DINKONDA GLOBAL Power Plants Special 2205/2507 Series Austenitic And Ferritic

Product Specification

DINKONDA GLOBAL Power Plants Special 2205/2507 Series Austenitic And Ferritic Dual Phase Steel Tube Shell Heat Exchanger For Corrosion Conditions With High Chloride Ion Content

Product Overview
The key heat exchange components of the tube and shell sides of the 2205/2507 duplex steel heat exchanger are made of 2205 and 2507 super duplex stainless steel, which has a dual phase structure of austenite and ferrite, and combines high strength with excellent resistance to pitting corrosion, crevice corrosion, and stress corrosion. It belongs to the pressure vessel level tube shell heat exchange equipment, which is used to complete the heating, cooling, condensation, and waste heat recovery of the medium. It is widely used in corrosive conditions with high chloride ion content, and compensates for the insufficient corrosion resistance of ordinary 304 and 316L stainless steel.

Structural Composition
1. Shell: Designed and manufactured according to pressure vessel standards, the shell can be made of duplex steel or carbon steel lined duplex steel, equipped with process connections, exhaust ports, and drain ports to ensure pressure bearing operation and maintenance.

2. Heat exchange tube bundle: The heat exchange tubes are made of 2205/2507 duplex stainless steel, and the tube plates are made of duplex steel forgings. The expansion welding composite process is used to eliminate the hidden danger of crevice corrosion and prevent the medium from interpenetrating between the tube and shell sides; The welding adopts a special welding process for duplex steel to ensure the duplex ratio of the weld seam and avoid a decrease in the corrosion resistance of the welding area.

3. Pipe box and head: The contact area of the overcurrent corrosive medium is made of 2205/2507 duplex steel material, matched with pressure vessel flanges, to ensure reliable sealing under high temperature and chloride ion conditions.

4. Baffle plate: supports the heat exchange tube bundle, disturbs the shell side fluid, improves heat transfer efficiency, and reduces tube bundle vibration caused by fluid impact.

5. Saddle support: bear the overall load of the equipment, adapt to the thermal expansion displacement of the equipment, and release the thermal stress generated during operation.

6. Accessory components: equipped with venting port, sewage outlet, pressure measuring interface, lifting lug, convenient for on-site installation, commissioning, working condition monitoring and maintenance.

Core Features
1. Excellent corrosion resistance: Its resistance to chloride ion pitting corrosion, crevice corrosion, and stress corrosion cracking is much better than that of ordinary austenitic stainless steel, and it is suitable for harsh working conditions such as seawater, saltwater, and chlorine containing chemical media; The corrosion resistance level of 2507 super duplex steel is higher than 2205, suitable for stronger corrosion conditions.

2. High mechanical strength: The yield strength is about twice that of 316L stainless steel, and the equipment can achieve lightweight design with good resistance to erosion and fatigue.

3. Stable and reliable heat transfer: The shell and tube structure has sufficient heat transfer area, with expansion welding and sealing technology, stable sealing performance, and no medium leakage.

4. Tube bundle withdrawable structure: The tube bundle can be withdrawn for easy cleaning of scaling on the tube and shell sides, detection of corrosion and thinning of heat exchange tubes, and convenient maintenance.

5. Optional thermal compensation: Expansion joints can be configured according to the temperature difference of the process to eliminate thermal expansion and contraction stress and protect the heat exchange tube bundle.

6. Customized design: The heat exchange area, design pressure, and design temperature are all customized according to the user's process parameters, and 2205 or 2507 material solutions can be selected as needed.

Technical Specifications
Contact medium material: 2205/2507 super duplex stainless steel, pipe plate duplex steel forgings; Shell dual phase steel/carbon steel composite optional
Design pressure: pipe side and shell side customized according to actual process conditions
Design temperature: -20~300 ℃
Structural form: Shell and tube type, fixed tube plate type, floating head type can be selected
Applicable media: seawater, brine, chemical media containing chloride ions, salt solutions, acidic corrosion process media, etc
Execution standards: GB150 pressure vessel standard, welding and manufacturing specifications for duplex stainless steel equipment

FAQ:
Q1.What about the lead time?
A: 5-7 days for Sample preparing ,15-20 working days for mass production.

Q2. Is it OK to print my logo on led light product?
A: Yes. Please inform us formally before our production.

Q3: Do you offer guarantee for the products?
A: Yes, we offer 1 years warranty to our products.

Q4: How to deal with the faulty?
A: Firstly, Our products are produced in strict quality control system and the defective rate will be less than 0.2%.

Secondly, during the guarantee period, we will send new lights with new order for small quantity. For defective batch products, we will repair them and resend them to you or we can discuss the solution including re-call according to real situation.

Company Profile

DINKONDA GLOBAL has been developing and supplying equipment and components for specialized thermal power plants and related industries for 20 years and is one of the a market-leading global manufacturers and providers in the industry. We have a professional technical research and development team, professional management talents and dozens of quality inspection personnel. The company has more than 50 CNC machining centers, CNC lathes, various inspection equipment and other professional equipments.
Our comprehensive product portfolio and over 20 years of industry knowledge mean customers can rely on us to deliver innovative, reliable and economic products. Chenglei products are designed and manufactured with quality components and clear user interfaces for quick and safe operation in the field. Our strict product development and testing ensures long-lasting performance and continued reliability. Our independently developed and produced CL series valve electric actuators are widely used in various industries such as Oil & Gas, Water & Power, and Chemical, Process & Industrial .
Customers rely on us for innovative, high quality and dependable products for managing the flow of liquids, gases and powders. We help customers around the world to reduce emissions, improve efficiency, minimize their environmental impact and assure safety.