Fundamental study of ultra clean, high efficiency combustion system with integrated mass and Heat recirculations

研究人员提出并研究了一种超清洁（无CO2，NOx，SOx），高效的燃烧和气化系统，该系统使用低质量的燃料，如煤或生物质。将质热循环结合起来，提出了一种新的燃烧气化系统概念。从实验和理论两方面研究了NOx和SOx排放的急剧降低机理。具有热再循环的意想不到的高温场和具有质量再循环的全新反应场，CO2的量如此之大以至于其可以容易地液化，NOx浓度由于还原反应而降低，并且SOx浓度由于脱硫剂的分解减少而降低。此外，气化过程进行了研究。由于热循环实现的高温场，富氢气化被证明是可能的，这是未来氢基能源系统中最有前途的生物质利用技术之一。

The investigators has proposed and studied a ultra clean (CO2, NOx, SOx free), high efficiency combustion and gasification system that uses low quality fuels such as coal or biomass. By integrating the mass and heat recirculation, a new concept of combustion and gasification system has been proposed. The drastic reduction mechanisms of NOx and SOx emission are investigated both experimentally and theoretically. An unexpectedly high temperature field with heat recirculation and a totally new reaction field with mass recirculation, the amount of CO2 is so large that it can be easily liquefied, the NOx concentration is decreased due to the reduction reaction, and the SOx concentration is decreased due to the decreased decomposition of desulfurizer. Also, the gasification process has been investigated. Due to the high temperature field realized with the heat recirculation, the hidrogen-rich gasification is shown to be possible , which is one of the most promising utilization technology of biomass for future hydrogen -based energy systems.