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USA: Flue Gas Cleaning

Emission Control Technology for Carbon Black Industry

| Editor: Alexander Stark

Orion Engineered Carbons LLC has signed a contract for Topsoe’s sustainable flue gas cleaning technology, Snox.
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Orion Engineered Carbons LLC has signed a contract for Topsoe’s sustainable flue gas cleaning technology, Snox. (Source: Haldor Topsoe)

The carbon black producer Orion will use Haldor Topsoe's Snox technology for the flue gas treatment at their facility in Louisiana. The company has conducted in-depth analyses of the Snox process, including investigative site visits to existing Topsoe plants and testing the concept at one of their own manufacturing facilities since 2014.

Ivanhoe/USA — The Snox process removes sulfur dioxide, nitrogen oxides, and particulates from flue gases. The sulfur is recovered as sellable sulfuric acid and the nitrogen oxides are reduced to harmless free nitrogen. The process is based on catalytic reactions and does not consume water or absorbents. Neither does it produce any waste.

Other factors that played a major role in Orion's choice were the high energy efficiency and the low emissions level that meets the stringent environmental regulations.

The agreement includes engineering, license, proprietary equipment, spare parts, catalyst, and future supervision tasks during commissioning and start-up, as well as service obligations during commercial operation. The plant is scheduled to be in full commercial operation by April 2021.

The heat generated in the process can be reused to preheat air in the client’s process which improves overall efficiency and economics, the company claims.

Orion produces a broad range of carbon blacks that include high-performance specialty gas blacks, furnace blacks, lamp blacks, thermal blacks and other carbon blacks that tint, colorize and enhance the performance of polymers, plastics, paints and coatings, inks and toners, textile fibers, adhesives and sealants, tires, and mechanical rubber goods such as automotive belts and hoses. Carbon black is produced by the incomplete combustion of heavy petroleum products.

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