EQUIPMENT Proposed Layout
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adds. Bends in various planes, any number of anchors and joints, ancfcombinations of series and parallel flow, re cycle, and other arrangements can be Computer now checks proposed piping layout for included without difficultiescompliance with ASME code on allowable stresses • Many Computers Applicable. At present, Blaw-Knox is carrying out its computations on the Univac at Reming A TEME-CONSUMING I>ART of planning is not required. Secondly, a n d easier ton Rand's New York headquarters. a layout for power plant and high tem to understand, if a system component perature process piping is the calcula is changed, only that portion of the However, B-K sees no reason why other tion of stresses. In order to ensure com computation affected by the changed similar computers would n o t perform pliance with ASME piping codes, these part need b e redone. The computer with equal success. And the 6 x 6 matrix method it has stresses must be known for the various has stored the intermediate figures and worked out with Litde is available for levels of process temperature and pres does not have to return to t h e beginuse by consulting engineers and others sure to which the system will be ex ing. who have similar problems in t h e de posed. The 6 x 6 matrix method has reduced When the stress calculations are the over-all time of calculation for a sign of piping systems. Since the calculations must b e done done manually, they often take up to a piping system from a man-month to man-month or more t o complete, based less than one working day. T h e savings to ensure that the proposed piping on experience of Blaw-Knox's Power in engineering effort alone are consider systems do not violate ASME require Piping Division. In order to reduce able, but the major advantage is in the ments, the computer will save signifi this time and manpower expenditure, speed with which a design moves from cant quantities of time, money, and Blaw-Knox and Arthur D. Little, Inc., the drawing board t o construction, engineering manpower, if ihe experi joined forces some two years ago to Blaw-Knox says. Further, the company ence Blaw-Knox bas acquired is indica work out a means o f applying digital can examine a proposed system of high tive. The 6 X 6 Flexible Matrix Method computers to the solution of these temperature piping even before bidding will soon b e published in. detail by problems. on the job. Using the "classical" mathematical • Simple t o Do. With t h e 6 x 6 ASME, according to a company spokes approach, matrices u p to 2 0 X 20 are matrices, the only data needed to cal man. I t is a mathematician's dream, he not uncommon for piping system prob culate the stresses generated under vari says. lems. Handling such problems on a ous temperatures and pressures in a computer, although feasible, is really given piping system are dimensions and little better than doing the job by hand, physical properties of the pipes. The Relax, Creep Blaw-Knox found. However, after dimensions are taken from a n isometric about 18 months of mathematical drawing of the proposed layout. Creep resistance in metals is n o w manipulations, B-K and A. D . Little Total time for coding, checking the being measured b y Shell Development eflEorts were rewarded with the "6 X 6 code, calculating, and readout is about with a machine designed b y Pierre Flexible Matrix Method." This method one working day, although only one Chevenard, Frencn scientist. The in is said to be an outstanding improve hour of this is actual computation. An strument is the only one i n t h e U. S., ment over previous ones because of its swers are printed i n tabular form to six although there i s another one at the simplicity, speed, and accuracy. significant figures. The only limitation Chalk River Laboratories of Atomic En There are two major advantages in in accuracy is in the accuracy of the ergy of Canada, Ltd. Creep, the continuous flcrw o f a solid the 6 X 6 method, Blaw-Knox says. input data, Blaw-Knox says. First, and primarily of interest to math Piping systems of any degree of com at elevated temperatures ancl under ematicians, inversion of larger matrices plexity can be handled, the company heavy load, is detennined b y measuring
Lay That Slide Rule Down
5580
C&EN
NOV.
12, 1 9 5 6
CUSTOM DESIGNED FILTRATION
Get the last ounce of efficiency, at no extra cost ...it adds up to big savings . When your filter runs hour after h o u r . . . month after month . . . a few points extra efficiency soon pays back the cost of the finest machine you can buy. There's only one sure way to get this last ounce of efficiency: custom design. In all types of rotary vacuum filters, FEinc's custom design has consistently delivered whatever is required. Whether you want higher recovery of valuable solubles with less dilution. . . lower impurities in finished cake . . . 2-6% less moisture . . . or just higher output in limited floor space.. . FEinc can deliver. We'll be happy to conduct complete tests and submit recommendations. No obligation. Write today.
FILTRATION
ENGINEERS,
INC.
SUBSIDIARY O F A M E R I C A N M A C H I N E &. M E T A L S , INC.
1 5 5 O r a t o n S t r e e t , N e w a r k 4-, N. J .
NOV.
