Plasma destruction of solid waste esp. chemically stable dangerous or toxic waste - by converting to paste, and feeding to plasma flame in pyrolysis chamber via refractory inlet tube

摘要

In a solid waste destruction process, in which the waste is conditioned in paste form and then fed into a plasma flame (3) for instantaneous pyrolysis in a pyrolysis chamber (2), (a) the conditioned waste is introduced into the pyrolysis chamber (2) by a refractory inlet tube (22) which discharges transversely to the orientation of the plasma torch (18); and (b) the pyrolysis products are evacuated from the pyrolysis chamber (2) along the extension of the inlet tube (22). An installation for carrying out the process is also claimed. USE/ADVANTAGE - Esp. useful for destruction of chemically stable, dangerous or toxic waste (e.g. non-conformed hexachlorocyclohexane). It has high destruction removal efficiency (e.g. greater than 99.999%) and high combustion efficiency (e.g. greater than 99.999%), produces low residual volatile organic content and dust content in the offgas, and minimises the risk of deterioration of high temp. zones of the installation.