Pre-oxidation furnace

A technology of pre-oxidation furnace and furnace body, which is applied in the fields of fiber chemical characteristics, textiles and papermaking, etc. It can solve the problems of increasing the production cost of pre-oxidation furnace, achieve the effect of simple structure, save equipment and production cost, and prevent spontaneous combustion
CN101684576AInactive Publication Date: 2010-03-31HEFEI RISINE HEATEK
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HEFEI RISINE HEATEK
Publication Date
2010-03-31
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a pre-oxidation furnace, which comprises a furnace frame on which a furnace body is fixed; the inside of the furnace body is fixed with horizontally arranged clapboards which divide a furnace retort in the furnace body into a plurality of layers of mutually independent furnace chambers; a front end face and a rear end face which are opposite on each layer of furnace chamberare respectively provided with a yarn inlet and a yarn outlet; opposite side walls of each layer of the furnace chamber are provided with an air inlet and an air outlet; the pre-oxidation furnace comprises a fan; and an air outlet of the fan is communicated with the air inlet of each layer of the furnace chamber through an air intake system, while an air inlet is communicated with the air outletof each layer of the furnace chamber through an air outlet system. The pre-oxidation furnace has simple structure, and solves the problems of the prior pre-oxidation equipment in aspects of temperature uniformity, an oxygen content control system and a spontaneous precursor combustion phenomenon, and an effective space of a hearth is fully utilized, so equipment and production cost is saved, and the economic production of carbon fibers is feasible.
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Description

Technical field:

[0001] The invention belongs to the field of carbon fiber production equipment, and mainly relates to a pre-oxidation furnace. Background technique:

[0002] The pre-oxidation furnace is a heat treatment furnace for oxidizing and heat-treating raw silk to prepare oxidized fibers. A number of guide rollers are arranged outside the pre-oxidation furnace to guide the raw silk. The basic oxidation process of the precursor is as follows: use the oxidized fiber precursor for carbon fiber preparation, such as polyacrylonitrile (PAN)-based continuous fiber, to make it run through the heat treatment chamber along a zigzag path under the guidance of many guide rollers. The raw silk will be gradually pre-oxidized when passing through the heat treatment chamber. Since the pre-oxidation process of the raw silk is carried out step by step, if the raw silk is carried out at high temperature in the early stage of heat treatment, the tow will burn due to insufficient oxida...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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