Gas-Fired / Oil-Fired Hot Air Furnace — Pakistan
Gas-Fired / Oil-Fired Hot Air Furnace Project in Pakistan
Meibao supplied a gas-fired / oil-fired hot air furnace system for an industrial project in Pakistan.
The system integrates an automatic burner, combustion chamber, secondary-air system, hot-air mixing, temperature control and safety interlock. High-temperature gas generated during combustion is mixed with controlled secondary air to produce process hot air for downstream drying or calcining equipment.
Project Information
| Project Location | Pakistan |
| Equipment | Gas-fired / oil-fired hot air furnace |
| Equipment Series | MBQ/Y |
| Available Fuel | Gas or fuel oil |
| Heating Method | Direct-fired |
| Main Process | Automatic fuel regulation, combustion, secondary-air mixing and hot-air delivery |
| Control Method | Automatic combustion and temperature control |
| Safety System | Safety interlock control |
| Project Scope | System engineering, equipment manufacturing, installation guidance and commissioning support |
| Project Status | Equipment supplied for the Pakistan project |
Project Overview
Fuel is delivered to the burner through the fuel-supply pipeline. The burner automatically regulates the combustion process before introducing the fuel and combustion air into the combustion chamber.
The combustion chamber generates high-temperature gas. Secondary air passes through the chamber jacket and mixes with the high-temperature gas to produce the process temperature required by the downstream equipment.
The mixed process hot air can be adjusted between 100°C and 1,000°C before being delivered through the hot-air duct system to the connected dryer or calcining equipment.
Process Flow
Gas or Fuel Oil
→ Fuel-Supply Pipeline
→ Automatic Burner Regulation
→ Combustion Chamber
→ High-Temperature Combustion Gas
→ Secondary-Air Supply
→ Hot-Air Mixing
→ Temperature Adjustment
→ 100–1,000°C Process Hot Air
→ Downstream Drying or Calcining Equipment
Process Description
1. Fuel Supply
Gas or fuel oil is transferred to the burner through the corresponding fuel-supply system. The fuel supply is coordinated with the burner operating conditions.
2. Automatic Burner Regulation
The burner regulates the fuel and combustion-air supply according to the required heat output and process temperature.
This regulation supports coordinated combustion and automatic furnace operation.
3. Combustion Chamber
The fuel burns inside the combustion chamber and generates high-temperature gas. The chamber provides the required space and conditions for the combustion process.
4. Secondary-Air Mixing
Secondary air passes through the combustion-chamber jacket and enters the hot-air mixing section.
The secondary air mixes with the high-temperature combustion gas to adjust the final hot-air temperature.
5. Process Temperature Control
The mixed hot air is controlled within a temperature range of 100–1,000°C. The operating temperature is set according to the requirements of the connected production equipment.
6. Hot-Air Delivery
The adjusted hot air is transferred through the duct system to the downstream dryer, drying chamber, fluidized bed, spray-drying tower or calcining equipment.
7. Automatic Control and Safety Interlock
The control system coordinates burner operation, air supply and hot-air temperature.
The safety interlock system connects the main operating conditions of the fuel supply, burner, air system and temperature-control system.
Equipment Series Technical Data
The following data describe the MBQ/Y gas-fired / oil-fired hot air furnace series:
|
Item |
Technical Data |
|
Available fuel |
Gas or fuel oil |
|
Heating method |
Direct-fired |
|
Process hot-air temperature |
100–1,000°C |
|
Design thermal efficiency |
Above 98% |
|
Heat-supply range per unit |
500,000–15,000,000 kcal/h |
|
Main components |
Burner, combustion chamber and secondary-air system |
|
Temperature adjustment |
Automatic |
|
Main application |
Industrial drying or calcining |
Main Equipment and Systems
- Gas-fired or oil-fired burner
- Fuel-supply pipeline
- Fuel regulating system
- Combustion chamber
- Secondary-air fan
- Combustion-chamber air jacket
- Hot-air mixing section
- Temperature monitoring instruments
- Automatic temperature-control system
- Safety interlock system
- Electrical control cabinet
- Hot-air outlet and ductwork
- Supporting structure and inspection components
- Downstream-equipment interface
Main Technical Characteristics
Automatic Combustion Control
The burner regulates fuel and combustion air according to the required operating conditions.
Wide Temperature Range
The secondary-air mixing system adjusts the process hot-air temperature between 100°C and 1,000°C.
High Direct-Fired Heat Utilization
The furnace series is designed with a thermal efficiency above 98%. The combustion gas is used as process hot air after controlled mixing, without an intermediate heat exchanger.
Wide Heat-Supply Range
The MBQ/Y furnace series covers a single-unit heat-supply range from 500,000 to 15,000,000 kcal/h.
Integrated System Control
Burner operation, air supply, temperature regulation and safety interlock are integrated within the furnace-control system.
Related Coal-to-Gas Retrofit Experience
Meibao has also completed coal-to-gas hot-air-furnace upgrades for existing industrial production lines.
The engineering work for this type of conversion covers:
- Assessment of the existing heating system
- Gas-fired burner and fuel-supply configuration
- Combustion-system adjustment
- Air-supply-system optimization
- Temperature-control-system integration
- Safety-interlock-system configuration
- Connection with the existing drying equipment
- Installation and commissioning
- Operator training
This experience enables Meibao to support both new gas-/oil-fired furnace projects and the conversion of existing coal-fired heating systems.
Compatible Industrial Applications
The gas-fired / oil-fired hot air furnace series can be connected to:
- Spray-drying towers
- Drying chambers
- Fluidized-bed dryers
- Rotary drying equipment
- Calcining equipment
- Other industrial hot-air systems
Applicable industries include:
- Detergent and daily chemicals
- Ceramics
- Fertilizer
- Chemical processing
- Feed production
- Building materials
- Food processing
- Pharmaceutical production
Technology Background
The same biomass hot air furnace technology is also used in:
- Detergent powder drying
- Fertilizer drying
- Feed-additive drying
- Gypsum drying
- Kaolin drying
- Coating-material drying
- Other industrial drying processes
Technology Background
The MBQ/Y gas-fired / oil-fired hot air furnace series incorporates multiple patented technologies.
Its design combines burner regulation, combustion, secondary-air mixing and automatic temperature control to provide process hot air for different industrial production systems.
Project Delivery
The Pakistan project supplied an integrated hot-air furnace system covering:
- Fuel-supply connection
- Automatic burner
- Combustion chamber
- Secondary-air supply
- Hot-air mixing
- Temperature monitoring and control
- Safety interlock
- Hot-air outlet and duct connection
- Installation and commissioning support
Meibao’s Project Capabilities
Meibao provides industrial heating services covering:
- Heating-process design
- Gas- and oil-fired furnace engineering
- Coal-to-gas heating-system conversion
- Burner and fuel-system configuration
- Equipment manufacturing
- Air-supply-system design
- Temperature-control-system design
- Safety-interlock integration
- Installation guidance
- Commissioning support
- Operator training
- Overseas technical service
Contact Us
Planning a new gas-/oil-fired hot air furnace or upgrading an existing coal-fired heating system?
Send us your fuel type, fuel pressure, required temperature, air volume, heat demand, material information, drying equipment and site conditions. Meibao will prepare the corresponding furnace and heating-system configuration.