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Norton Chemical Process Products Products Corporation
An Overview of Intalox ® High-Performance Systems.
A t N orton C hem ical P rocess P rod ucts C orporation, an Intalox® H ighP erform ance S ystem is an entire packed tow er — a tow er w hich contains w ell-m atched com po nents for optim aldistillation, absorption or stripping perform an ce. W e callour high -perform ance system s INTALOX becau se this w ell-respected trad em ark rep resents the p red ictab le and reliab le p erform an ce of thousan ds of N orton-packed tow ers in service w orldw ide. In every Intalox H igh-P erform ance S ystem , you w illfind a superior N orton tow er packing and a carefully selected liquid and/or vapor distributor, engineered to assure sp ecific distribution levels.
Intalox ® High-Performance Structured Packing (B ulletin IS P -2) P rovides m axim um pred ictab le fractionation efficiencies.
C om bines high cap acity and low pressu re d rop per theoretica lstag e.
Features a un ique doub le-corrug ated sheet co nstruction.
Ceramic, Plastic and Metal Random Packings (B ulletins C TP -1, P TP -1 and M TP-1)
P aten ted sheet surface texturing im proves separation efficiency.
S ad dles, pallring s a nd R asch ig rings.
Intalox ® Snowflake ® High-Performance Plastic Packing (B ulletin IS P P -1R )
A sso ciated tow er internals.
P rovides greater cap acity and efficiency than fractionation trays and other rand om packing s. E xhibits ap proxim ately 40 % low er pressure d rop than eq ual-sized pallrings. M inim izes liquid residence tim e through low liquid hold-up. Q uickly installed; requires m inim al changes in existing vessels; structuralstrength allow s p acking dep ths u p to 15 m (50 ft) or m ore.
Hy-Contact™ Fractionation Trays (B ulletin FT-2) Valve, si eve an d bubblecap trays.
IMTP ® High-Performance Random Packing
Other Norton mass transfe r products
O ptim izes ab sorption an d stripping tow ers. C om bines high cap acity w ith h igh efficiency in one p acking size. P rovides low er pressure d rop than 90 m m (3.5 in.) plastic packing s. Exh ibits greater efficiency than other 38 m m (1.5 in.) plastic packing s.
Intalox ® Liquid and Vapor Distributors (B ulletin TIG -1)
E ach d esign is based on N orton’ s rating system for quantifying distribution uniform ity.
W ith Intalox d istributors, packing perform anc e is ind ep endent of tow er diam eter and bed de pth.
Intalox distributors are essentialin tow ers req uiring m an y stag es w ith low H ETP.
Intalox d istributors are available in pan-type, deck-type and troug htyp e construction.
S tan dard o r cartridge assem bly.
Grid-Type Packing (B ulletin IG -1)
P rovides great structured stren gth and fouling resistance.
Liquid/Liquid Extraction Tower Internals (B ulletin TIG -1)
Feed pipes an d disp ersion plates to acco m pany various p ackings.
Denstone ® Catalyst Bed Support Media (B ulletin D EN -1)
A vailable in a variety o f sizes and ceram ic m aterials.
IMTP Packing Performance.
IM TP packing is applicable in as broad a range o f services as any m ass transfer device. It is h eavily used in distillation tow ers — from deep vacuum tow ers, w here its low pressure drop is crucial, to high-pressure tow ers, w here its capacity easily su rpasses that of trays. M an y ab sorption and stripping tow ers, esp ecially those aim ing for high cap acity or m an y stag es, rely on IM TP packing. The low pressure d rop of IM TP packing contributes to its success in heat transfer tow ers, such as olefin plan t que nch colum ns.
