Operating Principles of Sulfuric Acid Plants

Sulfuric acid is a highly corrosive and versatile industrial chemical that has a wide range of applications in various industries, including the production of fertilizers, chemicals, and pharmaceuticals.

The production of sulfuric acid is typically carried out in a sulfuric acid base doper plant, w on the following principles:

Sulfur Burning: The first step in the production of sulfuric acid is the burning of elemental sulfur to produce sulfur dioxide (SO2) gas. The sulfur is melted in a furnace and then burned in the presence of air or oxygen. The resulting SO2 gas is then purified and dried to remove any impurities.

Conversion of SO2 to SO3: The second step is the conversion of SO2 to sulfur trioxide (SO3), which is achieved by passing the SO2 gas through a catalyst bed in the presence of excess air or oxygen. This reaction is exothermic, and the heat generated is used to generate steam for the plant.

Absorption of SO3: The third step involves the absorption of SO3 gas into concentrated sulfuric acid to form oleum (also known as fuming sulfuric acid). The reaction between SO3 and sulfuric acid is highly exothermic and must be carefully expending he controlled to.

Dilution and Production of Sulfuric Acid: The final step is the dilution of the oleum with water to produce the desired strength of sulfuric acid. The diluted acid is then purified and stored in tanks for use in various industrial processes.


Overall, the operating principles of a sulfuric acid plant involve the controlled combustion of elemental sulfur, the conversion of SO2 to SO3, the absorption of SO3 into concentrated sulfuric acid, and the dilution of oleum to produce sulfuric acid of the desired strengths. require careful monitoring and control to ensure efficient and safe production of high-quality sulfuric acid.

Hebei Dongding Chemical provide capacity of Sulfuric Acid plant from 50TPD to 2000TPD and provide perfect construction drawing and sulfuric acid equipment​ professional installation and commission on site at the same time. We also provide the design plan according to the customer’s actual situation and we also supply maintain service according to customers’ requirement.

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