Volume 3 Burning Workshop

8/18/2019 Volume 3 Burning Workshop

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3000t/d Cement Projectof National Cement Share Company,Ethiopia

3000t/d Cement Project of National Cement Share

Company, Ethiopia

Training material

Pyro Processing


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ContentsCHAPTE ! "ntrod#ction $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ 3

CHAPTE % P&CESS '(&) AN* E+"P-ENTS$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $.

2.1 PROCESS!O"....................................................................... ...................... ..#

2.2 $ESCR%P&%ON O '()ORE*+%P'EN&S..................................................................

CHAPTE 3 C&NT&(

&PEAT"&N$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$%

3.1 -+RN%NSS&E' ..........................................................................................2

3.2 P+!ER%E$ CO(!PREP(R(&%ON ......................................................................33CHAPTE . PEPAAT"&N E'&E STATP $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$31

#.1 %NSPEC&%ON ON %E!$ E*+%P'EN&S ...................................... ...34

#.2 %NSPEC&%ON ON E!EC&R%C E*+%P'EN& ..............................................................#0

CHAPTE STATP AN*ST&P $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$.!

.1 S&(R&+P (N$ S&OPS OR -+RN%N SS&E'..................................................... ..#1

.2S&(R&+P (N$ S&OPS OR P+!ER%E$ CO(! PREP(R(&%ON SS&E' ........................5

CHAPTE 1 PECAT"&NS "N TEST N AN* P&*CT"&N $$$$$$$$$$$$$$$$$$$$$$$2%

4.1 PREC(+&%ONS O -+RN%N SS&E' %N &ES& R+N (N$ PRO$+C&%ON ........................2

4.2 PREC(+&%ONS %N &ES& R+N (N$ PRO$+C&%ON O P+!ER%E$ CO(! PREP(R(&%ON ..6


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Chapter 1 Introduction

Clin7er ma7in8 ran8e9 from ra: meal homo8eni;ation 9ilo eri;ed coal preparation 9y9tem, :hich incl=de9

proce99 flo:9 li7e 7iln inlet e?ha=9t 8a9 treatment, ra: meal homo8eni;ation 9ilodi9char8in8 :ei8hin8 and con>eyin8, 7iln inlet pre@heater 9y9tem, 7iln middle, 7iln

o=tlet, clin7er coolin8 and con>eyin8, clin7er 9ilo top, p=l>eri;ation coal preparation. %n

order to 9pecify de9i8n intent, :e :rite thi9 operatin8 9pecification


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Chapter 2 Process Flow and Equipments

2.1 Process flow

Ra: meal e?tracted from 9ilo >ia pne=matic air 9lide di9char8in8 9y9tem i9

di9char8ed to 9mall ertin8


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di9char8ed from ra: mill circ=latin8 fan. &he 8a9 9eparated ertin8


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air from fan penetrate 8rate plate9 and cool the clin7er. Each fan eA=ip9 electric

inlet >al>e, =9ed to adj=9t air >ol=me.

(fter cool clin7er, the hot 8a9 i9 emitted a9 Dhi8h temperat=re air （ 500 ～ 1100℃ ） enter9

7iln directly from 7iln hood to y oil, the hi8h

temperat=re air （ 00 ～ 500℃ ） from 7iln hood 9=pplie9 y oil, the re9t part enter9 ESP （ #31.EP2# ） at 7iln o=tlet to eyer （ #31$-.2 ）tran9ported to chain ia chain

con>eyer （ #31.C24 ） .$=9ty air on chain@eyer （ #31$-.2 ） i9 p=rified


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Got air in 7iln inlet :a9te 8a9 9er>e9 a9 dryin8 9o=rce for coal mill =nder control of main

e （ 321.'24 ） to

control the

temperat=re of 8a9 in/o=t mill 9o a9 to

en9=re the finene99 and moi9t=re of coal po:der.

or the 9a7e of 9afety and con9tancy of

p=l>eri;ed coal preparation, the 9y9tem eA=ip9

CO2 e?tin8=i9her to protect p=l9e


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&he ra: meal po:der o=t from the pre@heater of 7iln inlet 8oe9 into 7iln from the=pper end for f=rther calcination and clin7eri;ation.$=e to the inclination and t=rnin8of the 9hell, material :ill ta7e a all@aro=nd motion :hich mean9 that the material :illnot only roll alon8 the circ=mference direction e from =pper end to lo:erend, and contin=e decompo9in8 and clin7er formin8. (fter it t=rn9 into cement clin7erand then enter9 cooler from 7iln o=tlet.

