scholarly journals ASPEN plus modelling of air–steam gasification of biomass with sorbent enabled CO2 capture

2016 ◽  
Vol 2 (2) ◽  
pp. 94-103 ◽  
Author(s):  
S. Rupesh ◽  
C. Muraleedharan ◽  
P. Arun
Keyword(s):  
Co2 Capture ◽  
Aspen Plus ◽  
Steam Gasification

Syngas Production from Steam Gasification of Palm Kernel Shell with Subsequent CO2 Capture Using CaO Sorbent: An Aspen Plus Modeling

2017 ◽  
Vol 31 (11) ◽  
pp. 12350-12357 ◽  
Author(s):  
Muhammad Shahbaz ◽  
Suzana Yusup ◽  
Abrar Inayat ◽  
Muhammad Ammar ◽  
David Onoja Patrick ◽  
...  
Keyword(s):  
Co2 Capture ◽  
Palm Kernel ◽  
Aspen Plus ◽  
Steam Gasification ◽  
Palm Kernel Shell ◽  
Syngas Production

Steam Gasification of Biomass Coupled with Lime-Based CO2 Capture in a Dual Fluidized Bed: A Modeling Study

2014 ◽  
Vol 716-717 ◽  
pp. 142-145
Author(s):  
Xiao Ming Wang ◽  
Xian Bin Xiao ◽  
Xu Jiao Chen ◽  
Ji Liu ◽  
Wen Yan Li
Keyword(s):  
Renewable Energy ◽  
Fluidized Bed ◽  
Hydrogen Content ◽  
Co2 Capture ◽  
Theoretical Basis ◽  
Aspen Plus ◽  
Steam Gasification ◽  
Operating Parameters ◽  
Dual Fluidized Bed ◽  
Gasification Technology

Biomass is an important renewable energy and making hydrogen-rich syngas from biomass is promising. Dual fluidized bed gasification technology can increase hydrogen content in the syngas. Moreover, steam gasification of biomass coupled with lime-based CO2 capture in a dual fluidized bed can further improve the syngas quality . This paper established a dual fluidized bed gasification model using Aspen plus,in order to explore the effect of different gasification temperatures and steam to biomass ratios on hydrogen content in syngas, providing a theoretical basis for the optimization of operating parameters and process.

scholarly journals Technological Solutions and Tools for Circular Bioeconomy in Low-Carbon Transition: Simulation Modeling of Rice Husks Gasification for CHP by Aspen PLUS V9 and Feasibility Study by Aspen Process Economic Analyzer

Energies ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 2006
Author(s):  
Diamantis Almpantis ◽  
Anastasia Zabaniotou
Keyword(s):  
Fluidized Bed ◽  
Rice Husk ◽  
Aspen Plus ◽  
Economic Assessment ◽  
Product Yield ◽  
Steam Gasification ◽  
Low Carbon ◽  
Simulation Tools ◽  
Fluidized Bed Gasifier ◽  
Annual Earnings

This study explored the suitability of simulation tools for accurately predicting fluidized bed gasification in various scenarios without disturbing the operational system, and dedicating time to experimentation, in the aim of benefiting the decision makers and investors of the low-carbon waste-based bioenergy sector, in accelerating circular bioeconomy solutions. More specifically, this study aimed to offer a customized circular bioeconomy solution for a rice processing residue. The objectives were the simulation and economic assessment of an air atmospheric fluidized bed gasification system fueled with rice husk, for combined heat and power generation, by using the tools of Aspen Plus V9, and the Aspen Process Economic Analyzer. The simulation model was based on the Gibbs energy minimization concept. The technological configurations of the SMARt-CHP technology were used. A parametric study was conducted to understand the influence of process variables on product yield, while three different scenarios were compared: (1) air gasification; (2) steam gasification; and (3) oxygen-steam gasification-based scenario. Simulated results show good accuracy for the prediction of H2 in syngas from air gasification, but not for the other gas components, especially regarding CO and CH4 content. It seems that the RGIBBS and Gibbs free minimization concept is far from simulating the operation of a fluidized bed gasifier. The air gasification scenario for a capacity of 25.000 t/y rice husk was assessed for its economic viability. The economic assessment resulted in net annual earnings of EUR 5.1 million and a positive annual revenue of EUR 168/(t/y), an excellent pay out time (POT = 0.21) and return of investment (ROI = 2.8). The results are dependent on the choices and assumptions made.

scholarly journals Biomass Steam Gasification, High-Temperature Gas Cleaning, and SOFC Model: A Parametric Analysis

Energies ◽  
2020 ◽  
Vol 13 (22) ◽  
pp. 5936
Author(s):  
Vera Marcantonio ◽  
Danilo Monarca ◽  
Mauro Villarini ◽  
Andrea Di Carlo ◽  
Luca Del Zotto ◽  
...  
Keyword(s):  
Energy Content ◽  
Aspen Plus ◽  
Electrical Energy ◽  
Simulation Software ◽  
Steam Gasification ◽  
Operating Conditions ◽  
Electrical Efficiency ◽  
Gas Cleaning ◽  
Predicting Performance ◽  
Steady State Model

Gasification technology is actually one of the most effective ways to produce power and hydrogen from biomass. Solid oxide fuel cells (SOFCs) have proved to be an excellent energy conversion device. They can transform the chemical energy content in the syngas, produced by a gasifier, directly into electrical energy. A steady-state model of a biomass-SOFC was developed using process simulation software, ASPEN Plus (10, AspenTech, Bedford, MA, USA). The objective of this work was to implement a biomass-SOFC system capable of predicting performance under diverse operating conditions. The system is made of a gasification zone, gas cleaning steps, and SOFC. The SOFC modelling was done without external subroutines, unlike most models in the literature, using only the existing ASPEN Plus blocks, making the model simpler and more reliable. The analysis of the syngas composition out of each cleaning step is in accordance with literature data. Then, a sensitivity analysis was carried out on the main parameters. The results indicate that there must be a trade-off between voltage, electrical efficiency, and power with respect to current density and it is preferable to stay at a low steam-to-biomass ratio. The electrical efficiency achieved under the operating conditions is 57%, a high value, making these systems very attractive.

