Vessels

These vessels are used in Circulatory Boiler System and are to be supported on a vessel holder. More nozzles can be provided on the equator on request for special requirements.

Receivers are provided with builtin drip pipe. These are to be supported on a vessel holding ring.

These vessels are provided with a short bottom outlet. These should be supported on a vessel holder/ holding ring.

These vessels are generally used to fit immersion exchangers in the bottom. Special heating mantle or bath should be used if used with.

To fit a bottom outlet valve (BAL type) all spherical and cylindrical vessels can be supplied with valve seat in bottom outlet. For this, add a suffix "/B" to the catalogue reference of a vessel, for e.g. 'VSL50' should be mentioned as 'VSL50/B'.

Notes on use of Spherical vessels

Generally, the centre nozzle, referred as DN in all types of vessels, is used for either stirrer fixing or if stirrer is not fixed, for vapour outlet.

The bottom outlet, referred as DN1 in all types is used for drain. However, in type VSR & VSE, it is also used for fixing immersion heat exchanger.

The small side nozzles, referred as DN2 in all types, are used

• (a) to fix thermometer pocket or,
• (b) to fix dip pipe for liquid inlet or,
• (c) to fix sparger for gas purging or,
• (d) to fix vacuum control or vent valve or
• (e) for solid addition

The bigger side nozzle, referred as DN3, is used for vapour outlet where stirrer is fixed on centre neck. It can also be used for cleaning in case centre neck is used for vapour outlet.

Vessels having long bottom outlet, viz VSM, VSPL, VSL, VS etc, can be supported in a heating mantle or heating bath. However, vessels having short bottom outlet, viz VSD, VR, VA etc. are to be supported on a vessel holder only. In case of vessels upto 20L size, vessel holding rings can be used instead of vessel holder.

Cylindrical vessels of 50 Litres and above must be supported in a vessel holder.

Kettles are similar to cylindrical vessels but having a reduced top neck.

For special applications, cylindrical vessels can be supplied with a jacket for heating or cooling. Jacket is sealed to the vessel with Viton 'O' ring and other sealing compositions. The seal prevents high stresses between vessel and jacket by allowing the movement flexibility between two due to thermal expansion.

Glass Jackets

Glass Jacket can be used for a maximum operating pressure of 0.5 bar and a maximum operating temperature of 130 °C in jacket. The temperature difference between jacket & vessel should not exceed 120 °C.

Surya is presenting Flexi (Detachable) "Transparent Double Jacketed Vessel" to maintain the leading position in industry by way of developing indigenously newer products with higher value towards their Mission and to cater the customer via innovation.

Salient Features

• Made from SCHOTT DURAN
• Vacuum Jacket ensures
  • Transparent insulation.
  • Minimum heat loss
  • Process visibility.
  • Minimize frost formation for cryogenics operation
• Vacuum Jacket & main vessels are detachable ensures
  • Ease of cleaning
  • No breakages due to thermal expansion.
  • Partial Replacement of any part can be possible reduce the maintenance cost.

Dip pipes are used as liquid inlet for spherical vessels.

Short dip pipes are used as re-entry tubes for vessels, heat exchangers etc.

Gas spargers are used for gas feed/sparging in the vessels.

Heating Mantle is used for electrical heating of cylindrical as well as spherical vessels. Also available in flameproof & non-flameproof models.

The flameproof heating mantle is similar to normal mantle but the main difference is in the construction of the heating element. The heating element is made flameproof by covering it in magnesium oxide powder and SS metal tube. Heater terminals terminate in a flameproof cold junction terminal enclosure. All electrical controls like regulator, switch, indicating lamp, relay etc. are fitted in a flameproof switch enclosure.

We can also provide flameproof digital temperature indicator-cum-controller with sensor.

Heating baths are used for electrical or steam heating of glass vessels. Depending upon the temperature requirements, different types of thermic fluids or water can be used as heating media. Heating baths are provided with a pair of encased heaters with controller box, a coil for passing the steam or cooling water, a cushioned vessel holding ring, a bottom outlet sealing arrangement, a lid and threaded socket type intlets and outlets.

Cooling baths are used for cooling the glass vessel with ice crystals. Cooling Baths are provided with a vessel holding ring, bottom outlet sealing arrangement and a lid

Vessel holders are made of cast aluminum with a plaster lining shaped to fit the vessel. These are to be supported on 3 jacking bolts.

These metal rings are wrapped with asbestos rope and are to be supported on two jacking bolts.

Decantation is a process of separation of two immiscible liquids having different densities. When these liquids are allowed to settle, they form two distinct layers, heavier at the bottom and lighter at the top. Surya has developed a Decantor which is suitable for continuous decantation.

The mixture of liquids is continuously fed in the Decantor at low velocity. This allows sufficient residence time for the formation of separate layers. The light phase liquid is continuously removed from the light phase outlet at the top. The heavy phase liquid enters the dip pipe at the lower end and overflows in the discharge pipe and is removed from the bottom.

Surya's Decantor provides continuous separation, visual monitoring, and ensures separation even after feed is stopped.

Decantors can be provided with Adjustable overflow valve (Type B) to adjust the position of interface for different operating situations.