Method for disassembling and assembling internal components of large chemical tower

Abstract

The invention relates to a method for disassembling and assembling internal components of a large chemical tower. The disassembling and assembling method comprises the following steps of S1, erecting a scaffold and an operation platform on the outer side of a tower body; S2, opening a manhole, and carrying out gas detection on the interior of the tower body; S3, sequentially dismantling the components in the tower body, carrying the components to an operation platform, and hoisting and lowering the components to the ground by using a crane; S4, when a fourth tower tray layer is removed, mounting two auxiliary frames on a tower tray supporting ring in the tower body, mounting rope ladders on the auxiliary frames, and allowing a person to go down to the tower tray layer through the rope ladders to sequentially remove components in the tower body; S5, mounting an electric hoist in a channel opening; S6, mounting a sliding rail, a pulley and a traction rope; S7, binding the end part of the component with a traction rope, and enabling the component to penetrate out of the manhole by utilizing an electric hoist and a pulley; and S8, completing component dismantling, and conducting inspection and acceptance. The method has the effects of enlarging the operation space and improving the construction efficiency.

Description

technical field [0001] This application relates to the field of removal and installation of tower components, in particular to a method for disassembly and assembly of internal components of a large chemical tower. Background technique [0002] Removal of tower internal components is a routine maintenance item for petroleum and chemical plants. In order to facilitate the operation of construction personnel during maintenance, the design of tower equipment needs to consider manholes, tray spacing, channel plate settings, and bolt structures. However, there is a type of chemical tower, such as the xylene tower, because of its stable process and clean medium, it is seldom overhauled. The design considers the process performance more than the maintenance performance. This kind of tower is generally very tall. Components need to be replaced, which is extremely difficult. [0003] The Chinese patent with the notification number CN211342745U discloses a petrochemical tower that is...

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Problems solved by technology

[0005] In order to improve the problem that when construction workers climb on the side wall of the tower body, the operating space for disassembling and assembling the tower internal components is limited, which affects the disassembly and assembly efficiency. This application provides a method for disassembling and assembling the internal components of a large chemical tower.

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