IN THE WORKS
1
phenethyl alcohol (2-phenyl ethanol) J §&*£ •CH-CH 2 - coKsassaAUY AVAILABLE Colorless Liquid ' Mol. Wt 122.14 Purity .... „_ 99-100% B.P. „220°C./760 mm. M.P -27 e C. D 2 °- - 1.0245 n 20 τ .5323 n D Solubility in water 2 Gm./lOO Gm. water Solubility of water in phenethyl alcohol 9 % a t 20-25 e C. Viscosity.. .0.076 poise of 25°C We recommend its consideration • as cvrêagent for the introduction of the phenethyl -group • as anxinte"rTriediat& for the synthesis of pharmaceuticals • as a unique solvent and coupling agent SAMPLE,. LITERATURE & PRICES ON REQUEST VAN ublERINGEN - AEBIER, INC. 521 WEST 57th STREET NEW YORK 19 NEW YORK • A preparative ultracentrifuge to con- centrate, purify, and classify macro- molecules and colloidal materials- proteins, viruses, enzymes, etc. Inter- changeable rotors, vacuum chamber, refrigeration, automatic electronic controls for 40,000-ipm electric drive. Send for complete information. ' SPECIALIZED INSTRUMENTS -'tfticrp CORPORATION PRODUCTION IN THE WORKS Dimples save critical stainless steel „ . gallon test tube A 70,000 D IMPLES" are helping the Pfaudler Co., Rochester, Ν. Υ., save half the critical stainless steel formerly needed in their manufacture of high pressure processing vessels for the chemical and food indus- tries. Pfaudler's chief engineer, Robert G. Chapman, in charge of the development, states that the company is making the hard-to-get metal go twice as far by punch- ing cup-shaped indentations, called dim- ples, into sheet stainless steel. Then the bottom of each dimple is punched out. The sheet steel, which is to form the jacket for the processing vessel, is then placed in position around the vessel and welds are made around each hole. The resultant jacket (see picture) formed in this way can withstand pressures up to 450 pounds per square inch which are generated by such heating or cooling mediums as steam, brine, freon, or ammonia. Stainless steel dimples which are helping the Pfaudler Co. cut their use of this critical metal on their liner jackets by half Prior to the development of the dim- pling technique, solid stainless Steel of very heavy gage was required. The company now finds that they are realizing con- siderable savings because they are per- mitted to use a much lighter gage of stainless steel. Moreover, they find that the new procedure lends considerable strength to the construction and design. In addition, this new design of theirs al- lows them to now incorporate a particular type of construction in the jacket area. The new type of construction allows for directing the flow of a heating or cooling medium, thus in turn, accelerating the heating or cooling performance. A Giant Test Tube At times many chemical engineers have wished for just such a giant test tube as is shown in the accompanying picture while they were working on a large project that kept developing quirks not indicated previously by pilot plant or bench tests. Those types of problems açe part and parcel of the problems being investigated in this 20 foot diameter, 30 foot high, 70,000-gallon tank recently erected by Mixing Equipment Co., Inc., Rochester, Ν. Υ. This ordinary looking storage tank is really a giant test tube which is helping to solve chemical engineering problems in a variety of ways The test tube tank, as it is called, per- forms a variety of functions. First and foremost, it is being used to secure ac- curate, quantitative data on the blending of fluids in big tanks. The tank is equipped to study performance on single and mul- tiple installations of side entering mixers, location of the multiple units, and the angle of entrance of the mixers. More- over, comparisons between mechanical mixers, air agitation, and liquid jets can be made. The tank is further adaptable in employ- ing strain gage and torque metering in- struments, special equipment for ultra- high-speed motion photography of fluid mixing processes, pilot plant equipment for some heat transfer operations, gas dis- persion, solids suspension, and other mix- ing operations. 2812 CHEMICAL AND ENGINEERING NEWS
Transcript of IN THE WORKS
phenethyl alcohol (2-phenyl ethanol) J
§&*£
•CH-CH2-coKsassaAUY
AVAILABLE
Colorless Liquid ' Mol. Wt 122.14 Purity . . . . „ _ 9 9 - 1 0 0 % B.P. „ 2 2 0 ° C . / 7 6 0 m m . M.P - 2 7 e C .
