mixing

Static Mixer

Static mixers are well known in the process industry for mixing, blending and related tasks. It is a device which has a series of fixed, geometric elements enclosed within a tubular cylindrical or square housing. The fluids to be mixed are fed at one end of the housing. The internal elements impart flow division and the fluids are directed both outward and inward due to the geometry of the elements. Thus radial mixing of the fluids occur while flowing forward to the other end to produce uniformly mixed desired product. Simultaneous heating or cooling can be done by imparting a jacket outside.

Both elements consisting of a series of baffles and housing are made from metal or a polymer. Stainless steel and other exotic metals, polypropylene, PTFE (Teflon), polyvinylidene fluoride (Kynar), polyacetal (Delrin), FRP etc. are used.

In static mixer, materials flowing are mixed solely by redirecting fluid flow to follow the geometry. The only power required for static mixers is the external pumping power that propels the material through the mixer. Static mixers employ the principle of dividing the flow and recombining it in a geometric sequence. It is also called a ‘Motionless Mixer’. The overall system design is dependent on many variables including the physical properties of fluids, mixer length, tube inner diameter, the number of elements and their geometrical design.

   

Shear Mixer

Fenix FXShearMix range of mixers are based on the concept of mixing head for intense shear of ingredients. This mixer has a separate chamber at the bottom through which the mixing ingredients are drawn in. The high speed rotating head pushes the ingredients through specially designed perforated head at a very high velocity. This helps the fluid to break into small particles which flows through the peripheral cavity to the top. The fluid is kept in suspension in the chamber by rotating blades and flows out through the top nozzles.

The entire liquid contact parts of the mixer are constructed in stainless steel 316. The mixer is provided with a mechanical seal for shaft sealing and a drive motor. The speed of the motor can be varied by a variable frequency drive.

Pusher Sentrifuge

Pusher centrifuge is a continuous filtering device used for solid-liquid separation which finds extensive use in chemical, pharmaceutical, food (common salt) and mineral industries. Pushers have been in use for more than half a century for dewatering relatively large, free-draining crystals and other solids.

Various types of centrifuges are available in the market, and each type has certain advantages over a specific range of process variables. Pusher centrifuge is known to be highly effective for feeds of wide ranging solid-content and particle size from about 80 microns to a few millimeters.

It has an axially mounted filtering screen made of trapezoidal bars. The slurry is fed into the narrower end of the screen. Due to centrifugal action the solid forms a cake on the screen and the liquid separates out as filtrate. A reciprocating piston pushes forward the cake. The stroke of the piston stops just short of the wider end of the screen. This enables a thick layer of cake to remain at the discharge end which serves as a rim, preventing short-circuiting of the slurry.

The mechanism is such that when the pusher is in back position, a wedge slot opens allowing the slurry to enter the screen chamber and when the pusher moves forward, the feed is stopped. The deposited wet cake becomes progressively drier under the centrifugal force as it moves towards the discharge end.

Autoclaves and Reactors

Salient Features

  • Stirred & non-stirred reactors/pressure vessels.
  • Sizes from 25ml to 1000ltrs capacity.
  • M.O.C SS-316/316L, Hastelloy B/C, Monel, Inconel, Nickel, Titanium, Tantalum, Zirconium etc.
  • Max. design pressures upto 5000psig ( 350 bar) & temperatures upto 500°C.
  • All designs as per ASME codes & CE certified autoclaves on request.
  • High torque zero leakage magnetic drive coupling.
  • Complete pilot plant with automatic temperature, pressure RPM, motor torque/ current, liquid & gas flow controlling, autocooling system, chiller, condensor for distillation or reflux, thermic fluid heating/cooling system etc.
  • PC controlled autoclave system to continuously monitor control and record various parameters.
  • Multiple parallel 4 or 6 reactors for high throughput testing.
  • Complete FLP certified / Explosion proof systems suitable for group IIC gases like H2.
  • Bottom stirred autoclaves. Glass body autoclaves. Interchangeable metal autoclaves.
  • Interchangeable metal & glass autoclaves.
  • Rocker/ Shaker Hydrogenator.
  • Continuous flow stirred tank reactor.
  • Fixed bed catalyst tubular reactor Acid digestion vessel.

Application

It is used for reactions like Alkylation, Amination, Bromination, Carboxylation, Catalytic reduction, Chlorination, Dehydrogenation, Esterification, Ethoxylatlon, Halogenation, Hydrogenation, Methylation, Nitration, Oxidation, Ozonization, Polymerization, Sulphonation etc, at high pressure, vacuum and temperature.

