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Monomer recovery device in carbon fiber precursor production and method thereof

A technology for recycling carbon fiber precursors and monomers, which is applied in the field of monomer recovery devices in the production of carbon fiber precursors. It can solve the problems that the temperature control of the tower kettle cannot be automatically controlled, and achieve the effect of reducing personnel operations and avoiding misoperations

Pending Publication Date: 2021-12-31
KANGDE CARBON VALLEY TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the technical problem that the existing device and method cannot realize automatic control of the temperature control of the tower kettle, and provides a monomer recovery device and method in the production of carbon fiber precursor that can realize automatic control of the tower kettle temperature

Method used

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  • Monomer recovery device in carbon fiber precursor production and method thereof
  • Monomer recovery device in carbon fiber precursor production and method thereof
  • Monomer recovery device in carbon fiber precursor production and method thereof

Examples

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Embodiment Construction

[0030] The invention is further described below in connection with the examples.

[0031] like figure 1 , The present invention provides a monomer recovery apparatus production of carbon fiber precursor, which is provided with a feed flow meter M1. 1, M1 feed control valve 2, M2 feed flow meter 3, M2 feed adjusting valve 4, the steam feed flow meter 5, steam feed control valve 6, the steam condensate trap 7, 8 reboiler, monomer recovery column 10, plates 11 monomer recovery column, reflux control valve 14; 15, 15 reflux flow meter ; 16, overhead condenser 16; 17, chilled water control valve 17; 18, reflux drum 18; 19, return pump 19; 20, recovery tower bottom pump 20.

[0032] The index process control procedure, provided the feed flow meter M1 and M2 feed 1 flow meter 3, and constitute FICA001 FICA002 circuit controlled by the feed control valve.

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Abstract

The invention relates to a monomer recovery device in carbon fiber precursor production and a method thereof, and solves the technical problem that the tower kettle temperature cannot be automatically controlled, the monomer recovery device is provided with a monomer recovery tower, a tower top condenser and a tower kettle reboiler, the monomer recovery tower is a plate tower, and the tower top condenser and the tower kettle reboiler are shell-and-tube heat exchangers; the monomer recovery tower is provided with a tower bottom outlet pipeline, the tower bottom outlet pipeline is connected with the tower kettle reboiler, the monomer recovery tower is provided with a tower top outlet pipeline, and the tower top outlet pipeline is connected with the tower top condenser and is used for condensing steam at the tower top of the monomer recovery tower. The invention also provides a monomer recovery method in carbon fiber precursor production. The method can be used in the field of carbon fiber preparation.

Description

Technical field [0001] The present invention relates to a carbon fiber production apparatus and method, and more particularly, to a carbon fiber precursor monomer recovery and production methods. Background technique [0002] Acrylonitrile (AN) in a polyacrylonitrile (PAN) based carbon fiber production process of a polymerizable monomer, dimethylsulfoxide (DMSO) as solvent. Not due to polymerization of the monomer conversion reached 100%, the production process will have a dimethyl sulfoxide solution containing a polymerizable monomer, the monomer recovered in this section, not only the consumption of monomer and solvent, but also to means sewage treatment and production costs, how to recycle part of the monomer, is a pressing issue each production companies are required to face. The multi-tower separation principle in series utilizing chemical recovery, has become a welcomed choice. [0003] Distillation of the current multi-column separation is completed, the key is separated t...

Claims

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Application Information

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IPC IPC(8): C08J11/02C08L33/20
CPCC08J11/02C08J2333/20Y02P70/62
Inventor 沈传石刘运波张立坚张伟赵彦国张超时英勇杨昆陈志敏孙毅刘根房
Owner KANGDE CARBON VALLEY TECH CO LTD
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