skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Preliminary assessment of the use of stripped gas liquor (SGL) as cooling-tower makeup

Abstract

With the goal of developing data on the nature and treatment/reuse of wastewater from the slagging fixed-bed gasification (SFBG) of lignite, a pilot-scale wastewater treatment train featuring reuse concentration in a cooling tower has been expected. For the baseline test minimal treatment, featuring solvent extraction and ammonia stripping, was used to prepare stripped gas liquor (SGL) for use as makeup for a cooling tower. The most cost-effective approach is to provide minimal treatment represented by solvent extraction for organics removal and steam stripping for ammonia and acid gas removal followed by reuse in a cooling tower without intermediate biological treatment. However, this wastewater contains several thousand mg/1 of COD - after phenolics and other organics are reduced to low levels. The behavior of these contaminants in a cooling tower with respect to drift, further biological activity, and associated fouling, and their effects on the solubility of dissolved solids is unknown. In order to assess the effectiveness of extraction and stripping alone in treating wastewater for cooling tower use, UNDERC has installed a pilot-scale wastewater treatment train consisting of solvent extraction and ammonia stripping to prepare SGL for testing as makeup in a small cooling tower. The corrosive effects of usingmore » SGL as a cooling tower feed are being examined using coupons and Rhorback Corrator and Corrosometer probes, as well as metallurgical examinations of heat transfer surfaces after testing is complete. Preliminary data from the Corrosometers show a high corrosion rate for carbon steel, varying from 12 to 45 mpy for the various locations in the systems. Corrosion rates for carbon steel, as noted by the Corrator probes, were also high, ranging from 4 to 21 mpy.« less

Authors:
Publication Date:
Research Org.:
North Dakota Univ., Grand Forks (USA). Energy Research Center
OSTI Identifier:
6397428
Report Number(s):
DOE/FE/60181-15; CONF-830643-1
ON: DE83013087
DOE Contract Number:  
FC01-83FE60181
Resource Type:
Technical Report
Resource Relation:
Conference: 3. biennial synfuels wastewater workshop, Morgantown, WV, USA, 15 Jun 1983; Other Information: Portions are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; AMMONIA; REMOVAL; CARBON DIOXIDE; COAL GASIFICATION PLANTS; WASTE WATER; COOLING TOWERS; CORROSION; HYDROGEN SULFIDES; MATERIALS TESTING; CHEMICAL COMPOSITION; CORROSIVE EFFECTS; WATER SUPPLY; WATER TREATMENT; CARBON STEELS; COAL GASIFICATION; EXPERIMENTAL DATA; SOLVENT EXTRACTION; ALLOYS; CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; CHEMICAL REACTIONS; DATA; EXTRACTION; GASIFICATION; HYDRIDES; HYDROGEN COMPOUNDS; INDUSTRIAL PLANTS; INFORMATION; IRON ALLOYS; IRON BASE ALLOYS; LIQUID WASTES; MECHANICAL STRUCTURES; NITROGEN COMPOUNDS; NITROGEN HYDRIDES; NUMERICAL DATA; OXIDES; OXYGEN COMPOUNDS; SEPARATION PROCESSES; STEELS; SULFIDES; SULFUR COMPOUNDS; TESTING; THERMOCHEMICAL PROCESSES; TOWERS; WASTES; WATER; 010404* - Coal, Lignite, & Peat- Gasification; 010800 - Coal, Lignite, & Peat- Waste Management

Citation Formats

Willson, W G. Preliminary assessment of the use of stripped gas liquor (SGL) as cooling-tower makeup. United States: N. p., 1983. Web.
Willson, W G. Preliminary assessment of the use of stripped gas liquor (SGL) as cooling-tower makeup. United States.
Willson, W G. Sat . "Preliminary assessment of the use of stripped gas liquor (SGL) as cooling-tower makeup". United States.
@article{osti_6397428,
title = {Preliminary assessment of the use of stripped gas liquor (SGL) as cooling-tower makeup},
author = {Willson, W G},
abstractNote = {With the goal of developing data on the nature and treatment/reuse of wastewater from the slagging fixed-bed gasification (SFBG) of lignite, a pilot-scale wastewater treatment train featuring reuse concentration in a cooling tower has been expected. For the baseline test minimal treatment, featuring solvent extraction and ammonia stripping, was used to prepare stripped gas liquor (SGL) for use as makeup for a cooling tower. The most cost-effective approach is to provide minimal treatment represented by solvent extraction for organics removal and steam stripping for ammonia and acid gas removal followed by reuse in a cooling tower without intermediate biological treatment. However, this wastewater contains several thousand mg/1 of COD - after phenolics and other organics are reduced to low levels. The behavior of these contaminants in a cooling tower with respect to drift, further biological activity, and associated fouling, and their effects on the solubility of dissolved solids is unknown. In order to assess the effectiveness of extraction and stripping alone in treating wastewater for cooling tower use, UNDERC has installed a pilot-scale wastewater treatment train consisting of solvent extraction and ammonia stripping to prepare SGL for testing as makeup in a small cooling tower. The corrosive effects of using SGL as a cooling tower feed are being examined using coupons and Rhorback Corrator and Corrosometer probes, as well as metallurgical examinations of heat transfer surfaces after testing is complete. Preliminary data from the Corrosometers show a high corrosion rate for carbon steel, varying from 12 to 45 mpy for the various locations in the systems. Corrosion rates for carbon steel, as noted by the Corrator probes, were also high, ranging from 4 to 21 mpy.},
doi = {},
url = {https://www.osti.gov/biblio/6397428}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1983},
month = {1}
}

Technical Report:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that may hold this item. Keep in mind that many technical reports are not cataloged in WorldCat.

Save / Share: