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Nsi Equipments Pvt Ltd
location Delhi Road, Meerut, Uttar Pradesh

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Our Products

  1. Chemical Reactors & Process Tanks 7 Products available
  2. Laboratory Equipments 6 Products available
  3. Dryers 5 Products available
  4. Grinding Mill 4 Products available
  5. Centrifuge Machine 3 Products available
  6. Powder Mixers 3 Products available
  7. Filters 2 Products available
  8. Industrial Seals 2 Products available
  9. Kitchenware And Cookware 2 Products available
  10. Wire Making & Cabling Machines 1 Products available
  11. Industrial & Engineering Products 1 Products available
  12. Heat Exchangers 1 Products available
  13. Gymnastics, Sports Equipment & Goods 1 Products available
  14. Industrial Blowers, Coolers & Fans 1 Products available
  15. Separating Machines 1 Products available
  16. Oil Plant And Extraction Machinery 1 Products available
  17. Generators, Turbines & Power Plants 1 Products available
  18. Gearbox & Gear Parts 1 Products available
  19. Impellers 1 Products available
  20. Valves & Valve Fittings 1 Products available
  21. Chemical Machinery & Plant 1 Products available
  22. Kilns 1 Products available
  23. Pressure Vessels 1 Products available
  24. Conveyor Roller 1 Products available
  25. Bearings And Bearing Components 1 Products available
  26. Repair & Maintenance Services 1 Products available
  27. Kitchen Appliances 1 Products available
  28. Generators 1 Products available
  29. Blades 1 Products available
  30. Domestic Fans, AC & Coolers 1 Products available
  31. Grinding Parts 1 Products available
  32. Others Products 8 Products available

Dryers

Our Complete range of products are Spin Flash Dryer, ROTARY DRYER CONSTRUCTION, Rotary Dryers, Rotary Drum Dryers and Spray Dryer.

Spin Flash Dryer

Spin Flash Dryer

Spin Flash Drier is used for effective and efficient method of removal of surface or on bound moisture from a feed product. Spin Flash Driers are designed for continuous drying of cohesive and non-cohesive pastes, filter cakes and high viscosity liquids. The wet cake appears granular and gets fluidized. Instantaneous exchange of heat and mass take place. The dried materials are taken in the collector as powder products.

