Electrostatic technology

Whether electrostatic technology is superior to magnetic device technology is debatable. What is of interest is that, in a 1998 marketing and technical support documentation pack from a major electrostatic unit manufacturer, most of the information supplied related primarily to cooling water applications rather than boilers. The boiler data, such as there was, concerned only smaller, simple systems (e.g., HW boilers and steam ovens). 

Electrostatic Technologies, Inc. provide EluidTron electronic fluid treatment systems in various sizes. These items of equipment generate an electrostatic field of between 20,000 and 30,000 volts DC, at very low amperage. 

One novel method for scale control is magnetic and electrostatic technology suggested by US Department of Energy [22]. This nonchemical technology is recommended for scale and hardness control as a reliable energy saver in certain applications that can be used as a replacement for most water-softening equipment. 

Pherostatic, Electrostatic baffle coating. Electrostatic Technology, Inc. 

Chilworth reqitires yon to emoll to gain access to their library. Their library has a large mtmber of technical papers addressing electrostatic technology chemical process evaliration industrial explosion hazards (Dust) thermal instability hazards and other topics. See http //www.chilworth.com/about-us/ for details. 

Based on the present knowledge from the experimental results, an evaluation has been performed on the feasibility of an industrial application of the electrostatic technology for the removal of and SO2 from the flue gas of a large power station. The conditions at which the technology appears competitive with respect to the conventional technologies seem to be ... 

Control technology requirements vary according to the scale of operation and type of emission problem. For instance, electrostatic precipitator design requirements for fly-ash control from 1000-MW coal-fired power boilers differ from those for a chemical process operation. In the discussion that follows, priority is given to control technology for the CPI as opposed to the somewhat special needs of other industries. 

S. Oglesby, Jr., and G. B. Nichols, "A Manual of Electrostatic Precipitator Technology," NHS Report PB196380, Southern Research Institute, Birmingham, Ala., 1970. 

Electrophotography. The importance of electrophotography (qv) cannot be overstated. This weU-named, complex technology describes both the product, ie, an optical copy or photograph of an original, and the key to its process, ie, electrostatics. 

J. C. Colbert, ed.. Modem Coating Technology Rjadiation Curing Electrostatic, Plasma, andEaserMethods, Chemical Technology, Noyes Data Corp., Park... 

The use of nylon-11 for powder coatings or dry coatings (qv) has been developed in response to a growing concern for the environment (44) (see Coating PROCESSES, powder technology). Electrostatic deposition allows thin films to be appHed to metal substrates. Once the powder is appHed, it must be melted and coalesced into a continuous plastic film. Eorced draft or irradiant ovens are used for fusion, and because no polymerization or cross-linkage are required for curing, coated objects can be processed quickly and air-cooled (45). 

The most popiilar dry scrubbing systems for incinerators have involved the spray drying of hme slurries, followed by dry coUection in electrostatic precipitators or fabric filters. Moller and Christiansen [Air Poll. Cout. Assoc. 84-9.5 (1984)] published data on early European technology. Moller et al. [U.S. Patent no. 4,889,698 (1989)] describe the newer extension of that technology to include both spray-dryer absorption and dry scrubbing with powdered, activated carbon injection. They claim greatly improved removal of mercury, dioxins, and NOx. 

FIG. 17-68 Trends in resistivity of fly ash with variations in fliie-gas temperature and coal sulfur content. °C = (°F — 32) X %. (Ogleshij and Nichols, A Manual of Electrostatic Precipitator Technology, pait 11, Southein Research Institute, Binningham, Ala., Z.970.)... 

The principal technological changes in the engineering control of air pollution were the perfection of the motor-driven fan, which allowed large-scale gas-treating systems to be built the invention of the electrostatic precipitator, which made particulate control in many processes feasible and the development of a chemical engineering capability for the design of process equipment, which made the control of gas and vapor effluents feasible. 

Katz, J., "Electrostatic Precipitation." Precipitator Technology, Munhall, PA, 1979. 

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