HydroMax(R), an advanced gasification technology being developed by Diversified Energy Corporation (DEC) and licensed from Alchemix Corporation, was selected by the Department of Energy (DOE) from a pool of 1,318 applicants for research and technology transfer funding.
DEC has teamed with CertainTeed Gypsum, one of North America's leading gypsum wallboard manufacturers for the project with the goal of reducing and stabilizing natural gas costs. DEC will conduct tests, design activities, and commercialization planning focused on utilizing HydroMax(R) to gasify coal for the production of synthetic gas for industrial applications.
The HydroMax(R) technology is based on a molten-metals reactor approach. It offers several critical advantages for industrial customers such as CertainTeed Gypsum, including scaling to the 5-100 MWe output range, a compact size for simple integration, hydrocarbon input flexibility, high reliability, substantive reductions in capital and O&M costs compared to traditional gasifiers, and high efficiencies. Previous technology development includes multiple bench-scale tests along with extensive analyses and modeling.
From the company website:
HydroMax differs substantially from traditional gasification technologies, whose basic approach is to create synthetic gas by partially combusting coal in an oxygen-starved environment. By leveraging proven processes from the metals and mining industries, the HydroMax technique intends to break the status-quo paradigm by delivering gasification systems at up to 50% the cost of traditional systems, with 80+% efficiency, and demonstrating high availability.
Using two distinct steps, the HydroMax process begins with a molten iron/tin (FeSn) bath heated to 1300° C. In Step A, steam is injected into the bath which is then thermo-chemically split resulting in H2 gas (released) and oxidized iron. After the Fe is oxidized, steam injection ceases and a carbon source (coal, petroleum coke, tires, biomass, etc) is injected into the reactor. Carbon has a high affinity to oxygen and reduces the oxidation of Fe to its pure form and produces a CO-rich syngas which is released for use.
Good application for Nuclear Pebble heat.
Posted by: Jim Holm | July 11, 2007 at 08:35 AM
The outlet temperature of a PBMR is only about 900°C.
Posted by: Reality Czech | July 11, 2007 at 04:20 PM
Coal costs about 1/4 as much as oil per btu, and about 1/3 as much as natural gas. Coal has wanted to break out into these energy markets, but hasn't been able to. Very large size, for efficiencies of scale, has been the main barrier to CTL. CO2 emissions have been another barrier.
These would be between .05% and about 2% of the size of a CTL plant. Is this the way coal will break out, in many small affordable units that fly under the CO2 radar?
Posted by: Nick G | July 13, 2007 at 06:05 PM
The outlet temperature of a PBMR is only about 900°C.
I doubt the steam is being injected at 900 C (or 1300 C) anyway. The energy to drive the process is likely coming from some additional air injected along with the carbonaceous material. If some of the energy could instead be provided by preheating the steam (or air or carbonaceous fuel), this could improve the carbon efficiency of the process.
Posted by: Paul Dietz | July 25, 2007 at 12:13 PM
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Gasification can play a significant role in delivering a sustainable energy economy and is therefore one of the most technically and economically convincing energy possibilities for a carbon neutral economy.
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