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Sinopec News Network reported that in July, the scrap material produced by the extruder of the 350,000 tons/year polypropylene plant of Zhongke Refining and Chemical was reduced to less than 1 ton, basically achieving the goal of zero production, and optimizing nearly 5 Since the beginning of the month, the efficiency increase is about 750,000 yuan
.
The 350,000-ton/year polypropylene plant extruder is a domestically produced extruder with the largest production capacity.
There are few operating parameters that can be used for reference.
After half a year of operation, the extruder template gradually appears to be blocked, and the average output of debris is about 4 tons per day.
The price of scrap material is only 85% of the official brand product, which brings a large loss of benefit to the device
.
Since the beginning of this year, in order to solve the problem of excessive scrap material in the extruder, Zhongke Refining & Chemical has closely monitored the operation of the unit, actively carried out the party member optimization research activities, through repeated exploration and practice, collected a large amount of operating data, and mapped The cutter speed control curve continuously improves and optimizes the operating parameters of the unit
.
In March, the plant management personnel carefully organized and completed the extruder template and cutter replacement work with high quality.
For polypropylene products with different melt indexes, the temperature of the cylinder and the template was adjusted in time to avoid excessive differences in product fluidity and ensure The stability of the extruder load and the quality of the polymerized product
.
At the same time, under the premise of ensuring that the resin can be quickly cooled and shaped, the particle water flow is gradually reduced, which completely solves the problems of water leakage in the pre-dehydrator and high dryer current, and establishes an extruder debris recording ledger to track data in real time Changes, continuous optimization of operating parameters, to ensure that the debris is minimized