Online pulling and inserting structure of return air inlet mesh plates of pre-oxidation furnace and pre-oxidation furnace

A technology of pre-oxidation furnace and air return port, which is applied to the chemical characteristics of fibers, textiles and papermaking, etc. It can solve the problems of toxic and harmful gas overflow and disadvantages, and achieve the effect of online cleaning

Pending Publication Date: 2019-12-17
ZHEJIANG JINGGONG SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the whole process of online cleaning and replacing the mesh plate will be accompanied by the overflow of toxic and harmful gases in the furnace body, causing adverse consequences

Method used

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  • Online pulling and inserting structure of return air inlet mesh plates of pre-oxidation furnace and pre-oxidation furnace
  • Online pulling and inserting structure of return air inlet mesh plates of pre-oxidation furnace and pre-oxidation furnace
  • Online pulling and inserting structure of return air inlet mesh plates of pre-oxidation furnace and pre-oxidation furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] The online insertion and insertion structure of the mesh plate at the air return port of the pre-oxidation furnace in this embodiment realizes the online cleaning or replacement of the mesh plate.

[0054] Specifically, such as Figure 1-9 As shown, the pre-oxidation furnace of this embodiment includes a furnace body 1, an air outlet device 2 and a return air device 3 installed in the furnace body, and guide rollers 4 installed corresponding to the left and right ends of the furnace body 1 .

[0055] Specifically, such as figure 1 and 2 As shown, the furnace body 1 is surrounded by two vertical side walls 1a opposite in the length direction, two vertical end walls opposite in the width direction, a top wall 1b, and a bottom wall 1c. Hollow cuboid structure; the end walls at the left and right ends of the furnace body have seven sets of through-holes arranged at vertical intervals; the furnace body 1 has a wire-running channel 10 distributed along its length, that is, ...

Embodiment 2

[0070] The online extraction and insertion structure of the mesh plate at the air return port of the preoxidation furnace in this embodiment realizes online cleaning or replacement of the mesh plate.

[0071] Specifically, as Figure 14-24 As shown, the pre-oxidation furnace in this embodiment is an end-to-end blowing structure, including a furnace body 1', an air outlet device 2', a first air return device 3' and a second air return device 4' installed in the furnace body. , and also includes guide rollers 5' installed corresponding to the left and right ends of the furnace body 1'.

[0072] like Figure 14 and 15 As shown, the furnace body 1' is surrounded by two vertical side walls 1a' oppositely arranged along the length direction, two vertical end walls oppositely arranged along the width direction, a top wall 1b', a bottom wall 1c' The hollow cuboid structure is formed; the end walls of the left and right ends of the furnace body have seven groups of oppositely arrang...

Embodiment 3

[0086] The difference between the online drawing and insertion structure of the pre-oxidation furnace return air outlet mesh plate of this embodiment and the first embodiment is that:

[0087] All the sealing sleeves are connected to the same suction channel through their respective connecting pipes, so that multiple suction channels are not required to meet the requirements of different application occasions.

[0088] The pre-oxidation furnace of this embodiment includes the online drawing and insertion structure of the mesh plate of the return air outlet of the pre-oxidation furnace of this embodiment, and the pre-oxidation furnace is used for manufacturing carbon fibers.

[0089] Other structures can refer to Embodiment 1.

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Abstract

The invention belongs to the technical field of pre-oxidation furnaces, and particularly relates to an online pulling and inserting structure of return air inlet mesh plates of a pre-oxidation furnaceand the pre-oxidation furnace. The pre-oxidation furnace comprises a furnace body and an air return device arranged in the furnace body, wherein the air return device is provided with one or more return air inlets, and the mesh plates are arranged corresponding to the return air inlets respectively. The online pulling and inserting structure comprises pulling and inserting ports which are formedin the furnace body and correspond to the mesh plates one to one, and sealing plugs which are in insertion fit with the pulling and inserting ports in a one-to-one correspondence mode. The online pulling and inserting structure also comprises an air suction channel used for being communicated with the pulling and inserting ports when the sealing plugs are separated from the pulling and inserting ports so as to recycle gas flow passing through the pulling and inserting ports. According to the online pulling and inserting structure of the return air inlet mesh plates of the pre-oxidation furnace, online cleaning of the mesh plates is achieved; in addition, through the design of the air suction channel, in the online cleaning process of the mesh plates, toxic and harmful gas overflowing in the furnace body is recovered by the air suction channel, and adverse consequences are avoided.

Description

technical field [0001] The invention belongs to the technical field of pre-oxidation furnaces, and in particular relates to an on-line drawing and insertion structure of a mesh plate at a return air outlet of a pre-oxidation furnace and a pre-oxidation furnace. Background technique [0002] In the process of carbon fiber production, the pre-oxidation of the precursor plays a role of connecting the past and the future, and the pre-oxidation process of the precursor directly affects the yield and performance of carbon fiber. The purpose of the pre-oxidation process is to convert the thermoplastic PAN linear macromolecular chain into a non-plastic heat-resistant trapezoidal structure, making it infusible and non-combustible at high carbonization temperatures, maintaining the fiber shape, and thermodynamically in a stable state, and finally transforming into a turbostratic graphite structure. carbon fiber. According to the requirements of the pre-oxidation process, the pre-oxid...

Claims

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Application Information

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IPC IPC(8): D01F9/32
CPCD01F9/328
Inventor 傅建根金振峰卫国军孙海梁韩剑飞孙力锋
Owner ZHEJIANG JINGGONG SCI & TECH
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