IMTP Packing Performance Under Uniform Liquid and Vapor Distribution
To provide insight into the highperform an ce operating ch aracteristics of IM TP packing , co nsider the packing perform ance curve. In a distillation system , uniform liquid and vapor distribution causes the H ETP to b e nearly ind ep endent of liquid an d vapor rates. A t high vap or rates, how ever, the pac king exhibits a region of im proved efficiency (low H E TP ) w here high vapor turbulenc e influences the liquid surfaces and im proves the m ass tran sfer. N orton d efines tw o p acking prop erties from a p erform an ce cu rve: 1.The S ystem B ase H ETP of a packing, w hich is the flat H E TP value produced by un iform distribution. 2.The E fficien t C ap acity of a p acking, w hich is the g reatest vapor rate at w hich the packing stillm aintains the System B ase H ETP.
t ) e n t e l a l a P v i l u a q c i E t t e h r g o i e e h T H ( a P o T t E H
F l o o d P o i n t
E f f i c i e n t C a p a c i t y
Materials of Construction IM TP packing can be fab ricated from alm ost any m etal. E xam ples of available m etals a re: C arbo n steel S tainless steel
S y s t e m
B a s e H E T P
S ince E fficient C apacity is not the sam e a s the hyd raulic capacity or flood point, N orton rates packing s b y percent of E fficient C apacity rather than by p ercent of flood. The System B ase H ETP concept raises im portan t questions:
W hat is the S ystem B ase H ET P of a packing in a given system ? (S ee p ag e 6).
H ow m uch does liquid distribution quality affect H E TP ? (S ee pag e 1 1)
W hich liquid distributors sh ould be chosen to m ake a tow er perform near its S ystem B ase H E TP ? C onsult the Tow er Internals G uide, TIG -1.
H igh-alloy steels D uplex steels N ickeland nickelalloys Copper A lum inum Titanium Zirconium
IMTP Packing Sizes Available IM TP packing is available in six sizes. From sm allest to largest, the sizes are num bered 15 , 25 , 40 , 50 , 60 and 70 . Th e sm all sizes exhibit the best efficiency, w hereas the large sizes exhibit the greatest capacity and low est pressure d rop.
IMTP Packing Capacity.
The E fficien t C ap acity of IM TP packing in a no n-foam ing system can be estim ated as:
E fficient C apacity, C S C = C o 20
No. 70 No. 60
1.00 0.90 0.80 0.70
0.60 0.50 0.40
s / t f 0.30 o C
0.10 0.09 0.08 0.07
C o - m / s
0.06 0.05 0.04
Flow Parameter, X
Nomenclature and Definitions L - Liqu id m ass rate G - G as m ass rate - Liquid density L G - G as density V - Superficialgas velocity, m /s o r ft/s
L X - G
n g e a t a R D a
Flow param eter
m /s o r ft/s
- S urface ten sion, dyne /cm
- Liquid viscosity, cp
- Liquid kinem atic viscosity, cs
N orton routinely d esigns tow ers u p to 90% of Efficient C apacity.This lim it leaves an estim ated 11 % turn-up before the packing loses its d esign efficiency.
IMTP Packing Pressure Drop.
Th e p ressu re d rop o f IM TP packing in non-foam ing system s can be estim ated by the follow ing G eneralized P ressu re D rop C orrelation.
Generalized Pressure Drop Correlation 10.
1.5 ( 1 2 5 ) 1.0 ( 8 3) 0.50 ( 42) 0.25 (21)
Values of Pressure Drop P aram eter of cu rves is pressure d rop in inc hes of w ater per foot. Figures show n in parentheses are m m of w ater per m eter of packed height.
1.0 1 . 0
s C • F = Y
Flow Parameter, X
r f/ t e t a w . n i 1 .0
= 1.87 m m H g/ft = 6.15 m m H g/m = 817 P a/m
Value of Packing Factor F
i z e S n g c k i n m / s a P P C s i f t / s T I M h e n i n s F w h e n C o n t i F w i m i t a m 2 t e L 3 / h • / f t 2 a i d R m g p m u q L i
N o. 15 54 9
N o. 25 44 1
N o. 40 25 8
N o. 50 19 4
N o. 60 17 2
N o. 70 12 9
12 2 50
12 2 50
12 2 50
12 2 50
Norto n’s Packed Tow er Design Program em ploys different values of Packing Factor F for d ifferent liquid rates. Average values show n should not b e used above the liquid rate limit. For liquid rates ab ove the limit, use the rating program or co ntact Norton for an app ropriate F value.
