초록 ▼

A system and apparatus therefor for the removal and destruction of harmful toxic polychlorinated biphenyls (PCBs) from a fluid, such as electrical transformer oil. The contaminated fluid is pumped through heating equipment to raise its temperature to a predetermined level prior to it being fed into

A system and apparatus therefor for the removal and destruction of harmful toxic polychlorinated biphenyls (PCBs) from a fluid, such as electrical transformer oil. The contaminated fluid is pumped through heating equipment to raise its temperature to a predetermined level prior to it being fed into a mixing chamber. An injector mechanism feeds a predetermined quantity of a reagent, such as an elemental sodium dispersion, into the mixing chamber where a power-driven impeller thoroughly mixes the two fluids. This mixture is fed into a reaction zone, preferably consisting of a plurality of closely nested back-and-forth tubes of a predetermined length and cross-sectional area wherein a chemical reaction occurs between the PCB-fluid and reagent forming harmless by-products which are insoluable in the now decontaminated fluid. The solid by-products are removed in a separator, such as a filtering medium or centrifuge, and any gases and water vapor are removed in a deep vacuum degasser. The trapped, harmless by-products then can be disposed of in a conventional, safe manner and the decontaminated fluid can be returned to its point of origin for reuse.

대표청구항 ▼

A system for the continuous destruction of polychlorinated biphenyl present in a fluid including: (a) a mixing chamber; (b) agitating means in the mixing chamber for thoroughly agitating and mixing the contents of said chamber; (c) pump means for feeding a predetermined quantity of the fluid contain

A system for the continuous destruction of polychlorinated biphenyl present in a fluid including: (a) a mixing chamber; (b) agitating means in the mixing chamber for thoroughly agitating and mixing the contents of said chamber; (c) pump means for feeding a predetermined quantity of the fluid containing polychlorinated biphenyl into the mixing chamber; (d) heating means for raising the temperature of the fluid to a predetermined temperature; (e) injector means for feeding a predetermined quantity of a reagent such as an elemental sodium or potassium dispersion into the mixing chamber, said injector means operatively communicating with the pump means whereby the amount of fluid being fed by said pump means into the mixing chamber controls the quantity of reagent being fed into the mixing chamber by the injector means; (f) reaction chamber means operatively connected to the mixing chamber for receiving the fluid containing the polychlorinated biphenyl and reagent from said mixing chamber, said reaction chamber having an elongated configuration with a linear length in the direction of flow greater than the square root of the cross-sectional area of the chamber across the direction of flow; (g) separator means for separating the products of reaction between the polychlorinated biphenyl and reagent from the fluid leaving the reaction chamber means; and (h) degassing means for removing certain gases contained in the fluid and products of reaction leaving the separator means.