Convenient disassembling and assembling process for furnace tube of ethylene cracking furnace

Abstract

The invention discloses a convenient disassembling and assembling process for a furnace tube of an ethylene cracking furnace. The convenient disassembling and assembling process comprises the following steps: disassembling a steel-structure bottom plate and a ceramic fiber blanket; manufacturing a simple trolley track and two trolleys; disassembling an old furnace tube in a radiation chamber; mounting an electric hoist; mounting a new furnace tube in the radiation chamber; and re-mounting the steel-structure bottom plate. The convenient disassembling and assembling process breaks through conventional thinking, in combination with actual conditions of a site, the steel-structure bottom plate of the radiation chamber of the cracking furnace is opened, site resources are utilized, the self-made track trolleys are applied, a chain block and the electric hoist are adopted to quickly and effectively complete disassembling, transporting and mounting work of the furnace tube of the ethylene cracking furnace, and the problem of chain block transferring of the furnace tube in a hearth is solved effectively; and the self-made track trolleys quickly transport a new furnace tube set to a mounting position, and the new furnace tube set is directly and vertically hoisted, so that secondary transferring frequency is reduced. According to the convenient disassembling and assembling process, theelectric hoist is utilized to mount the new furnace tube set, thus, the problem that a furnace tube is slowly mounted in a conventional method is solved, use of manpower and the chain block is reduced, a large number of crane machine shifts are saved, and the working efficiency and economic benefits are improved.

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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