What is the calorific value of common boiler coal?
The fuel of the boiler needs to be determined in advance before the user adopts the equipment, and the calorie of coal used in the boiler directly affects the choice of the type of coal-fired boiler. Here, ZOZEN Boiler summarizes the calorific value of common boiler coal calories, hoping to be helpful to everyone.
Common boiler coal calorific value is 5500kcal/kg-7000kcal/kg.
China's power coal mainly includes bituminous coal, anthracite and lignite. Coal is mainly composed of carbon (C), hydrogen (H), oxygen (O), nitrogen (N), sulfur (S) and some rare elements and minerals. The content of moisture, calorific value, ash content, volatile matter and fixed carbon in coal can be determined from industrial analysis. Besides how many calories the boiler uses, other factors also affect the combustion efficiency of the boiler.
How many calories of coal are used in the boiler? Naturally, the coal with high calorific value and easy burnout should be selected, and the unit price of fuel should be balanced for comprehensive consideration.
ZOZEN Boiler has been designing and manufacturing coal-fired boilers since its establishment, and its technology is mature, with projects all over the world in nearly 100 countries and regions. The company pays attention to technological innovation. In the process of boiler design, technicians deeply study how many calories the boiler uses, optimize and adjust the boiler body and system, add economizer, air preheater and other energy-saving equipment, effectively improve the thermal efficiency, and make the boiler output sufficient.
At present, the coal-fired boilers covered by the company can be divided into six series: SZL series coal-fired boiler, DZL series coal-fired boiler, SHX series circulating fluidized bed boiler, DHX series circulating fluidized bed boiler, DHL series corner tube coal-fired boiler, SHL series double-drum coal-fired boiler and YLW series coal-fired thermal oil heater.
-
SZL series coal-fired steam boilerLive Chat6-35 t/h1-2.5 MPa
-
DZL series coal-fired steam boilerLive Chat2-10 t/h1-2.5 MPa
-
DHL series coal-fired steam boilerLive Chat20-75 t/h1.25-5.4 MPa
-
Email us
-
WhatsApp: +86 18861589035
WeChat: +86 13506150756
Live Chat

-
On the edge of the tropical jungles of Sumatra, Indonesia, the hum of machinery blends with the scent of palm fruit, painting a busy picture of the local palm oil processing industry. As a key global production base, Indonesian oil processing enterprises have a high dependency on reliable thermal energy supply. Booming Oil Processing Industry in Indonesia Recently, Wuxi ZOZEN Boiler Co., Ltd. ("ZOZEN Boiler") successfully delivered and commissioned a 15 t/h SZL series coal-fired steam boiler...03 Feb 2026 -
As clean heating upgrades continue to accelerate across northern China, high-efficiency and environmentally compliant heating equipment has become essential to ensuring winter heating security while supporting the country’s carbon reduction goals. In Tianjin, several large district heating companies have independently selected the same core solution — the ZOZEN SZS series gas-fired hot water boiler — delivering stable heat throughout the winter while contributing to improved ai...27 Jan 2026 -
The Regulations on the Administration of Rare Earths, effective from October 1, 2024, are accelerating the rare earth industry’s standardized and intensive transformation under the framework of resource protection, compliant governance, and green development. As demand for rare-earth permanent magnet materials from sectors such as new energy vehicles, wind power, and intelligent manufacturing stabilizes and improves, industry sentiment is rebounding. As the “World Capital of Rare Ear...20 Jan 2026











