Processing process for ketene dimer rectification residue

Abstract

The invention discloses a process for processing diketene rectification residues, which is characterized in that the process comprises the following steps: (1) diluting the diketene rectification residues, hydrolyzing the diluted residues, cooling and recovering the tail gas of the hydrolysis process; (2) recovering acetone in the hydrolytic solution; (3) mixing condensate of the step (1) with acetone recovered in the step (2), mixing with the hydrolytic residues in the step (1) at a ratio and dissolving; and (4) combusting the mixture and emitting without pollution. The process can effectively recover chemical components in the tail gas to prevent the air pollution caused by organic solvents such as acetone, etc. The residues are combusted fully to generate CO2 and water to achieve non-pollution emission, thereby meeting the environmental protection requirements and achieving high social value.

Description

technical field [0001] The invention relates to a treatment process for diketene distillation residue, which belongs to the technical field of chemical industry. Background technique [0002] The existing method for treating diketene distillation residue is direct incineration, which has a high risk factor and great pollution, and wastes diketene and acetic anhydride in the recyclables. Patent No. 200610085796.0, the residue is hydrolyzed to effectively recover the active ingredients in the residue. Although a cooling device is used in the hydrolysis process, acetone cannot be recovered effectively. The volatile acetone is accompanied by the generated CO 2 Discharge together, and the residue after hydrolysis is treated as solid waste, which wastes resources and pollutes the environment. Contents of the invention [0003] In order to overcome the deficiencies of the existing technology, the purpose of this paper is to provide a diketene rectification residue treatment proc...

AI Technical Summary

Problems solved by technology

[0002] The existing treatment method for diketene distillation residue is direct incineration, which has a high risk factor and high pollution, and wastes diketene and acetic anhydride in the recyclables

Patent No. 200610085796.0, the residue is hydrolyzed to effectively recover the active ingredients in the residue. Although a cooling device is used in the hydrolysis process, acetone cannot be recovered effectively. The volatile acetone is accompanied by the generated CO 2 Discharge together, and the residue after hydrolysis is treated as solid waste, which wastes resources and pollutes the environment

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