Updating an industrial heating system does not always require rebuilding the entire production line. In many factories, a properly designed furnace retrofit can improve heat stability, automation, and operating control while keeping the main production equipment in use.

Zhejiang Meibao Industrial Technology Co., Ltd. recently completed a Coal-to-Gas Hot Air Furnace upgrade for a large chemical enterprise. The new natural gas heating system was designed to work with the customer’s existing process and site conditions.

Changing from coal to natural gas involves several connected systems. The furnace must provide the required hot air temperature and volume while remaining compatible with the original production line.

During the project, Meibao worked on:

• Natural gas combustion control
• Combustion air supply
• Hot air temperature adjustment
• Automatic operating system
• Safety interlock protection
• Connection with existing process equipment

These improvements helped the upgraded system enter stable operation after commissioning.

A reliable hot air furnace should respond to changes in production demand and keep heat output within the required range.

The upgraded system provides more stable heat supply and improved automation. Operators can manage the heating process more clearly, while the safety interlock system supports controlled operation during startup, production, and shutdown.

Coal-to-gas heating upgrades can be used in different production fields, including:

• Chemical processing
• Detergent powder production
• Feed drying
• Fertilizer processing
• Building material production
• Other industrial heating and drying systems

The final solution should be based on fuel supply, required temperature, air volume, existing equipment, factory layout, and production conditions.

Meibao provides engineering support for industrial heating projects, including system evaluation, equipment design, manufacturing, installation guidance, commissioning, and technical training.

For manufacturers planning to replace an older coal-fired heat source, a customized natural gas hot air furnace can provide a practical path toward more stable and controlled production.

Contact us to discuss your industrial heating upgrade project.

Email: mbl@cnmbl.com