I am speaking today with Vince Memmott, Founder and President of Hydrogen Economy LLC, which is working to commercially develop a High Temperature Steam Electrolysis (HTSE) technology that was developed by Ceramatec, a Salt Lake City technology company, and Idaho National Lab (INL).
At GHGblog.com I am interested in technologies that lead to real breakthroughs.
Vince believes HTSE can be used for a variety of uses to produce hydrogen for commercial uses as an alternative method to making hydrogen through steam-methane (natural gas) reforming (SMR).
HTSE can replace conventional methods of creating hydrogen, a feedstock in the petroleum refining industry, the ammonia industry and eventually as a source of hydrogen for motor vehicles. It could make the need for carbon capture from coal fired-power stations obsolete and it works well with renewable technologies producing carbon neutral hydrogen.
Q1: GHGblog.com:
What is High Temperature Steam Electrolysis (HTSE)
A: Vince Memmott:
A water molecule can be separated into its atomic constituents of hydrogen and oxygen using electrical energy. This is referred to as water electrolysis. Normally water electrolysis is quite energy inefficient. The hydrogen that is recovered only contains about 75% of the energy that is required for its production through electrolysis. High Temperature Steam Electrolysis performs this electrolysis process using steam at temperatures in excess of 600 degrees Centigrade. At this elevated temperature, the electrolysis process is considerably more energy efficient.
Q2: GHGblog.com:
What are the main uses of HTSE?
A: Vince Memmott:
The most obvious use of HTSE is to produce hydrogen for commercial use. The demand for hydrogen is growing rapidly in the United States and in the world. In the United States the largest consumer is the petroleum refining industry where hydrogen is an essential feedstock in producing clean fuels and in converting heavier crude oil to clean fuels. This demand for hydrogen is growing as cleaner fuels are mandated and as crude oil feedstocks trend heavier. Worldwide, the largest hydrogen consumer is the ammonia industry which feeds fertilizer production. Fertilizer demand is expected to grow as the world works to increase its food supply.
There is also considerable interest in migrating to hydrogen as a motor vehicle fuel because of its clean burning characteristics. Such a migration will significantly increase the demand for hydrogen production.
Unfortunately, hydrogen is not found in any meaningful quantity in nature and must be produced. Hydrogen is currently produced in commercial quantities by steam-methane reforming (SMR). This requires significant quantities of natural gas. Natural gas is used as the source of methane and is commonly used to produce the steam. Increased hydrogen production will put additional pressure on the already tight supply of natural gas.
Another exciting use for HTSE is the co-electrolysis of steam and carbon dioxide. In this mode, a mixture of steam and carbon dioxide is electrolyzed to oxygen and a mixture of hydrogen and carbon monoxide referred to as syngas. Syngas is used commercially to produce a number of valuable products, including synthetic petroleum. Co-electrolysis could be used in conjunction with coal fired power, or any industry that produces carbon dioxide, to convert carbon dioxide to syngas, thereby reducing the emission of carbon dioxide. Hydrogen Economy LLC believes that this application can be developed to provide a superior alternative to sequestration of carbon dioxide for carbon management.
Q3: GHGblog.com
Could HTSE be used as an alternative to carbon capture popular in countries where coal - fired power stations are still being built especially in the UK, China and Australia?
A: Vince Memmott:
Yes, HTSE can be used to convert carbon dioxide into useful products rather than sequestering it deep below ground. It provides an opportunity to significantly reduce the carbon emissions from power plants and any other industry that generates carbon dioxide.
Synthetic petroleum can be produced from Syngas using Fischer Tropsch synthesis technology. HTSE can be commercially developed to provide a superior alternative to sequestration of carbon dioxide for carbon management.
While carbon management using HTSE can be economical under these conditions, if carbon free electricity is used, synthetic petroleum can produced from this technology without carbon emissions and will therefore result in a net reduction of carbon emissions.
Q4: GHGblog.com
What is the cost of High Temperature Steam Electrolysis (HTSE) technology?
A: Vince Memmott:
Because HTSE uses electricity, its cost is highly dependent upon the cost of electricity. Our current economic model shows that at a power cost of $70 (US) per megawatt hour, hydrogen production from HTSE will compete favorably with hydrogen production from SRM. At $70 (US) per megawatt hour, synthetic petroleum can be produced at about $100 (US) per barrel. $70 per megawatt hour is a reasonable power cost basis. Current estimates for new nuclear power are in the range of $50 per megawatt hour. Alternative energy costs are typically higher than nuclear power, but these sources will be evaluated on a case by case basis.
A particular opportunity exists for utilizing off peak power. Most power plants adjust their power output to meet the daily demand cycle of the power grid. When integrated with HTSE, the power plant could operate at a constant output. As the grid demand drops, power would be diverted to the HTSE module. Such off-peak power is normally considered less expensive making HTSE even more economically attractive.
Q5: GHGblog.com.
How does HTSE compare in cost to carbon capture?
A: Vince Memmott:
It is difficult to compare the cost of HTSE to carbon capture and sequestration. HTSE produces useful products from carbon dioxide while carbon capture merely removes carbon dioxide from the carbon cycle. Perhaps the best way to determine the economic value of HTSE is to compare the cost of its products to the market alternatives. As I mentioned earlier, synthetic petroleum can be produced for about $100 (US) per barrel. In today’s world this is an economically attractive use of HTSE technology.
Q6: GHGblog.com
Can HTSE be used with renewable technology as well?
A: Vince Memmott:
HTSE can be integrated with any source of steam and electricity. When power from nuclear, wind, solar thermal, geothermal or any other source of carbon free electricity is used, hydrogen produced from this technology can be certified as “carbon free” production.
Q7: GHGblog.com
What stage of development is HTSE?
A: Vince Memmott:
This technology has been proven through a rigorous bench scale testing programs. Ongoing bench scale tests are continuing to improve this technology. We are currently beginning the effort to commercially develop this technology. This will require converting the bench scale experience to a commercial scale production facility.
Q8: GHGblog.com
Are you looking for further investment?
A: Vince Memmott:
Yes, Hydrogen Economy LLC is seeking capital for the commercial development of HTSE. We are also looking for strategic corporate associates to participate in this development. We believe that there is a significant opportunity to license this technology worldwide.
Q9: GHGblog.com
How do people contact you?
A: Vince Memmott:
I can be contacted at vmemmott@gmail.com.