Carbon-Capture-Technology--Eastern-Connecticut-State-University碳捕获技术课件.ppt

1、Carbon Dioxide Emission:24 billion tons per yearCARBON CAPTURE AND STORAGECarbon capture and storage is mostly used to describe methods for removing CO2 emissions from large stationary sources,such as electricity generation and some industrial processes,and storing it away from the atmosphere.Carbon

2、 Capture TechnologyPost-combustion captureReact the flue gas with chemicals that absorb CO2 and then heat the chemicals to release CO2.NOTE:Flue gas:Mixture of nitrogen,water vapor and 15%of Carbon dioxide.Carbon Capture Technology Oxy-fuel combustionUse pure oxygen to support the fossil fuel combus

3、tion.The flue gas is then mostly CO2 and water making it to separate easily.Carbon Capture TechnologyPre-combustion captureRemove carbon before combustion.By gasifying the coal through the reaction with more oxygen,it is possible to a mix of mostly CO2 and hydrogen.Transportation Many point sources

4、of captured CO2 would not be close to geological or oceanic storage facilities.In these cases,transportation would be required.The main form of transportation pipeline.ShippingCarbon Storage technologyGeological storageOceanic storageGeological storageOceanic StorageTwo storage mechanism has been pr

5、oposed Dissolving CO2 at mid-depth.Injecting the CO2 at depths in excess of 3 km,where it would form lakes of liquid CO2.Bellow 3 km liquid CO2 would be denser than sea water and would sink to the ocean floor.Monitoring Geochemical Monitoring Seismic Monitoring Non-Seismic Monitoring What might Carb

6、on Capture and Storage look like?The diagram is from a BP news release from the abandoned Miller project,UK North Sea,which is no longer available online.Carbon Storage Concerns CCS technologies actually require a lot of energy to implement and run transporting captured CO2 by truck or ship,require

7、fuel.Creating a CCS-enabled power plant also requires a lot of money.What happens if the carbon dioxide leaks out underground?We cant really answer this question.Because the process is so new,we dont know its long-term effects.Slow leakage would lead to climate changing.Sudden catastrophic leakage i

8、s dangerous,and causes asphyxiation.The more CO2 an ocean surface absorbs,the more acidic it becomes,higher water acidity adversely affects marine life.FutureGenFutureGen is a public-private partnership to build a first-of-its-kind coal-fueled,near-zero emissions power plant.It will use cutting-edge

9、 technologies to generate electricity while capturing and permanently storing carbon dioxide deep beneath the earth.The plant will also produce hydrogen and byproducts for possible use by other Where are the proposed CCS projects?geos.ed.ac.uk/sccs/storage/storageSites.html More links network.carboncapturejournal/video/2018151:Video:4342 futuregenalliance.org/about.stm