Cross-blowing oxidizing furnace device

Abstract

The invention relates to the technical field of tow oxidation furnaces, in particular to a side blowing oxidation furnace device which comprises an oxidation furnace tow moving channel, an air return channel, a fan, a circulating air channel, a multi-channel distributor and an air door, when the air door is opened, airflow in the air return channel is blown into the circulating air channel from the fan, and the airflow in the circulating air channel is blown into the multi-channel distributor through the multi-channel distributor. And after passing through the multi-channel distributor, the pre-oxidized fibers are blown in from the side wall of the wire passing channel of the oxidizing furnace, and return to the air return channel after being uniformly purged in the wire passing channel of the oxidizing furnace, so that side blowing circulation is completed. By arranging circulating air in the width direction of the wire passing channel of the oxidation furnace, compared with the prior art, air is blown in the direction of the inner side of the wire passing channel of the oxidation furnace, vertical shaking of pre-oxidized wires in the oxidation furnace is reduced, and the phenomenon of vertical wire rubbing is prevented; by adopting a lateral air distribution mode, the flowing distance of air in the wire passing channel of the oxidation furnace is shortened, so that the air temperature change is small, and the uniformity of the temperature in the furnace is facilitated.

Description

technical field [0001] The invention relates to the technical field of tow oxidation furnaces, in particular to a side-blown oxidation furnace device. Background technique [0002] In the carbon fiber production process, pre-oxidation is a crucial process, and its function is to convert the precursor of the linear molecular chain structure into a heat-resistant ladder molecular structure; in the pre-oxidation process, its core function is not heating, but It is to efficiently and quickly take away a large amount of heat discharged during the pre-oxidation process of the original fiber, otherwise the heat of the original fiber will be concentrated, which will cause the fusion and even fire between the fibers, which will ultimately affect the performance of the subsequent carbon fiber; [0003] In the related art, the pre-oxidation of carbon fibers is mostly in the form of a hot air circulation oven, that is, the tow passes through the wire passage of the oxidation furnace, an...

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Problems solved by technology

[0004] However, due to the above-mentioned end-to-end or center-to-end circulation mode, due to the long flow distance of the air flow in the wire passage of the oxidation furnace, the temperature of the air will gradually increase during the flow process, which is not conducive to the uniform temperature in the furnace; In the downward circulation mode, the vertical air flow will easily cause the pre-oxidized wire to vibrate up and down in the oxidation furnace, resulting in the phenomenon of rubbing up and down the wire, which will eventually affect the performance of the carbon fiber

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