P. 1



# OAR Box 1784 Prepped by Ollie Stewart



### Document

Number: 

# 50 ) ll-B-9
Docket Number: 

# A--84-4 4

Printed 10/31/20088:05:40AM

Sheet 50of 143P. 2
^UNITE D STATE S ENVIRONMENTA L PROTECTIO N AGENC Y


### 2 2 JA N 198 6

:***.. 

### MEMORANDUM :s * .-._•- ' 

### SUBJECT : Tri pRepor t - Plan t Visi t t o th e Tennec o 01 1 Refiner y Chalmette , Louisian a (ESE D#83/03 ) FROM : Willia m

Larr y Elmore , P.E.Y ^ Standard s Documentatio nSection , ISB , ESE D(MD-13 ) TO : Kennet hR . Durkee , Chie f

Standard s Documentatio nSection , ISB , ESE D(MD-13 ) ' ""I . Subject : MM " '

- ^-'- .'•" * • ~: A",''•"•' A"'
. A plan t surve y

wa s conducte da t th e refiner y servin g Tennec o Oi l Processin g andMarketing . II . Plac e andDate : Tennec o 01 1 Processin g andMarketin g A Tennec o Company P.O . Bo x100 7 Chalmette , Louisian a ' . Octobe r 24 , 1985 . III . Attendees : Um . Larr y Elmore , P.E . Larr y McDouga l F.R . (Bob ) Slene r Dais y K . Won g ...

. .,. , Joh nEdmund s ^ T Environmenta l Engineer , U.S . EP A Refiner y Environmentalist , Tennec o Oi l Refiner y Environmentalist , Tennec o 01 1 Proces s Engineer , Tenneco , Oi l Technica l Superintendent , Tennec o Oi l

.V-vt ' yA''.'.: :: ":A^.'

:_.-;•. . •%•••

~ •,-. . 

### IV . Discussion : M •>•'••• " Purpose : .:••

• Th e purpos e o f th e visi t wa s t o gathe r informatio no nrefiner y processe s andoperations , especiall y th e proces s designe dt o remov e and recove r sulfu r from

refiner y sou r gase s fo r a nupcomin g ne w sourc e performanc e standar d(NSPS ) review . Also , w e discusse dTenneco' s experienc e wit hth e refiner y fue l ga s WSPb . cM-, CONCURRENCE S 

### "
SYMBO L SURNAM E OAT E 

# i
EPA For m 1320- 1 (l*-70 ) OFFICIA L FIL E COP Y GF O : 198 3 0 - 403-20 1P. 3



### Background : j
... Th e refinery* $ origi nwa s abou t th e time o f Worl dWa r I an dwa s know

n a s th e Chalmett e Petroleu

m Corporation . -I nth e IMO's , th e plan t wa s bough t b y D'Antoni o andVaccar o an

d1 n194 4 wa s bough t b

y B v Petroleum . T Tennec o acquire dth e refinery i n1955 . Th e lates t expansio nIncrease d >'MvMth e refinery' s abilit y t o proces s heav

y crud e oil. : Th e ne w

unit s became " operationa l afte r Octobe r 19114 . Thi s refinery ha s two crud e units : on e fo r processin g ligh t crud e oi l an don e fo r processin g heav y crud e oil . Th e ligh t crud e processin g uni t 1 s capabl e o f handlin g 80,00 0 barrels/da y (BBL/D ) an dth e heav

y crud e proces s strea

m I s capabl e o f handlin g 55,00 0 BBL/D , Currently , th e heav y crud e bein g processe da t thi s refinery ha s a sulfu r concentratio no f 2. 5 percen t b y weigh t whil e th e ligh t crud e ha s a sulfu r concentratio no f 0. 5 percen t b y weight .

N 

### Amin e Treatmen t

Th e amin e treatmen t unit , th e sulfu r recovery unit , an dth e tal l ga s treatmen t uni t wer e par t o f th e modernizatio nproject . Thes e unit s becam e operationa l afte r Octobe r 1984 . Th e amin e treatmen t uni t wa s designe dan

dconstructe db

y Fluo r whil e th e sulfu r recovery uni t an dth e tal l ga s treatmen t uni t wa s designe db y Parso nan dconstructe db

y Fluor . Thes e unit s serv e th e entir e refinery .

-V-^r^.i" ^ 

### A s par t o f Tenneco' s constructio npermi t Issue db y th e Louisian a Departmen t o f Natura l Resources , Tennec o wa s require dt o Instal l dua l sulfu r recover y

an dtal l ga s treatmen t units . Eac hsulfu r recover y uni t 1 s designe dt o handl e 18 0 lon g tons/day (LT/D ) o f sulfur . Th e amin e treat men t uni t 1 s designe dt o handl e 54.1 9 M M scf do f sou r gas . Th e amin e treatmen t uni t consist s o f two amin e contactor s an dtw o amin e strippers . Th e amin e contacto r vessel s trea t separat e flows : on e treat s saturate d sou r ga s (23.4 2 M

