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PHAR Process for the Steel Industry

Hydrochloric Acid Pickling . In hydrochloric acid pickling, the acid reacts with the scale on the steel as follows:Fe2O3 Fe 6HCl = 3FeCl2 3H2OFe3O4 Fe 8HCl = 4FeCl2 4H2OFeO 2HCl = H2O FeCl2 The iron stays in solution in the hydrochloric acid as ferrous ion (Fe2 ). . . . . Pickliq HCl Regeneration System.

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PHAR Process for the Steel Industry

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    1. PHAR ® Process for the Steel Industry Green Technology Group, Inc. Pawling, NY Email Greentg@verizon.net

    2. Hydrochloric Acid Pickling In hydrochloric acid pickling, the acid reacts with the scale on the steel as follows: Fe2O3 + Fe + 6HCl = 3FeCl2 + 3H2O Fe3O4 + Fe + 8HCl = 4FeCl2 + 4H2O FeO + 2HCl = H2O + FeCl2 The iron stays in solution in the hydrochloric acid as ferrous ion (Fe2+)

    3. Pickliq® HCl Regeneration System

    4. PHAR Flow Sheet for Steel Mill

    5. Process Characteristics Continuous process Steady state concentrations Controllable bath formulation Stable

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