IMTP Packing Efficiency.
The efficien cy of pac king in m ost distillation tow ers is exp ressed as H ETP, or height eq uivalen t to a theoreticalplate. The m ass transfer efficiency of allm ass transfer devices is system properties dep endent. S ystem properties that affect the efficiency are liquid viscosity and surface tension. The efficiency of a packed system also dep en ds on the u niform ity of liquid and vapor distribution. The concept of S ystem B ase H ET P assum es tha t a sp ecific separation receives uniform liquid an d vapor distribution. This concept is useful because it iso lates the system ’ s effect on H ETP aw ay from the distribution co nsiderations. A s a first approach in projecting H ETP values, N orton has d evelop ed a co rrelation for estim ating H E TP from the system properties. It is d esirable to co nfirm the projected H ETP values w ith test data in co lum ns having uniform vapor and liquid distribution in the sam e system or a system having very sim ilar properties. N orton h as an extensive b ank of operating data from a w ide variety of system s and can provide referen ce data to co nfirm final H ETP values up on request. The efficiency correlation applies to system s w hich (a) are non -aq ueou s, (b) are non-reacting an d non-ionizing, and (c) have low relative vo latility (less than three). In these system s, the S ystem B ase H ETP of IM TP packing for distillation an d reboiled stripping service s can be estim ated by:
System B ase H ETP = A 20 or
The p acking efficiency in o ther services or other system s m ust be estim ated by other m etho ds.
e S i z g n c k i - m m a P P A - i n. T I M A m m B - - i n. B
N o. 15
N o. 25
N o. 40
N o. 50
N o. 60
N o. 70
27 2 10.7 29 6 11.7
33 0 13.0 36 6 14.4
40 1 15.8 43 9 17.3
52 6 20.7 57 9 22.8
61 6 24.2 67 8 26.7
75 8 29.9 82 7 32.6
t s i m i L i o n t a l r r e C o
With Norton Intalox liquid distributors, the HETP of IMTP packing is independent of tower diameter and packing d epth.
Values of A and B
System B ase H ETP = B 20
N on-un iform liquid a nd vap or distribution w illcause actualH E TP values to be substantially g reater than the S ystem B ase H E TP value. H ow ever, com m ercialtow ers w ith proper liquid and vapor distribution co nsistently ap proach the S ystem B ase H E TP w ithin 1 3% . Fo r this reason , N orton design s often use H E TP values 13% abo ve the S ystem B ase H ETP. W hat rep resen ts p roper liquid distribution for a com m ercialtow er? In tow ers requiring few theoretical stages, traditionaldistributors can app roach the S ystem B ase H ET P value. C onversely,in tow ers requiring m an y theo reticalstag es N orton Intalox d istributors are required to app roach the S ystem B ase H ET P value.
R elative Volatility < 3 If > 27 , use = 27
n g e a t a R a D
≤ 26.6 ≤ ≤ 0.83 ≤
for > 0.4 cp - S urface
ten sion, dyne/cm - Liquid viscosity, cp
Comparison of IMTP Packing to Other Mass Transfer Devices.
Th e p erform ance o f a m ass transfer device is typically m easured by com paring its capacity and efficiency. A n effective device w illallow a high
throughput capacity for a g iven level of efficiency. In vacuum service, the pressure d rop of the d evice is also a m easure o f its perform ance.
IMTP packing has greater capacity and efficiency than trays, as illustrated by the following charts.
