Evaluation of cooling tower and wastewater treatment operations at the Great Plains Coal Gasification Plant
The objective of this study was to provide a technical assessment of the Great Plains Coal Gasification Plant Wastewater Treatment System. This Scope of Work consisted of five primary tasks described as follows: Task 1 - Determine the quantity of hydantoins in the stripped gas liquor (SGL), their precursors, and the kinetics of their formation in condensed liquor for the Great Plains Gasification Associates (GPGA) gasification facility. The University of North Dakota Energy Research Center (UNDERC) has measured a high concentration of hydantoins in the gas liquor from their slagging gasifier. UNDERC has tested the use of SGL in a pilot cooling tower and they witnessed some adverse effects in the cooling tower and heat exchanger systems. Task 2 - Investigate the adverse Department of Energy (DOE) findings at UNDERC with regard to corrosion, foaming, biological and organic fouling, chemical attack on concrete and organic emissions resulting from the use of SGL in a pilot plant cooling tower. Task 3 - Validate the heat load on the cooling tower for both summer and winter operation and determine the adequacy of the surge pond to store the maximum predicted amount of excess water accumulated during winter operation. Task 4 - Assess potential fouling, foaming and organic carry-over problems associated with operability of the multiple-effect evaporator and develop recommendations on possible alternate use of evaporator condensate to alleviate possible problems in disposing of excess wastewater. Task 5 - Provide DOE with recommendations on the wastewater treatment backup design and test program already committed to by GPGA. This paper presents Fluor's findings regarding the five primary tasks. 12 refs., 4 figs., 15 tabs.
- Research Organization:
- Fluor Engineers, Inc., Irvine, CA (USA). Advanced Technology Div.
- DOE Contract Number:
- AC02-82CH10088
- OSTI ID:
- 5639458
- Report Number(s):
- DOE/CH/10088-1813; ON: DE85014547
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COAL GASIFICATION PLANTS
WASTE WATER
WATER TREATMENT
EVALUATION
CONCRETES
COOLING TOWERS
CORROSION
CORROSIVE EFFECTS
EMISSION
FOULING
HYDANTOINS
NORTH DAKOTA
ORGANIC COMPOUNDS
RECOMMENDATIONS
AZOLES
BUILDING MATERIALS
CHEMICAL REACTIONS
FEDERAL REGION VIII
HETEROCYCLIC COMPOUNDS
HYDROGEN COMPOUNDS
IMIDAZOLES
INDUSTRIAL PLANTS
LIQUID WASTES
MATERIALS
MECHANICAL STRUCTURES
NORTH AMERICA
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
TOWERS
USA
WASTES
WATER
010800* - Coal
Lignite
& Peat- Waste Management
010404 - Coal
Lignite
& Peat- Gasification