Document qmOqKKwLDG1NXnvvDzow0Kjvk
1-3-S RCV. 1.1.53
To: subject:
INTEROFFICE COMMUNICATION
Westlake, Louisiana September 30, 1970
R. H. Gerlach Revisions to VCM Tank Car Unloading Facilities
Attached is a design for conversion of VCM tank car unloading to direct pumping from the present method of utilizing plant nitrogen.
Basically, this design proposes the installation of a new VCM unloading pump below the south rack for transferring liquid VCM from up to six tank cars into any of the existing storage spheres. An average pumping rate of 400 gpm will allow transfer of at least 3 MM pounds of liquid VCM in a 24-hour period, with car switching time taken into account. Provision is made for use of the Corkin vent gas compressor to provide adequate suction pressure of VCM at the pump inlet. This is accomplished by taking vinyl chloride vapor from &-8phere and compressing the gas to superheat conditions. The gas would then be discharged into the tank car at elevated temperature and pressure. New equipment, piping revisions, and other aspects of this design are given in the body of this report and on the attached P&I diagram.
Justification of this project is on the basis of an average savings of $316 in nitrogen for every 3 MM pounds of VCM unload ed. Based on past operating experience, VCM is unloaded at the rate of about 10 MM pounds every 3 months. Therefore, the estimated capi tal investment of $3500 before taxes for this project would be recovered in 10 months, or before the projected completion of additional VCM storage by the end of.1971 eliminates unloading problems. QMS costs associated with this project are estimated to be $3000. Finally, it should be mentioned that no provision is made for insulating the vapor line from the Corkin compressor to the loading rack. However, if heat losses to vapor do inhibit operation of the new unloading pump, insula tion can then be installed for an estimated $2400 QMS cost.
CLS-MC Attachment cc: LNV
C. L. Shaddock, Jr.
RLH
CliH 000005490
"WORK LIST
1. Install new unloading pump P-426 at grade directly below the point where the south rack meets the main pipe stanchion.
2. Run a new 6" schedule 40 carbon steel line down from 8" VGA3410 to the suction of P-426, installing the required gate valve.
3. Run a new 4" schedule 40 carbon steel line from the discharge
of P-426 directly up to 81* VCA.-908 on the main stanchion, allowing
a few feet below this tie-in for the bypass gate valve to be installed.
Install PG-1, SV-342, 4n check and gate valves on the new pump dis
charge line, and an 8" gate valve on line 908 just below the previous
tie-in.
W
4. Run a new 6M schedule 40 carbon steel line from line 8" VCA908 at the point where this line drops down on the north end of the overhead stanchion and turns eastward. Tie the new 6" line into 6'* VCA-1901 at its southernmost edge (near T-411 C).
5. Install safety relief valves SV-343 and SV-344 at locations designated on the P&I diagram.
6. Readjust the set pressure on Corkin compressor discharge relief -valve SV-654 at 200 psig plus 250 degrees F.
CWH 000005491
VE32E*S3
PLANT LOCATION
ENGINEERING CENTER
PONCA CITY, OKLAHOMA
- ' SPECIFICATION SHEET
Cfc'NTXIFUGAL PUMPS USSrLflXC LA.' PROJECT RS^lSlOAfS
A.F.E.NO. :_________________________--___________
DATE 9-Z2.-10 w. o, NO MADE BY. C US _ _ lMQ.wn.-_-
APP'D BY
REO.NO___________ __
BAt.NO. P.O.NO.
77? VrfA VAJt\n AQlKf/Z FAC > L / 7V.Cr
1 2
3 4
S 6 7 8 9 to
11 13 13 14 15 IS 17 18 IS
20 21 22 23 24 25 26 27
26 29 30 31 32 33 34 35 35 37
38 39 40 41 42 43 44 IP
46 47 48 49 50
APPLICABLE TO: ESTIMATE ( ) PURCHASE| )
- VENOOR
SERVICE /CM U tJAQ/1 D/A/Z
,
MANUFACTURER SIZE AND TYPE
MOTOR DRIVE ( S) TURBINE ( )
STAGES RPM
LIQUID v//VyL- CJ-fLO/R/OC
pt f 7a
SP GR at PT 0,9?,' VAP PRESS, at PT. psia %()
VIS at PT.te O.Z OP.
CORR/EROS caused by
'
OPERATING CONDITIONS
U.S. gpm at PT, NOR. 4,00
DISCH PRESS., psig 4-z. n
SUCT PRESS.. psig MAX 250
DIFF PRESS., osi OIFF HEAO, ft
3i.n m
NPSHAVAIL., ft
X*
CONSTRUCTION
0ES 400
oes 5
ROTATION FACING CPLG. DESIGN EFF. DESIGN B.H.P. MAX. B.H.P. HP DRIVER DESIGN DIA. IMP. MAX. DIA. IMPELLER N.P.S.H. REQO. IN FT. FLUID PUMPED
CASING-MOUNTING (CENTERLINE
) FOOT
) (BRACKET
) (VERTICAL
)
MFRS. BEARING No.