Comparison at Flow Parameter X = 0. 028 100 mm Hg Hydrocarbon Distillation 18
N o. 25
N o. 40 (18)
n g c k i a P P T M I
N o. 50 N o. 60
(24) 61 0
4 v e e i s e n t i c o u s ( n ). 2 i e f f t v a r i m m i s a n g s, 6 0 % y a r t a c i s p
IMTP packing out performs other random dumped pack ings, as shown below.
N o. 70
E f f i c t i r e a y n s c o y r a 7 s 9 s 2 t 0 a g m e m s p ( 2 e r 6 9 . 1 0 f 5 t . 0 ) p m a m c k ( 3 i n 0 g 0 . f t . )
0.15 m/s 0.50 ft/s
Comparison at Flow Parameter X = 0 . 69 14. 7 bar (210 PSIA) FCC Deethanizing Stripper 18
N o. 25
N o. 40 45 7
l v e a v e n t i c o u s i n ). i f e f t v a r i m m ( a , 6 0 % y s g s t r a a c i n s p
Typ icalP ressure D rop R elationship
N o. 70
0.060 0.075 m/s 0.20 0.25 ft/ s
50 mm (2 in. ) Packings
25 mm (1 in. ) Packings CIS = Ceramic Intalox Saddle
N o. 60
(24) 76 2
N o. 50
n g c k i a P P T M I
Typica lC ap acity R elationship
Typ icalP ressure D rop R elationship 1.47
Typica lC ap acity R elationship
MPR = Metal Pall Ring
C I S
M P R
I M T P
0.58 C I S
M P R
I M T P
C I S
M P R
I M T P
C I S
E f f i c t i r e a n y s c o y r a 7 s 9 s 2 t 0 a g m e m s p ( 2 e r 6 9 . 1 0 f 5 t . 0 ) p m a m c k ( 3 i n 0 g 0 . f t . )
M P R
I M T P
Statement of Problem : A deep bed of N o. 50 IM TP packing is to be u sed in a 2 438 m m (96 in.) ID 11.0 bar ga (160 psig) hyd rocarbon stripper. R ate the packing capacity an d estim ate its p ressure drop under the follow ing hyd rau lic loadings.
Liquid R ate - 244,940 kg/hr (540,000 lb/hr) Liquid D en sity - 544.6 kg /m 3 (34.0 lb/ft3 ) Liquid V iscosity - 0.25 cp
Vapor R ate - 76 ,20 0 kg /hr (168,000 lb/hr) Vap or D en sity - 22.4 kg/m 3 (1.40 lb/ft3) S urface Tension - 10.5 dyne/cm
The sequence of calculation is:
1. Tow er C ross-SectionalA rea
= (0.785 4)(2.43 8)2 = 4.66 8 m 2
2. S uperficialVapor Velocity G V = G •A
3. C ap acity F actor, C s (see p g. 4)
C s = 0.202 4
4. Flow P aram eter, X (see p g. 4)
5. K inem atic V iscosity
= / ( L , g/cm
= (0.78 54 )(8.0)2 = 50.27 ft2
= 0.2024 m /s
= 0.6631 ft/s
2 2 .4 54 4 .6 -22.4
C s = 0.663 1
= 0.0419 m /s
1 .4 0 34 .0 -1 .40
= 0.1374 ft/s
2 4 4 9 4 0 2 2 .4
76200 = 0.65 2
5 4 4 .6
/ 1000 5 4 4 .6
1 .4 0 3 4 .0
168000 = 0.65 2
= 0.46 cs
3 4 .0 6 2 .4
= 0.46 cs
Capacity Rating: From the capacity chart on p ag e 4, C o = 0.06 1 m /s (0.20 ft/s) for N o. 50 IM TP packing at X = 0.65 . 6. E fficient C apacity, C sc (see p g. 4) 7. C ap acity R ating Cs
1 0 .5 C sc = (0.061) 20 = 0 .053 7 m /s
0 .0 4 1 9 0 .0 5 3 7
0 .2 5 0 .2
= 78% C apacity
1 0 .5 C sc = (0.20) 20 = 0.1760 ft/s
0 .1 3 7 4 0 .1 7 6 0
0 .2 5 0 .2
= 78% C apacity
Pressure Drop Estimation: 8. O rdinate V alue (see p g. 5)
9. P ressu re D rop (see p g. 5)
Y = (194 )(0.0419 )2 (0.46)0.1 = 0 .31 5
P = 14 m m H 2 O /m
Y = (18)(0.137 4)2 (0.46)0.1 = 0.31 4
P = 0.17 in. H 2 O /ft
Case Stud y.
