Apparatus for catalytic distillation
First Claim
1. A gas liquid catalytic distillation apparatus comprising a housing defining a contact chamber having a substantially vertical longitudinal axis and a liquid inlet and gas outlet adjacent to its upper end and a gas inlet and liquid outlet adjacent to its lower end, at least one gas liquid contacting tray traversing said chamber, each of said tray having a plurality of collector means for gas liquid contact, each said collector means having a sump means forming the lowermost portion of each collector means and gas pervious wall means diverging from said sump means to form gas liquid contact zones upstream of said sump means in the direction of liquid flow to said sump means, said sump means defining a liquid condensing and retaining chamber having a width so that sufficient open area is provided at its upstream end to permit gas to separate from foam generated by said gas liquid contact, said sump means having a bottom end at its downstream side in the direction of liquid flow and liquid outlet means at said bottom end, and said gas pervious wall means having a plurality of discrete passages for gas flow through said gas pervious wall means to direct gas passing therethrough into contact with said liquid flowing in over said gas pervious wall means to said sump means, said wall means and said sump means of said collector means being positioned in said contacting tray to distribute and direct said liquid to flow along said tray and into said sump means, a plurality of troughs mounted between and in spaced relationship with a pair of adjacent contacting trays, each of said troughs being positioned directly below one of said sump means in said contacting tray immediately thereabove, said troughs being laterally spaced apart to define gas flow passages therebetween, each of said troughs defining a confined passage for liquid flow having a liquid inlet at its upper end and a liquid outlet at its other end, means for directing liquid from said outlet of one of said sump means immediately thereabove directly into said liquid inlet of said confined passage in said trough immediately therebelow, a catalyst charge in said confined passage, said confined passages in said plurality of troughs between a pair of adjacent contacting trays forming substantially the sole path for liquid movement between said pair of adjacent contacting trays so that substantially all of said liquid from said contacting tray immediately above flows from said liquid outlets in said sump means into said inlets of said plurality of troughs immediately therebelow, through said passages for liquid and said catalyst out and toward said contacting tray immediately therebelow.
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Accused Products
Abstract
An apparatus for catalytic distillation consists of alternatively a catalyst unit and an active liquid distributor tray. The catalyst unit is formed by series of troughs containing catalysts with spaces between adjacent troughs for vapor flow. The active liquid distributor tray is preferably a V-shaped tray formed with collectors that function as both a liquid distributor to deliver liquid at the appropriate locations to the underneath catalyst unit and a mass transfer device. Liquid flows down to the catalyst toughs from bottom of the sump of each collector and vapor flows up through the upper diverging walls of the collector. Packing materials may be placed on the tray or in the spaces between the troughs or both to enhance mass transfer. The catalyst troughs preferably are partitioned to cause the liquid to flow through the catalyst and to overflow the upper rim of the troughs to escape therefrom whereby the catalyst is maintained submerged.
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Citations
17 Claims
- 1. A gas liquid catalytic distillation apparatus comprising a housing defining a contact chamber having a substantially vertical longitudinal axis and a liquid inlet and gas outlet adjacent to its upper end and a gas inlet and liquid outlet adjacent to its lower end, at least one gas liquid contacting tray traversing said chamber, each of said tray having a plurality of collector means for gas liquid contact, each said collector means having a sump means forming the lowermost portion of each collector means and gas pervious wall means diverging from said sump means to form gas liquid contact zones upstream of said sump means in the direction of liquid flow to said sump means, said sump means defining a liquid condensing and retaining chamber having a width so that sufficient open area is provided at its upstream end to permit gas to separate from foam generated by said gas liquid contact, said sump means having a bottom end at its downstream side in the direction of liquid flow and liquid outlet means at said bottom end, and said gas pervious wall means having a plurality of discrete passages for gas flow through said gas pervious wall means to direct gas passing therethrough into contact with said liquid flowing in over said gas pervious wall means to said sump means, said wall means and said sump means of said collector means being positioned in said contacting tray to distribute and direct said liquid to flow along said tray and into said sump means, a plurality of troughs mounted between and in spaced relationship with a pair of adjacent contacting trays, each of said troughs being positioned directly below one of said sump means in said contacting tray immediately thereabove, said troughs being laterally spaced apart to define gas flow passages therebetween, each of said troughs defining a confined passage for liquid flow having a liquid inlet at its upper end and a liquid outlet at its other end, means for directing liquid from said outlet of one of said sump means immediately thereabove directly into said liquid inlet of said confined passage in said trough immediately therebelow, a catalyst charge in said confined passage, said confined passages in said plurality of troughs between a pair of adjacent contacting trays forming substantially the sole path for liquid movement between said pair of adjacent contacting trays so that substantially all of said liquid from said contacting tray immediately above flows from said liquid outlets in said sump means into said inlets of said plurality of troughs immediately therebelow, through said passages for liquid and said catalyst out and toward said contacting tray immediately therebelow.
Specification