Heating boilers
Survey
Cooperation
SPÄNEX works together with the company Nolting Holzfeuerungstechnik GmbH, Aquafinstraße 15, 32760 Detmold, Germany, and distributes the boiler plants produced by Nolting.
SPÄNEX offers complete solutions including the thermal usage of the exhausted wood residues in the form of chips and dust.
Broad program
- Type series LCS
| Types | Firing system | Combustibles | Capacity range in kW |
|---|---|---|---|
| RU | underfeed stoker | water content ≤ 30 %, low ash content | 65 - 450 |
| RV | pusher grate | Wassergehalt ≤ 50%, rich in ash | 65 - 450 |
- Type series NRF
| Types | Firing system | Combustibles | Capacity range in kW |
|---|---|---|---|
| automatic | underfeed stoker | water content ≤ 30 %, low ash content | 290 - 835 |
The boiler program is completed by all variants of feeding systems:
- silo discharging units:
- slant screw,
- horizontal screw,
- containers with discharging units,
- Spush floor discharging,
- conveying systems:
- pneumatic,
- screws,
- hutch chains,
- conveyor belts.
The production and supply program of Messrs. Nolting GmbH contains further boiler type series with a capacity range up to 2300 kW.
Feeding systems
Program
The dosed feeding, this means according to the requirement, of the firing plant with combusti-bles is the fundamental presupposition for a reliable and automatic operation of the boiler plant. Depending upon the customer-side conditions, the boiler size, etc., different systems are avail-able:
1. Silo discharging units
| 1.1 slant screws | |
|---|---|
| field of application: | |
| - material: | chips, dust, chopped wood G20 |
| - silo dimensions: | Ø: bis 7 m filling height: bis 15 m |
| 1.2 Horizontal screws | |
|---|---|
| field of application: | |
| - material: | chips, dust, chpped wood G30 |
| - silo dimensions: | Ø: bis 9 m filling height: up to 20 m |
2. Room discharging
| 2.1 hinged bracket | |
|---|---|
| field of application: | |
| - material: | chips, chopped wood G30, pellets, briquettes |
| - room dimensions: | l x b: up to 6 x 6 m |
| - filling height: | up to 5 m |
| 2.2 Push floor | |
|---|---|
| field of application: | |
| - material: | chips, chopped wood G80, pellets, briquettes |
| - dimensions: | breadth: up to 2 m lenght: up to 15 m |
| - filling height: | up to 5 m |
3. Conveying systems
3.1 Conveyor screws
Conveyor screws are applied when there is only a small distance between the combustible store room and the boiler plant. The conveyor screw diameter (140 up to 400 mm) depends upon the kind of combustible and upon the conveying capacity.
3.2 Pneumatic transport
For larger distances between the combustible storage room and the boiler plant generally pneumatic conveying systems as circuit system with cyclone as separating element are applied.