Coal fired boilers offer numerous advantages such as affordability, wide availability of fuel, high calorific value, high thermal efficiency, and strong adjustability.
Different Types of Coal Fired Boilers:
Categorized by medium, one of the coal fired boiler types includes coal-fired hot water boilers, coal-fired steam boilers and coal-fired thermal oil boilers.
Based on circulation methods, another one of the coal fired boiler types comprises natural circulation boilers and controlled circulation boilers. The controlled circulation boilers further include controlled circulation boilers, once-through boilers, and composite circulation boilers.
Regarding the arrangement of the drum, the third one of coal fired boiler types consists of vertical coal-fired boilers and horizontal coal-fired boilers.
Based on the combustion method, the fourth one of coal fired boiler types includes layer combustion boilers, suspension combustion boilers, swirling combustion boilers, and circulating fluidized bed boilers.
In this article, we will primarily focus on ZOZEN’s high-quality coal-fired steam boilers and coal-fired thermal oil boilers, which showcase ZOZEN’s commitment to safety, efficiency, and energy conservation.
ZOZEN’s Coal Fired Steam Boilers and Thermal Oil Boilers:
ZOZEN offers a wide range of coal fired boiler types, including steam boilers from four series: the SZL series with dual-drum vertical chain grate boiler, the DZL series with single-drum vertical chain grate boiler, the DHL series with angle tube chain grate boiler, and the SHL series with double-drum bulk chain grate boiler. These boiler types are versatile and can accommodate a variety of coal types such as bituminous coal, anthracite coal, and lean coal. ZOZEN’s specially designed furnace grates ensure smooth operation, while the combustion air system adopts independent compartments and a scientific sealing structure. The rational air distribution system achieves precise air-fuel ratio control, thereby enhancing combustion efficiency.
–DZL series, one of the coal fired boiler types: Capacity ranging from 2 to 10 tons per hour, working pressure from 1 to 2.5 MPa. It offers easy on-site installation, compact structure, short construction period, and reduced infrastructure investment.
–SZL series, one of the coal fired boiler types: Capacity ranging from 6 to 35 tons per hour, working pressure from 1 to 2.5 MPa. It ensures thorough fuel combustion with its chain grate and independent air compartments design.
–SHL series, one of the coal fired boiler types: Capacity ranging from 10 to 75 tons per hour, working pressure from 1.25 to 2.5 MPa. The addition of an air preheater increases the furnace inlet temperature, lowers the exhaust gas temperature, and improves boiler thermal efficiency.
–DHL series, one of the coal fired boiler types: Capacity ranging from 20 to 75 tons per hour, working pressure from 1.25 to 5.4 MPa. It achieves high combustion efficiency through a beam-type chain grate and membrane water-cooled walls, ensuring thorough fuel combustion.
Furthermore, ZOZEN offers another one of the coal fired boiler types, the YLW series horizontal coal-fired thermal oil boiler. With a boiler capacity ranging from 1400 to 29000 kW and working pressure from 0.8 to 1 MPa, this type of boiler exhibits several advantages:
Wide fuel adaptability, suitable for various coal types, including bituminous coal, lean coal, and anthracite coal.
Higher thermal efficiency compared to similar products, with a customized system efficiency that exceeds conventional systems by more than 5%.
Proper usage and maintenance can extend the boiler’s lifespan up to 20 years.
Tailor-made solutions, including flue gas waste heat recovery systems and boiler room layout schemes, effectively enhancesystem efficiency and reduce energy consumption.
ZOZEN’s Collaboration
ZOZEN provided an advanced 4-ton DZL series coal-fired steam boiler, one of the coal fired boiler types, to Cambodian pet food industry companies. This boiler adopts a horizontal three-pass water-fire tube chain grate structure and is equipped with modern combustion equipment and electrical control systems to optimize energy. Take advantage of and ensure ease of operation and safety. The use of the boiler not only meets daily production needs, but also helps the company take important steps in improving energy efficiency and supporting sustainable production.
ZOZEN’s Quality Assurance
In order to improve production efficiency and ensure product quality, ZOZEN Boiler not only introduced internationally advanced process equipment, but also independently developed a number of production and processing equipment, and has leading domestic automated production lines and patented production technologies. At the same time, the unique process standards of digital material creation, welding automation, and assembly molding, and strict control of boiler quality throughout the entire process, make every ZOZEN boiler a work of condensed ingenuity.
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