THE HISTORY OF OUR BIOGAS FACILITY
In 1997 Alliant Energy entered into partnership to build a biomass-to-electricity plant in Cedar Rapids, Iowa. Alliant spent $20 million constructing the plant, testing the equipment, and putting it into operation with a biomass management group. Alliant Energy successfully created electricity from biomass from 1998 through 2005. In 2005 Alliant Energy sold the plant to one of their partners. In 2011 Permeate Refining agreed to provide the capital to operate the plant and bring the plant back into full productivity in exchange for ownership and management control.
From 2010 through 2013, Permeate Refining and its partners committed millions of dollars to bring the plant back into full productivity.
The Permeate team believes that the gasification technology offers significant upside opportunities. China has built 29 new gasification plants since 2004, with many more planned. The U.S. has built two such plants since 2004 that remain in operation.
BIOGAS FACILITY CURRENT OPERATIONS
The biogas plant is comprised of three buildings sitting on 6.5 acres located at 4120 Booth Street S.W., Cedar Rapids, Iowa,. It operates under four separate buildings:
THE MAIN PROCESSING UNITS CONSIST OF:
The biogas plant utilizes a fluidized bed gasification technology as its primary means of converting suitable waste products to flammable gas. The biogas plant produces electricity from a broad range of agricultural residues and biomass-based products. The plant serves as a strategic platform for future growth as it is permitted, emission tested (stack testing), fully staffed and operating 24/7. As an integrated biorefinery, The biogas plant generates a synthetic gas (syngas) for heat and power with the ability to consume up to 150 tons of biomass on a daily basis.
Presently, electrical power generated by the facility is sold to the North American power grid under contract to Alliant Energy. With additional processing and upgrades this same gas can be used to create certain transportation fuels.
The biogas plant’s experience and permits have allowed it to determine which feedstock are better for electrical and/or steam re-use production. It has developed proprietary systems which address specifics related to each feedstock and give it an advantage in gas conversion, emission controls, and feedstock and gas chemistry analysis in real-time.
While the majority of the gasification waste-to-energy companies remain in the untested and in the infancy stage, The biogas plant has utilized internal capital and experience to create a leading edge waste-to-energy facility.
The existing facility has strategic advantages with access to top-tier customers that rely on The biogas plant to dispose of their waste products. The biogas plant also provides a platform for further commercializing new and upcoming renewable energy technologies.
Gasification can be termed both art and science. The biogas plant has achieved the following:
The following waste fuels have been approved for gasification and conversion to electricity:
INFRASTRUCTURE FOR PERMEATE'S BIOGAS PLANT
Permeate’s biogas plant has the expertise to further develop:
PERMEATE’S BIOGAS PLANT’S GAS TURBINE TECHNOLOGY
Permeate’s biogas plant is an Advanced Integrated Gasification Combined Cycle (IGCC) system:. In an IGCC system power generation is the focus. The resultant syngas is combusted (burned) in high efficiency gas turbines to generate electricity with very low emissions. The turbines used in these plants are derivatives of proven, natural gas combined-cycle turbines that have been specially adapted for use with syngas. For IGCC plants that include carbon capture, the gas turbines must be able to operate on syngas with higher levels of hydrogen. Although modern state-of-the- art gas turbines are commercially ready for this “higher hydrogen” syngas, work is on-going in the United States to develop the next generation of even more efficient gas turbines ready for carbon capture-based IGCC.
Permeate’s biogas plant utilizes a Heat Recovery Steam Generator. Hot gas from each gas turbine in an IGCC plant will “exhaust” into a Heat Recovery Steam Generator (HRSG). The HRSG captures heat in the hot exhaust from the gas turbines and uses it to generate additional steam that is used to make more power in the steam turbine portion of the combined-cycle unit.