INTRODUCTION

In our Plant at Korba, Chhattisgarh, India, Vanadium Pentoxide Catalyst is produced for conversion of Sulphur Dioxide to Sulphur Trioxide in Sulphuric Acid Plant along with Vanadium Oxides for use in production of Ferro-Vanadium. The Plant installed is designed based on latest technology backed by Experts having long experience in development and production of Industrial Catalysts including Sulphuric Acid Catalyst. The Plant is equipped with all necessary process control equipment for rigid quality control so that materials of consistent quality are produced.

SULPHURIC ACID MANUFACTURING PROCESS

Sulphuric Acid is manufactured predominantly by burning elemental sulphur in presence of air to produce Sulphur Dioxide Sulphur Dioxide, thus formed is converted to Sulphur Trioxide in presence of promoted Vanadium Pentoxide Catalyst, at a moderately high temperature.

This conversion reaction is exothermic and to arrest excessive temperature rise, number of catalyst beds are employed with intermediate cooling of gases.

Reaction conditions are different in different catalyst beds and Catalyst Manufacturer's aim is to produce Catalyst to suit conditions prevailing in each bed. Our main concern is to produce highly active robust Catalyst with stable activity for a longer period of time and lowest pressure drop.

Semi-converted gas from the 3rd bed of the Converter, rich in SO₃ content, is stripped off its SO3 in an Intermediate Absorption Tower. Absorber outlet gas with low SO₃ partial pressure is taken to the 4th bed of the Converter for maximum conversion of SO₂ to SO₃. The gas is finally absorbed in a Final Absorption Tower.