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FT TP EK RN

00B 01/03/02 Issued for Design FT TP EK RN

Confidential Bectel Cor!oration 2001" Tis ite# contains confidential infor#ation

 !ro!rietar$ to Bectel Cor!oration tat is not to %e used& disclosed& or re!roduced in an$

for#at %$ an$ non'Bectel !art$ (itout Bectel)s !rior !er#ission" Not (itstanding

te a%o*e& E+,I-. /er*ices C as te rigt to use te infor#ation contained in tis

docu#ent !ursuant to Contract 23 %et(een Bectel Cor!oration and E+,I-.

/er*ices C"

 N4TICE

COMPLEX LOOP

NO. DATE REVISION BY CK’D

11/02/01  Issued For .!!ro*al00.

EGS APE

 FT TP EK RN

54B N4"6 23'300 C.E6 N4NE

 N,7BER .I8NED D.TE

.ND TR.CIN8

REC4RD ENTERED

53'5D'00031 000

Page 1 of 9

COMPLEX LOOP DESCRIPTION

FC0155_CC / FI0155_CC / FC5323_CC /FY0155A_CC / FY0155B_CC /

HY0155_CC / LC0196_CC

PV-8100 CD Hydro NAPHTHA SPLITTER INTERNAL REFLUX FLOW

.'9:'0001

000 Issued .s Config01/0;/03

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8 PR45ECT < N4RC4 REFININ8

300'53'5D'00031

INTERN. REF,:

C-

ee Note 2"C- = :2 > ?1 @ ?C P / λA > ∆TA& ee Note 1"

:1

:2

A: LOOP DIAGRAM

P-'100

CDDR4

 N.PT.

PITTER 

  F01.CC

  FC323CC

FC

T4 CN

PR4D,CT

P P'102/103

FN  323CC

  FC01CC

F4

P

FN

 01CC

P-'10

REF,: DR,7

  F01BCC

:2

N

01;CC  C 01;CC

  TI

 020CC

  TI

019CC

C-

-.,E

?ET B 4PER.T4RA

 N4TE 16

T  I TE DIFFERENCE BETGEEN TI019CC .ND TI020CC&  B,T F4R PR.CTIC. P,RP4E IT I .,7ED T4 BE . C4NT.NT"

:

?: < A

 

01CC

 N4TE 26C.C,.T4R ?F01./BCCA 4N PHID E'9.'00;3 REPREENT TE F,NCTI4N INIDE TE D4TTED

INE"

E'9233./B

E'10

  :

T4 N.PT.

PITTER FEEDDR,7

4B .RE.

  FI01CC

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COMPLEX LOOP DESCRIPTION8 PR45ECT < N4RC4 REFININ8

B: PROCESS CONTRL FUNCTIONAL DESCRIPTION

 

44P6 FC01CC/FI01CC/F01.CC/F01BCC/FC323CC/

  01CC/ C01;CC

  P-'100 CD Hydro N.PT. PITTERInternal Reflu Flo( Control

  Reference6 PHID Dra(ing No" E'9.'00;3  E'9.'00;9 /E'9.'0191

  E'3.'03 / E'3.'02; ?4BA

Te !ur!ose of tis co#!le loo! is to control te ligt gasoline !roduct sidedra( and reflu flo( to

acie*e a constant internal reflu rate in te catal$st %eds" Te o!erator is gi*en te flei%ilit$ to set te

desired internal reflu J at su%tractor& F01BCC *ia 01CC %$ resetting te set!oint"

Te reLuired controls and calculations are gi*en in te follo(ing section& ection C& in detail"

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COMPLEX LOOP DESCRIPTION8 PR45ECT < N4RC4 REFININ8

C: INSTRUMENTATION FUNCTIONAL DESCRIPTION

  44P6 FC01CC/FI01CC/F01.CC/F01BCC/FC323CC/

  01CC/C01;CC

  P-'100 CD Hydro N.PT. PITTERInternal Reflu Flo( Control

Te follo(ing discussion !ro*ides additional infor#ation reLuired for !oint configuration"

