Ballast Tray Design Manual Bulletin No 4900 International

Calculated by this design manual, it should be understood that Glitsch Ballast trays are guaranteed to. Carbon steel Glitsch Ballast units are only occasionally used for reasons of economy. They are not normally recommended because the sharp edge on the lip will be lost due to rusting prior to the initial start-up. 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. Apr 28, 2009. Resetarits, M.R. And Pappademos, N., “Factors Influencing Vapor Crossflow Channeling”. AIChE Annual Meeting, Reno, NV, November 8, 2001. Glitsch, Inc., Ballast Tray Design Manual Bulletin No. 4900-Fourth edition, Dallas, TX. February 1984, pp 13 and 33. Flexitray Valve Tray Design Manual,.

FIELD OF THE INVENTION The invention relates to the design and construction of vapor-liquid contacting apparatus. The invention therefore relates to apparatus used within gas scrubbing columns or fractional distillation columns to, for example, perform separations of volatile chemical compounds.

The invention specifically relates to apparatus used as fractional distillation or contacting trays. PRIOR ART Vapor-liquid contacting trays are used in gas scrubbing or treating columns to remove a specific contaminant such as hydrogen sulfide. One specific type of vapor-liquid contacting tray is the fractional distillation tray. These trays are widely employed in the hydrocarbon processing, chemical, and petrochemical industries. Accordingly, a large amount of research, development, and creative thinking has been devoted to providing improved vapor-liquid contacting trays and especially fractionation trays.

Entire texts are devoted to the subject. Fractionation tray development has therefore provided many variations in contacting area structure, downcomer design, and overall tray structure.

3,410,540 issued to W. Bruckert is believed pertinent for its showing of the structure of a prior art 'multiple downcomer' tray employing the highly distinctive downcomer design similar to that employed in the subject tray. Magic Bullet Denoiser Ii Download Mac.

This reference illustrates alternative downcomer designs and possible variations for sealing the downcomer outlet. Free Download Aplikasi Kalkulator Untuk Komputer. 5 shows serpentine bracing means located within the downcomers (column 14, line 17).

The use of 'anti-jump' baffles located above the inlet to downcomer is known in the art as illustrated by FIG. 10 in the ballast tray design manual issued by Glitsch Incorporated (Bulletin No. 4900--fourth edition, copyright 1974). 4,028,191 issued to N. Cara Membuat Keygen Di Vb6 on this page. Scott is believed pertinent for its showing of a fractionation tray design in which vertical baffles descend from the lower surface of an upper fractionation tray. The baffles are employed on a cross-flow tray and oriented perpendicular to liquid flow across the tray.

The baffles do not extend downward to the upper surface of the next lower tray. Most trays have circular perforations evenly distributed across the contacting surface (decking) of the tray. These allow the rising vapor to flow straight upward from the tray's surface. A smaller subset of fractional distillation trays utilize mechanical means such as small 'slot' in the tray surface for directing the vapor in a specified direction as it passes upward through the contacting area of the tray. 3,282,576 to W. Bruckert et al. Is believed pertinent for its showing of a cross flow tray having a receiving pan and a bubble promoting device.

The reference also teaches that slots may be placed across the surface of a sieve-type liquid gas contacting tray to promote the flow of liquid across the tray without the aid of liquid gradients. 3,417,975 to B. Williams et al. Is believed pertinent for its teaching of other variations in fractionation tray design such as variations in the tray or deck active area surface material.