Tech Exchange

Hydrogen Degassing System Features Ceramic Rotor

A system for degassing hydrogen uses silicon nitride ceramic rotors. The technology’s rotors stir molten aluminum and disperse the gas. By adding bubbles of an inert gas, hydrogen is drawn out from the metal, which otherwise would cause voids and substantially weaken castings.

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CV Number Enables Tunable Ball Valves

A ball valve for process systems has a field-adjustable CV number. The CV number allows the valve to be “tuned” for its system. The ball, controlled by an actuator, is moved 0–90 degrees. An adjustable V-port then adjusts the CV number.

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Industrial-Scale Gas Separation

A company has a process stream made up of a variety of gases and molecules. They seek effective industrial-scale technologies that separate methane from other hydrocarbons in the stream, as well as from lighter and heavier molecules. The large-scale gas streams must be separated into their constituent molecules at purity rates above 90%. Proposed solutions should address boundary conditions, required or expected pressures, operating temperatures, and compatibility with various molecules and gas stream contaminants. The technologies must also be feasible for process streams that run in the 100,000 tons per annum or greater.

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Low-Water Cleaning

The manufacturing of consumer products, foods, and pharmaceuticals requires the implementation of stringent cleaning requirements of all batch, semi-continuous, and continuous processes equipment. High standards of hygienic quality must be maintained, and the cleaning process must ensure that there is no cross-contamination of products. A client needs to reduce the amount of water required to clean stainless steel-based manufacturing plant equipment, such as vessels, mixers, and pipework. New chemical and/or process technologies must clean products of wide-ranging viscosities. Potential solution areas include self-cleaning surfaces, surface- modification technologies, and air-based cleaning.

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Safety Glass Offers Near-Infrared Heat Reflection

New safety glass technology reflects 50% of solar radiation and transmits 70% of visible light. A non-micellar twisted nematic liquid crystal features cholesteric near-infraredreflecting properties, along with at least one near-infrared absorptive material. The composition can be used as a layer — optionally in conjunction with polymeric films, polymeric sheets, and rigid sheets — to form multilayer laminates. The multilayer shields are useful as solar control windows to reduce energy consumption and cool the interior of automobiles or buildings.

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Microwave System Accelerates Concrete Curing

A Microwave Irradiated Pyrogen (MIP) system speeds up the concrete curing process. The use of a microwave allows the technology to operate in cold weather. Because the MIP accelerates the heating point, colder countries like Russia and Canada can use the curing system to build roads, tunnels, and other structures. The technology can also be used with precast concrete, mass concrete, and other construction needs.

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Viscosity Thickeners for Adhesive Polymer

A client uses sodium and potassium stearates to build body and viscosity in a polymer dispersion intended as an adhesive. The stearates adversely affect shear strength after the dispersion cures. Non-stearate thickeners, or different stearates, are needed. By varying the nature of the fillers and thickeners, and possibly by varying their loading, post-cure compression shear strength of 2000-2500 pounds must be achieved. Lesser strengths may also be of interest. The viscosity thickeners must bond wood and similar porous substrates, as well as nonporous surfaces. The adhesive must be applied smoothly, as though poured.

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