Current and Future Technologies for Gasification-Based Power Generation, Volume 2: A Pathway Study Focused on Carbon Capture Advanced Power Systems R&amp;D Using Bituminous Coal, Revision 1

Gray, David; Plunkett, John; Salerno, Salvatore; White, Charles W.; Tomlinson, G.; Gerdes, Kristin

doi:10.2172/1505815

Cited by 6 publications

(1 citation statement)

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“…However, the efficiency of traditional coal power plants, such as subcritical and supercritical power plants, are largely affected by the addition of CO 2 capture . Therefore, advanced technologies such as the integrated gasification combined cycle (IGCC) have been developed over the years that yield higher efficiencies in comparison to the traditional power plants and offer near-zero emission power generation by allowing capture and sequestration of CO 2 . , In an IGCC plant, the coal is converted via a gasification process into syngas that is rich in hydrogen (H 2 ) and carbon monoxide (CO). The syngas, treated in a sour water gas shift (WGS) process, produces valuable H 2 , removable CO 2 by hydrolysis of unwanted CO, and removable hydrogen sulfide (H 2 S) by hydrolysis of the harmful sulfur compounds such as carbonyl sulfide (COS).…”

Section: Introductionmentioning

confidence: 99%

Data Reconciliation and Dynamic Modeling of a Sour Water Gas Shift Reactor

Mobed

Maddala

Rengaswamy

et al. 2014

Ind. Eng. Chem. Res.

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Integrated gasification combined cycle (IGCC) plants with CO 2 capture have strong potential in the future carbon-constrained world. In these plants, the CO 2 and COS content of the syngas at the inlet of the acid gas removal process should be within certain limits in order to satisfy the environmental limits on sulfur and CO 2 emissions. To satisfy these constraints, the syngas from the gasification process is passed through water gas shift reactor(s). A premium is placed on sulfurtolerant catalysts since the syngas may contain COS and H 2 S. In comparison to the sweet-shift process, the sour-shift process results in higher overall efficiency because of the higher temperature of the feed syngas and requirement of less additional steam for the shift reactions. The optimal operating conditions and the dimensions of the sour shift reactors can be obtained by considering the effect of a number of key variables. With this motivation, a 1-D mathematical model of a sour water gas shift (WGS) reactor has been developed by considering mass, momentum, and energy conservation equations. The experimental data available in the open literature are reconciled for measurement errors after gross errors are removed and then used to obtain the rate parameters. Subsequently, the developed model is used to study the performance of the WGS reactor as part of an IGCC plant with CO 2 capture. The results presented in this paper are very useful in designing, analyzing, and operating the sour water gas shift reactors.

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Section: Introductionmentioning

confidence: 99%

Data Reconciliation and Dynamic Modeling of a Sour Water Gas Shift Reactor

Mobed

Maddala

Rengaswamy

et al. 2014

Ind. Eng. Chem. Res.

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Thermo‐Economic Analysis of a Novel Power System Including Medical‐Waste Plasma Gasification, SOFC, Biomass‐Fired Power Generation, and CCS

Chen

et al. 2023

Energy Tech

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For environmentally friendly treatment and efficient utilization of medical waste, a coupling of medical‐waste‐based plasma gasification, fuel‐cell power generation, and biomass power is implemented, and carbon capture and storage (CCS) unit is integrated to achieve low carbon emissions. The clean syngas obtained from the plasma gasification of medical waste is first utilized by the fuel cell and drives a gas turbine to produce power after supplementary combustion. The exhaust gas is used to heat the feed stream of the biomass power station. CCS unit is heated by exhaust gases and the extracted steam from the biomass power station, and the thermal energy of the pressurized carbon dioxide is recovered. Thermodynamic and economic analyses are conducted to examine the project's performance based on a 1.00 kg s−1 plasma gasifier and a 34 MW biomass power station. The analysis indicates that medical‐waste‐generation energy and exergy efficiency reaches 35.10% and 33.58%. CO2 of 59.84 kilotons can be fixed and sequestered yearly. The initial investment in the project can be recovered in 5.95 years, with a net present value of 44.72 M$. It is shown in the conclusions that the project is advantageous and beneficial in medical‐waste utilization.

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