Abstract: The present invention discloses a pipeline automatic scale removal and storage device. The device comprises a scale remover, a scale storage device and a coupling; the scale remover is composed of a scale breaking mechanism, a cutting mechanism and a grinding mechanism; a plurality of groups of scale breaking teeth of the scale breaking mechanism can preliminarily break scale on an inner wall of a pipeline; the cutting mechanism cuts and eliminates the scale on the inner wall of the pipeline through a plurality of installed cutting blades; and a plurality of groups of grinding blocks of the grinding mechanism further grind and eliminate the scale on the pipeline; and the scale storage device is used for realizing storage for the scale. The scale storage device is hermetically and movably installed in the pipeline. The device of the present invention can automatically thoroughly eliminate the scale in the pipeline.

Abstract: The present invention discloses a pipeline automatic scale removal and storage device. The device comprises a scale remover, a scale storage device and a coupling; the scale remover is composed of a scale breaking mechanism, a cutting mechanism and a grinding mechanism; a plurality of groups of scale breaking teeth of the scale breaking mechanism can preliminarily break scale on an inner wall of a pipeline; the cutting mechanism cuts and eliminates the scale on the inner wall of the pipeline through a plurality of installed cutting blades; and a plurality of groups of grinding blocks of the grinding mechanism further grind and eliminate the scale on the pipeline; and the scale storage device is used for realizing storage for the scale. The scale storage device is hermetically and movably installed in the pipeline. The device of the present invention can automatically thoroughly eliminate the scale in the pipeline.

Abstract: A process for extractive distillation, including: feeding a solvent to an extractive distillation column via a solvent feeding inlet, wherein the solvent has a feeding temperature 3.5˜22.5° C. higher than a top temperature of the extractive distillation column; feeding a mixture comprising a light component and a heavy component to the extractive distillation column via a mixture feeding inlet, wherein the light and heavy components are according to the volatility after adding the solvent, wherein the mixture is liquid, and the mixture feeding inlet is lower than the solvent feeding inlet; condensing a vapor generated by the mixture in an upper portion of the extractive distillation column to obtain the light component; and separating the solvent in a lower portion of the extractive distillation column to obtain the heavy component.

Abstract: A process for extractive distillation, including: feeding a solvent to an extractive distillation column via a solvent feeding inlet, wherein the solvent has a feeding temperature 3.5-22.5° C. higher than a top temperature of the extractive distillation column; feeding a mixture comprising a light component and a heavy component to the extractive distillation column via a mixture feeding inlet, wherein the mixture is liquid, and the mixture feeding inlet is lower than the solvent feeding inlet; condensing a vapor generated by the mixture in an upper portion of the extractive distillation column to obtain the light component; and separating the solvent in a lower portion of the extractive distillation column to obtain the heavy component.