=el i9 9prayed into the 7iln


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air >ol=me ：～ 200000m3/h

temperat=re ：～ 60℃

%$%$3 the third generation grate cooler

2.2.3.1 &echnical Performance

Main technical data of cooler

Main parameter of

cooler Technical data

Performance Main technical data

Type FCN 3300

Specifications 3.94x34.488 m

Capacity （ t/d ） 3300

Eecti!e area of "rate plate （ m# ） 88.8 m#

Clin$er temperat%re at cooler inlet

&'C(

)400

Clin$er temperat%re at cooler o%tlet *+'C, am-ient temperat%re

rate plate Section 3

ir cham-er *

rate plate stro$e &time/ min%te( 4#+

rate plate stro$e &mm ） )30

Technical data

Performance Main technical data

Capacity （ t/d ） 3300

Tertiary air temperat%re （ C ） 900

Clin$er temperat%re

at $iln o%tlet （C ）

)400

Material thic$ness &mm ） 400 ～

*00


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2.2.3.2 :or7in8 principle and con9tr=ction feat=re9

&he 8rate cooler i9 the third 8eneration prod=ced


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e>en and =p:ard airflo: in the clin7er clearance. &he fl=idi;ation fine9 then i9


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&he 8rate cooler adopt9 centrali;ed l=ariaice

>er9a.'aintainin8 a 9taice9.

（ 1 ） Each air chamice, :hich i9 =9ed to comprehend the :or7in8 9it=ation of the 8rate plate andmaterial layer.

（ 2 ） temperat=re mea9=rement and alarmin8 de>ice9 at 8rate plate in chamer the material layer

9tate.

（ # ） (larm and the control for airloc7 >al>e of material lea7a8e in air

chamice for r=pt=re of chain con>eyorBfor material lea7a8e

（ 4 ） Re8=lar protection on o>erloaded motor, in9pection and alarm on fan.%$%$. ertical coal mill

2.2.#.1 technical performance

2.2.#.1.1 modelD 'P151

9pec of roll ： dia.100mm,

"idthD30mm

Aty. ： 3

thro=8hp=t ： 2t/h


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feedin8 9i;e ：≤ 0mm

coal po:der finene99 ： 0.060mm 6 ～ 10 9A=are 9creen 9ie>e

re9id=e moi9t=re ： the fed≤16 ； the di9char8ed ＜ 0.

re> of ta30r/min

>olt.D3602.2.#.1.# oil 9tation

oil 9tation of main red=cerD

nominal flo: ： 200

!/min


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nominal pre99=re ： 0.# 'Pa

oil 9=pply temp.D#0±3 ℃

con9=mption of coolin8 :ater ： 16

m3/h

temp.of coolin8 :ater ：≤ 32℃

:ater pre99=reD0.2'Pa

hydra=lic loadin8 9tation

flo:D16!/min

oil pre99=reD20'Pa

effecti>e c=al>e hydra=lic 9tation

flo: of coolin8 :ater ： 40 !/'in

temp.of coolin8 :ater ：≤ 33℃

:ater pre99=reD0.2 ～ 0.#'Pa

2.2.#.2 Con9tr=ction and :or7in8 principle of coal

'P151 >ertical coal mill i9 compo9ed of tae, ca9in8 and hydra=lic 9tation. Ra: coal thro=8h middle feedin8 do:n pipe come9

to the center of rotatin8 ta


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Operation ControlChapter 3

&hi9 chapter incl=de9 eri;ed coal preparation in


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O2 ： 0 ～4 ％

O2 ： 0 ～# ％

No . EA=ipment No. 'ea9=rin8 point Control

temperat=re of oil at o=tlet of hydra=lic

co=pler of hi8h temperat=re fan

'onitorin8

321.N15'01

motor c=rrent of hi8htemperat=re fan

监视 monitorin8

temperat=re of motor


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9:itch >al>e331.S*13

rotary 7iln

No .

EA=ipment No. 'ea9=rin8 point

Control

parameter

&emperat=reof 8a9 at o=tlet of FS calciner

60 ～ 500℃

Ne8ati>epre99=re of 8a9 at o=tlet of FS calciner

1000 ～ 3000Pa

&emperat=re of 8a9in 7iln inlet 9oot chame pre99=re of 8a9 in 7iln inlet 9oot chamator to 7iln 'onitorin8

material le>el 9:itch ofele>ator

'onitorin8

10 331.'0 ～

331.'

control of aeration tohomo8eni;ation

Control

11331.S*06 ～

location of pne=matic Re8=lation

openin8 of electrical flo:

>al>e0 ～ 100 ％

12 331.-14:ei8ht of e

Re8=lation

openin8 of electrical flo:>al>e

0 ～ 100 ％

1# 331.'21/331.'22 impact flo: meter 30 ～ 20t/h

1 #21.F!01

re> of rotary 7iln0.35 ～ 3.5#6r/min=p@do:n mo>in8

limit of rotary 7iln监视 monitorin8

temperat=re of 9hell ofrotary 7iln

＜ 30℃

-earin8

temperat=re of idler Ⅰ at hot end of ＜ 11℃

-earin8

temperat=re of idler Ⅱ at hot end of

rotary 7iln

＜ 11℃

-earin8

temperat=re of idlerⅢ

at hot end of rotary 7iln

＜ 11℃

14 #21.F!01.'01

c=rrent of main motorof rotary 7iln

'onitorin8

temperat=re of


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No .


Control

parameter

16 #21.F!01<thin oil 9tation of main red=cer of rotary 7iln

'onitorin8

15 #21.F!01coil 9tation of

hydra=lic thr=9t roller of rotary 7iln'onitorin8

20 #21.&$05 temperat=re of tertiary air 00 ～ 500℃tertiary ne8ati>e pre99=re100 ～ 600Pa

21 #21.P10Openin8 of hi8htemperat=re 8ate >al>e

0 ～ 100 ％

22 #31FS.01

ne8ati>e pre99=re of 7ilnGood

@100 ～ 100Pa

temperat=re 7iln hood600 ～ 1100℃

temperat=re of 9econdaryair to 7iln

500 ～ 1100℃

& for :atchin8 fire at 7ilnO=tlet

'onitorin8

7iln o=tlet emotor at 9econd 9ection of 8rate cooler

'onitorin8

freA=ency control of third 9ection of 8rate cooler

0 ～ 100 ％

c=rrent of dri>emotor at third 9ection of 8rate cooler

'onitorin8

&emperat=re of left 9ide of fir9t 9ection

of 8rate cooler ＜ 230℃

temperat=re of ri8ht 9ide of fir9t 9ection of 8rate cooler

＜ 230℃

monitorin8 & of 8rateCooler

'onitorin8

pre99=re =nder 8rate9 of fir9t cham


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No .


Control

parameter

pre99=re =nder 8rate9 of fifth chamal>e of

an0 ～ 100 ％

motor c=rrent of fan monitorin8

26 #31.N11

inlet flo:of fir9t chamal>e of

an0 ～ 100 ％


o=tlet pre99=re of fan0 ～ 12000Pa

25 #31.N12

inlet flo:

of fir9t chamal>e of an

0 ～ 100 ％



30 #31.N13

inlet flo:


0 ～ 100 ％


o=tlet pre99=re of fan 0 ～ 11000Pa

31 #31.N1#

inlet flo:


0 ～ 100 ％




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No . EA=ipment No. 'ea9=rin8 point

Control

parameter

32 #31.N1

inlet flo:

of 9econd chamal>e of an

0 ～ 100 ％



33 #31.N14

inlet flo:


0 ～ 100 ％



3# #31.N1

inlet flo:


0 ～ 100 ％



3 #31.N16

inlet flo:


0 ～ 100 ％



34 31.N15

inlet flo: of third

chamal>e of an

0 ～ 100 ％

motor c=rrent of fan 'onitorin8

3 #31.N20

inlet flo: of fo=rthchamal>e of an

0 ～ 100 ％


36 #31.N21

inlet flo: of fifthchamal>e of

an

0 ～ 100 ％

freA=ency control of fan0 ～ 100 ％


35 #31.N22

inlet flo: of 9i?thchamal>e of an

0 ～ 100 ％

freA=ency control of fan0 ～ 100 ％



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No . EA=ipment No. 'ea9=rin8 point Control

