Hebei Dongding Chemical Trade Co., Ltd

Contact process for manufacturing of sulphuric acid: Steps involved in the manufacturing of sulphuric acid are as stated below: Preparation of  sulphur dioxide . Conversion of sulphur dioxide into sulphur trioxide. Conversion of sulphur trioxide formed into concentrated H2SO4. Step 1: Preparation of sulphur dioxide: SO2 is prepared by burning  sulphur  in the presence of excess air so that the product combines with oxygen which is helpful for the next stage. S(s) + O2 (g) → SO2(g) Step 2: Preparation of sulphur trioxide: Sulphur trioxide is formed when sulphur dioxide reacts with oxygen in a ratio of 1:1 at a temperature of 400 °C – 450°C and a pressure of 1-2 atm in the presence of V2O5 as a catalyst. This reaction is reversible in nature. 2SO2(g) + O2(g) ⇌ 2SO3(g) Step 3: Preparation of concentrated sulphuric acid: The sulphur trioxide formed is first made to react with concentrated sulphuric acid. Sulphur trioxide cannot be dissolved in water direct...

Preparation of Sulphuric Acid by Contact process We will first start by addressing the question of what is sulphuric acid. Well, sulphuric acid is basically an oxidizing agent, a strong mineral acid, and a dehydrating agent. Sulphuric acid has the chemical formula H 2 SO 4 .   The acid is a colourless liquid. It is soluble in water and generally releases heat on contact. Further, the acid is corrosive in nature to metals and tissues. It will even char wood and most other organic matter on contact, but chances of objects catching fire are null. The acid has a density of 15 lb/gal. Exposure to the acid can result in adverse health effects from inhalation. It depends on the rate of exposure and concentration.     Sulphuric Acid 3D ball Structure That being said, the acid is usually manufactured using a method known as the contact process. Earlier, in this process, a chemical element known as platinum was first used as a catalyst. Later, an inorganic compound known as va...