Heating boilers on wood waste. The best and most cost-effective boilers for a private house or cottage

Boilers for sawdust, wood chips and wood waste

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Today we want to consider solid fuel boilers for wood chips and sawdust with automatic fuel supply using the example of models Russian production popular trademark Pyrolysis Master. The manufacturer produces 2 series of boilers for wood chips and sawdust - boilers of the BIO series for heating houses with an area of ​​​​100 square meters and industrial boilers of the BIO VULKAN PRO series for heating industries, greenhouse complexes, for the generation of thermal energy in the housing and communal services sector.

Model range tables

So, here are tables of models, main characteristics and prices at which you can buy a boiler model that suits you.

Model	power, kWt	Area, up to m²	price, rub.
	100	1000	662 600
	160	1600	696 200
	200	2000	722 900
	250	2500	865 600
	320	3200	1 083 600
	400	4000	1 143 600
	500	5000	1 219 600
	600	6000	1 488 600
	750	7500	1 595 600
	850	8500	1 780 600
BIO VULKAN PRO-1000	1000	1000	1 990 600

Among the manufacturers of industrial boilers for wood chips and sawdust, it is worth noting the domestic company Pyrolysis Master and its BIO VULKAN PRO 100-1000 kW series.

Industrial boiler for wood chips and sawdust Pyrolysis Master BIO VULKAN PRO

With their help, you can heat domestic, industrial and other premises, prepare heat for technical needs.

The boilers are equipped with a mechanical supply system for wood chips and sawdust into the combustion chamber.

Fuel fraction - 40 mm, humidity - up to 50%.

Maximum temperature hot water is 110 ºC.

If necessary, manually loaded firewood, coal, manually loaded briquettes can be used as fuel, but the power will decrease by 15 - 20%.

Boiler device Pyrolysis Master BIO VULKAN PRO

Among the features of solid fuel boilers BIO VULKAN PRO we note the following:

In the ash pan Pyrolysis Master BIO VULKAN PRO, under the grates, there is a fuel supply chute, a screw conveyor of the boiler is mounted in it, with the help of which, along the “volcano”, between the grates, and a frame made of heat-resistant concrete slabs, reinforced by a supporting structure, mechanized bulk fuel is supplied.

The flame of burning fuel heats the fireclay plates of the furnace, its inner walls and the bottom of the drum, and the resulting hot combustion products pass through the heating pipes of the heat exchanger so that, giving off heat to the circulating water, they cool down and are removed from the boiler through the chimney.

Boilers for sawdust, husks, wood chips, peat, pellets of the BIO series 15-500 kW.

Model	power, kWt	Area, up to m²	price, rub.
BIO-15	15	150	185 000
BIO-20	20	200	190 000
BIO-30	30	300	210 000
BIO-40	40	400	225 000
BIO-50	50	50	265 000
BIO-60	60	600	294 000
BIO-80	80	800	357 000
BIO-100	100	1000	420 000
BIO-120	120	1200	483 000
BIO-160	16	1600	555 000
BIO-200	200	2000	621 000
BIO-250	250	2500	667 000
BIO-320	320	3200	930 000
BIO-400	400	4000	1 380 000
BIO-500	500	500	1 610 000

Pyrolysis master BIO

The basic package of the BIO boiler includes:

• body of a biomass heating boiler;
• base fuel bunker for biomass;
• screw conveyor;
• burner;
• fan;
• automatic control unit.

If desired, the bunker can be enlarged, the boiler can be equipped with automatic burner cleaning, GSM and WiFi modules.

The Pyrolysis Master boilers of the BIO series are distinguished by the presence of a 5-way heat exchanger. As a result, the boilers are characterized by the highest efficiency when compared with boilers that have 2-3 strokes in the convective furnace channels.

Biomass is burned using a horizontal type retort burner. This allows you to burn pellets in any quality, sawdust, wood chips with a fraction of up to 4 cm, oilseed husks, peat.

Automation, electronics and fans are presented by the best European manufacturers.

From the tables above, you can see that this is the richest assortment of boilers for wood chips and sawdust, among all manufacturers on the Russian market. Such a set of power options will allow solving the problem of heating on wood chips and sawdust at any objects and for any area.

Principle of operation

Now consider general device boilers on wood chips and sawdust.

The body of the device consists of the following elements:

• firebox;
• ash pan;
• coil;
• chimney;
• blew;
• heat distributor;
• sensors.

Boiler device Hargassner

In the furnace, on a special grate, the process of burning wood chips and sawdust takes place, thanks to which all the ashes and ash remain in the ash pan. Cleaning of this device should be done about 2 times a month.

Due to the fact that chips and sawdust are woodworking waste and do not form a large flame, the heat exchanger in such boilers is heated by hot gases passing through it.

The heat exchanger consists of tubes that are connected in parallel. It is made of a material that can withstand high temperatures well and does not rust, and it also has such a quality as a high level of thermal conductivity.

sawdust and wood chips - a particularly economical type of fuel if there is a source of fuel nearby: woodworking.

Wood chip boiler Hargassner WTH 150-200

To achieve higher productivity, gas-fired heating boilers on wood chips and sawdust are used, the heating of which occurs not only due to the heat from fuel combustion, but also due to the pyrolysis gas released during the combustion of wood.

In order for the gas to be burned, the boiler furnace consists of two separate chambers. In one, the fuel itself burns, in the other, the gas coming from the first chamber burns.

Boilers for heating, operating on sawdust and wood chips, like other heating appliances, are single-circuit and double-circuit.

The former are designed exclusively for space heating, the latter are also capable of heating water. Such units are in demand among owners of private houses, because. allow not only to provide the house with heat, but also to equip the water supply in the house.

The efficiency of boilers operating on sawdust and wood chips is about 90%.

Fuel supply system

Solid fuel boilers long burning on wood chips and sawdust, operating offline, require virtually no maintenance.

Fuel is supplied through several conveyors:

1. Successor - the bunker has free access outside the building. It has an auger transmission, which is connected to the main storage. After the fuel is loaded into the bunker, the conveyor is turned on, which supplies the fuel to the mechanized storage.
2. There are two types of storage, in a different way supply of wood chips to the boiler. In the first case, an inclined base acts as a bunker, which forms a cone, at the bottom of which there is a screw transmission. The second uses an agitator with blades connected to it. During the rotation of the device, the chips fall into the auger.
3. After storage, wood chips do not enter the boiler immediately. Pyrolysis heating water boilers, operating on sawdust and wood chips, supply fuel in parts. Each new portion of fuel enters the furnace with the help of a special drum, which is connected to a screw transmission that feeds chips to the burner.

System for loading fuel from a fuel storage using a horizontal spring agitator with a lifting screw conveyor for HERZ firematic 20-301 and HERZ BioMatic 220-500 boilers

Advantages and disadvantages

Like any other heating device, solid fuel boilers have their pros and cons. Most of the shortcomings are associated with the type of fuel - wood chips. It has low bulk properties, due to which it is difficult to transport it. Wood chips and sawdust are characteristic high humidity, therefore, they burn worse than wood or.

Wood chip and pellet boiler Termal SF

However, despite a number negative points, stand out and positive sides such devices:

• inexpensive fuel, because waste is used as it;
• thanks to the absolute automation of the operation of solid fuel boilers, they can function even if there are no people in the house;
• all wood fuel is environmentally friendly, so no harm to environment will not;
• high efficiency (90% or more);
• they are economical, on one load of fuel they can heat the room for 10-12 hours;
• heating occurs quickly, 30-40 minutes after ignition;
• The design of such devices is simple, but at the same time reliable.

On the market you can find various options similar boilers from foreign (for example, Termal, Faci, HERZ, Hargassner) and Russian manufacturers(e.g. Zota).

Therefore, it is worth taking a closer look at sawdust and other woodworking waste.

Modern trends require maximum efficiency from industrial wood processing enterprises in any process, but the issue is especially acute with waste processing. Firms that do not have time to adapt to a new format of work risk being left out of the market.

A powerful impetus to the industry was given boiler plants implemented as part of the import substitution program, and having affordable price unlike imported counterparts.

Benefits of recycling wood waste

Waste woodworking (sawdust, lumpy waste slats, wood chips, slabs and wood dust) - in the end, taking into account deep processing, 60-70% of the volume of input raw materials. Therefore, the disposal of by-products of production is so in demand today.

Most industries get out of this situation the old-fashioned way, burning waste in stratified combustion boilers or in "potbelly stoves". In both cases, the process is accompanied by a large amount of soot, soot and other environmentally harmful combustion products.