#0temperat=re after:ind

of 8rate cooler 0 ～ 00℃

#1 #31.-23openin8 of electrical coldal>e

0 ～ 100 ％

#2 #31.EP2#

inlet temperat=reof EP at 7iln o=tlet ＜ 20℃

inlet pre99=re of EP at 7iln o=tlet

@1400Pa ～ 0

>olta8e of electric field at 7iln o=tlet EP 1

monitorin8

c=rrent of electric field at 7iln o=tlet EP 1

monitorin8

>olta8e of electric field at 7iln o=tlet EP 2

monitorin8


monitorin8

>olta8e of

electric field at 7iln o=tlet EP 3

monitorin8


monitorin8

>olta8e of electric field at 7iln o=tlet EP #

monitorin8

c=rrent of electric field at 7iln o=tlet EP #

monitorin8

O=tlettemperat=re of 7iln o=tlet EP

＜ 10℃

o=tlet pre99=reof 7iln o=tlet EP

@1600Pa ～ 0

#3 #31.N2

temperat=re of

main ial>e of 7iln o=tlet fan0 ～ 100 ％

# #31.N2'01

motor c=rrent of7iln o=tlet fan

monitorin8

temperat=re of motor


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NoteD the operatin8 parameter9 9ho=ld e of e?ha=9t

fan （ #31.N2 ） at 7iln o=tlet accordin8 to ne8ati>e pre99=re of 7iln

o=tlet

（ # ） (=tomatically re8=late the openin8 of coal e （ #31.-23 ） accordin8 to

temperat=re of air at inlet of 7iln o=tlet

EP （ #31.EP2# ） .（） (=tomatically re8=late the openin8 of >al>e9 at air inlet of fan accordin8 to theair >ol=me at inlet of coolin8 fan at each chamal>e of the # mea9=rin8 point9Bair pre99=re of aerated eyin8 coal at Calciner

0 ～ 0000Pa

3!21.-!2/!21.-!24/

!21.-!2

c=rrent of root9 fan monitorin8


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3 321.CS26 旋风收尘器进风口气体温度 inlet 8a9 temp0 ～ #00℃

旋风收尘器出风口气体温度 o=tlet 8a9

temp0 ～ 30℃

旋风收尘器出风口气体压力 o=tlet 8a9

pre99=re0 ～ @1600Pa

# !21."02/!21."03do9in8 feeder feedin8

(mo=nt0 ～ 40t/h

!21.R'04

ne8ati>e pre99=re of 8a9at coal mill inlet

0 ～ @2000Pa

temperat=re of 8a9 atcoal mill inlet

0 ～ 320℃

ne8ati>e pre99=re of 8a9at coal mill o=tlet

0 ～ @6000Pa

temperat=re of 8a9 atcoal mill o=tlet

0 ～ 60℃

pre99=re differenceof 8a9 at inlet and o=tlet of coal mill

000 Pa

>i of 9eparator Re8=lation

5 !21.R'04.-01temperat=re of


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NoteD the operation record 9hall


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Chapter 4 Preparations before Startup

(ll eA=ipment9 in


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#.1. %n9pect the ma9onry 9tate of refractory,and then confirm and clear the te9t holeto

en9=re it =ne =nder coal

po:der :ei8ht@lo99 9ilo 9ho=ld al>e

a 、 (ll the man=al >al>e9 9ho=ld al>e 9haft and lin7a8e, after that, ta7e a remote control

on it, ma7e 9=re the open@clo9e direction on9ite i9 in accordance :ith that of

control room, and the acc=racy of openin8 and indication. %f there i9 a =pper

limitor lo:er limit on the 9:itch, the chec7 of limit 9i8nal ret=rn :ith control room i9

needed.

#.1.6 %n9pection on coolin8 :ater and compre99ed air 9y9tem

%t i9 >ery important to e?amine the coolin8@do:n :ater and compre99ed air

9y9tem

al>e and pa99a8e of compre99ed air employed for the in9tr=ment9 and

the in8 part9 9hall


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ire@i8htin8 %n9pection 'an=al and the man=al pro>ided


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Startup and StopChapter 5

&hi9 chapter introd=ce9 the preca=tion9, tro=


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temperat=re ri9e c=r>e for ne: 7iln

2eatin" %p

c%r!etem

升

C=r>e for


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temperat=re ri9e and 7iln r=nnin8 of rotary 7iln

NoteD&he time of 9lo:@t=rnin8 m=9t


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.1.1.2 firin8 and temperat=re ri9e

.1.1.2.1 Start=p fan 321N33Bfire for the fir9t time 9hall open 2 ～ 3 in9pection hole9

of

pre@heater, and then 8et the time to 9tart fan321N33 accordin8 to 7iln


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condition9 in 7iln are eli8iapor on ca9tin8 hole at the top of preheater.

