Clean Coal Power Initiative (CCPI) -
Recovery Act: Hydrogen Energy California Project: Commercial Demonstration of Advanced IGCC with Full Carbon Capture
Project No: FE0000663
DOE is providing financial assistance under CCPI Round 3 to Hydrogen Energy California LLC (HECA), along with private capital cost sharing, to demonstrate an advanced coal-fired generating plant that co-produces electricity and fertilizer products. The project will employ integrated gasification combined cycle (IGCC) technology to nominally generate 400 megawatts (MWe) gross and up to 300 MWe (net) of electricity and produce approximately one million tons per year of fertilizer using a 75 percent sub-bituminous coal and 25 percent petroleum coke fuel blend. The fertilizer could be a combination of urea ammonium nitrate (UAN), urea, or other fertilizer equivalent, with the proportion dependent on market and commercial conditions. The CO2 off-take agreement contemplated by HECA will enable geologic storage of CO2 at a rate of approximately 2.6 million tonnes per year. The captured CO2 will be transported via pipeline to the Elk Hills oil field, approximately four miles from the power plant, for use in enhanced oil recovery (EOR). The design of these integrated facilities allows operating protocols that optimize: (1) the efficiencies of the physical plants while allowing steady state operation of the gasification unit; (2) the use of hydrogen to match product output volumes with demand under the terms of the urea/UAN and power off-take contracts; and (3) the use of the project’s capital investment.
The project will utilize the Mitsubishi Heavy Industry (MHI) two-stage oxygen-blown gasification technology and combined cycle power block. A Rectisol® acid gas removal system will be employed to achieve the intended CO2 capture efficiency. Water quality and availability issues are addressed by utilizing local brackish groundwater treated on-site to meet all industrial process water requirements. The brackish groundwater will be supplied from the Buena Vista Water Storage District (BVWSD), which is a local water district with some groundwater sources not suitable for agricultural use. The project will also incorporate a Zero Liquid Discharge (ZLD) system. All project wastewater, including wastewater generated from the IGCC, raw water treatment, and cooling tower blowdown will be directed to ZLD system(s) with the recovered water recycled for reuse in the process. This further reduces the water demands of the project.
Artists Rendition of HECA Polygen - 400MWe (gross) Power Plant with 1 million ton/yr fertilizer production facility.