Modeling of Ultra Superheated Steam Gasification in Integrated Gasification Combined Cycle Power Plant With Carbon Dioxide Capture

2008 ◽  
Author(s):  
Peng Pei ◽  
Manohar Kulkarni
Keyword(s):  
Carbon Dioxide ◽  
Power Plant ◽  
Co2 Capture ◽  
Superheated Steam ◽  
Carbon Dioxide Capture ◽  
Combined Cycle ◽  
Steam Gasification ◽  
Integrated Gasification Combined Cycle ◽  
Integrated Gasification ◽  
Gasification Technology

Integrated Gasification Combined Cycle (IGCC) is believed to be one of the most promising technologies to offer electricity and other de-carbon fuels with carbon capture requirement as well as to meet other emission regulations at a relatively low cost. As one of the most important parts, different gasification technologies can greatly influence the performance of the system. This paper develops a model to examine the feasibilities and advantages of using Ultra Superheated Steam (USS) gasification technology in IGCC power plant with carbon dioxide capture and storage (CCS). USS gasification technology converts coal into syngas by the endothermic steam reforming reaction, and the heat required for this reaction is provided by the sensible heat in the ultra superheated steam. A burner utilizes synthetic air (21% O2 and 79% H2O) to burn fuel gas to produce the USS flame for the gasification process. The syngas generated from USS gasification has a higher hydrogen fraction (more than 50%) then other gasification processes. This high ratio of hydrogen is considered to be desired for a “capture-ready” IGCC plant. After gas cleanup and water gas shift reaction, the syngas goes to the Selexol process for carbon dioxide removal. Detailed calculations and analysis are performed to test the performance of USS gasification technology used in IGCC generation systems. Final results such as net output, efficiency penalty for CO2 capture part, and net thermal efficiency are calculated and compared when three different coal types are used. This paper uses published data of USS gasification from previous research at the University of North Dakota. The model also tries to treat the IGCC with carbon dioxide capture system as a whole thermal system, the superheated steam used in USS gasification can be provided by extracting steam from the lower pressure turbine in the Rankine Cycle. The model will make reasonable use of various waste energies and steams for both mechanical and chemical processes to improve the performance of the plant, and incorporate CO2 capture system into the design concept of the power plant.

Advanced Combined Cycle Systems Based on Methanol Indirect Combustion

2011 ◽  
Author(s):  
Shimin Deng ◽  
Rory Hynes
Keyword(s):  
Co2 Capture ◽  
Exergy Analysis ◽  
Aspen Plus ◽  
Combined Cycle ◽  
Commercial Application ◽  
Cycle System ◽  
Cycle Systems ◽  
Chemical Exergy

In this paper, two new combined cycle systems with/without CO2 capture based on methanol indirect combustion are developed, which have significantly higher efficiency than methanol fueled conventional combined cycle. The performance of the new systems is compared with conventional combined cycle to identify the potentials of methanol indirect combustion. The systems are modeled by using Aspen Plus™ and GTPro™. Exergy analysis and the principle of cascade utilization of chemical exergy reasonably explain the improved efficiency of the new systems. Other merits of the combined cycle system based on methanol indirect combustion are discussed and its promising commercial application aspects are pointed out.

Energy and Exergy Analysis of an IGCC With In-Situ CO2 Capture

2006 ◽  
Author(s):  
P. Klimantos ◽  
N. Koukouzas ◽  
E. Kakaras
Keyword(s):  
Power Plant ◽  
Co2 Capture ◽  
Coal Gasification ◽  
Exergy Analysis ◽  
Steam Gasification ◽  
Low Grade ◽  
Fluidised Bed ◽  
High Hydrogen ◽  
Thermodynamic Irreversibility ◽  
Igcc Power Plant

Within this study energetic and exergetic theoretical analyses of a novel IGCC power plant concept with CO2 capture are carried out. The core process of the concept examined is based on the high pressure steam gasification of high moisture low grade coals where CO2 is captured reacting exothermically with CaO-based sorbents and high hydrogen-content carbon-free fuel gas is produced without using additional shift reactors and CO2 separation stages. The carbonated sorbents are continuously fed to an oxygen blown calcination reactor where pure CO2 is released and active CaO is reproduced. This concept can be realised in a dual fluidised bed reactor system where coal gasification and CaCO3 calcination are taking place simultaneously. In this paper possible plant configurations are presented and detailed simulation of 400 MWe IGCC power plant based on a state of the art gas turbine cycle with a three pressure stage heat recovery steam generator is performed using the ASPEN Plus simulator. The calculated results demonstrate the capability of the power plant to deliver almost decarbonised electricity while achieving net plant efficiencies at about 38.4% of coal lower heating value (LHV). Based on the energy analysis and the data generated from the simulation an exergy analysis was performed in order to quantify and localize the thermodynamic irreversibility in each process component as well as to asses the overall thermodynamic imperfection of the proposed process.

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