Charcoal kiln EKKO

For charcoal production (carbonization), GreenPower has developed the EKKO series of kilns. Their task is low-temperature pyrolysis of plant-based materials containing carbon. In addition to charcoal production, excess heat is generated during the process. This can be used for preliminary drying of raw materials, or other processes.


Charcoal kiln EKKO-2

Charcoal is widely used in various fields of activity, from industry to social. It is used in the chemical and metallurgical industries, in agriculture, in construction and in everyday life - as fuel for fireplaces, barbecues, on camping trips and so on. Therefore, environmentally friendly production of high-quality charcoal of high quality is extremely important in many ways.

Thanks to the introduction of the latest technologies, a wide range of materials can be carbonized:

  • firewood, lump wood materials, logging waste;
  • various fuel briquettes (Pini-Kay, Ruff, Nestro, Nielsen);
  • solid inedible fruit waste - the pits of fruit trees, grapes, olive, etc .;
  • waste agricultural production residues - grain husk, corn stover, straw, etc.
  • various nutshells (coconut, hazelnuts, walnuts, cashews, cones, etc.)

Specialists in the international company GreenPower, which has been dealing with carbonization for twenty years, have created a pyrolysis unit taking into account all the requirements of our customers:

  1. Our kiln chambers are made using special insulation materials that withstand ultra-high temperatures. Created according to modern developments, they allow you to do without the traditional "thermal ballast" - refractory bricks or heavy metal - which significantly reduces the process cycle time and can significantly increase efficiency.
  2. The unique design provides reliability and maintainability of the equipment. The kiln is designed to work reliably for more than five years. If necessary, any part and element can be easily and quickly repaired: competent and thoughtful design of the kiln has made maintenance easy.
  3. The automated control system provides all the necessary instrumentation and sensors, the maximum degree of automation and external control of maintenance personnel. At the same time, it is possible to control not just one, but a complex of furnaces, including ONLINE control.
  4. Logistics and mechanization. With the EKKO series, the production site can be fully mechanized, taking into account competent logistics: it receives, loads, cools, unloads, packs and stores material equipment in accordance with the EKKO logistics program, which greatly facilitates the work of users. Competent logistics is halfway to success.

Other advantages of the EKKO furnace:

  • high quality at a low price
  • compactness and light weight - less than 5 tons;
  • profitability - additional fuel is not required, only at first ignition;
  • low energy consumption - less than 0.1 kW;
  • environmental safety - no emissions, minimum fine material dropout (not more than 1%);
  • fast (40 minutes) firebox output to operating mode;
  • resistance to thermal shock;
  • quick installation, delivery almost complete;
  • the possibility to transport two kilns EKKO-2 in one shipment;
  • Charcoal keeps its shape;
  • high performance;

As you can see, the EKKO ecological carbonization furnace embodies the optimal combination of price and quality.

Raw materials

The technology allows to use various raw materials for pyrolysis:

  • Wood (firewood, lump wood waste of logging and woodworking industries)
  • Fuel briquettes (Pini-Kay, ruff, nestro, Nielsen)
  • Fruit pips (olive pits, grape seeds, etc.)
  • Agricultural waste (straw, reed, etc.)
  • Various nutshells (coconut, hazelnut, walnut, cashew, etc.)

Technical description

​Dimensions of the kiln ЕККО-2

Charcoal kiln EKKO-2 is designed

Dimensions of the kiln ЕККО-4


Description of the kiln:

The design consists of two or four chambers that are connected to the servicing elements:

  • firebox;
  • afterburner;
  • chimney.

To load raw materials and unload the finished product, 4 or 8 trolleys are provided (as standard, depending on the model). We provide a platform for their movement, an overpass and an electric winch. Each chamber is equipped with a special loading / unloading hatch, which has the necessary volume to accommodate the trolley. The chambers can operate in “DRYING” and “PYROLYSIS” modes. The productivity of the kiln primarily depends on the degree of preparation of the raw materials for the process: humidity and size of the raw materials. In order to divert the steam (during drying) and the evolved gas (during pyrolysis) into a special combustion chamber, gas and vapor channels are provided. In the firebox and afterburner the pyrolysis gas is completely burned, either for process energy or for recoverable heat. This ensures absolute environmental safety of all stages of the process. An automatic control system (ACS) mechanizes and controls all actions, and the control system records all parameters of the EKKO kiln operation. The ACS keeps logs of “temperatures and events”, personnel inputs, etc. This allows you to comprehensively analyze and monitor the operation of equipment.

