Improved intermittent bulk propylene polymerizing production process and sectional propylene polymerizing production process
A technology of propylene polymerization and production method, applied in the direction of coating, etc., can solve the problems of difficult accurate measurement, high energy consumption, time-consuming preparation of masterbatch, etc., and achieve the effect of eliminating activity
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Embodiment 1
[0102] Improved batch bulk production process such as image 3 Shown:
[0103] The addition method of the three doses has changed, as described below:
[0104] Catalyst preparation and dosing
[0105] The catalyst is preferably dispersed in a mixture of 30% white oil and 70% petrolatum before being added to the reactor. The white oil and petrolatum mixture is prepared separately and preferably kept at 70°C to maintain the liquid phase. For accurate metering, it is best to prepare a 10% catalyst suspension and pump it into the polymerization tank through the catalyst diaphragm metering pump 24 . The proportion of catalyst suspension and propylene added is adjusted according to the purity of propylene, the amount of pure catalyst in the catalyst suspension and the requirements for the variety and quality of polypropylene products.
[0106] Preparation and quantitative addition of the third component
[0107] Preferably, 5% of the mixture of the third component and white oil...
Embodiment 2
[0113] As in the improved batch bulk production process described in Example 1, the catalyst can be dispersed in a mixture of 25% white oil and 75% vaseline before being added to the reactor. A white oil and petrolatum mixture was prepared separately and kept at 65°C to maintain a liquid phase. It can be prepared as a 5% catalyst suspension and pumped into the polymerization tank through the catalyst diaphragm metering pump 24 .
[0114] White oil and the mixture of the third component and white oil can adopt 2% proportioning.
[0115] Other implementation steps remain unchanged.
Embodiment 3
[0117] As in the improved batch bulk production process described in Example 1, the catalyst can be dispersed in a mixture of 35% white oil and 65% petrolatum before being added to the reactor. White oil and petrolatum mixtures were prepared separately and kept at 70°C to maintain the liquid phase. It can be prepared as a 20% catalyst suspension and pumped into the polymerization tank through the catalyst diaphragm metering pump 24 .
[0118] White oil and the mixture of the third component and white oil can adopt 30% proportioning.
[0119] Other implementation steps remain unchanged.
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Abstract
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