D 2°- - 1.0245
n 20 τ .5323 n D
Solubil ity in water 2 G m . / l O O Gm. water Solubil ity of water in phenethyl alcohol 9 % a t 20-25 e C. Viscosity.. .0.076 poise of 2 5 ° C
W e recommend its consideration
• as cvrêagent for the introduction of the phenethyl -group • as anxinte"rTriediat& for the synthesis of pharmaceuticals • as a unique solvent and coupling agent
SAMPLE,. LITERATURE & PRICES ON REQUEST
VAN ublERINGEN -
AEBIER, INC. 5 2 1 W E S T 5 7 t h S T R E E T N E W Y O R K 1 9 N E W Y O R K
• A preparative ultracentrifuge to concentrate, purify, and classify macro-molecules and colloidal mater ia ls -proteins, viruses, enzymes, etc. Interchangeable rotors, vacuum chamber, refrigeration, automatic electronic controls for 40,000-ipm electric drive. Send for complete information.
' SPECIALIZED INSTRUMENTS -'tfticrp CORPORATION
PRODUCTION
IN THE WORKS
Dimples save critical stainless steel „ . gallon test tube
A 70,000
DIMPLES" are helping the Pfaudler Co., Rochester, Ν. Υ., save half the critical
stainless steel formerly needed in their manufacture of high pressure processing vessels for the chemical and food industries.
Pfaudler's chief engineer, Robert G. Chapman, in charge of the development, states that the company is making the hard-to-get metal go twice as far by punching cup-shaped indentations, called dimples, into sheet stainless steel. Then the bottom of each dimple is punched out. The sheet steel, which is to form the jacket for the processing vessel, is then placed in position around the vessel and welds are made around each hole. The resultant jacket (see picture) formed in this way can withstand pressures up to 450 pounds per square inch which are generated by such heating or cooling mediums as steam, brine, freon, or ammonia.
Stainless steel dimples which are helping the Pfaudler Co. cut their use of this critical metal on their liner jackets by half
Prior to the development of the dimpling technique, solid stainless Steel of very heavy gage was required. The company now finds that they are realizing considerable savings because they are permitted to use a much lighter gage of stainless steel. Moreover, they find that the new procedure lends considerable strength to the construction and design. In addition, this new design of theirs allows them to now incorporate a particular type of construction in the jacket area.
The new type of construction allows for directing the flow of a heating or cooling medium, thus in turn, accelerating the heating or cooling performance.
A Giant Test Tube At times many chemical engineers have
wished for just such a giant test tube as is shown in the accompanying picture while they were working on a large project that kept developing quirks not indicated previously by pilot plant or bench tests. Those types of problems açe part and parcel of the problems being investigated in this 20 foot diameter, 30 foot high, 70,000-gallon tank recently erected by Mixing Equipment Co., Inc., Rochester, Ν. Υ.
This ordinary looking storage tank is really a giant test tube which is helping to solve chemical engineering problems in a variety of ways
The test tube tank, as it is called, performs a variety of functions. First and foremost, it is being used to secure accurate, quantitative data on the blending of fluids in big tanks. The tank is equipped to study performance on single and multiple installations of side entering mixers, location of the multiple units, and the angle of entrance of the mixers. Moreover, comparisons between mechanical mixers, air agitation, and liquid jets can be made.
The tank is further adaptable in employing strain gage and torque metering instruments, special equipment for ultra-high-speed motion photography of fluid mixing processes, pilot plant equipment for some heat transfer operations, gas dispersion, solids suspension, and other mixing operations.
2812 C H E M I C A L A N D E N G I N E E R I N G N E W S
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