Energy

Turning Natural Gas Green

(Page 2 of 2)

  • Monday, May 4, 2009
  • By Tyler Hamilton

Atlantic Hydrogen is now working with Canada's largest natural-gas producer, Calgary-based EnCana Corp, on a scaled-up system that can operate at higher pressures. It has already demonstrated that the system can operate at 150 pounds per square inch with potential to go much higher. EnCana has already committed $3 million to the project. "They've had great success in getting up to the operating pressures we would need in our field applications," says Larry Weiers, EnCana's vice president of energy technology and research. "Our expectation is that this hydrogen-enriched natural gas will be a premium product, kind of like premium gasoline."

Some aren't convinced that the process has legs, though. Carbon-capture expert David Keith, a professor of chemical and petroleum engineering at the University of Calgary, says that the hydrogen-enriched natural gas will be less energy dense because of the precapture of the carbon. "You are throwing half the energy away in the carbon, so I don't think it will ever have wide application," he says.

But Weiers claims that the reduction in energy density is partially offset by efficiency gains during combustion--that is, the hydrogen enables a more complete burn of the gas. And while operation of CarbonSaver does require electricity, improvements to the plasma torch have made the process competitive with the energy required for steam methane reforming, which produces about 95 percent of the hydrogen used today in the United States and releases about eight tons of CO2 for every ton of hydrogen produced.

"The difference with us is we don't release CO2 from our process," says Wagner, adding that the benefits of the process are clear when looking at life-cycle emissions.

Felipe Chibante, director of the applied nanotechnology lab at the University of New Brunswick, has been contracted to analyze the physical properties of the carbon black that comes out of the plasma reactor. He says that the production and end use of the carbon black is what makes Atlantic Hydrogen's process most compelling when compared with other carbon mitigation approaches. "Your choice is to pay somebody to remove the CO2 and bury it and lose that value, or take that carbon to make a product. What you're doing is displacing the [conventionally produced]carbon-black product that does create CO2."

Chibante and his research team are working with carbon-black maker Columbian Chemicals to identify a market for Atlantic Hydrogen's carbon, which has "very interesting carbon nanostructures that we just don't see from industrial production," he says. An early study shows that the material has a high surface area and thin chicken-wire structures called graphene stacks, making it potentially ideal in the production of high-performance batteries and ultracapacitors and for structurally reinforced products.

Print

Related Articles

Natural Gas Changes the Energy Map

Vast amounts of the clean-burning fossil fuel have been discovered in shale deposits, setting off a gas rush. But how it will affect our energy use is still uncertain.

Mining "Ice That Burns"

Newly discovered methane hydrate reserves deep in the ocean show promise for mining.

Natural Gas to Gasoline

A firm claims to have a cheaper way to harness natural gas.

Close Comments

To comment, please sign in or register

Forgot my password

jdm

2 Comments

  • 1016 Days Ago
  • 05/04/2009

Teaser

So, Atlantic Hydrogen has a reactor to extract high-value carbon black from CH4.

How about a reactor to extract high-value carbon black from CO2 ?


Reply

DJTal

154 Comments

  • 1015 Days Ago
  • 05/05/2009

GAT

This technology is like the idea suggested by the Drexel plasma institute using the Gliding Arc Tornado, where methane or other hydrocarbons are converted into hydrogen and carbon suboxides. The GAT operates at lower lower temperature and has less electrical input, and the chemistry going on in the plasma is more controllable.

Reply

killian

74 Comments

  • 1011 Days Ago
  • 05/09/2009

it would help to have some numbers

How much energy is used by the process?
If they claim the H2 improves later CH4 + H2 combustion, what are the numbers?
The heat of combustion for CH4 is 890 kJ/mol, whereas the heat of combustion for 2 mol of H2 is 572 kJ, so there is indeed a lot of lost energy from conversion itself, not even including the plasma torch.
Is NOx produced by the process?

Reply

Advertisement

MAGAZINE

Can We Build Tomorrow's Breakthroughs?

Manufacturing in the United States is in trouble. That's bad news not just for the country's economy but for the future of innovation.

Videos

Printing Parts

More

Advertisement

Technology Review Lists

TR50

Our list of the 50 most innovative companies, including the following:

Applied Materials

Crowdcast

Suntech

Cotendo

More

Advertisement

Facebook

Advertisement