  • To invent new chemicals.
  • To produce chemicals in small quantity in batch or continuous mode.
  • For pilot plant purpose.
  • For quality control and process improvements To study reaction parameters.
  • For heterogeneous mixing.
  • To carry outcatalytic reactions.
  • To carry out exothermic or endothermic reactions.
  • For corrosion studies.
  • For reaction calorimetry.
  • For Supercritical CO2, solvent extraction system For Hydrogen disbonding test etc.

In R&D centers, pilot plants & manufacturing facilities of fine and speciality chemicals, bulk drug (API) pharmaceuticals, dyes, intermediates, paints, oils, agrochemical, petrochemicals, petroleum etc. Industries & also in chemical engineering colleges / research institutes / defence organisations where high pressure reactions are carried cut.

 

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Steam Trap from Delta Steam Systems

The DELTA Trap works by combining venturi technology with the orifice, so:

part of the capacity of the DELTA Trap is related to the size of the orifice
part is also related to the back pressure that is generated inside the venturi

It is a combination of the pressure drop across the orifice and the back pressure generated in the venturi that gives the DELTA Trap its overall capacity.

As the condensate passes through the orifice of the DELTA Trap there is a pressure drop. On the upstream side of the orifice the condensate is at the same pressure as the steam and it has a high energy content. As the pressure drops across the orifice, the temperature and pressure of the condensate reduces, so it contains less energy.

However, energy cannot be destroyed, so the transfer of energy between the HP upstream side and the LP downstream side causes some of the condensate to be converted into 'flash' steam. The higher the pressure difference across a trap, the more condensate has to be converted into 'flash' steam.

Advantages

  • 10 year Performance Guarantee
  • All Delta Venturi Orifice Steam Traps come standard with our 10 year performance guarantee against orifice erosion and steam wastage.

  • Minimal Maintenance
    • No moving parts
    • No spare parts required
    • Permanently eliminate the need for steam trap surveys
    • Savings on labour for repairing steam traps
    • Unaffected by thermal shock or water hammer
  • Improved efficiencies
    • Due to the traps unique DSV™ venturi orifice design there is TRUE continuous condensate discharge without any open/close cycles rather than intermittent discharge like traditional mechanical type steam traps such as ball float or inverted bucket traps.
    • Upstream control valves have a more linear steam supply to the process equipment rather than the traditional continuous peak and trough supply.
    • A thinner film of condensate is accumulated on the heating surface of the process equipment allowing improved heat transfer.
    • Through permanently eliminating failed steam traps passing live steam into the condensate return system and pressurising this system, a more balanced downstream pressure is achieved allowing faster condensate discharge and improved heat transfer.
    • Minimal thermal energy loss due to the Delta DSV™ Steam Traps compact design (in some cases up to 20 times smaller than mechanical steam traps)
  • Environmentally Friendly
    • CO2 emissions are reduced through reducing steam wastage through failed traps
    • Save Water
    • Save water treatment chemicals
    • Save boiler fuel (gas, oil, coal, electricity) by up to 30%

Conventional Traps vs DELTA Steam Traps

Conventional Traps Delta Steam Traps
  • Fail open and waste steam
  • Mechanical parts requiring maintenance
  • Oversized orifice
  • Spare parts required
  • Large heat loss off big body of trap
  • Backs up condensate between cycles
  • Fair to medium resistance to wear
  • Fair to medium resistance to water hammer
  • Ongoing specialised testing required
  • 1 Year guarantee
  • Cannot fail open and waste steam
  • No moving parts = no maintenance
  • Precisely sized orifice
  • No spare parts required
  • Minimal heat loss off very small body
  • Continuous discharge - does not back up condensate
  • Excellent resistance to wear
  • Excellent resistance to water hammer
  • No specialised testing required
  • 10 Year guarantee

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Model Connection Applications  
DSV™ Screwed BSP
Socket Weld
Line drainage
Trace heating
Small to medium process applications
DSV-f™ Flanged:
PN40-PN100
Line drainage
Trace heating
Small to medium process applications
DSV-uc™
(In development)

Screwed BSP
Socket Weld

Line drainage
Trace heating
Small to medium process applications
SCi™ Screwed BSP Low to medium process applications - low pressure
MFi™ Screwed BSP Low to medium process applications - low pressure
nHRi™ Flanged
PN40-PN100
Medium to large process applications - high pressure