Simple Functionalization of Asphaltene and Its Application for Efficient Asphaltene Removal
| Autor: | Nam-Sun Nho, Wonbum Pyeon, Jong-Duk Kim, Seonung Choi |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Alkane
chemistry.chemical_classification Ozone Froth treatment Precipitation (chemistry) General Chemical Engineering Energy Engineering and Power Technology 02 engineering and technology 021001 nanoscience & nanotechnology Toluene Pentane chemistry.chemical_compound Boiling point Fuel Technology 020401 chemical engineering Chemical engineering chemistry Organic chemistry 0204 chemical engineering 0210 nano-technology Asphaltene |
| Zdroj: | Energy & Fuels. 30:6991-7000 |
| ISSN: | 1520-5029 0887-0624 |
| DOI: | 10.1021/acs.energyfuels.6b01184 |
| Popis: | Asphaltene, the cheapest fraction of petroleum, was modified into a novel additive in order to facilitate a deasphalting process, such as paraffinic froth treatment. Asphaltene powder was oxidized by ozone, which is more powerful and less harmful to the environment than other oxidants. The ozonized asphaltene was characterized, and the reaction kinetics of ozonation was interpreted by the shrinking core model. Ozonized asphaltene was added to a water/n-pentane/bitumen emulsion to enhance the precipitation of asphaltene. Control of the properties of the precipitate was allowed by adjusting the ozonation degree and dosage of ozonized asphaltene. The removal of asphaltene was enhanced from 40% to a maximum of 70% by adding ozonized asphaltene under the same conditions. The boiling point distribution of deasphaltened oil indicates that a large amount of residue was removed using ozonized asphaltene. The dispersion behavior was checked by measuring the aggregate size in toluene and alkane solution. It was conf... |
| Databáze: | OpenAIRE |
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