Showing papers on "Integrated gasification combined cycle published in 2013"
TL;DR: In this paper, a thermodynamics cycle power generation system was proposed based on coal and supercritical water gasification and multi-staged steam turbine reheated by hydrogen combustion, which is characterized by its high coal-electricity efficiency, zero net CO2 emission and no pollutants.
210 citations
TL;DR: In this paper, a global perspective about the producer gas final composition dependence, the so-called syngas, from the biomass, oxidizer, reactor type, temperature and pressure is given based on a literature benchmarking.
209 citations
TL;DR: NET Power has developed a novel oxy-fuel thermodynamic power cycle that uses hydrocarbon fuels, captures 100% of atmospheric emissions, including all carbon dioxide, and has a cost of electricity that is highly competitive with the best current systems that do not have CO2 capture.
186 citations
TL;DR: In this paper, two methods of gasification are developed for the gasification of various feedstock, these are plasma gasification and conventional air gasification, these two methods are based on non-stoichiometric Gibbs energy minimization approach.
152 citations
TL;DR: In this article, the authors presented complete life cycle modeling and a comparative assessment of current clean coal power generation technologies in China, including a state-of-the-art commercial ultra super-critical system.
133 citations
TL;DR: In this paper, the main types and the operating conditions of entrained-flow gasifiers and coal properties used in IGCC plants are reviewed, and coal ash properties and operating conditions impacting slag behavior are discussed.
Abstract: In the entrained-flow gasifiers used in integrated gasification combined cycle (IGCC) plants, the majority of mineral matter transforms to liquid slag on the wall of the gasifier and flows out the bottom. However, a small fraction of the mineral matter is entrained (as fly ash) with the raw syngas out of the gasifier to downstream processing. This molten/sticky fly ash could cause fouling of the syngas cooler. To improve gasification availability through better design and operation of the gasification process, a better understanding of slag behavior and the characteristics of the slagging process is needed. Char/ash properties, gas compositions in the gasifier, the gasifier wall structure, fluid dynamics, and plant operating conditions (mainly temperature and oxygen/carbon ratio) all affect slagging behavior. Because coal has varying ash content and composition, different operating conditions are required to maintain the slag flow and limit problems downstream. In Part I, we review the main types and the operating conditions of entrained-flow gasifiers and coal properties used in IGCC plants; we identify and discuss the key coal ash properties and the operating conditions impacting slag behavior; finally, we summarize the coal quality criteria and the operating conditions in entrained-flow gasifiers. In Part II, we discuss the constitutive modeling related to the rheological studies of slag flow.
125 citations
TL;DR: In this article, the performance of SEWGS (Sorption Enhanced Water Gas Shift), an innovative system for CO2 capture, applied to a coal-fuelled Integrated Gasification Combined Cycle (IGCC), is investigated.
109 citations
TL;DR: In this paper, the authors present exergy and economic analyses of two advanced fossil fuel power plants configurations: an integrated gasification combined cycle with advanced H2 and O2 membrane separation including CO2 sequestration (Adv. IGFC-CCS) and an integrated gaseous fuel cell cycle with a catalytic gasifier and a pressurized solid oxide fuel cell including CO 2 sequestration.
106 citations
TL;DR: In this paper, a comparative review of CO2 dissociation technology for syngas production is presented, assuming that electricity is produced by a low carbon emitting (renewable or nuclear) power plant.
Abstract: Coal gasification and natural gas reforming are regarded as mature technologies for syngas production. These technologies are however highly polluting in terms of greenhouse gas emissions, mainly carbon dioxide. Natural gas reforming is considered cleaner than coal gasification but has some disadvantages in terms of higher plant maintenance and processing costs. It utilizes catalysts that are prone to poisoning, are costly, and require regular regeneration. In mitigation of these issues, plasma-based CO2 dissociation technologies could probably offer a new alternative for syngas production. The plasma-based technologies are more compact, have faster response and reaction times, and are relatively cheaper compared to conventional gasification and reforming. Assuming that electricity is produced by a low carbon emitting (renewable or nuclear) power plant, a comparative review of CO2 dissociation technology for syngas production shows that CO2 dissociation can be competitive from an environmental point of vi...
101 citations
TL;DR: Multifaceted chemical characterization by XRD, Raman spectroscopy, petrology, FE-SEM/EDS, and HR-TEM/SEAD/FFT/EDs provided an in-depth understanding of coal gasification ash-forming processes.
93 citations
TL;DR: Several decarbonised polygeneration schemes exploiting carbon capture and storage (CCS) or CO reuse technologies for the generation of clean fuels, chemicals, electricity and heat have been systematically analyzed for techno-economic feasibility.
TL;DR: In this article, the experimental results of a self-design pressurized CaO sorption enhanced sawdust gasification in a self designed pressurized fluidized bed gasifier are presented.
TL;DR: In this paper, a detailed thermodynamic analysis has been carried out of large-scale coal gasification-based power plant cycles with near zero CO2 emissions, integrated with chemical looping combustion (CLC).
TL;DR: In this article, a thermodynamic analysis of two air-blown IGCC systems, the first with cold fuel gas clean-up and the second with hot fuel gas cleaning, both with a state-of-the-art combustion turbine as topping cycle, shows that it is possible to obtain a really attractive net efficiency (more than 51%) for the second system, with significant improvements in comparison with the first system.
TL;DR: In this article, the thermodynamic performance of air-blown IGCC systems with post-combustion CO2 capture by chemical absorption was investigated in order to evaluate two different strategies of coal-derived gas clean-up.