Question: A gas plan t deethanizer co ntains three b ed s of IM TP packing and Intalox distributors. Five sets of operating d ata w ere analyzed to ob tain m easured H ETP values as tab ulated below . Is the d eethan izer packing perform ing as it should?
Analysis: The averag e surface ten sion value in the rectifying section is 3.0 dyne/cm , an d the averag e viscosity is 0.065 cp . B y the co rrelation on pag e 6, the S ystem B ase H ETP of N o. 25 IM TP packing in the rectifying section is:
3 .0 System B ase H ETP = 330 20 or 3 .0 S ystem B ase H ETP = 13.0 20
n c t i o e S e r - m m w T o p t h s - f t e s d D e p t h i z e e B d D P S B e I M T / c m y n e c p d o n o s i t y n t i s T e n V i s c e C o u e m c r f a i q u i d S t a g P - m . u S L E T P - i n H r e d H E T u s d a M e a s u r e M e
7087 & 7772
23 '3" & 25 '6"
N o. 25
N o. 50
2.5 - 3.5
1.2 - 4.0
0.06 - 0.07
0.05 - 0.08
(1.78)0.065 = 46 4 m m
(1.78)0.065 = 18.3 in.
S im ilarly, the S ystem B ase H E TP of N o. 50 IM TP packing in the stripping section is:
2 .6 System B ase H ETP = 526 20 or 2 .6 S ystem B ase H ETP = 20.7 20
(1.78)0.065 = 75 7 m m
(1.78)0.065 = 29.8 in.
i o n t c e r S m m e T o w T P - m H E - m d r e T P a s u e H E - i n. e M B a s P E T i n. H m t e e d S y s a s u r H E T P M e a s e B m e t S y s
Conclusion: M easured H ET P values should b e equalto, or slightly above, the S ystem B ase H E TP values estim ated by the correlation. B ecause the deethanizer H E TP values are very close to the c orrelation values, w e conclude that the deethanizer’ s pac king is ach ieving the b est efficiency that can b e exp ected .
Liquid Distribution for Intalox Systems.
Liquid Distribution Quality M any researchers in the distillation field have proven that uniform liquid distribution over tow er packing is im perative for developing the fullefficien cy o f the packing. This concept, ho w ever, poses q uestions concerning liquid distribution devices:
Typic al Packed Tower Layout
x f l u R e
e d F e
How can d istribution uniformity or distribution q uality be analyzed to quant ify the degree of uniformity?
What d egree of uniformity is required for a comm ercial packed tow er to perform sat isfactorily?
i p e P e d F e d u i t o r u b L i q i i s t r i t e r D u i d L i m L i q B e d g k i n c P a e l a t P t ) o r p p f e e d s u S s e h a r o - p i b u t o w t ( i s t r i t e r r y d e l l e R m G a i d d L i h u s e q B L i F l a n g c k i a P
e l a t P o r t p p u r S u t o b i r i s t r D o p V a
r o i l e b R e p o r V a
N orton h as d eveloped a d istributor rating system * for quantifying distribution uniform ity. W e rate distribution quality as a p ercentag e, w here 1 00% quality indicates idealuniform distribution an d 0% indicates a significant portion o f packing is receiving no liquid at all. The significance o f Norto n’s distribution q uality rating system is that the rating correlates to tow er performance. N orton has foun d that tow ers w ith deep bed s o f high-efficiency packing are se nsitive to liquid distribution quality. C onversely, tow ers w ith sh allow beds o f traditionalpacking are less sensitive to distribution quality.
