.041

22.7

5.75

11.8

0.868

163

5.04

370

0.46

45.1

8.34

2.01

7.61

1.3

6.77

1.38

3.79

0.531

3.88

0.505

2.21

0.026

4.11

168

3.65

21.5

7.21

120.85

119

3.69

475

.44

6.91

1.25

0.266

0.975

0.171

0.915

0.22

0.508

0.086

0.577

0.083

0.289

0.008

0.179

5.01

0.102

2.94

0.713

1.55

0.123

24.1

0.781

552

4.48

27.8

5.21

1.15

4.24

0.825

4.06

0.844

2.06

0.358

2.34

0.29

1.07

0.007

0.261

6.64

0.042

123.05

6.45

0.448

77.5

2.47

658

8.55

34.1

6.21

1.43

4.95

0.893

5.03

0.991

2.57

0.448

2.53

0.351

1.23

0.02

0.514

11.1

0.12

14.4

3.74

7.33

0.526

932.86

790

7.95

28.3

5.35

1.28

4.76

0.827

4.5

0.874

2.41

0.431

2.63

0.306

1.28

0.009

3.39

126

3.05

13.2

4.7

7.62

0.492

70.3

2.39

816

4.95

6.34

1.2

0.201

0.937

0.189

0.893

0.177

0.48

0.088

0.553

0.085

0.39

0.007

0.695

5.28

0.123

3.25

0.891

1.7

0.152

18.2

0.561

920

4.93

54.1

101.8

8.25

1.43

7.04

1.47

3.91

0.62

4.07

0.539

1.86

0.023

1.17

3.43

0.033

23.4

4.38

13.1

1.12

205

6.54

1083

1.72

40.6

7.58

1.62

6.36

0.993

6.21

1.12

3.18

0.565

3.67

0.49

2.64

0.017

4.56

45.4

0.973

18.5

6.14

110.739

122

3.54

1113

0.00

22.3

4.07

0.84

4.65

0.62

3.74

0.96

1.79

0.64

2.08

0.38

1.08

nd0.47

15.1

0.79

5.84

2.43

9.44

0.62

89.5

3.71

Table10

. Trace elemen

ts in

 samples

Note: 1.F‐CWS feed

 coal, 2. F‐CWS coarse re

sidue

, 3. F‐CWS filter cake, 4. T‐CWS feed

 coal, 5. T‐CWS coarse re

sidue

, 6. T‐CWS fin

e resid

ue, 7. T‐CWS filter cake, 8. G

SP fe

ed coal, 

9. GSP coarse resid

ue, 10. GSP filte

r cake，

11. M

ean in Chine

se coal.

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ining and techno

logy

Concen

tration Co

efficient (C

C)：Ratio

 of trace elemen

t con

tent  in sample to trace 

elem

ent con

tent in

 Chine

se coal

10＜CC

＜100：

very rich    Li, Sr, B

a, Pb

5＜CC

＜10

：rich    Cr, Co, Zn ,Cd, Sb,Tl,F, …                   

2＜CC

＜5：

light rich    U,Ni,C

u, …

0.5＜

CC＜2：

norm

al 

CC＜0.5：

exhaust

2

0.5

Fig. 20 CC

 of feed coal in

 different g

asificated techno

logy

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China un

iversity of m

ining and techno

logy

•Meij (1994) p

ropo

sed relative en

richm

ent facts of trace elemen

t,f RE=C i

n/C i

c×（A a

d）c/100;

now con

sider th

e influ

ence of ash in

 resid

ue and

 make the RE

 better:

f RE=C i

n/C i

c×（A a

d）c/（A a

d）n.

∙  f RE=1  sa

id trace elem

ents in

 the resid

ue is neither rich nor exhausted

; 

f RE＞

1 said trace elem

ent in the resid

ue has enrichimen

t ten

dency; 

f RE＜

1 said trace elem

ent in the resid

ue has exhausted

 tend

ency.

Relative en

richm

ent facts of trace elemen

t in resid

ues

Note: 2. F‐CWS coarse re

sidue

, 3. F‐CWS filter cake, 5. T‐CWS coarse re

sidue

, 6. T‐CWS fin

e resid

ue, 7. T‐CWS filter cake, 9. G

SP coarse resid

ue, 10. GSP filte

r cake.

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iversity of m

ining and techno

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样品

的地

球化

学特

征

Fig.

21

f RE

of F

-CW

S re

sidu

e

Fig.

22

f RE

of T

-CW

S re

sidu

e

outli

ne

1. In

trud

ucti

on

2. C

hara

cter

isti

cs o

f co

al  p

etro

log

y

3. C

hrac

teri

stic

s  o

f co

al c

hem

istr

y

4. c

hara

cter

isti

cs o

f G

eoch

emis

try 

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.com

China University

 of M

ining an

d Techno

logy, B

eijin

g

5. s

umm

ary

1 D

urin

g ga

sific

atio

n, li

ptin

ite a

nd v

itrin

ite a

lmos

t dis

appe

ared

res

ultin

g in

ne

w c

ompo

nent

s. G

asifi

ed c

enos

here

s and

por

es o

ccur

. The

cla

ssifi

catio

n of

ga

sifie

d re

sidu

es is

dis

cuss

ed.

Qua

ntita

tive

stat

istic

s for

the

resi

dues

show

th

at in

the

coar

se r

esid

ue, m

iner

al m

atte

r is

the

high

est c

ompo

nent

, and

ther

e ar

e ab

unda

nt o

rgan

ic c

ompo

nent

s in

the

resu

ltant

filte

r ca

ke.

2 T

he a

sh in

the

gasi

ficat

ion

resi

due

incr

ease

d si

gnifi

cant

ly. M

oist

ure

in th

e co

arse

res

idue

and

fine

res

idue

dec

reas

ed w

hile

in th

e fil

ter

cake

it is

in

crea

sed.

The

con

tent

s of C

and

O in

crea

sed

grad

ually

from

coa

rse

resi

due

to fi

lter

cake

whi

le th

e co

nten

ts o

f H a

nd N

dec

reas

ed g

radu

ally

.

3 In

coa

ls a

nd th

eir

gasi

fied

resi

dues

, the

con

tent

s of h

azar

dous

trac

e el

emen

ts

with

the

feed

coa

l, co

arse

res

idue

, fin

e re

sidu

e an

d fil

ter

cake

incr

ease

s gr

adua

lly. I

n fil

ter

cake

, the

re a

re v

erey

ric

h in

res

ourc

e el

emen

ts a

nd

haza

rdou

s tra

ce e

lem

ents

Sum

mar

y

Ack

now

ledg

e

Chi

na N

atio

nal

Key

Res

earc

h P

rogr

am (2

014B

C23

8905

)

Prof

. Shi

feng

Dai

, Pro

f. Sh

uqin

g Li

u in

CU

MTB

Nin

gxia

Coa

l Gas

ifica

tion

Fact

ory

Thanks

for Your

Listening My

Presentation!

China un

iversity of m

ining and techno

logy