What is a silicon carbide heat exchanger

What is a silicon carbide heat exchanger

Analysis of Silicon Carbide Heat Exchanger Technology

1、 Structure and Technical Parameters

1. Core component design

Heat exchange tube: Made of silicon carbide ceramic tube (diameter 14.0 × 1.5mm or 19.0 × 1.5mm, length 1-3m), with a single heat exchange area of 0.5-196m ², supporting multi process design, and tube plate forms including single tube plate and multi tube plate (patented technology).

Shell: The material can be selected from carbon steel, stainless steel or lined with anti-corrosion materials (such as polytetrafluoroethylene, fiberglass), with a working temperature range of -30 ℃~+200 ℃ and a pressure resistance range of -1~+8Bar.

2. Special design optimization

Sealing and leakage prevention: The internal spring compression structure absorbs thermal expansion, and the interface adopts double-layer sealing technology, with a leakage rate of ≤ 5%; Active leak prevention technology can alleviate minor leakage conditions.

2、 Performance advantages

1. Extreme environmental adaptability

High temperature stability: able to withstand 1300 ℃ flue gas waste heat recovery, air preheating temperature ≥ 600 ℃, excellent thermal shock performance (50 cycles from 1000 ℃ to room temperature without cracks).

Corrosion resistance: Significant resistance to strong corrosive media such as sulfuric acid, nitric acid, hydrofluoric acid, etc., solving the dew point corrosion problem of metal heat exchangers.

2. Efficient heat transfer capability

The thermal conductivity reaches 120-200W/(m · K), and the heat transfer efficiency is increased by more than 30% compared to traditional metal heat exchangers;

The waste heat recovery system can save fuel by ≥ 30%, and the flue gas is reheated to raise the net flue gas temperature after desulfurization from 50 ℃ to above 80 ℃, improving the chimney's emission diffusion capacity.

3、 Industry Development Trends

Market size: The global silicon carbide heat exchanger market is expected to reach 7.7 billion yuan by 2025, with a compound annual growth rate of 5.3%, with the Asia Pacific region (especially China) as the main growth pole.

Technological innovation:

Research and development of dual phase silicon carbide composite materials to enhance thermal shock resistance and mechanical strength;

Intelligent integration: Real time monitoring of operating status is achieved through temperature pressure differential sensors, with a fault warning accuracy rate of ≥ 95%.