M scf d0 15 0 psi g an

d200*F ) whil e th e remainin g contacto r treat s unsaturate dsou r ga s (30.7 7 M M scf d#13 5 psi g and175°F) . Th e tota l sou r ga s fee d1 s a combinatio no f th e following : Desig nFlowrat e
' • .. 4V



### _- . . M l •

- -^_.--.. ^ r



### ,A---y- A A .-• • (MMSCFD ) M : ^ • ; >. T " ' • \: . Saturat e Ga

s Source s -*.--
. A J''' Hydrotreatin g Desulfurizatio n .1.4 3 No
. 1 Pretreater ^ ••-.•_;. . 1.4 0 Wast e Ga s Compressor *e••-

• ^ ? 6.9 4 Catalyti c Feed Hydrotreate r0.1 5 Hydrocracke rStrippe r1.4 8 Ligh t End s Plan t 12.0 2 Total ~7TMP. 4

Unsaturat e Ga s Source s No . 1 Coker_Absorbe r ... . 4.1 4 Flui dCatalyti c Cracke r Absorbe r 26.6 3 

### :. .;•_. • ,...-M\
. 

### -•*.:.
. tota l ;;—lo r 'Cv. Th e curren t tota l sou r ga s flo w t o th e amin e treate r i s 49.M M scf dwit h th e saturat e ga s source s contributin g 2 2 M M scf dandth e unsaturat e ga s '•: source s contributin g 2 7 M M scfd . Th e tw o amin e contactor s ar e designed t o trea t sou r refiner y ga s tha t contain s 3. 7 percen t H2 $ b y weigh t (approximatel y

37,00 0 ppm ) an dreduc e th e Hg S concentratio nt o les s tha n 16 0 ppm . -..---. . Othe r proces s unit s withi nth e refiner y utiliz e amin e contactor s t o remov e H2S . Th e catalyti c fee dhydrotreatin g uni t andth e alkylatio n fee duni t utiliz e amin e contactors . Thes e tw o unit s als o supply , refiner y fue l gas . -• ; --:. •••'-.••" . >'-•-_ - M" " 'A -.-A A
. ' .v.- ' ••/».* - . ' "MM-'M . <-•-'- Th e Tennec o Refiner y

1 s currentl y

usin g diglycolamin e (B6A) , a primar y amine , t o remov e H2 S fro m th e sou r refiner y

gas . Th e refiner y stock s abou t 7,00 0 - 10,00 0 gallon s o f concentrate dDG A t o b e use da s mak e u p fo r DG

A tha t 1 $ los t durin g processing . Refiner y personne l considere dth e followin g Hem s t o b e proprietary : amin e solutio nconcen tration , tota l quantit y o f amin e solutio nuse dI nth e system , an d amin e los s rate . Refiner y personne l indicate dtha t a s o f ye t the y hav e no t ha dt o dispos e o f any

wast e amin e solutio nbu t the y fel t tha t wast e amin e solutio n coul db e dispose do f vi a th e refinery' s biologica l wast e wate r treatmen t system . However , thi s metho do f disposa l woul db e very tim e consumin g becaus e th e wast e amin e woul dhav e t o b e graduall y fe dInt o th e wast e wate r treatmen t system ove r a perio do f time . Refiner y personne l state d tha t the y

di dno t hav e th e storag e capacit y t o hol dwast e amin e an d graduall y

fee dI t t o th e wast e wate r treatmen t system ; therefore , the y woul dus e a commercia l wast e disposa l agenc y t o remov e andtrea t th e wast e amine . - • • - H? S Monitorin g andEmissio nTestin g ..,•••---••••, .

. . . i.

. . V * • . . • - V " : * _*_. -'*'-.• { • -
... _.-. . .-f'ytX'...- • --**•.

- ,-..••-.'- • •'
. *••-..-_•«.. > &r±i

- *.•'
. . •••>*^-
. -.S.X.;*. *•• >•,,,- -..:..,,.,-•. • ;- • . _, - , . . • -

_- ^ ••• • Th e amin e syste m

operator s recor dreading s of~th e amin e syste m equipmen t operatin g parameters : pressure , temperature , an dflow , Thi s - include s th e proces s operator s wh o monito r th e amin e syste m from outsid e ' In^th e refiner y

yard.an dth e operator s wh o monito r th e uni t from withi n.-.„ : th e refinery*«5i.—.^£^-^•••-->--__...•-_•- . • , •••- . ^-.A : .- MV . - • ' M-;. : ;

Vl .-. . „._.,....-.^

M Th e refiner y

ha s Installe dmonitor s I nth e refiner y yar ds o tha t yar d 

# ? ersonne l ca nview

wha t I s bein g displaye d1 n th e centra l contro l room , h e monitor s ar e fo r displa y purpose s an

dd o no t allow

yar doperator s t o contro l th e unit . Refiner y personne l believ e tha t Installatio no f monitor sP. 5

