WEBFeb 19, 2024 · Coal gasifiion technology is essential for realizing clean and efficient conversion of coal, as well as for reducing carbon emissions. However, coal gasifiion technology is accompanied by a large amount of coal gasifiion wastewater that is biodegradable. In this work, tourmaline was applied as a alyst in electroFenton like .
WEBJun 1, 2023 · According to the accurate model, the simulation for ZLD of fixedbed coal gasifiion wastewater treatment process is established, and this process is assessed from the perspective of thermodynamics, economy, and environment. The total energy consumption of ZLD process before optimization is × 10 8 W. The results of .
WEBUnderground coal gasifiion (UCG) is an industrial process which converts coal into product gas. UCG is an insitu gasifiion process, carried out in nonmined coal seams using injection of oxidants and steam. The product gas is brought to the surface through production wells drilled from the surface. The predominant product gases are methane, .
WEBJan 1, 2013 · Gasifiion of coal is a process whereby coal is converted to a syngas, which is predominately a mixture of carbon monoxide and hydrogen. As shown schematically in Fig., syngas is a precursor to an extensive range of energy and chemical products: ...
WEBThe process flowsheet of the coal gasifiion process in a downdraft fixedbed gasifier using air as an oxidant is shown in Figure 1. The ... In order to provide the performance data of the integrated Biomass to Liq. system and future process optimization, a comprehensive model of the downdraft biomass gasifiion process based on Aspen .
WEBJun 1, 2015 · Abstract. This study develops a novel mathematical model which simultaneously optimizes the key operating parameters of a heat integrated coal gasifiion process to achieve maximum economic profit. It has been proved that, at above 1400 K, the operating conditions that maximize the profit automatically lead to .
WEBJan 1, 2023 · The coalbiomass cogasifiion process is environmentally friendly for hydrogen production, yet came by the expense of high cost, hence an appropriate tradeoff among the conflicting objectives is pursued. ... The whole optimization process is based on COM technology in Matlab, which realizes the integrated calculation of optimization ...
WEBAug 1, 2015 · Support Vector Machine Algorithm is used to estimate oxygen–steam ratios in coal gasifiion process. • The coupled simulated annealing optimization tool obtains the optimal model parameters. • The model has been developed and tested using 100 series of the data. • Excellent agreement between the results of model and reported data .
WEBApr 1, 2017 · 1. Introduction. Reliable feeding of pulverized coal into the gasifier is of great importance for coal gasifiion with the pressurized entrainedflow process (Guo et al., 2012).During feeding into the gasifier, any fluctuation of coal mass flow rate will affect the oxygen carbon ratio directly and as a result, affect the index of gasifiion .
WEBDec 1, 2021 · Compared with coaltomethanol fuel, although the life cycle economic cost was increased by %, the CO 2 emission was reduced by %. ... a cogasifiion process of sewage sludge and the ...
WEBCoal gasifiion is a process in which coal is converted to a lowgrade gas; it can be regarded in many ways as fuelrich combustion. Oxygenblown coal gasifiers operate at overall equivalence ratios (fuel to oxidizer ratio normalized by fuel to oxidizer ratio required to fully oxidize fuel) greater than two. Commercial or nearcommercial ...
WEBJun 1, 2022 · The novel gasifiionreduction coupling process (GRCP) was proposed to obtain higher coal gas/hot metal polygeneration system efficiency. The hematite particles replaced previous moderators (H 2 O/CO 2) in the entrainedflow gasifiers, and direct reduced iron (DRI) can be obtained this study, the thermodynamic .
WEBSemantic Scholar extracted view of "Comprehensive optimization of coal chemical looping gasifiion process for low CO2 emission based on multiscale simulation coupled experiment" by Z. Cui et al.
WEBSep 1, 2023 · The basic process of insitu gasifiion of coal looks very straightforward. This process requires first drilling an injection borehole and a production borehole from the surface into the coal seam, then linkage through the coal seam between the two boreholes to facilitate the gases to flow from gasifiion zone to the production well. ...
WEBOne of the appliions of coal as a fuel is the production of gas through circulating fluidized bed technology. The modeling of these systems allows verifying and optimizing the design and operation parameters of gasifiers for analysis and improvement of gasifiion technologies. The present study applies the fundamentals of modeling a circulating .
WEBJan 1, 2023 · The samples in this study are raw coal (RC) and dry ash (DA) from China's 40,000 Nm 3 /h atmospheric circulating fluidized bed gasifiion plant. The gasifiion temperature is about 980 ℃, the coal feeding amount is t/h, the coal temperature into the gasifier is 80 ℃, and the gasifying agent flow is kg/ samples are labeled .
WEBNov 6, 2012 · A framework is proposed for integration of unit modeling, process synthesis, analysis, optimization, and process design of coal gasifiionbased energy and chemical processes. The conceptual models of these processes are built by the modeling and synthesis blocks in the framework, which are the bases of analysis and .
WEBMay 7, 2021 · The results of the study indied that the gasifiion process is an appropriate treatment for obtaining highquality syngas from waste materials with high carbon and low moisture content and the Box–Behnken design was successfully applied in the optimization of the gasifiion process.
WEBNov 1, 2023 · This process is detailed modeled by dividing it into coal gasifiion, 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 ...
WEBMay 30, 2024 · As illustrated in Fig. 18, the optimized IGCC system gasifiion process exergy efficiency increased by %, and due to the improvement of the optimization process, yet the gas turbine unit, the waste heat boiler unit and the total exergy efficiency have been improved, indiing that the optimization method is beneficial to increasing .
WEBDec 1, 2023 · Gasifiion is considered the most promising thermoschemical method, which can easily transform any kind of solid fuel into a gaseous mixture usually called syngas [9].The syngas later can be converted into synthetic fuel through the FischerTropsch process and also into chemicals like methanol [10, 11].For instance, our .
WEBJan 6, 2021 · The present research work proposes an optimization procedure using Taguchi method and utility concept with the main objective of maximizing the calorific value of syngas with lower CO 2 yield during coal gasifiion process using thermodynamic equilibrium model based on stoichiometric approach. After validating the model with .
WEBJul 15, 2018 · A flowsheet of the studied coal to ethylene glycol (CtEG) process is shown in Fig. CtEG process is complied but mainly consists of a few basic units: air separation unit (ASU), coal gasifiion (CG), water gas shift (WGS), gas separation and purifiion (GSP), sulfur recovery (SR), dimethyl oxalate synthesis (DMOS), ethylene .
WEBApr 8, 2022 · Biomass gasifiion technology has an ancient and wellestablished background. The technology has widely been used to produce H2 and syngas which is subsequently upgraded to obtain valuable biofuels, Fischer–Tropsch chemicals and used in combined heat and power (CHP) plants. Abatement of tarrelated complexes with an .
WEBDec 6, 2022 · 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 .
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