CONTROL PANEL with “Touchscreen”

The main elements of the kiln:

  1. Firebox.
  2. Afterburner.
  3. Connecting flue with gate (firebox – afterburner).
  4. Exhaust pipe.
  5. Drying / pyrolysis chambers A & B with loading hatches.
  6. Control chamber
  7. Damper chambers A and B.
  8. Collector gas chambers A / B.
  9. Gate valves gas chambers A / B (butterfly valves).
  10. Gate valves steam chambers A / B.
  11. The thermal channel from the control chamber to A / B chamberd, and the gas extraction channels
  12. Trolley rails and supports.
  13. Control panel and instrumentation.
  14. Heating pipes of A / B chamber.

Site Logistics


  1. Trolley.
  2. Mobile platform.
  3. Stationary overpass.
  4. The cross over platform.
  5. Rails for the mobile platform.
  6. Winch.
  7. Tipper trolley.

There are two types of trolleys for mechanizing the processes of loading / unloading raw materials / coal – with end or top loading / unloading of raw materials / coal. For the convenience of loading raw materials, and for cooling and stabilizing charcoal in a trolley with its subsequent unloading, stationary platforms are used. It is also possible to use a conveyor for loading raw materials into trolleys and a tipper for unloading coal from them. In this case, the trolley with top loading of raw materials will be the most suitable option.

Furnace performance

The main factor affecting the productivity of the kiln is the moisture content of the raw material. To optimally prepare the raw material and achieve maximum efficiency, it is desirable to equip the kiln with additional equipment for preliminary drying. It can be the following units:

  • chamber drying of periodic action;
  • continuous tunnel drying;
  • continuous shaft drying.

You can also dry the raw materials in the trolley of the kiln, but the efficiency is much lower.

The recommended degree of drying is more than 30% of absolute humidity. A more efficient drying process brings double benefits:

  • economic – significantly reducing the duration of pyrolysis;
  • consumer and commercial – increasing the quality and yield of the final product.

Read more about dryers manufactured by GreenPower.

The productivity of the EKKO-2 and EKKO-4 furnaces, depending on the parameters of the raw material, tons / month of charcoal:

Name and indicators of raw materials

EKKO-2, t / month

EKKO-4, t / month
 Freshly sawn wood, abs. humidity 55% 15-20* 30-40*
 Pre-dried wood, humidity up to 25% 25-35* 50-70*
Pre-dried wood, humidity up to 15% 30-45* 60-90*
 Fuel briquettes, humidity 10% 40-50* 80-100*

*Productivity depends on the density and size of the feedstock.

The highest efficiency of preparing biomass for carbonization is possible only in special equipment using thermal energy obtained during pyrolysis.

The transportation of a standard set of EKKO-2 charcoal kiln is carried out in trucks (truck, TIR) with 40′ tilt trailers. The volume of the trailer must be not less than 86 cubic meters. It is also possible to transport two sets in such a vehicle, but only if the trolleys and other accessories are disassembled. . Equipment can be loaded into shipping containers (V 20 feet – 1 set, 40 feet – 2).

Main parameters of furnaces

Name of indicator

Units rev.



Maintenance staff for 1-3 ovens




 Потребление электроэнергии, не более




Consumption of firewood for the furnace, after exiting “to mode”, no more*




Duty Cycle*








Warranty service




* The value of the parameters depends on factors influencing performance

The following indicators affect the efficiency of a charcoal annealing furnace:

  1. Humidity of raw materials. Increased humidity significantly reduces efficiency and increases the volume of firewood or other fuel for the firebox. So, when using hardwood just harvested during the movement of sap, the productivity can be reduced by up to 50%.
  2. The density of the material. For example, poplar having a minimum density requires less energy than a hornbeam or iron tree with a maximum density.
  3. Sizes of pieces of wood or other raw materials.

Why do customers choose us?

  • No emissions during operation
  • Compactness and mobility of equipment
  • High performance (up to 60 tons of charcoal per month)
  • Full mechanization and automation of the operational process
  • The use of modern materials - reliable design
  • The number of screenings does not exceed 1%
  • Quality and guarantees - confirmed by
    18 years of experience on the market
  • Mobile equipment

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