Asia Chemical Engineering Co., Ltd. is one of the most reliable manufacturers and suppliers of sulphuric acid recovery plant in China. Please rest assured to wholesale cost-efficient sulphuric acid recovery plant from our factory. Good service and reasonable price are available.
Product Description
The Sulphuric Acid Recovery Plant adopts a sulfur-based production route. Solid sulfur is first melted and purified before entering the combustion section. The molten sulfur is maintained in a controlled temperature range of approximately 135–148℃ through steam heating. After filtration, purified liquid sulfur is transported to the sulfur furnace for combustion.
During the combustion process, sulfur reacts with dried air to generate sulfur dioxide (SO₂). The generated gas passes through waste heat recovery equipment, reducing the gas temperature while producing steam for plant utilization.
The conversion section uses a "3+1" double conversion process. SO₂ is converted into sulfur trioxide (SO₃) through catalytic reaction stages. After the first conversion stage, gas enters the absorption system to remove SO₃, then returns for secondary conversion to increase sulfur conversion efficiency.
The absorption section uses circulating sulfuric acid to absorb SO₃ and regulate acid concentration. Through the drying tower, absorption towers, circulation pumps, and acid coolers, the system maintains stable acid concentration and reduces acid mist formation.
The complete system includes process equipment, pipelines, electrical control systems, instrumentation, water circulation systems, and auxiliary facilities. Automatic control systems monitor temperature, pressure, gas composition, and acid concentration during operation.
Application Fields
Chemical Manufacturing
The plant provides sulfuric acid production capability for chemical enterprises requiring continuous acid supply. The produced sulfuric acid can be used as a process material in chemical synthesis, acid treatment, and raw material preparation.
Fertilizer Production
Sulfuric acid is an important raw material for phosphate fertilizer manufacturing. The recovered acid output from the plant can be connected with fertilizer production lines to support downstream processing.
Metal Processing
Sulfuric acid is used in metal surface treatment, mineral processing, and metal extraction processes. The plant provides a stable acid source for facilities requiring sulfuric acid consumption.
Industrial Chemical Parks
For chemical production zones with centralized utility systems, the plant can integrate steam recovery, acid storage, and auxiliary systems into existing infrastructure.
Technical Data Specifications
| Parameter Name | Value / Range |
|---|---|
| Raw Material | Elemental sulfur |
| Production Capacity | 100,000 t/a |
| Product Concentration | 98.1%–98.5% H₂SO₄ |
| Process Technology | DCDA |
| SO₂ Conversion Rate | ≥99.8% |
| Operating Time | Approx. 8,000 h/year |
| Steam Recovery | Approx. 15 t/h |
| Steam Pressure | 3.82 MPa |
The production system includes sulfur melting, filtration, combustion, catalytic conversion, absorption, heat recovery, and finished acid storage sections. Equipment configuration can be adjusted according to required production capacity.
FAQ
1. What raw materials can be used in a Sulphuric Acid Recovery Plant?
The standard design uses solid sulfur as the main raw material. The sulfur quality requirement includes sulfur content ≥99.9%, moisture ≤0.01%, and ash content ≤0.001%.
2. How does the plant recover sulfur resources?
The system converts sulfur into SO₂ through combustion, then oxidizes SO₂ into SO₃ through catalytic conversion. SO₃ is absorbed by circulating sulfuric acid to produce concentrated sulfuric acid.
3. What is the function of waste heat recovery in the plant?
The sulfur combustion and conversion processes generate high-temperature gas. Heat recovery equipment transfers this energy into steam production, which can be used in production operations.
4. What concentration of sulfuric acid can the system produce?
The designed product concentration is approximately 98.1–98.5% sulfuric acid. Additional facilities can be configured for producing fuming sulfuric acid, liquid SO₃, or customized acid products.
5. How is environmental emission controlled?
The system applies double conversion and double absorption technology. Tail gas passes through absorption and treatment systems before discharge. The design data indicates SO₂ conversion efficiency can reach above 99.8%.
Why Choose Asia Chemical Engineering Co.,Ltd?
Asia Chemical Engineering Co.,Ltd provides engineering solutions for sulfuric acid production systems, focusing on process design, equipment integration, project execution, and technical support for chemical plant projects.
The company develops Sulphuric Acid Recovery Plant solutions based on sulfur combustion, catalytic conversion, absorption, and waste heat recovery technologies. The engineering scope covers the complete production line from raw material handling and sulfur melting to acid production, steam recovery, and tail gas treatment.
Integrated Engineering Design
Asia Chemical Engineering Co.,Ltd provides complete engineering services including process design, equipment selection, piping layout, electrical systems, instrumentation, and plant integration. The design approach considers production capacity, raw material conditions, utility supply, and environmental requirements.
For sulfuric acid projects, the company can configure key process sections such as:
- Sulfur melting and filtration system
- Sulfur combustion system
- Conversion system with catalytic reactors
- Drying and absorption units
- Acid circulation system
- Waste heat recovery system
- Automatic control and monitoring system
Sulfuric Acid Process Experience
The company applies double conversion and double absorption technology for sulfuric acid production. This process improves SO₂ conversion efficiency through multiple catalytic reaction stages and reduces sulfur-containing emissions during operation.
The engineering design can support production scales such as the 100,000 t/a sulfuric acid plant configuration, including:
- Product acid concentration control at approximately 98%
- SO₂ conversion rate above 99.8%
- Steam recovery through waste heat utilization
- Continuous operation with automated process monitoring
Customized Plant Configuration
Each chemical project has different requirements for raw materials, energy supply, production capacity, and site conditions. Asia Chemical Engineering Co.,Ltd provides project-based solutions by adjusting equipment specifications, process parameters, and auxiliary systems.
Customization options include:
- Production capacity adjustment
- Equipment material selection according to corrosion conditions
- Steam recovery configuration
- Acid storage and transportation system design
- Tail gas treatment integration
Focus on Energy Recovery and Process Optimization
The Sulphuric Acid Recovery Plant design incorporates heat recovery technology to utilize energy generated during sulfur combustion and SO₂ conversion.
The system can include waste heat boilers, superheaters, and economizers to recover thermal energy and produce process steam. This approach helps chemical plants integrate energy utilization with sulfuric acid production.
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