Foaming furnace original process is 4 tons of gas boiler, heating thermal oil to 235 degrees, the oil pump 55 kW to the foam furnace heat exchanger heating, production line for five groups of heaters, a total of 25 meters of the oven, each time up to the process temperature of 200 degrees takes 1.5 to 2 hours, the heat utilization rate is low, on September 25, 2022, began to improve the foaming furnace, dismantle the boiler to the thermal oil heat exchanger to add a 5-group combustion engine. Using the burner exhaust gas heating oven, October 8, the transformation is completed, the heating time is only 25 minutes, successful start-up experiments.

Foaming furnace heating from the thermal oil boiler heating to improve the direct-fired heating has several advantages:

1. Higher heating efficiency: direct-fired heating will burn the fuel directly, the heat is transferred directly to the foam furnace, avoiding the energy loss of heat transfer through the heat exchanger. This improves heating efficiency and reduces energy consumption.

2. Faster heating speed: Direct-fired heating reacts quickly and can provide high temperature quickly, shortening the heating time of the foaming furnace. This is beneficial to the efficiency and output of the production process.

3. Simpler operation and maintenance: Heat transfer oil boilers require additional heat exchangers and heat transfer oil systems, which require more complex operation and maintenance. Direct-fired heating, on the other hand, is much simpler and relatively inexpensive to operate and maintain.

4. Less environmental impact: thermal oil boilers may produce exhaust gases and waste heat, requiring proper ventilation and exhaust gas treatment measures. Direct-fired heating reduces these emissions and environmental impacts.