Issue |
OCL
Volume 13, Number 1, Janvier-Février 2006
|
|
---|---|---|
Page(s) | 5 - 8 | |
Section | Filière | |
DOI | https://doi.org/10.1051/ocl.2006.3333 | |
Published online | 15 January 2006 |
Caractérisation des co-produits du raffinage valorisation énergétique*
De Smet Ballestra, c/o M. Lambert, resp. environnement, Da Vincilaan 2, boîte G1, B – 1935
ZaventemZaventem, Belgique
+32 2 716 11 09
Abstract
A cost effective alternative to the existing treatment steps of the refining by-ptoducts, is the “on site” energetical valorization through 2 comparable technologies: thermal oxidation and anaerobic digestion combined with boiler. In a thermal multifluid oxidizer Cinclus®, the mixture is injected with atomisation and combustion air at high velocity into the oxidation chamber. The jet creates a local under-pressure and thus an internal recirculation in the oxidation chamber. This results in a controlled and homogeneous temperature and residence profile that ensure an optimal combustion with low emissions. To prevent persistent boiler fouling, the gases are cooled to below 750 °C in the gas conditioning chamber by mixing the hot gases with recycled gases taken from behind the de-dusting device. Divert investment for fossil fuel boiler and soap stock splitting to install Cinclus soap stock boiler will allow: no acid waste water, no interphase, no sulfuric acid consumption, no fossil fuel consumption. The Dranco process is a well-known and reliable anaerobic digestion technology. Its simple digester design, no moving parts within the digester, provides a high reliability and low maintenance costs. The Dranco process parameters are roughly: digester loading: 10 to 20 kg COD/m3 reactor.day. The temperature range of the thermophilic organisms is 50 to 58 °C. The retention time in the digester is about 15 to 30 days. The biogas production is above 300 m3 of biogas per ton of waste. The electricity production: above 500 kWh per ton of waste. The advantages of anaerobic digestion of waste are: The production of renewable energy and reduction of fossil CO2-emissions ; the low odour emissions and in general low emissions towards the environment.
Key words: energetical valorization / refining by-products / thermal oxidation / anaerobic digestion
© John Libbey Eurotext 2006
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.