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In the 100-day campaign to create benefits, Guangzhou Petrochemical's cracking unit has been market-oriented and has achieved remarkable results in continuous optimization of tackling key problems and increasing propylene production
.
The cracking unit continuously optimizes the cracking depth according to the change of raw materials, based on SPYRO calculation, combined with the actual production, and corrects the calculation results according to the content of alkynes in the C2 hydrogenation inlet and the flow rate of circulating ethane, so as to find the best cracking conditions and implement
.
To increase propylene production, it is not only necessary to optimize the cracking depth, but also to increase the feed amount
.
In order to reduce the loss of propylene in the reactor of the propylene tower, the installation personnel have taken measures such as increasing the temperature of the quench water, appropriately reducing the reflux ratio of the propylene tower, increasing the temperature of the sensitive plate of the propylene tower, and accurately controlling the purity of the propylene product in the side line.
Since this year, the loss of propylene in the kettle of the propylene tower has decreased.
1.
25%
.
At the beginning of this year, the top condenser E1555A/B of the propylene tower had internal leakage successively.
The installation personnel first recovered the liquid-phase propylene in the heat exchanger and then emptied and replaced it.
In response to the problem of excessive opening of the propylene tank sampling flare valve, The installation personnel and the laboratory analysis personnel work together to formulate measures to reduce the loss of propylene by adopting a small flow replacement method for each sampling
.
Through the implementation of a series of key measures, in June, the daily output of propylene in the cracking unit reached 283.
5 tons, an average of 8.
1 tons per day compared with May, setting a new high for the average daily output of propylene under the “NAP+LNAP” feeding mode of the cracking furnace
.