12,
1956 C&EN
5581
EQUIPMENT
SAFETY first... plus ECONOMY! KEWAUNEE AIRFLOW FUME H O O D S
t h e c h a n g e of strain with respect to time a t constant load. T h e device will also measure the d e c r e a s e in load with respect t o tirne a t constant strain. Shell D e v e l o p m e n t is using t h e C h e v e n a r d Creep and Relaxation Tester t o determine the life expectancy of pip ing and the t e m p e r a t u r e and strain limitations of metals.
• Scientifically designed for maximum pro tection of personnel working with radioactive or toxic materials. • Aerodynamically efficient design permits sub stantially lower face velocities— 1 /* to Vi less than conventional hoods. • Constant volume exhaust with sash up or down. • Savings of $100 to $800 per year p e r hood on heating and air conditioning costs. W A N T PROOF? W r i t e - t o d a y — f o r f r e e copy of n e w 2 4 - p a g e b o o k " A i r f l o w Control F u m e Hoods"· Gives characteristics, applications, specifications»
y&tv&utzee JVL/a. Co. J. A. Campbell, President 5 0 1 2 S. Center St., Adrian, Mich. REPRESENTATIVES
IN
PRINCIPAL
" f o r Scientists Everywhere19
BURRELL
CITIES
• Rubber tubing e x p a n d e r is being of fered by Arthur H. T h o m a s Co. T h e expander stretches t u b i n g for easy in sertion of glass t u b i n g . Ε1 • Vaporizer r e g u l a t o r for pressure con trol of liquid samples being introduced into analyzers i s n o w available from Consolidated Electrodynamics. Ε2 • Standardized proportioning pump featuring plug-in r e a g e n t end has been developed b y Proportioneers. T h e n e w units are available in capacities from as low a s 0.8 gal. p e r hr., to 900 gal. per hr. Ε3 • High s p e e d c h e c k e r is now in pro duction by T h e Solartron Electronic Group, L t d . , of Surrey, England. T h e unit is said t o weigh, u p to 60 items per minute, with one operator and to h a v e a maximum error of 0.29&. Ε4 • Castaloy c h a i n d a m p , by Fisher Sci entific, is designed t o allow a lab worker to s e c u r e glassware and other apparatus without c h a n g i n g hands. E5
New STANTON THERMO-RECORDiNG BALANCE ζ£±*±
Heats, Weighs and Records Simultaneously "Heat to constant weight" is accomplished research or for process control. Features include automatic electric weight wear resistant knives, sapphire planes and damping.
easily in * loading;, full air-
STANTON THERMO-RECORDING BALANCE Mode! TR-1 J Electric weight loading, twin electronic recorder and standard furnace with simple program control. A cam, which can be modified, provides uniform rate of heating. Sensitivity 1 mg. Burred Cat. No. 2-569-41
4,550.00
Price listed is F . O . 8 . Pittsburgh,
Pa.
Other models available—for tbermo-recording or recording only—sensitivities 1 mg. or 0.1 mg. Ask for Bulletin No. 329
B U R R E L L Scientific
^LlIZ 5582
CORPORATION
Apparatus
and
Laboratory
Supplies
Fifth A v e n u e , Pittsburgh 19, P e n n s y l v a n i a
C & Ε Ν NOV.
12,
19 5 6
v Ore Roasters This pair of 4-foot diameter fluid b e d reactors, designed a n d built b y Battelle Institute, i s ready for use in the Insti tute's s t u d y of full scale ore treatment processes.
