Column can be constructed either by using pipesections with support plates or using column sections with packing supports.

Column sections are provided with fused shelf wherepacking support can rest.

Above column sections can be provided with a thermometer branch below the packing shelf at 20° slope

Packing supports Type A are made of fused glass rods. Packing supports Type B (heavy duty) are made of glass plates vertically arranged and tied with PTFE tie rods

These are used as packing retainers to prevent the packing from lifting due to vapour velocity. These can be clamped between two components without using any gasket.

Support Plate Assembly can be coupled with apipe section (PS), so as to use the pipe section as a column section and to fill packings intoit. This system provides following advantages over the conventional system of using columnsection with a packing support.

• Higher cross section area
• More packing height.
• No separate inventory of column sections.
• Delivery period of pipe section are shorter.

This assembly consist of a glass support plate,a metal flange, a PTFE 'O' ring and nut-bolts.

Packings require for various pipe sections (Kgs.)

Notes of use of Column Packing

• Due to their low bulk densities, Glass Raschig rings are particularly suitable for packing glass columns
• Generally, the ratio of Column diameter to packing diameter should not be less than 8:1
• When using smaller packing size, a small layer of larger packing should be used on packing support, to prevent the smaller packing falling through.
• In vacuum application and applications involving high vapour velocities, packing may b e lifted and may damage to other parts. To prevent this, a packing retainer (PTFE p e rfo ra t e d plates) should be used above the packed section.

Raschig rings upto 25mm are also available in Neutral glass. 20mm, 30mm, 40mm and 50mm are available in Borosilicate glass 3.3.

Pall Rings are also available for column packing as per below specification

Feed pipe directs the process fluidto the centre of the column.

DN refers the nominal diameter of the column

In column feed spargers, holes are provided at three sides of pipe

DN refers the nominal diameter of the column.

Spray feed section are provided with circular tube having holes at the bottom.

For bigger columns, Spray feed pipe withUnequal Tee should be used.

Spray feed pipes are provided with oval tubehaving holes at the bottom. These should be usedwith unequal tees.

DN refers the nominal diameter of the column.

PTFE redistributors are used to prevent channeling incolumns. These can be clamped between twocomponents without using any gasket

Column adaptors with DN2 of different size(maximum equaling to DN1) can be manufactured with the same dimensions.

These are generally used as headersof shell and tube heat exchangersand columns.

Manually Operated

Reflux dividers are used to take off the distillatefrom the column. Usually a valve is to be fitted ondistillate outlet which controls the reflux coarsely.

DN2 is used for insertion of a thermometer pocket. A bellow is recommended on the distillate outlet DN1.

Magnetically Operated

These reflux dividers are to be used with a electro -magnet and a timer. These have a swinging funnel machanism which is operated magnetically from outside to remove the condensate or to return the reflux. Through this, correct control of reflux-ratio is possible. Funnel remains at 100% reflux position while magnet is inactive

DN2 is used for insertion of a Thermometer Pocket. A liquid seal is recommended on the distillate outlet ofthis reflux divider to prevent the vapour passing directly to the receiver.

These thermometer pockets are tobe used with reflux dividers orcolumn sections. DN refers to thenominal diameter of the Refluxdivider or Column.

Liquid seals are to be fitted onthe distillate outlet ofmagnetically operated reflux divider. This prevent the passing of vapourdirectly to the receiver

PACKING SUPPORT

Surya introduce single piece column section with inbuilt packing supportr

Advantages of this column against conventional column section:

• Ease in installation being a single piece instead of two pieces
• There is no need to maintain stock of CS and packing support

• Increases effective packed height which results in to increase in efficiency.
• Zero maintenance against column flooding.

These are generally used as headersof shell and tube heat exchangersand columns.

This instrument is mainly used to monitor the temperature of liquid in a glass vessel in a typical Glass Distillation Unit.

The instrument consists of a Temperature indicator and a Resistance Temperature Detectors (RTD). The instrument works on 230V, 50Hz power supply. This displays the temperature in degree Centigrades in three and half digits of 12.5mm character height.

Electro - magnets are used to operate Magnetically operated Reflux dividers. When 'On ' t h e magnet attracts the swinging funnel of the reflux divider so that distillate can be taken off.

Electro-magnets are to be mounted outside the glass column, just near to the reflux divider, with the help of adjustable fittings. These are designed to use with Timers to maintain correct ratio between 'Off' and 'On' timings of its activation

Electro-magnets work on 220V DC power supply, for which a output socket is provided in the Timers.

Timers are designed to use with Electro- magnets to provide a correct ratio of refluxand distillate when operating a Magnetically operated reflux divider.

Timers work on a power supply of 230V, 50Hz.