Technology
Helbio’s technology is based on proprietary and patented reactor – catalyst configurations for reformation processes. The reactor configurations utilize the concept of the Heat-Integrated Wall-Reactor (European Patent 94600005.6/13.07.94. U.S.A. Patent No. 6, 605 376 ( Aug. 12 .2003 ) which offers very rapid heat exchange characteristics.
One of the major advantages of the company are the novel, proprietary catalysts that have been developed for the reformation of fuels, either in the steam reforming or the partial oxidation modes. These catalysts exhibit improved characteristics with respect to activity, selectivity towards hydrogen and thermal stability. They are used in the form of thin films deposited on metallic surfaces, or deposited on other structural forms, such as monoliths and foams.
Helbio has also developed novel, non-pyrophoric and highly active catalysts for the water gas shift (WGS) reaction and for the selective methanation of CO. The whole series of catalysts enable the efficient production of high purity hydrogen which is suitable for use in low- temperature fuel cell applications.
Of primary interest to Helbio is the production of renewable hydrogen, primarily by utilization of biomass components and derivatives. Among threes are bioethanol, which is produced by fermentation of biomass, and biogas which is produced by anaerobic digestion of biomass. Significant quantities of biogas are produced in waste water treatment plants and in municipal solid waste sites. A process for the production of both biofuels is proposed, as shown in the diagram.
GH2™ multi-fuel processor
The GH2 is a commercial prototype multi-fuel processor representing the culmination of HELBIO’s technology development to date. The processor has a nominal capacity of 10 Nm3/h of H2. Although primarily designed for ethanol, it also operates with natural gas and LPG. When integrated with a PEM fuel cell, it will produce 10 kW electric energy and 17 kW thermal energy.
This unit is fully integrated thermally and thus achieves the highest possible thermal efficiency. The fuel reformer is of the “heat integrated wall reactor”-type and is operating in the steam reforming mode. The unit utilizes catalysts which have been developed by HELBIO. The fuel processor has been in operation with ethanol since December 2004. The performance has been excellent so far.
Ethanol Reforming
GH2 is the only commercial apparatus producing hydrogen by steam reforming of bio-fuels and especially ethanol (renewable hydrogen). Biofuels are environmentally friendly since they are totally renewable. They do not pollute and do not contribute to the build-up of CO2 in the atmosphere (CO2 is the major contributor to the green house effect that causes major climatic changes in our planet). The CO2 produced during the biofuels utilization is the same one as used by the plants for their growth in the biomass production phase. There is, then, a practically closed carbon cycle with no negative impact to the environment. Furthermore, biofuels can be produced locally, affecting positively the energy supply security balance.
Ethanol is an easily transportable, safe to handle and store, non-toxic liquid fuel that can be used everywhere since mishaps do not lead to significant environmental damage as is the case with oil. Ethanol is already a major fuel in Brazil and in the USA and is making its way to Europe. Its current price is significantly lower than that of gasoline on a heating value equivalent while it qualifies for CO2 credits.
HELBIO has developed the technology in terms of catalysts, reactors and processes for the efficient production of hydrogen from ethanol. The process can operate either in steam reforming or autothermal mode. The technology for ethanol steam reforming is incorporated in GH2.
Even though steam reforming is a more efficient process, there are times when the dynamics of the process are more important than the ultimate efficiency and autothermal reforming is the preferred mode of operation. Such is the case for mobile applications like APU’s and vehicle propulsion trains. HELBIO has developed advanced catalysts and reactors for autothermal reforming of ethanol for these applications.
Natural Gas and Bio-Gas Reforming
Natural gas is still the preferred raw material for hydrogen production. Biogas (mostly methane and CO2) is now emerging as a renewable, low cost source of hydrogen.
Prof. Verykios has been developing fuel processing and reformate gas conditioning technology for methane for the last fifteen years. He has discovered novel catalytic materials and has developed novel reactor configurations and process schemes for the reformation of methane either with steam (both allothermal and autothermal) or with CO2 (dry reforming).
