Sulfuric acid is an important chemical raw material, widely used in fields such as fertilizers, chemical industry, light industry, steel, and textiles.
Process description of sulfuric acid plant
The contract process (DCDA) is the major industrial method to produce sulfuric acid.
In the first step, sulfur is burned to produce sulfur dioxide.
S(s) + O2 → SO2 (−297 kJ/mol)
The sulfur dioxide is oxidized to sulfur trioxide by oxygen in the presence of a catalyst. This reaction is reversible and the formation of the sulfur trioxide is exothermic.
2 SO2 + O2 ⇌ 2 SO3 (−198 kJ/mol)
The sulfur trioxide is absorbed into 97–98% H2SO4 to form oleum (H2S2O7), also known as fuming sulfuric acid. The oleum is then diluted with water to form concentrated sulfuric acid.
H2SO4 + SO3 → H2S2O7
H2S2O7 + H2O → 2H2SO4
What can we do in a sulfuric acid project
We, Chongqing Biogreen Engineering And Technology Co., Ltd. (hereafter called as CBETC), is a technological enterprise specialized in process technology engineering and EPC contracting in the chemicals fields including fertilizer industry (Sulfuric acid, phosphoric acid, potassium and phosphate fertilizer-SOP, TSP, DCP, MCP, MKP, MAP and etc.).
As a sulfuric acid plant EPC contractor, CBETC can provide the following services for a sulfuric acid project:
- Feasibility Study
- Front End Engineering Design (FEED)
- Engineering Consultation
- Sulfuric acid plant design & Engineering
- Process Know-how & Technology Licensing
- EPC/Turnkey
- Supply of Complete set of sulfuric acid plant equipment
- Engineering Construction
- Construction Management
- Commissioning Services
- Operation & Maintenance Services
FAQ
Q: What about the catalyst for conversion?
A: The dual-conversion process is adopted for sulfuric acid plant. The LP of MECS will be used as conversion catalyst. The overall conversion rate can achieve 99.5% when the concentration of reformed sulfuric dioxide reaches 10%. This dual-conversion Process can improve the utilization rate of sulfur.
Q: What about the capacity of a sulfuric acid plant?
A: CBETC can provide a sulfuric acid plant with capacity from 15000t/a to 200000t/a. However the owner should consider the minimum economic capacity based on the local situation.
Q: What is the minimum economic capacity?
A: It refers to the minimum production scale that enterprises or production units must reach in the production process in order to achieve the maximization of cost-effectiveness.
Q: What about the construction period of sulfuric acid?
A: Normally, the construction period from 15month to 24month, it depends on the plant capacity and other factors such as civil work, logistics service, financial…
