COAL TAR PITS - Revision history

Randylyon at 02:23, 21 May 2018

2018-05-21T02:23:57Z

← Older revision		Revision as of 02:23, 21 May 2018
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	Coal gasification is said to have greater efficiency than conventional coal-burning because it can effectively use the gases twice: the coal gases are first cleaned of impurities and fired in a turbine to generate electricity. The exhaust heat from the gas turbine can be captured and used to generate steam for a steam turbine-generator. This is called a combined cycle, and Department of Energy says a coal gasification plant using this dual process can potentially achieve an efficiency of 50 percent or more, compared with a conventional coal power plant, which is often just above 30 percent. (5)		Coal gasification is said to have greater efficiency than conventional coal-burning because it can effectively use the gases twice: the coal gases are first cleaned of impurities and fired in a turbine to generate electricity. The exhaust heat from the gas turbine can be captured and used to generate steam for a steam turbine-generator. This is called a combined cycle, and Department of Energy says a coal gasification plant using this dual process can potentially achieve an efficiency of 50 percent or more, compared with a conventional coal power plant, which is often just above 30 percent. (5)

	In 1987 two coal tar pits, remains of the coal gasification process used until the development of natural gas after [[WORLD WAR II]], were discovered near the path of the U.S. 61 relocation project. The pits were both [[KEY CITY GAS COMPANY]] coal gasification sites. One pit, located at 11th Street and Kerper Boulevard, was found on city garage property. The second pit was near an Amoco service station west of the [[JULIEN DUBUQUE BRIDGE]] at Dodge and Bluff. (6) This had been the site of a gasification plant ~~from 1937 to 1954~~.		In 1987 two coal tar pits, remains of the coal gasification process used until the development of natural gas after [[WORLD WAR II]], were discovered near the path of the U.S. 61 relocation project. The pits were both [[KEY CITY GAS COMPANY]] coal gasification sites. One pit, located at 11th Street and Kerper Boulevard, was found on city garage property. The second pit was near an Amoco service station west of the [[JULIEN DUBUQUE BRIDGE]] at Dodge and Bluff. (6) This had been the site of a gasification plant during the turn of the twentieth century.

	The cleanup of the coal tar block construction of U. S. 61 was scheduled to begin in June, 1990 at an estimated cost of $3 million. The Environmental Protection Agency determined that Midwest Gas of Des Moines, the company which purchased the industry responsible for burying the coal tar, was responsible for cleanup costs. An estimated 10,000 cubic yards of contaminated soil would be hauled by rail to its coal-fired power plant 12 miles south of Sioux City, Iowa. The material would be mixed with coal and burned. The material was tested and found to potentially cause cancer if it came into contact with human skin or was eaten. (7)		The cleanup of the coal tar block construction of U. S. 61 was scheduled to begin in June, 1990 at an estimated cost of $3 million. The Environmental Protection Agency determined that Midwest Gas of Des Moines, the company which purchased the industry responsible for burying the coal tar, was responsible for cleanup costs. An estimated 10,000 cubic yards of contaminated soil would be hauled by rail to its coal-fired power plant 12 miles south of Sioux City, Iowa. The material would be mixed with coal and burned. The material was tested and found to potentially cause cancer if it came into contact with human skin or was eaten. (7)

			The site at 11th Street and Kerper became more difficult to handle as liquid coal tar was discovered. While more difficult to remove, it was easier to transport and burn. (8)

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	6. Kirchen, Rich. "Coal Tar Pits," ''Telegraph Herald'', December 2, 1987 p. 3		6. Kirchen, Rich. "Coal Tar Pits," ''Telegraph Herald'', December 2, 1987 p. 3

	7. ~~Pitchard~~, Ken. "Coal Tar Cleanup Cost: $3 Million," ''Telegraph Herald'', April 13, 1990, p. 3		7. Pritchard, Ken. "Coal Tar Cleanup Cost: $3 Million," ''Telegraph Herald'', April 13, 1990, p. 3

			8. Pritchard, Ken. "Underground Gas Tanks Could Delay Highway Work," ''Telegraph Herald'', October 6, 1990, p. 2

	[[Category: Environmental]]		[[Category: Environmental]]

Randylyon at 02:15, 21 May 2018

2018-05-21T02:15:19Z

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-COAL TAR PITS. In 1987 two coal tar pits, remains of the coal gasification process used until the development of natural gas after [[WORLD WAR II]], were discovered near the path of the U.S. 61 relocation project.
+COAL TAR PITS. Coal is best known for supplying electricity throughout the United States—nearly half of the country's electricity comes from coal. While the majority of it is burned at conventional coal-fired power plants, coal is also turned into a gas for conversion into electricity, hydrogen, and other energy products. (1)
-The pits in Dubuque were both [[KEY CITY GAS COMPANY]] coal gasification sites. One pit, located at 11th Street and Kerper Boulevard, was found on city garage property. The second pit was near an Amoco service station west of the [[JULIEN DUBUQUE BRIDGE]] at Dodge and Bluff.
+Coal gasification is a thermo-chemical process in which the gasifier's heat and pressure break coal down into its chemical parts. The resulting "syngas" is comprised primarily of carbon monoxide and hydrogen, and occasionally other gaseous compounds. (2)
 [[Category: Environmental]]

