What are the anti-corrosion measures for heat exchangers in polysilicon production?
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In polysilicon production, chlorosilane is the main medium, and heat exchangers that use circulating water and steam suffer from corrosion and leakage. Do you have any good solutions?
The use of graphite heat exchangers can fundamentally solve the problem of corrosion; the recommended model is the YKC type round-block pore graphite heat exchanger. The heat exchange area and other parameters should be determined based on the process requirements.
The cost of graphite heat exchangers is too high, right?
How effective are graphite heat exchangers? Could you please explain this to me? Thank you! ! ! ! ! ! ! ! !
Graphite heat exchangers have advantages such as good corrosion resistance, wide range of applications, high thermal efficiency, and low cost. Their price is higher than that of carbon steel heat exchangers, but similar to that of stainless steel heat exchangers.
Graphite-based chemical equipment is widely used in industries such as chlor-alkali, silicone, pesticides, dyes, pharmaceuticals, polysilicon, fluorine chemicals, and other fine chemical sectors. Graphite-based chemical equipment mainly includes graphite heat exchangers, graphite falling film absorbers, graphite reactors, graphite synthesis furnaces, Class A4 non-metallic pressure vessels, graphite tower-type equipment, as well as various custom-made devices.
After using polymer materials to repair leakage points and corrosion defects, applying a protective coating solves the problem; we have done a lot of work in this area. It would be best if you sent some information about the operating conditions and photos first, so that I can provide you with a detailed solution.
Using a graphite heat exchanger is cheaper and more durable than metal ones
What are the operating conditions of your heat exchangers? What are the materials of the heat exchange tubes and tube sheets? We’ve had leaks here as well, but they’ve all been resolved!
Many heat exchangers used in the polysilicon industry operate under high temperature and pressure conditions, and there may even be frequent temperature fluctuations. In such cases, does the cost advantage of graphite heat exchangers still hold?
Many units in the polysilicon industry use graphite heat exchangers, especially some companies abroad.