Prabhakar D Paranjpe

56057482, Feb 25, 1997

Jan 19, 1994

8/183673

Eugene D. Kennedy - Maryland Heights MO
John S. Merz - Florissant MO
Prabhakar D. Paranjpe - Chesterfield MO
Albert E. Tung - Chesterfield MO

Monsanto Enviro-Chem Systems, Inc. - St. Louis MO

D04H 1100

442 5

There is provided a fiber bed for removing liquid aerosols and soluble solids from a gas stream in a fiber bed mist eliminator. The fiber bed is in the form of a flexible mat having a void fraction of greater than about 0. 89 and greater than about 700 net collection targets. The mat includes a layer of collecting fibers having an average fiber diameter between about 1 and about 5. mu. m. The collecting fibers are stabilized by a plurality of stabilizing fibers which penetrate into and are disposed interstitially within the collecting fiber layer. The improved fiber bed of the present invention is field-replaceable and, by utilizing fibers having a small average diameter, the thickness of the fiber bed may be reduced.

58432108, Dec 1, 1998

Dec 19, 1996

8/772149

Prabhakar D. Paranjpe - Chesterfield MO
Michael L. Ketcham - Chesterfield MO
David A. Berkel - Wildwood MO

Monsanto Company - St. Louis MO

B03C 380

95 59

Electrostatic spray apparatus including an electrode for generating a high-voltage corona, one or more sprayers for generating a spray of liquid droplets and for directing the droplets into the high-voltage corona whereby an electrical charge is imparted to the droplets. The conduit which supplies the liquid to the sprayers is electrically grounded so that liquid supplied to the sprayer device is at ground potential. The electrode is continuously maintained substantially clean and dry as it generates the high-voltage corona. A process for removing particulates from a gas stream is also disclosed.

42643430, Apr 28, 1981

May 18, 1979

6/040257

Subbiah Natarajan - Fenton MO
Prabhakar D. Paranjpe - Creve Coeur MO

Monsanto Company - St. Louis MO

B03C 301

55126

Apparatus for charging and collecting submicron particles. The particles are charged by a needle-to-plate ionizer having offset rows of needles which are spaced from the plate such that voltage gradients of 6 KV/cm and higher are achieved. Needle-to-needle spacing and effective area of the plate are such that a corona current having a density of at least 4 ma/m. sup. 2 flows between the needles and the plate. Charged particles are collected in a collecting section having a deflector electrode and a pair of collecting plates. The deflector electrode includes a conductor embedded in a dielectric material having a dielectric constant greater than 1, which dielectric material suppresses arcs between the deflector electrode and the collecting plates. Baffles are provided to collect efficiently and with low pressure drop those charged submicron particles not collected on the collecting plates.