Silicon Carbide Heat Exchanger, PTFE Lined
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SiC Heat Exchanger
Given comprehensive test data and several actual application cases, PTFE lined heat exchanger is the optimal of existing SiC heat exchangers regarding all aspects of reliability, stability, thermal resistance, pressure withstand, and usage range.
| Silicon carbide corrosion performance | |||
| Testing Environment Conc.Reagent | Corrosive Weight Loss | (mg/cm2yr) | |
| (Wt%) | Temperature (C) | Pressureless-sintered Silicon Carbide ** No Free SiC)** | Reaction-bonded Silicon Carbide 12% SiC) |
| 98% H2SO4 | 100 | 1.8 | 55 |
| 50% NaOH | 100 | 2.6 | >1000 |
| 53% HF | 25 | < 0.2 | 7.9 |
| 85% H3PO4 | 100 | < 0.2 | 8.8 |
| 70% HNO3 | 100 | < 0.2 | 0.5 |
| 45% KOH | 100 | < 0.2 | >1000 |
| 25% HCI | 70 | < 0.2 | 0.9 |
| 10% HF plus 57% HNO3 | 25 | < 0.2 | >1000 |
| Qianqiao produces every SiC heat exchanger with pressureless-sintered silicon carbide ** | |||