Organic Waste Gasification by Detonation-Born Ultrasuperheated Steam
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  • Release Date: 2022-01-29
  • organic waste gasification
  • detonation gun
  • ultrasuperheated steam
Video Introduction

This video is adapted from 10.3390/fuels2040033

This video demonstrates the operation of innovative organic waste gasification plant utilizing ultrasuperheated steam (USS) as a gasifying agent. The details of plant operation are given in []. Briefly, the plant includes a spherical vortex reactor, a pulsed USS detonation gun split into two branch tubes, a feeder of liquid or granulated solid waste, an outlet for removing gasification products (high-quality syngas), and reactor cooling and control systems. The plant operates as follows. The feedstock in the form of liquid or granulated solid particles is supplied continuously or cyclically by the feeder to the branch tubes. The pulsed USS gun periodically generates supersonic jets of USS supplied through the branch tubes into the vortex reactor. The mass flow rate of feedstock provided by the feeder and the frequency of issuing USS jets must be such as to ensure the injection of the supplied feedstock into the reactor during the time between two successive detonation shots. Feedstock particles under the action of USS jets enter the vortex reactor and are drawn into the vortex motion formed in the reactor due to the interaction of counter USS jets coming from two opposite branch tubes. The vortex motion in the reactor ensures the formation of stable high-temperature (above 2000 °C) zones in the central region far from the reactor walls, while the wall temperature remains low, but above the steam condensation temperature, which is provided by the reactor cooling system. The stability of the high-temperature zones is maintained by the periodic injection of USS supersonic jets. Feedstock particles involved in the vortex movement, circulate in the reactor, periodically entering the high-temperature zones, where they are gasified under the action of USS in the absence of O2. Complex organic compounds present in feedstock are completely thermally decomposed, gasified, and converted into the syngas containing primarily H2 and CO, whereas Cl, S, F, and N containing compounds are transformed to simplest by-products like hydrogen chlorides, sulfides, fluorides, and nitrides (HCl, H2S, HF, NH3), while inorganic compounds are converted into the simplest oxides and salts. Periodic intense shock waves accompanying the injection of USS supersonic jets prevent the agglomeration of feedstock particles. The pressure in the reactor is kept slightly above the atmospheric pressure to avoid suction of atmospheric air. The gasification products continuously outflow from the reactor for subsequent condensation of some little residual steam saturated with acids, and further utilization of the produced syngas. The quality of produced syngas depends on the operation frequency of the detonation gun. The plant prototype is assembled in the 20ft shipping container and has a capacity of 100 kg feedstock per hour. It operates on produced syngas-oxygen mixture diluted by low-temperature steam (up to 40%), while natural gas is used as a starting fuel. In the video, all produced syngas is combusted in the outlet burner. The gasification plant is made of conventional non-heat resistant materials and can be readily scaled-up to achieve much higher capacities.

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Frolov, S. Organic Waste Gasification by Detonation-Born Ultrasuperheated Steam. Encyclopedia. Available online: https://encyclopedia.pub/video/video_detail/192 (accessed on 15 April 2024).
Frolov S. Organic Waste Gasification by Detonation-Born Ultrasuperheated Steam. Encyclopedia. Available at: https://encyclopedia.pub/video/video_detail/192. Accessed April 15, 2024.
Frolov, Sergey. "Organic Waste Gasification by Detonation-Born Ultrasuperheated Steam" Encyclopedia, https://encyclopedia.pub/video/video_detail/192 (accessed April 15, 2024).
Frolov, S. (2022, January 29). Organic Waste Gasification by Detonation-Born Ultrasuperheated Steam. In Encyclopedia. https://encyclopedia.pub/video/video_detail/192
Frolov, Sergey. "Organic Waste Gasification by Detonation-Born Ultrasuperheated Steam." Encyclopedia. Web. 29 January, 2022.