Autothermal two-stage gasification of low-density waste-derived fuels |
| |
Authors: | Stefan Hamel Holger HasselbachSteffen Weil Wolfgang Krumm |
| |
Affiliation: | Universität Siegen, Institut für Energietechnik, Paul-Bonatz-Str. 9-11, D-57068 Siegen, Germany |
| |
Abstract: | In order to increase the efficiency of waste utilization in thermal conversion processes, pre-treatment is advantageous. With the Herhof Stabilat® process, residual domestic waste is upgraded to waste-derived fuel by means of biological drying and mechanical separation of inerts and metals. The dried and homogenized waste-derived Stabilat® fuel has a relatively high calorific value and contains high volatile matter which makes it suitable for gasification. As a result of extensive mechanical treatment, the Stabilat® produced is of a fluffy appearance with a low density. A two-stage gasifier, based on a parallel-arranged bubbling fluidized bed and a fixed bed reactor, has been developed to convert Stabilat® into hydrogen-rich product gas. This paper focuses on the design and construction of the configured laboratory-scale gasifier and experience with its operation. The processing of low-density fluffy waste-derived fuel using small-scale equipment demands special technical solutions for the core components as well as for the peripheral equipment. These are discussed here. The operating results of Stabilat® gasification are also presented. |
| |
Keywords: | Pyrolysis Combustion Fixed bed Fluidized bed Hydrogen Synthesis gas Fuel feeding |
本文献已被 ScienceDirect 等数据库收录! |
|