Sulphuric Acid Production
Feature
Principles of Sulfuric Acid Synthesis Process
The synthesis of sulfuric acid primarily involves the roasting of sulfur (or pyrite) to produce sulfur dioxide (SO₂), which is then oxidized to sulfur trioxide (SO₃) in the presence of a solid catalyst and oxygen. Finally, SO₃ combines with water to form sulfuric acid (H₂SO₄). The main reaction equations are as follows:
Sulfur Roasting: S+O2→SO2 (Exothermic Reaction)
Oxidation Reaction: 2SO2+O2→2SO3 (Catalyst)
Sulfuric Acid Formation: SO3+H2O→H2SO4 (Exothermic Reaction)
Characteristics:
· Exothermic Reaction: The entire process is exothermic, and temperature changes can affect the reaction rate and equilibrium.
· Volume Change: There is minimal change in gas volume during the reactions, with pressure and temperature adjustments primarily used to control reaction equilibrium.
Sulfuric Acid System Design Philosophy
· Simple and Reliable Operation: Utilizing advanced automated control systems to ensure ease of operation, ease of maintenance, and stable, reliable performance.
· Low Operating Costs: Optimizing energy use and equipment geometry to reduce production costs and enhance economic efficiency.
· Efficient Heat Recovery: Integrating an efficient heat recovery system to maximize the recovery and utilization of waste heat generated during production, meeting various heat quality requirements.
· Eco-Friendly Process: Implementing environmentally friendly technologies to reduce harmful gas emissions and comply with stringent environmental standards.
Technical Features of Sulfuric Acid Process
· “3+1” or “3+2” double-conversion double-absorption process: Utilizing a three-stage catalytic and two-stage absorption process design to ensure complete reactions and increase sulfuric acid yield.
· High Conversion Rate: Achieving a total conversion rate of up to 99%, effectively reducing SO₂ content in the tail gas to below 100 PPM.
· High Absorption Rate: Attaining a total sulfuric acid absorption rate of ≥99.95%, ensuring product quality and reducing waste and pollution.
Sulfuric Acid Synthesis Process Flow
Application
Sulfuric Acid Synthesis Product Series
（1）Complete Process Package：Suitable for sulfuric acid production units with annual outputs of 10 kt to 400 kt.
Services: Providing a complete process design package, including equipment geometry, process flow diagrams, operation manuals, etc.
（2）Patented Equipment
（3）Engineering Design
Scope of Services:
· Basic Design: Including preliminary process design, flow design, and equipment geometry .
· Detailed Design: Providing construction drawings, equipment procurement lists, construction schedules, etc.
· Equipment Supply: Providing high-quality sulfuric acid production equipment as needed to ensure smooth project implementation.
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