Stoker Boiler Guide: Best Stoker Fired Boiler for Sale

Stoker Boiler Guide: Best Stoker Fired Boiler for Sale

A stoker boiler is a type of furnace that uses coal to generate heat. A stoker fired boiler is fueled by coal and wood, as well as other types of fuels like waste oil and biomass. They offer excellent fuel flexibility as well as low emissions due to their complete combustion of all gaseous and liquid products. Because of their high efficiency, these boilers are used for both industrial and commercial applications such as factories or office buildings.



What is a stoker boiler?

Stoker fired boiler

Stoker boilers are a type of boiler that uses a stoker to feed coal into the firebox. A stoker is a mechanical device that feeds coal into the firebox, usually powered by electricity or steam. The stoker can be activated by an electric motor or hydraulic cylinder, either of which is connected to a rotating arm inside the boiler’s firebox.

The mechanism behind how a stoker works are pretty simple: A conveyor belt moves coal from one container to another, where it falls through holes in the conveyor belt into the furnace below. The movement of fuel helps eliminate air pockets and create an even burn for maximum efficiency.


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How does a stoker fired boiler work?

Stoker fired boiler working principle

A stoker-fired boiler works by feeding coal, biomass, or other fuel directly into a stoker unit. A stoker boiler is a type of hot water heating system that burns fuel directly in the combustion chamber and produces flue gases The stoker unit consists of two separate components: the feeder and the firepot. This is where combustion takes place.

The feeder feeds fuel to the firepot, which then ignites it in three separate stages:

  • Stage 1 – A fine spray of oil is injected onto a rotating grate surface inside the firepot using an oil pump system.
  • Stage 2 – So as not to get too hot or overheat, this oil burns rapidly but generates only low temperatures and great volumes of smoke given off from its burning (this is why it’s called “smokeless fuel).
  • Stage 3 – As well as supplying heat for space heating, hot steam can be used for generating electricity if required.


stoker boiler


What are the two types of stoker fired boilers?

Stoker fired boiler type

There are two types of stoker fired boilers: vertical stoker and horizontal stoker. The type you select depends on your specific needs and the available space in your building.

  • Vertical boilers have a cylindrical shape, rather than a boxy design like the horizontal stokers do. Because of this, they can be installed in areas that aren’t as wide or high. They also tend to be smaller than their horizontal counterparts, because they don’t need as much room for the coal chute and ash removal system (which is typically positioned at the bottom of these units).
  • Horizontal stokers’ combustion chambers are located on top of each other so they’re easy to service when needed — just take off one cover and lift out another! This makes them ideal for those who want an efficient unit but don’t want it taking up much space in their facility or home Sany excavator price list.


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What is stoker coal used for?

Stoker boiler function

Stoker coal is used for heating, power generation, industrial processes, and in residential heating.

  • Heating: Stoker coal is used as an energy source in boilers and furnaces. For example, stoker coal can be used to generate steam that powers an electrical generator. The electricity produced from the steam can then be used to power buildings or other equipment.
  • Power Generation: Stoker coal can also be burned alone or in combination with other fuels to produce electricity at a power plant (also known as a generating station). Examples include pulverized coal injection systems (PCI) and fluidized bed combustion systems (FB). In both cases, the burning process uses hot gases from combustion to turn turbines that generate electricity.
  • Industrial Processes: Another way of using stoker coal is through direct-fired thermal treatment equipment called calcination kilns where lime or cement clinker are heated until they reach high temperatures necessary for reaction with water into a slurry that hardens into solid form when cooled down again; this process produces useful products such as limestone flour (for coating walls), cement clinker pellets (for construction projects) etcetera.”


stoker fired boiler


What is the efficiency of a coal stoker boiler?

Stoker boiler efficiency

In fact, some coal stokers can achieve a thermal efficiency of over 85%. A coal stoker boiler is more efficient than fire tube boilers. Stoker fired boilers use less fuel than fire tube boilers and generally have better efficiency ratings. Coal stoker boiler has a higher overall thermal efficiency than any other type of furnace, with the exception of ultra-high temperature gas turbines.

The efficiency of a coal stoker boiler is the amount of energy produced by a boiler compared to the amount of energy used to produce that energy. The efficiency of a stoker-fired boiler depends on several factors:

  • The type of coal used
  • Size and type of boiler


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How much biomass does the stoker boiler use?

Stoker boiler biomass

The amount of stoker boiler biomass used depends on the size of the boiler, as well as the properties of your fuel. For example, a single-fired boiler can go through 20 to 30 tons per day (TPD) while a multiple-fired boiler would use 10 to 20 TPD. If you have an industrial-sized plant with multiple boilers, then you would need to calculate your biomass usage based on this information and the number of kilowatts produced by each boiler.

The amount of biomass that you put in your boiler is important because if you don’t have enough fuel it can cause problems such as:

  • The boiler not heating up enough
  • increased chance of a fire breaking out due to overheating

For example where we had two 120 kW stokers running together – one was operating at 110% efficiency while another ran at 130%. This means that both units were producing approximately 125 kW worth of power; however, only one unit actually needed 100 kg/hr worth of material since only half its capacity was being used whereas both units still consume their full capacity under full load conditions thus requiring 250 kg/hr each hour regardless whether it used 100% capacity or not!


stoker boiler cost


How much does it cost to buy a stoker boiler?

Stoker boiler cost

A stoker boiler can cost anywhere from $2500 to $15,000, depending on its size, quality, and features. The installation of a new stoker boiler is estimated at around $2000. Maintenance costs are between $350-$500 per year and repairs can range from $300 to over $2000 depending upon the problem being inspected or repaired.

The cost of installation is another consideration when buying a stoker boiler. This works out at about $0.5-$1 per watt installed – so for example, if your new heating system needs 200kW of power it would cost around $100-$200 to install. This includes all labor costs involved in installing the unit itself as well as any associated pipework needed to connect it up correctly.


coal stoker boiler for sale



In conclusion, a stoker boiler is a type of boiler that uses coal for heating. It’s a popular choice for industrial purposes as it’s very economical. If you want to know more about the stoker boiler, please contact us: at +0086 186-2391-5479.


contact fangkuai

Looking for boilers with sophisticated manufacturing, and great quality?

Fangkuai boiler can always provide what you want.