(3) Multiobjective optimization of the coal gasification process using the genetic algorithm to obtain the optimal solution. 2 100%Model and mathematical method K Gasification model Firstly, the coal gasification model is established. The gasification model is shown in, in which the corresponding model selected by each module in ...
A heat integration optimization method that considers the changes in process parameters is proposed to find the global optimal process scheme for a coal chemical company's phenols and ammonia recovery process. The phenols and ammonia recovery process is simulated by Aspen Plus, and a programming method for heat exchanger networks synthesis that can simultaneously optimize process parameters ...
For the downstream synthesis process, no matter what the end product is, there is one common prerequisite: the syngas (mostly H 2 and CO) generated from the gasification process must contain as few impurities and inert species such as nitrogen as possible. Traditionally, this requirement is met by using pure oxygen instead of air as gasifying ...
Nexant completed the first two tasks (Tasks 1 and 2) of the ''Gasification Plant Cost and Performance Optimization Study'' for the DOE's National Energy Technology Laboratory (NETL) in 2003. These tasks evaluated the use of the EGAS {trademark} gasification technology (now owned by ConocoPhillips) for the production of power either alone or ...
1. Introduction. Coal gasification is a process in which coal reacts with gasification agents (, steam, O 2 /air, and CO 2) at a certain temperature and pressure to produce clean synthesis gas, which can be used as gaseous fuel or as a raw material for chemical synthesis to produce various chemical products and liquid gasification is an important way to achieve the clean and ...
The robustness of the efficient syngas (ES, H 2 + CO) fraction in an entrained flow coal gasification is very important to the stable operations of some downstream applications. This study presents the details about the robust optimization of the ES fraction in a typical entrained flow coal gasification, Shell coal gasification process (SCGP).
Semantic Scholar extracted view of "Comprehensive optimization of coal chemical looping gasification process for low CO2 emission based on multiscale simulation coupled experiment" by Z. Cui et al.
In this work, the technoeconomic and exergy analyses of two gasification technologies with integration into heat and power combined cycles are presented: i). Circulating fluidized bed (CFB) and ii). Dual fluidized bed (DFB) systems. As feedstock, lignocellulosic biomass (sugarcane bagasse, SCB) was considered. The gasification process of the fluidizedbed systems (circulating and dual bed ...
Firstly, through the analysis of the simulation results of the threestage coal gasification furnace, it is found that there is room for improvement in the coal gasification process. And then, the coal gasification process is transformed from the structure and. Further modification of the system. The optimization and improvement of coal ...
It is coal gasification that converts the combustible part of coal into combustible gas at high temperature, using oxygen or water vapour as gasification agent [7]. ... Arora et al. made multiobjective optimization for the process of biomass ammonia production and analysed the prospect of this process in different countries [32].
Carbon dioxide (CO 2) emission reduction has become an urgent topic to be studied and solved with the indepth understanding of global warming and frequent occurrence of extreme present, the application of chemical looping technology in coal gasification to produce high purity synthesis gas is an important way to achieve CO 2 emission reduction, ensure energy security, and promote ...
The rest of this article proceeds as follows: The SCGP is briefly introduced in Section operation optimization model is established in Section validate the effectiveness of the proposed model, an industrial coal gasification process is studied and the optimization result is analyzed in Section article is ended with a conclusion in Section 5.
gasifier. (Show more) coal gasification, any process of converting coal into gas for use in illuminating and heating. The first illuminating gas was manufactured from coal in England in the late 18th century by the process of carbonization or destructive distillation, heating coal in the absence of air, leaving a residue of coke as a byproduct.
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Coal gasification and coking to methanol (GCtM) is a newly developed and industrialized process in China. However, in the early stages, the idea of integration hardly applied to this process. ... process synthesis, analysis, optimization, and process design of coal gasificationbased energy and chemical processes. The conceptual models ...
Feeding variability appears extensively in phenol and ammonia recovery process of coal chemical plant, which has caused severe problems in effluent quality. This study is aim to take the feeding variability into consideration for process optimization and analysis of the phenol and ammonia recovery process, have been not studied in previous efforts.
Then, optimization study using modelling software, life cycle assessment, and circular economy is inevitable. Finally, sufficient funding is required for commercialization. ... Aquatic risk assessment based on the results of research on mine waters as a part of a pilot underground coal gasification process. Process Saf Environ 148:548558 ...
Coal combustion and gasification are the processes to utilize coal for production of electricity and many other applications. Global energy demand is increasing day by day. Coal is an abundant source of energy but not a reliable source as it results into high CO2 emissions. Energy industries are expected to decrease the CO2 emission to prevent global warming. Coal gasification is a process ...
Coal gasification is an efficient, clean and versatile process, which can be adapted for producing hydrogen [2]. The comparison of different technologies as well as the
Coal gasificationbased FischerTropsch (FT) synthesis processes, often termed "coaltoliquids" (CTL) plants, are complex integrated energy systems which typically exploit the waste heat from gas turbines and/or a number of process units in a Heat Recovery Steam Cycle (HRSC).Besides converting waste heat into electricity, the HRSC can also supply heat to endothermic processes in the CTL ...
The thermoeconomic optimization of the improved gasification process with CWS preheating technology using multiobjective optimization is a tradeoff between cold gas efficiency and total cost. The MOGA is conducted to maximize CGE and minimize C tot generating 100 samples initially and 100 samples per iteration. As the convergence criterion ...
Recently, chemical looping gasification (CLG) has attracted much attention as a promising highpurity syngas production technology derived from the concept of the chemical looping [8].The principle of the CLG process is shown in Fig. process partially oxidizes solid fuel to obtain syngas by reduction through oxygen loss (Me x O y1) in the fuel reactor (FR) and oxidation through oxygen ...
Optimization of an advanced coalfired integrated gasification combined cycle system requires an accurate numerical prediction of gasifier performance. While the turbulent multiphase reacting flow inside entrainedflow gasifiers has been modeled through computational fluid dynamic (CFD), the accuracy of submodels requires further improvement.
The results of exergy analyses can provide valuable insights into the design, assessment and optimization of SCWG processes or systems. Section snippets Coal gasification process. Coal gasification is an endothermic process, the heat required for gasification can be supplied by partial oxidation of feedstock (autothermal gasification) or by an ...
Section snippets Process description. The studied system is based on a typical billion Nm 3 SNG/y CtSNG project with 580 t/h of feed coal. A typical CtSNG process is illustrated in Fig. 2. Initially, the coal mixed with steam reacts with oxygen from air separation unit (ASU) in coal gasification unit (CGU) to produce crude syngas.
with emphasis on coal gasification, cogasification of coal with an alternative feedstock, and NG technologies using the LCOH (2018 /kg) as the figure of ... netzero H2 through technology RD (, process intensification, advanced CO2 capture) • Analysis Activities: • Characterization of MSW, Waste Plastic, and Biomass Properties
1. Introduction. With the depletion of oil resources, it is important to improve clean coal technology and use coal resources in a more efficient way, which also helps in reducing pollutant emissions [1].Coal gasification is one of the most important clean coal technologies, and the Shell coal gasification process (SCGP) is a popular coal gasification process.
This process is detailed modeled by dividing it into coal gasification, water gas shift, acid gas removal, dimethyl oxalate synthesis, ethylene glycol synthesis, and ethylene glycol refining units. After comparing and verifying with literature and industrial data, this work conducts a detailed advanced exergy analysis and optimization of the ...
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