EDC Cracking Furnaces
Today, vinyl chloride (VCM) is one of the most important monomers used for the production of many different polymerisates. It is produced by the thermal cracking of ethylene dichloride (EDC) in a fired tubular furnace at approx. 500°C and pressures of approx. 30 bar.
since 1957
|
|
over 130 new plants and 5 upgrades |
| 1988 to 2003 |
|
34 new plants and 4 upgrades |
| VCM capacity (8000 h/a): |
|
8.4 - 27.6 t/h, (up to 220,000 t/yr) |
| Conversion rate: |
|
50 - 60% |
| Thermal efficiency: |
|
85 - 92% |
| NOx emissions: |
|
<200 mg/Nm³ (depending on air preheating) |
| Licenser: |
|
EVC
DOW
GEON
Stauffer
Hoechst
Mitsui
Solvay |
| Furnace type: |
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Box or round furnaces with surface-mounted or offset convection zone |
| Firing: |
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Side wall firing (box furnaces) or bottom firing (round furnaces) |
| Tube layout: |
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horizontal or vertical, on outside wall |
