|
Process parameters
|
|
Project
|
Design parameters
|
Performance parameters
|
|
|
Shell Side
|
Tube Side
|
Shell Side
|
Tube Side
|
|
MEDIUM
|
Fluid name
|
Sulfuric Acid
98.5%%
|
Cooling Water
|
Sulfuric Acid
98.5%%
|
Cooling Water
|
|
|
Temperature (Inlet) ℃
|
93
|
32
|
93
|
32
|
|
|
Temperature (Outlet)℃
|
70
|
40
|
70
|
40
|
|
|
Liquid Kg/h
|
1150000
|
|
1150000
|
1260000
|
|
|
Density(inlet/outlet) Kg/m3
|
1767.0
|
1000
|
1767.0
|
1000
|
|
|
Viscosity(inlet/outlet)(cp)
|
4.67
|
0.768
|
4.67
|
0.768
|
|
|
Inlet pressure Mpa
|
0.46
|
0.3
|
0.46
|
0.3
|
|
|
Pressure drop, Mpa
|
≤0.06
|
≤0.06
|
0.06
|
0.023
|
|
PERFORMANCE
|
Heat exchanged quantity W
|
|
～11667388.9
|
|
|
Flow rate m/s
|
|
0.532
|
2.035
|
|
|
Heat transfer area affluent coefficient
|
|
1.15
|
|
|
Heat transfer coefficient W/m2 ℃
|
|
927.635
|
|
|
Heat transfer area m2
|
|
330
|
|
MATERIAL
|
Type
|
shell and tube
|
The flow form
|
counter-current flow
|
|
|
Sealing form
|
welding connection in acid side, flange connection in water side
|
|
|
Materials and specifications
|
shell
|
304L δ= 10
|
|
|
|
Heat transfer tube
|
316L Φ19×2.0×6000
|
|
|
|
Tubesheet
|
304L δ= 55
|
|
|
|
Baffle-crossing
|
304L δ= 10
|
|
|
|
head
|
Q235-B δ= 12
|
|
|
Flange standard
|
Shell Side
|
Tube Side
|
|
|
|
HG20592-2009 PN10 DN 450
|
HG20592-2009 PN6 DN 600
|
|
Size
|
Φ1100×8614×1570
|
|
Operating weight
|
15849 Kg
|
|
The scope of supply
|
●Complete set ●Control system
●Special cable ●Random accessories
|
Custom Dry Acid Cooler with Anodic Protection Heat Exchanger
Jiangsu Carpe Diem Ocean Equipment Co., Ltd. specializes in engineering and delivering high-performance heat management systems for chemical industry applications, with extensive expertise in Anodic Protection Sulfuric Acid Coolers. This equipment serves as a critical component for ensuring safe, efficient, and durable operation in modern sulfuric acid production facilities.
Equipment Overview
The Anodic Protection Sulfuric Acid Cooler is a shell-and-tube heat exchanger specifically designed to reduce the temperature of concentrated sulfuric acid (typically 93% to 99%) during drying and absorption phases in contact process plants. The highly corrosive nature of heated concentrated acid typically causes rapid degradation of conventional materials. This system overcomes these challenges through anodic protection, an electrochemical technique that maintains stainless steel in a passive, corrosion-resistant state.
Technical Principles and Operational Framework
The operating principle centers on anodic protection, where stainless steel surfaces (serving as the anode) are maintained at a specific electrical potential within their "passive range." This condition is achieved through a cathodic arrangement—either extended cathodes positioned through the shell or pin-shaped cathodes inserted into nozzles—operating in conjunction with a reference electrode and a potentiostat that controls DC power delivery.
- Oxidative Coating Development: A low-voltage direct current is applied to stimulate the growth of a stable oxide coating across all interior surfaces. This coating serves as a protective layer, reducing corrosion rates by several orders of magnitude.
- Voltage Monitoring and Adjustment: The electrochemical potential between the steel and reference electrode is continuously monitored. The control system applies ongoing corrections to the current, maintaining the metal reliably within the passive zone and preventing both active corrosion at lower potentials and transpassive erosion at higher potentials.
- Structural Configuration: The cooler is engineered to withstand the thermal demands characteristic of processing environments. Design features, including rod-patterned baffles, minimize tube vibration while simultaneously enhancing heat transfer efficiency.
Core Capabilities and Operational Benefits
- Reliable Corrosion Control: Anodic protection significantly limits chemical degradation, enabling austenitic stainless steels to perform effectively in environments where they would normally be inadequate—thereby ensuring continuous operational safety.
- Extended Service Life: Through continuous maintenance of the passive oxide coating, the equipment remains protected against chemical deterioration, providing substantially longer service duration compared to non-protected alternatives.
- Enhanced Heat Transfer: The system design promotes turbulent acid flow and utilizes high-efficiency heat transfer surfaces, which are essential for precise temperature control and optimal energy consumption.
- Operational Reliability: With stable protective parameters and comprehensive monitoring systems—including remote diagnostic capabilities in modern versions—the risk of acid leakage and unexpected shutdowns is significantly reduced.
- Thermal Recovery Capacity: By enabling safe operation at elevated temperatures (up to 160°C or higher), these systems facilitate the recovery of high-grade waste heat, thereby improving the overall thermal efficiency of sulfuric acid plants.
Jiangsu Carpe Diem Ocean Equipment Co., Ltd. provides these advanced cooling systems, ensuring clients receive durable, low-maintenance equipment engineered to meet the rigorous demands of large-scale sulfuric acid processing operations.
