Abstract

The invention discloses an improved diffuser wherein the problems associated with diffusers with vertically disposed annular extraction stages when scaled to industrial level have been overcome by providing a simple but novel, economical and efficient solution. The improved diffuser has a smooth and continuous operation without requiring any additional or complex arrangements, controls or maintenance, as were required in the prior art.

IPC Classes  ?

• C13B 10/12 - Details of extraction apparatus, e.g. arrangements of pipes or valves
• B01D 11/00 - Solvent extraction

Abstract

The invention discloses an improved vertical tube falling film heat exchanger wherein the improvement comprises of a simple but novel tube extension (3) of a substantially inverted funnel shaped configuration at the upper ends of the vertical tubes (2), whereby the said extension (3) permits the use of honeycomb calandria in the vertical tube falling film heat exchangers by ensuring uniform liquid distribution in the vertical tubes (2) and completely eliminates the need of a separate distribution means interposed between superimposed banks of vertical tubes.

IPC Classes  ?

• F28D 5/02 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation in which the evaporating medium flows in a continuous film or trickles freely over the conduits

Abstract

A heat exchanger assembly (101) is disclosed. The heat exchanger assembly (101) includes a heat exchanger (105) comprising of a bank of vertical parallel heat exchange tubes (106) of short height open at both ends. The tubes (106) are enclosed in a casing which has inlets for steam or other condensing medium. The heat exchanger (105) is arranged around the periphery of a chimney (103) of a natural draft tower (102) in a substantially circular plan. Means (110-112) are provided to spray the evaporative liquid from a particular height over the heat exchanger (105) co-current to the natural air draft. The heat exchanger assembly (101) operates as an improved evaporative condenser.

IPC Classes  ?

• F28D 5/02 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation in which the evaporating medium flows in a continuous film or trickles freely over the conduits

Abstract

A distributor for falling film evaporator comprising of; a cylindrical body, upper inlet chamber, means to allow tangential entry into said upper inlet chamber, means for imparting swirl to the feed material, an outlet chamber and a single axial outlet wherein, the said distributor imparts swirl to the feed material with minimal energy loss by utilizing natural fluid flow tendencies.

IPC Classes  ?

• B01D 1/06 - Evaporators with vertical tubes
• B01D 1/22 - Evaporating by bringing a thin layer of the liquid into contact with a heated surface
• B01D 1/30 - Accessories for evaporators
• C13B 25/02 - Details, e.g. for preventing foaming or for catching juice
• F28D 3/04 - Distributing arrangements
• F28D 5/02 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation in which the evaporating medium flows in a continuous film or trickles freely over the conduits

Abstract

The present application describes a novel jet nozzle, which performs the dual function of ejection and condensation, resulting in overall efficiency. This has been achieved by two unique factors. Firstly, positioning of the guide vanes at the entry point of the nozzle, instead of the high velocity zones inside the nozzle e.g. mouth region. Secondly, by imparting of a slight angle of 3-4 degree to the guide vanes, which results in imparting of a whirl to the water column, thus giving it the dual advantage of spray effect without loss of impact.

IPC Classes  ?

• F28B 3/04 - Condensers in which the steam or vapour comes into direct contact with the cooling medium by injecting cooling liquid into the steam or vapour

Abstract

The present invention consists of an improved vertical continuous vacuum pan apparatus consisting of eight chambers (2) (instead of four or five) and a storage or buffer tank (27) at the top, within the existing conventional height, characterized in that each chamber has a bottom mounted mechanical circulator housed in an insulated pocket (28) in the vapour space segment (29) of each chamber and not in additional space above the chamber.

IPC Classes  ?

• C13B 30/02 - CrystallisationCrystallising apparatus
• C13B 25/00 - Evaporators or boiling pans specially adapted for sugar juices Evaporating or boiling sugar juices
• C13B 25/02 - Details, e.g. for preventing foaming or for catching juice
• C13B 25/06 - Evaporators or boiling pans specially adapted for sugar juices Evaporating or boiling sugar juices combined with measuring instruments for effecting control of the process

Abstract

The present invention describes a novel mechanical circulator assembly (2) which is of compact construction and energy efficient. In the present invention, the circulator shaft (13) length has been reduced considerably to only 0.50 - 0.56m as compared to conventional shaft length of 5.0 - 8.0m (in case of top-mounted mechanical circulators) and 1.7 - 2.5 m (in case of bottom-mounted mechanical circulators). This has been achieved by two factors - positioning of the sealing means & bearing assembly in a special sealing and bearing housing (4) disposed entirely within the vacuum pan; and use of compact & light weight gearbox (15) of inline planetary type having a hollow spline output and hollow input with key arrangement for direct inline flange mounting of the drive (16).

IPC Classes  ?

• C13B 25/02 - Details, e.g. for preventing foaming or for catching juice
• B01D 1/06 - Evaporators with vertical tubes
• C13B 25/00 - Evaporators or boiling pans specially adapted for sugar juices Evaporating or boiling sugar juices
• C13B 25/04 - Heating equipment