【Haichuan Chemical Salary News】: Inauguration ceremony held for Hengli Petrochemical (Dalian)’s 1.5 million-ton ethylene and polypropylene plant!
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Recently, the polypropylene unit of Hengli Petrochemical (Dalian) Chemical Co., Ltd.’s 1.5 million-ton ethylene project held its commissioning ceremony! The 2 sets of polypropylene plants with a capacity of 200,000 tons per year include: TEAL units, raw material purification units, flare and condensate units, polymerization units, purification and degassing units, membrane recovery units, extrusion granulation units, mixing and conveying units, washing and packaging units, as well as utility systems such as machine rooms, substations, and underground pipeline networks. The project is scheduled to complete the main framework construction by December 31 of this year, with all installations ready for commissioning by November 31, 2019. At present, the project is under intense construction.
What kind of unit is the TEAL unit?
Tail gas recovery system in the polypropylene production process.
It is quite difficult to complete the main framework structure within 2 months, and it gets very cold on Changxing Island by December. Use these 2 months to complete as many underground works as possible (equipment foundations, foundations for buildings/structures, main utility pipes), in order to create the conditions for intensive work after March next year.
Catalyst storage unit: It is said that organoaluminum compounds react when exposed to air
In polypropylene plants, TEAL is triethylaluminum, also abbreviated as T2.
I think it’s impossible; they’re once again bringing up the scheduled deadline from the project planning stage. Given the current weather conditions in Dalian, if no measures are taken, the quality of the concrete will be terrible
From the description, it seems that construction had already started before the commencement ceremony? Why is the opening ceremony being delayed? Incomplete drawings? Incomplete information? Or some other reason? ----------------------------------------------
Ziegler-Natta catalyst: an organometallic catalyst. It is composed of titanium tetrachloride and triethylaluminum. It was invented around 1953 by K. Ziegler and G. Natta, who were awarded the Nobel Prize in Chemistry in 1963 for this achievement. It is suitable for the catalytic polymerization of ethylene at atmospheric pressure, and the resulting polyethylene features good stereoregularity, high density, and high crystallinity.