Cluster rectification device

Abstract

The invention discloses a cluster rectification device which comprises a tower kettle, a plurality of rectification heads and a plurality of collecting/metering grooves, wherein the tower kettle is provided with a feed inlet, a gas-phase discharge outlet and a residual material outlet and comprises a second pipe; the gas-phase discharge outlet of the tower kettle is connected in parallel and communicated with a plurality of small-bore cluster rectification towers by a cluster rectification disc distribution platform, and the other end of each cluster rectification tower is respectively communicated with the rectification heads; each rectification head is provided with a condenser, and an air outlet of the rectification head is communicated with a first pipe communicated with a vacuum system; an air outlet of each collecting/metering groove is respectively communicated with the first pipe, and liquid inlets of the collecting/metering grooves are converged on the second pipe; each rectification head is provided with a return pipe communicated with the top of the rectification head, and the return pipes are respectively communicated with the second pipe; the rectification head is also provided with a synchronous multi-backflow distribution controller for controlling return ratio; and a rectification-tower thermal-insulating layer is arranged outside each cluster rectification tower, and the middle part of the cluster rectification tower is provided with a rectification-tower packing layer. The device disclosed by the invention can lower the tower height and reduce the production cost, and has the characteristic of low energy consumption.

Description

technical field [0001] The invention relates to a set of rectification system equipment, in particular to a cluster rectification device, which can be used in organic chemical industry, product purification in fine chemical industry or solvent recovery in production process. Background technique [0002] At present, the rectification tower rectification device produced by traditional rectification is a multi-section serial rectification single-tower process, and its tower diameter increases with the increase of the evaporation area of ​​the tower kettle. After the tower diameter is larger, the gas phase and liquid phase in the tower The phase exchange situation is getting worse and worse, so a redistributor is designed at the junction of the tower section to improve the gas phase and liquid phase exchange conditions. However, there is still a big gap between small-scale production and large-scale production. The separation effect obtained by the tower height of 1.0 meters is...

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Problems solved by technology

[0002] At present, the rectification tower rectification device produced by traditional rectification is a multi-section series rectification single-tower process flow, and its tower diameter increases with the increase of the evaporation area of ​​the tower kettle. After the tower diameter is larger, the gas phase and liquid phase in the tower The phase exchange situation is getting worse and worse, so a redistributor is designed at the junction of the tower section to improve the gas phase and liquid phase exchange conditions. However, there is still a large gap between small-scale production and large-scale production. The separation effect obtained by the tower height of 1.0 meters is enlarged to industrial production, and the tower height of 10 meters can solve the problem, and the investment cost is high.

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