It has been found out that the major culprits for the corrosion cracking are the concentration of harmful ions from caustic wash and material settlement and residue tension strain.
装置堿洗、物料沉积导致有害离子浓缩及设备存在残余拉应力是造成腐蚀开裂的主要原因。
The main production facilities are mixing device, reactor, air cooler, water scrubber, caustic wash tower, compressing machine, condensate cooler, dissociator and distillating column and so on.
Optimization of caustic wash process, strengthened monitoring of critical equipment or application of duplex stainless steel or super stainless steel can mitigate the cracking problems.