*Norton’s distributo r rating system was presented in the paper, “Liquid and G as Distribution in Comm ercial Packed Tow ers,” at the 36t h Canadian Chem ical Engineering Conference in Octo ber, 1986. The paper was also pub lished in CPP Edition Europe, August , 1987.
When is distribution quality important?
From N orton’ s quantitative distributor rating system , N orton defines tw o categories of liquid distributors: N orton Intalox D istributors Tradition alD istributors
90-100% quality gen erally 30 -85 % qu ality
Norton Intalox distributors are engineered for
The effect of liquid distribution q uality on tower performance is shown by this c orrelation:
High purity product distillation services
Distillation services operating close to minimum reflux
Heat t ransfer services with close temperature approach
Services with high stage count per bed
Norton traditional distribut ors are designed for t owers where fewer stages are required, or where achieving the System Base HETP of the packing is not critical. In these towers, a small amount of extra packing permits the use of a less expensive traditional distributor. N orton Tow er Internals G uide (TIG -1) presents a com plete d iscussion of liquid distribution as w ellas a co m plete sum m ary o f availab le liquid an d vap or distribution eq uipm en t.
16 g n i k c 14 a P f o 12 d e B r e 10 p s e g 8 a t S l a u 6 t c A
20 Stages per Bed w ith System Base HETP
Distribut ion Quality, Percent
In addition to its high-quality products, N orton o ffers a ran ge o f services and technicalexp ertise to its custom ers. Software Availa ble. N orton has develop ed tw o so ftw are packages for its custom ers: the P acked Tow er D esign P rog ram and the Tow er Internals G uide and S election S oftw are P rogram . The P acked Tow er D esign P rog ram he lps custom ers size their tow er and select the proper packing for optim al tow er perform ance. Th e p rog ram calculates pressure d rop, efficiency and capacity of N orton various packing s an d provides data o n liquid ho ld-up. Th e 50 -page Tow er Internals G uide brochure (TIG -1) features m odel descriptions an d ap plication recom m endation s for a w ide range of N orton m ass transfer products. Each description includes the m odel’ s availab le m aterials o f co nstruction an d optionalfeatures. The Tow er Internals S election S oftw are P rogram allow s the user to determ ine the ap propriate eq uipm ent based o n application req uirem ents. Th e prog ram prom pts the u ser to enter application data includ ing tow er diam eter, tem perature, liquid and/or gas flow rates, turnd ow n ratio and fouling ten den cy. G iven these characteristics, the p rogram specifies eq uipm ent for optim al perform ance.
Pilot Plant. N orton’ s pilot plant distillation colum ns located in O hio are available for testing w ith custom er-supplied test system s. These tow ers p rovide inform ation on packing efficiency, capacity an d pressure d rop in the custom er’ s sp ecific system . N orton’ s 38 7 m m (15 .25 in.) ID colum n can hold up to 6 m (20 ft) of random packing , struc tured packing or cartridge trays. This tow er is constructed of 316L stainless steeland is rated for fullvacuum to 400 psia. N orton also offers the use of its 762 m m (30 in.) atm osp heric ab sorber/stripper tow er of 304 stainless steel.
Distributor Test Stands. In its U .S . and E uropean m anufacturing locations, N orton provides flow dem onstrations o f finished liquid distributors u p to 10 m (33 ft) in diam eter. D istributors are tested w ith circulating w ater w ith flow rates up to 910 m 3/h (4,000 gpm ). Individualdistribution points or sets of distribution points can be m etered to assu re all points o r areas are flow ing w ithin sp ecification. W hen ever po ssible, the tests e m ploy the finished liquid feed pipe as w ellas the distributor. These tests p rovide finalassurance that custom er need s and N orton claim s of distribution quality have been m et in the finished product.
