Coproduction of peaking fuels in IGCC power plants: a process-screening study. Final report

Technical Report · Tue Jul 01 04:00:00 EDT 1986

OSTI ID:5479793

Shenoy, T A; Solomon, J; O'Brien, V J

This study evaluated and compared various options for processing a portion of the medium BTU gas (MBG) produced in a coal gasification combined cycle (GCC) power plant to produce a fuel which might be suitable for peaking or intermediate load use. Two alternate objectives were investigated in separate phases of the study. The first phase examined options for processing and storing a fuel which could be withdrawn and used in absorbing daily load swings in power generation demand. The second phase investigated options for meeting the seasonal peaks in gas demand of a joint gas/electric utility by converting a portion of the MBG to substitute natural gas (SNG) during the months of peak gas demand. For each phase, process designs and cost estimates were completed for several cases, based on both Texaco and BGC-Lurgi Slagging Gasification Technology. For the purposes of this screening study, it was assumed that the peaking fuel production facilities are incremental to the base GCC plant. The costs to produce and store the peaking fuel, excluding the cost of the MBG feed, were calculated by the revenue requirement method. Various sensitivities were evaluated on case assumptions, including a sensitivity to MBG feed value. For daily peaking use, the co-production of methanol and electricity by the ''once-through'' scheme (as studied in EPRI Report AP-2212) proved the most attractive option. Other options which produced gaseous fuels (hydrogen or SNG) for on-site storage were at least 30% more costly. Storage of SNG in an existing natural gas pipeline system was at least 10% higher, excluding pipeline charges. For seasonal SNG production there was little difference between the options studied, within the accuracy of the estimates. 13 refs., 72 tabs.

• Research Organization: Air Products and Chemicals, Inc., Allentown, PA (USA)
• OSTI ID: 5479793
• Report Number(s): EPRI-AP-4657; ON: TI86920396
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
20 FOSSIL-FUELED POWER PLANTS
200102 -- Fossil-Fueled Power Plants-- Power Cycles
200108 -- Fossil-Fueled Power Plants-- Fuels-- (1980-)
ALCOHOLS
ALKANES
BGC-LURGI SLAGGING PROCESS
CHEMICAL REACTIONS
COAL GASIFICATION
COMBINED-CYCLE POWER PLANTS
COMPARATIVE EVALUATIONS
COST
DAILY VARIATIONS
DUAL-PURPOSE POWER PLANTS
ECONOMIC ANALYSIS
ECONOMICS
FLUIDS
FUEL GAS
FUELS
GAS FUELS
GASES
GASIFICATION
HIGH BTU GAS
HYDROCARBONS
HYDROGEN PRODUCTION
HYDROXY COMPOUNDS
INTERMEDIATE BTU GAS
METHANATION
METHANE
METHANOL
ORGANIC COMPOUNDS
PEAKING POWER PLANTS
POWER PLANTS
PRODUCTION
SEASONAL VARIATIONS
STORAGE
SYNTHESIS GAS
TEXACO GASIFICATION PROCESS
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES
VARIATIONS