Others “litter” their production and nearby territories, creating a danger to the environment, forests and people living nearby, including due to the fact that recyclable materials can ignite spontaneously due to exothermic reactions occurring in their depths.

Things are even worse with furniture production, where by-products from the processing of chipboard, MDF and fiberboard must be disposed of in special ovens or "burials", as they contain toxic phenols and formaldehydes.

Ideally for combustion at industrial enterprises, the Gefest gas-generating type boiler water heating plant is suitable.

Features of recycling processes

The process of environmentally friendly waste incineration in boilers includes:

• complete decomposition of phenolic gases harmful to the atmosphere into carbon and hydrogen (flue gases) due to high temperature(>1200 degrees);
• minimum amount of waste in the form of ash.

At the same time, waste and sawdust from sawmills, woodworking, carpentry and furniture industries are burned in the boiler. This is especially true for the furniture industry.

Principle of operation

The operation of the wood waste boiler plant is based on the principle of gas generation. Gasification takes place in a special unit (gas generator) - thermal decomposition of wood into flue gas and hydrogen.

This method of utilization has the following advantages over layered combustion of fuel in conventional boilers:

• high efficiency of boiler plants (up to 90%);
• almost complete smokeless combustion of bulk fuel (ash content does not exceed 1 - 2%);
• the possibility of recycling any by-products of woodworking production, including chipboard, chipboard, MDF;
• installation of spark extinguishing and flue gas cleaning systems is not required;
• ease of control - automatic mode of metered fuel supply;
• durability - the life of the boiler without repair is up to 15 years;
• automatic humidification of dry bulk fuel (relative humidity 35-55%) prevents heating of the gas generator lining, significantly increasing its service life without repair;
• high maintainability of the gas generator;
• the design of the water boiler eliminates the formation of scale inside the heat exchanger pipes, and also allows the use of equipment for water heating and heating;
• characteristics of emissions into the atmosphere during combustion do not exceed the maximum permissible concentrations (MAC).

Advantages of KAMI

The environmental friendliness of the equipment is confirmed by a certificate based on laboratory tests. The data of the obtained analysis indicate that gas-generating boiler plants can be used even in cities, when burning chipboard, chipboard, MDF waste.

KAMI is the exclusive supplier of boiler equipment. On our site you can choose, compare specifications and buy the installation at competitive prices. Before ordering, consult with the company manager - he will help you fill out a request and help with delivery in Moscow and to any region of Russia, as well as advise on all types of machines that are in the company's nomenclature, including drying chambers and other types of industrial equipment.

Waste-fired boilers - a collective non-formalized term that combines boilers, furnaces and waste heat boilers different designs, thermal power, efficiency, purpose and popularity, which ensure the incineration of waste of various origins using the heat obtained during incineration instead of expensive and environmentally unsafe disposal at special landfills. The most commonly used in developed countries waste boilers in the world include:

• waste incineration boilers, furnaces and boilers on the waste of industrial enterprises and boilers / furnaces / boilers on human waste - as a rule, municipal solid waste;
• stoves and boilers for woodworking industry waste - wood-fired boilers, boilers for wood chips and pellets (specially compressed granules of pre-shredded waste from woodworking enterprises);
• boilers on waste products of the oil refining industry (boilers and air heaters on waste oils - motor, industrial, turbine, hydraulic, transmission) and oils of animal / vegetable origin.

The main characteristics of any boiler on waste include:

• coefficient useful action, which ranges from 30-40% for waste incineration boilers to 80-90% for pellet boilers (condensing type) and mining boilers;
• specific cost of obtaining 1 kW/kJ/kcal of heat by burning a unit volume/mass of waste;

Important: The unit cost of obtaining 1 kW / kJ / kcal of heat is determined not only calorific value waste and the efficiency of the waste boiler, but also:

the cost of additional energy used for waste incineration - fuel (gas, fuel oil, waste) used in the ignition and stabilization burners of waste incineration boilers, electricity from compressors / fans that supply primary and secondary air to the combustion chamber, electricity from chamber pushers and electric motors for rotating waste incineration hearths boilers, electric power of screw mechanisms for loading and cleaning grates of pellet boilers, electric power and fuel of systems for multi-stage cleaning of exhaust gases of waste incineration boilers, etc.;

the cost of delivery and preparation for waste incineration;

the cost of cleaning the combustion chamber and smoke channels, as well as the cost of measures for the disposal of slag formed after combustion;

the initial cost of the waste-fired boiler, the amount and frequency of depreciation charges;

the cost of automation and / or the work of maintenance personnel, etc., etc.

the cost of a furnace/boiler unit/boiler on waste and related equipment/structures/devices/measures that provide a full cycle of waste incineration with slag disposal and purification of burnt gases from impurities to MPC established by international and/or current national legislation.

