Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Breakthrough for future exploration unrecoverable gas reserves

05.12.2006
Centrifugal gas separator efficiently cleans contaminated gas streams

Huge underground gas reserves, up to 16% of the total reserves, remain unused. The natural gas in these fields is too contaminated for exploitation. With existing technology, cleaning these fields is much too costly. As a result of research done by Ralph van Wissen MSc these fields may in the future become more profitable. In cooperation with Shell, Van Wissen developed a cleaning technique based on the centrifugal separation of gasses. He further built a prototype that can be scaled up to be used in producing natural gas. Van Wissen has obtained a doctorate from the Eindhoven University of Technology on Monday 4 December.

Depleted gas reserves

According to most predictions, the world’s gas reserves will be depleted within this century. Therefore, the discovery of new reserves and the full exploitation of existing reserves are high on the agenda of the big oil and natural gas companies. It is almost impossible to convey the economic value of 16% of the world’s reserves. They represent more that 360 times the annual natural gas production of Shell, Exxon, and BP put together.

Relatively clean gas mixture

These unrecoverable gas reserves are contaminated with CO2 and H2S (hydrogen sulphide). Current cleaning processes, which use selective absorption techniques and membranes technology, are too limited. If the concentration of CO2 and H2S is more than 15%, more energy is lost in these cleaning processes than is gained in natural gas. With the new technique developed by Van Wissen it is possible to clean highly contaminated natural gas (containing 15% to 70% CO2 and H2S) and turn it into a relatively clean gas mixture with only 5% contamination. The resulting energy loss is only a very small percentage. Conventional cleaning processes can be used without much extra costs or waste of energy to further purify this mixture.

Centrifugal gas separator

The trick of the trade is the centrifugal gas separator’s expansion tank. In this tank the gas mixture expands very fast, resulting in the condensation of CO2 and H2S particles. This condensate can be compared to the small cloud of vapor that appears when opening a bottle of champagne. The natural gas and the condensed droplets subsequently flow through a rotating cylinder. In this cylinder, which is made up of many thin channels, the centrifugal powers press the droplets to the outer side of the channels. The CO2 and H2S can then be relatively easily separated from the natural gas.

Prototype

The prototype Van Wissen built can process a gas stream of 60 m3 an hour. Very little, compared to the more than a thousand times larger output of an average natural gas field. That is why Van Wissen paid special attention to the proper dimensioning of his prototype to enable up scaling, so it can be used in actual practice. He succeeded and Shell plans to further develop this technology on the basis of his prototype.

Xavier Theunissen | alfa
Further information:
http://www.tue.nl

More articles from Ecology, The Environment and Conservation:

nachricht Bioinvasion on the rise
15.02.2017 | Universität Konstanz

nachricht Litter Levels in the Depths of the Arctic are On the Rise
10.02.2017 | Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung

All articles from Ecology, The Environment and Conservation >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Stingless bees have their nests protected by soldiers

24.02.2017 | Life Sciences

New risk factors for anxiety disorders

24.02.2017 | Life Sciences

MWC 2017: 5G Capital Berlin

24.02.2017 | Trade Fair News

VideoLinks
B2B-VideoLinks
More VideoLinks >>>