米桑油田天然气处理项目塔架式烟囱吊装技术

Hoisting technique of tower frame type chimney in Missan Oilfield natural gas treatment project

伊拉克米桑油田天然气处理项目硫磺回收单元尾气烟囱为塔架式结构,是天然气处理项目中最高的设备,也是项目关键性控制工程。塔架高76.2 m,总质量136 t,烟囱高80 m,带衬里总质量177 t。针对塔架式烟囱质量大、高且易变形、作业场地狭窄等施工难点,吊装方案采用"双机抬吊、单机溜尾"分段吊装和空中组对的吊装工艺,重点对地面组装、场地处理、吊耳选择及索具受力计算、吊装流程规划、吊机技术参数、吊装过程精度等工序重点控制,烟囱按计划顺利吊装就位并一次验收成功,对在中东地区类似大型吊装管理具有指导意义。

In the sulfur removal unit of Natural Gas Plant of Missan Oilfield in Iraq, the tail gas chimney with tower frame is the highest and key equipment of the natural gas processing project. The tower frame height is 76.2 m and has the mass of 136 t. The chimney has the total mass of 177 t with lining and the height of 80 m. Aimed at the construction difficulties such as heavy and high chimney, high and yielding tower frame and limited operation site, the segmented hoisting process with double cranes lifting and single crane tailing as well as the aerial assembly process were adopted. The key control processing focused on ground assembly, foundation treatment, form of hoisting ear and calculation of rigging, hoisting process, crane technical parameters, etc., which made hoisting construction reach the primary rate of 100% in precisely positioning. This technique has certain reference value to other relevant projects in Middle East area.