scholarly journals Hybrid CSP biomass CO2-gasification process for power production: ASPEN plus simulation

2020 ◽  
Author(s):  
Shahid H. Ansari ◽  
Xinying Liu
Keyword(s):  
Aspen Plus ◽  
Power Production ◽  
Co2 Gasification ◽  
Gasification Process

scholarly journals Assessment of coal gasification in a pressurized fixed bed gasifier using an ASPEN plus and Euler–Euler model

2020 ◽  
Vol 7 (3) ◽  
pp. 516-535
Author(s):  
Tamer M. Ismail ◽  
Mingliang Shi ◽  
Jianliang Xu ◽  
Xueli Chen ◽  
Fuchen Wang ◽  
...  
Keyword(s):  
Coal Gasification ◽  
Fixed Bed ◽  
Size Variation ◽  
Aspen Plus ◽  
Two Dimensional ◽  
Cfd Model ◽  
Gas Generation ◽  
Gasification Process ◽  
Promising Tool ◽  
Euler Model

Abstract With the help of Aspen Plus, a two-dimensional unsteady CFD model is developed to simulate the coal gasification process in a fixed bed gasifier. A developed and validated two dimensional CFD model for coal gasification has been used to predict and assess the viability of the syngas generation from coal gasification employing the updraft fixed bed gasifier. The process rate model and the sub-model of gas generation are determined. The particle size variation and char burning during gasification are also taken into account. In order to verify the model and increase the understanding of gasification characteristics, a set of experiments and numerical comparisons have been carried out. The simulated results in the bed are used to predict the composition of syngas and the conversion of carbon. The model proposed in this paper is a promising tool for simulating the coal gasification process in a fixed bed gasifier.

scholarly journals Simulation of two-stage automotive shredder residue pyrolysis and gasification process using the Aspen Plus model

BioResources ◽  
2021 ◽  
Vol 16 (3) ◽  
pp. 5964-5984
Author(s):  
Bin Yang ◽  
Ming Chen
Keyword(s):  
Process Parameters ◽  
Aspen Plus ◽  
Product Distribution ◽  
Recycling Rate ◽  
Main Process ◽  
Optimal Process ◽  
Two Stage ◽  
Shredder Residue ◽  
Gasification Process ◽  
Automotive Shredder Residue

The disposal of automotive shredder residue (ASR) directly affects China’s goal of achieving a 95% recycling rate for end-of-life vehicles. Pyrolysis and gasification have gradually become the most commonly used thermochemical technologies for ASR recycling. To obtain more hydrogen-rich syngas, it is necessary to determine the optimal process parameters of the ASR pyrolysis and gasification process. The main process parameters of the two-stage ASR pyrolysis and gasification process were studied using the established Aspen Plus model. Through analyzing the effects of process parameters, such as the temperature, equivalence ratio, and mass ratio of steam to ASR feedstock, on the product distribution and product characteristics of ASR pyrolysis and gasification, the optimal process parameters were determined. A series of comparative experiments under different conditions were conducted. The experimental results verified the accuracy and reliability of the Aspen Plus simulation model for the ASR pyrolysis and gasification processes and verified the practical feasibility of the process parameters obtained from the simulation analysis.

scholarly journals CO2 gasification of microalgae (N. Oculata) – A thermodynamic study

2018 ◽  
Vol 154 ◽  
pp. 01002 ◽  
Author(s):  
Muflih Arisa Adnan ◽  
Mohammad Mozahar Hossain
Keyword(s):  
Performance Evaluation ◽  
Atmospheric Pressure ◽  
High Performance ◽  
Aspen Plus ◽  
Thermodynamic Study ◽  
Producer Gas ◽  
System Efficiency ◽  
High Concentration ◽  
New Model ◽  
Gasification Process

A new model of CO2 gasification has been developed in the Aspen Plus. The potential of microalgae (N. oculata) for CO2 gasification also has been investigated. The present gasification process utilizes the CO2 at atmospheric pressure as the gasifying agent. The steam is also injected to the gasification to enhance the H2 production. The composition of the producer gas and gasification system efficiency (GSE) are used for performance evaluation. It is found that the CO2 gasification of microalgae produces a producer gas with a high concentration of CO and H2. The GSE indicates that the process works at high performance.

