Showing papers on "Integrated gasification combined cycle published in 2019"
TL;DR: In this article, a novel integrated supercritical water gasification of coal system with 40t/h throughput of coal and water was designed, and a thermodynamic analysis and a life cycle environmental assessment under different conditions were performed using Aspen Plus 8.4 and SimaPro 9.0 based on the Ecoinvent 3 database.
61 citations
TL;DR: In this paper, pressure-swing adsorption (PSA) cycles were developed based on TDA AMS-19 (activated carbon) adsorbent for pre-combustion CO2 capture in integrated gasification combined cycle (IGCC) power plants.
50 citations
TL;DR: In this paper, a new system integrating BIGCC with CLG is designed for power generation and the simulation of the whole process, including biomass gasification, gas cleaning, heat recovery steam generator (HRSG), and gas/steam turbine, are carried out with Aspen Plus software.
50 citations
TL;DR: In this paper, a review of the state-of-the-art for high-temperature desulfurization of coal gas is presented, which provides inspiration and guidance to develop new cost-effective sorbents.
Abstract: Integrated gasification combined cycle (IGCC) and solid oxide fuel cell (SOFC) systems are considered as the most promising clean coal technologies. Syngas derived from coal gasification is the major fuel sources for IGCC and SOFC power systems; however, large amounts of sulfur compounds, mainly in the form of hydrogen sulfide, are produced during gasification. Hydrogen sulfide has to be removed prior to syngas utilization to protect downstream equipment from high-temperature corrosion. Therefore, hydrogen sulfide removal from raw syngas plays a key role in successful application of IGCC and SOFC systems. Hot coal gas desulfurization using solid sorbents is a more efficient technique for hydrogen sulfide removal, compared with conventional cold coal gas desulfurization with amine solution. This article reviews solid sorbents for high-temperature desulfurization, e.g., transition metal oxides, rare-earth oxides, spinel oxides, perovskite oxides, nanoelemental metals and mesoporous desulfurizers. Composite oxides that combine the properties of diverse metal oxides are promising candidates for hot coal gas desulfurization. The extensive background knowledge and the state of the art on high-temperature sorbents for hydrogen sulfide removal in this review provides inspiration and guidance to develop new cost-effective sorbents.
50 citations
TL;DR: In this paper, waste tires are comparatively studied and assessed as a feedstock relative to coal and coconut char, and it is found that waste tires as feedstock for gasification are a viable solution to this ever-rising problem.
44 citations
TL;DR: In this paper, a biomass-based integrated gasification combined cycle (BIGCC) with oxy-fuel combustion is proposed to reduce the carbon emissions in power sector, and the effects of gasification temperature and pressure on syngas composition and system performance are investigated.
39 citations
TL;DR: In this paper, a new multigeneration system is proposed to utilize solar energy and biomass sources in a combined manner for cleaner production, where useful commodities of electricity, freshwater, cooling, ammonia and hydrogen are produced.
38 citations
TL;DR: In this article, the most important techno-economic aspects of coal-based IGCC power plant equipped with pre-combustion CO2 capture were assessed in view of technoeconomic indicators: selection of the gasification reactor, chemical vs. physical gas-liquid absorption used for CO 2 capture, F and H-class gas turbines used for the combined cycle power block, flexible hydrogen and power co-generation, etc.
37 citations
TL;DR: In this paper, three oxy-fuel IGCC power plants using different air separation technologies and carbon compression and compression (CCP) are developed to near-zero CO2 emission power systems.
35 citations
TL;DR: In this paper, a methanol and electricity poly-generation system based on coal partial gasification is proposed, where the authors conducted a Techno-economic analysis of the system by using Aspen Plus and the effects of the synthesis temperature and cyclic gas reflux ratio on the system performance were studied.
34 citations
TL;DR: In this article, the authors presented a conceptual design and economic analysis of a pre-combustion CO2 capture process based on H2-selective polymeric membranes in an integrated gasification combined cycle (IGCC) power plant, including the water-gas-shift (WGS) system.
TL;DR: In this paper, the authors investigated the thermal process, the micro structure and compositions of the CH4-CO2 binary hydrate formation and decomposition, and revealed that there are not one kind of hydrate but rather multi-kinds of hydrates coexistence during the formation.
TL;DR: In this article, the first set of device for continuously separating CO2 from gas mixture was developed on the base of the method of hydrate combined with chemical absorption, and the process feasibility of the combined method and the device were proved through experimental study on CO2 separation from integrated gasification combined cycle (IGCC) syngas.
TL;DR: In this article, a dual-stage Selexol™ for carbon capture was compared to pressure swing adsorption (PSA)-based warm gas CO2 capture Capture with SelexOL™ was limited to 834% due to high syngas CH4 content while the efficiency was 3111% HHV resulting in a 1st year cost of electricity (COE) of 1486 $/MWh
TL;DR: In this paper, the authors analyzed and compared the life cycle environmental and economic performance of solar energy integrated methanol production systems in China with the aid of GaBi software and found that the environmental impacts of Case-1 and Case-2 are at least 45.7% and 57.5% smaller than the selected impact categories of baseline case, respectively.
TL;DR: In this paper, performance analysis of an integrated syngas purification process was performed for a 500MW-class integrated gasification combined cycle (IGCC) and the net carbon capture cost per ton of CO2 was determined as approximately 21 USD.
TL;DR: In this article, the authors evaluated the efficiency and environmental impacts of coal type using a 500MW-class integrated coal gasification combined cycle (IGCC), including reheat combined cycle process with three-pressure level based on higher than 99.9% sulfur removal and 90% carbon capture.
