Raw material recycling of biomass with the VEBA OEL pyrolysis and gasification processes
- VEBA OEL Technologie, Gelsenkirchen-Horst (Germany)
From the early days of the VEBA OEL refineries originate the upgrading processes for liquid and pasty refinery residues. For treatment of residues or biomass these processes have a special importance because in comparison to combustion they are characterised by low pollutant loads and efficient energy conversion as well as high reliability when handling difficult residues. These processes are: 1. Pyrolysis of particularly heterogenous materials, such as biomass or composting residues. 2. Gasification or inertising of inorganic component, alternatively in conjunction with pyrolysis arranged upstream as a thermal pretreatment. A special feature of these processes with environmental policy relevance is the possibility of the raw material utilisation of the synthesis gases in the chemical or refinery industries. If due to the selection of location, raw material utilisation is not applicable, however, the conversion of the synthesis gases into electricity in a combined cycle unit is possible. What is significant in the process path pyrolysis, gasification and cogeneration is the high electric efficiency achievable. The high efficiency of pyrolysis and gasification is based on the conversion of the residues or biomass into high-energy intermediate products and linking with a co-generation process. In the first step, intermediate products are obtained by means of pyrolysis with condensation of the low-temperature carbonisation vapours which are characterised by their storability and grindability. In the second process step the intermediate pyrolysis products are fed to an entrained flow gasification unit operated at a pressure of approx. 20-23 {times} 10{sup 5} Pa which makes it possible to vitrify the inorganic constituents to form a slag difficult to elute and to obtain synthesis gases particularly low in noxious matter. In the final step the gases present under pressure can be passed on to the gas turbines of a progressive cogeneration gas turbine power station.
- OSTI ID:
- 135664
- Report Number(s):
- CONF-9410176-; TRN: 95:006074-0037
- Resource Relation:
- Conference: 6. national bioenergy conference, Reno, NV (United States), 2-6 Oct 1994; Other Information: PBD: 1994; Related Information: Is Part Of Bioenergy `94 using biofuels for a better environment. Technical papers, Volume 1 and Volume 2; Farrell, J.; Sargent, S.; Dwanson, D. [eds.] [and others]; PB: 753 p.
- Country of Publication:
- United States
- Language:
- English
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