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Aspen plus软件及其在燃煤发电工程中的应用 总被引:1,自引:0,他引:1
介绍了ASPEN PLUS软件的基本流程模拟和功能。结合该软件在我国燃煤发电工程中的应用.指出了该软件的应用方向,为燃煤发电工程的研究和技术的应用提供参考。 相似文献
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Conversion of natural gas to liquid fuels is a challenging issue. In SMDS process natural gas is first partially oxidized with pure oxygen to synthesis gas (a mixture of H2 and CO) which is then converted to high quality liquid transportation fuels by utilizing a modernized version of the Fischer-Tropsch reaction. This paper presents a computer simulation of the first stage of the process, i.e. the synthesis gas production from natural gas. ASPEN PLUS equipped with a combustion databank was used for calculations. Concentrations of over 30 combustion species and radicals expected in the synthesis gas have been calculated at equilibrium and several non-equilibrium conditions. Using a sensitivity analysis tool, the relative feed flow rates and reactor parameters have been varied searching to maximize the CO/O2 yield as well as to minimize the undesired nitrogen compounds in the product stream. The optimum reactor temperature for maximizing the CO mole fraction in the synthesis gas was also calculated. 相似文献
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碳酸乙烯酯萃取精馏分离DMC-CH_3OH恒沸物模拟 总被引:1,自引:0,他引:1
采用碳酸乙烯酯作萃取剂萃取精馏分离碳酸二甲酯(DMC)与甲醇的恒沸物,为了得到纯度达99.5%的DMC产品,利用ASPEN PLUS流程模拟软件对此过程进行了模拟计算,得到了最佳的工艺操作条件及工艺参数,DMC的纯度达到99.67%,萃取剂可以完全循环利用,为工业化装置提供了重要的理论依据和设计参考。 相似文献
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Simulation of DME synthesis from coal syngas by kinetics model 总被引:1,自引:0,他引:1
Hyun Min Shim Seung Jong Lee Young Don Yoo Yong Seung Yun Hyung Taek Kim 《Korean Journal of Chemical Engineering》2009,26(3):641-648
DME (Dimethyl Ether) has emerged as a clean alternative fuel for diesel. There are largely two methods for DME synthesis.
A direct method of DME synthesis has been recently developed that has a more compact process than the indirect method. However,
the direct method of DME synthesis has not yet been optimized at the face of its performance: yield and production rate of
DME. In this study it is developed a simulation model through a kinetics model of the ASPEN plus simulator, performed to detect
operating characteristics of DME direct synthesis. An overall DME synthesis process is referenced by experimental data of
3 ton/day (TPD) coal gasification pilot plant located at IAE in Korea. Supplying condition of DME synthesis model is equivalently
set to 80 N/m3 of syngas which is derived from a coal gasification plant. In the simulation it is assumed that the overall DME synthesis
process proceeds with steadystate, vapor-solid reaction with DME catalyst. The physical properties of reactants are governed
by Soave-Redlich-Kwong (SRK) EOS in this model. A reaction model of DME synthesis is considered that is applied with the LHHW
(Langmuir-Hinshelwood Hougen Watson) equation as an adsorption-desorption model on the surface of the DME catalyst. After
adjusting the kinetics of the DME synthesis reaction among reactants with experimental data, the kinetics of the governing
reactions inner DME reactor are modified and coupled with the entire DME synthesis reaction. For validating simulation results
of the DME synthesis model, the obtained simulation results are compared with experimental results: conversion ratio, DME
yield and DME production rate. Then, a sensitivity analysis is performed by effects of operating variables such as pressure,
temperature of the reactor, void fraction of catalyst and H2/CO ratio of supplied syngas with modified model. According to simulation results, optimum operating conditions of DME reactor
are obtained in the range of 265–275 °C and 60 kg/cm2. And DME production rate has a maximum value in the range of 1–1.5 of H2/CO ratio in the syngas composition. 相似文献
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Assabumrungrat Suttichai Wongwattanasate Darin Pavarajarn Varong Praserthdam Piyasan Arpornwichanop Amornchai Goto Shigeo 《Korean Journal of Chemical Engineering》2004,21(6):1139-1146
The synthesis of ethyl tert-butyl ether (ETBE) from a liquid phase reaction between tert-butyl alcohol (TBA) and ethanol (EtOH)
in reactive distillation has been studied.β-Zeolite catalysts with three compositions (Si/Al ratio=13, 36 and 55) were compared by testing the reaction in a semi-batch
reactor. Although they showed almost the same performance, the one with Si/Al ratio of 55 was selected for the kinetic and
reactive distillation studies because it is commercially available and present in a ready-to-use form. The kinetic parameters
of the reaction determined by fitting parameters with the experimental results at temperature in the range of 343–363 K were
used in an ASPEN PLUS simulator. Experimental results of the reactive distillation at a standard condition were used to validate
a rigorous reactive distillation model of the ASPEN PLUS used in a simulation study. The effects of various operating parameters
such as condenser temperature, feed molar flow rate, reflux ratio, heat duty and mole ratio of H2O : EtOH on the reactive distillation performance were then investigated via simulation using the ASPEN PLUS program. The
results were compared between two reactive distillation columns: one packed withβ-zeolite and the other with conventional Amberlyst-15. It was found that the effect of various operating parameters for both
types of catalysts follows the same trend; however, the column packed withΒ-zeolite outperforms that with Amberlyst-15 catalyst due to the higher selectivity of the catalyst. 相似文献