Abstract

Using highly superheated steam (HSS) with a temperature of above 2000 K for oxygen-free gasification/detoxification of industrial, municipal, and toxic waste, the organic component of waste can be completely converted to syngas or power gas. It was proposed for the first time to produce such HSS by cyclic detonation of stoichiometric ternary mixtures fuel–oxygen–steam at a near-atmospheric initial pressure and to feed it into a cooled flow-type spherical reactor as supersonic countercurrent two-phase jets together with finely divided waste particles. Three-dimensional gas-dynamic calculations showed that the cyclic feed of supersonic jets into the reactor gives rise to intense vortex zones of high-temperature HSS. Waste particles repeatedly enter into these vortex zones and are gasified or heat-treated, and the shock waves accompanying the feed of the supersonic jets prevent particle agglomeration. In the quasi-stationary operation process, a small overpressure is maintained in the reactor (to prevent the suction of atmospheric air), and the median mean residence time of the particles is sufficient for their complete gasification.

中文翻译：

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高度过热蒸汽的废物气化反应器

摘要

使用温度超过2000 K的高度过热蒸汽（HSS）进行工业，市政和有毒废物的无氧气化/解毒，可以将废物的有机成分完全转化为合成气或动力气。首次提出通过在接近大气压的初始压力下通过化学计量三元混合物燃料-氧气-蒸汽的循环爆轰来生产这种高速钢，并将其作为超音速逆流两相射流一起送入冷却的流型球形反应器中带有细碎的废物颗粒。三维气体动力学计算表明，超音速射流的循环进料会引起高温高速钢的强烈涡流区。废物颗粒反复进入这些涡流区并被气化或热处理，超音速喷射流伴随的冲击波可防止粒子团聚。在准静态操作过程中，反应器中保持较小的超压（以防止吸入大气），并且颗粒的中值平均停留时间足以使其完全气化。