非对称结构脱硫塔拆除方案对比研究

Comparative study of demolition scheme of asymmetric structure desulfurization tower

为了探索拆除非对称结构脱硫塔的合理方案,对塔体拆除常见的机械拆除和爆破拆除进行了比较、分析。机械拆除是将脱硫塔分为3部分拆除,对每一段的拆除条件和各项参数进行计算,最后进行稳定性验算,确定临界破坏条件;爆破拆除是利用ANSYS/LS-DYNA模拟软件对脱硫塔的整个爆破倒塌过程进行数值模拟,根据第1主应力分析塔体倒塌状态和应力变化,论证爆破方法的可行性。比较和分析的结果是,机械拆除和爆破拆除均可用,根据内蒙古霍林格勒市霍煤鸿骏铝电有限责任公司厂区内的烟气脱硫塔拆除的情况,确定选用机械拆除。为类似工程施工方法的选取提供了经验和参考价值。

In order to explore a reasonable plan to demolish the asymmetric structure desulfurization tower,the common mechanical demolition and blasting demolition of the tower body removal are compared and analyzed.Mechanical demolition is to divide the desulfurization tower into 3 parts,calculate the removal conditions and parameters of each section,and finally carry out stability check and determine the critical failure conditions;the blasting demolition is to use the ANSYS/LS-DYNA simulation software to the desulfurization tower.The whole blasting collapse process is numerically simulated.The collapse state and stress change of the tower body are analyzed according to the first principal stress,and the feasibility of the blasting method is demonstrated.The results of the comparison and analysis are that both mechanical demolition and blasting demolition are available.According to the demolition of the flue gas desulfurization tower in the plant area of Huojun Hongjun Aluminum Electric Co.,Ltd.,Hollingrad,Inner Mongolia,the mechanical demolition is selected.It provides experience and reference value for the selection of similar engineering construction methods.