Solid fuel pyrolysis boiler
The pyrolysis boiler is a newer type of solid fuel boilers.
The principle of operation underlying the operation of a pyrolysis boiler is fundamentally different from the principle of operation of a classic solid fuel boiler. The diagram below shows the main structural elements of the pyrolysis boiler, as well as the principle of pyrolysis combustion and heating of the coolant:
Pyrolysis boiler diagram
1 — Fuel,
2 — Primary air,
3 — Secondary air,
4 — Exhaust gases,
5 — Coolant inlet,
6 — Coolant output,
A — Gasification chamber,
B — Grate,
C — Afterburning chamber,
D — Flue gas,
E — The smoke pump
The appearance of a pyrolysis boiler with a capacity of 25-80 kW
As can be seen from the above diagram, the pyrolysis boiler separates the combustion phases:
1
2
The advantage of pyrolysis boilers is a high efficiency coefficient for this type of boiler, reaching 85%, practically no ash and soot, the ability to adjust power in the range of 100%-30% of the rated power. However, the cost of pyrolysis boilers significantly exceeds the cost of simple classical solid fuel analogues.
The installation of a solid fuel pyrolysis boiler will require careful compliance with all requirements, including the height and internal section of the chimney. The parameters of the chimney will depend on the type and power of the boiler. They are finally determined according to the maintenance manual for a particular boiler.
An important circumstance is the possibility of further gas connection. The boiler can be either with one circuit or with several, you can also use a single-circuit boiler with a boiler connection. Solid fuel boilers can be made of steel and cast iron according to the furnace design, which should also be taken into account before installation – the material varies in weight. Boilers can be installed either on a screed – rigid base, or directly on the foundation.
The installation of a solid fuel pyrolysis boiler must be carried out in compliance with safety requirements. A mandatory requirement is the ventilation and chimney equipment in the room where the boiler is installed. Within one hour, the air exchange must take place three times, without taking into account the air that will be required for gorenje.The storage of flammable, flammable and explosive substances is prohibited in this room.The installation of a solid fuel pyrolysis boiler should be carried out by placing the boiler on a refractory base – a metal sheet up to 0.6 mm thick or asbestos cardboard at least half a centimeter thick. In front of the boiler itself, a metal sheet with a size of at least 0.5 x 0.7 meters is attached to the floor. The boiler must be installed at a distance of at least half a meter from the combustible structures. The passage between the front side of the boiler and the opposite wall should not be less than one meter for normal maintenance of the unit. The gaps in the connection of the chimney and chimney after connection must be filled with clay mortar or any other heat-resistant sealant in order to avoid a fire hazard or unsatisfactory operation of the boiler equipment. When installing, it is advisable to use linen thread impregnated with zinc whitewash on drying oil or lead meerkat as a sealing material for threaded connections, as well as FUM tape. At the same time, other methods of sealing threaded connections are acceptable, which can guarantee the tightness of the connection.
Installation of a solid fuel pyrolysis boiler should be carried out only by a specialist!
It is forbidden to use water from the heating system for household needs in order to avoid failure of the boiler, heating system and automatic safety systems (the sleeve of the water temperature regulator may be subject to corrosion).
Boiling of water in the heating boiler and heating system is prohibited, the water temperature at the outlet of the boiler should not exceed 90 degrees. If a knock is heard in the system – due to the formation of steam, hydraulic shocks have begun – the heat from the furnace must be removed.
The boiler chamber can be cleaned only after it has completely cooled down.
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