Single-Chip Chromatography, and More
Single-Chip Chromatography, and More
A major goal for the DOE-sponsored project is reduced energy consumption. Manufacturers in several industries currently face physical and technology barriers that limit the ability to effectively move and manage operations data throughout plant-floor environments, Honeywell said. As a result, they lack accurate real-time process information sufficient to control their processes, leading to sub-optimal or non-controlled processes and higher-than-necessary energy consumption.
Saving Trillions
Through improved sensing, wireless and control technologies of the kind to be pursued under the project, the DOE and Honeywell see potential to drive industrial energy savings of up to 256 trillion BTUs per year, while reducing environmental impacts and increasing yields. Target industries for the project include aluminum, chemicals, forest products, glass, metal casting, mining, petroleum and steel.
According to Sheflin, the DOE-sponsored project will include three major pieces. One part will build upon several years of work already done by Honeywell on a technique known as phased gas chromatography, he says. The technology relies in part upon a series of highly miniaturized devices that are used to elevate the concentration levels of gasses flowing past a sensor, enabling fast, highly accurate, and potentially low-cost, single chip-level analysis of the gas.
These single-chip devices, when placed within a process flow line and linked to factory control systems, could enable process monitoring and control in real time with much higher accuracy levels than is possible today, Sheflin says. “By being able to measure these gasses in real time, as the flow is going on, you’ll be able to very accurately control the mix of the gasses, so that you save energy and you don’t end up having to scrap material.” Honeywell is exploring use of the phased technology for liquid chromatography as well, Sheflin adds.
A second part of the project is linked to work being done by an ad hoc industry group known as the New Sampling/Sensor Initiative (NeSSI, www.cpac.washington.edu/NeSSI/NeSSI.htm), says Sheflin. The group—which is sponsored by the Center for Process Analytical Chemistry at the University of Washington in Seattle—includes more than 250 members from end user and vendor companies, including Honeywell. NeSSI goals including simplification and standardization of process analyzer sample system design.
Put ‘em anywhere
Under the DOE-sponsored project, Honeywell and its partners will work to develop and demonstrate standardized modules based on the NeSSI “Generation II” sampling system, according to Sheflin. Using a common board substrate and surface-mount technologies, the goal is to develop a standardized sampling platform that can accommodate multiple sensor types from multiple vendors, he explains. “Then you’ll have the capability to place these standardized modules anywhere around the plant for doing temperature, pressure or flow measurement, for example, or gas or liquid chromatography.”
The third piece of the DOE-sponsored project is the development and demonstration of an easy-to-use, open wireless network technology for tying it all together. “There are lots of standards out there. There’s Bluetooth, and people are working on ZigBee,” says Sheflin. “But the difference here is that we’re creating an industrial strength version of that.” As the primary network designer, Honeywell—along with its partners—may gain some first-mover advantage, Sheflin concedes. ...
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