Process for recycling of polyolefin synthesis
By using ethane or ethylene as purge gas, the polyolefin synthesis system was improved, solving the thermodynamic limitation problem caused by nitrogen, achieving more efficient hydrocarbon recovery and polymerization reaction, and reducing greenhouse gas emissions and processing costs.
CN122422367APending Publication Date: 2026-07-17EXXONMOBIL RESEARCHK & ENG CO
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- EXXONMOBIL RESEARCHK & ENG CO
- Filing Date
- 2024-12-02
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
In current polyolefin synthesis, nitrogen is used as a purge gas, which leads to thermodynamic limitations, resulting in the loss of unwanted hydrocarbon impurities and combustion emissions, thus reducing the efficiency of the polymerization reaction.
Method used
Using ethane or ethylene as the purge gas, unreacted components are recovered through cooling, compression, and separation steps, reducing nitrogen usage, increasing heat capacity and gas density, and improving the hydrocarbon recovery system.
Benefits of technology
It reduces greenhouse gas emissions, improves polymerization efficiency and production rate, lowers processing costs, and improves hydrocarbon recovery and combustion efficiency.
✦ Generated by Eureka AI based on patent content.
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Abstract
本公开提供将吹扫气排出料流循环的方法。在一些实施方案中，方法包括将乙烯单体引入聚合反应器。使用催化剂进料将催化剂引入聚合反应器。使用载气引入催化剂。在所述催化剂存在下使乙烯单体聚合以产生聚合物产物和未反应的组分料流。将所述聚合物产物与所述未反应的组分料流分离以形成聚合物产物和吹扫气排出料流。所述吹扫气排出料流包括一种或多种未反应的组分。回收聚合物产物，并将吹扫气排出料流循环以与催化剂一起引入聚合反应器。
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