National Steel's by-product modifications

Conference · Thu Jul 01 04:00:00 EDT 1993 · Iron and Steel Engineer; (United States)

OSTI ID:7120943

Kalinowsky, R P ^[1]; Platts, M ^[2]

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1. National Steel Corp., Ecorse, MI (United States). Great Lakes Division
2. Thyssen Still Otto, Pittsburgh, PA (United States)

The original 6-meter No. 5 coke battery and by-product plant operated from 1970 through 1986. Davy/Still Otto received a contract in Dec. 1990 to engineer and rebuild the by-products plant, and coal and coke material handling facilities. The rebuilt facilities began operation in Nov. 1992. Coal handling facilities were reused with repairs and modifications, such as new vibrating bin bottoms, bin blasters and variable speed belts with weigh scales for an accurate coal blend. Coke handling consists of two new fixed blade rack and pinion driven coke plows, new conveyors and screening station. The by-product plant processes 48 million cu ft/day of coke-oven gas, through two rehabilitated primary coolers, one of two rehabilitated exhausters, two new tar precipitators in parallel, two new ammonia scrubbers with secondary cooling in series and two rehabilitated light oil scrubbers in series. Coke-oven gas is used for battery underfire, boilers, hot strop mill and annealing furnaces. By-products produced and sold are light, oil, tar and sodium phenolate. Environmental facilities include ammonia stills, catalytic ammonia destruction reactors with waste heat boilers and complete gas blanketing for benzene control. All facilities are PLC and DCS controlled with data trending capability.

• OSTI ID: 7120943
• Report Number(s): CONF-9309280--
• Conference Information: Journal Name: Iron and Steel Engineer; (United States) Journal Volume: 70:7
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402 -- Coal
Lignite
& Peat-- Purification & Upgrading
010409 -- Coal
Lignite
& Peat-- Pyrolysis & Carbonization-- (1987-)
013000* -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
BY-PRODUCTS
CLEANING
COAL GAS
COKING PLANTS
COMPUTERIZED CONTROL SYSTEMS
CONTROL SYSTEMS
EQUIPMENT
FLUIDS
GASES
INDUSTRIAL PLANTS
MATERIALS HANDLING EQUIPMENT
MODIFICATIONS
ON-LINE CONTROL SYSTEMS
ON-LINE SYSTEMS
PYROLYSIS PRODUCTS
WASTE PROCESSING PLANTS