By L Zheng
Oxy-fuel combustion is at present thought of to be one of many significant applied sciences for carbon dioxide (CO2) seize in strength crops. the benefits of utilizing oxygen (O2) rather than air for combustion comprise a CO2-enriched flue fuel that's prepared for sequestration following purification and occasional NOx emissions. This publication significantly experiences the elemental rules, methods and expertise of oxy-fuel combustion, together with complex recommendations for its implementation.
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Additional info for Oxy-fuel combustion for power generation and carbon dioxide (CO2) capture
It is important for operators to pay close attention to maintaining stable flames during load changes, which may require adjusting oxygen flow distribution and burner swirl settings. Obviously, changes in oxygen flow rates must be met with ASU operation. Modern ASUs allow a good degree of load changes and these load changes can happen relatively promptly at about 3%/min. With more sophisticated ASU multitrain design and control system configurations, a faster load change rate can be achieved, sufficient for normal power plant operations.
Scaling the CPU to multiple 4000 tonnes per day CO 2 trains. • Performance of the large-scale partial condensation, auto-refrigeration, CO 2 purification process. 3 Oxy-coal carbon dioxide (CO 2) capture and storage (CCS) cost estimates and comparisons with post- and pre-combustion CO 2 capture As the design and cost bases for power plants can vary widely, it is very difficult to compare costs produced from different studies. The most useful cost studies are those that compare technology options with a common baseline.
5%/min in a capacity window from 60% to 100%. The above discussion assumes that the oxy-fuel plant is built to accommodate peak load. However, cases can be made to build an oxy-fuel power plant such that the peak load can be met by shutting down the flue gas compression train and venting the flue gas to the stack without CO 2 capture. In this scenario, the size of the ASUs can be reduced, potentially resulting in significant cost savings. With this kind of plant design, the flue gas compression trains can be progressively and selectively shut down to meet the load demand increases beyond the base load.
Oxy-fuel combustion for power generation and carbon dioxide (CO2) capture by L Zheng