Daqing Petrochemical Plastic Factory has three production lines of low-voltage equipment, of which the A line to produce low-pressure high-density polyethylene resin HDPE-5000S mainly run this production line running for 31 years 'Bao Dao' is not old, this year's production run a new success.
As of October 23, the cumulative production of 63,000 tons of HDPE-5000S products, continuous safe operation of 225 days.
Low-voltage devices are many rotating equipment, are used more than 30 years of equipment, a few years ago due to the device running time is long, the equipment is aging, some technical bottlenecks seriously restrict the long-term stability of the device running, to bring the risk to the production control. Personnel to domestic similar devices field trips, scientific demonstration, the use of major maintenance opportunities for technological innovation, so that the old device glow youth.
For the mother liquor line 'embolism' problem, technicians will be the mother liquor line heat tracing from the heat pipe steam to steam tube heating, the mother liquor line is heated evenly, no pipeline plugged, and then affect the follow-up section temperature, liquid level fluctuations Phenomenon, staff control is also more convenient. Granulation section bag filter for the overall update, the use of the cycle from the original six months to three years.
From extensive to fine, from free to science, rely on the plant's 'Self-examination self-change as the main content' of the localization management, to achieve no unmanaged, no unmanaged matter. Technician's inspection, respectively, from the breadth and depth of the two-level control device operation. Coupled with the weekly joint inspection of the various professional, on-site pulse, ask a doctor, done a three-dimensional, full coverage this year technicians in the inspection process , Access control room DCS operation screen, we have found that the D-223 tank level and the mother liquor meter failure, the operation signal false instructions to avoid the occurrence of two accidents.
Since the beginning of this year, with the cracking of two sets of equipment (E2), the three sets of devices are kept in line and the supply of ethylene is sufficient.While the plastic factory did a good job of optimizing the product, it tried to eat as much ethylene as possible without causing unplanned stoppages Upstream ethylene plant down or stop the first eight months of production of 747,000 tons of polyethylene products, a record new record, which is mainly due to the layout of the plant in advance, see the pin, flexible and efficient maintenance, processing device exists Problems, hidden dangers, bottlenecks, devices light, high-load production.
It is reported that, for the pressure of ethylene tank storage, low-voltage device A line implementation of a 'lightning' overhaul. Maintenance time of only 6 hours, replace the belt centrifuge, polymerization reactor blender filling grease, pelletizing section replacement pelletizer head , From pre-polymerization system to the post-granulation section, the key crew are to check it again, the project is not due to a short time discounted.
'The guarantee of overhaul of this' hot work' is based on the fact that previous cold work such as preparation of maintenance plans and preparation of materials is in place without any omission due to the coordination of various disciplines. "Zhang Xilai, director of the Low-Pressure Workshop, said.