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

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...

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 amount of solvents are wasted, and even cause serious environmental pollution

Due to the use of ordinary calciners for calcination, open flames exist at high temperatures, and flash explosions often occur during heating and calcination, so there are serious safety hazards in the process of disposing of these wastes

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