In order to decouple the reduction process of Char-NO under pressurized conditions, a pressurized horizontal tube furnace experimental system was used to explore the NO reduction characteristics of pressurized pyrolysis char samples prepared under different conditions (0.3–1.2 MPa, 800–1000°C, 0.3–3.0 s). The research results showed that increasing pyrolysis pressure/temperature/residence time can inhibit the Char-NO characteristics. When the environmental pressure increased, the reduction rate of NO gradually increased. As the reduction time increased, the total reduction of NO and the contents of C(N) structure on the surface of the residual char samples increased, some N-5 structure with poor thermal stability would gradually undergo condensation polymerization to form N-6 and N-Q structures under the high temperature/high pressure conditions. Under the real pressurized conditions, the effect of reducing NO by char samples was the best at 0.6 MPa under real pressurized conditions in the pressure range of 0.3–1.2 MPa.

中文翻译：

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高压下Char-NO还原特性的实验研究

为了解耦加压条件下 Char-NO 的还原过程，采用加压卧式管式炉实验系统，探索了在不同条件下（0.3-1.2 MPa，800-1000°C）制备的加压热解炭样品的 NO 还原特性。 , 0.3–3.0 秒)。研究结果表明，增加热解压力/温度/停留时间可以抑制Char-NO特性。随着环境压力的增加，NO的还原率逐渐增加。随着还原时间的增加，NO的总还原量和残炭样品表面C(N)结构的含量增加，一些热稳定性差的N-5结构会逐渐缩聚形成N-6和NQ结构在高温/高压条件下。