EQUIPMENT
IBM Enters Process Computer Field New 1710 system is company's first for process control, results from studies with various companies IBM has finally made its move into the process computer field with the introduction of its new 1710 system (C&EN, March 13, page 41). Until now, IBM has had no commercial unit available for this purpose but has been moving in this direction through joint development projects with various companies, among them Standard Oil (Ind.) and Standard Oil of Calif. The unit is designed for broad application, IBM explains. It can be used for:
One advantage of the 1710 system, IBM points out, is its flexibility for accepting input signals. The basic unit operates with analog signals in the range of ± 5 0 m v. However, standard modular system cards are available to match inputs of 1 to 5, 4 to 20, or 10 to 50 milliamp. d.c. Thus, the sys-
tem can be used with most of the commercial electric instruments without any need for changing the program. Depending on options, the 1710 costs between $111,000 and $135,000. Or it can be rented for $2600 to $3300 a month. IBM can be expected to bring out more commercial process computers, eventually offering a line with units having varying capabilities. The company is now working on a closed-loop process computer to replace the 704's used in developing the control systems for California Standard and Indiana Standard. It's also working with Du Pont to develop dynamic computer control for an acrylonitrile pilot plant at Du Pont's Gibbstown, N.J., laboratorv.
• Process optimization to provide operating information in open-loop control. • Process study to perform mathematical operations such as correlation and regression studies, helpful in developing a mathematical model for subsequent computer control. • Quality control to take instrument readings of products being tested and then to run a mathematical evaluation of individual item or group performance. The 1710 consists of a 1620 computer and the 1711 data converter, along with the 1621 paper tape reader and tape punch. The 1711 data converter automatically scans analog input signals at a rate of five per second. The basic unit comes with 10 inputs; others can be added in increments of 10 to give up to a total of 300. Seven 10position data entry switches can also be added. Included in the unit are a four-digit analog-to-digital converter and a digital clock that indicates time in hours and tenths and hundredths of hours. Feeds Signals. The 1711 feeds analog signals to the 1620 computer, a variable word length system able to make 100,000 calculations a minute. Fully transistorized, the basic 1620 has a magnetic core storage of 20,000 positions. However, IBM explains, this can be expanded to 40,000 or 60,000 positions. Other options available include punched card input and output and indirect addressing. 54
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Furnace Adds to Electron Beam Refining Capacity After several months of trial runs, this 300-kw. electron beam furnace is now on stream at Stauffer Metals Division's Richmond, Calif., plant. With a capacity of about 120 tons a year (depending on the feed), the new furnace is claimed to be the world's largest, boosts total U.S. capacity for electron beam-refined refractory metals by about 50% to approximately 360 tons a year, according to Stauffer. The furnace is designed to continuously refine and cast ingots up to 8 in. in diameter and 42 in. in length. Electron beam refining produces high purity refractory metals and alloys such as tungsten, molybdenum, niobium, tantalum, vanadium, hafnium, zirconium, uranium, nickel alloys, and stainless steels. These metals find use in missiles, jet aircraft, and nuclear equipment where high strength at high temperature is important. In the technique, a metal target in a high vacuum is bombarded by a stream of electrons. This can give temperatures exceeding 6000° F. and melts the metal. Impurities having vapor pressures higher than the metal itself vaporize off.
for prompt and dependable precious metals recovery service Engelhard offers the most modern and complete facil ities and technology for maximum precious metal re covery. Service is prompt, highest purchase prices are assured in refining of spent metal catalysts, jewelry filings, floor sweeps, sludges, other industrial residues. Values based on results of mutually acceptable assays; recovered precious metals purchased by Engelhard, credited to your drawing account or returned to cus tomer. Contact local Engelhard Service Representative for assistance in recovery, separation, transportation problems. REFIN ING D I V I S I O N 429 DELANCEY STREET · NEWARK, N. J.
(or detection and measurement of oxygen impurities in other gases In metallurgical and chemical processes requiring an oxygen-free atmosphere, the Minoxo Indicator pro vides a means of insuring that failure of purification or ingress of atmospheric oxygen through an unsuspected leak does not cause costly spoilage. The Minoxo Indi cator . . . measures traces of molecular oxygen in other gases—from 0 to 10 parts per million, and from 0 to 100 PPM. High sensitivity and rapid speed of response enable it to be used for laboratory investigation and production quality control. INDUSTRIAL
EQUIPMENT
MINOXO
DIVISION
GAS EQUIPMENT SECTION
113 ASTOR STREET · NEWARK, N. J.
Please send literature as indicated below, addressed to my attention:
ENGELHARD INDUSTRIES, INC.
