How it Works
The TCC cleans the waste using evaporation to separate the fluids from the cuttings, a thermal desorption technology, but also has a key difference from traditional systems, which transfer heat indirectly from large surfaces that are heated by steam, hot oil or heat tracing.
The TCC excels because the waste is heated in a fundamentally different way – by friction. The highly efficient TCC flash evaporates water and oil in a fraction of the exposure time required in indirect dryers.
As a result, minimal thermal degradation of the base oil occurs, thus enabling the valuable product to be reused.
In addition, the TCC has significant safety advantages over indirect dryers and complies with the latest Ex requirements.
The heart of the TCC is a barrel-shaped chamber (the stator) that houses a shaft with a series of hammer arms (the rotor). The rotor is set into high-speed motion by a motor or engine.
The rotation forces the heavier parts of the waste to the inner walls of the stator. The rotor’s extreme hammering against this material bed creates a friction and thus the heat that evaporates the oil and water.
Value of recovered base oil – The recovered base oil has a high commercial value because the quality is comparable to that of new oil.
Value of dried solids – The solids have a potential commercial value because they are suitable for use in asphalt or coating specifications. Alternatively, it may be possible to discharge dried solids to see (in the UK, for example, the TCC has no problem meeting the 1% oil-on-cuttings requirement) with no additional costs, or to send them to landfill.
Capacity – Capacity depends first on engine or motor size; however, in any thermal desorption process, a significant proportion of the total energy consumption is related to changing the water from liquid to gas phase. The capacity, therefore, also depends on the amount of water in the waste.
Energy Efficiency Typically, 95% of the direct energy input is retained.
Energy Costs (electric) The system will consume around 260/250kWh per tone of cuttings when powered by a 450/490kW electric motor at a solids: water: oil ratio of 70:15:15.
Energy Costs: (diesel) When powered by diesel engine, the TCC will consume 50 to 60L of diesel per tone of cuttings at a solids: water: oil ratio of 70:15:15. The recovered oil at remote locations also could fuel the engine; in this case, the TCC will consume around one-third of the volume of the recovered oil.
Manpower Just one operator is required to run the fully automated unit. The logistics of bringing cuttings into the plant and of taking recovered products out should be also be taken into account.
Maintenance Daily maintenance is easy to perform because of the rapid shutdown and start-up procedure. For major maintenance work, various regimes are offered to suit the operator’s strategy.
We deliver standard or tailor made diesel or electrically powered units in sizes from 150 to 1000kW. We can upscale to larger drives on request.
- Screening device
- Mixing Tank
- Drive Unit (diesel or electric)
- Process Mill
- Devices for further oil cleaning of the oil vapors
- Condensing System (oil and water)
- Oil-Water Separator
- Controls System
- Electrical Cabinets