Abstract:

New chemical cleaning method for quench system is introduced against the traditional cleaning method. From the perspectives of cleaning time, cleaning effect, waste water and oil generation and cleaning method, the traditional cleaning method and two chemical cleaning methods are compared and analyzed. The experience in chemical cleaning process evaluation, precautions, acceptance criteria and other aspects are summarized, and the shutdown time and economic loss of ethylene plant that can be reduced by chemical cleaning are calculated.

Key words:  ')">

 , quench system, overhaul maintenance, chemical cleaning