Since mankind's early beginnings, mining, metallurgy and the subsequent processing of natural resources have evolved into one of the most significant industries. Known as 'heavy-industry', this branch plays an important economic role in most countries.
The scope of applications for CTP systems ranges from the mining of natural resources (e.g. bauxite and gold-ore mining), through the production of acetylene gas from coal and calcium carbonate, to the aluminium and steel industry and their foundries.
In order to ensure pure and healthy air, especially in a factory's closed surroundings, many different contaminants resulting from the production processes must be eliminated. Most of the waste gas flows are very large and reach up to 240.000 Nm³/h.
For these processes CTP applies regenerative thermal oxidation systems (RTOs). Depending on the process requirements the RTOs are equipped with additional options such as special filters, scrubbers or dry adsorbers. The difficult processes in this industry constantly provide new challenging tasks for the CTP R&D department.
Did you know?
CTP’s advanced APC technology can be found in the largest anode/cathode production lines world-wide.
The big challenge in these applications are the carcinogenic polycyclic aromatic hydrocarbons (PAH).
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Some selected example references
Alumina
Emission source:
Oxalate kiln
Contaminants:
- Aldehydes
- Carbon monoxide
- Volatile organic compounds
CTP system:
3-bed RTO + scrubber for 26.250 Nm³/h
Graphite electrodes
Emission source:
Baking furnace
Contaminants:
- Benzene
- Hydrocarbons (HC)
- Carbon monoxide
- Nitrogen compounds
CTP system:
6-bed RTO + filter + pre-heating for 65.000 Nm³/h
Anodes for aluminum electrolysis
Emission source:
Anode baking process
Contaminants:
- Hydrogen fluoride
- Sulfur dioxide (SO2)
- Dust
- Carbon monoxide
- Volatile organic compounds
- Condensed hydrocarbons
- PAH (EPA-16)
CTP system:
6 x Prefilter, 3 x 5-bed RTO for 200.000 Nm³/h + 3 x HF-filter
Tungsten (wolfram) powder production
Copper recycling
Emission source:
Shaft kiln c
Contaminants:
- Dioxins/Furans
- Carbon monoxide
CTP system:
VOXcube 3-450 incl. adsorber for 50.000 Nm³/h
Cylinder head production
Emission source:
Casting machines and hall ventilation
Contaminants:
- Benzene
- Formaldehyde
- Phenol
- Toluene
- Xylene
- Dust
- Ethylbenzene
CTP system:
AutoTherm 3-bed + filter and heat recovery for 130.000 Nm³/h