A convenient disassembly and assembly process for the furnace tube of ethylene cracking furnace

Abstract

The invention discloses a convenient disassembly and assembly process for the furnace tube of an ethylene cracking furnace, which includes removing the steel structure bottom plate and ceramic fiber blanket, making a simple trolley track and two trolleys, removing the old furnace tube in the radiation room, installing an electric hoist, and installing a new one in the radiation room. Furnace tube, re-installation of steel structure floor and other steps. The present invention breaks through the conventional thinking, combines with the actual situation of the site, by opening the steel structure floor of the cracking furnace radiation chamber, using the site resources, using the self-made track trolley, adopting the reverse chain and the electric hoist to quickly and effectively complete the dismantling and transportation of the ethylene cracking furnace tube And the installation work effectively solved the problem of the furnace tubes being reversed in the furnace. The new furnace tube group was quickly transported to the installation location by a self-made rail trolley, and it was directly hoisted vertically to reduce the secondary transportation. The invention uses an electric hoist to install a new furnace tube group, which solves the problem of slow installation of the furnace tube in the traditional method, reduces labor and the use of reverse chains, saves a large number of crane shifts, and improves work efficiency and economic benefits.

Description

technical field [0001] The invention relates to a process for disassembling and assembling a furnace tube, in particular to a process for conveniently disassembling and assembling a furnace tube of an ethylene cracking furnace. Background technique [0002] Due to the long-term high-temperature environment of the furnace tube of the ethylene cracking furnace, the furnace tube is prone to failure phenomena such as bending, erosion and thinning, and carburization. Every time the ethylene cracking unit is overhauled, it is necessary to replace the furnace tube. The maintenance period of ethylene cracking unit is short and the task is heavy. If the replacement work of the furnace tube cannot be completed in a limited time with quality and quantity, the start-up and production of the device will be seriously affected, resulting in greater economic losses. [0003] The furnace tubes of the ethylene cracking furnace are installed vertically in a radiant chamber. The schematic di...

AI Technical Summary

Problems solved by technology

Disadvantages of this disassembly method: 1. The furnace tube is hoisted by a crane, and the internal rewinding chain needs to be reversed many times, which is cumbersome and low in work efficiency; 2. The installation of the furnace tube is slow, and the crane is always on standby to cooperate. , the economic benefits are poor; 3. The furnace tube installation period is long, and it is often used as a key line of the device. There is little time left for the subsequent removal of the scaffolding and restoration of the ceramic fiber blanket lining, and a large amount of manpower is required

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