Solid Catalyst Component for Olefin Polymerization Fine Powder Reduction
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Solution Overview
Problem
Existing solid catalyst components for olefin polymerization contain a high amount of fine powder, leading to clogging and fouling of polymerization devices during the process, which is not satisfactorily addressed by existing solutions.
Innovation Solution
A solid catalyst component for olefin polymerization is developed with a specific binding energy difference of 73.50 to 75.35 eV, containing titanium, magnesium, halogen atoms, and an internal electron donor, produced by a method involving the contact of a titanium halide compound solution with metallic magnesium or a magnesium compound, and further treated with an internal electron donor to reduce fine powder content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional solid catalyst components are used, then polymerization activity is maintained, but fine powder amount is high causing clogging and fouling
Solution Approach 1:
The patent applies parameter changes by controlling the binding energy difference between Ti 2p and O 1s peaks to be 73.50-75.35 eV, and by controlling the A1 parameter (n1/60×d1^0.85) to be 0.3-1.6 during preparation. These parameter optimizations reduce fine powder generation while maintaining catalyst activity, directly addressing the clogging and fouling problem.
Solution Approach 2:
The patent uses composite materials by combining titanium halide compound with magnesium compound and internal electron donor to form a solid catalyst component with specific binding energy characteristics. This composite structure reduces fine powder amount while maintaining polymerization activity, solving the contradiction between activity and fine powder generation.
2Object-affected harmful factors
If internal electron donor is added to reduce fine powder, then clogging is reduced, but polymerization system complexity increases
Solution Approach 1:
The patent applies preliminary action by incorporating the internal electron donor during the catalyst preparation stage rather than adding it during polymerization. The internal electron donor is integrated into the solid catalyst component structure beforehand, which simplifies the polymerization process while still achieving fine powder reduction and clogging prevention.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution significantly reduces the amount of fine powder, thereby minimizing clogging and fouling of polymerization devices, while maintaining high stereoregularity and polymer quality.
Implementation Method 1
bringing a solution containing a titanium halide compound and a solvent into contact with metallic magnesium or a magnesium compound to obtain a slurry containing a solid product
Implementation Method 2
the peak (1) and the peak (2) are within peak components measured by X-ray photoelectron spectroscopy, the peak (1) is obtained by waveform separation of peaks assigned to the 2p orbitals of the titanium atom, and the peak (2) is obtained by waveform separation of peaks assigned to the is orbital of an oxygen atom
Data Source
AI summary
To provide a solid catalyst component for olefin polymerization having a small amount of fine powder. A solid catalyst component for olefin polymerization containing a titanium atom, a magnesium atom, a halogen atom, and an internal electron donor. The solid catalyst component has an absolute difference in binding energy of 73.50 to 75.35 eV between a peak (1) with the binding energy of 457.00 to 459.00 eV and a peak (2) with the binding energy of 532.50 to 534.50 eV. The peak (1) and the peak (2) are within peak components measured by X-ray photoelectron spectroscopy, the peak (1) is obtained by waveform separation of peaks assigned to the 2p orbitals of the titanium atom, and the peak (2) is obtained by waveform separation of peaks assigned to the is orbital of an oxygen atom.