INDUSTRIAL A N D ENGINEERING CHEMISTRY
242
.Manufactures'
Publications
In asking for any of the bulletins described below, please desigaate them by number. Requests should be addressed to Advertising Manager, Industrial and Engineering Chemistry, 332 West 42nd St., Hew York, N . Y.. and all such requests must show business connection and title. CONTINUOUS DEODORIZING SYSTEM.
This
bulletin describes a continuous deodorizing system designed for service with edible a n d industrial oils. As this equipment is designed, it is thoroughly automatic. T h e manufacturers point out t h a t this is a particularly complete and compact plant which would give remarkable saving, both in operating cost a n d in improved quality of product. T h e 5000 pounds-per-hour capacity equipment m a y be installed and conveniently operated in a room 15 X 25 feet. T h e equipment can be furnished in many standard sizes from 500 t o 5000 poundsper-hour capacity. A.5-61. EXOLON T Y P E C MAGNETIC S E P A R A T O R .
This 4-page bulletin describes t h e new operating principles emploved in t h e Type C Double 30 separator. T h e manufacturers claim that this equipment makes it possible t o increase yields and raise p u r i t y of concentrates beyond t h e levels previously thought possible. T h e material t o b e separated is fed in granular form from a feeder t o a series of rotors, each highly magnetized b y induction a n d revolving in a magnetic field. Separation of magnetic from nonmagnetic material is accomplished by the different trajectories of t h e m a terials after passing through the rotors. A5-66. FELT-COTE. Asbestos felt-co-vered steel sheets for roofs a n d sides of industrial buildings are described in an interesting bulletin carrying this title. I t describes t h e manufacturing methods of building u p this protective steel type of construction material. In addition, there are a n u m b e r of drawings illustrating t h e details of Felt-Cote sections. Other drawings show the possibilities of using this type of material in a variety of different industrial establishments. T h e manufacturers recommend t h e m a terial for process industry service on t h e basis of its demonstrated ability t o stand u p under trving conditions. A5-60 FILTERS FOR T H E REFINEHV.
This
8-
page bulletin describes equipment d e signed for use in the oil refinery o n such work a s dewaxing, contacting, general clarification, handling of residuum a n d acids. T h e authors rely o n compact description a n d photographs t o show its working possibilities. T h e y have also made judicious use of line drawings t o give sectional details of certain types of equipment. A5-67. R O - B A L L G Y R A T I N G SCREENS.
An 8-page
bulletin describes this familiar line of screen equipment. A table of specifications covers t h e entire range of separations. Dimensions of screen surfaces, horsepower requirements, dimensions, and drive characteristics are included. A wide variety of different types d e signed for special services are pictured in t h e other pages of t h e bulletin. A6-64SINGLE-STAGE, T Y P E F S MOTOR BLOWERS.
This 12-page bulletin describes t h e d e sign features which are said t o give this equipment a particularly efficient performance a n d high degree of reliability. T h e a i r delivery is entirely free from pulsation within t h e useful range of operation, a n d power is consumed a p proximately in proportion t o t h e quant i t y of air delivered. The bullet in supplements a discussion of the theory of
air compression with photographs showing a wide variety of different applications. These range from grain transfer t o ore flotation a n d yarn drying. A5-65. SPECIAL FABRICATED PROCESSING E Q U I P -
MENT. This bulletin gives photographs of a large variety of processing equipm e n t which this manufacturer h a s built. T h e equipment ranges from h e a v y pressure vessels a n d autoclaves t o light mixers, condensers, a n d heat exchangers a n d covers most of t h e operations of t h e chemical industries. T h e bulletin concludes with a long list of special steels, in which fabrication h a s been carried through successfully. A5-B2. STRIP-CHART
RECORDING
INSTRUMENTS.
