Bobby L Simmons

US Patent:

42565111, Mar 17, 1981

Filed:

Sep 17, 1979

Appl. No.:

6/075914

Inventors:

Hugh C. Atchison - Tulsa OK
Bobby G. Simmons - Tulsa OK

Assignee:

The Dow Chemical Company - Midland MI

International Classification:

B08B 302
B08B 900

US Classification:

134 46

Abstract:

The apparatus disclosed herein is designed for removing solid deposits, which interfere with heat transfer, from the surface of the basket section in an air preheater. In one type of regenerative air preheater, the basket sections rotate around a hub inside a chamber. An I-beam and threaded rod are installed in the chamber parallel to the basket section, at a distance sufficient to allow clearance of the carriage assembly and jet nozzle, or nozzles. The carriage assembly is attached to the rod by a threaded drive block and the carriage straddles the I-beam. A motor drive, which is controlled by an electronic programmer, rotates the threaded rod, to drive the carriage incrementally along the rod and beam. The carriage also includs roller type bearings which aid movement of the carriage along the beam. As the basket section rotates parallel to the moving carriage, a high pressure water jet, or jets, is directed through the nozzle to wash the solid deposits off of the basket section.

US Patent:

48490270, Jul 18, 1989

Filed:

Apr 16, 1987

Appl. No.:

7/040544

Inventors:

Bobby G. Simmons - Tulsa OK

International Classification:

B08B 900

US Classification:

134 2218

Abstract:

A method for using a foamed liquid for cleaning and/or inerting a vessel is described which allows for continuous recycling of the foam and its breakout liquid and gas components into regenerated foam which is continously directed back into the vessel.

US Patent:

41337735, Jan 9, 1979

Filed:

Jul 28, 1977

Appl. No.:

5/819748

Inventors:

Bobby G. Simmons - Tulsa OK

Assignee:

The Dow Chemical Company - Midland MI

International Classification:

B08B 900
B01J 1300

US Classification:

252359E

Abstract:

The apparatus of this invention is designed for making foamed liquid solutions. In a specific application the foamed liquid is used for removing scale deposits from the interior surfaces of vessels, such as heat exchangers. The apparatus includes a foam chamber with a gas disperser section positioned inside the chamber. Ahead of the foam chamber is a final mixing section with a static mixer installed therein. A liquid concentrate, such as an acid solution, and a diluent liquid, such as water, are passed into the foam chamber. The liquids are mixed in the foam chamber and gas is bubbled into the liquid phase through the disperser section. The flow of gas and liquid into the foam chamber is controlled by flow regulators to achieve a continuous and uniform blending of the gas and liquid phases. From the foam chamber the foamed solution is carried into the final mixing section and passed through the static mixer to obtain a homogeneous cleaning solution, which is discharged into the vessel to be cleaned.