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

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