Pre-oxidation device for carbon fiber production

A pre-oxidation and carbon fiber technology, applied in the fields of fiber chemical characteristics, textiles and papermaking, etc., can solve the problems of poor sealing of the furnace body and uneven isothermal zone, etc., and achieve the effect of uniform temperature, reasonable distribution of temperature zone and temperature gradient

Active Publication Date: 2017-03-08
HARBIN TIANSHUN CHEM TECH DEV CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are many types of pre-oxidation furnaces at home and abroad, including internal heating pre-oxidation furnaces, external heating pre-oxidation furnaces, hot air circulation furnaces, solid-solid heat transfer furnaces, and pre-oxidation furnaces wi

Method used

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  • Pre-oxidation device for carbon fiber production
  • Pre-oxidation device for carbon fiber production
  • Pre-oxidation device for carbon fiber production

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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings, but the following detailed description is not considered to limit the present invention.

[0021] in, figure 1 It is a schematic diagram of the structure of the first pre-oxidation furnace body of the present invention. figure 2 It is a schematic diagram of the structure of the second pre-oxidation furnace body of the present invention. figure 1 and figure 2 The direction of the middle arrow is the advancing direction of the fiber tow. image 3 It is a structural schematic diagram of the joint between the ventilation pipe and the furnace of the present invention. image 3 The direction of the middle arrow is the flow direction of the hot air provided by the air supply system.

[0022] From Figure 1-Figure 3 It can be seen that the pre-oxidation device comprises two pre-oxidation furnaces connected in series, i.e. the first pre-oxidation furnace 1 and th...

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Abstract

The invention discloses a pre-oxidation device for carbon fiber production and belongs to the technical field of carbon fiber production and processing. The pre-oxidation device comprises a pre-oxidation furnace, an air supply system, an exhaust system, driving devices and a temperature detection control system; the pre-oxidation furnace is serially composed of a first pre-oxidation furnace body and a second pre-oxidation furnace body, each of the first pre-oxidation furnace body and the second pre-oxidation furnace body is provided with a plurality of hearths arrayed up and down in parallel, temperature of the hearths in the first pre-oxidation furnace body is gradually increased from bottom to top, and temperature in the second pre-oxidation furnace body 5 is gradually increased from top to bottom; the air supply system and the exhaust system are connected with the hearths of the first pre-oxidation furnace body and the second pre-oxidation furnace body through pipelines, and the driving devices are mounted at two ends of the hearths. The pre-oxidation device has the advantages of reasonable distribution of temperature regions and temperature gradient, temperature uniformity of a heating system and the like, the temperature in the hearths can be precisely controlled to be gradually varied within 100DEG C and 300DEG C, and temperature control precision is ensured not to be lower than +/-0.5DEG C.

Description

technical field [0001] The invention relates to a preoxidation device used for carbon fiber production, belonging to the technical field of carbon fiber production and processing. Background technique [0002] The first step in the production process of carbon fiber carbonization is the pre-oxidation process, the purpose of which is to transform the polyacrylonitrile precursor with linear macromolecular chains into a non-melting and non-combustible heat-resistant trapezoidal structure after high-temperature oxidation treatment, so that it can withstand The subsequent high-temperature carbonization process keeps the fiber state. [0003] The pre-oxidation process has a great influence on the quality and yield of carbon fiber. At present, there are many types of pre-oxidation furnaces at home and abroad, including internal heating pre-oxidation furnaces, external heating pre-oxidation furnaces, hot air circulation furnaces, solid-solid heat transfer furnaces, and pre-oxidatio...

Claims

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Application Information

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IPC IPC(8): D01F9/22
CPCD01F9/22
Inventor 孟凡钧孟子顺
Owner HARBIN TIANSHUN CHEM TECH DEV CO LTD
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