Every two years since 1964, Chemical Processing has bestowed Vaaler Awards on products and services that can significantly improve plant operations and economics. To be eligible for this year's awards, a product or service must have been commercialized in the United States between May 2011 and June 2013.
The awards are named in honor of John C. Vaaler, editor in chief of Chemical Processing from 1946 to 1961, and chairman of the magazine's editorial board from 1961 until his death in 1963.
Chemical Processing's Editorial Board, which consists of technical professionals with diverse responsibilities and from a variety of industry sectors (see sidebar), evaluated 18 entries in 9 categories for technical significance, novelty or uniqueness, and breadth of applicability. This impartial panel didn't have to bestow any awards — but chose to honor five products:
• Qdos30 metering pump from Watson-Marlow;
• Elite CMFS Coriolis flow meter from Micro Motion;
• Tigerflex Voltbuster hose from Kuriyama of America;
• Process Innovator from Epcon International; and
• EnviroSol 531 chemical cleaning process from Perigee Solutions.
Metering Pump Combines Better Performance with Less Maintenance
The Watson-Marlow Qdos 30 peristaltic pump, which was launched in June 2013, provides accurate, linear and repeatable metering under varying process conditions. The no-valve pump doesn't need recalibration because of changes in pressure, solids' content or viscosity. It will continue to pump even when a feed chemical is subject to off-gassing. Unlike traditional diaphragm metering pumps, for which it is a drop-in replacement, the Qdos 30 doesn't require ancillaries such as backpressure valves, degassing valves, pulsation dampener, foot valves and strainers. It can maintain accuracy and repeatability for up to six months without maintenance.
The Qdos 30 pump features the patented ReNu pump head, which is a fully contained tube-and-rotor assembly that can be replaced without tools and without risk of exposing operators to fluids. In addition, the pump head has an integral optical sensor to detect leaks in the fluid path.
The Qdos 30 pump can provide flow rates from 0.001 to 8 gal/h (0.1 to 500 mL/min) at 100 psi (7 bar). The unit includes a 3.5-inch full-color display that gives instant pump status, and is configurable to provide a wide variety of information, including percentage of chemical pumped from a discrete source and the amount remaining. The pump comes with various control options, including remote control for process security. The unit is NEMA 4X rated for washdown environments.
Coriolis Flow Meter Excels For Smaller Line Sizes
The Micro Motion Elite CMFS sensor platform, which was introduced in May 2013, precisely measures mass and volume flow as well as density in lines less than 2 inches in diameter or DN50, and is immune to process, mounting and environmental effects. The scalable platform features a compact, lightweight and fully drainable design that provides unmatched performance in critical and demanding applications, including batching, blending and feedstock control. The robust Coriolis flow meter affords accurate measurements even in challenging fluid conditions, such as changing densities, pressures, temperatures or viscosities. The meter also provides reliable and repeatable measurements in transient two-phase flow conditions. It maintains its specified performance over a 30:1 turndown ratio. Use of the meter can eliminate the need for complex inferred mass calculations.
The Elite CMFS line includes nine distinct sensor sizes in three compact footprints, from 1-mm to 50-mm nominal-diameter line sizes (1/12 in. to 2 in.). The meter delivers ±0.05% accuracy for liquid mass and volume flow, ±0.0002 g/cc liquid density accuracy and world-leading ±0.25% gas accuracy for flow rates of 0.04 lb/min to 1,980 lb/min (1 kg/h to 54,000 kg/h). It can handle temperatures from -400°F to 400°F (-240°C to 204°C), and pressures up to 6,000 psi (413 bar). It is suitable for hygienic, cryogenic and high-pressure applications. Micro Motion's Smart Meter Verification technology enables in-situ verification without tools or process shutdown. Integration with control systems is simple thanks to scalable transmitter platforms and flexible I/O connectivity.
Thermoplastic Hose Stops Static Discharges
The Kuriyama Tigerflex Voltbuster, which became available in October 2011, is the only heavy-walled thermoplastic hose that safely dissipates static charge in extremely high static material-transfer applications — and solves the widespread problem of "hose arcing." Its charge decay time constant is less than one second, which eliminates the risk of such discharges. The hose provides a lightweight and flexible alternative to metal and carbon-black-filled rubber hoses. It lasts longer than rubber and polyvinyl chloride hoses and is quieter than metal ones.