Valve for a contact tray

A technology of contacting disc and valve body, applied in the field of valve contacting disc, can solve the problems of non-existence, wide working range, etc., and achieve the effect of fast installation speed
CN101138685AInactive Publication Date: 2008-03-12SULZER CHEMTECH AG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SULZER CHEMTECH AG
Publication Date
2008-03-12
Estimated Expiration
Not applicable · inactive patent

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Abstract

The valve for a contract tray employs an aperture in a deck that is of rectangular or trapezoidal shape with upstanding walls at the sides of the aperture. The valve body is disposed in the aperture with a cover above the aperture and legs that extend downwardly to interfit with at least the upstream end of the walls to block the liquid flow. The valve body may be fixed or movable. In the movableembodiment, the valve body is seated on the walls about the aperture to close the aperture. The ascending vapor lifts the valve to allow bubbling of the vapor in the liquid on the deck.
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Description

technical field

[0001] The present invention relates to valves for contact discs. More specifically, the present invention relates to valves for gas-liquid contact trays suitable for use in distillation columns. Background technique

[0002] As is known, distillation columns are provided with various types of contact trays for gas-liquid contacting purposes. Examples of such columns are described in US Patent Nos. 4,750,975; 5,120,474 and 5,453,222.

[0003] Typically, contact trays in distillation columns and the like have decks over which liquid flows. In some cases, the deck is provided with valves through which ascending vapor can flow and over which liquid can flow in order to bubble the vapor through the liquid. In other cases, sieve trays are used which have only holes in the deck without any valves. Sieve discs are common because they are simple and cheap, but they do not have as wide a working range as valve discs.

[0004] The valves used are of various config...

Claims

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