Process and apparatus for separating polycyclic and polyhalogena

Details Process and apparatus for separating polycyclic and polyhalogena Process and apparatus for separating polycyclic and polyhalogena

1996-12-06

1998-10-27

Tran, Hien

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Waste gas purifier

422168, 422169, 422170, B01D 5000

Patent

active

058274847

ABSTRACT:
The apparatus for separating toxic organic substances from a dust-containing exhaust gas of a sintering plant, includes a clay adsorption agent, advantageously consisting of kaolinite, bentonite, illite and/or mixtures thereof, having a mean particle diameter of from 5 to 100 micrometers; a solids-entraining reactor (4) connected to the sintering plant (1) to receive the exhaust gas containing dust from it and a supply device (5) with feed line (6) for supplying the clay adsorption agent to the solids-entraining reactor (4) to bring the entire exhaust gas containing dust into contact with the clay adsorption agent for a reaction time of from 0.5 to 10 seconds above a dew point of the exhaust gas at a temperature from 90.degree. to 180.degree. C. and at a velocity from 6 to 20 meters per second to thus form a gas-solids suspension having a mean suspension density of from 5 to 500 g solids per sm.sup.3 of the exhaust gas; a cyclone (R) for separating and recycling recovered solids from the gas-solids suspension to form a partially purified gas; and a multifield electrostatic precipitator (7) connected to the cyclone(R) to form separated solids and a purified gas from the partially purified gas; and a recycling device (9) for recycling the separated solids formed in the electrostatic precipitator (7) to the solids-entraining reactor (4).

REFERENCES:
patent: 4006066 (1977-02-01), Sparwald
patent: 5028338 (1991-07-01), Hooykaas
patent: 5254797 (1993-10-01), Imoto et al.
patent: 5439658 (1995-08-01), Johnson et al.
patent: 5462718 (1995-10-01), Abdulally

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