Circumferential falling film distillation tower

Abstract

The invention discloses a circumferential falling film distillation tower, comprising a tower body, a shunt mechanism and an insulation mechanism. The shunt mechanism is installed in the tower body, the insulation mechanism is installed on the outside of the tower body, the upper end of the tower body is provided with a feed pipe, the lower end of the tower body is provided with a discharge pipe,and the external of the discharge pipe is provided with a control valve; the shunt mechanism comprises a shunt plate, a limit plate and a reset spring; the limit plate is installed in the internal position of the power body, and the reset spring is installed between the limit plate and the shunt plate; the insulation mechanism comprises a coiled tube, a heating bin and a booster pump; and one endof the heating bin is connected with the booster pump through a pipeline, and the output end and the input end of the heating bin are respectively connected with the two ends of the coiled tube. The distillation tower has the advantages that the feed of the tower body can be shunted rapidly, the insulation effect of the tower body is good through the insulation mechanism set up, and the influenceof the large temperature difference between the inside and outside of the tower body and the loss of heat in the tower on the distillation work is avoided.

Description

technical field [0001] The invention relates to the technical field of rectification towers, in particular to a surrounding falling film rectification tower. Background technique [0002] The rectification tower is a tower-type vapor-liquid contact device for rectification. The difference in volatility of each component in the mixture, that is, the vapor pressure of each component at the same temperature, is used to make the light components in the liquid phase different. The components are transferred to the gas phase, and the heavy components in the gas phase are transferred to the liquid phase, so as to achieve the purpose of separation. [0003] The prior art has the following deficiencies: when the traditional rectifying tower is in use, the liquid usually directly enters the inside of the tower body, so it is easy to cause uneven liquid distribution, resulting in incomplete rectification work, increasing the cost of rectification, and the traditional rectification towe...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a surrounding falling film rectification tower to solve the problem of incomplete rectification work due to the uneven distribution of liquid in the tower and the large temperature difference between the inside and outside of the tower and the loss of heat in the tower. The work is very easy to cause problems such as influence

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