This work proposed a pyrolysis chemical looping reforming‐two stage regeneration (PCLR‐TR) process with carbon‐negative syngas and biochar poly‐generation，aimed at overcoming challenges in chemical looping gasification. The process effectively separates pyrolysis and reforming, circumventing slow solid–solid reactions and enabling the flexible adjustment of the H2/CO ratio. The two‐stage regeneration ensures improved synchronization of reaction rates across different reactors. The results indicate that manipulation of process parameters allows for flexible adjustment of the H2/CO ratio in syngas (ranging from 1.02 to 3.83). The introduction of CO2 feed in the first stage regeneration reactor reduces the oxygen carrier exothermic intensity in the second stage regeneration reactor by 58%. Optimization results suggest that the generated syngas is compatible with diverse downstream applications, exhibiting a maximum CO2 negative emission of 1.85 kg/kg syngas. The PCLR‐TR system offers a versatile and environmentally friendly solution for the energy and chemical industries.

中文翻译：

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通过新型化学循环方法实现负碳合成气和生物炭多联产的灵活策略


这项工作提出了一种利用负碳合成气和生物炭多联产的热解化学循环重整-两阶段再生（PCLR-TR）工艺，旨在克服化学循环气化中的挑战。该工艺有效地将热解和重整分开，避免了缓慢的固-固反应，并能够灵活调节H 2 /CO 比率。两级再生确保改善不同反应器之间反应速率的同步。结果表明，工艺参数的操纵可以灵活调整 H 2合成气中的 /CO 比率（范围为 1.02 至 3.83）。一氧化碳的引入2第一级再生反应器中的进料使第二级再生反应器中载氧体放热强度降低了58%。优化结果表明，生成的合成气与多种下游应用兼容，表现出最大的 CO 2合成气负排放量为1.85 kg/kg。 PCLR-TR 系统为能源和化工行业提供了多功能且环保的解决方案。