LC01!"CC

C01;CC is a standard PID controller (it te follo(ing ece!tions6

1A P-TR.CK is set to N4TR.CK"2A CTE+N is set to ELC"

FC01##"CC

FC01CC is a standard PID controller nor#all$ set in C. #ode recei*ing its set!oint in!ut fro#

C01;CC"

FI01##"CC

FI01CC is a standard RegP* slot (it Data.cL algorit#& (ic dis!la$s te calculated internalreflu& te C- of F01.CC"

FY01##A"CC

F01.CC !erfor#s a calculating function& i"e"& te internal reflu of te CD Hydro  colu#n" .

regulator$ control %locM& 7ulDi*& is used to Mee! te integrit$ of te co#!le control loo!" Detailed

calculation is discussed %elo(6

Te internal reflu is calculated %ased on te ental!$ %alance as follo(s&

F01.CC"C- = FN01CC"P- > 1 @ ?C ! / λA > ∆TAO

Gere&

F01.CC"C- = Internal reflu #ass flo( rate in !asteuriation section

FN01CC"P- = Eternal reflu #ass flo( rate

C ! = eat ca!acit$

λ = atent eat of *a!oriation

∆T = Te#!erature difference %et(een side dra(& TI019CC"P-& and eternal reflu& TI020CC"P-"

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Te *alue of te ratio ?C ! / λA %ased on te CDTEC co#!uter si#ulated %acM calculation #a$ %e

a!!roi#ated %$ a constant& i" e"& 0"003"

Fro# te sa#e si#ulation& it (as found tat te !ercent *ariation in ∆T due to canges in side dra( and

eternal reflu te#!erature is generall$ s#all" Based on te result of te si#ulation& it gi*es&

∆T = 22 < 130 = Deg F

Git tese si#!lifications& te a%o*e eLuation can %e reduced to te follo(ing&

F01.CC"C- = ?FN01CC"P-A > 1 @ 0"003 > O = ?FN01CC"P-A > ?1"322A

,sing EL" .& RegCtl 7ulDi* .lgorit#& (e a*e

C- = K > ?K1 > :1 @ B1A > ?K2 > :2 @ B2A @ B

Gere&

K = 1"0& B = 0"0&

K1 = 0"0& B1 = 1"322&K2 = 1"0& B2 = 0"0"

Tis final eLuation (ill %e used to configure te DC %locM" o(e*er& it is re#inded tat if during

start'u! or nor#al o!eration e!erience indicates oter(ise& te a!!roi#ated constant& 1"322& sould %e adQusted accordingl$"

FY01##B"CC

F01BCC is a su%tractor" For te sa#e Qustification& a ,77ER regulator$ control %locM is used"

Tis DC %locM calculates te internal reflu rate %elo( te side dra( tra$ %$ te follo(ing eLuation&

F01BCC"C- = :2 < :1 = et !oint to FC323CC"

Gere&

 :2 = F01.CC"C- = ?FN01CC"P-A > ?1"322A

 :1 = 4!erator 7anual et -alue fro# 01CC& %ut #ust %e greater tan 7IN"

FC#$%$"CC

FC323CC is a standard PID controller nor#all$ set in C. #ode recei*ing its set!oint fro#

F01BCC"

HY01##"CC

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COMPLEX LOOP DESCRIPTION8 PR45ECT < N4RC4 REFININ8

01CC is a standard PID controller set in .uto #ode" Te o!erator uses te set!oint !ara#eter of

tis controller to adQust te reLuired J *alue" Te range of te PacMed Bed Getting rate is I7ITED %et(een 2"; 7BB/D and ;" 7BB/D" Te nor#al rating is %eing set at 2"9 7BB/D

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COMPLEX LOOP DESCRIPTION8 PR45ECT < N4RC4 REFININ8

D: LOGIC SLOT DIAGRAM

Tis co#!le loo! does not reLuire ogic lot Diagra#"

300'53'5D'00031