BLAGO - Model T2T-VN - Two Bunker Pyrolysis Heat Generator
From Auxiliary Equipment
Company Greenpower has been dealing with the development and production of thermotechnical equipment more than 10 years. The company products became widespread in the CIS countries and beyond its borders as well. At our production facilities we started production of absolutely new solid-fueled pyrolysis heat generator - BLAGOtm adapted for our consumers and designed for our weather conditions, it can confidently compete with foreign analogs and even surpasses them.
In our pyrolysis heat generators one can burn:
In our pyrolysis heat generators one can burn:
- Wood, sawdust, wood chips;
- fuel briquettes, pellets;
- charcoal mixed with sawdust;
- tires and polymers;
- all possible combustible waste.
Heat generators are used to generate heat energy in the form of hot water up to , hot air up to 250 oC, they can be applied for the heating and for technologic purposes as well (dryers, greenhouses etc.).
Major advantages of two-bunker pyrolysis heat generators
- Large loading chamber and doorway of the chamber.
- Bunker loading is sufficient up to 12 hours.
- Can run on bulk solids (sawdust, wood chips, pellets, husks etc.).
- Work due to natural-draught and smoke exhauster as well.
- Full automatic operation and effective embedded system of protection.
- No manual control and gate valve of straight draught.
- Easy in cleaning.
- Plate-gas-tube heat exchanger.
- Air heating before feeding to the furnace and afterburning chamber.
- Made from high-quality materials.
- High coefficient of efficiency.
- Price-quality-characteristics ratio.
- Smokless fuel charging.
- Run on different types of fuel.
- Mobile variant is possible (for simplification of permission documentation).
Combination of lighting-up valve with charging door improves fire safety of the boiler; protects from emissions of pyrolysis gases in the premises and from their inflammation.
Heat generator design description
Two-bunker pyrolysis heat generator BLAGO consists of heat generator 1 and external heat exchanger 2. Heat exchanger is installed on the heat generator 1 made from two fuel charging hoppers 3, fire chamber 4 and afterburning chamber 5. Carbonization of fuel with volatile yield containing combustible gases takes place in the charging hoppers. Combustible gases are burnt up in the afterburning chamber 5. Afterburning chamber 5, fire chamber 4 and charring hoppers 3 are lined with refractory material. There are fuel-charging doors 6 and 7 in the fire chamber 4 and in the charging hoppers 3. There is an ash box 8 used to unload ash.
Air for fuel combustion in the fire chamber 4 is inhausted by the blower 9 through the rotary valve 10 which is connected to the draught thermo-controller 11 with a chain. There is a resistance temperature detector (temperature sensor) to control operation of smoke exhauster.
Smoke-exhauster works in a start-stop mode. All signals are sent to the controller.
Air for fuel combustion is delivered to the fire chamber 4 from the sides, under the charging hopper, and for flue gases combustion – to the afterburning chamber through the air collector 12. Control over air supply to the air collector 12 is carried out by means of air flow regulator 13.
Heat generator operation description
Heat generator operation description
The process of heat generator startup:
- At the beginning one of the charging hoppers 3 is loaded.
- Fuel is ignited through the door 6 of the fire chamber 4.
- In a definite period of time (2-3 hours) fuel is charged in the next charging hopper 3. At the same time smoke exhauster must be turned on in order to exhaust all flue gases out of the charging hopper 3, and rotary air valve 10 to supply primary air is completely closed.
Charging hoppers 3 are charged with fuel by turns in order to avoid overlap of the process of intensive fuel gasification in the hoppers and rapid rise of coolant temperature as a result.
In the period of intensive fuel gasification in one of the hoppers, the regulation of air flow supplied to the air collectors 12 by means of air flow regulators 14 takes place. Regulation is performed as for the flame color. Flame must be of straw color. After the regulations air flow regulators 13 stay in the selected position.
Upon the expiry of fuel burning in the hopper 3 the next portion of fuel is to be loaded. Fuel is to be loaded by turns as well. It is possible to determine the end of fuel burning process in any of the hoppers:
- By the readings of thermocouples
- Having opened the door 6 of the fire chamber 4 and determined slowdown of the burning process in the right or left half of the fire chamber.
It is not recommended to open the doors 7 of the charging hoppers 3 in the period of intensive fuel gasification for additional charging. Fuel is to be loaded at the end of the fuel burning process and when the rotary air valve is completely closed.
In the process of burning, moisture is also emitted out of the fuel. It accumulates at the top of the charging hoppers 3 and prevents fuel carbonization and emitting of pyrolysis gases along the full volume. Fuel is carbonized layer-by-layer as well as emission of pyrolysis gases.
It is not recommended to burn firewood of 8% humidity. It’s advisable to put the firewood, sawdust and wood chips of 30-55% humidity. Overheated steam accumulated at the top of hoppers passing a layer of charcoal generates water-combustible gas which burns in the after-burning chamber 5. At the same time rising radiant energy compensates for that heat energy consumption which was used for the endothermic process.
Pyrolysis heat generator 'BLAGO-Т2Т” can work in the forced mode which is usually used in the period of intense cold. In order to switch to the “forced mode” ash box 8 is to be pulled out and primary air is supplied not only under the charging hoppers 3 but also under the fire grate. Fuel starts to burn more intensively.
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