Waste incineration boilers.

Waste incineration boilers, less often waste-fired boilers in Russia are used in waste incineration plants, sometimes in large centralized boiler houses. Typical waste incineration boilers are chamber type, usually with pushers that provide feeding / mixing of waste and cleaning the grate from slag, or are made like rotary hearth furnaces. To ignite and stabilize combustion in waste boilers, gas-oil, oil-fired or waste oil burners are used, more complete combustion is ensured by forced air supply to the combustion chamber (from the loading window, from the bottom and sides), as well as temperature zoning (in rotary kilns / waste boilers) with the provision in zones of a temperature not lower than 1200 degrees Celsius for the afterburning of soot with benz (a) pyrene and dioxins absorbed in it and a temperature of 1500-1600 degrees Celsius, at which the maximum possible complete decomposition / oxidation of dioxins, furans and carcinogenic substances.

As a rule, after the waste furnace/boiler, reactors/scrubbers are integrated into the process chain for cleaning exhaust gases from solid inclusions, organic and inorganic acids, nitrogen dioxide, sulfur compounds, as well as electric filters for the final purification of burnt gases from fine particles of slag and fine ash. inclusions.

The norms formalized back in the USSR determine the possibility of locating waste incinerators on waste no closer than 300 m from residential buildings, and furnaces / boilers / boilers on waste must be equipped with an effective system for cleaning burnt gases to the established maximum concentration limits for NH3, HF, HCl, NOx, SO2, CO2, CO, dioxins and furans, soot, etc.

The main problems of waste incineration boilers in Russia:

the calorific value of Russian municipal solid waste is 900-1300 kcal / kg, while waste in the EU countries, the USA, Canada due to the higher content of packaging combustible materials and lower content food waste(no more than 15-20% compared to 35-40% in Russia) have a calorific value of 2200-2600 kcal/kg. The low calorific value of Russian waste determines the low temperature level in the combustion chamber (at the level of 800-1000 degrees), incomplete combustion of waste, a large number of slags (30-40% of the volume/mass of the load) and high toxicity of exhaust gases, which necessitates the use of entire complexes for post-treatment of gases before they are released into the atmosphere and disposal of slags at landfills specially designated for these purposes;

the absence in Russia of preliminary sorting of waste according to the places of their collection, as is practiced in the EU, the USA and other countries, makes it practically impossible to determine the approximate composition of waste, their calorific value, correction of the combustion process, as well as the presence of ferrous and non-ferrous metals in slags, which it is advisable to separate from the slag before its disposal;

Waste-fired incinerators are large-scale units that are expensive in terms of initial investment and operating costs, and their installation in enterprises, incinerators or boiler houses requires obtaining a large number permits in the relevant authorities;

Woodworking industry waste boilers are currently recognized by the EU as promising heat generators, oriented to use both in local heating systems and boiler heat networks (the thermal power of modern woodworking industry waste boilers varies from 2-3 kW to 200 kW or more). If we abstract from typical solid fuel boilers, inefficient, with manual loading of fuel and cleaning of the combustion chamber, which are still being sold by a number of manufacturers on the market of thermal equipment in Russia, then it should be recognized that over the past 2-3 decades, boilers using waste from the woodworking industry (wood, wood chips, pellets) have passed the next stage of evolution and today they are characterized by comfort in operation and efficiency in burning wood waste.

Rice. Typical solid fuel boilers.

Waste boilers from manufacturers in Germany, Finland, Sweden have an efficiency of 80 to 96% (in condensing boilers), equipped with systems for automatic fuel loading, combustion chamber cleaning, control and management of the combustion process and removal of burnt gases (see videos below) .

Video of the operation of an automated wood-fired boiler Buderus AG, part of the Bosch Thermotechnik division production and commercial groups Bosch Group .

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Video of the operation of the automated pellet boiler Buderus AG.