'ethodD p=t 8la99 piece at e?ha=9t hole to 9ee if there i9 coa8=lation of >apor.


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.1.3.1 Start =p the e the 9:itchin8 9i8nal and notice from in9pector, 9et

7iln

9peed at 0.# ～ 0.r/min, and 9tart =p the main motor of 7iln.

.1.3.# =arantee the inlet ne8ati>e pre99=re thro=8hre8=latin8 the re> of hi8h

temperat=re fan and openin8 of ol=me

and :iden

the openin8 of e pre99=re, re8=late the air >ol=me of

each cham


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calcination rate of ra: meal into 7iln ：3 50

inlet temp. B321N15 hi8h temp.fanD ＜ 30℃ 7iln c=rrentD #00 ～0(C1 O=tlet ne8ati>e pre99=re ： @000 Pa 7iln 9hell temp.D ＜ 30℃

Filn e pre99=reD @20 ～ @0Pa

&ertiary air temp.D 3 60℃

#31CC04 pre99=re =nder 8rate9 of fir9t chame pre99=re of conic 9ection@1300 Pa

#31N2 inlet temp.D 200 ～ 20℃

$!$ stop of 6iln

00 Patemp.of ch=teD 60 ～

60℃

.1..1 Stop of 7iln d=e to plan or lon8 time maintenace

.1..1.1 (fter recei>e notice of 9top, e9timate the coal po:der amo=nt tfor the t:ocoal po:der


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o=rth ho=rD t=rn once e>ery 30min=te

ifth QEi8hth ho=rD t=rn once e>ery #0min=te

(fter Ei8hth ho=rD t=rn once e>ery 40m

Stop the 7iln :hen e9 7iln at 50

de8ree e>ery time. %n rainy day, hot 7iln 9hall 7eep r=nnin8.

.1..1.1# Stop coolin8 fan for 7iln ridin8 rin8 and 7iln o=tlet coolin8 fan.

.1..1.1 -efore 9top of 7iln and after 9top of f=rnace, :hen c=t feedin8

to

7iln, accordin8ly red=ce air in coolin8 fan chame.

.1..2.3 Stop main motor, 9:itch in and 9lo:ly r=n a9 per re8=lation9.

.1..2.# %n9pect pre@heater and do Je heat of 9y9tem, prepare to feed material at any time.

$!$1 &rdinary fail#res and disposals.1.4.1 operation on trip of hi8h temperat=re fan

.1.4.1.1 Re8=late e pre99=re.

.1.4.1.2 Stop 7iln feed, f=rnace and coal feedin8. Red=ce coal feed to 7iln o=tlet. %f

maintenance time i9 a little lon8er, 9top main motor of 7iln and inform 9ite operator to

t=rn the 7iln a9 per re8=lation9.

.1.4.1.3 %nform in9pector to chec7 the pre@heater to pre>ent feedin8 do:n pipe from ol=me for 9y9tem, properly :iden


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.1.4.3 Operation on 9top of clin7er con>eyin8 and reco>er er9 in m.

.1.4.3.2 %f it :o=ld reco>er in 1m, con9ider 9lo:

do:n 7iln, c=t do:n material

and air >ol=me, properly 9lo: do:n fir9t and 9econd 8rate

ol=me

and notice the chan8e of c=rrent and pre99=re, a>oid H9no:

manI occ=r in front of fir9t

9ection.

.1.4.3.3 %f it :o=ld reco>er more than 1m,c=rrent and pre99=re of fir9t and 9econd 9ection

are too hi8h :hile fail=re9 canKt ery

(fter repair, 9tart =p clin7er con>eyin8 8ro=p, notice the 9peed of third 8rate

ent cr=9her and con>eyer from trip and 9top.

.1.4.# =ner in 9hort time, c=t.1.4..2

do:n feedin8 and coal, 9lo: do:n 7iln, 9peed =p 8rate ol=me of

re9t fan9.

.1.4..3 (ny fan at third 9ection trip9 to 9top, if it :o=ld not reco>er in 9hort time, c=t

do:n feedin8 and coal, 9lo: do:n 7iln, 9peed =p 8rate ol=me of

re9t fan9.

