重油催化裂化装置再生器筒体吊装外管式吊耳与内板式吊耳对比

Relative Merits of External Tube Form and Internal Plate Form of Lifting Lugs of Heavy Oil Catalytic Cracking Unit

重油催化裂化装置再生器筒体直径大、重量重,其吊装吊耳应设置为外管式吊耳还是内板式吊耳一直是争论的焦点。结合广西石化、庆阳石化、大庆宏伟炼化三家炼厂再生器吊装工程实际,论证了分别采用这两种吊耳进行吊装的优缺点。在介绍了三家炼厂再生器相关参数及其吊装吊耳形式的基础上,通过对吊装手段用料量、筒体形变量、摘除索具难度等方面的比较,分析了不同形式的吊耳对吊装施工的影响,而后给出了吊装再生器吊耳设置原则:在不考虑吊车能力、索具起重量、手段用料量、焊接量等的情况下,若可以用正式平台摘除索具,则设置内板式吊耳为最优;若不能利用正式平台摘除索具,则设置外管式吊耳为最优。如果遇到吊车能力、索具起重量和工期很敏感的情况,就要通过综合分析,给出适合吊装的吊耳形式。

Heavy oil catalytic cracking unit has big cylinder diameter and large weight, whether its lifting lugs should be designed as external tube form or internal plate form is always in argument. Combimed with the lifting prac- tices of regenerators in Guangxi Petrochemical Refinery, Qingyang Petrochemical Refinery and Daqing Hong- wei Refinery, this paper demonstrates the relative merits of those two kinds of lifting lugs. It analyzes the ef- fect of the two lifting lug forms on lifting operations from the aspects of needed materials amount of tools, cylinder deformation and difficulty of removing rigging. Then lifting lug design principle is put forward as follows： （ 1 ） In the condition of not considering crane and rigging capacity, materials amount of tools and welding work amount, the internal plate form of lifting lug is optimal if removing rigging operation can use formal plat- form; otherwise, the external tube form of lifting lug is optimal. （2） In the condition of sensitive crane and rigging capacities, materials amount of tools and work period, the comprehensive analysis is needed to get suitable lifting lug form.