Installation Services. N orton provides field consultants to assist custom ers w ith the installation of N orton trays and packing s anyw here in the w orld. M any custom ers have averted m ajor prob lem s and saved significant tim e b y requesting on-site su pervision of their projects. In the U .S ., N orton P rocess S ervices, Inc., a w ho lly-ow ned subsidiary o f N orton C hem ical P roc ess P rod ucts C orporation, offers full-service contracting for tow er m odifications and internalequipm ent installation.
Scanning Services. N orton To w er S olutionsSM S can ning A nalysis provides gam m a scans of operating tow ers and interpretation of the results. A Tow er S olutions scan can diagno se prob lem s that can no t be seen w hen the tow er is no t operating. A scan is an effec tive tool to d iagno se p rob lem s and prep are solution s in ad vance of a sh utdow n for repairs o r m odification.
Quality Policy Statement.
W e at N orton C hem ical P roce ss P roducts C orporation h ave a m ission to achieve and sustain a m arket leadership position in our core b usine sses: M ass Transfer an d C atalytic P roducts. W e b elieve our long term success dep en ds on o ur ab ility to deliver excellence in both perceived an d realized value o f our products an d services to our cu stom ers. In o ur culture “ Q uality in everything w e do”is the only accep tab le beh avior. Th e processes of C on tinuou s Im provem ent and Total Q uality M anag em ent are essential to o ur success. O ur philosophy is to im plem ent m anagem ent system s w hich provide value an d satisfaction to our cu stom ers. O ur focu s is d irected tow ard ach ieving and exceed ing cu stom er expectations. W e w ill provide p roducts an d services that are clearly o f a higher quality than tho se o f our co m petitors.
W e reco gnize that qu ality is a never-ending process of im provem ent aim ing at co m plete cu stom er satisfaction and co nform ance to their changing req uirem en ts. W e w illm aintain op en com m unications w ith o ur cu stom ers to assure tha t their presen t and long term req uirem ents are our prim ary co nsideration. W e w illdevelop and sustain our qua lity system em phasizing total em ployee involvem ent, team w ork, collaboration, break-through thinking, judicious reso urce allocation, creative problem solving, co nstan cy o f purpose, and the determ ination to succeed .
N orton C hem ical P roc ess P rod ucts C orporation, w orldw ide headquarters, sales o ffices and m anufacturing facilities are certified for IS O 9001:1994.
N orton’ s E uropean operation is approved and certified throug h B S I to IS O 9001:1994.
15 Worldwide Office Locations.
Worldwide Hea dquarters N orton C hem ical P roc ess P rod ucts C orporation P.O . B ox 3 50 A kron, O H 4430 9-035 0 Telep ho ne: 330 -67 3-586 0 U .S . TollFree: 1-888 -N O R TO N -1 Fax: 33 0-67 7-72 45
Sales Offices Australia N orton E ngineering M aterials D ivision of N orton P ty. Ltd. N yrang S treet, P.O . B ox 44 Lidcom be, N S W , A ustralia 214 1 Telep ho ne: (61) 2-649-0161 Fax: (61) 2-643-2926
Mexico N orton International, Inc. A lejandro D um as #103 2 D o P iso C olonia P olanco M exico , D .F., C .P. 11590 M exico Telep ho ne: (52) 5-280-05-22 Fax: (52) 5-280 -06-47
Main Office Europe N orton C hem ical P roc ess P rod ucts E urop ean O peration s K ing S treet Fenton, Stoke-on-Trent S T4 2 LT E ngland Telep ho ne: (44 ) 17 82 -74 45 61 Fax: (44 ) 17 82 -74 43 30
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