.1.4.4


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.1.4..1.# %nform 9ite operator to in9pect the rela>ant eA=ipmentBpreheater and 9ol>ethe proi9ion

1 $o preparation :or7

2 'a7e 9=re there i9material 9tored in


38/59


anti@e?plo9ion p=mp of

'a7e 9=re anti@e?plo9ion


39/59


e pre99=re 6000Pa

13 preheatin8 of mill

Control the >al>e99lo:ly, let mill o=tletair and e f=lly

（ !21.-&36 、 321.'2 ）

（ 2 ） rad=ally open main fan

inlet >al>e

（ !21.N12a ）

（ 3

）

Slo:ly narro: cold al>e

（ 321.'24 ）

（#

）

（ !21.-C0# ）

Start =p eyer （ !21.-C0# ）

（ 1 ） Notice the

temperat=re of hot air into mill

（ 2 ） !et 8a9 o=t mill ri9e to 4 ～ ℃

（ 3 ） Control ne8ati>e pre99=re of air lea>in8

mill in

@00@000Pa.

1# (fter Pre@heatin8, i oilp=mo of main red=cer

1 9tart =p coal

mill con>eyin8 9y9tem

B1 9tart =p feedin8 eyer （ !21."02 or!21."03 ）B2 Set feedin8 amo=nt

B3 9tart =p fan （ !21.N32 ）

B# 9tart =p hi8h

concentration anti e?plo9ionp=l9e

&imely re8=late feedin8 accordin8 to material

in9ide mill

16 impro>e o=tp=tStaal>e, openin8

of mill inlet

cold al>e

reach reA=ired o=tp=t

（ 1 ） (ir left from mill ri9e9 to 4 ～ ℃

（ 2 ） Control the ne8ati>e pre99=re of air left

（ 3 ） Prod=ct A=ality conform9 to de9i8n.15 9ta


40/59


.2.# %n9pection and re>i9ion in p=l>eri;ed coal preparation 9y9tem r=nnin8

Re8=larly in9pect the chan8e of all mea9=rin8 point9 and notice the r=nnin8 9tat=9.

&a7e proper and effecti>e mea9=re9 to deal proi9ion

>al=e i9 normal.

:iden cold al>e

:iden cold al>e

口;（ !21.N12a ）。

open#n!

No. $e9cription %n9pection )=d8e &reatment

1

o>er feedin8 to

mill

（ 1 ） &he inlet and o=tlet 9=<

pre99=re of mill i9 o>erpre99=re

（ 2 ） 'ill i9 o>er c=rrent

（ 3 ） 'ain 8ear

erheat

（ # ） Gi8h >iel of oil

tan7, oil p=mp

Ne8ati>e

pre99=re of

er hi8h

(cc=m=lation at pipe9（ 1 ） Narro: fan inlet >al>e

%nform 9ite operator to di9po9e it


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.2.#.1 9afety in9pection in r=nnin8

.2.#.1.1coal mill

(. Coal mill o=tlet air temperat=re 9hall 7eep at 0 ～ ℃, not e?ceed

60℃.

-. Notice finene99 of coal po:er, red=ce o>er 8rindin8.

C. "hen coal feedin8 i9 o>er hi8h or o>er lo:, clo9ely monitorthe operatin8 parameter9 in ca9e of accident9.

$. %n9pect at inter>al9 and pay attention to the free of ch=te..2.#.1.2 Other eA=ipment9,


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d=9t collector.

con>eyer （ !21.SC1# 、 !21.SC1） .

mill

.2..1 %n9pection of 9afety eyer.

< 、 %f it :o=ld 9top o>er 3 day9, the coal po:der


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9h=t@do:n, mill and eri;ed coalpreparation

"hen there are emer8encie9 li7e motor trippin8, 9=dden c=t@off ra: coal

9=pply,

jammin8, o>er@heated p=l>eri;ed coal 9ilo or d=9t


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>i


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>al>e !21.'06 at coal mill o=tlet.

>al>e into the >al>e, and open cold

operatin8 parameter9

CO2 into the al>e !21.-&36,andpne=matic

（ 3 ） E?tin8=i9h CO2 to mill.

4

B!21.N12 ） al>e in the mill, to 7no: do:n the

8a9 temperat=re enterin8 the mill

Stop other eA=ipment9 in

9top 9eA=ence of fan.

（ !21.SC1# 、 !21.SC1

） 9cre: con>eyor for

p=l>eri;ed coal

motor trip（ 1 ） &he =p part rotary do:n

feeder interloc7ed 9top9, inform 9iteoperator to di9po9e it. %f it co=ld not9tart =p in m, 9top the mill.