SPLIT
(AXIAL
) (RADIAL
)
RADIAL
. TYPE
(SINGLE VOLUTE
) (OOUBLE VOLUTE
) (DIFFUSER
)
THRUST
TAPPED OPENINGS
(VENT )
(DRAIN
NOZZLES
SIZE
ASA RATING
SUCTION
6" ISO fr
DISCHARGE
4-u ISO &
MATERIAL CODE--EXTERNAL CASING
Z?
l-CAST IRON
INTERNALS CODE
1B
) (GAGE CONNS.
)
FACING
POSITION
PACKING OR SEAL FLUSHING. GPM
NTERNAL PARTS SC
3PECW t- OPPR --M--A--T--E---R--I-A--L---E--X---C--E- P:--T--I-O--N---S---B--Y---V---E--N--D--O---R-----
.X
0--BRONZE S-STEEL
IMPELLER INNER CASE PARTS
1 SS C l s c
;
C--11-13% Cr. A-ALLOY
SLEEVE (PACKED) ' SLEEVE (SEAU
Cr Cr AT Af CCC c
h-HAROENED f-FACED
WEAR PARTS SHAFT
1 B Cr Cr S S S S'
X-
MOTOR 0R1VER BY
ITEM NO.
MTD BY
HP RPM
FRAME
MFR
OR COMPANY APPV'D. EQUAL
TYPE
INSUL
ENC TPPC
TEMP RISE C
VOLTS/PHASE/CYCLES
O/tI^O
BEARINGS
LOBS'
FULL LOAD AMPS
REMARKS:
TURBINE DRIVER BY
ITEM NO
MTD BY
HP
RPM
MATL
MFR and TYPE
INLET STEAM, psig
TEMP F
EXHAUST
*
STEAM RATE. FL
Ib/BHP/HR
BEARINGS
LU8E
NOZZLES SIZE ( ASA RATING FACING POSITION
INLET
.
EXHAUST
WATER COOLING
BEARINGS
STUFF. BOX
PEDESTAL
GLAND
TOTAL C.W.REQD.
COUPLING. MFR. F~AL\<
COUPLING. TYPE TYP5
GUARD
MECH.SEAL. MFR. JffHW
MECH. SEAL. TYPE
c*p
PACKING
V,T '' "
PUMP IS TO BE MANUFACTURED IN ACCORDANCE WITH THE FOLLOWING STANDARDS. ( ) INDICATES ITEM CHANGED ON LATEST REVISION.
DELIVERY. WEEKS PUMP PRICE DRIVER PRICE EST. FREIGHT TOTAL PRICE
More-. /KzconneHP G'quuds. model Zi% pcipip-i^zij'
vjirh pokizonto-l Avs-'is h. P- moto&J- J-
51 /Tr ms'o R-P.'M. pump p^tsp'
400 GPm <3 93 FT, H& WlTh (O" ItfPSLLpZ.
-
CUH 000005492
QUOTATION V/ILL NOT BE CONSIDERED IF SUPPLIER OOES NOT COMPLETE RIGHT HANO COLUMN.
SHEET.
OF
REV..
' 1 PI ANT
n
z
CENTRAL ENGINEERING DEPARTMENT
A.F.E NO
n.rr
09-22-7
SPECIFICATION SHEET NtlWURE GAGES AND DIAPHRAGM SEALS
A-r LA.
pon irrr
RT.VI^IO/'/S
-TO
vrM UNlOADMG P^/Lit/ES 1
PG-
vert Ut(\'!ir> AT P--4-Z&> OlSCMBZGB
''
.
RANGE
'
TUBE MATERIAL MOVEMENT: NYLON - S.S.
BEARING MATERIAL
0 CASE OIAMETER. d'/j~ OR S'
e ACCESSORIES!
-rnf>E#/*TV/*'
8
w
f
0-16(1 PsiG
4-Mu 7a
MANUFACTURER MODEL NO.
PRICE
GENERAL -- PRESSURE GAGES
TYPE ELEMENT: BOUROON TUBE
CASE: SURFACE MOUNTED. PHENOL TURRET TYPE WITH BLOWOUT DISC. OVERRANGE PROTECTION. SNAP DESIGN CASE RING AND BLACK FINISH.
-- 1
DIAL: PLASTIC
FINISH: WHITE WITH BLACK MARKINGS
POINTER: ADJUSTABLE MICROMETER TYPE
1 _______________________
TYPE: SCRO. FLG'D,
BOTTOM HOUSING MATERIAL
TOP HOUSING MATERIAL
-DIAPHRAGM MATERIAL
<.1 PROCESS CONN. SIZE & RATING
H GAGE CONN. SIZE
' LIQUID FILL FLU IO X *e PROCESS OPERATING TEMP. X PROCESS PRESS. RANGE
MANUFACTURER MODEL NO. i PRICE | TOTAL PRICE GAGE AND SEAL
NOTES:
I |
SUPPLIER TO COMPLETE FORM BY FURNISHING INFORMATION FOR BLANK SPACES
SHEET-
CUM 000005493
.OF.
.REV.