TL;DR: In this article, a reduced order model (ROM) for the Shell-Prenflo gasifier family is presented, which takes around 1min in a typical desktop or laptop computer, hence enabling the integration of the gasifier model and the overall power plant flowsheet simulation.
TL;DR: In this article, the authors investigated the performance of SEWGS (Sorption Enhanced Water Gas Shift), an innovative reactor for CO 2 capture, applied to an integrated gasification combined cycle (IGCC).
TL;DR: In this article, the influence of selected factors, including porous properties, tetrahydrofuran (THF) concentration, sodium dodecyl sulfate (SDS) concentration and initial pressure, of the operation system on hydrate phase equilibria, gas consumption, and gas separation are experimentally investigated by a designed orthogonal test method.
Abstract: Hydrate-based gas separation is one of the potential methods of carbon dioxide capture from fuel gases (CO2/H2) for an integrated coal gasification combined cycle (IGCC) power plant. In this study, the influences of selected factors, including porous properties, tetrahydrofuran (THF) concentration, sodium dodecyl sulfate (SDS) concentration, and initial pressure, of the operation system on hydrate phase equilibria, gas consumption, and gas separation are experimentally investigated by a designed orthogonal test method. It is found that the porous property is the most important factor on hydrate phase equilibria and CO2 gas separation, where the gas separation becomes better in silica gel. The presence of THF moderates the hydrate phase equilibrium and improves the gas consumption and CO2 gas recovery, and 3 mol % THF should be a suitable value for gas separation. The initial pressure has an important effect on the hydrate equilibrium pressure. With the increase of the driving force, the gas consumption in...
TL;DR: The Calcium Looping Process (CLP) as mentioned in this paper was developed to facilitate carbon dioxide (CO2) capture during the production of hydrogen (H2) from syngas.
TL;DR: In this article, the main results of a comparison between ultra supercritical pulverized coal combustion (USC) and integrated gasification combined cycle (IGCC) plants are presented.
TL;DR: In this paper, the results from an experimental study on the energy conversion efficiency of producing hydrogen enriched syngas through uncatalyzed steam biomass gasification were presented, where wood pellets were used to produce syngass.
TL;DR: In this paper, the authors assessed the needs for cooling water and construction materials of pulverised coal combustion (PF), integrated gasification combined cycle (IGCC) and natural gas combined cycle power generation technologies with and without CCS (Carbon capture and storage).
TL;DR: In this article, particles in coal gasification gas were sampled and analyzed in detail to determine their particle size distributions and elemental compositions, and they were confirmed to have bimodal peaks in their particle sizes distributions.
TL;DR: In this article, an economic evaluation of co-electrolysis of CO2/H2O at high temperature to produce syngas (H2 and CO mixture), used for fuels elaboration or ethanol production was performed.
TL;DR: In this article, the effect of biomass co-firing on gasification based hydrogen production supply chain, with carbon dioxide capture and storage, from technical, economical and environmental point of view is assessed.
Abstract: Hydrogen is an energy carrier that represents a possible clean fuel of the future. This paper assesses the effect of biomass co-firing on gasification based hydrogen production supply chain, with carbon dioxide capture and storage, from technical, economical and environmental point of view. Several cases consisting of various feedstocks to the gasification reactor are investigated (coal only and coal in mixture with sawdust or wheat straw). Considered plant concepts generate between 330 and 460 MW hydrogen of 99.99% (vol.) purity. First a performance analysis regarding the energy efficiency of the process, the syngas composition and the carbon dioxide capture rate is carried out. The simulations are made using chemical process simulation software Aspen Plus. Second, total capital investment and operating costs for the gasification plant are evaluated. Finally, using the results from Aspen Plus simulations and the cost estimations, a discrete event model is developed, to address hydrogen production supply chain analysis under demand variability, with Arena software. The implications of biomass co-firing on the system are evaluated in terms of: hydrogen amount sold and hydrogen amount stored (MW), hydrogen lost sales amount (MW), partial sales percent and gasification plant profit. The results show that as the biomass quantity in the feedstock increases the hydrogen production rate decreases by 9–28% for sawdust, respectively by 7–23% for wheat straw. The energy efficiency of the process and the gasification plant profit also decrease, but the CO 2 emissions are lower for the cases of biomass co-firing.
TL;DR: In this paper, a new sorbent called ALKASORB + with a high capacity resulting in cost of CO 2 avoided for the IGCC application of €23. This is a reduction of almost 40% compared to the Selexol capture case.
01 May 2013
TL;DR: In this paper, the authors proposed that reducing greenhouse gas emissions from gas-fired processes is very essential for most of the countries in the world and that natural gas is expected to make up a significant proportion of the future global energy mix.
Abstract: Natural gas is expected to make up a significant proportion of the future global energy mix. Therefore, reducing greenhouse gas emissions from gas-fired processes is very essential for most countri...
TL;DR: In this paper, several novel polygeneration systems are presented which convert natural gas, coal, and a carbonless heat source such as high-temperature helium to gasoline and diesel.
TL;DR: In this paper, the effects of different coals in the coal gasification process have been investigated and the modes of occurrence of several inorganic coal constituents were shown to have a remarkable effect on the release, e.g. organic and inorganic bound sulphur.
TL;DR: In this article, a novel advanced integrated gasification combined cycle (A-IGCC) for heat integration technology with carbon dioxide (CO 2 ) capture is described, where the exhaust heat from the gas turbine and the steam are used as gasifying agents, providing higher cold gas efficiency.