The invention discloses a clean-in-place
system for a
distillation device, preparation for a cleaning liquid, and a cleaning method. The clean-in-place
system comprises: the liquid outlet of a dilute alkali preparation unit is respectively connected with the liquid inlet of a first CIP pump and the liquid inlet of a second CIP pump; the liquid outlet of a
citric acid blending unit is respectively connected with the liquid inlet of the first CIP pump and the liquid inlet of the second CIP pump; the liquid outlet of the first CIP pump and the liquid outlet of the second CIP pump are connected with the
distillation device through a cleaning liquid inlet main pipeline; the liquid outlet of the first CIP pump is respectively connected with the dilute alkali preparation unit and the
citric acid blending unit; the
distillation device is respectively connected with the dilute alkali preparation unit and the
citric acid blending unit through a cleaning liquid recycling main pipeline; the distillation device is connected with a process water inlet main pipeline and a process water outlet main pipeline; and the dilute alkali preparation unit and the citric acid blending unit are correspondingly connected with a process water inlet pipeline. The clean-in-place
system provided by the invention solves the technical problem of influences on
mass-transfer and heat-transfer efficiencies due to blockage of the distillation device in the process of preparation of
ethanol by using a conventional
coal-gas biological
fermentation process, and realizes convenient and rapid cleaning in place for the distillation device.