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 July 31, 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 July 31, 2014).

Share This




More Matter & Energy News

Thursday, July 31, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Britain Testing Driverless Cars on Roadways

Britain Testing Driverless Cars on Roadways

AP (July 30, 2014) — British officials said on Wednesday that driverless cars will be tested on roads in as many as three cities in a trial program set to begin in January. Officials said the tests will last up to three years. (July 30) Video provided by AP
Powered by NewsLook.com
7 Ways to Use Toothpaste: Howdini Hacks

7 Ways to Use Toothpaste: Howdini Hacks

Howdini (July 30, 2014) — Fresh breath and clean teeth are great, but have you ever thought, "my toothpaste could be doing more". Well, it can! Lots of things! Howdini has 7 new uses for this household staple. Video provided by Howdini
Powered by NewsLook.com
Amid Drought, UCLA Sees Only Water

Amid Drought, UCLA Sees Only Water

AP (July 30, 2014) — A ruptured 93-year-old water main left the UCLA campus awash in 8 million gallons of water in the middle of California's worst drought in decades. (July 30) Video provided by AP
Powered by NewsLook.com
Smartphone Powered Paper Plane Debuts at Airshow

Smartphone Powered Paper Plane Debuts at Airshow

AP (July 30, 2014) — Smartphone powered paper airplane that was popular on crowdfunding website KickStarter makes its debut at Wisconsin airshow (July 30) Video provided by AP
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