Why does the hydrophobicity issue persistently plague many companies

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This post was last edited by Fuleide on 2023-7-26 10:37. Why does the problem of hydrophobicity continue to plague many companies? In steam systems, hydrophobic devices serve to remove water, prevent steam from entering, and discharge air. The hydrophobicity level affects steam consumption, equipment efficiency and lifespan, as well as the quality of the products produced. For a long time, the problem of steam system condensate has plagued numerous steam users, with industrial enterprises that consume large amounts of steam in their production processes suffering the most from it. Although every company has never stopped seeking solutions, very few actually succeed in solving their problems. What exactly is the reason for this? Today, Fred will use his years of market research and on-the-ground experience to discuss and share with everyone the reasons behind this. Principles and Classification: Based on their working principles, steam traps are mainly divided into three categories: thermodynamic, thermostatic, and mechanical. Each major category is further divided into various subcategories based on factors such as moving components, materials, hydrophobic temperature, and hydrophobic channels. Different steam traps are suitable for different applications, and none of them is universal. This requires that, when selecting a steam trap, one must understand the working principles and operating mechanisms of various types of steam traps, as well as be able to correctly distinguish between them. In fact, most suppliers have a confused and ambiguous classification of steam traps, and even fewer are thoroughly familiar with the working principles of various types of steam traps. The vast majority of users have only a superficial understanding of the principles and classifications of steam traps. The shortcomings on the part of supply and demand sides in these areas have led to a chaotic situation regarding the use of check valves. Functions and Applications: Generally speaking, the function of a steam trap is to remove water, prevent steam from entering, and discharge air; moreover, the water-removal function can be further divided into enhancing efficiency and providing insulation. The former makes efficient use of the latent heat of steam, with a hydrophobic temperature equal to the saturation temperature ； The latter utilizes the latent heat of steam and part of the sensible heat to dehydrate at temperatures below saturation. How much hydrophobicity is required below the saturation temperature depends on the process conditions. For production equipment that seeks fast heating speeds and high efficiency, efficiency-enhancing steam traps are more suitable ； For equipment that does not require rapid heating and needs to maintain a steady temperature after heating (such as interlayer pots used for cooking in canteens), thermal insulation steam traps are more energy-efficient. When the requirements of practical applications and the functions of a steam trap do not match well, the steam-trapping performance will naturally be poor. Brand and Quality: The quality of steam traps is influenced by numerous factors, including product design, material selection, manufacturing processes, production precision, testing and calibration, and quality management. Any deficiency or problem in any of these aspects can affect the performance, reliability, and service life of the steam traps. Ensuring a high standard in all these aspects (product research and development, processing and manufacturing, market testing and feedback, product iteration, and corporate management) is something that only companies with decades of experience can achieve, and such brands are extremely rare. The actual situation is that many domestic brands engage in OEM production; the brand owners prioritize low prices, while the manufacturers strive to minimize costs. Most steam users are unaware of these situations. Therefore, for users, choosing the brand and quality of steam traps is also a challenge. Process and Selection: For many years, steam users have primarily followed a procurement process that involved requesting quotes based on shape (general category) and diameter, and then comparing those quotes. From time to time, Fred encounters customers who judge products by their appearance; they insist that the check valves we supply are identical to those used on site, when in fact they are only similar in appearance. It is not uncommon to see this phenomenon of focusing only on the appearance while ignoring internal characteristics and qualities such as the brand, quality, distribution capabilities, and operational parameters. Such an approach makes it almost impossible to select the proper drain valve. A scientific and effective approach is to properly select the type of steam trap based on factors such as the application scenario, requirements of the production process, structure and operating characteristics of the steam-using equipment, condensate flow rate, condensate backpressure, and its discharge destination. On this basis, further select steam traps that meet the highest pressure, temperature, pressure difference, and maximum flow requirements, and can operate within the \"comfort zone\" when the steam-using equipment is running stably. Misunderstandings and misguidance: Many customers are unable to properly distinguish between new steam and flash steam, and as a result, they mistake normal flashing at the outlet of the steam trap for a leak in the trap. As a result, some manufacturers introduced \"leak-proof\" steam traps or steam drainage devices, and promoted them heavily using this as a selling point. This is actually purely a form of misguidance. As mentioned above, steam traps come in efficiency-enhancing and heat-insulating types. In the case of efficiency-enhancing steam traps, the saturated condensate discharged releases some of its sensible heat when the pressure downstream decreases, resulting in the formation of flash vapor; this is a normal phenomenon, just like the white steam that appears when pouring water from a thermos bottle. The simplest way to eliminate flash vapor is to use insulated steam traps, but this will lead to water accumulation inside the equipment and a reduction in production efficiency. Operation and maintenance: The valve core and seat inside the steam trap are crucial components for draining water and preventing steam leakage. However, they can easily become clogged in environments containing rust, scale, and other impurities, leading to poor drainage and water accumulation within the equipment ； The valve core can also get stuck, resulting in steam leakage due to improper sealing between the valve core and the valve seat. Furthermore, the repeated opening and closing actions of the steam trap can easily cause wear on the valve core and seat, especially when the steam trap is selected to be too large in size. Therefore, it is necessary not only to regularly clean the filters placed in front of or built into the steam trap, but also to periodically flush the valve core and seat of the steam trap as appropriate. In addition, it is necessary to regularly check the condition of the valve core and valve seat; if wear occurs, they should be replaced promptly. In summary, to fundamentally resolve the hydrophobicity issue, it is necessary to fully understand, properly manage, and effectively implement the six aspects mentioned by Fred; any problem in any of these aspects will affect the outcome. From a statistical perspective, the probability that none of the six aspects have issues at the same time is only 1.56%. It seems that fundamentally solving the hydrophobicity problem is indeed not an easy task; no wonder this issue has been plaguing thousands of companies.