Trimethyl orthoacetate continuous distillation equipment and distillation technology thereof

Abstract

The invention relates to trimethyl orthoacetate continuous distillation equipment and a distillation technology thereof, and belongs to the technical field of the trimethyl orthoacetate continuous distillation equipment and the distillation technology thereof. The continuous distillation equipment comprises a first-level distillation device, a second-level distillation device and a third-level distillation device which are in series connection with one another, wherein the first-level distillation device comprises a first-level separation tower; first-level separation tower reboilers are communicated with the bottom of the first-level separation tower; first-level separation tower circulation pumps are mounted on a circulation pipeline I between the first-level separation tower and the first-level separation tower reboilers; the circulation pipeline I is communicated with the second-level distillation device; a discharging pipeline at the top of the first-level separation tower is communicated with a first-level separation tower condenser; the first-level separation tower condenser is communicated with a first-level separation tower receiving tank; the discharge opening of the first-level separation tower receiving tank is communicated with the first-level separation tower through a pipeline; first-level separation tower reflux pumps and a branch pipeline which is communicated with a low-boiling-point substance storing tank are mounted on the pipeline. The continuous distillation equipment is small in occupied area, low in energy consumption, simple and convenient to operate, high in distillation purity and less in environmental pollution.

Description

technical field [0001] The invention relates to a trimethyl orthoacetate continuous rectification equipment and a rectification process thereof, and belongs to the technical field of trimethyl orthoacetate continuous rectification equipment and a rectification process thereof. Background technique [0002] After the synthesis of trimethyl orthoacetate is completed, the purpose of purification must be achieved by rectification. The traditional rectification adopts the still-type rectification method, using 3000L or 5000L glass-lined equipment or stainless steel equipment to heat through the jacket to carry out product purification. Separation, clean up the distillation pot after this batch of separation, and then feed the material for the next batch of rectification. This rectification method mainly has the following defects: it requires continuous heating and cooling of materials, and huge energy waste. Due to the large number of fractions, the operation is difficult Large,...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the technical problems of large floor area, high energy consumption, difficult operation, and large environmental pollution in the above-mentioned prior art, and to provide a small floor area, low energy consumption, easy operation, and precise operation. Trimethyl orthoacetate continuous distillation equipment and its distillation process with high distillation purity and less environmental pollution

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