Π Precious Metals Recovery
• Minoxo Indicator
NAME E X E C U T I V E
O F F I C E S :
TITLE 113
ASTOR
STREET
·
NEWARK
2.
NEW
JERSEY
FIRM SALES OFFICES: C H I C A G O · DALLAS · DETROIT · HOUSTON · LOS ANGELES · NEW YORK · ORLANDO · PROVIDENCE * SAN FRANCISCO · WASHINGTON, D. C.
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BRIEFS Hydrogen purifier that produces ultrapure hydrogen from impure hydrogen sources has been introduced by Milton Roy Co., Philadelphia, Pa. Standard models for small volumes (40 to 100 ml. per min.) weigh 10 to 15 lb.; units for larger capacities (5 to 50 cu. ft. per hr.) weigh about 60 lb. Ε 1
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I t exhibits excellent stability in corrosive environments.
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• I t is soluble in hydrocarbons . . . as the free diamine or as its salts of high molecular weight acids.
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• I t makes normally water-accepting surfaces oil wettable. • I t can be alkylated, oxyalkylated, quaternized or converted to salts of acids by neutralization. Nalcamine G-39M has been designed expressly for use in products where pharmaceutical purity and color are not required. Thus it offers you all these important properties for a top corrosion inhibitor at a really down to earth cost!
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CH2CH2NHi Nalcamine G-39M is a mixture of diamine* imidazolines, consisting predominantly of the diamine shown above where the mixed a Iky I chains are heptadecenyl and hep·* tadecadienyl. TYPICAL ANALYSIS
Apparent Molecular Wt.. 422 Apparent Combining Wt.. 211 % Imidazoline 94.0 % Titratables 99.2 Spec. Gravity a t 60°F.. .0.948 Pour Point °F 25 Viscosity at 60°F. cps 334 Density—Lbs. per gallon. 7.91 Color Black
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SHIPPING
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Nalcamine G-39M is shipped in fifty-four gallon, bung, unlined, n o n - r e t u r n a b l e steel drums. Weight of each drum is approximately 420 lbs.
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HANDLING
N a l c a m i n e G-39M can be handled or stored in iron or mild steel. It should be stored in a closed container.
Two angle drives are being offered by F. W. Stewart Corp., Chicago, 111. The 9056 H F (T-drive) and 9056119 (right angle drive) have λ/Α-\η. diameter shafts cut to a 1 / i e -in. flat. They have an ultimate static torque of 25 in.-lb. with a backlash of 6°. Gear ratios of 1:1, 1:2, and 2:1 are avail able. Ε3
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Rubber hardness gage, Model 1600, has been introduced by Rex Gauge Co., Glen view, 111. The gage reads to within ±1/2 Durometer point on the Durometer A scale, and the company claims that the gage never requires recalibration or adjustment. It weighs 8 oz. and comes in a mahogany case. E2
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Vapor pressure osmometer for deter mining molecular weights up to 20,000 has been introduced by Mechrolab Inc., Mountain View, Calif. The os mometer measures temperature differ ences caused by differential mass transfer between a sample drop of test solution and a reference drop of pure solution. With organic solutes in ben zene, the osmometer can measure molecular weights of up to 5000 within 17c, the company says. Ε4 Laboratory vacuum system that can be used for high vacuum depositions of lightweight metals is available from Central Scientific, Chicago, 111. This system features an implosion-proof, 18-in. diameter bell jar that can be evacuated within 5 min. to a vacuum of 1 micron Hg with an ultimate vacuum of 2 Χ 10 - 6 mm., Cenco says. A plastic window gives full visibility of the vacuum chamber interior. Ε5
NALCO CHEMICAL C O M P A N Y 6199 West 66th Place
Chicago 38, Illinois
CHEMICALS
Subsidiaries in England, Italy, Mexico, Spain, Venezuela and West Germany In Canada—Alchem Limited, Burlington, Ontario
CHEMICALS
Nalco
Serving Industry through Practical Applied Science
56
C&EN
MARCH
2 0, 1 9 6 1
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Further useful information on keyed Equipment items men tioned is readily available . . . Use handy coupon on page 66 ^
