Warren
The Warren, Ohio facility converts metallurgical-grade coal into coke. It has very good rail, river and highway transportation plus access to coal fields in the Appalachian region as well as to the steel mills from Pennsylvania to Indiana. The site of the ArcelorMittal Warren facility has seen steel production since the 1920s. The current coke battery, built in the late 1970s, supplies coke primarily to the Cleveland plant. ArcelorMittal Warren has the capability to make 550,000 tons of coke per year.
Examples of Environmental Excellence
Recycling coke oven gas
One of Warren’s primary initiatives has been recycling of coke oven gas. Two projects will deliver both substantial savings in energy cost and significant reduction of the waste stream. They are projected to save a total of $1.5 million annually.
In the first of the projects, two coke-oven-gas-fired boilers feed process steam into the desulphurization plant. These boilers produce 16,000 lbs/hour of steam and can operate on either coke oven gas or natural gas. The boilers are each self-contained with gas train, steam generation and water treatment capabilities and can operate on either coke oven gas or natural gas.
The second project replaces a high temperature high-pressure hot water heater used for the pushing emission controls system on a Chemico car at the coke plant. The new heater is designed to operate on either coke or natural gas and features independent natural gas and coke oven gas trains. By using coke oven gas as the primary fuel, the plant will be able to reduce purchases of natural gas by 90,720 MMBtu/year, or one-third of the plant’s total natural gas usage.
Prior to commissioning the boilers, the plant purchased steam from neighboring WCI Steel.
Maintaining environmental excellence with capital investments
Capital projects underway at ArcelorMittal Warren will maintain the facility’s excellent environmental performance and continue to minimize the impact of its operations on the community.
Rebuilding of the coke oven battery is the most significant of these projects. The rebuild will ensure that the facility exceeds increasingly stringent environmental regulations. The project is aimed at preventing particulate matter, volatile organic compounds, hydrocarbons and other materials from escaping the furnace during pushing, charging and other operations. The project will take as long as three years to complete and the battery will continue to operate during the process.
A second project involves replacement of flushing liquid decanters. Flushing liquor is formed from the cooling of coke oven gas. The integrity of the decanters is essential in preventing the fluids from being released into the environment.