The main difficulties in arranging heating with wood / pellet boilers in Russia:

calorific value of coniferous firewood 7.5 - 8 MJ / kg, pellet - 6 MJ / kg, waste oils - 34 - 35 MJ / l, diesel fuel - 33.5 - 34 MJ / l, i.e. to obtain one power of thermal energy it is necessary to burn 1 liter of mining / diesel fuel, 5.5 kg of pellets or 5 kg of softwood or hardwood firewood. At the cost of a kilogram of firewood / pellets from 6 rubles, the cost of a liter of mining is 6.5 rubles. and a liter of diesel fuel 29 rubles. in the Moscow region, with equal boiler efficiency, this will determine the cost of 1 kWh of energy3.07 - 3.03 RUB/kWh for boilers diesel fuel, 0.68 - 0.66 RUB/kWh for mining boilers, 2.85 - 2.68 RUB/kWh for wood-fired boilers and 3.39 - 4.05 RUB/kWh for pellet boilers;

the calorific value of wood waste strongly depends on the moisture content of the combusted fuel, and therefore, to store a reserve supply of firewood / pellets, it is necessary to equip a special dry room, preferably with control and correction of relative humidity, and the room should be located in close proximity to the boiler room and have a significant volume, sufficient to ensure the uninterrupted operation of the boiler on waste during the period of operation;

the cost of automated waste-fired boilers - wood and pellets, and even more efficient condensing type is very high, and the failure-free operation of automation is determined both by the quality of the manufactured components and mechanism, and the quality of the supplied electricity;

Typically for Russia, an increase in the number of pellet producers has practically no effect on their consumer value, which has been steadily increasing over the past five years.

Waste oil boilers.

Waste oil boilers are still considered to be one of the most economical heat generators in terms of initial investment and operating costs, and even in Russia the cost of waste oil recovery remains relatively stable, which is due to significant costs for the disposal of waste oil from supplier enterprises and low demand compared to the current supply on the market. The main advantages of air heaters and mining boilers include:

• high calorific value of mining, comparable to the calorific value of diesel fuel;
• ease of automation, control and management of boiler equipment and the heating system as a whole, including remotely via the Internet, networks cellular communication 4G, 3G, EDGE with PC, Netbook, AppleMacBook, Notebook, smartphone, PDA, iPad, iPhone and iPodTouch (see );
• relatively low cost of modern boilers for mining and low operating costs for fuel, maintenance and depreciation of equipment;
• the availability of mining on the fuel market at the current moment and in the future, taking into account the fact that the annual accumulation of used oils in Moscow alone is more than 250 thousand weight tons and this value is constantly increasing.

BiComs Holding is the official distributor of the leading American manufacturer of waste oil heating equipment EconoHeat - OMNI USA, an authorized dealer of EnergyLogic (USA) and offers its compatriots - legal and individuals efficient and economical air heaters and mining boilers. BiComs Holding specialists will help you choose an air heater or a boiler to develop the required power, if necessary, design an efficient heating system, provide full information and advisory assistance during installation and operation, perform warranty and post-warranty (under the contract) maintenance of boiler equipment.

Production Association (PO) "Teploresurs" offers a full range of boiler and auxiliary equipment for the creation of an automated biofuel boiler house (mini CHP) - these are boilers on woodworking waste. Modern boilers with automated fuel supply and mixing provide complete combustion of recyclable materials from sawmills at high humidity with high efficiency (up to 86% compared to 25-50% for conventional coal and wood boilers).

Automatic, dosed supply of sawdust and wood chips leads to the fact that woodworking waste burns evenly, which makes it possible to accurately control the water temperature in the boiler (up to 1 0 C), which is of great importance for wood drying kilns.

Automatic operation with the supply of the optimal amount of fuel and air, which is provided by steam boilers on waste, eliminates the need for constant duty of service workers. Waste-fired boilers of Teploresurs are promptly put into operation and operate in a variety of climatic conditions. During the entire service life of the wood waste boiler house, you will receive comprehensive advice on work from our specialists.

We produce boilers that work on wood processing waste - sawdust, chips, shavings. In order to obtain large thermal capacities, ease of maintenance and increase the stability of operation, waste-fired boilers are most often installed in the boiler room, which are purchased and put into operation in turn, which is more rational and profitable than immediately launching 2-3 boilers.

In which enterprises is it advisable to use a boiler on woodworking waste (wood)?

