Combustion of Organic Waste Gases and Liquids
Gaseous and/or liquid organic residues are completely oxidised in a horizontally positioned, adiabatic combustion chamber at high temperatures, with sufficient turbulence and an appropriate residence time. The hot combustion products are then forwarded for energy recover purposes through cooling systems such as steam generators or thermal oil heaters, and combustion air / waste gas preheaters. If there are any acid components in the flue gas, such as SO2 for example, a flue gas purification stage is added subsequently in the form of a caustic treatment. In close cooperation with the customer, SELAS-LINDE decides which of the above systems will be used. The selected system is then specially tailored to the customer's requirements.
In general, all gaseous and liquid hydrocarbons, even those containing proportions of nitrogen and sulphur compounds, are suitable for combustion in the system described above. Individually, these may be:
production exhaust air
production exhaust air gases
liquid residues
The adiabatic combustion chambers may be in one or more layers, and are lined with incombustible materials. These are suitable for combustion chamber temperatures of up to 1500°C. The following incombustible materials may be used:
refractory lightweight blocks
high-alumina shaped bricks
insulating concrete
acid-resistant ceramic products
For the design of the incombustible lining of the combustion chambers, particular attention is paid to the pollutant components and to the corrosion protection measures to be taken.
Beispiel 1
DOW, Böhlen
1,500 kg/h organic liquid residue
8,150 kg/h aqueous residue |
| 17 t/h saturated steam (12 bar) |
| 2-stage flue gas scrubbing with integrated quench |
| in line with the 17th Federal Order on Emissions Protection (BImSchV) |
Beispiel 2
SABIC, Gelsenkirchen
| 9,200 kg/h organic flue gases |
| 22 t/h superheated steam (18 bar, 220 °C) |
| in line with TA-air regulations |
| Engineering, material delivery, commissioning monitoring |
