Vapor-liquid contacting tray with vapor thrust means
AssigneeUnion Carbide Corporation
InventorWalter Bruckert
Life of this patent
Estimating the term…
Abstract
A vapor-liquid contacting tray is disclosed having an enclosure member overlying and extending transversely across the tray deck top surface from a portion above a tray support ring to an adjacent perforated portion of the tray deck wherein the perforation openings are unobstructed by the support ring. A vapor flow opening is located in the enclosure member over the portion of the tray deck above the support ring. Vapor flowing into the enclosure member from the overlaid tray deck perforation openings is directed through the vapor flow opening into the liquid on the tray deck surface portion overlying the support ring, to effect vapor-liquid contacting and prevent liquid flow stagnation thereon.
Claims10
In a vapor-liquid contacting column including a casing in which a plurality of generally horizontally aligned vapor-liquid contacting trays are disposed, vertically spaced apart from one another and mounted in said casing on substantially imperforate support rings such that the support rings underlie portions of said contacting trays for support thereof, with clamp means for rigidly securing said contacting trays to said support rings, said contacting trays each including a horizontally aligned deck having main flat top and bottom surfaces, with vapor flow perforation openings extending through said deck, and liquid transfer means associated with the tray for transferring liquid previously contacted on said tray deck to a next underlying tray in said contacting column, the improvement comprising:
- an enclosure member overlying and extending transversely across said deck main flat top surface from a portion thereof above said support ring to an adjacent perforated portion of said tray deck wherein the vapor flow perforation openings are unobstructed by said support ring such that said enclosure member forms an enclosed spatial volume with respect to and above the overlaid tray deck portion, with a vapor flow opening in said enclosure member located over the portion of said tray deck above said support ring, such that closed gas flow communication is provided from the vapor flow perforation openings in said adjacent perforated portion of said tray deck overlaid by said enclosure member to said vapor flow opening in said enclosure member, whereby vapor flowing through said perforation openings and entering said enclosed spatial volume of said enclosure member is directed through said vapor flow opening into the liquid on the tray deck main flat top surface portion overlying said support ring, to effect vapor-liquid contact and prevent liquid flow stagnation thereon.
In a vapor-liquid contacting column including a casing in which a plurality of generally horizontally aligned vapor-liquid contacting trays are disposed, vertically spaced apart from one another and mounted in said casing on imperforate support rings joined to an inner surface of said casing and extending horizontally inwardly therefrom such that the support rings underlie the peripheral portions of said contacting trays for support thereof, with clamp means for rigidly securing said contacting trays to said support rings, said contacting trays each including a horizontally aligned deck having main flat top and bottom surfaces, with vapor flow perforation openings extending through said deck, and liquid inlet means at one edge of said tray deck and liquid discharge means at an opposite edge thereof whereby a liquid flow path is formed extending across said tray deck main flat top surface from said liquid inlet to said liquid discharge including peripheral flow path portions adjacent said inner surface of said casing, the improvement comprising:
- an enclosure member overlying and extending transversely across said deck main flat top surface from a peripheral portion thereof above said support ring to an adjacent perforated portion of said tray deck wherein the vapor flow perforation openings are unobstructed by said support ring such that said enclosure member forms an enclosed spatial volume with respect to and above the overlaid tray deck portion, with a vapor flow opening in a downstream portion of said enclosure member located over the peripheral portion of said tray deck above said support ring and bounded at its lower edge by the main flat top surface of said tray deck, such that closed gas flow communication is provided from the vapor flow perforation openings in said adjacent perforated portion of said tray deck overlaid by said enclosure member to said vapor flow opening in said enclosure member, whereby vapor flowing through said perforation openings and entering said enclosed spatial volume of said enclosure member is directed through said vapor flow opening into the liquid on the tray deck main flat top surface peripheral portion overlying said support ring, to effect vapor-liquid contact and prevent liquid flow stagnation in the region of said inner surface of said casing.
Dependencies are inferred from the claim text.