ECO SHlSiilMMÉ NEWS the big name in small pumps for the process industries

Pumping Notes ο

Metering Melamine Resin Solution. A Massachusetts paper mill uses Eco G E A R -CHEM Pumps to add melamine resin to paper stock to impart wet strength. Super­intendent has found tha t continuous flow metering directly to the fourdrinier head boxes, with GEARCHEMS, offering ± 1 per cent reproducible accuracy, provides excel­lent results.

Pumping Sulphuric Acid. A South Texas cotton oil processor recently returned a CENTRI-CHEM Pump for its first complete parts overhaul after two years in sulphuric acid service. Is this typical of the life ex­pectancy of this Carpenter 20 stainless steel pump in sulphuric acid service? Life expectancy in chemical pumps is al­ways a devious problem as slight temper­ature, viscosity, pressure or concentration changes can materially reduce or increase mechanical life. The above experience is average. Other CENTRI-CHEM pumps have been in operation in sulphuric acid service for about four years. Some have been short­lived due to misapplication on acid temper­atures beyond the range for which Carpenter 20 stainless steel is recommended.

Pumping Inhibited Styrène. A large syn­thetic sponge manufacturer, utilizing in­hibited styrene, selected the self-priming GEARCHEM Pump in 316 stainless steel for transfer of medium from drums to reactors.

Pumping Calcium Chloride Brine. A lead­ing petroleum research laboratory found that it can best handle calcium chloride brine with an Eco GEARCHEM Pump in Hastelloy* B.

Pumping Viscose Resin. Polycarbonate resin in a chlorinated solvent vehicle, with viscosity of about 2450 SSU at temper­atures from 50 to 200°F is successfully handled with a GEARCHEM Pump in 316 stainless steel with Hastelloy gears.

Pumping Acid Solutions of Rare Earths. Eco CENTRI -CHEM Pumps are dolly-mounted, moved from system to system as the cycle of operation progresses in these ion exchange installations at a mid-western processing plant.

*Union Carbide Trademark

Face Creams Can't Be Whipped

To facilitate use at many locations in batch processing, this ALL-CHEM Pump rides with the pressure leaf filter it serves. Dual manifold also permits by-passing the filter press for other pumping services.

Many of the materials and semi-finished products handled by Paris Cosmetics, Inc., in their manufacture of face creams, lotions, lipsticks, rouges, etc., for leading cosmeti­cians— could easily be whipped into unbe­lievable, unmanageable froths if pumped by ordinary equipment.

Tha t is why Paris uses Eco A L L - C H E M Pumps with their linear, non-foaming flows, ideal for shear sensitive emulsions, in trans­ferring all these compounds from one proc­ess to the next.

Perfect for Filter Press A typical use of these A L L - C H E M Pumps at Paris is pumping compounds from one holding tank to another via a pressure leaf filter. Maximum pumping rates are 10 gpm against low heads of approximately 12 psi.

Handles Warm Waxes Paris has found that the A L L - C H E M Pump is also ideal for pumping waxes at temper­atures of 75° to 80° C. Other basic materi­als pumped include alcohols, glycerines, fatty acids.

Portable Units for Batch Compounding Process steps and materials vary with each product and customer specifications; hence compounding at Paris Cosmetics is, by necessity, a batch operation. For this rea­son, the ALL-CHEM Pumps are mounted as

portable units so that they provide the greatest convenience and flexibility of use. These pumps, like all other processing equipment and piping, are constructed of 316 stainless steel, with Teflonf impellers and bearings for positive, non-contaminat­ing service.

Pumps Withstand Abuse Paris reports good service on all their ALL-CHEM Pumps, despite the continual hazard of abuse by mechanically inexperienced personnel. A L L - C H E M Pumps have been standard equipment at Paris Cosmetics since 1956.

iduPont Trademark

ALL-CHEM Pumping Units like this one have been in continuousservice for periods up to 4 years with a minimum of repairs.

ECO ENGINEERING COMPANY · 12 New York Avenue · NEWARK 1, N.J.

ECO ENGINEERING NEWS

More Power to NICAD Batteries

A temperature check of the potassium hydroxide bath at NICAD reveals that CENTRI-CHEM recirculating pumps have solved the problem of keeping uniform temperature throughout the bath.

Gould-National Batteries, NICAD Divi­sion, St. Paul, make the famous NICAD rechargeable sealed batteries, hailed by-sportsmen and widely used in cordless elec­tric shavers. An important step in the production of these nickel-cadmium batteries is the im­pregnation of the plates by immersion in hot solutions of potassium hydroxide and nickel nitrate. In this process, temperature and concentration of the bath solutions must be kept uniform to insure uniform high quality to meet Gould-National stan­dards, and reduce rejects. Simple immersion in static solutions was not satisfactory as stratification of the solu­tions presented varying temperatures and concentrations in different areas in the tanks. To overcome this difficulty, Gould-National employs Eco C E N T R I - C H E M P u m p s of Carpenter 20 stainless steel %o continuously recirculate, agitate and mix the hot corro­sive bath solutions, without contamination of the media. The CENTRI-CHEM Pumps draw the solu­tion from the top of the tanks, which are heated by means of water jackets, and then pump it through a pipe manifold to the dis­tribution nozzles in the bottom of the tanks.

The resulting turbulence assures uniform concentration and temperature of solution at every point in the tanks—hence all bat­tery plates receive uniform exposure. Results: fewer rejects, increased produc­tion, lowered costs, a uniformly better product.

These non-contaminating CENTRI-CHEM Pumps of Carpenter 20 stainless steel throughout, recirculate hot caustic solu­tion at the rate of 10 gpm in each im­mersion tank.

ECO Products for Handling Corrosive arid Hazardous Processing Fluids

ALL-CHEM® Rotary Pumps PUMPMOBILE Portable Pumping Units MINILAB® Rotary Pumps GEAR-VAC® Valves GEARCHEM Gear Pumps CHEMICAL DISPENSING VALVES CENTRI-CHEM® Centr i fugal Pumps Factory Mutual Approved

Ask for literature on any or all of these ECO Products

Something to Get Your Teeth In

Acco Polymers, a division of Acralite Co., Brooklyn, Ν. Υ., manufacture acrylic poly­mers used in the molding of dentures, which cure at low temperatures, without distortion, thus assuring superior fit and dimensional stability. These American Dental Association ap­proved materials—as well as other poly­mers, custom compounded to meet indi­vidual customer specifications—require ex­tremely exacting processing procedure.

Almost Pilot Plant Scale Consequently, Acco's manufacture is quite different from that of other giant firms in the plastics industry. Production is planned on almost a pilot plant scale and all equipment must meet exacting requirements of performance and dependability.

Acco Selects Eco Four years ago, Acco faced the selection of a pump type most suitable for their re­quirements in handling methyl methacry-late and other monomers from drums to re­actor and to transfer intermediate liquids from reactor to evaporator or other process equipment. The Eco ALL-CHEM Rotary Displacement Pump in 316 stainless steel with Teflon im­pellers, bearings and seals, was selected.

Very Little Maintenance Today, after four years of experience with this Eco Pump design, Acco is still highly pleased because, according to Mr. S. Rubinstein, plant manager, " I t is a pump we can depend upon. I t has never caused us any lost time in polymer production. I t requires very little maintenance—only an occasional replacement of Teflon Bearings or packing."

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ECO ENGINEERING COMPANY · 12 New York Avenue · NEWARK 1, N.J.