Huaneng GreenGen IGCC Project (Phase 3)
Capture: China Huaneng Group (52 per cent interest), seven Chinese energy enterprises (each 6 per cent interest) and Peabody Energy (6 per cent interest)
Transport and Storage: Not specified
LOCATION: Lingang Industrial Park, Binhai New Area, Tianjin, China
CO2 capture source: 400 MW demonstration integrated gasification combined cycle (IGCC) power unit in the Binhai New Area, Tianjin
CO2 storage site: All storage option types are under evaluation, with enhanced oil recovery (EOR) opportunities at the Tianjing Dagang oil field important
INDUSTRY (FEEDSTOCK): Power generation (sub-bituminous coal)
OVERALL PROJECT LIFECYCLE STAGE: Evaluate
CO2 CAPTURE CAPACITY VOLUME: 2 million tonnes per annum (Mtpa)
CAPTURE TYPE: Pre-combustion capture (gasification)
CAPTURE METHOD: Absorption chemical solvent-based process (Amine)
NEW BUILD OR RETROFIT: New build
CO2 CAPTURE START DATE: 2020
PRIMARY STORAGE OPTION: EOR important with onshore depleted oil and gas reservoirs and deep saline aquifer storage options also under review
STORAGE FORMATION AND DEPTH: 3,000 metres / 9,300 feet underground
TRANSPORTATION TYPE: Pipeline (onshore to onshore)
TRANSPORTATION DISTANCE TO STORAGE SITE (LENGTH OF PIPELINE): 50-100 km / 30-60 miles to Dagang Oil field (EOR option), 250-300 km / 150-180 miles to deep saline aquifer storage options
GreenGen Ltd. Co. China was established by the China Huaneng Group and seven other Chinese state-owned companies in January 2006. Peabody Energy joined the consortium in December 2007 as the only non-Chinese participant in the program.
The goal of the GreenGen program in Tianjin is to develop a large-scale IGCC–CCS demonstration project in China. The program is being carried out in three phases.
The first phase (Phase I) of the program involves the construction and operation of a 250 MW IGCC power plant, the first IGCC facility of such size in China. Equipment is sized for coal gasification of 2,000 tonnes per day of pulverized coal. Construction of the plant began in 2009 and was completed in 2012. Since that time commissioning of the individual components has been underway in moving to steady-state commercial operation. Latest information indicated that the plant has realised steady operation at high capacity (maximum 92% of design) for 29 consecutive days (Xu Shisen, Moving Forward with the Huaneng GreenGen IGCC Demonstration, CONERSTONE magazine, posted September 2014).
The second phase (Phase II) of the program involves a number of R&D and development activities:
- Carry out trial operations and optimisations to improve existing systems (safety, stability, reliability) within the 250 MW IGCC power plant
- Development of a pilot-scale system that will draw about 7% of the syngas from the IGCC power plant, shifts carbon monoxide (CO) and water (H2O) to CO2 and H2, and then separates the CO2 from the H2 after desulphurisation. The captured CO2 would be liquefied and used for EOR purposes. The amount of CO2 to be captured through this pilot plant is estimated at between 60,000-100,000 tonnes per annum. It is reported that construction of Phase II facilities began in early 2014 (Xu Shisen, ibid)
- Conduct feasibility studies for GreenGen Phase III
The third phase (Phase III) of the program involves construction and operation of a 400 MW IGCC power plant with associated carbon capture facilities capable of capturing up to two Mtpa of CO2. Construction of the proposed 400 MW IGCC plant will begin when the technology lessons from the first two Phases of the program are learnt. It is anticipated that carbon capture at the 400 MW power plant may begin around the 2020 timeframe. Storage locations are presently under evaluation and include EOR opportunities and geologic storage options.
The Tianjin plant, as an IGCC demonstration project of the CCS 863 Program, received financial support from the Ministry of Science and Technology (MOST) and was supported by the National Development and Reform Commission (NDRC) in its request for capacity development technical assistance from the Asian Development Bank (ADB).
Key project milestones
January 2006: GreenGen Co. established by China Huaneng Group and seven other Chinese state-owned companies.
December 2007: Peabody Energy joins the GreenGen Co. consortium as its only foreign shareholder.
November 2008: Huaneng (Tianjin) IGCC Co. Ltd. was co-established by GreenGen Co. and Tianjin Energy Investment Co. to be responsible for constructing and operating the first IGCC demonstration plant in China.
May 2009: NDRC formally approves construction of a 250 MW IGCC power unit.
July 2009: Construction starts on the 250 MW IGCC power unit.
November 2012: 72 hours of continuous operation + 24 hours of operation at full load commissioning test successfully completed.