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Peat is an important organic matrix widely used in horticulture, soil improvement and biofuel. Since the moisture content of raw peat is as high as 60%-80%, it must be dried (reduced to below 30%) to meet storage and processing requirements. As the key heat source equipment of the peat dryer, the combustion efficiency, temperature control accuracy and environmental performance of the gas burner directly affect the drying effect and operating costs.
Problem
Spanish peat processing companies originally used coal-fired hot air furnaces with belt dryers, but faced the following problems:
1. Low thermal efficiency: Incomplete coal combustion, heat loss of 25%, and high energy consumption cost per ton of peat drying.
2. Serious pollution: Sulfide and dust generated by coal combustion cause excessive exhaust emissions, which does not comply with EU environmental regulations.
3. Uneven drying: The hot air temperature fluctuates greatly (±40℃), causing the peat to be partially over-dried or agglomerated, affecting the quality of the finished product.
Optimization solution for gas burners
The company introduced a fully automatic low-nitrogen gas burner (compatible with natural gas/biogas), which is matched with a high-efficiency cyclone dryer. Its core advantages are as follows:
1. High thermal efficiency and precise temperature control
Using proportional combustion technology (automatic optimization of air-fuel ratio), the thermal efficiency is increased to more than 92%, and the drying energy consumption is reduced by 30%.
2. Clean combustion, zero pollution emissions
FGR (flue gas recirculation) low nitrogen technology, NOx emissions <50mg/m³, far below the EU standard (100mg/m³). Natural gas combustion is free of sulfides and dust, and exhaust gas can be discharged directly without additional purification equipment.
3. Fuel flexibility
Compatible with natural gas and biogas (biogas produced by peat fermentation), fuel costs are reduced by 20%-40%.
4. Fully automated operation
Integrated PLC+touch screen control, automatic ignition, flameout protection, fault alarm, to achieve unattended operation.
Results
Productivity improvement: drying efficiency increased by 35%, and daily processing capacity increased from 80 tons to 110 tons.
Environmental compliance: 100% of exhaust gas emissions met the standards, and the company obtained the EU Ecolabel.
Quality optimization: the qualified rate of moisture content of peat finished products increased from 90% to 98%, and the customer return rate was zero.
Conclusion
Gas burners have become an ideal choice for modern peat drying systems due to their high thermal efficiency, low emissions and intelligent control advantages. This case proves that by upgrading the burner, the company can not only meet strict environmental protection requirements, but also significantly reduce operating costs and improve product competitiveness.
