Download Carbon Dioxide Removal from Coal-Fired Power Plants by C. Hendriks PDF

By C. Hendriks

1. 1. Greenhouse gasoline emissions and weather swap . . . . . . . . . . . . . . three 1. 1. 1. Emissions and concentrations of greenhouse gases three 1. 1. 2. effect of accelerating greenhouse gases focus four 1. 2. thoughts to minimize carbon dioxide emissions five 1. 2. 1. Carbon dioxide elimination eight 1. three. Scope of the thesis 10 1. four. define of the thesis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . eleven 1. four. 1. common review procedure. . . . . . . . . . . . . . . . . . . . . . . 12 1. four. 2. a few notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . thirteen II. Simulation and optimization of carbon dioxide restoration from the flue gases of a coal-fired energy plant utilizing amines 14 summary 19 2. 1. creation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 2. 2. The chemical absorption strategy. . . . . . . . . . . . . . . . . . . . . . . . 22 2. 2. 1. common approach description. . . . . . . . . . . . . . . . . . . . . . . 22 2. 2. 2. different types of absorbent 23 2. 2. three. results of flue gasoline contaminants 24 2. three. Simulation of the scrubber in ASPEN PLUS . . . . . . . . . . . . . . . . . 25 2. three. 1. ASPEN PLUS for circulate 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 strength plant 35 2. four. 1. energy loss brought on by steam extraction 36 2. four. 2. strength stored via warding off preheating boiler feed water . . . 38 2. four. three. energy intake by means of 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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Furthermore, the authors include transport and disposal in their cost estimate. The investment costs for these activities amount to almost half the extra investment costs required for the CO 2 removal. 46 Carbon dioxide recovery using amines Table 9. Comparison of efficiencies and cost figures for CO2 recovery from flue gases of a conventional coal-fired power plant using a chemical absorption technique. 8 nd nd US$) [1991) Leci (1992) Koetzier et at. [1992) This study MEA optimized design a b Conventional absorber.

Table 6. Results as calculated for four different cases. Symbols are explained in table 4 and depicted in figure 6. 5. Cost analysis In this section, we compare the electricity production costs of a plant without CO 2 recovery (reference plant) with the electricity production costs of a new plant with CO 2 recovery. Both plants have the same fuel input. Due to the lower overall efficiency, the electricity production of the plant with CO 2 recovery will be less. The costs for the CO 2 recovery are caused by the reduction in the electricity production and by the investment costs and operation and maintenance cost of the CO 2 recovery unit, the steam extraction facilities and the compression unit.

1 MJ per kg CO 2 recovered. For DEA the temperature level in the regenerator is lower, so steam consumed in the reboiler can be of a lower value. 3. Optimization of the scrubber Two aspects are most important for the optimization of the scrubber: the flow of the solvent, and the reboiler duty. The solvent flow influences especially the investment costs of the scrubber, while the reboiler is the main energy consumer in the recovery process. Sensitivity analyses show that several measures can be taken to reduce the solvent flow and the reboiler duty.

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