181 research outputs found
CAESAR: SEWGS integration into an IGCC plant
No full textAbstractThis paper investigates the performance of SEWGS (Sorption Enhanced Water Gas Shift), an innovative reactor for CO2 capture, applied to Integrated Gasification Combined Cycle (IGCC). Firstly, two IGCC reference cases based on dry feed slagging Shell gasifier, with and without CO2 capture, are defined. Then, two different integrations of SEWGS are investigated. The first assumes a conventional low-temperature acid gas removal process adopted upstream the SEWGS; this solution shows slight thermodynamic advantages towards the reference case with CO2 capture (higher efficiency of 1% point), but not from lay-out simplification and equipment savings. The second solution assumes a simultaneous CO2 and sulphur separation from the syngas; this results in a net electric efficiency gain over the reference case of about 2 percentage points. Moreover, this solution allows a significant plant simplification and equipment reduction with further advantages from economic point of view, which is not evaluated in this work. This activity is carried out under the FP7 project CAESAR financed by the EU community
CO2 capture in Integrated Gasification Combined Cycle with SEWGS - Part B: Economic assessment
No full textCO2 capture in natural gas combined cycle with SEWGS. Part A: Thermodynamic performances
No full textCO2 capture in integrated gasification combined cycle with SEWGS - Part A: Thermodynamic performances
No full textAnti- and pro-oxidant water soluble activity of Cichorium genus vegetables and effect of thermal treatment
No full textProprietà anti e proossidanti di alimenti vegetali ed influenza dei trattamenti termici su tali proprietà
No full textApplication of sorption enhanced water gas shift for carbon capture in integrated steelworks
No full textAbstractIn integrated steelworks a large fraction of total CO2 is emitted from the power plant, where carbon- rich blast furnace gas (BFG) is burned to produce electricity by means of a steam cycle or a gas-steam combined cycle. The aim of the present paper is to assess the potential of Sorption Enhanced Water Gas Shift (SEWGS) process for CO2 capture from blast furnace gas. Firstly, a reference combined cycle applied to blast furnace steel plant is defined. Mass flow rate and composition of the steel plant off-gas used as fuel in the combined cycle have been derived from a large integrated steel plant. Then, the application of the SEWGS process is investigated and compared to a reference monoethanolamine (MEA)-based post-combustion absorption option. Two different SEWGS plant layouts are proposed together with two different sorbents. SEWGS achieves 85% of CO2 avoided with electric efficiency of 39% with the advanced sorbent
Integration of SEWGS for carbon capture in natural gas combined cycle. Part A: Thermodynamic performances
No full textIntegration of the Ca-Cu Process in Ammonia Production Plants
No full textIn this work, the application of a Ca-Cu process into a state-of-the-art ammonia production plant is assessed through process simulations, aiming at reducing the primary energy needs of the syngas production and purification sections. The proposed process has shown to significantly reduce the specific primary energy consumption, even when accounting for the higher electric consumption in the Ca-Cu process. From an environmental point of view, the proposed process has an inherently high CO2capture efficiency (about 97%). The encouraging thermodynamic performance along with some simplifications in the syngas conditioning process and the ammonia synthesis loop confirms the potential of the Ca-Cu process as a route for syngas generation in ammonia plants. (Figure Presented)
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