by U.S. Environmental Protection Agency, Industrial Environmental Research Laboratory, National Technical Information Service [distributor in Research Triangle Park, NC, Springfield, Va .
Written in English
|Statement||by L.E. Sparks, G.H. Ramsey, and B.E. Daniel ; prepared for U.S. Environmental Protection Agency, Office of Research and Development|
|Series||Interagency energy/environment R&D program report -- EPA-600/7-78-193, Research reporting series -- EPA-600/7-78-193|
|Contributions||Ramsey, G. H. 1944-, Daniel, B. E, Industrial Environmental Research Laboratory (Research Triangle Park, N.C.)|
|The Physical Object|
|Pagination||v, 29 p. :|
|Number of Pages||29|
The results of pilot plant experiments of particulate collection by a venturi scrubber downstream from an electrostatic precipitator (ESP) are present Author: L.E. Sparks, G.H. Ramsey, B.E. Daniel. An electrostatic precipitator (ESP) is a filtration device that removes fine particles, like dust and smoke, from a flowing gas using the force of an induced electrostatic charge minimally impeding the flow of gases through the unit.. In contrast to wet scrubbers, which apply energy directly to the flowing fluid medium, an ESP applies energy only to the particulate matter being collected and. Collection efficiencies for wet scrubbers vary with the particle size distribution of the waste gas stream. In general, collection efficiency decreases as the PM size decreases. Collection efficiencies also vary with scrubber type. Collection efficiencies range from greater than 99% for venturi scrubbers to % (or lower) for simple spray. Electrostatic precipitators and scrubbers 1. Electrostatic precipitator (ESP), or electrostatic air cleaner • It is a particulate collection device that removes particles from a flowing gas (such as air) using the force of an induced electrostatic charge.
veloped a handheld electrostatic precipitator (ESP) particle sam pler capable of collecting airborne particles including nanoscale materials, for subsequent EM analysis. The handheld ESP has been tested in the laboratory and is currently undergoing beta testing in the ﬁeld. Gross collection efﬁciencies were measured with a CPCCited by: L. E. Sparks has written: 'Particle collection by a venturi scrubber downstream from an electrostatic precipitator' -- subject(s): Electrostatic separators, Venturi scrubber 'Indoor air . The electrostatic precipitator remains one of the most cost-effective means of controlling the emission of particulates from most industrial processes, including pollution from power stations. The author reviews the basic theory and operation of precipitators, the characteristics of gas and particulates that impact on design and operation, and Cited by: An electrostatic precipitator (ESP) removes particles from a gas stream by using electrical energy to charge particles either positively or negatively. The charged particles are then attracted to collector plates carrying the opposite charge. The collected particles may be removed from the collector plates as dry material (dry ESPs), or they.
A venturi scrubber accelerates the waste gas stream to atomize the scrubbing liquid and to improve gas-liquid contact. In a venturi scrubber, a “throat” section is built into the duct that forces the gas stream to accelerate as the duct narrows and then expands. As the gas enters the venturi throat, both gas velocity and turbulence increase. The tested pilot units were two wet electrostatic precipitators (one WESP with collection electrodes of honey-comb design and one with a tubular design) and one special nozzle scrubber consisting of a fan with water atomised into the inlet and downstream a cyclone for removing the agglomerates produced in the fan. EPA/ PARTICIPATE COLLECTION EFFICIENCY MEASUREMENTS ON A WET ELECTROSTATIC PRECIPITATOR by John P. Gooch and Joseph D. McCain Southern Research Institute Ninth Avenue South Birmingham, Alabama for TheM. W. Kellogg Co. Three Greenway Plaza Houston, Texas Contract No. , Task 21 . 92 Ruttanachot et al., Aerosol and Air Quality Research, 90–98, where s is a half of the gap between collection electrodes (dc) and c is a half of the distance between wires electrodes (dw), and Ic is the average corona current and can be calculated from wc i V V V cs d r Z hL I 0 2 0 ln (8) Here ε0 is the free-space permittivity ( ×