| 摘要 |
<p>PCT No. PCT/FR87/00213 Sec. 371 Date Jan. 15, 1988 Sec. 102(e) Date Jan. 15, 1988 PCT Filed Jun. 12, 1987 PCT Pub. No. WO87/07938 PCT Pub. Date Dec. 30, 1987.The invention concerns a process and an apparatus for optimizing combustion in a furnace which has open chambers, referred to as a ring furnace, for the baking of carbonaceous blocks, the furnace comprising a plurality of preheating, baking and cooling chambers which are aligned in series, each chamber being formed by the alternating juxtaposition of hollow heating partitions in which the combustion gases circulate and compartments in which the carbonaceous blocks to be baked are stacked, the combustion gases being extracted by a suction pipe connected by delivery tubes to each of the heating partitions of the first natural preheating chamber. The apparatus is characterized in that each delivery tube 2 of the suctuion pipe is provided with a movable closure flap 11 controlled by a motor 12, a means for measuring the temperature and the depression in the corresponding partition, a means 19, 20, 21 for measuring the opacity, by reflection, of the fumes issuing from each heating partition 1, and a means for controlling the position of the closure flap 11 and therefore the flow rate in each partition 1 in dependence on the combined measurement of fume opacity, temperature and depression.</p> |
