Rail-type replacement method for cyclone separators in two devices of catalytic cracking unit

Abstract

The invention discloses a rail-type replacement method for cyclone separators in two devices (a regenerator and a reaction settler) of a catalytic cracking unit. According to a traditional method, thecyclone separators are hoisted out of the two devices by utilizing the connection force of reversible chains, and the connection force of the reversible chains has the defects of much manual and mechanical operation, long operation time in containers, high construction risk and difficulty in ensuring quality and safety. According to the rail-type replacement method, an annular guide rail and single-rail pulleys are combined in use to form a cyclone separator rail-type replacement tool, convenience and quickness are achieved, the device replacement efficiency is improved, the construction safety is greatly improved, the construction risk is small, the operation environment is improved, the health of workers and the construction quality are guaranteed, and the method is suitable for mounting large, medium and small cyclone separators in the two devices and other accessories.

Description

technical field [0001] The invention relates to the technical field of refining and chemical plant construction, in particular to a method for orbital replacement of cyclone separators in two vessels of a catalytic cracking plant. Background technique [0002] In the oil refinery, the core equipment of the catalytic cracking unit includes the regenerator and the reaction settler (referred to as the two devices), and the installation of the cyclone separator in the two devices is a key and difficult point in the field of petroleum refining and chemical installation. All of them are assembled in the cylinder of the two devices for installation. Catalytic cracking process is a process to improve the processing depth of crude oil and lighten heavy oil. The catalytic cracking unit is composed of three major parts, namely reaction-regeneration system, fractionation system and absorption stabilization system. Among them, the reaction-regeneration system is the core of the whole d...

AI Technical Summary

Problems solved by technology

The traditional method is to lift the cyclone separator out of the two devices by using the inverted link force. The disadvantage of the inverted link force is that there are many manual mechanical operations, long working time in the container, high construction risk, and difficult to guarantee quality and safety. The process is all high-altitude operations, and scaffolding needs to be repeatedly erected and coordinated, which poses a high safety risk and a long construction period

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