_ •tr.-".; withi nth e refiner y yar dha s Improve dcontro l roo m communication s betwee n yar dpersonne l andcentra l contro l personnel . Th e Improve dcommunication s hav e resulte dI nquicke r an dmor e accurat e diagnosi s o f uni t upset s and faste r Implementatio no f solutions , T. - T / "' ; 4?AA''~' 'A-r.A-A--
M . thi s refiner y

utilize s a'continuou s «2 S monitor , I Husto nAtlis . Mode l 722R , whic h1 s locate da t th e refinery' s mai nfue l drum . Th e ; continuou s Hg S monitorin g devic e 1 s no t Integrate dInt o th e proces s a s a contro l system ; U s functio nI s strictl y a process/environmenta l monitor . Dat a collecte db

y thi s monito r 1 s displaye di nth e centra l contro l room . Th e dat a 1 s store dI na compute r firs t a s a si xminut e rollin g average , the na s anhou r averag e a t th e endo f eac hhour . A t th e endo f eac h 8-hou r shift , th e H2 S informatio ni s transferre dt o har ddis k fo r storage . Later , thi s Informatio nwil l b e use dt o generat e Stat e an dFedera l reports . Onc e pe r shift , th e refiner y collect s manua l sample s (Drage r Tube ) o f th e swee t refiner y

ga s a s i t leave s th e amin e contactors . Thes e sample s ar e use dt o demonstrat e complianc e wit hth e H2 S standard . Also , refiner y personne l dall y

chec k th e amin e strengt handth e H2 S loading . Manua l sample s ar e no t routinel y collecte da t th e refinery' s mai nfue l drum . Thus , 1 t 1 s no t possibl e t o compar e th e dat a collecte db y th e N2 S monito r an dth e manua l samples . Th e refiner y doe s hav e a regula r preventiv e maintenanc e program

fo r th e H2 S monito r whic h1 s patterne dafte r th e manufacturer' s suggeste dmaintenanc e schedule . Refiner y personne l Indicate d tha t the y

wer e satisfie dwit hth e performanc e o f th e H2 S continuou s monitorin g device .

. , • x

- » A complianc e tes t ha s bee nconducte do nth e amin e treatin g system tha t supplie s refiner / fue l ga s t o variou s combustio nsource s throughou t th e refinery . Testin g wa s performe dJun e 3 , 1985 , b y Kemro nEnvironmenta l Services . Th e measure dhydroge nsulfid e concentratio naverage dapproximatel y 2.3 5 pp m durin g th e samplin g period . A cop y o f th e tes t repor t ha s bee n place di nth e docket . Refiner y personne l indicat e tha t complianc e test s cos t approximatel y

$2000 . Combustio nSource s an

dEnergy Demand

'•' . Th e Tennec o refiner y currentl y

ha s 5 2 combustio nsources . Thirtee no f

. thes e combustio nsource s hav e th e capacit y t o bur nrefiner y

fue l ga s and .•'.* ' ar e subjec t t o th e petroleu m refiner y

USPS . Inorde r t o mee t th e energ y

- demand , th e Tennec o refiner y utilize s a composit e o f refiner y fue l ga s J-vT,,.- . _.. . an

dnatura l gas . Th e refiner y fue l ga s system

wa s designe dt o produc e - 54.1 9 M M scf dwit hanaverag e heatin g valu e o f 100 0 Btu/scf . Th e current annua l consumptio no f refinery fue l ga s an

dnatura l ga s 1 s estimate dt o b e 20.1 5 M

M BT Uand8.0 2 M

M BT Urespectively . Cos t Dat a Th e onl y cos t informatio ndiscusse ddurin g th e plan t visi t wa s th e cos t o f conductin g anH2 S tes t whic hrefinery personne l indicate dcost s approximatel y

$2000 .P. 6

'-.
. • 

### Comment s Concernin g th e NSP S

. Company personne l reporte dn o difficultie s i ninterpretin g th e HSPS , achievin g th e NSPS , an doperatin g th e amin e system t o compl y

wit hth e NSPS. . -•-.•':

• -•.. "

- '•;-..., . V T . ..,. ; •«•;.;-,...;•• • Confidentia l informatio n .*!

- .; ' 

### Company personne l supplie dm e wit ha copy o f a proces s flow

diagram entitle d"Amin e Regeneratio nSystem " plu s a copy o f th e proces s descriptio n fo r th e amin e regeneratio nsyste m (entitled , "Proces s Description , Amin e Treating , Uni t 82") . Company personne l requeste dtha t thes e tw o Item s b e . classifie da s confidential . Summar y -

; 

### . . . ....?•

_• ._. . • _''M- . 

### ir&A v

### -;:,^-:.•:•-,. . - Mi. . . Th e plan t visi t wa s ver y

Informativ e an drefiner y personne l wer e quit e helpfu l I ndiscussin g genera l plan t operatio nandspecificall y th e amin e treatmen t system . ESED/ISB/SDS/WLELMORE/chbake r 11/26/8 5 x559 5 Rm . 75 5 M U(MD-13 ) Fil e No . AI P 8-1-15- 2 Projec t No . 83/0 3 retype d1/21/8 6 chb

. _•• - ..'.'.- : "_ • '
. :S!

_• - , . "• • ! \ :•*-*£•

„ • J&

-/»..-'•

?"••'».

-

• 2

—'ifjiv : ^.,

- ."S" " -£)- • -.if^f-'.-T-^.
. -A. . • .. . .. t :'5:_-*.-.'
. :.T.