How to Build a Sulfuric Acid Plant

If you plan to build a sulfuric acid plant for industrial chemicals, fertilizer, metallurgy or mining projects, you need standardized, energy-saving, environmentally friendly plant solutions and professional general contract engineering support. As a professional sulfuric acid plant manufacturer and general contractor, we provide full-process plant design, equipment manufacturing, installation, commissioning and turnkey project services to customers around the world. This guide comprehensively explains how to build a qualified, efficient and low-emission sulfuric acid production plant from on-site evaluation, process selection, equipment configuration to final operation.

Before building a sulfuric acid factory, systematic pre-project planning is the key to avoiding investment waste and unqualified production. We provide one-on-one project feasibility analysis according to clients’ local conditions and production demands.
- Capacity Confirmation: Customize 50TPD, 100TPD, 200TPD, 500TPD to 1000TPD large-scale sulfuric acid plants, covering small, medium and large industrial production demands
- Raw Material Route Selection: Support two mainstream industrial processes: sulfur-burning sulfuric acid plant and pyrite-based sulfuric acid plant, also adapt to smelter flue gas acid production
- Site & Environment Assessment: Evaluate plant area, terrain, power supply, water resources, and local environmental protection emission standards to ensure the plant meets local industrial compliance requirements
- Budget & Return Analysis: Optimize equipment configuration and process flow to reduce initial investment and long-term operation costs

Our customized sulfuric acid plant adopts the mature 3+1 four-stage double conversion and double absorption process, which is the most mainstream and stable technology for modern sulfuric acid production. The whole process features high conversion rate, low energy consumption, and ultra-low tail gas emission, fully complying with global environmental protection standards.
Complete Production Process Flow:
1. Raw Material Melting & Purification: Adopt dynamic sulfur melting and forced filtration refining technology for solid sulfur raw materials, ensuring pure and stable raw material supply with low operation energy consumption
2. High-Efficiency Combustion & Gas Making: Apply high-pressure sulfur pump mechanical atomization combined with hot air atomization technology to realize full combustion of liquid sulfur, with combustion efficiency close to 100% and high material utilization rate
3. Waste Heat Recovery: Equip with waste heat boilers, superheaters and heat pipe economizers to maximize recovery of production waste heat for steam generation, greatly reducing plant energy consumption
4. Catalytic Conversion: Complete SO₂ catalytic oxidation through four catalyst beds, with a total sulfur dioxide conversion rate of over 99.8%, which fundamentally reduces tail gas pollutant emissions
5. Drying & Double Absorption: Adopt 98% concentrated sulfuric acid drying + medium and high temperature double absorption process to suppress acid mist generation, improve finished acid purity, and optimize production conditions
6. Tail Gas Environmental Treatment: Support standard tail gas purification system to ensure flue gas emission meets international environmental protection standards, avoiding plant shutdown risks caused by excessive emissions

A complete sulfuric acid production line consists of full sets of corrosion-resistant, high-temperature resistant industrial equipment. We provide standardized and customized equipment packages for turnkey projects to ensure stable long-term operation of the plant.
- Raw Material Processing System: Sulfur melting tank, liquid sulfur filter, feeding and conveying equipment
- Combustion & Heat Recovery System: Sulfur incinerator, waste heat boiler, heat exchanger unit
- Conversion & Absorption System: Four-stage catalytic converter, drying tower, primary and secondary absorption towers, acid circulation system
- Intelligent Control System: PLC full-automatic control cabinet, instrument detection device, realizing unmanned automatic operation of the whole line
- Environmental Protection System: Tail gas purification device, waste water and residue recovery equipment
- Storage & Auxiliary System: Anti-corrosion sulfuric acid storage tank, circulating water system, process pipeline and valve accessories