Microwave plasma MCw gasification is an innovative technology for solid waste management due to the advantages it offers. In the operational tests of MCw GASIFIER (TUBITAK–Research Grant Number 115-M-389) MCw plasma carrier is atmospheric air. The conversion of solid granulated particles called as fuel into syngas is modeled by a hybrid transient thermochemical decomposition process sensed by instantaneous measurements of syngas volumetric content and reactor wall temperatures. The critical parameter is gasification duration, tg on which thermodynamic analysis is founded. The generated amount of syngas, msyn, its temperature, Tsyn, molecular weight, Msyn, higher heating value, HHVsyn and calculated msyn based energy Esyn, are the parameters of instantaneous process response governed by tg. Post processed chromatographic analysis of syngas samples for a storage duration of ts; ts < tg gives besides HHVsyn, relative density, RDsyn and Wobbe Index WIsyn under standard laboratory conditions. Syngas volumetric content ratios (H2/CH4 variation with H2 and CO/CO2 variation with CO2) by instantaneous measurements during tg can be used as decomposition monitoring under the severe influence of material characteristics (volatile matter VM, fixed carbon FC, moisture, M) of fuel. Syngas volumetric contents of polyethylene pellets, PP and Turkish Şırnak coal, CTR are not confirming each other in reference to instantaneous measurements and chromatographic analysis. There exists a significant difference between instantaneously measured Esyn and the calculated Esyn using chromatographic analysis data. On the other hand a consistency in terms of normalized molecular weight; Mn = Msyn/Mair and RDsyn is observed. Although it is rather difficult to determine the separate effects of ts/tg and normalized Tn = Tsyn/Tair interactive influence of ts/tg, Tn and the complicated nature of process itself is the estimated fact. It seems that we need both operational instantaneous data and post processing chromatographic data separately. Syngas generation limits and process control are the practical outcomes reached by instantaneous measurements. A common comparison base regarding energy content and characteristics of generated syngas for a particular utility is offered by chromatographic analysis.

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Assessment of MCw Plasma Gasification via Instantaneous Response of Thermochemical Decomposition versus Post Processed Syngas Chromatography

  • Melda Ozdinc Carpinlioglu

摘要

Microwave plasma MCw gasification is an innovative technology for solid waste management due to the advantages it offers. In the operational tests of MCw GASIFIER (TUBITAK–Research Grant Number 115-M-389) MCw plasma carrier is atmospheric air. The conversion of solid granulated particles called as fuel into syngas is modeled by a hybrid transient thermochemical decomposition process sensed by instantaneous measurements of syngas volumetric content and reactor wall temperatures. The critical parameter is gasification duration, tg on which thermodynamic analysis is founded. The generated amount of syngas, msyn, its temperature, Tsyn, molecular weight, Msyn, higher heating value, HHVsyn and calculated msyn based energy Esyn, are the parameters of instantaneous process response governed by tg. Post processed chromatographic analysis of syngas samples for a storage duration of ts; ts < tg gives besides HHVsyn, relative density, RDsyn and Wobbe Index WIsyn under standard laboratory conditions. Syngas volumetric content ratios (H2/CH4 variation with H2 and CO/CO2 variation with CO2) by instantaneous measurements during tg can be used as decomposition monitoring under the severe influence of material characteristics (volatile matter VM, fixed carbon FC, moisture, M) of fuel. Syngas volumetric contents of polyethylene pellets, PP and Turkish Şırnak coal, CTR are not confirming each other in reference to instantaneous measurements and chromatographic analysis. There exists a significant difference between instantaneously measured Esyn and the calculated Esyn using chromatographic analysis data. On the other hand a consistency in terms of normalized molecular weight; Mn = Msyn/Mair and RDsyn is observed. Although it is rather difficult to determine the separate effects of ts/tg and normalized Tn = Tsyn/Tair interactive influence of ts/tg, Tn and the complicated nature of process itself is the estimated fact. It seems that we need both operational instantaneous data and post processing chromatographic data separately. Syngas generation limits and process control are the practical outcomes reached by instantaneous measurements. A common comparison base regarding energy content and characteristics of generated syngas for a particular utility is offered by chromatographic analysis.