Heating

Pyrolysis long burning boilers: pluses and minuses, the principle of action

Pyrolysis boilers long burning

Despite the emergence of new methods of heating,residents and Western Europe, the United States and the CIS, especially those who can not, for whatever reasons, natural gas, continue to heat homes affordable fuel - coal, peat or wood. True to replace old stoves came boilers and conventional boilers Pyrolysis - modern and efficient, equipped with automatic control systems. They work on the available solid fuel which is burned with almost no residue, provide high capacity and efficiency and can operate up to 24 hours in one or two batches, ensure minimum heat loss.

Content

  • The principle of operation, the device pyrolysis boiler
    • Fuel for boiler pyrolysis
    • Features start and run
  • How to choose the Jetstream furnace
  • The list of advantages and disadvantages

The principle of operation, the device pyrolysis boiler

Gas-generating boilers Pyrolysis longburning - it's home laboratory, producing gas from wood, which is later used for heating. Pyrolysis of a physical-chemical exothermic process has long been used in various industries. Its essence lies in the disintegration of complex organic compounds (oil, coal, wood) at high temperatures and the limited access of oxygen to the simple matter - solid, liquid and gaseous.

Thus, the pyrolysis boiler - isDouble chamber heater, in which the upper chamber at a temperature of 200 to 800 ° C an exothermic reaction of the pyrolysis of wood, as a result of which it breaks up into fractions and charcoal pyrolysis gas consisting mainly of CO and minor amounts of CO2. A mixture of pyrolysis gas and air is fed into the lower combustion chamber, burning at a temperature of 1100-1200 ° C, releases very large amounts of heat, which is used for heating.

Pyrolysis gas boiler as the generator: the principle of operation and the device

Stages of pyrolysis boiler

As a result, boilers Pyrolysis solid forgenerate heat energy actually not burn firewood, and gas, providing high efficiency of 85-90%. Combustion gas is known to be easier to control, and this, in turn, allows you to automate the process of management of the heating system.

Structurally pyrolysis furnace boilerIt consists of two separate chambers separated by grates. The top loading gasification chamber at a high temperature and oxygen deficiency and slow smoldering fuel is pyrolyzed. Remove heat from the top of the camera lying on the grate prevents the fuel through a layer which extends from top to bottom a weak flow of primary air.

The device pyrolysis boiler

The device and the scheme of pyrolysis boiler

Eye-catching in the process of generating gassimultaneously with the flow of secondary air enters the bottom of the combustion chamber, the lower part of the nozzle which is heat-resistant ceramics - chamotte. Furnaces of this type of boilers distinguished by high aerodynamic drag, and therefore they use forced draft, realizes that no fan and induced draft fan.

Duration of work gas-generating boilers on a single load depends on the temperature outsideand in the room, the quality of home insulation, type of fuel and its moisture, competent design of the heating system, but their work compared to traditional solid-fuel counterparts much more efficient, ceteris paribus.

Fuel for boiler pyrolysis

In practice, Pyrolysis solid fuel boilerscan effectively operate on any type of solid fuel, whether wood, peat, brown coal and black. Of course, the complete combustion of the duration of each type of fuel is its own and is as follows:

  • soft wood - burning time of no more than 5 hours;
  • solid wood - burning time of about 6 hours;
  • lignite is burned for about 8 hours;
  • Black coal burns up to 10 hours.

It is interesting in this regard the views of users,which eloquently reflect their ratings Pyrolysis boilers are most effective when working on dry wood. It was dry firewood 45-65 cm in length, moisture content not exceeding 20%, not only to provide the maximum power of the boiler, but also prolong its life.

Of course, in the absence of high-quality wood for generating gas in a boiler suit any organic fuels with high volatile fractions, provided that it is allowed by the boiler manufacturer:

  • wood waste;
  • fuel pellets and briquettes;
  • Some types of peat;
  • Paper waste from the food industries;
  • coal.

Important: Regenerative pyrolysis gas burning flame almost white almost no releasing combustion byproducts, provided proper selection of costs of primary and secondary fuel and air humidity not higher than 20-30%.

If the moisture content of fuel is higher than permitted, the processcombustion is accompanied by the release of large amounts of water vapor, which can lead to the formation of soot, tar, lower calorific value of the pyrolysis gas and even the decay of the boiler.

Features start and run

Launching Jetstream furnace solid fuel,should take into account features that distinguish it from conventional boilers for solid fuels. Everyone understands that the work of the unit in a gasifier mode thanks to two cameras, equipped with special valves, regulators - vanes, but not everyone remembers that in contrast to conventional boilers hopper pyrolysis boiler should preheat.

Once in it, depending on the temperaturefuel to reach optimal 500-800 ° C, you can start downloading the solid fuel, and only then bring gate in pyrolysis mode and run the ID fan.

Features start and run the pyrolysis boilers

Pure yellowish-white flame - evidence of the correct setting of the gas generator and the absence of smoke in the mixture of toxic combustion products

In this startup sequence of actionsprovided anoxic slow burning fuel, efficient allocation and combustion pyrolysis gas clean yellowish-white, and a constant comfortable temperature in a heated room during the day.

How to choose the Jetstream furnace

Buy pyrolysis heating boilers, not doubting the effectiveness of their work, can safely by those who have the opportunity to buy dry wood, or even be dry them in case of excess humidity.

If confidence in this is not possible,You can choose a modern high-tech boiler in the furnace which combines high-efficiency 80% of pyrolysis fuel combustion and 20% traditional. Modern combination boilers provide not only quality burning wood and wood waste, peat, coal, or any mixture thereof and 50% humidity.

How to choose the Jetstream furnace

Combined boiler is equipped with a storage chamber of a very large volume and is able to burn 80% less fuel in the pyrolysis mode, and 20% - in the mode of a conventional solid fuel boilers

Ceteris paribus is recommended to chooseBoiler volume loading chamber which can accommodate logs up to 65 cm Moreover, both cameras have to be covered by quality keramobetonom:. it provides the optimum temperature inside the machine, high-quality fuel combustion and protects the wall from burning. Good boiler must ensure that the duration of combustion of the fuel up to 10 hours and serve at least 20 years.

The list of advantages and disadvantages

In conclusion, we present the undeniable "pluses" gas-heating devices and "cons" of which is not yet available Jetstream furnace - the users reviews.

Thus, the advantages:

  1. Easy to maintain, and in the absence of the main gas supply are optimal heating option.
  2. Ease load: once in 10-15 hours, that is, compared to conventional solid fuel boilers 2 times less.
  3. High environmental friendliness: fuel is combusted almost completely, the flue gases contain almost no toxic products of combustion, and during operation of the gasifier SO2v 3 times lower concentration than the corresponding figure conventional solid fuel boiler.
  4. A small amount of ash in the furnace and the inside of the chimney after the completion of easy cleaning and subsequent refilling of the gas generator.
  5. Very high heating rate of the coolant, water or air to a comfortable temperature of 60 ° C.

Disadvantages:

  1. The high cost of gas-generating boilers: 1.5 to "times more expensive than traditional solid counterparts.
  2. All models of pyrolysis heating devices - single-circuit units without heating water for household needs.
  3. Too demanding fuel: do not work for high humidity fuel.
  4. Not able to work in full automatic mode: fuel loading must be carried out manually.

Yet high environmental friendliness, efficiency andprofitability achieved by the complete combustion of fuel and paltry heat loss, fully compensate for the shortcomings of pyrolysis gasification boiler and the range of their fans is steadily growing.

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