Randylyon at 01:54, 21 May 2018

2018-05-21T01:54:01Z

← Older revision		Revision as of 01:54, 21 May 2018
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	COAL TAR PITS. In 1987 two coal tar pits, remains of the coal gasification process used until the development of natural gas after [[WORLD WAR II]], were discovered near the path of the U.S. 61 relocation project.		COAL TAR PITS. In 1987 two coal tar pits, remains of the coal gasification process used until the development of natural gas after [[WORLD WAR II]], were discovered near the path of the U.S. 61 relocation project.

	The pits in Dubuque were both ~~Key City Gas~~ coal gasification sites. One pit, located at 11th Street and Kerper Boulevard, was found on city garage property. The second pit was near an Amoco service station west of the [[JULIEN DUBUQUE BRIDGE]] at Dodge and Bluff.		The pits in Dubuque were both [[KEY CITY GAS COMPANY]] coal gasification sites. One pit, located at 11th Street and Kerper Boulevard, was found on city garage property. The second pit was near an Amoco service station west of the [[JULIEN DUBUQUE BRIDGE]] at Dodge and Bluff.

	[[Category: Environmental]]		[[Category: Environmental]]

Randylyon at 17:16, 12 December 2017

2017-12-12T17:16:52Z

← Older revision		Revision as of 17:16, 12 December 2017
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	COAL TAR PITS~~. Remnants of coal gasification~~. In 1987 two coal tar pits, remains of the coal gasification process used until the development of natural gas after [[WORLD WAR II]], were discovered near the path of the U.S. 61 relocation project.		COAL TAR PITS. In 1987 two coal tar pits, remains of the coal gasification process used until the development of natural gas after [[WORLD WAR II]], were discovered near the path of the U.S. 61 relocation project.

	The pits in Dubuque were both Key City Gas coal gasification sites. One pit, located at 11th Street and Kerper Boulevard, was found on city garage property. The second pit was near an Amoco service station west of the [[JULIEN DUBUQUE BRIDGE]] at Dodge and Bluff.		The pits in Dubuque were both Key City Gas coal gasification sites. One pit, located at 11th Street and Kerper Boulevard, was found on city garage property. The second pit was near an Amoco service station west of the [[JULIEN DUBUQUE BRIDGE]] at Dodge and Bluff.

			[[Category: Environmental]]

Randylyon at 00:47, 17 February 2010

2010-02-17T00:47:18Z

← Older revision		Revision as of 00:47, 17 February 2010
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	COAL TAR PITS. Remnants of coal gasification. In 1987 two coal tar pits, remains of the coal gasification process used until the development of natural gas after ~~World War~~ II, were discovered near the path of the U.S. 61 relocation project.		COAL TAR PITS. Remnants of coal gasification. In 1987 two coal tar pits, remains of the coal gasification process used until the development of natural gas after [[WORLD WAR II]], were discovered near the path of the U.S. 61 relocation project.

	The pits in Dubuque were both Key City Gas coal gasification sites. One pit, located at 11th Street and Kerper Boulevard, was found on city garage property. The second pit was near an Amoco service station west of the [[JULIEN DUBUQUE BRIDGE]] at Dodge and Bluff.		The pits in Dubuque were both Key City Gas coal gasification sites. One pit, located at 11th Street and Kerper Boulevard, was found on city garage property. The second pit was near an Amoco service station west of the [[JULIEN DUBUQUE BRIDGE]] at Dodge and Bluff.

Randylyon: New page: COAL TAR PITS. Remnants of coal gasification. In 1987 two coal tar pits, remains of the coal gasification process used until the development of natural gas after World War II, were discove...

2008-07-18T19:15:00Z

New page: COAL TAR PITS. Remnants of coal gasification. In 1987 two coal tar pits, remains of the coal gasification process used until the development of natural gas after World War II, were discove...

New page

COAL TAR PITS. Remnants of coal gasification. In 1987 two coal tar pits, remains of the coal gasification process used until the development of natural gas after World War II, were discovered near the path of the U.S. 61 relocation project.

The pits in Dubuque were both Key City Gas coal gasification sites. One pit, located at 11th Street and Kerper Boulevard, was found on city garage property. The second pit was near an Amoco service station west of the [[JULIEN DUBUQUE BRIDGE]] at Dodge and Bluff.