PRINCIPLE OF SPIN FLASH DRYING
The Spin Flash Drying is more often in the line of an agitated fluidized bed system. The drying agitator works as rotor to break the lumps and the hot air enters at reasonably high velocities to give dynamic action to dry and disintegrate the product.
Fresh air is sucked through hot air generator, which can be direct or indirect the nature. The entry to the drying chamber is tangential to give whirling air suction across the dryer. The hot air generator can be liquid, solid or gaseous fuel fired. The feed screw pushes the material to the drying chamber. The drying chamber has a rotor driven from the bottom. The rotor has specially designed scrapper blades and disintegrator for breaking the lumpy mass into smaller fragments.
The lumps, which are broken by the rotor, start drying and simultaneously disintegrating in the stream of hot air.
The airborne fine powder particles get carried to the top of the drying chamber and a classifier classifies them to the required size. The particles with larger diameter go back to the chamber, while the fine travel through with the air for final collection through Reverse Pulse Bag Filters, wherein almost 100% powder recovery is achieved.
ADVANTAGES OF SPIN FLASH DRYING SYSTEM
  1. Energy consumption is much less than spray dryers, fluidized bed dryers, flash dryers, rotary dries, tray driers etc.
  2. Space requirement for installing this dryer is much less than spray dryer, pneumatic dryer, fluidized bed dryer and rotary dryer etc.
  3. It is a completely automatic plant with temperature controller etc.
  4. Dry product discharge section of the dryer can be installed in your product packing section, hence cost of transport of dry product to the finished product section can be eliminated.
  5. Pulverizing after drying will not be required. The unit will dry, classify and convey all in a single operation.
  6. Wet cake can be directly fed from filter/centrifuge to lump breaker bin, which feeds the cake in to the dryer and hence all intermediate handling of material can be eliminated. The entire system is closed and hence any chance of contamination is eliminated.
  7. Since it is a closed system, wastage and dusting etc. are totally eliminated resulting in clean environment, zero wastage and total recovery of product and pollution free atmosphere.
  8. It is possible to vary the bulk densities also by minor changes in the classifier situated near the top of the dryer.
COMPONENTS OF SPIN FLASH DRYER
(A) HOT AIR GENERATION SYSTEM
This will consist of a hot air generator - direct/indirect/finned tube heat exchanger type. The unit would have to be connected to the dryer by means of a Hot Air Duct which will have to be insulated.
(B) LUMP BREAKER CUM SCREW CONVEYOR
This unit would be connected to the bottom of suitable wet product storage and consists of two shafts mounted with special lump breakers meshing with each other, below a dual screw conveyor will feed material in to the dryer. The lump breakers shafts and the screw conveyors will run by a single motor with gear box through a system of meshing gears, bearings, stuffing box etc. This unit is of a special design for the type of cake and is very robust and sturdy.
(C) MAIN DRYER
It is a vertical cylindrical chamber, at the bottom shell is mounted a shaft with a high-speed disperser and above mounted on it a high-speed scraper. At the top of this section is a nozzle in to which the screw conveyor feed the material. A tangential nozzle is provided at the bottom to allow inlet hot air. The drive is through suitable motor through V - belts and pulleys.
(D) BAG FILTER
Bag Filter for separation of powder from the air will be provided. The Bag Filter is fully automatic and self-cleaning with no internal moving parts. The filter will consists of SS housing with manhole, hopper for product, air inlet and outlet flange, air nozzle, venture pipes, solenoid valves and all internal compressed air piping, filter bags and adjustable timer.
(E) ROTARY VALVE
A rotary air lock valve for discharging material from the filter will be provided. This will be operated by means of suitable motor with suitable gear box.
(F) EXHAUST BLOWER
A centrifugal exhaust blower will be provided. Fan will be coupled with suitable totally enclosed fan - cooled motor by belt drive.
(G) PIPING
All components comprising the plant are interconnected with suitable ducting.
(H) CONTROL PANEL
A control panel mounted with necessary starters, switches, push buttons etc. and pre - wired for all motors comprising the system.
(I) INSTRUMENTATION
All necessary instrumentation necessary for the safe and simple operation of the plant, like temperature controller local temperature indicators etc.
FEATURE
  • High drying efficiency and low energy costs. The energy efficiency of such systems is up to eight percent, which is very high for such types of drying systems.
  • Direct drying and no initial diluting.
  • Continuous processing with short drying time.
  • Ideal for replacing conventional drying systems such as Fluid Bed Dryers, Pneumatic Flash Dryers etc.
  • Pulverizing, conveying, classifying etc. can be done on the same system.
  • Space utilization is most economical and operations are totally automatic. Most of the time, the product can be directly bagged or sent for further processing.
  • Self-regulating, self-adjusting system, which involves minimal attention even while operating at capacity.
  • The system being under negative pressure, there is no dusting and therefore no wastage. The area is free from environmental hazards. Clean operation with minimal manual handling is an important feature of the system.
APPLICATION
  • Direct contact dryers for bulk drying of various products such as inorganic chemicals, bulk drugs, dyestuffs, insecticides foodstuffs etc.
  • Chemical industry products like Zinc Carbonates, Calcium Carbonate, Magnesium Carbonate, Cobalt Carbonate, Zirconium, Red Ferric Oxide, Aluminum Hydroxide, Lead Sulphate, Zinc Sulphate, Fire retardant Super - fine Calcium Carbonate, Zinc Oxide, Barium Sulphate, kaolin, Pigment, Dyestuff, Pesticide, Mancozeb etc.
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ROTARY DRYER CONSTRUCTION

