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Trickle-bed reactors
Trickle-bed reactors are a class of multiphase reactors used
extensively in petroleum refining industries, waste water treatment
and bioprocesses.
There is a major contribution of our group in scale-up and design of
trickle bed reactors (TBR) towards attaining the environment friendly economic growth of our society. We have focused four major
areas-Hydrodynamics, Liquid Maldistribution and Partial Wetting, Mixing Characteristics and Modeling. The hydrodynamics and
residence time distribution studies were carried out in a pilot plant of
2.5 cm, 5 cm, 15 cm and 30 cm diameter reactor which can be
operated upto pressure of 25 bar and temperature of 1000C.
A theoretical model based on first principle has been developed to
predict design parameters such as pressure drop, liquid holdup and
wetting efficiency for industrial Trickle-Bed Reactor
Goneometer
Unique Features
- Measures pellet-scale external wetting efficiency in trickle bed
reactors
- Can be operated for a wide range of pressure and temperature
(Temperature: 28 0C to 250 0C and Pressure; 0 – 40 bar g)
- Contains a CCD video Camera with video adaptor
- Falcon software for saving images in BMP format with full color
video resolution in high quality
Applications
- Studies of spreading, surface treatments, spreading rates
- Adhesion, wetting of fibers and flats, optimization of resins
- Control droplet surface area to increase or decrease evaporation,
optimal wetting of heat exchanger surfaces
Innovative Heat Exchanger
- It is usually desired to achieve uniform reaction conditions or
lower temperature gradients to improve the performance of flow
reactors and heat exchangers.
- Narrower residence time and thermal time distributions can be
obtained by increasing the mixing between the fluid elements of different age groups and temperatures.
- Commercial motionless mixers and flow inverters are employed
in industrial practice to enhance heat transfer coefficient and to
provide more uniform thermal and compositional environments.
- Helical coils also find extensive use owing to the
cross-sectional mixing induced by centrifugal force.
- A Very simple and extemely effective technique, has been
developed to cause multiple flow inversions at low flow rates just
sufficient for secondary flow to fully develop.
CFC Pilot Plant
- Caustic extraction of H2S Carbonyl sulfide, CO2 and
mercaptans from gases, LPG and naphtha
- Caustic extraction of naphthenic acids from jet fuel,
kerosene and middle distillate
- Caustic extraction of aromatic mercaptans and organic
acids from cracked naphtha and cycle oil
- Caustic extraction of hydrogen chloride from reformer gas
and liquid product streams
- Sweetening of FCC gasoline by mercaptan sulfur catalytic oxidation
Static Mixer Unit
- No moving parts – Low maintenance costs
- Low shear forces
- 10 to 100 times less energy compared with
agitated vessels/extruders
- Controlled mixing quality
- Plug flow behavior
- Needs small space
- Low investment and operating costs
- No mechanical seals
Bubble Column Reactor
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