A steam boiler is one of the fundamental industrial systems used in process heating, sterilisation, drying and energy applications. A correctly selected steam boiler directly affects not only steam production but also fuel consumption, production continuity, maintenance costs and operational efficiency.
At HİSARMAK, we manufacture steam boilers of various types and sizes, ranging from 1 to 100 tonnes of steam per hour, tailored to fuel type, capacity requirements and application. Scotch-type, D-type, stoker-fired, rotary grate, fluidized bed, moving grate and biomass-fired solutions are designed for safe, efficient and long-lasting use in sectors such as textiles, food, chemicals, energy and similar industries.
Steam Boiler
Inquiry Form
Scotch Type Steam Boiler
You can visit our page for Scotch Type Steam Boiler models, features and prices, you can get detailed information by contacting us.
More Details 
Rotary Grate Steam Boiler
Rotary Grate Steam Boiler In this combustion system, from the moment the coal is poured from the service bunker to the grate, it moves towards the furnace with the rotation speed of the grate.
More Details 
Fluidized Bed Steam Boiler
Fluidized Bed Boiler These are fully automatic controlled, high efficiency, environmentally friendly and water tube boilers designed for solid fuel combustion.
More Details 
Stoker Type Steam Boiler
Boilers with Stokers The hot gases formed as a result of combustion pass through the combustion chamber, which we call the first pass, and are transported to the rotating front part towards the second smoke pipes.
More Details 
D Type Steam Boiler
D Type Steam Boiler It is preferred where high pressure and high capacity are required. Water tube steam boiler design and production are made in accordance with EN 12952 standards.
More Details 
Moving Grate Steam Boiler
Pre-Hob Advanced Steam Boiler Thanks to the movable grate combustion system, which is also applied in solid fuel systems, proportional operation and high efficiency are provided according to the heat requirement in the system.
More Details 
Biomass Fueled Steam Boiler
Biomass and industrial waste are efficiently converted into steam using moving grate systems. Our boilers are widely used in Europe, offering high efficiency and long service life.
More Details
The table below has been compiled to compare different types of steam boilers in terms of capacity, boiler design, fuel type and applications.
| Steam Boiler Type | Boiler Structure / Combustion System | Fuel Type | Capacity Range | Technical Operating Data | Key Technical Advantages | Best Fit Applications |
|---|---|---|---|---|---|---|
| Scotch Type Steam Boiler | Fully cylindrical fire-tube / smoke-tube steam boiler with large water volume | Liquid fuels Gas fuels | 1 – 25 tons/hour | 92% efficiency 95% with economizer |
|
|
| Rotary Grate Steam Boiler | Rotary grate solid fuel combustion system | 5-14 mm lignite coal Biomass Industrial wastes | 3 – 25 tons/hour | 0 – 25 bar |
|
|
| Fluidized Bed Steam Boiler | Fluidized bed, low-temperature combustion technology | Coal Industrial wastes | 5 – 60 tons/hour | 0 – 25 bar 90% combustion efficiency |
|
|
| Stoker & Automatic Fuel Loading Steam Boiler | Front furnace stoker system with mechanical fuel loading | 0-25 mm coal | 0 – 10 tons/hour | 0 – 15 bar Low investment cost |
|
|
| D Type Steam Boiler | Water-tube D type industrial steam boiler | Natural gas LNG Fuel oil | 5 – 100 tons/hour | 90% – 92% efficiency Max. 350°C |
|
|
| Moving Grate Steam Boiler | Front furnace boiler with moving grate combustion system | 0-60 mm coal | 0 – 15 tons/hour | 0 – 15 bar Low investment cost |
|
|
| Biomass Fueled Steam Boiler | Moving grate system for biomass and waste combustion | Biomass Forest and agricultural waste Industrial waste Sewage sludge Animal manure RDF | 10 – 100 tons/hour | 0 – 25 bar 120 – 500°C |
|
|
Steam Boiler Working Principle
The working principle of a steam boiler is simple. In this system, liquid is pumped into the boiler, and fuel is burned in the combustion chamber. The heat generated by the burning fuel boils the liquid inside. Once the water exceeds a certain temperature, it boils and turns into steam. Harmful gases produced by combustion are filtered and discharged.
Types of Steam Boilers
Various steam boiler designs have been developed to meet different industrial processes and needs. Each design has its own advantages and limitations. Below are the six most commonly used types of industrial steam boilers and their characteristics:
- Scotch Type Steam Boiler
The Scotch type steam boiler, also known as an internally fired boiler, is commonly used in ships and industrial facilities with medium steam demands. Typically cylindrical in shape, these boilers contain water around the central combustion chamber and transfer heat through smoke tubes. They are known for their compact design, ease of operation, and maintenance. However, they are not suitable for very high-pressure or high-capacity applications without additional design modifications.
