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Process Heat for Industrial Drying Equipment

Oil-fired hot air furnaces can supply heat for detergent powder spray drying, fertilizer drying, and ceramic and mineral powder drying. They can be integrated with spray drying towers, rotary dryers and other industrial drying equipment.

Direct-fired or indirect heating is selected according to material properties, fuel quality and product requirements. Where fuel oil is reliably available and production loads vary, an oil-fired system can be evaluated against local energy costs and operating conditions.

Oil-fired hot air furnace applications in industrial drying

Oil-fired hot air furnace supplying process heat for industrial drying equipment

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Fuel and Heating Options

Select the Fuel and Heating Method for Your Process

The burner, fuel treatment and atomization systems are configured for the specified fuel. Any requirement to switch fuels should be confirmed during system selection.

Fuel System Features and Selection Considerations
Light Diesel Oil Relatively simple fuel handling, with convenient start-up, shutdown and load adjustment. Operating costs depend on local fuel prices and operating hours.
Heavy Fuel Oil An option where supply is reliable and fuel pricing is favorable. Typically requires preheating, insulation and filtration, with additional storage, handling and maintenance considerations.
Heating Method How It Works Selection Conditions
Direct-Fired Combustion gases are mixed with air to reach the required temperature before entering the process equipment. Suitable where assessment confirms that the material and process can accept contact with gases from the specified fuel while meeting product quality requirements.
Indirect A heat exchanger transfers heat from combustion flue gas to process air, keeping the two streams separate. Suitable where direct contact with combustion flue gas is prohibited or product quality requirements call for separation.
Process Overview

Direct-Fired and Indirect Heating Processes

Direct-Fired Heating

Fuel Treatment & Supply → Atomization & Combustion → Air Mixing & Temperature Control → Drying Equipment → Process Exhaust → Treatment as Required → Discharge

Indirect Heating

Combustion:

Fuel Treatment & Supply → Atomization & Combustion → Hot Flue Gas

Process Air:

Process Air → Heating in the Heat Exchanger → Drying Equipment → Process Exhaust → Treatment as Required → Discharge

Flue Gas:

Hot Flue Gas → Heat Transfer in the Heat Exchanger → Treatment as Required → Discharge

In an indirect system, heat is transferred through the heat exchanger while flue gas and process air remain separate. Fuel preheating, insulation and exhaust treatment are configured according to fuel properties, process conditions and emission requirements.

Simplified oil-fired hot air furnace process flow

Simplified oil-fired hot air furnace process flow

System Configuration and Supply Scope

Equipment and Interfaces Defined for Your Project

The following systems can be configured to suit the project. Equipment, installation services and interface responsibilities are specified in the technical proposal and quotation. Fuel storage facilities, exhaust treatment and downstream drying equipment are included only where agreed.

Meibao configures the system around the required heat load, temperature, airflow and pressure drop of the downstream equipment. Services can include system design, equipment supply, installation, commissioning and technical support.

System Main Components and Functions
Fuel Supply & Treatment Fuel storage, transfer and filtration, with heavy-oil preheating and insulation where required.
Combustion & Furnace Burner, combustion chamber and furnace body matched to the fuel and heat load.
Hot Air & Heat Exchange Air-mixing and temperature-control equipment or a heat exchanger, with associated fans and ductwork.
Controls & Protection Combustion-load and hot-air temperature control, flame monitoring, fault alarms and combustion safety interlocks. Specific protection functions depend on the system design.

Existing-System Upgrades

Provide equipment photographs, nameplate data, details of the current heat source and the main operating issues. Meibao can use this information for a preliminary assessment of heat-source replacement and interface modifications. The subsequent technical proposal identifies equipment to be retained, modified or added.

Oil-fired hot air furnace system composition
Oil-fired hot air furnace system composition (1)
Oil-fired hot air furnace system composition
Oil-fired hot air furnace system composition (2)
Project Enquiry

Start with Your Material, Capacity and Fuel Conditions

For an initial assessment, please provide:

  • Project: Country and whether this is a new installation or an existing-system upgrade.
  • Production: Material to be dried and target throughput, specifying wet feed rate or finished-product output.
  • Fuel: Planned use of light diesel or heavy fuel oil. If undecided, tell us which fuels are available locally.
  • Available Information: Equipment photographs or a brief description of your requirements.

If available, also provide initial and target moisture content, hot air temperature, airflow, operating hours, product quality requirements and fuel specifications. Missing information can be clarified during technical discussions.

Based on the information provided, Meibao will assess the heating method, preliminary system configuration and supply scope, and identify the additional information needed for equipment selection and quotation.

Request a System Assessment

Zhejiang Meibao Industrial Technology Co., Ltd. is one of the most professional oil fired hot air furnace manufacturers and suppliers in China, featured by quality products and good price. Please rest assured to buy custom made oil fired hot air furnace from our factory.

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