On August 24, the polypropylene workshop of Maoming Petrochemical Chemical Co., Ltd. officially began to overhaul. In this overhaul, the polypropylene workshop arranged the work reasonably, and carefully arranged the maintenance process, with the principle of 'no gas, no oil landing', in the bag filter S301 During the overhaul process, the internal fine powder was successfully deactivated, and there was no smoke in the whole process.
There are 160 filter elements inside the bag filter S301, which are covered with thick fine powder with triethyl aluminum. In order to ensure the safety of inspection, all the internal triethyl aluminum must be inactivated, which is very difficult. In the past, it was inactivated. In the process, there will always be smoke in the tank. In order to reduce the amount of smoke, the speed of deactivation has to be slowed down, which not only affects the progress of the inspection, but also brings problems to the safety and environmental protection work. To completely solve this phenomenon, the workshop technician Luo Yongjian Take the initiative to undertake the deactivation of the bag filter.
'This time, in addition to using the previous carbon dioxide inactivation, I intend to inactivate the 5% oxygen and nitrogen in the tank. ' After comparing the data of the previous several inactivations and the analysis with the process team 2. Discussion, Luo Yongjian determined the final inactivation plan.
Since the bag filter thermometer is located in the middle of the tank, it cannot accurately reflect the temperature inside the tank during the deactivation process. Therefore, Luo Yongjian has been observing the top of S301, measuring the temperature of the tank top every half hour, and constantly adjusting according to the temperature change. The amount of oxygen and nitrogen added should not only ensure that the tank does not overheat and smoke, but also ensure the deactivation speed, so that the equipment can be checked and repaired regularly.
At this time, it was raining for three days. In the high altitude of 60 meters, Luo Yongjian did not relax for a moment, strictly controlled the temperature and pressure inside the tank, until the deactivation was completed, no smoke appeared in the whole process, and the device was first realized. Inactivation of smoke provides a favorable guarantee for 'safe, high quality, green' overhaul.