We offer wood waste hot water boilers with a unit heat output from 300 kW to 10 MW, which work stably both on wood waste (chips, sawdust, bark, shavings with a relative humidity of up to 55%), and on lumpy, milled or briquetted peat. Such autonomous wood waste boilers will be effective in wood processing plants, timber industry enterprises, plywood factories as a complex of drying chambers or a heating system. There are "omnivorous" wood waste boilers that operate on any raw material or specialized on one type of fuel with a higher efficiency. It is advantageous to operate such wood waste boilers, first of all, where large volumes of sawdust and shavings are formed daily, or in boiler houses located in the immediate vicinity of such enterprises that constantly have wood production waste or waste furniture production. The production facilities and the office of PA "Teploresurs" are located in the city of Kovrov, Vladimir Region, and Kovrov boilers for burning wood waste have long earned a good reputation in many regions of the Russian Federation. The modular design that wood waste boilers have and their full factory readiness allows you to quickly transport Kovrov boilers "Teploresurs" throughout Russia by rail and road, which minimizes the delivery and installation of all equipment.

Fuel warehouse "Live bottom", conveyors, boiler room automation

In each individual project, waste-fired boiler houses are equipped with an additional set of equipment necessary for efficient operation: an operational dosing bin, a woodchip and sawdust fuel storage, a screw conveyor, a scraper conveyor, and an automatic control system. Thanks to all this equipment, industrial wood waste boilers operate smoothly in automatic mode.

Depending on the specialization of your production and the prevalence of certain wood waste, our designers will issue the most best option design that your waste boiler room will have. These can be solid fuel hot water boilers for wood waste, operating on large pieces of wood residues with manual loading and equipped with a storage hopper with an automated shaving screw for its combustion in the diluted boiler furnace. Or would it be more expedient to have waste-fired boilers with gas boiler, equipped with a vortex gas generator with portioned delivery of sawdust to the furnace from the storage hopper by the auger.

Design and equipment of mini-CHP on wood waste

The design department of PO "Teploresurs" will help to develop a project for the modernization of an existing mini thermal power plant to equip it with an automatic system for metered supply of biofuel. If your boiler room runs on coal or diesel fuel, then it can be converted to wood chips, sawdust or pellets. Considering everything individual needs and the characteristics of each customer enterprise, our specialists create a project according to which your wood waste boiler house will operate with optimal performance, the appropriate type of fuel used and the necessary automation of fuel supply and combustion processes.

With the growth of gas and electricity tariffs, there is a need to use cheaper types of fuel. These include peat, wood waste, agricultural waste. Many enterprises are created on sites with no communication of thermal networks. There is a problem with the heat necessary for the normal operation of the enterprise. This is solved by building an autonomous boiler house. Waste-fired boilers have been created to generate heat.

Waste boilers solve two important issues. Firstly, they help to get rid of unnecessary waste from woodworking enterprises, straw, oilcake. Secondly, they help to solve the problem with heat for the needs of the enterprise, domestic needs.

Wood waste boiler

Solid fuel boilers are divided into two groups. The first group - boilers that use wood, sawdust, wood chips, firewood up to 1.5 m long, lumpy waste as fuel. The second group - boilers with pyrolysis combustion of wood, the package includes a vortex gas generator. The combustion of wood gas is used, excluding the formation of soot. The wood waste boiler allows you to adjust the power in the range of 30-100%, while the efficiency remains high. Water acts as a coolant, the package includes a fuel accumulator - a bunker, which helps to ensure round-the-clock uninterrupted operation. Fuel loading is needed once a day. The woodworking waste boiler creates the possibility of transferring thermal energy over long distances, to be used for drying in drying chambers. The pyrolysis system allows the use of wood with a moisture content of not more than 20%. The woodworking waste boiler provides for mechanical fuel supply, which guarantees stable combustion of the furnace, and allows you to adjust the heat output. The wood waste boiler maintains the set outlet water temperature. The operation of the boiler is controlled by automation. Modifications of these boilers can be represented by models KVSM-OD and KV-VA.

Wood waste boiler

The waste boiler is completely safe to operate, the kit includes a protection system that meets regulatory requirements fire and technical safety; represents a practically ready-to-use design. The waste boiler solves the problem with fuel in an original way, using different kinds woodworking and sawmill waste. They are characterized by reliability, simplicity and ease of maintenance.