Abstract: The technological process and character of solvents extraction separation system of self-designed for coal tar, which can extract coal tar 10 kg per pot, were introduced. The separation effectiveness of 14 ring aromatic hydrocarbons from coal tar was examed. The tests show that 14 ring aromatics can be completely extracted from coal tar by 56 times operation using equivalent ethanol for industrial use as extraction solvent, obtaining coal tar pitch with soften point as high as 110 ℃. The extraction is inferred to be the diffusion controlling process. The correlation coefficient of the concentration of the main compounds in extraction phase and residua are accorded with the hyperbola equations of y=a+b/x.
Technology of solvents extraction separation system of processing 10 kg coal tar per pot
Abstract:
The technological process and character of solvents extraction separation system of self-designed for coal tar, which can extract coal tar 10 kg per pot, were introduced. The separation effectiveness of 14 ring aromatic hydrocarbons from coal tar was examed. The tests show that 14 ring aromatics can be completely extracted from coal tar by 56 times operation using equivalent ethanol for industrial use as extraction solvent, obtaining coal tar pitch with soften point as high as 110 ℃. The extraction is inferred to be the diffusion controlling process. The correlation coefficient of the concentration of the main compounds in extraction phase and residua are accorded with the hyperbola equations of y=a+b/x.