The technology has been demonstrated both in laboratory micro-units and in pilot plants and has led to a number of papers published and a patent awarded. The technology has been incorporated into the GH2 multi-fuel processor.
LPG Reforming
LPG (propane, butane) is a widely available and common fuel that can be processed for hydrogen production. It benefits from its worldwide distribution network and from people’s familiarity with its use. HELBIO has developed LPG processing technology and is targeting such processors to industrial hydrogen users, remote CHP users and mobile APUs.
LPG Reforming
LPG (propane, butane) is a widely available and common fuel that can be processed for hydrogen production. It benefits from its worldwide distribution network and from people’s familiarity with its use. HELBIO has developed LPG processing technology and is targeting such processors to industrial hydrogen users, remote CHP users and mobile APUs.
Catalysts
Development of novel catalytic materials has been the hallmark of Prof. Verykios for the last 25 years. The new processes developed opened new avenues for research into such materials for hydrogen production from bio-fuels as well as conventional fuels such as natural gas, LPG etc.
The successful research produced a series of proprietary catalysts for the reformation of ethanol and other fuels in both steam and autothermal reforming mode. These catalysts exhibit improved characteristics with respect to activity, selectivity towards hydrogen, thermal and long term stability. They have been tested at all scales, from laboratory micro-units via a pilot plant to a demonstration unit proving their efficiency.
Industrial applications require catalysts to be deposited on structural supports able to withstand thermal and mechanical shocks. New methods and techniques were developed to deposit the catalysts on monoliths, pellets and ceramic foams able to cover the requirements of most applications. The latest development is the coating of metallic surfaces with catalysts used in HIWAR and in GH2.
Water-Gas-Shift and CO Methanation Catalysts
In addition to the reforming catalysts, HELBIO is also developing advanced catalysts for the purification of the hydrogen rich reformate stream as to meet the requirements for use in all types of fuel cells. Specifically, novel, non-pyrophoric and highly active catalysts were developed for the high–temperature and low–temperature water gas shift (WGS) reactions which offer significant advantages over current catalysts that are pyroforic and require special handling and pre-conditioning before use.
For the final CO minimization, effective and selective catalysts for the conversion of CO to methane are under development.
The whole series of catalysts enable the efficient production of high purity hydrogen that is suitable for use in low- temperature fuel cell applications.
Green Hydrogen
Prof. Verykios’ research on pollution abatement technologies provided the inspiration for the development of more environment friendly energy technologies. By this time, the mid 1980’s, hydrogen was discussed as the energy carrier of the future. Combining the two, the concept of green hydrogen was born. This concept, has been awarded International Patent PCT 9801000180/22.5.98 and a number of distinctions.
The basic principle is that a number of bio-fuels, such as ethanol, bio-gas, bio-diesel, pyrolysis oil etc., can be produced from biomass by simple biological or thermal processes. These bio-fuels can be processed in the appropriate fuel processors to produce hydrogen. Feeding the hydrogen to a fuel cell co-generates electricity and heat.
System Heat Integration
A major advantage of HELBIO´s products is the advanced system designs developed. The overall efficiency of the hydrogen production units depends strongly on the efficient heat management of the unit. The designs incorporate very high degrees of heat integration enabling the reuse of all available heat either in the process (matching of cooling and heating streams) or as steam or hot water. The final result is very high overall efficiency for the fuel processor.
System miniaturization and optimization
Carrying development further, HELBIO aims to minimize the size of the units and to simplify their design and construction in order to reduce cost and optimize system performance based on each targeted application. The goal is to develop units that can be mass produced at low cost and that meet or exceed user requirements for any application.
System miniaturization and optimization will allow the company to enter new markets such as mobile power generators and small units for mobile applications. One of the target markets is on-board auxiliary power units (APU) for leisure applications such as campers and boats.
Coming Soon!