This 32-page bulletin is devoted t o t h e working description of a series of recording instruments, all of which h a v e t h e familiar strip-chart device. T h e line of instruments includes wattmeters, voltmeters, a n d ammeters in a number of different metals. Electrical elements employed in t h e construction of these instruments are t h e D*Arsonval, electrodynamometer, iron-vane repulsion, a n d resonant-circuit types of elements shielded against s t r a y fields. A highgrade spring-mounted jewel assures free operation a n d a long life for t h e instruments. T h e bulletin carries complete price a n d capacity tables for all t h e different instruments listed. A5-63
U. S. Is Cuba's Leading Source for C h e m i c a l P r o d u c t s ONTINUING t h e t r e n d t h a t h a s been C evident since 1934, C u b a n t r a d e in chemicals a n d related products recorded marked improvement last year, according to reports made public b y t h e Commerce Department's Chemical Division. Activity in t h e island's chemical-consuming industries resulted in an increase in imports of all classes of chemical products during the year. With prices of American products reported t o be lower t h a n those of certain European competitors, except for items of special quality or grade, t h e United States continued t o be C u b a ' s leading foreign supplier of chemicals a n d related products and in t u r n took t h e bulk of such chemicals as t h a t country produces for export.
VOL. 15, N O . 10
in aerial photography. Photographic m a p p i n g is o n e of t h e most important responsibilities of t h e a r m y staff. A special barium glass has been developed for airplane camera lenses which, in some cases, a r e designed with a focal length of 6.5 inches t o cover a plate 9 inches square, representing a n angular field of 95 degrees. Clays for melting pots, for which t h e United States was once dependent o n Europe, are now obtainable from 6 states a n d in some 13 varieties. At t h e b e ginning of t h e World W a r , n o commercial pots were available for melting o p tical glass. T h e iron content in t h e clays discolored t h e glass. Today, although clays of t h e highest purity are available, t h e iron content is still further reduced by means of a magnetic separator.
China's Chemical Trade Outlook
Bright
C
^HINA, with t h e exception of certain A drying oils, is preeminently an import chemical field, though t h e foundation of an independent chemical industry h a s been laid, a n d considerable progress along certain lines has been recorded, according t o information made public by t h e C o m merce D e p a r t m e n t ' s Chemical Division. Rapid modernization of t h e country is t h e key factor in t h e present outlook for China's chemical trade, creating as i t does a widening demand for various imported lines. Various industrial plants in course of erection or expansion in 1935 were completed last year a n d t h e Ministry of I n d u s t r y reported t h a t 116 new small factories and workshops were established by private interests. While Shanghai a n d C a n t o n continued to hold their positions in t h e country's industrial life, t h e establishment of industries in distant interior agricultural regions indicates t h e extent to which t h e country is becoming industrialized.
German Chemical Output A d v a n c e d S h a r p l y i n 1936 TEADY progress was recorded b y t h e S German chemical industry during 1936 with t h e o u t p u t increasing approxi-
mately 20 per cent, according t o a report made public b y t h e Commerce Department's Chemical Division. There was also a small increase in exports of chemicals a n d related products, t h e value of such shipments during the first 11 m o n t h s of t h e year being a b o u t 4 per cent above those for t h e corresponding period of 1935. Measured b y fuel consumption a n d t a k ing 1928 as t h e base year, t h e index of Germany's chemical o u t p u t stood a t a little b e t t e r t h a n 95 in September, 1936, U. S. Independent of Foreign which corresponds with 79.5 recorded in S o u r c e s for O p t i c a l G l a s s September of t h e preceding year. F r o m all indications further advances were PTICAL glass for fire-control instrumade during t h e last quarter of 1936. ments, named b y t h e A r m y - N a v y For t h e first time in several years, m a n y Munitions Board a s one of t h e 2 3 vital raw materials in t h e event of w a r , h a s branches of Germany's chemical indust r y were operating a t capacity a n d in reached a stage of perfection unexcelled some cases plants were enlarged t o enable in t h e world, according t o C a r l S. Hailo u t p u t t o keep pace with t h e rapid inauer, vice president of Bausch & L o m b crease in demand. Branches of t h e inOptical Co., where this t y p e of glass has dustry recording t h e greatest gains were been t h e subject of continuous research those supplying materials for building and since t h e World W a r . construction, agriculture, synthetic texT h e United States is now free of fortiles a n d resins, a n d mining and metallurgy eign sources of raw materials for t h e prowhile those manufacturing products of the duction of optical glass. American potmore staple variety such a s medicinals ash, which formerly came chiefly from the Strassfurt fields in G e r m a n y , is now and pharmaceuticals were less favorably affected. better a n d cheaper t h a n t h a t from a n y foreign source. Barium is n o w obtainEmployment of chemical workers inable from domestic sources. creased in keeping with expanded producBarium glasses a r e said t o b e of u n tion a n d in some branches a shortage of usual importance, owing t o t h e advances skilled workers was reported.
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