Apparatus for liquid-gas contacting tray

Claim 1

A method for manufacturing an improved liquid gas contacting tray comprising the steps of: a. providing a sheet member no thicker than 0.125 inch having flat upper and lower surfaces; b. pinching a plurality of uniformly sized circular perforation openings of diameter of at least 0.015 inch through said flat surfaces with walls perpendicular to said flat surfaces, said perforation openings being uniformly distributed across said surfaces; c. deforming discrete rectangular portions of the perforated sheet member distributed across the entire flat surfaces thereof so as to shape a lesser number of sections than perforation openings raised from and surrounded by said flat upper surface; d. shearing a front edge of each raised section from the sheet member to form an elongated aperture plane of greater width than height containing the edges of the sheared material with all such apertures being oriented in the same direction across the sheet member flat surfaces and the total open area of said apertures comprising less than about 20 percent of the total open area of said tray; and e. said deforming and shearing being such as to form said raised sections each with a raised top surface, two obliquely inclined sidewalls joining said raised top surface and said flat upper surface, and a back edge integral with said flat upper surface.

Claim 2

A method for manufacturing an improved liquid gas contacting tray comprising the steps of: a. providing a sheet member no thicker than 0.125 inch having flat upper and lower surfaces; b. pinching a plurality of uniformly sized circular perforation openings of diameter of at least 0.015 inch through said flat surfaces with walls perpendicular to said flat surfaces, said perforation openings being uniformly distributed across said surfaces; c. deforming discrete rectangular portions of the perforated sheet member distributed across the entire flat surfaces thereof so as to shape a lesser number of sections than perforation openings raised from and surrounded by said flat upper surface; d. shearing a front edge of each raised section from the sheet member to form an elongated aperture plane of greater width than height containing the edges of the sheared material with all such apertures being oriented in the same direction across the sheet member flat surfaces and the total open area of said apertures comprising less than about 20 percent of the total open area of said tray; and e. said deforming and shearing being such as to form said raised sections each with a raised top surface, two obliquely inclined sidewalls joining said raised top surface and said flat upper surface, and a back edge integral with said flat upper surface.

Claim 3

A method for manufacturing an improved liquid gas contacting tray comprising the steps of: a. providing a sheet member no thicker than 0.125 inch having flat upper and lower surfaces; b. punching a plurality of uniformly sized circular perforation openings of diameter between about 0.015 and 0.125 inch through said flat surfaces with walls perpendicular to said flat surfaces, said perforation openings being uniformly distributed across said surfaces; c. deforming discrete rectangular portions of the perforated sheet member distributed across the entire flat surfaces thereof so as to shape a lesser number of sections than perforation openings raised from and surrounded by said flat upper surface; d. shearing a front edge of each raised section from the sheet member to form an elongated aperture plane of greater width than height containing the edges of the sheared material with all such apertures being oriented in the same direction across the sheet member flat surfaces and the total open area of said apertures comprising less than about 20 percent of the total open area of said tray; and e. said deforming and shearing being such as to form said raised sections each with a raised top surface, two obliquely inclined sidewalls joining said raised top surface and said flat upper surface, and a back edge integral with said flat upper surface.

Claim 4

A method for manufacturing an improved liquid gas contacting tray comprising the steps of: a. providing a sheet member no thicker than 0.125 inch having flat upper and lower surfaces; b. punching a plurality of uniformly sized circular perforation openings of diameter between about 0.015 and 0.125 inch through said flat surfaces with walls perpendicular to said flat surfaces, said perforation openings being uniformly distributed across said surfaces; c. deforming discrete rectangular portions of the perforated sheet member distributed across the entire flat surfaces thereof so as to shape a lesser number of sections than perforation openings raised from and surrounded by said flat upper surface; d. shearing a front edge of each raised section from the sheet member to form an elongated aperture plane of greater width than height containing the edges of the sheared material with all such apertures being oriented in the same direction across the sheet member flat surfaces and the total open area of said apertures comprising less than about 20 percent of the total open area of said tray; and e. said deforming and shearing being such as to form said raised sections each with a raised top surface, two obliquely inclined sidewalls joining said raised top surface and said flat upper surface, and a back edge integral with said flat upper surface.