Pre-oxidation furnace hot air circulation system

Abstract

The invention provides a hot air circulating system of a pre-oxidation oven. The hot air circulating system comprises an oven body, an air intake channel and an air return channel, wherein the air intake channel and the air return channel are formed in the oven body and communicated in an end-to-end manner; a partition wall is arranged in the oven body; the oven body is divided into at least two independent hot air circulating units in the length direction by the partition wall; a longitudinal partition board is arranged in each hot air circulating unit of the oven body in the length direction of the oven body; two ends of each longitudinal partition board are connected with a corresponding inner wall of the oven body by a corresponding air distribution board; the air intake channel is formed by the space which is jointly surrounded by the longitudinal partition boards, the air distribution boards and the inner walls of the oven body; and the air return channel is formed by the space which is jointly surrounded by the longitudinal partition boards, the air distribution boards, the inner walls of the oven body and the partition walls. According to the scheme of the hot air circulating system disclosed by the invention, the problems that the circulating resistance of air is large and the internal temperature is uneven can be solved; and the circulating efficiency of hot air circulation and the quality of pre-oxidation treatment are improved.

Description

technical field [0001] The invention relates to the technical field of carbonized fiber preparation, more specifically, to a hot air circulation system of a pre-oxidation furnace. Background technique [0002] In the existing pre-oxidation furnace hot air circulation system, the return air channel and the air intake air channel are usually arranged up and down inside the pre-oxidation furnace. The return air channel is located above the air intake channel, and the cross sections of the two channels are flat. The method is not conducive to the circulation of air, especially when the length of the air inlet channel and the return air channel is long, the air flow resistance increases significantly, which greatly reduces the circulation efficiency of hot air, and seriously affects the uniformity of the temperature inside the air inlet channel. property, leading to a decline in the quality of the preoxidized material. Contents of the invention [0003] The invention provides ...

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Problems solved by technology

[0002] In the existing pre-oxidation furnace hot air circulation system, the return air channel and the air intake air channel are usually arranged up and down inside the pre-oxidation furnace. The return air channel is located above the air intake channel, and the cross sections of the two channels are flat. The method is not conducive to the circulation of air, especially when the length of the air inlet channel and the return air channel is long, the air flow resistance increases significantly, which greatly reduces the circulation efficiency of hot air, and seriously affects the uniformity of the temperature inside the air inlet channel. Sexuality, leading to a decline in the quality of preoxidized materials

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