In the process of using stainless steel tube heat exchangers, problems such as excessive pressure drop often occur, which will lead to a series of consequences. It is not difficult to solve this problem, it just needs to be dealt with comprehensively from multiple aspects.
On the one hand, it is the use of circulating water, mainly secondary circulating water. Soft water after softening should be used as the secondary circulating water of the tube heat exchanger. This can control the impurity content in the water to not exceed the standard and ensure its purity.
On the other hand, it is aimed atStainless steel tube heat exchangerFor central heating systems, the method of adding water from the first to the second time can be used. Another point is also very important ,That is to regularly clean the dirt in the heat exchanger flow channels or the scale on the plates.
When cleaning the scale on the surface of the plates in the heat exchanger, you can use a sulfamic acid solution or a nitric acid solution containing methenamine, aniline, and thiocyanic acid as the cleaning fluid.,and control the cleaning temperature at40°C-60°C ,Not too high or too low.
If chemical immersion cleaning is performed without disassembling the stainless steel tube heat exchanger, it is necessary to first open the cold medium inlet and outlet, or install cleaning ports on the medium inlet and outlet pipes when installing the equipment, and inject the prepared cleaning liquid into the equipment.
But it is much simpler to disassemble and clean. Soak the plates of the stainless steel tube heat exchanger in the cleaning fluid.30minutes, then use a soft brush to gently brush away the scale, and then clean it with clean water. During the cleaning process, damage to the plate and rubber pad should be avoided.