Acetic acid rectifying tower with built-in condenser and built-in reboiler

Abstract

The invention discloses an acetic acid rectifying tower with a built-in condenser and a built-in reboiler. The acetic acid rectifying tower comprises a tower body, wherein the tower body is internallyprovided with the reboiler and the condenser in sequence from bottom to top; a condenser main body is a cylindrical tank body of which the inner part is fully filled with cooling water; a steam pipeline is spirally distributed in the cylindrical tank body from bottom to top; the steam pipeline is provided with a gas-phase outlet which is located at the middle part of an upper end plate of the cylindrical tank body; the steam pipeline is provided with a plurality of gas-phase inlets; multiple liquid-phase return pipes are arranged at the periphery of the cylindrical tank body; the upper end plate of the cylindrical tank body is provided with upper end openings of the liquid-phase return pipes, and low end openings of the liquid-phase return pipes are communicated with the tower body underthe condenser; automatic opening and closing sealing blocks are arranged on the lower end openings of the liquid-phase return pipes. According to the acetic acid rectifying tower disclosed by the invention, the whole space is saved, and the reaction cycling time is reduced.

Description

technical field [0001] The invention relates to the field of acetic acid preparation equipment, in particular to an acetic acid rectification tower with built-in condenser and reboiler. Background technique [0002] The acetic acid rectification tower is used for the rectification of acetic acid. By using the property of the different vapor pressures of the components in the feed mixture, the low boiling matter (acetic acid) in the liquid phase is transferred to the gas phase, while the high boiling matter in the gas phase is The substance is transferred to the liquid phase to achieve the purpose of separation. [0003] The condenser is used to lower the temperature of the rising low boilers with insufficient purity, turn them into liquids and return them to the tower, and then fall to continue the reaction. The reboiler is used to re-vaporize the liquid falling to the bottom of the tower to form a high-temperature gas, which returns to the tower and rises to continue to re...

AI Technical Summary

Problems solved by technology

The condenser and reboiler of the conventional acetic acid distillation tower are outside the tower, occupying a large amount of installation space, the reaction cycle time is long, and the efficiency is relatively low

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