Wood and Coal Gasification Boilers

- Wood and Coal Gasification Boilers
Wood and Coal Gasification Boilers
The boilers are constructed for burning wood and coal on the principle of generator gasifying with the use of a gas exhaust ventilator, which withdraws the combustion gases from the boiler.
The boiler body is produced as a weldment of 3-8 mm steel sheets. The boiler consists of two chambers, one placed upon the other. The upper chamber makes up the fuel container, and the lower one, combustion chamber and ash collector. Between the two chambers, a new, rotating, patent protected grate is placed. The grate ensures perfect combustion of coal, wood, or a combination thereof, as well as simple cleaning.
Advantages of Wood and Coal Gasification Boilers
- Burning coal and wood separately, we recommend together
- Revolving furnace grate - easy for ash removal
- Fan controlled - pressure(S)
- Simple handling and cleaning
- Large fuel container
- Revolving furnace grate - easy for ash removal
- The boiler contains no tubing - simpler cleaning (Except C50S)
- The secondary air is pre-heated to high temperatures
- Small size and low weight
- High quality
The exhaust fan when compared with a pressure fan exhausts combustion products and minimises smoke during stoking and boiler operation. .
The settings of the grate segments is displayed on the picture, and the same for use of coal or wood.
The secondary air supply channel and the flat part of gasifying grate must always point downwards.
PATENTS PROTECTED!
Installation
ATMOS boilers must be connected via the LADDOMAT 21 or ESBE thermoregulation valve to achieve and keeping the minimum temperature of water returning to boiler at 65°C. The temperature of water exiting the boiler must be permanently kept between 80 - 90°C. The default configuration of all boilers includes a cooling circuit to prevent overheating. We recommend installing boilers with accumulation tanks.
Boiler regulation
Electrical - mechanical - Power is controlled with a safety valve operated with the draught regulator, FR 124 type, which automatically opens or closes the safety valve according to a set output temperature of water (80 - 90°C). When setting the power regulator, much attention should be paid because the regulator has another important function other than power regulation - it also secures the boiler against overheating. A controlling thermostat located on the boiler panel regulates the fan according to a set temperature (75 - 85°C). A temperature lower by 5°C should be set on the controlling thermostat rather than on the FR 124 draught regulator. Boiler use: C 18S, C 20S, C 30S, C 40S, C 50S.
Each boiler can be fitted with ATMOS ACD 01 equithermal controller. It takes a control of the heating system based on datas collected from external sensors and on time. It can control suction fan of the boiler as well.

LEGEND OF THE BOILER DIAGRAM - C 18S, C 20S, C 30S, C 40S, C 50S
| 1. | Boiler drum | 14. | Fireproof and heat-resisting fitting - GS - rear face of round space |
|---|---|---|---|
| 2. | Filling door | 15. | Cleaning cover |
| 3. | Ash pan door | 16. | Furnace grate level |
| 4. | Ventilator - pressure (S) | 17. | Firing safety valve pull rod |
| 5. | Fireproof and heat-resisting fitting - rear block | 18. | Thermometer |
| 6. | Control panel | 19. | Furnace curtain - front |
| 7. | Safety thermostat | 20. | Switch |
| 8. | Regulating safety valve | 22. | Power regulator - Honeywell FR124 |
| 9. | Grate bar | 23. | Fireproof and heat-resisting fitting - front block |
| 10. | Fireproof and heat-resisting fitting - round space L + P | 24. | Ventilator thermostat |
| 11. | Furnace grate tube | 25. | Door panel - Sibral |
| 12. | Fireproof and heat-resisting fitting - half-moon | 26. | Door insulating cord - cord 18x18 |
| 13. | Firing safety valve | 27. | Waste gas thermostat |
| 28. | Cooling loop to prevent overheating |
| C 18S | C 20S | C 30S | C 40S | C 50S | |
|---|---|---|---|---|---|
| A | 1180 | 1420 | 1420 | 1420 | 1420 |
| B | 770 | 770 | 870 | 970 | 1120 |
| C | 590 | 590 | 590 | 590 | 590 |
| D | 872 | 1118 | 1118 | 1118 | 1118 |
| E | 150 | 150 | 150 | 150 | 150 |
| F | 65 | 70 | 70 | 70 | 70 |
| G | 200 | 200 | 200 | 200 | 102 |
| H | 930 | 1177 | 1177 | 1177 | 1177 |
| CH | 220 | 220 | 220 | 220 | 220 |
| I | 190 | 190 | 190 | 190 | 220 |
| J | 6/4" | 6/4" | 6/4" | 2" | 2" |
| TECHNICAL DATA BOILER TYPE Kombi |
C 18S | C 20S | C 30S | C 40S | C 50S | |
|---|---|---|---|---|---|---|
| Operating interval (kW) | 14 - 20 | 17 - 25 | 22 - 32 | 28 - 40 | 35 - 48 | |
| Req. chimney Exhausted (Pa) | 22 | 25 | 25 | 28 | 28 | |
| Boiler weight (kg) | 298 | 344 | 394 | 430 | 504 | |
| Water volume (l) | 45 | 64 | 64 | 77 | 95 | |
| Fuel container volume (dm3) | 66 | 100 | 125 | 150 | 150 | |
| El. power consumption (W) | 50 | 50 | 50 | 50 | 50 | |
| Operating voltage (V/Hz) | 230/50 | |||||
| Required fuel | Brown coal of walnut size with specific energy 17-20 MJ/kg Dry wood with specific energy 15-18 MJ/kg, diameter 70-90 mm, 12 - 20% moisture level |
|||||
| Max. length of wood (mm) | 330 | 330 | 430 | 530 | 530 | |
| Min. operating temperature of return water | 65 °C | |||||
| Efficiency within the power output interval | 81 - 85% | 81 - 84% | 81 - 84% | 86 - 87% | 86 - 87% | |
| Boiler class | 3 | |||||
Black coal boilers ATMOS AC25S