B2 &imely re8=late the

6

（ !21.-10 ）

(nti e?plo9ion al>e into the mill, to cooldo:n the temperat=re

B2P=t the coal mill 9y9tem to an

emer8ency 9h=t@do:n :hen a fire i99potted, clo9e =p the inlet >al>e

（ !21.'06 ） of


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（ 2 ） CO content 7eep9 climeri;ed coal !ea7in8

p=l>eri;ed coal from

it9 9ilo

（ 1 ）

p=l>eri;ed

coal 9ilo i9 fed =nder

po9iti>e pre99=re

（ 2 ） 9om

e

coal

e?plode to

deform the

flan8e9 and

9o on

（ 3 ） Coal

po:der fill9 the eat the9ilotop,and:heth

er the>al>eplatei9al>e9

E?plo9ion proof >al>e plate

eri;edcoal lea7a8e ore?plo9i>e

i9itatorial

（ 1 Coal mill

9y9tem come9 to an emer8ency

9h=t@do:n

（ 2 ） Cleanin8 a:ay the

e9caped

p=l>eri;ed coal


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mill and eri;ed coal 9ilo

and the temperat=re of the


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Chapter 6 Precautions in test run and normal production

&hi9 chapter introd=ce9 the fail=re9 and di9po9al9 of eri;ed

coal preparation 9y9tem in te9t r=n and prod=ction.

6.1 Precautions of burning system in test run and production4.1.1 Sched=le and p=rpo9e

4.1.1.1 Sched=le

(fter all the eA=ipment are in9talled a9 :ell a9 9in8le machine trial r=nnin8 and lin7a8e

trial r=nnin8 are fini9hed, chec7 all the eA=ipment thoro=8hly, then carry o=t the trial

prod=ction after confirmation.

4.1.1.2 p=rpo9e

+nload r=nnin8

i9 >ery important

for r=nnin8@in ofthe oid

the follo:in8

fail=re9 d=rin8

feed and trial

proce99, a

thoro=8h

e?amination

m=9t


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B:itho=t eA=ipment i9 permitted.ir9tly, 9hift the 9:itch from local control to room

control, and then PC dri>e the eA=ipment comp=l9i>ely and 9top machine on9ite.

$=rin8 the proce99, chec7 the follo:in8 point9D

(. 9i8nal ready

-. dri>e de>ice9 :hether correct or not

C. re9pon9e 9i8nal

$. fa=lt alarm

E. corre9pondence to motor indication

4.1.2.3.2 interloc7in8 te9t r=n

(fter te9t r=n on 9in8leeA=ipment, interloc7in8 te9tr=n 9hall ide the mo9t definite information 9o a9 to

comprehend the calcinin8 9tate :hether or not normal. See the follo:in8 item9 from

c=rrent.

a 、 +nder normal r=nnin8 9tate, a certain feedin8 amo=nt :ill let the c=rrent 7eep a

certain ran8e and 9ta


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4.1.2.#.2.1 ail=re pre>ention

(9 the 7iln 9top9, thoro=8hly chec7 :ill pre>ent mechanical fail=re. %n9pect and record

r=nnin8 9tate of mechani9m d=rin8 operation.

4.1.2.#.2.2 9ta


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ch=te, j=d8e the


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%t infl=ence9 the heat con9=mption directly. Re8=late it accordin8 to the clin7er tar8et

>al=e.

&he O2 at C1 e?it,calciner e?it and 7iln inlet

(ccordin8 to 8a9 analy9i9 meter to analy;e O2 C1 o=tlet, al9o re8=larly analy;e O2

at calciner o=tlet and 7iln inlet, :hich help to find o=t the ol=me to maintain the


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-, (ccretion9 and fillin8 rate in 7iln

4.1.2..# &he mea9=rement of O2 and CO i9 helpf=l in char8e of the calcination

9tate in the 7iln and calciner a9 :ell a9 the air and f=el =9ed to calcine.

Chemical analy9i9 >al=e, liter :ei8ht, f@CaO of clin7er 4.1.2..

&he ae >al=e9 may help to comprehend the r=nnin8 9tat=9, and then j=d8e,

re8=late.

4.1.2.4 operational 8i9t in operation

ood command of the control9 parameter i9 helpf=l to 9taailaationD ra: meal component9 chan8e, 7iln cr=9t fall off 8reatly.

< 、 (eration >ol=me i9 in9=fficientD it i9 hard to reco>er in 9hort time :hen the f=el

canKt ol=me :hen f=el A=antity chan8e9.

