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Sulfuric Acid Manufacture Technology Description

Online Sulfuric Acid Data: Manufacture, Uses and Applications

Intratec Chemical Process Library is the first free online encyclopedia of chemical process technologies. Our Library covers not only processes description themselves, but also the economics surrounding chemicals production, providing real-world knowledge on the production of several chemical commodities. Click here to check all chemicals covered.

In this page you will find free data about Sulfuric Acid, including:

  • What is Sulfuric Acid
  • How to make Sulfuric Acid
  • Sulfuric Acid uses and applications

This page presents brief synopsis of Sulfuric Acid production technology, describing, in a concise way, relevant technical and economic aspects. Each manufacturing process description will consist of:

  • Major process steps
  • Simplified, schematic flow diagram & key equipment
  • Important safety or environmental considerations
  • Economic perspective, comprising capital expenditures and/or operating expenses

All content from Intratec's Chemical Process Library was produced based on reports published by Intratec. To learn more about Sulfuric Acid production processes presented below and others examined in Intratec reports, click here.

Sulfuric Acid Manufacture From Sulfur

Sulfuric acid (H2SO4) is among the most important industrial chemicals, with large-scale uses in several industry sectors, such as basic chemicals, fertilizers, petroleum refining, metals, explosives, detergents and plastics. H2SO4 is broadly used in different concentrations and grades. Major applications include its use as a dehydrating agent, catalyst, reactant in chemical processes, solvent and absorbent.

Technology Description

The following figure describes a double-contact process for sulfuric acid production in which elemental sulfur is the source of sulfur dioxide (SO2). SO2 can also be obtained from several sulfur-bearing raw materials, including spent H2SO4 and smelter off-gases.

Sulfuric Acid Manufacture Technology - Process Flow Diagram

Sulfur Burning

Elemental sulfur (in molten form) and dried air are fed into a combustion furnace ...

Double-Contact Process

In the SO2 converter, SO2 is oxidized to SO3 in ...

The oxidation product is sent to the final ...

Sulfuric Acid Production Pathways

The double-contact process is currently the most widely employed ...

Economic Performance

The process described here was considered in an economic assessment targeting ...


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This synopsis is based on the report Sulfuric Acid Production from Sulfur via Double-Contact Process – Cost Analysis. (For more information, Click here).