- Black coal boilers ATMOS AC25S
The boilers are constructed to burn NUT 1 black coal and wood. On a base of gasification process with a suction fan (S) to suck waste gasses into the chimney.
The boiler body is produced as a weldment of 3-8 mm steel sheets. The boiler consists of two chambers, one placed upon the other. The upper chamber makes up the fuel container, and the lower one, combustion chamber and ash collector. Between the two chambers, a new, rotating, patent protected grate is placed. The grate ensures perfect combustion of coal, wood, or a combination thereof, as well as simple cleaning. The primary and secondary air are pre-heated to a very high temperature for achieveing high efficiency and good quality burning.
The recommneded fuel is NUT 1 black coal. As domestic fuel, logs of wood (length 330mm), brown and black coal of a larger size (NUB), or brown-coal and wooden briquettes can be used.
Advantages of Black coal boilers ATMOS AC25Sf
- Burning coal and wood separately, we recommend together
- Large fuel container
- Simple handling and cleaning
- Coolining loop protecting the boiler against overheating
- Revolving furnace grate - easy for ash removal
- The boiler contains no tubing - simple cleaning
- The secondary air is pre-heated to high temperatures
- Small size and low weight
- Fan controlled - pressure(S)
- Automatic switching off the boiler after burning down
Boiler Regulation
Electrical - mechanical - Power is controlled with a safety valve operated with the draught regulator, FR 124 type, which automatically opens or closes the safety valve according to a set output temperature of water (80 - 90°C). When setting the power regulator, much attention should be paid because the regulator has another important function other than power regulation - it also secures the boiler against overheating. A controlling thermostat located on the boiler panel regulates the fan according to a set temperature (80 - 85°C). A temperature lower by 5°C should be set on the controlling thermostat rather than on the FR 124 draught regulator. Boilers contain waste gas thermostat which serves to stop the suction fan when the boiler burns down. The boilers work for 70% without the fan on.
Each boiler can be fitted with ATMOS ACD 01 equithermal controller. It takes a control of the heating system based on datas collected from external sensors and on time. It can control suction fan of the boiler as well.

Legend – AC25S
| Dimensions | AC25S | AC35S | AC45S |
|---|---|---|---|
| A | 1180 | 1420 |
1420 |
| B | 770 | 770 |
870 |
| C | 590 | 590 | 590 |
| D | 872 | 1118 | 1118 |
| E | 152 | 152 | 152 |
| F | 65 | 70 | 70 |
| G | 200 | 200 | 200 |
| H | 930 | 1177 | 1177 |
| CH | 220 | 220 | 220 |
| I | 190 | 190 | 190 |
| J | 6/4" | 6/4" | 6/4" |
| TECHNICAL SPECIFICATIONS ATMOS KOMBI TYPE |
AC25S | AC35S | AC45S | |
|---|---|---|---|---|
| Energy output (black coal) | kW | 20-26 | 25 - 35 | 35 - 45 |
| Energy output (wood) | kW | 15-20 | 20-25 | 25-32 |
| Weight of boiler | kg | 235 | 298 | 394 |
| Volume of water in boiler | l | 45 | 64 | 70 |
| Dumping hopper capacity | dm3 | 66 | 100 | 125 |
| Electrical input | W | 50 | 50 | 50 |
| Electric network | V/Hz | 230/50 | 230/50 | 230/50 |
| Specified fuel | Lignite briquettes with heating capacity 19-23MJ.kg-1 | Black coal briquettes with heating capacity 17-30MJ.kg-1 | ||
| Domestic fuel | Dry wood ø 50-120 mm, moisture 12-20% | Dry wood ø 50-120 mm, moisture 12-20% | ||
| Max. length of wood | mm | 330 | 330 | 430 |
| Min. temperature of returned water | °C | 65 | 65 | 65 |
| Efficiency | % | 84 | 85< | 85,2 |
| Quality of combustion - CO | mg/m3 | <500 | <500 | <500 |
| Boiler class | - | 3 | 3 | 3 |


