Featured Research

from universities, journals, and other organizations

On the way to CO2-free power plants

Date:
November 7, 2010
Source:
Technische Universität Darmstadt
Summary:
A new pilot power plant in Germany will capture carbon dioxide contained in flue gases. Researchers plan to utilize the plant for investigating two innovative methods for CO2 capture that require less energy and lower operating costs than earlier approaches.

In the experimental plant, scientists at TU Darmstadt will explore two novel processes for CO2 capture.
Credit: © Thomas Ott / TU Darmstadt

The Technische Universität Darmstadt has dedicated a pilot plant for capturing carbon dioxide contained in flue gases of power plants. Its Institute for Energy Systems and Technology plans to utilize the plant for investigating two innovative methods for CO2 capture that require less energy and lower operating costs than earlier approaches.

Combustion of fossil fuels, such as coal, fuel oil, or natural gas, liberates large quantities of carbon dioxide, a gas that significantly affects global climate. A key technology that would reduce emissions and lead to more environmentally friendly power plants is the capture and storage of carbon dioxide from flue gases of power plants (carbon capture and storage (CCS)). CCS might be able to reduce CO2 emissions resulting from the employment of fossil fuels for power generation and other uses in industry to near zero and thereby contribute to reducing greenhouse-gas emissions. Earlier approaches to CO2‑capture require expending significantly more energy and entail greatly increased operating costs, which raises questions regarding their efficiency and acceptance. The TU Darmstadt's Institute for Energy Systems and Technology's new pilot plant will be utilized for investigating two new methods for CO2 capture that will allow nearly totally eliminating CO2 emissions and require virtually no additional energy input and entail only slight increases in operating costs.

Over the next two years, the institute's director, Prof. Dr.-Ing. Bernd Epple, and his 26 coworkers will be investigating the "carbonate looping" and "chemical looping" methods for CO2 capture. Both methods employ natural substances and reduce the energy presently required for CO2‑capture by more than half. As Epple put it, "These methods represent milestones on the way to CO2‑free power plants. They might allow coal-fired, oil-fired, and natural-gas-fired power plants to reliably and cost-effectively generate power without polluting the environment."

The carbonate looping method involves utilizing naturally occurring limestone to initially bind CO2 from the stream of flue gases transiting power plants' stacks in a first-stage reactor. The resultant pure CO2 is reliberated in a second reactor and can then be stored. The advantage of the carbonate-looping method is that even existing power plants can be retrofitted with this new method.

On new power plants, the chemical looping method will even allow capturing CO2 with hardly any loss of energy efficiency. Under this method, a dual-stage, flameless, combustion yields a stream of exhaust gases containing only CO2 and water vapor. The CO2 can then be captured and stored.

The investigations of these new methods are being supported with grants totaling seven million Euros from the European Union, the German Federal Ministry for Economic Affairs, and various industrial partners. Due to the pilot plant's height, the TU‑Darmstadt has built a new, twenty-meter high experimentation hall on its "Lichtwiese" campus to house it. Construction of the new hall and pilot plant took twenty months. The plant has already demonstrated its ability to bind CO2 in conjunction with initial trial runs.


Story Source:

The above story is based on materials provided by Technische Universität Darmstadt. Note: Materials may be edited for content and length.


Cite This Page:

Technische Universität Darmstadt. "On the way to CO2-free power plants." ScienceDaily. ScienceDaily, 7 November 2010. <www.sciencedaily.com/releases/2010/11/101103082306.htm>.
Technische Universität Darmstadt. (2010, November 7). On the way to CO2-free power plants. ScienceDaily. Retrieved April 24, 2014 from www.sciencedaily.com/releases/2010/11/101103082306.htm
Technische Universität Darmstadt. "On the way to CO2-free power plants." ScienceDaily. www.sciencedaily.com/releases/2010/11/101103082306.htm (accessed April 24, 2014).

Share This



More Matter & Energy News

Thursday, April 24, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Next Stop America for France's TGV?

Next Stop America for France's TGV?

Reuters - Business Video Online (Apr. 24, 2014) — General Electric keeps quiet on reports it's in talks to buy French turbine and train maker Alstom. Ivor Bennett reports on what could be an embarrassing rumour for the French government, with business-friendly reforms proving a hard sell. Video provided by Reuters
Powered by NewsLook.com
Raw: Obama Plays Soccer With Japanese Robot

Raw: Obama Plays Soccer With Japanese Robot

AP (Apr. 24, 2014) — President Obama briefly played soccer with a robot during his visit to Japan on Thursday. The President has been emphasizing technology along with security concerns during his visit. (April 24) Video provided by AP
Powered by NewsLook.com
Obama Encourages Japanese Student-Scientists

Obama Encourages Japanese Student-Scientists

AP (Apr. 24, 2014) — President Obama spoke with student innovators in Japan and urged them to take part in increased opportunities for student exchanges with the US. (April 24) Video provided by AP
Powered by NewsLook.com
UN Joint Mission Starts Removing Landmines in Cyprus

UN Joint Mission Starts Removing Landmines in Cyprus

AFP (Apr. 23, 2014) — The UN mission in Cyprus (UNFICYP) led a mine clearance demonstration on Wednesday in the UN-controlled buffer zone where demining operations are being conducted near the Cypriot village of Mammari. Duration: 01:00 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins