| 摘要 |
FIELD: environmental science. ^ SUBSTANCE: invention relates to environmental science, precisely to method of nongrade pecticide detoxication by using thermochemical method and useful plant model of plasma chemical utilisation of pesticide wastes. Method of pesticide detoxification includes pesticide supply to a rotating furnace for detoxification, thermal action in the rotating furnace with extracting active substance in gaseous phase receiving solid calcine which is withdrawn from the furnace, afterburning of produced gases providing decomposition of complex substances of gas flow to simple on and refining of afterburning products. Thermochemical treatment over pesticides in the rotating furnace is carried out at the temperatures to 1000C by oxygenising, decomposing and subliming. Produced gases are withdrawn from the rotating furnace from the side of pesticide load. Afterburning is carried out at the temperature now lower than 1200C in a reactor with plasmatron, plasma-supporting working body of which is aqueous vapor deriving in steam generator. Refining from nitrogen oxides in the reactor is carried out by neutralising when delivering urea in its bottom part. Thereafter, gaseous products derived in the reactor are delivered in a quenches for rapid cooling till the temperature not higher than 100C and for partial neutralising and absorption of toxic matters due to interacting with coolant fluid - alkali water or water with further supplying in absorption device for additional refining before exhausting in atmosphere. ^ EFFECT: decrease of toxic matter content in exhaust gases. ^ 1 cl, 1 dwg |
