Ilmenite ore as an oxygen carrier for pressurized chemical looping reforming: Characterization and process simulation
| Autor: | Omid Ashrafi, Dennis Y. Lu, Zhenkun Sun, Robin W. Hughes, Robert T. Symonds, Philippe Navarri |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
business.industry
020209 energy Boiler feedwater 02 engineering and technology Management Monitoring Policy and Law engineering.material Pollution Industrial and Manufacturing Engineering Steam-assisted gravity drainage General Energy Electricity generation 020401 chemical engineering 0202 electrical engineering electronic engineering information engineering Pinch analysis engineering Environmental science 0204 chemical engineering Process simulation Process engineering business Ilmenite Chemical looping combustion Syngas |
| Zdroj: | International Journal of Greenhouse Gas Control. 81:240-258 |
| ISSN: | 1750-5836 |
| DOI: | 10.1016/j.ijggc.2018.12.006 |
| Popis: | Chemical looping reforming is a promising option for the conversion of gaseous fuels to high quality syngas suitable for gas-to-liquids (GtL) processes. This work evaluates the potential for syngas, heat, power, and steam generation for diluent production at steam assisted gravity drainage (SAGD) facilities using low cost ilmenite ore pressurized chemical looping reforming (PCLR). Preliminary fixed-bed reactor testing on a naturally occurring Canadian ilmenite ore was performed to determine the optimal operating regime for syngas generation. Based on SEM characterization, EDX elemental mapping, XRD, and Mossbauer spectroscopy measurements it was demonstrated that partial reduction to Fe2.5+ and Fe2+ containing species is required to avoid the production of CO2. Additionally, the reduction to Fe° containing species should be minimized to limit the formation of carbon and metal carbides. These results were used to generate material and energy balances via Aspen HYSYS V9 process simulation software of the entire PCLR process for SAGD applications using a Canada’s Oil Sands Innovation Alliance (COSIA) SAGD facility template. Thorough energy integration of the combined PCLR-SAGD process using Pinch Analysis suggests that steam and diluent requirements can be met, with excess power generation, at lower costs than more traditional syngas generation technologies, while meeting CO2 emissions targets and reducing boiler feed water (BFW) make-up. Having shown that process performance is attractive, a techno-economic assessment to establish the most economical design for the PCLR-SAGD process is now required. |
| Databáze: | OpenAIRE |
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