Co-gasification of tire and biomass for enhancement of tire-char reactivity in CO2 gasification process

2013 ◽  
Vol 138 ◽  
pp. 124-130 ◽  
Author(s):  
Pooya Lahijani ◽  
Zainal Alimuddin Zainal ◽  
Abdul Rahman Mohamed ◽  
Maedeh Mohammadi
Keyword(s):  
Co2 Gasification ◽  
Gasification Process ◽  
Char Reactivity

Modeling of oil palm frond gasification process in a multistage downdraft gasifier using aspen plus

2020 ◽  
Vol 1517 ◽  
pp. 012036
Author(s):  
A R Saleh ◽  
B Sudarmanta ◽  
S Mujiarto ◽  
K Suharno ◽  
S Widodo
Keyword(s):  
Oil Palm ◽  
Aspen Plus ◽  
Downdraft Gasifier ◽  
Gasification Process ◽  
Oil Palm Frond ◽  
Palm Frond

scholarly journals Catalytic Coal Gasification Process Simulation with Alkaline Organic Wastewater in a Fluidized Bed Reactor Using Aspen Plus

Energies ◽  
2019 ◽  
Vol 12 (7) ◽  
pp. 1367 ◽  
Author(s):  
Xiao ◽  
Wang ◽  
Zheng ◽  
Qin ◽  
Zhou
Keyword(s):  
Process Simulation ◽  
Equivalence Ratio ◽  
Coal Gasification ◽  
Aspen Plus ◽  
Operating Conditions ◽  
Catalytic Gasification ◽  
Gasification Process ◽  
Cold Gas Efficiency ◽  
Gas Efficiency ◽  
Organic Wastewater

A co-gasification process was proposed both for treating alkaline organic wastewater and to promote coal gasification by the alkaline substances in situ. A catalytic gasification model was developed by introducing a catalytic correction factor to describe the catalytic effects quantitatively. An integrated process simulation was carried out using Aspen Plus equipped with FORTRAN subroutines. The model was verified using the root mean square error between the simulation results and experimental data from the literature. Syngas composition, cold gas efficiency, and carbon conversion efficiency were analyzed with respect to different operating conditions (reaction temperature, steam/coal ratio, and equivalence ratio). The optimal conditions are summarized based on a self-sufficient system by using sensitivity analysis: Gasification temperature of 700 °C, steam/coal ratio = 1.0, and equivalence ratio = 0.4.

Simulation of Rice Straw Oxygen-Steam Gasification in an Entrained-Flow Gasifier Using ASPEN PLUS

2011 ◽  
Vol 71-78 ◽  
pp. 2389-2395 ◽  
Author(s):  
Yuan Mou Wu ◽  
Jin Song Zhou ◽  
Zhong Yang Luo
Keyword(s):  
Rice Straw ◽  
Residence Time ◽  
Aspen Plus ◽  
Steam Gasification ◽  
Pyrolysis Process ◽  
Optimum Amount ◽  
Pyrolysis Products ◽  
Biomass Utilization ◽  
Gasification Process ◽  
Entrained Flow Gasifier

Biomass oxygen-steam gasification associated with synthesis technology known as indirect biomass liquefaction is regarded as one of the most promising technologies of biomass utilization. In this paper, a comprehensive gasification model was developed for the simulation of rice straw oxygen-steam gasification using ASPEN PLUS. The gasification process was divided into two parts: pyrolysis and gasification. The RYield module was used to simulate the pyrolysis process with an external FORTURN program to calculate the pyrolysis products while the gasification process was calculated by the RCSTR module. With the help of the model, the gasification of rice straw was simulated under different residence time, different temperature and different amount of steam. The results showed that the proper residence time and temperature is 1.5s and 1300°C, respectively. The optimum amount of steam is steam/biomass=0.12 while the addition of oxygen is oxygen/biomass=0.2.

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