Silicon Carbide Shell and Tube Heat Exchanger

Product Introduction

Silicon Carbide Shell-and-Tube Heat Exchanger is a type of heat exchanger where the tubes or all major pressure-bearing components are made from silicon carbide (SiC) ceramic material, offering high corrosion resistance and high-temperature tolerance.

Product Structure

1. Tube Bundle: Utilizing silicon carbide tubes, this is the core component of heat exchange. Smooth tubes or enhanced heat transfer tubes with inner/outer fins can be selected as needed.
2. Tube Sheet: Also made of integral silicon carbide, or employing a specially designed silicon carbide-metal composite structure to ensure sealing and corrosion resistance at the tube-to-tube sheet connection.
3. Shell: Typically made of high-performance metals (such as PTFE-lined, rubber-lined carbon steel or stainless steel) or integral silicon carbide to match process requirements.
4. Sealing: Employs high-performance fluororubber, PTFE, or metal gaskets to ensure reliable sealing in corrosive environments.
5. Connection Method: A unique patented mechanical seal or special bonding technology is used between the silicon carbide tubes and the tube sheet to ensure sealing strength while compensating for differences in thermal expansion between materials.

Product Advantages

Corrosion Resistance: Highly chemically inert to strong acids and alkalis, suitable for environments with pH values from 0 to 14.
High Heat Transfer Efficiency: Thermal conductivity ranges from 110-130 W/(m·K), ensuring high heat transfer efficiency.
High-Temperature Resistance: Can withstand temperatures up to 1380°C, directly handling high-temperature flue gases, molten salts, etc.
High Strength and Pressure Resistance: Bending strength is 350-450 MPa, and the design pressure can reach up to 1.0 MPa.

Application Areas

1. Chemical Industry: Used for heat exchange in handling corrosive media such as acids and alkalis.
2. Petroleum Refining: Used for heating and cooling various liquids during petroleum processing.
3. Power Industry: Used in cooling systems of power plants.

Our Factory

Our factory covers 15,000 square meters area including modern workshops, testing center of flaw detection, physical and chemical labs, welding labs and the office building. With 130 professional staff, we are dedicated to providing the high efficient, quality products and excellent services.

FAQ

Q: What is the production cycle for custom silicon carbide heat exchangers?
A: The cycle is relatively long, mainly due to the special processes involved in sintering and molding the silicon carbide tubes, as well as the tube sheet assembly. Typically, it takes 12 to 24 weeks.

Q: How can the interfaces and piping be matched when integrating a silicon carbide heat exchanger into an existing system?
A: We provide detailed flange dimensions and pipe stress analysis and recommend using non-metallic or lined piping connections.

Q: Does the design of the silicon carbide heat exchanger consider future maintenance and spare part replacement?
A: Yes, it adopts a modular tube bundle design, making it easy to replace individual heat exchanger tubes on-site.

Q: Does the quote for custom products include spare heat exchanger tubes?
A: Considering the characteristics of the silicon carbide tubes, we usually recommend that customers purchase a certain quantity of spare heat exchanger tubes, with the cost calculated separately.

Q: How can the silicon carbide heat exchanger tubes be non-destructively tested?
A: Silicon carbide tubes are typically tested for internal defects using ultrasonic or X-ray inspection. After final assembly, helium leak testing with high sensitivity is performed.

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