Chlorine dioxide is a preferable bleaching agent used in the production of elemental chlorine-free (ECF) bleached chemical wood pulp all over the world, because it selectively oxidizes lignin without degrading cellulose fiber, and increases pulp yield and strength.

A chlorine dioxide plant produces chlorine dioxide by reducing chlorite or chlorate, both normally supplied as sodium salts, in a sulfuric acid (H2SO4) solution. Several commercially applied reducing agents are available, but methanol (CH3OH) and hydrogen peroxide (H2O2) are preferred because elemental chlorine production is minimized.

Due to its nature, chlorine dioxide must be produced where it will be used. We offer several best available techniques for its generation, each with their own special features. We sell chlorine dioxide to our pulp industry customers under the brand name Eka ClO2. For our customers who produce their own chlorine dioxide, we offer flexible service programs and rates to meet their chlorine dioxide production and maintenance needs.

When there is a commercial and technical fit for a particular customer, a Chemical Island can be built adjacent to the customer’s facility, integrating sodium chlorate and chlorine dioxide production.

Whether you are interested in upgrading your existing chlorine dioxide plant, or are starting a new pulp mill and need a turnkey solution, we are the right partner for your project and future reliable operations.

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