- Rotary Grate Steam Boiler
These boilers are designed for the efficient combustion of solid fuels like coal, biomass, or waste. A rotary grate system at the bottom feeds the fuel, and ash is automatically removed, enabling continuous combustion. They support various fuel qualities but have moving parts, increasing maintenance and initial investment costs.
- Fluidized Bed Steam Boiler
Burns solid fuel in a bed fluidized by high-speed air. Known for being environmentally friendly, the reduced combustion temperature lowers NOx emissions. Adding limestone also reduces sulfur. While allowing various fuels and offering high efficiency and low emissions, their complex design requires skilled operation and a higher initial cost.
- Stoker Type Steam Boiler
The stoker boiler feeds solid fuel into the combustion chamber via a mechanical or semi-automatic stoker system. This ensures a steady, controlled combustion process and improved operational efficiency. It supports various solid fuels and allows automation. However, its combustion efficiency is slightly lower than rotary grate or fluidized bed types, and regular maintenance is necessary due to mechanical components.
- D Type Steam Boiler
Named after its D-shaped exterior, it belongs to the water tube boiler category. Commonly used for high-pressure, high-capacity applications. The D-shaped furnace is surrounded by tube bundles that circulate water and steam, allowing rapid heating and high-pressure steam production. Efficient and responsive, but complex and costly, requiring skilled personnel for operation.
- Moving Grate Steam Boiler
Operates by pushing fuel into the combustion chamber via hydraulic or mechanical pistons. The process optimizes airflow and fuel feed speed for efficient combustion. It supports various solid fuel types but requires higher maintenance due to moving parts. However, it is favored for its combustion efficiency and ease of ash removal.
Capacity
Steam boiler hourly capacities range from 1,000 kg to 100 tons. Detailed information is in the table below:
| Boiler Type | Capacity Tons/Hour |
| Scotch | 1 – 40 |
| Stoker | 1 – 10 |
| D Type | 4 – 40 |
| Fluidized Bed | 6 – 100 |
| Rotary Grate | 4 – 40 |
In Which Sectors Are They Used?
Steam boilers provide efficient heating and operate with various fuel types. Water is easily heated to the desired temperature, and the eco-friendly steam produced is distributed via pipes. Visit our What is a Steam Boiler? page to learn more. Key sectors using steam:
- Textile Industry: Used in yarn and fabric production, dyeing, finishing, drying, and ironing. Steam ensures fast and even heat distribution, enhancing product quality.
- Food and Beverage Industry: Used in sterilization, pasteurization, boiling, cooking, drying, and packaging. Essential in dairy, canned goods, beverages, and confectionery.
- Chemical and Petrochemical Industry: Used for heating, distillation, rectification, and condensation. Boilers ensure safe, controlled reactions at different pressures and temperatures.
- Energy and Power Generation: In thermal power plants and cogeneration facilities, steam runs turbines to produce electricity and supply hot water or heating.
- Pharmaceutical and Biotechnology: Requires high-quality steam for sterilization, distillation, and laboratory processes. Purity and controllability are crucial.
- Pulp and Paper Industry: Steam is used to prepare pulp, dry, and shape paper, ensuring continuous production with uniform heating.
- Automotive and Metal Processing: Steam is vital in parts washing, paint booths, pressing, and metal surface treatments, offering consistent heat and aiding cleaning.
- HVAC Applications: Steam systems heat large buildings and industrial complexes. Widely used in old-style central heating projects with multiple building networks.
- Hospitality, Healthcare, and Institutional Buildings: Used for laundry equipment, hot water, and climate control. Ideal for facilities requiring rapid access to large amounts of hot water.
Each sector has different requirements for steam volume, pressure, temperature, and quality. Selecting the right boiler type is critical for improving efficiency and reducing energy costs. Among boiler manufacturers, Hisarmak offers customized industrial boiler systems tailored to sector-specific needs, ensuring reliable and efficient steam supply.
Steam Boiler Manufacturing
In modern industry, energy efficiency and reliability are prioritized. Industrial steam boilers meet the demands of many sectors, from power generation to food processing.
Maintenance and Efficient Operation
- Water Quality and Chemical Treatment: Water softening, chemical dosing, and regular analysis are essential to prevent scaling and corrosion.
- Fuel Quality: In solid fuel boilers, moisture, ash content, and granule size directly affect combustion efficiency.
- Periodic Maintenance and Inspection: Cleaning tubes, inspecting the combustion chamber, checking fans and feedwater pumps, and testing safety valves and pressure reducers reduce malfunction risks.
- Automation and Control Systems: Modern PLC or DCS-based systems monitor pressure, temperature, and fuel feed in real time for efficient and safe operation.
- Waste Heat Recovery: Economizers and condensate return systems reuse heat from flue gases or processes, lowering fuel consumption and operating costs.
Customized Solutions for Specific Needs
Manufacturers offer tailor-made steam boilers to meet the specific needs of each industry. With various capacities and features, these boilers are designed to fit the unique requirements of industrial facilities.
Table of Contents