2 ОРГАНИЗАЦИЯ И МЕТОДИКА РАБОТ - Courrier international

11.3.4 Procedures for conservation (liquidation) of sovtol and other PCB-containing liquids .
11.3.4.1 Stage of high-temperature oxidation of PCB-waste.
At low concentrations of the active substance in the PCB-containing liquids, the most expedient at the
moment is the high-temperature oxidation of PCB-waste directly at the site of Alexandra Island using a
mobile unit. In this case, the high-temperature oxidation (combustion) of PCB waste is implemented
based on technology developed by LLC "NIITONH i BT» [64, 65].
This technology is based on a set of systems of high-temperature oxidation (node thermal expansion),
afterburner and neutralization of waste gases. Thermal cracking unit of waste (Figure 11.3.4) invited to
perform in a rotating tube furnace and a plasma afterburner.
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Figure 11.3.4 Scheme of thermal cracking of PCB-waste
1 waste feed node; 2 pipe furnace; 3 jet compressor;
4 afterburner; 5 tank for collecting refuse burnout
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The furnace design allows speed control and tilt tubes, purging the working chamber and the air
temperature from 400 up to 1000 0C. Plasma afterburner is designed for complete thermal elimination of
waste from the furnace gases at a temperature of about 1400 0C.
These design features allow you to:
maintain the desired temperature of the furnace depending on the class of waste, and the possibility of
making PCB component in the gas phase of withdrawal from the provision of energy saving on heating;
conduct regulation time, the thermal cracking of waste due to changes in speed and angle of the pipe;
implement processes in a furnace or oxidative pyrolysis, pyrolysis, or depending on the physicochemical
properties of toxicants and the material is destroyed;
for complete thermal degradation of organic compounds in the plasma afterburner.
In the construction site of the thermal cracking of waste jet compressor and afterburner attached to a
function of the provisional stage flue gas cleaning. Thus, the use of the scheme jet compressor (3),
provides a pre-cooling the exhaust gases, dilution of gaseous pollutants by compressed air and flow into
FINAL REPORT for Contract No. CS-NPA-Arctic-13/2009 of December 01, 2009 within the framework of pilot project Development of
Technology of clean up of the area of Decommissioned Sites of The Russian Federation Ministry of Defense in the Arctic by the Example of
Alexanra Island of Franz Josef Land Archipelago from Hazardous Waste
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