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Comparison between the economic operation of biomass-fired chain grate boilers and coal-fired chain grate boilers

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Biomass-fired boilers and coal-fired boilers are very similar. They can be replaced by each other. And, the two types of boilers share the same furnace type, such as SZL series biomass-fired chain grate boilers and SZL series coal-fired chain grate boilers. But there is a big difference in operation costs. So, what is the difference between the economic operation of the two types of boilers? Next, we will make a comparison from the theoretical and practical aspects.
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SZL series biomass-fired/coal-fired steam boilers
Capacity: 4 - 35 t/h
Pressure: 1 - 2.5 Mpa
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DZL series biomass-fired/coal-fired steam boilers
Capacity: 2 - 20 t/h
Pressure: 1 - 2.5 Mpa
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YLW series biomass-fired/coal-fired thermal oil heaters
Capacity: 1400 - 29000 KW
Pressure: 0.8 - 1 Mpa



Comparison between the cost difference of coal-fired boilers and
biomass-fired boilers in actual operation
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A comparison between the advantages and disadvantages of the
two fuels during the boiler operation

ZOZEN boiler
ZOZEN boiler
Strength & Weakness of using biomass as the boiler fuel
Advantages of biomass fuel:
  • Biomass fuels not only comply with the national renewable energy policies and emission reduction policies but also have broad promotion prospects and significant social significance.
Disadvantages of biomass fuel:
  • The supply of biomass fuel is affected by factors such as the season and the production of farmers; Biomass fuel has high requirements for storage sites and fire protection levels; The price of biomass fuel fluctuates greatly.
  • Because of the complex source of biomass fuel, it has large calorific value fluctuations. And, some ions contained in the biomass fuel will corrode the boiler.
ZOZEN boiler
ZOZEN boiler
Strength & Weakness of using coal as the boiler fuel
Advantages of coal:

  • The supply of coal is sufficient. The production technology of coal-fired boilers is mature. And, the boiler operator has high familiarity with coal. Therefore, the costs of coal are lower than that of biomass fuel.
Disadvantages of coal:
  • The boiler room of coal-fired boilers, the coal storage shed, the coal unloading device and other auxiliary facilities cover a large area.
  • Some small and medium-sized industrial boilers have been phased out because of the pressure from environmental protection and emission reduction. The costs of three wastes treatment have increased a lot in recent years.




Successful cases - Adhering to a professional attitude, ZOZEN provides
customers with appropriate boiler selection guide
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20tph SZL series biomass-fired chain grate boiler project in Thailand


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ZOZEN successfully completed both the production and manufacture of boiler equipment but also the installation and c
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4tph DZL series biomass-fired chain grate boiler project in Malaysia


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A High efficiency biomass-fired boiler plays an indispensable role in our production line. ZOZEN’s biomass-fired boiler can totally meet our requirements.
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15tph SZL series biomass-fired chain grate boiler project in Papua New Guinea

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Our company was very impressed by ZOZEN's biomass-fired steam boilers for sufficient combustion and stable running. Thanks again for ZOZEN's help, and look forward to doing this again.
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10tph SZL series coal fired chain grate boiler project in Vietnam


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The whole steam boiler system had high thermal efficiency, which could fully meet the steam demand of our company. It also had excellent performance in terms of safety.
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10tph SZL series coal-fired chain grate boiler project in Pakistan


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ZOZEN not only provided us with high-quality steam boiler, but also provided us with perfect service. From the beginning of installation to the successful operation, ZOZEN arranged technicians
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4tph DZL series coal-fired chain grate boiler project in Indonesia


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After numerous inspections and investigations, we chose ZOZEN as the steam boiler supplier of our Indonesia branch. At present, ZOZEN DZL series steam boiler had been successfully delivered.
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