What is Silicon Carbide, How could it used on heat exchanger?

Silicon Carbide is a special ceramic material with high performance for thermal transfer, which initially used on heat exchanger for high temperature flue gas heating recycling, now Sillicon Carbide Tubular Heat Exchanger gradully apply for widely checmical application upon the improvement for Sintering process. Silicon Carbide features as completely impervious and high resistant to strong acids contain chlorinated organics such as Sulphuric Acid, Phosphoric Acid, HF, NaOH, and HCl. So Silicon Carbide Heat Exchanger is optimal for heat transer solution for pharmaceutical,fine chemicals and semiconductor industry.

Except to molten alkali metal, it can resist all acid and alkali corrosion

Because the reaction sintering of silicon carbide tube containing silicon free, its corrosion resistance in some environment greatly discount (can be seen from the table, in the sulfuric acid, HF, strong alkaline solution (NaOH, KOH) Non-pressing sintering of silicon carbide tube corrosion resistance significantly superior to the reaction sintered silicon carbide tube), both at home and abroad a large number of industrial practice proof,  Compared with reactive sintering SILICON carbide heat exchanger, non-pressure sintering silicon carbide heat exchanger has more obvious advantages in energy saving efficiency and service life.  

Very low coefficient of expansion

Excellent resistance to thermal shock
Silicon carbide tube itself has excellent ability to withstand thermal stress caused by frequent heating and cooling

The surface is non-sticky  
Fluid resistance is small and fouling deposition and scaling coefficient is greatly reduced


Why Choice Silicon Carbide Tube and Shell Heat Exchanger?
Among Nonmetallic material heat exchangers, why choice Silicon Carbide Tubular Heat Exchanger?





The Main Struture Features for Shineheat Silicon Carbide Tube and Shell Heat Exchanger?

*SIC Tube adopts Non-pressing Sintering Process 
Non-pressing-sintering SI tubes are more cost-effective in corrosion resistance and maintenance than reaction-sintering SI tubes (containing free silicon)

*Dual Tubesheets, Dual Screws Design 
Double screw design makes tighten the sealing ring independently, and could be operated for a single heat exchanger tube, reliable sealing
Material contact side tubesheet using PTFE (resist material corrosion), public engineering side using carbon steel tubesheet (improve the strength of heat exchanger), when one side of the leakage, can be found from the inspection hole (placed at the lowest point) without cross-contamination of media




* Flexible Dual "O" Ring Sealing
The sealing of heat exchange tube and tubesheet can use perfluoroether or fluororubber according to the process needs

*The Inner lining of Tube Chamber
The Inner lining of the Tube Chamber can be enamel or PTFE lining according to the process needs.


* Spiral Baffle Design

1. Silicon carbide tube adopts spiral baffle full support design, which greatly improves the ability of heat exchanger to resist production fluctuation, reduces the failure of heat exchanger caused by flow vibration, and improves the service life of equipment;

2. The fluid flows through the helical surface in the form of continuous turbulence. The helical flow formed breaks the velocity boundary layer and improves the heat transfer efficiency by 15%-20%;

3. Fluid in the shell side spiral flow, pressure loss is reduced, reduce power consumption;

4. No flow dead zone, high flow rate makes impurities not easy to deposit, prolong the cleaning cycle of heat exchanger.