Device and method for recovering organic solvents in flammable explosive high-viscosity polymer waste

A high-viscosity polymer and organic solvent technology, applied in the field of organic solvents, can solve problems such as inability to recover solvents, waste of solvents, and potential safety hazards, and achieve the effects of improving air pollution and excessive sewage, heating uniformly, and reducing pollution

Active Publication Date: 2018-08-28
SINOPEC YIZHENG CHEM FIBER +1
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since more than 90% of this flammable and explosive high-viscosity polymer is an organic solvent, the prior art cannot recycle the solvent in this polymer, but uses a vacuum calciner for calcination to dispose of these waste materials. All the compounds are discharged into the atmosphere and sewage, a large am

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
  • Device and method for recovering organic solvents in flammable explosive high-viscosity polymer waste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1: The production of high-performance fibers requires replacement of components and melt filters every 7 days. There is about 0.25 kg of melt in each component and about 15 kg of melt in each filter. This embodiment is a device for recovering organic solvents in flammable and explosive high-viscosity polymer waste, which can process 50 components and 2 filters each time. The system can process about 42.5 kg of melt in total and recover 80% of the solvent.

[0020] Such as figure 1 As shown, it includes far-infrared furnace, buffer tank, filter, condenser, solvent recovery tank, booster pump, and circulating water tank. Among them, far-infrared furnace, buffer tank, filter, and condenser are connected in sequence, and the condenser is connected to solvent recovery. The tank is connected to the water tank through a vacuum pump, and the side of the water tank has an overflow port. In this embodiment, the vacuum pump is a water ring vacuum pump, which is connected ...

Embodiment 2

[0028] Embodiment 2: roughly the same as Embodiment 1, the difference is that the outer surface of the silicon carbide plate is provided with a refractory brick insulation material with a thickness of 100mm. When the vacuum degree of the system reaches an absolute pressure of 8KPa, the far-infrared furnace starts to heat, and the heating The temperature is set to about 160°C, and the heating time is 10h.

Embodiment 3

[0029] Embodiment 3: roughly the same as Embodiment 1, the difference is that the outer surface of the silicon carbide plate is provided with a rock wool insulation material with a thickness of 400mm. When the vacuum degree of the system reaches an absolute pressure of 15KPa, the far-infrared furnace starts to heat, and the heating The temperature is set to about 180°C, and the heating time is 0.5h.

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

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention discloses a device and a method for recovering organic solvents in flammable explosive high-viscosity polymer waste. A far-infrared furnace, a buffer tank, a filter and a condenser are connected in sequence; the condenser is connected with a solvent recovery tank while connected with a water tank via a vacuum pump; the side surface of the water tank has an overflow port; the heatingelement of the far-infrared furnace is a silicon carbide plate arranged out of the furnace and coated with a far-infrared paint; a far-infrared heating wire is arranged in the silicon carbide plate; and one surface, coated with the far-infrared paint, of the silicon carbide plate clings to the outer wall of the far-infrared furnace. According to the invention, waste slurry blocks and solvents in flammable and explosive materials adhered onto metal surfaces are recovered in a vacuum state by heating and condensing; the far-infrared furnace is employed for heating, so uniform heating in the furnace is realized, local high temperature and open flames do not occur, and the phenomenon of flash explosion is eliminated; the waste slurry blocks and the flammable and explosive melt materials adhered onto metal surfaces are separated under high vacuum and high temperature, and the separated and evaporated flammable and explosive organic solvents are condensed into liquid which is collected for recycling; so spinning solvents can be recycled, raw material consumption is reduced, and production cost is lowered.

Description

technical field [0001] The invention relates to an organic solvent, in particular to a method for recovering the organic solvent. Background technique [0002] The production of high-performance chemical fibers generally uses flammable and explosive organic solvents as raw materials, and is blended into a flammable, explosive, and high-viscosity polymer for spinning. In the production, flammable, explosive, and high-viscosity polymer waste will inevitably be produced. This material adheres to the surface of the metal equipment through which the wire melt passes. Since more than 90% of this flammable and explosive high-viscosity polymer is an organic solvent, the prior art cannot recycle the solvent in this polymer, but uses a vacuum calciner for calcination to dispose of these waste materials. All the compounds are discharged into the atmosphere and sewage, a large amount of solvents are wasted, and even serious environmental pollution is caused. Due to the use of ordinary...

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
IPC IPC(8): B01D5/00B01D50/00F27B14/06F27B14/14B09B3/00B09B5/00
CPCB01D5/00F27B14/06F27B14/14B09B3/00B09B5/00B09B3/40B01D50/20
Inventor 沈云周桂存杨勇张长城张其宝刘锦江沈睿
Owner SINOPEC YIZHENG CHEM FIBER
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap