The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 27, 1998
Filed:
Dec. 06, 1996
Hansjoerg Herden, Rodgau, DE;
Stefan Federhen, Frankfurt, DE;
Gernot Mayer-Schwinning, Bad Homburg, DE;
Hubert Roth, Bad Vilbel, DE;
Metallgesellschaft Aktiengesellschaft, Frankfurt am Main, DE;
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).