A novel concurrent process for CO₂ reduction and plastic upcycling was successfully developed based on a rotating gliding arc plasma process, where CO₂ gas and Low-density polyethylene (LDPE) powder were used as reactants for the process. Herein, the LDPE powder was regarded as an alternative of plastic waste, and the high temperature of the plasma jet thermochemically decomposed the plastic powder. Based on gas chromatography analyses, the yields of the C1 and C2 chemicals were confirmed, which demonstrated the possibility for the chemical upcycling of the plastic powder with CO₂ plasma jet. At the same time, the conversion of CO₂ at the exhaust gas increased with increasing electric power of the plasma jet. In addition, as the electric power further enhanced, the reverse reactions were efficiently suppressed by the chemical quenching process due to complete depletion of the oxygen by the light hydrocarbon gases generated from the pyrolysis of the plastic powder. Based on the molecular balance of C and O, the calculated syngas to CO₂ ratio was achieved up to 32 % in a batch-type plasma reactor with a power supply of 1170 W. It is rational inference that the efficiency will be significantly improved if a plug-in type plasma reactor with higher power supply is implemented. In conclusion, this novel concurrent process would be a promising approach for an efficient and scalable technology of CO₂ utilization.

基于旋转滑动电弧等离子体工艺，成功开发了一种用于 CO ₂还原和塑料升级回收的新型并行工艺，其中 CO ₂气体和低密度聚乙烯 (LDPE) 粉末用作该工艺的反应物。在这里，低密度聚乙烯粉末被认为是塑料废料的替代品，等离子体射流的高温使塑料粉末发生热化学分解。基于气相色谱分析，确认了 C1 和 C2 化学品的产率，这证明了使用 CO ₂等离子射流对塑料粉末进行化学升级的可能性。同时，CO ₂的转化随着等离子射流电功率的增加，排气量也随之增加。此外，随着电力的进一步增强，由于塑料粉末热解产生的轻烃气体完全耗尽氧气，化学淬火过程有效地抑制了逆反应。根据 C 和 O 的分子平衡，在功率为 1170 W 的间歇式等离子体反应器中，计算的合成气与 CO _{2 的}比率达到了 32 %。可以合理推断，如果实现了更高功率的插入式等离子体反应器。总之，这种新颖的并发过程将是一种有效且可扩展的 CO ₂利用技术的有前途的方法。