By C. Hendriks
1. 1. Greenhouse gasoline emissions and weather switch . . . . . . . . . . . . . . three 1. 1. 1. Emissions and concentrations of greenhouse gases three 1. 1. 2. impression of accelerating greenhouse gases focus four 1. 2. techniques to minimize carbon dioxide emissions five 1. 2. 1. Carbon dioxide removing eight 1. three. Scope of the thesis 10 1. four. define of the thesis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . eleven 1. four. 1. common overview strategy. . . . . . . . . . . . . . . . . . . . . . . 12 1. four. 2. a few notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . thirteen II. Simulation and optimization of carbon dioxide restoration from the flue gases of a coal-fired strength plant utilizing amines 14 summary 19 2. 1. creation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 2. 2. The chemical absorption method. . . . . . . . . . . . . . . . . . . . . . . . 22 2. 2. 1. normal strategy description. . . . . . . . . . . . . . . . . . . . . . . 22 2. 2. 2. different types of absorbent 23 2. 2. three. results of flue fuel contaminants 24 2. three. Simulation of the scrubber in ASPEN PLUS . . . . . . . . . . . . . . . . . 25 2. three. 1. ASPEN PLUS for stream sheet simulation 26 2. three. 2. Simulation of the functionality for the base-case layout . . 26 the scrubber . . . . . . . . . . . . . . . . . . . . . . 29 2. three. three. Optimization of two. three. four. layout and effects 32 2. three. five. dialogue. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 2. four. Integration of the scrubber within the energy plant 35 2. four. 1. strength loss because of steam extraction 36 2. four. 2. strength kept via warding off preheating boiler feed water . . . 38 2. four. three. strength intake through the carbon dioxide scrubber . . . . . 38 2. four. four. energy intake for carbon dioxide compression . . . . . 38 2. four. five. Calculation of plant potency losses " . . . . . . . . . . . . . . 39 2. 5.
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Extra resources for Carbon Dioxide Removal from Coal-Fired Power Plants
Example text
With this set the properties for strong electrolyte solutions are calculated with the Non Random Two Liquid (NRTL)-model, with the addition of Henry's law for indefinite solutions. In all other cases the Redlich-KwongSoave equations of state are used. Special data packages, developed by ASPEN PLUS, are used for a system consisting of an amine, CO 2 and H 20 [ASPEN PLUS, 1988]. Due to limitations of the data packages, the maximum MEA and DEA concentration that can be considered is a weight percentage of 50 and 30, respectively.
4 the evaluation method is presented. 5 the methods used to determine the gas stream composition and the method of calculating the power consumption of recovery processes are described. 6 costs and cost relations for the reference plant and recovery equipment are presented. Subsequently the costs per tonne CO2 recovered are given for varying requirements concerning the purity of the product gas and recovery degrees. Finally, some cost reduction possibilities are discussed. Table 1. Characteristics of desulphurized flue gases of a 600 MWe coal-fired power plant operating at full capacity.
Before the simulation is started a number of targets are given that should be attained in the simulated process. For the base-case design of the CO 2 recovery system these targets are shown in table 2A. During the simulation these targets can be reached by varying the heat flows through the coolers, heat exchangers and reboiler, by varying the temperature in the reboiler and by varying the flow size through the scrubber, using an iterative operation of ASPEN. Table 1. Typical characteristics of desulphurized flue gases of a 600 MWe conventional coal-fired power plant operating at full capacity.