Filtration and combustion process for carbon particulate...

C - Chemistry – Metallurgy – 10 – L

Patent

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Details

C10L 10/06 (2006.01) B01J 23/10 (2006.01) C10L 1/12 (2006.01) C10L 1/18 (2006.01) C10L 1/188 (2006.01) C10L 1/24 (2006.01) C10L 1/30 (2006.01) C10L 10/02 (2006.01) F01N 3/023 (2006.01) F01N 3/029 (2006.01) F01N 3/38 (2006.01) F02D 19/12 (2006.01) F01N 3/20 (2006.01) F01N 3/30 (2006.01)

Patent

CA 2180181

The object of the invention is a filtration and combustion process for carbon particulate matter from an internal combustion engine. The process is characterized by the following steps: a rare earth or rare earth mixture derivative is introduced into the fuel at a concentration of 10 ppm to 500 ppm (by weight), and preferably of 20 ppm to 200 ppm; the soot produced by the internal combustion engine is collected on a filter, the temperature of the gases entering the filter being selected in the range of 100 ~C to 350 ~C; the soot is allowed to build up until a significant fraction or rate of incoming soot is balanced by the combustion of soot in the soot cake on the filter, and no regeneration is effected as long as the head loss caused by the soot does not exceed a preselected value and is not higher than 400 millibars. This invention is useful for organic synthesis.

La présente invention a pour objet un procédé de filtration et de combustion de matières carbonées issues des moteurs à combustion interne. Ce procédé se définit en ce qu'il comporte les dispositions suivantes: introduire dans le carburant un dérivé de terres rares ou de mélange de terres rares à une concentration comprise entre 10 ppm et 500 ppm (en masse), de préférence entre 20 ppm et 200 ppm; recueillir sur un filtre les suies produites par le moteur à combustion interne, la température des gaz entrant dans le filtre étant choisie dans l'invervalle 100 °C-350 °C; laisser les suies s'accumuler jusqu'à atteindre un régime ou une fraction notable des suies arrivantes est compensée par la combustion de suies dans le gâteau de suies sur le filtre et ne prévoir aucune régénération tant que la perte de charge provoquées par les suies n'excède par une valeur choisie à l'avance et n'excédant pas 400 millibar. Application à la synthèse organique.

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