ROTARY DRYER CONSTRUCTION

The dryer is made up of large rotating cylindrical tube, supported by two nos. riding rings(tyres) running over a set of support rollers with a stationary feed and a discharge hood, mounted over a channel frame with suitable sealing arrangement between the shell ends and hoods. The dryer slopes slightly so that the discharge end is lower than the material feed end in order to convey the material through the dryer under gravity. Fabricated in carbon, stainless steel and MS + rubber lined with flights or lifters are welded or bolted internally to produce the cascade of particles falling through hot gas stream. The mechanical lifting of the material allows drying the materials from filter cake to coarse minerals through hot gas stream, also helps in breaking-up lumps for uniform drying. The length of the drum may range from 4 to 10 times of its diameter and usually operates with 12 to 15% of their volume filled with the material. The Hot Air Generator, the feeding equipment and the dust collection equipments like cyclone and bag filter are the part of the Rotary Dryer system.

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Rotary Dryers

Rotary Dryers

The Rotary Dryer is a type of industrial dryer employed to reduce or to minimize the liquid moisture content of the material it is handling by bringing it into direct contact with a heated gas to evaporate the water. Rotary Dryers are suitable for drying of wide range of materials continuously because of its ability to process materials having considerable variation in size and composition.

Despite introduction of new technologies the long established Rotary Dryer is still widely regarded as the workhorse of many process industries. The robust yet simple construction combines flexibility with reliability enabling this type of dryer to handle vast range of materials.

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Rotary Drum Dryers

Rotary Drum Dryers

Drum Dryeris a drying system in which water / solvent removed from a solution / suspension by the heating source. Drum Dryer is a slow speed rotating drum, a part of the drum is submerged in an attached trough contains wet feed. Heat is applied to the inside of the rotating drum through drum hollow shaft and thorough rotary joint and the wet feed clings to the outside of the drum.

The material is dryed during a part of revolution and is removed by a blade or scraper. The condensate inside the drum will come out through other port of rotary joint The operation of the drum dryer is controlled by the adjustment of the drum speed and the heat applied.

The material of construction and the size of the drum depend upon the character of the product and its capacity

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Spray Dryer

Spray Dryer
Spray drying is the transformation of feed from a fluid state into a dried form by spraying the feed into a hot drying medium. The feed is pumped from the product feed tank to the atomizing device, located in the air disperser at the top of the drying chamber. The drying air is drawn from the atmosphere via a filter by a supply fan and is passed through the air heater to the air disperser. The atomized droplets meet the hot air and the evaporation takes place, while cooling of the air happen simultaneously. In Spray Drier, after the spray is dried in the drying chamber, the majority of the dried product falls to the bottom of the chamber and enters to a pneumatic conveying and cooling system.
The fines, which are the particles with a small diameter, will remain in the air, and it is therefore necessary to pass the air through cyclones to separate the fines. The fines leave the cyclone at the bottom via a locking device and enter the pneumatic system, too.
The air passes from the cyclone to the atmosphere via the exhaust fan. The two fractions of powder are collected in the pneumatic system for conveying and cooling and are passed through a cyclone for separation, after which they are bagged off. The instrumentation comprises indication of the temperature of the inlet and outlet air, as well as automatic control of the inlet temperature by altering the steam pressure, amount of oil or gas to the air heater, and automatic control of the outlet temperature by altering the amount of feed pumped to the atomizing device.

There are two basic types of atomization :
  1. Nozzle atomizer
  2. Disc atomizer
Spray Drier Configuration :
  1. Co-Current Flow
  2. Counter Current Flow
Advantages Of Using A Spray Dryer For Drying Application :
  1. Control of particle size. Spray dryers can typically produce between 30 to 500 micron average particle sizes, in a bell shaped distribution.
  2. The shape of most spray dried particles is spherical, which provides for fluid-like flow properties.
  3. Spray drying produces the most homogeneous product.
  4. Many heat sensitive products can be spray dried easily at relatively high inlet temperatures.
  5. Permits drying without thermal degradation.
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