PLANT
CENTRAL ENGINEERING DEPARTMENT
PONCA CITY, OKLAHOMA
* SPECIFICATION SHEET RELIEF VALVES
VCMi WESTLAKE, LA,
PROJ ECT REVISIONS
A.F.E. no
pate- ^ "* 2.5 - ~7Q
MADS BY.
CLS
--------- -- w. O. NO
APP"D BYREQ. NO
B. M. NO P. O. NO
TO VCM UNLdflPtNS SAC IL IT / z.
GENERAL 1 ITEM NO. 8 TAG 2 RELIEVES EQUIPMENT NO. 3 MANUFACTURER 4 MODEL NO.
S
SV-.&Z P-4-Z6
SV-.34-?
SV~344^
V KC/1 TRANSFER l\U 9'* HPR. frr 5QVTH Kfick
SERVICE CONDITIONS
6 FLUID 7 STATE 8 REQUIRED CAPACITY
WAI'll C.NLOR/PE
liQvio '--
VINYL CNL.OR IDE
LIQUID --
ViNYL CHUN/ME
UQUlD --
9 MOL. WT.
SP. GR,
io VISCOSITY
11 COMPRESSIBILITY FACTOR .
12 DESIGN PRESS. OF EQUIPMENT
62 .5 ----------0--,-2------- f-------
13 PRESS. OPERATING RELIEVING
T4 TEMP. /= FLOWING RELIEVING
13 BACK PRESSURE
16 IIRII bllOIIMA SET PRESSURE
17 ACCUMULATION
%
18 BLOW DOWN
%
IB
ISO a so 10 0 /oo
o a SO
6 2.5 0.9 2O,?. CP i
HO
A5~o
/oo /oo -
o
2. To
&Z.S 0.92.
O. Z CP -- '
mo
/oo
zoo
JO 0
0
D.So
BASIS OF SELECTION 20 COOE REQUIREMENT 21 EXPOSED AREA 22 INSULATJON THICKNESS 23 OTHER BASIS 24
OESIGN DETAILS 23 DESIGN TYPE
: THfRMftL RELIEF THF.Rmt. RELIEF Tfzrmaj Relief
26 SEAT TYPE
27 BONNET (OPEN OR CLOSEOI 28 INLET SIZE. RATING. FACING
17t
29 OUTLET SIZE. RATING. FACING
30 CALCULATED AREA
31 ORIFICE LETTER ACTUAL AREA
32 BODY
MATERIALS
| BONNET
33 SEAT ft DISK
34 GUIDE ft RING
" 1 "
o.o4- mJ-
(7.04-
.5\ i CsS.. C.S*. | C.S,
33 SPRING 36 BELLOWS
ACCESSORIES
37 LIFTING LEVER (PLAIN OR PACKED 38 GAG 39 CODE STAMP 40 CAP (SCREWED OR BOLTED)
41 OTHER
NOTES:
MANUFACTURER SHALL VERIFY SELECTION OF ORIFICE SIZE AND MATERIALS. VALVES SHALL MEET DIMENSION REQUIREMENTS OF API RP-S2.6VALVES SHALL MEET TEST REQUIREMENTS OF API RP- 527.
SUPPLIER TO COMPLETE FORM BY FURNISHING INFORMATION FOR BLANK SPACES
% A____________ 1"
c.s,
0.04- IN2'
c.s _________ I_________
/
CUH 000005494 i_OF_JL
CORKIN COMPRESSOR FOR VENT RECOVERY SYSTP1
The Corkin compressor is designed to evacuate the T-401 and T-411 spheres and railroad tank cars down to atmospheric pressure so that the VCM vapors in these tanks can be reclaimed. One of the T-411 spheres contains about 72,800 lbs. of VCM gas (based on 40 psig pres sure and 60 degrees F) of which 73 percent can be recovered by evacu ating down to 14.7 psia. The 53,600 lbs. of recovered VCM (6950 gals.) , is worth 3.3 cents per pound or $1,780/sphere. The T-401 spheres under the same conditions would generate 5,360 lbs. of VCM (695 gals.) or $178 worth of recovered VCM. Tank cars would allow recovery of from 1/8 to 1/2 as much material as the T-401 spheres.
The compressor used is a Corkin, Model D.690-109 which has a
' minimum suction pressure of 2 psia and a maximum of 225 psig. Outlet
pressure can vary from vent recovery tank pressure (about 30 psig mini
mum) up to 250 psig. A safety valve is furnished on the compressor dis
charge and is set at 250 psig. The compressor is driven at 825 rpm by
a belt-connected 1800 rpm, 10 HP motor. It will compress from 55 Acfm
gas (inlet conditions 40 psig plus 60 degrees and outlet at 95 psig
and 180 degrees F) down to 36 Acfm (inlet conditions 14*7 psia and 60
t
degrees F and outlet at 60 psig and 325 degrees F). This is equivalent
to 34.7 lbs/min VCM at 40 psig or 6.0 lbs/min VCM at 14.7 psia. The
compressor has an inlet liquid separator with a built in internal shutoff
valve to protect the unit against possible liquid slugs.
i..
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*
I
CUH 00005^93