Corrosion Resistant Anodically Protected Cooler with Extended Service Duration and Improved Thermal Transmission for Sulfuric Acid Processing First Absorption Acid Cooler
|
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) ℃
|
96
|
33
|
96
|
33
|
|
|
Temperature (Outlet)℃
|
70
|
43
|
70
|
42.98
|
|
|
Liquid Kg/h
|
2377100
|
|
2377100
|
2360000
|
|
|
Density(inlet/outlet) Kg/m3
|
1840
|
1000
|
1840
|
1000
|
|
|
Viscosity(inlet/outlet)(cp)
|
7.9
|
0.76
|
7.9
|
0.76
|
|
|
Inlet pressure Mpa
|
0.5
|
0.4
|
0.5
|
0.4
|
|
|
Pressure drop, Mpa
|
≤0.07
|
≤0.06
|
0.07
|
0.005
|
|
PERFORMANCE
|
Heat exchanged quantity W
|
|
～27262695.8
|
|
|
Flow rate m/s
|
|
0.581
|
1.018
|
|
|
Heat transfer area affluent coefficient
|
|
1.15
|
|
|
Heat transfer coefficient W/m2 ℃
|
|
796.315
|
|
|
Heat transfer area m2
|
|
875
|
|
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
|
316L δ= 16
|
|
|
|
Heat transfer tube
|
316L Φ19.05×1.65×4500
|
|
|
|
Tubesheet
|
316L δ= 75
|
|
|
|
Baffle-crossing
|
316L δ= 16
|
|
|
|
head
|
316L δ= 75
|
|
|
Flange standard
|
Shell Side
|
Tube Side
|
|
|
|
HG/T20615-2009 class150 RF
|
HG/T20615-2009 class150 RF
|
|
Size
|
Φ2000×7614×2582
|
|
Operating weight
|
34887 Kg
|
|
The scope of supply
|
●Complete set ●Control system
●Special cable ●Random accessories
|
Anodically Protected Cooler
Jiangsu Carpe Diem Ocean Equipment Co., Ltd.
Specializes in engineering sophisticated thermal exchange systems for chemical industry applications, with concentrated proficiency in Anode Protection Sulfuric Acid Coolers. This equipment plays a central role in facilitating safe, effective, and durable performance across contemporary sulfuric acid manufacturing facilities.
Product Overview
The Anode Protection Sulfuric Acid Cooler is a shell-and-tube heat exchanger specifically engineered to decrease the temperature of concentrated sulfuric acid (typically 93% to 99%) throughout the drying and absorption stages of contact process facilities. The system overcomes the aggressive nature of heated concentrated acid through anodic protection technology, ensuring stainless steel components remain in a passive, non-corroding state.
Technical Principles & Operation
Anodic Protection Mechanism
The core principle utilizes anodic protection where stainless steel surfaces (acting as the anode) are maintained at a designated electrical potential within their "passive region." This is accomplished through cathodic configurations—either extended cathodes running through the shell or pin-shaped cathodes installed into nozzles—operating jointly with a reference electrode and potentiostat that governs DC power delivery.
- Protective Layer Formation: A minimal direct current initiates the formation of a resilient oxide coating across all internal surfaces, serving as a safeguarding barrier that reduces corrosion rates by several orders of magnitude.
- Continuous Monitoring & Adjustment: Electrical potential between the steel and reference electrode is continuously monitored. The adjustment mechanism implements ongoing corrections to maintain the metal securely within the passive zone, preventing both active degradation and transpassive deterioration.
- Optimized Structural Design: Engineered with features such as rod-configured baffles to limit tube vibration while simultaneously enhancing heat transfer efficiency in demanding processing environments.
Key Benefits & Performance Features
- Reliable Corrosion Control: Substantially curtails chemical erosion, allowing austenitic stainless steels to operate reliably in environments where they would typically be insufficient, ensuring uninterrupted operational safety.
- Extended Service Life: Consistent maintenance of the passive oxide layer protects against chemical breakdown, offering significantly longer operational lifespan compared to unprotected alternatives.
- Enhanced Heat Transfer: System configuration promotes turbulent acid movement and utilizes high-efficiency heat transfer surfaces for precise temperature control and economical energy usage.
- System Integrity: Stable protective parameters and comprehensive monitoring mechanisms—including remote diagnostic functions—significantly reduce the risk of acid leakage and unplanned shutdowns.
- Thermal Recovery Capability: Safe operation at elevated temperatures (up to 160°C or higher) facilitates collection of valuable waste heat, improving overall thermal efficiency of sulfuric acid plants.
Jiangsu Carpe Diem Ocean Equipment Co., Ltd. provides these high-caliber cooling systems, ensuring customers benefit from resilient, low-maintenance equipment constructed to fulfill the rigorous demands of large-scale sulfuric acid processing operations.
