Hot Air Generators.

We manufacture high efficiency and superior quality Hot Air Generators. Our hot air generators come with robust construction easy operation and low maintenance. Our hot air generators are manufactured using right metallurgy, latest technology, under the supervision of experienced professionals. We follow a stringent quality control norm throughout the process of production and every individual product is verified by our quality controllers before the final dispatch to the clients.

RAYGM offers tow types of Hot Air Generators based on fuel used.

  1. Gas / Liquid (Fluid) Fired Hot Air Generators.
  2. Solid Fuel Fired Hot Air Generators.

Based on Mixing of combustion Products with process air there are again 2 types of Hot Air Generators are offer.

  1. Direct Fired Hot Air Generators (Process Air and Combustion products are mixed with each other)
  2. Indirect Fired Hot Air Generators (Process Air and Combustion products are not mixed with each other)

Direct Oil or Gas Fired Hot Air Generator

The construction is double walled concentric cylindrical system either mounted horizontally or vertically. Burner is mounted in a combustion chamber which is inner shell, either provided with suitable (refractory) lining or bare stainless-steel construction. The fresh air from blower is supplied at required pressure to the chamber. The air envelopes the combustion chamber and absorbs the radiant and conduction heat from its surface and then mixes with completed combustion gases in a conical mixing chamber. The hot air, thus generated is let out from hot air generator at controlled temperature to the process.

flash-dryer
flash-dryer

Design

  • Custom Designed to Customer Satisfaction
  • Sturdy Designs for Long life.
  • Designed to take care expansion in the system

Fuel used

  • FO / HSD / LDO / SKO / LPG / CNG / PRODUCER GAS / BIO GAS / COKE OVEN GAS / BLAST FURNACE GAS

Burner

  • New / Refurbished as per customer requirements.

Maximum Operation Temperature

  • ≤ 750oC

Maximum Heating Temperature

  • ≤ 1,00,00,000 Kcal/Hr

Maximum Air Quantity

  • ≤ 200,000 Nm3/Hr

Material

  • Carbon Steel refractory lined, Stainless Steel 321, Stainless Steel 310, etc. Special Metallurgy on request.

Automation & Controls

  • MCC / ICP
  • PLC SCADA
  • DCS

Features

  • Power efficient
  • Quick heat processing
  • Low maintenance
  • High thermal efficiency upto 95%

Indirect Oil or Gas Fired Hot Air Generator,

the construction is 5 shell concentric cylindrical system either mounted horizontally or vertically. Burner is mounted in a combustion chamber which is inner shell. The fresh air from blower is supplied at required pressure to the outermost shell to absorb heat and minimise losses. The Process air passes through shell no. 5,3 and on then 2 next to combustion chamber and absorbs the radiant and conduction heat from its surface and then goes to area of application. The combustion products are not mixed with process air. To minimise the heat losses in flue gas additional finned tube heat exchanger is provided based on requirement.

flash-dryer

Design

  • Custom Designed to Customer Satisfaction
  • Sturdy Designs for Long life.
  • Designed to take care expansion in the system
  • Designed to take care of Proper heat dissipation and distribution to avoid cracking in inner shell.

Fuel used

  • FO / HSD / LDO / SKO / LPG / CNG / PRODUCER GAS / BIO GAS / COKE OVEN GAS / BLAST FURNACE GAS

Burner

  • New / Refurbished as per customer requirements.

Maximum Operation Temperature

  • ≤ 350oC

Maximum Heating Capacity

  • ≤ 30,00,000 Kcal/Hr

Maximum Air Quantity

  • ≤ 100,000 Nm3/Hr

Material

  • Carbon Steel Spray Galvanized, Stainless Steel 321, Stainless Steel 310, etc.

Automation & Controls

  • MCC / ICP
  • PLC SCADA
  • DCS

Features

  • Power efficient
  • Quick heat processing
  • Low maintenance
  • High thermal efficiency upto 80%
  • No thermal concentration zones to avoid cracking of tubes and heat exchangers.

Solid Fuel Fired Hot Generator

100% combustion of fuel and heat recovery is ensured.
Solid fuel fired hot air generators use coal, Pet-coke, Lignite, Wood wastes, chips saw dust, Agricultural wastes (such as rice husks, cotton stacks, soybean shells, ground nut shells, etc) or briquettes, as fuel.


Direct Fired Hot Air Generators.

This works on the principal of Fluid Bed Combustion.
The FBC combustor consists of a refractory lined furnace, ash settler, mixing zone for dilution air, Coal bunker with Screw feeder etc. The crushed coal along with an inert medium is fluidised on a bed of air and is combusted in refractory lined furnace to generate the required heat output and then mixed with Dilution air stream so as to give the required temperature and quantity of hot gases. The system is provided with combustion cum Fluidization air fan with necessary damper. A separate dilution air fan with damper is provided for the dilution of the Hot Gases produced through the fluidised bed combustion.


Indirect Fired Hot Air Generators.

This works on the principal o Fluid Bed combustion and heat exchange through shell and tube heat exchangers.
The Fluidised Bed Combustion fired Hot air Generator system consist of a Radiative Heat Exchanger (1st Pass), Convective Heat Exchanger (2nd pass and 3rd pass) and a heat recovery unit (4th pass) followed by Air pollution equipment like Cyclones and Bag houses. In case of high sulphur in fuel dry gas scrubbing too can be installed.
All heat exchangers are designed with proper ash discharge for low wear and tear, having optimal velocities for low pressure drop and high heat transfer and finest available materials to give long maintenance free life.

flash-dryer
flash-dryer

Design

  • Custom Designed to Customer Satisfaction
  • Sturdy Designs for Long life.
  • Designed to take care expansion in the system
  • Designed for lowest Possible pressure drop and highest possible heat transfers co-efficient.

Fuel used

  • Coal, Pet-coke, Lignite, Wood wastes, Saw dust, Rice husks, Cotton stacks, Soybean shells, Ground nut shells, briquettes etc.

Maximum Operation Temperature at the outlet

  • ≤ 450oC

Maximum Heating Capacity

  • ≤ 75,00,000 Kcal/Hr

Maximum Air Quantity

  • ≤ 200,000 Nm3/Hr

Material

  • Carbon Steel refractory lined, Carbon Steel Spray Galvanized, Stainless Steel 304, Stainless Steel 316, Stainless Steel 321, Stainless Steel 310, etc.

Automation & Controls

  • MCC / ICP
  • PLC SCADA
  • DCS

Features

  • Power efficient
  • Quick heat processing
  • Low maintenance
  • High thermal efficiency upto gross 75%
  • No thermal concentration zones to avoid cracking of tubes and heat exchangers.
  • Long Life