TL;DR: In this paper, the authors developed a commercial ANSYS Fluent software and validated it for solid sorbent CO2 capture to investigate pressure swing adsorption (PSA) for CO2 separation from syngas with all the auxiliary operating steps.
TL;DR: In this paper, the water gas shift membrane (WGS-MR) was used in the context of its potential application in the IGCC process for power generation from coal, and the experimental results demonstrated the ability of the WGSMR to operate under the desired conditions and to improve the efficiency of WGS reaction.
TL;DR: In this paper, the authors proposed a gas switching combustion (GSC)-based power plant with integrated CO2 capture at almost no direct energy penalty, which achieved a 50.9% efficiency with 80.7% CO 2 capture.
01 Apr 2019
TL;DR: The development of advanced, coal-fired power generation technologies demonstrates the progress of science and is suitable for the sustainable development of human society.
Abstract: The development of electrical engineering and electronic, communications, smart power grid, and ultra-high voltage transmission technologies have driven the energy system revolution to the next generation: the energy internet. Progressive penetration of intermittent renewable energy sources into the energy system has led to unprecedented challenges to the currently wide use of coal-fired power generation technologies. Here, the applications and prospects of advanced coal-fired power generation technologies are analyzed. These technologies can be summarized into three categories: (1) large-scale and higher parameters coal-fired power generation technologies, including 620/650/700 °C ultra-supercritical thermal power and double reheat ultra-supercritical coal-fired power generation technologies; (2) system innovation and specific, high- efficiency thermal cycles, which consist of renewable energy-aided coal-fired power generation technologies, a supercritical CO2 Brayton cycle for coal-fired power plants, large-scale air-cooling coal-fired power plant technologies, and innovative layouts for waste heat utilization and enhanced energy cascade utilization; (3) coal-fired power generation combined with poly-generation technologies, which are represented by integrated gasification combined cycle (IGCC) and integrated gasification fuel cell (IGFC) technologies. Concerning the existing coal-fired power units, which are responsible for peak shaving, possible strategies for enhancing flexibility and operational stability are discussed. Furthermore, future trends for coal-fired power plants coupled with cyber-physical system (CPS) technologies are introduced. The development of advanced, coal-fired power generation technologies demonstrates the progress of science and is suitable for the sustainable development of human society.
TL;DR: In this paper, an integrated gasification combined cycle (IGCC) power plant with transport gasifier and advanced pressure swing adsorption based warm gas CO2 removal technology for carbon capture is analyzed with respect to its maximum carbon capture yield.
TL;DR: The closed-loop results show that the proposed nonlinear MPC (NLMPC) improves the control performance by up to 96% when compared to the DMC controller in terms of the integral squared error (ISE) results.
TL;DR: In this paper, a two-stage entrained-flow gasifier consisting of combustor and reductor sections was simulated by a one-dimensional model that has been proven through application to gasifiers of industrial scales.
TL;DR: In this article, the authors evaluated the performance of the coal gasifier at Taean IGCC with 300 MWe capacity both with and without steam in the gasifying agent under loads between 50 and 100%.
TL;DR: In this article, two chemical looping process configurations utilizing metal sulfides as chemical intermediates for sulfur recovery are investigated: (1) sulfur recovery (SR) system for sulfur production; (2) sulfur and hydrogen (H2) recovery (SHR) system and production utilizing staged H2 separation.
TL;DR: In this paper, a life cycle assessment (LCA) of the three scenarios, including two transformation scenarios and the original power plant scenario, was performed to assess the transformation effect and the life cycle results were compared with that of the ultra-supercritical (USC) unit and the integrated coal gasification combined cycle (IGCC) unit.
TL;DR: In this article, the performance of a coal-based integrated gasification combined cycle (IGCC) power plants with two different CCS technologies (double-stage Selexol absorption cycle and Ni-based chemical looping combustion (CLC) process) through intensive process simulation, heat integration and economic analysis was investigated.
Abstract: Coal-based Integrated Gasification Combined Cycle (IGCC) power plants show obvious gains over conventional pulverized coal power plants by achieving higher efficiency, lower carbon emissions and lower energy penalty for incorporating different carbon capture and storage (CCS) technologies. However, due to the lack of standardised designs, current IGCC-CCS projects are hindered by higher capital expenditures limiting their commercial implementation. Therefore, the key challenge is carrying out a techno-economic optimisation of IGCC-CCS power plants to ensure compatible power generation efficiency and accessibility. This study aims to optimise the performance of a coal-based IGCC plant with two different CCS technologies (double-stage Selexol absorption cycle and Ni-based chemical looping combustion (CLC) process) through intensive process simulation, heat integration and economic analysis. Heat integration has increased the net plant efficiency by more than 12% and decreased the levelised cost of electricity (LCOE) no less than 5 cents kWh−1. The CLC technology offered near-zero carbon emissions with higher plant efficiency and lower value of LCOE. Decreasing the CO2 capture rate by Selexol caused a decrease in LCOE and an increase in the corresponding CO2 specific emissions. Therefore, an appropriate decarbonisation scenario depends on a trade-off between the degree of carbon capture and the allowed CO2 specific emissions.
TL;DR: In this paper, the life cycle carbon footprint of two different conventional above ground coal fired power generation options with UCG integrated gasification combined cycle power generation with/without CCS for two different lignites and one bituminous coal.
TL;DR: In this paper, two process models are developed in Aspen Plus® software and compared techno-economically, and the results show that case 2 can enhance the process performance by 4.77% and economics in terms of cost of electricity by 5.9%.