low cost instruments for high vacuum operations
VACUUM
EQUIPMENT & Dust protected lift truck has been de veloped b y Yale & T o w n e Mfg. Fea tures to reduce dust effects on parts •are: tandem air cleaning system; heavy duty oil filter; heavy duty air filter o n the crankcase breather pipe; deflector plate at the bottom of the truck; and enclosed venerator and voltage regula tor. ° Ε6 • Unitized Autronic controls are being made by The Swartwout Co., featuring plug-in construction for ready buildup of a control system. Ε7 • Pre-assembled pilot plant has been «designed by Industrial Process Engi neers. Packaged unit is shipped intact, xvith all valves and piping. Main unit is a 35-gal., stainless steel reactor, with heating and cooling, feed tank, con denser, decanterj two receivers, con trols, and instruments. 18
GAUGE
• Polyethylene Buchner funnel has been added to the line of polyethylene lab ware available from Pioneer Plas tics. The size is for 70-mm. niter paper. Ε9 • Three sulfur titrators for u s e with the combustion-titration method of an alyzing for sulfur in steel, iron, and other materials have been developed by Laboratory Equipment. T h e three models are automatic, semiautomatic, and manual, the latter requiring the operator to judge the color in the titration vessel by eye. Ε 10 {Continued on page 5592) I
Further useful information on keyed Equipment items men tioned is readily available . . . Use handy coupon on page 5584
Provides measurement between 5 a n d 1000 microns with overall accuracy of 2%. Voltage stabilized circuit. Temperature compensating. Pro vision for connection t o continuous recording a n d controlling equipment. 7 " χ 6 * χ Ί". Shipping w t . 12 lbs. 110 volt, 60 cycle. Price, less gauge tube
$ 7 5 . 0 0
Tubes each
1 5 . 0 0
November 1 2 , 1956
Readers' Information Service
WATER-COOLED OIL DIFFUSION PUMP
Use this h a n d y self mailer to obtain further information o r literature. Simply mark, clip coupon, fold, and mail
compact, sturdy, a l l metal pump with outstanding performance char acteristics. Will operate against a fore pressure of 0.5 mm which per mits operation with average mechan ical vacuum pump found in a n y chemical laboratory. 2-stage. Speed, 10 liters per second at 10-* m m . Ultimate vacuum, 5 X 10-* m m . Easy to clean. Requires only 15 m l of pump fluid. 170-watt heater operates on 110 volts.
Price $ 7 6 . 0 0
^
Every week C&EN's editors survey a large volume of valuable scien tific/ technical, and business information issued in the form o f product announcements, booklets, catalogs, data sheets, etc. This material is digested and presented in several departments. For your conven ience this coupon is provided to facilitate requests for further informa tion on these items as well as on products and services mentioned in advertisements. _ Position-
Name_ 1
Ο
CompanyStreet
-
City
-Zone(Ρlease print
P>
LABORATORY
GLAND
For rotary seals, thermometer ports, entry tubes. Many advantages in addition to low price over mercury-sealed or precision-bore stirrers. Teflon® construction, useable up to 200°C with any material except metallic sodium. Handles thermometers w i t h standard taper joints; allows depth regulation of bulb. Wear-compensating. Vacuum tight t o 5 X 10-6 mm. Available in 6 mm and 10 m m shaft. Won't break or "freeze." Thousands in use. Dept. CEN-11
Price $ 1 1 . 7 5
A R T H U R F. S M I T H
CO.
311 Alexander St., Rochester 4, N.Y.
-State-
o r type)
CLIP C O U P O N — F o l d A l o n g T h i s L i n e — F a s t e n ( S t a p l e , T a p e , G l u e ) — M A I L
I
3 c STAMP
To:
I I I I I
>
y
Spraying Systems, -will handle from "73 gal. per min. at 1 5 p.s.i. t o 330 gal. per min. a t 300 p.s.i. The nozzle bias a 2-iii. male pipe connection. E13 • Pressure burners, by Synchronous Flame, are designed to be able t o oper ate against combustion back pressures of 3 in. of water or more. Boiler ranges of 10 t o 150 hp. can b e fired with different sizes of these burnexrs, with gas, oil, and combination gas-oil firing available. ΕΊ4 • Manufacturing
vinyl
foam
is t h e
object of a new machine now available from Dennis Chemical. The FayFoamer (XJ. S. Patent 2,763,475) o p erates at low pressures and at best efficiency at vinyl foam density o£ 5 lb. per cu. ft. or more. Ε 15 • Vacuum forming machine for sheet plastic is now being manufactured by Kroll Equipment. The self-contained machine has a 30 X 30 in. capacity--can drape draw to a depth of 16 in. Ε 16 • Purifying unit, by V. D . Anderson Co., separates mists, liquids, and solids from gases or vapors by means of baffles and vanes and centrifugal force. The company guarantees an efficiency of 99% or better under normal oper ating conditions. Ε 17 • Reflecting objective microscope^ by The Ealing Corp., uses mirrors to elim inate chromatic aberration. Work in visible, -ultraviolet, and infrared Bght is possible with the microscope, the company says. Ε 18 • Box car loader, by Ottumwa Box Car Loader Co., of aluminum constructed, will load a box car in less than an iiour with no trucking, carrying, or lifting needed, according to the company. Ε 19 • Centrifugal separator bas been de signed b y E>orr-Oliver for continuous operation at elevated temperatures and pressures, temperatures near 300"° F. and pressures around 10O p.s.i. T w o units are available, a laboratory size, handling up to 2 0 gal. per min. and a production of 250 gal. per mio. at 4OO0G. E20
