Proven know-how in design and construction of furnaces. RFCC Process Technology Manual. Ballast Tray - Bullettin 4900. Ballast Tray Manual. 4900 (revised). Bubble Tray Design Manual. References Raphson Method. Ballast tray design manual. 'Ballast Tray Desn Manual' Bulletin 4900 1961. Part 3 Mechanical desns for tray performance. [Glitsch] - Ballast Tray - Bullettin 4900. Calculated by this design manual. The results of these tests are described fully in Glitsch Bulletin No.

Valve-tray assembly Abstract A valve-tray assembly for vapor liquid contact towers. The active area of the tray beneath an upper downcomer is constructed with directional thrust valves facilitating oriented vapor flow therethrough and improving mass transfer efficiency. The valves include first and second support legs oriented into the liquid flow with the first leg having a wider surface area presented to the flow for diverting the flow therearound. The width of the first leg is less than the diameter of the valve aperture, about which the liquid is induced to flow into engagement with the vapor passing therethrough.

The valve assembly is used in conjunction with, and outwardly of, a raised active inlet area to further control initially directed liquid flow from the perforated inlet area beneath the downcomer. Inventors: Binkley; Michael J. (Glenn Heights, TX), Thorngren; John T.

(Dallas, TX), Lewis; Richard P. (Farmers Branch, TX), Grigson; Walter W. (Baton Rouge, LA) Assignee: Glitsch, Inc. (Dallas, TX) Appl.

No.: 07/577,360 Filed: September 4, 1990. Patent Documents Application Number Filing Date Patent Number Issue Date 320420 Mar., 19 Sep., 1990 Current U.S. Class: 261/114.4 Current International Class: B01D 3/14 (20060101); B01D 3/22 (20060101); B01D 3/20 (20060101); B01F 003/04 () Field of Search: 261/114.4 References Cited U.S. Patent Documents January 1952 Glitsch September 1952 Glitsch September 1960 Nutter November 1960 Eld et al. November 1961 Glitsch et al.

December 1961 Glitsch January 1962 Glitsch June 1962 Glitsch February 1963 Winn March 1963 Glitsch et al. April 1963 Glitsch August 1964 Forgrieve November 1965 Van't Sant February 1966 Glitsch et al.

April 1966 Huggins et al. November 1966 Nutter September 1967 Winn et al. November 1968 Bruckert November 1973 Nutter June 1974 Price January 1975 Uchiyama May 1976 Kitterman July 1976 Glitsch et al. October 1978 Burin et al. October 1978 McClain April 1980 McClain August 1982 Sonnedecker et al. February 1985 Kirkpatrick et al.

March 1985 Chuang et al. September 1985 Yamato et al. October 1985 Bentham July 1986 Chen July 1986 Yoneda et al. August 1986 Chen et al. March 1988 Lee et al.

June 1989 Chen et al. March 1990 Binkley et al. August 1990 Chen et al. Ipsw Patch Tool 2 4 Windows Remodel.

September 1990 Binkley et al. Foreign Patent Documents 424574 Apr., 1974 SU 980743 Dec., 1982 SU Other References Glitsch, Inc., 'Ballast Tray Design Manual,' Bulletin No. 4900-Fifth Edition, Apr.

Gilbert Chen, 'Packed column internals,' Chemical Engineering, Mar. 5, 1984 (reprint). Primary Examiner: Miles; Tim Attorney, Agent or Firm: Johnson & Gibbs Parent Case Text This is a Continuation-in-Part of U.S.

Patent application Ser. Macklemore Thrift Shop more. 07/320,420 filed Mar. 8, 1989 now U.S. 4,956,127 issued Sept.

The Hunter Crack Offline Browser. Claims We claim: 1.

A chemical process tower tray construction incorporating a tapered semi-conical downcomer adaptive for discharging liquid along an arcuate edge portion of an underlying tray. The underlying tray is of the type supported within the chemical process tower by a support ring which is positioned beneath the edge of the tray for the support thereof. The solid support ring typically forms a nonactive area beneath this region of the tray and the tapered downcomer discharges liquid directly onto the inactive region wherein the remaining portion of the tray can be utilized for mass transfer. BACKGROUND 1. Field of the Invention The present invention relates to chemical process towers and, more particularly, but not by way of limitation, to a tapered downcomer assembly for maximizing mass transfer performance across an adjacent tray. History of Related Art Distillation columns are utilized to separate selected components from a multi component stream. Successful fractionation in the column is dependent upon intimate contact between liquid and vapor phases.