Abstract:

 This paper introduces the methanol cleaning of cold box during the overhaul of the 1.0 Mt/a ethylene plant at SINOPEC SABIC Tianjin Petrochemical Co., Ltd. in 2016. By summarizing the principle of NO_X causing danger, the development of methanol cleaning scheme, the treatment of process system and the quality control of cleaning, some corresponding measures are formulated against the problems emerged in the cleaning, thus ensuring the smooth completion of the methanol cleaning of cold box.

Key words:  ')">

 , cold box, methanol cleaning, nitrogen oxide/NO_X