4.1.2.4.# re8=lation on re> of rotary 7iln

a 、 "hen the calcination9 :or9en, lo:er the rotation 9peed of rotary 7iln,


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reach the


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c 9tae of 7iln o=tlet fan

4.1.2..3.3 Con9ideration9

aCon9ider O2 content at 7iln o=tlet and 8a9 temperat=re

< con9ider the 8a9 temperat=re and pre99=re at primary cylindero=tlet

cBCon9ider the 8a9 temperat=re and pre99=re in

calciner

dBon9ide the 9hell 9=rface temperat=re

e ,Con9ider the e?ha=9t 8a9 A=antity of 8rate cooler

f ,Con9ider e?ha=9t 8a9 proce99 and d=9t collectin8 9y9tem

1$% Preca#tions in Test #n andProd#ction of P#l4eri5ed coalpreparation

Cond=ct the follo:in8 i9 a m=9t after caref=l and thoro=8h in9pection on all

eA=ipment9.

4.2.1 fillin8 of l=


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d 、 fail=re alarm

e 、 motor corre9pondin8 to the

direction

4.2.3.2 interloc7in8 te9t r=n

(fter the 9in8le commi99ionin8, the interloc7in8 commi99ionin8 can 9tart, :hich

i9 controlled and p=t into e99ential te9t9


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&he prod=ct finene99 can ent coal po:der from e9capin8, all the eA=ipment r=n9 =nder ;eropre99=re or ne8ati>e pre99=re a9 de9i8ned. (nd the machine 9ho=ld eri;ed coal e9cape9 accidently or i9

ta7en

o=t d=rin8 the 9amplin8. No p=l>eri;ed coal acc=m=lated in the eA=ipment.

< 、 Po99ioid mechanical impact and friction, 9o a9 to pre>ent from fire

and e?plo9ion.

c 、 CO2 fire e?tin8=i9her i9 de9i8ned to pre>ent fire and e?plo9ion in the

p=l>eri;ed coal 9ilo and eri;ed

coal 9ilo or eri;ed coalin

the 9ilo or eri;ed coal remain9 in the eA=ipment for more

than 3 day9, let in CO2.

d 、 &here i9 e?plo9ion proof >al>e 9et on the eri;ed coal

9ilo. "hen the pre99=re in the eA=ipment climal>e plate of e?plo9ion proof >al>e 8o ent the eA=ipment form dama8in8.

e 、 &he proce99 d=ct9 or d=9t collectin8 pipe9 are inclined :ith hi8h air 9peed to

a>oid d=9t 9ettlement at 9ome de8ree. "e 9et heat pre9er>ation coatin8 at

e?ternal :all of pipe :hich a>oid9 conden9ation of moi9t=re and pre>ent9from

d=9t adhe9ion in9ide pipe9.

f 、 &he connectin8 9lide9 eri;ed coal from acc=m=latin8 in the 9lide9.

4.2..2 9afety preca=tion9 of eA=ipment9

a 、 Coal millD a9 for the >aryin8 coal feedin8 for the calcinin8 9y9tem,

the

con9tant feeder can e

a9 de9i8ned, :hich can control the air temperat=re at mill inlet. +nder

any

circ=m9tance9, temperat=re of air into the mill 9ho=ld


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c 、 P=l>eri;ed coal 9iloD the pre99=re 9en9or 9et in the p=l>eri;ed coal 9ilo can directly

indicate the :ei8ht. &he p=l>eri;ed coal 9ho=ld ery 2 ho=r9 and 9tic7 to in9pection e>en if the eA=ipment 9top9, pay

attention to follo:in8 item9D

（ a :hether there i9 lea7in8 coal or p=l>eri;ed coal

（ < ） :hether there i9 fire in the 9hop

（ c ） Clean the 9hop and :hether the p=l>eri;ed coal acc=m=late9

（ d ） :hether the eA=ipment eyor and the ho=9in8 and ae plate of e?plo9ion@proof >al>e i9 ent e?plo9ion d=rin8 the 9tart@=p,


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"hen any fire 9par7 i9 9potted in the p=l>eri;ed coal 9ilo or ier ca9=alty.

4.2..1 fire in p=l>eri;ed coal9ilo

a 、 Stop coal feedin8 to the p=l>eri;ed coal 9ilo.

< 、 Stop the tran9portation eA=ipment at the 9ilo o=tlet, and clo9e =p the

9cre:

>al>e 8ate at the 9ilo

Documents

Volume 3 Burning Workshop