| 摘要 |
PURPOSE: A fractional distillation device for quaternary elements equipped with an internal heat exchanging distilling column is provided to improve energy efficiency by easily manipulating columns. CONSTITUTION: A fractional distillation device for quaternary elements equipped with an internal heat exchanging distilling column includes a first column, a second column, and a third column. The columns are successively arranged. The second column is composed of a second upper column and a second lower column. Raw materials based on quaternary elements are supplied into the upper side of the second upper column. The second upper column is in connection with the second lower column. A plurality of internal pipes(10, 20, 30, 40, 50) is embedded in the second upper column and the second lower column.
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