A carbon fiber preoxidation furnace with uniform temperature field

Abstract

The invention relates to the technical field of carbon fiber processing, in particular to a carbon fiber pre-oxidation furnace with a uniform temperature field. Pass through; the distributor is arranged at the air inlet in the wire passage; the distributor includes two symmetrically arranged distribution assemblies, each distribution assembly includes a vertical distribution cavity and an end distribution cavity; the pair of vertical distribution cavities enter from the air inlet Part of the air flow from the air inlet is turned upward and downward, and the two end distribution cavities turn the remaining air flow entering from the air inlet to both ends of the wire passage; two return air systems are set on both sides of the wire passage, respectively collecting The air flow of the return air cavity at both ends of the wire passage is transported to the two air inlets respectively; a heater is installed in the return air system. The carbon fiber pre-oxidation furnace with a uniform temperature field of the present invention can keep the temperature field in the furnace uniform and improve the pre-oxidation effect of the raw silk.

Description

technical field [0001] The invention relates to the technical field of carbon fiber processing, in particular to a carbon fiber preoxidation furnace with a uniform temperature field. Background technique [0002] Pre-oxidation is an important step in the production of carbon fiber, which plays the role of converting the precursor fiber into carbon fiber. In a high-temperature carbonization environment, it changes into carbon fibers with a turbostratic graphite structure. Therefore, this process is closely related to the properties of carbon fibers and is extremely important. [0003] The pre-oxidation process is usually realized by a pre-oxidation furnace, and the structure of the pre-oxidation furnace in the related art is usually as follows: a wire passage is set, the raw wire is passed through the wire passage, and then the air flow is blown into the wire passage from one end, and the air is blown from the other end. One end of the recovered air flow is sent from the ou...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a carbon fiber pre-oxidation furnace with uniform temperature field in view of the defects in the prior art, so as to solve the uneven temperature field in the oxidation furnace in the prior art, resulting in different pre-oxidation degrees of different parts of the precursor , the problem that affects the quality of carbon fiber

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