The defects of forging technology of upper head of 1200mm ureasynthesis tower were analysized, and it was thought that the inter defect was loosen.
分析了尿素塔上封头体锻造工艺存在的缺陷，认为疏松是造成缺陷的原因。
2
The thesis adopted the high efficiency wave tray to reconstruct the tradition tray of ureasynthesis column, which has strengthened heat and mass transfer.
本文采用高效的波形塔板对传统的尿素合成塔进行改造，加强了尿素合成塔内的传热与传质。
3
The leak detection in ureasynthesis reactor was an important link for safety moving. As there're many infactions, the steam detection was not suitable for the need of leak detection.