Possible reasons for the high aromatic content in the raffinate oil and corresponding solutions

2015-10-26View Original

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Reasons: (1) Excessively high temperature at the bottom of the extraction distillation tower; (2) Too low solvent ratio； ? (3) Low temperature of the poor solvent ； ? (4) Excessively high water content in the poor solvent ； ? (5) High aromatic content in the poor solvent ； ?? (6) The feed composition changes rapidly. Solutions: 1) Reduce the temperature at the bottom of the EDC tower. 2) Increase the solvent feed ratio. 3) Adjust the solvent feed temperature. 4) If the water content in the poor solvent is too high, lower the temperature at the bottom of the EDC tower. 5) Adjust the operation of the SRC tower to reduce the aromatic content in the lean solvent. 6) Increase the solvent ratio when feeding material with a high aromatic content.

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Possible reasons for the high aromatic content in the raffinate oil and corresponding solutions

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