Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Carbon fiber production wastewater separation treatment and resource utilization process method and device

A technology for production wastewater and quality separation, which is applied in natural water treatment, chemical instruments and methods, heating water/sewage treatment, etc. It can solve the problems of imperfect supporting sewage treatment technology, restricting the domestic scale of carbon fiber, and difficult environmental discharge. , to achieve economic savings, reduce production and operation costs, and reduce heat transfer loads.

Active Publication Date: 2016-09-21
HENAN YONGMEI CARBON FIBER +1
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The toxicity of acrylonitrile itself to microorganisms and the permeability of dimethyl sulfoxide make the passive environmental protection treatment technologies such as biochemistry and degradation used in this type of organic wastewater, which have many problems such as high treatment cost and difficult environmental protection discharge.
At present, there is no comprehensive treatment process and technology integrating safety, low cost and resource utilization for this kind of organic wastewater. The imperfect supporting sewage treatment technology in the industry has become one of the bottlenecks restricting the domestic scale of carbon fiber.

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Carbon fiber production wastewater separation treatment and resource utilization process method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] according to figure 1 Schematic diagram of carbon fiber production waste water separation treatment and resource utilization device connection equipment, its process parameters are shown in Table 1.

[0033] Table 1 Technical parameters of carbon fiber production wastewater separation treatment and resource utilization

[0034] name process temperature process pressure Acrylonitrile content Dimethyl sulfoxide content Stripped waste water 25℃ Atmospheric pressure about 1% about 4% Preheater 75℃ -60Kpa about 1% about 4% Stripping tower top 75℃ -60Kpa >6.89% Remove tower bottom 78℃ -60Kpa about 10% Concentrator tower top 80℃ -60Kpa Concentrator bottom 105℃ -60Kpa about 86% Crude column top 98℃ -90Kpa about 55% Crude column bottom 120℃ -90Kpa 0ppm >99% Refining tower top 117℃ -90Kpa 0ppm Purity>99.97% Refined Tower Bottoms 120℃ -90Kpa 0p...

Embodiment 2

[0041] according to figure 1 Separation treatment and resource utilization process of carbon fiber production wastewater and schematic diagram of device connection equipment, comprehensive treatment and resource utilization of pre-pulled wastewater, device process parameters and process indicators are shown in Table 2.

[0042] Table 2 Process parameters and indicators of the comprehensive treatment and resource utilization device for pre-drawing wastewater

[0043] name process temperature process pressure Acrylonitrile content Dimethyl sulfoxide content pre-pulling wastewater 25℃ Atmospheric pressure about 2% Preheater 75℃ -65Kpa about 2% Stripping tower top 75℃ -65Kpa Remove tower bottom 78℃ -65Kpa about 7% Concentrator tower top 80℃ -65Kpa Concentrator bottom 105℃ -65Kpa 0ppm about 85% Crude column top 100℃ -92Kpa 0ppm about 50% Crude column bottom 120℃ -92Kp...

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
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a separated treatment and resource utilization technological method and device for carbon fiber production wastewater. The device comprises a first vacuum pump unit, a second vacuum pump unit, an acrylonitrile removing tower, a dimethyl sulfoxide concentrating tower, a crude product tower and a refining tower. According to the method, wastewater containing 0.5%-1% of acrylonitrile and 1%-5% of dimethyl sulfoxide enters the acrylonitrile removing tower and is subjected to acrylonitrile removal through pressure reduction for separated treatment, tower bottom solution wastewater is subjected to water removal through pressure reduction in the dimethyl sulfoxide concentrating tower and the crude product tower, the content of dimethyl sulfoxide is up to 99%, the dimethyl sulfoxide is subjected to pressure-reducing distillation in the refining tower, and accordingly, dimethyl sulfoxide with the purity higher than 99.97% is obtained. According to the method and the device, the wastewater is subjected to acrylonitrile removal through pressure reduction for separated treatment, the environmental protection treatment problems that the wastewater containing acrylonitrile is difficult to degrade, the treatment cost is high and the like are solved, distillation extraction and high-purity refining recovery of low-concentration dimethyl sulfoxide in the wastewater are realized synchronously, the technological process is simple, the resource recovery efficiency is high, the purity of recovered dimethyl sulfoxide is high, and the wastewater treatment cost is greatly reduced.

Description

technical field [0001] The invention relates to a process method for the separation, quality and resource utilization of production wastewater in the field of new carbon fiber materials, and is suitable for the separation, quality and environmental protection treatment of dimethyl sulfoxide-acrylonitrile ternary organic waste water and the resource utilization of dimethyl sulfoxide. Background technique [0002] Carbon fiber is a new material with excellent mechanical properties. It is widely used in aviation, aerospace, construction, sports, automobile, medical and other fields, and has become a hot spot for research and development in the domestic new material industry. At present, domestic carbon fiber enterprises mostly use dimethyl sulfoxide one-step wet spinning process for raw silk preparation. In the production process of polyacrylonitrile carbon fiber precursors, especially the one-step production process of dimethyl sulfoxide, the production process mainly produces...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/04C07C317/04C07C315/06C02F103/38
Inventor 蒋元力吕春祥魏慧卿李永红王俊峰张黎明李志鹏王翔魏一忠姚冬王勇赵宇飞王永国
Owner HENAN YONGMEI CARBON FIBER
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products