Steam production system
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I would like to ask the professionals here: I am conceiving a steam generator system, but the feed water contains a small amount of particles with a diameter of less than 1 mm and a specific gravity of around 1.2, at a concentration of approximately 1%. My idea is that this particle should keep accumulating in the liquid phase system, and once equilibrium is reached it should be able to enter the vapor phase. Is such an idea possible? If that’s not possible, could adding some surfactant to the water be used to make the tiny particles stick to the foam, so that they can be carried into the steam by the foam? Would that work? reward_7ree
Simply put: I use dirty water to produce steam. Is that okay? Has anyone used a similar system?
Personally, I think a small portion will enter the steam, but most will remain in the saturated water; therefore, continuous drainage is necessary. Particulates are likely to cause severe erosion, corrosion, and scaling of the equipment in the steam system.
This idea doesn’t seem very realistic. Take one of our bottom reboilers for example; it’s similar to a steam generator, and it becomes clogged and unusable in less than half a year.
Thank you for the example; it seems there is still no good solution.
The steam and water parameters for boilers are subject to specific standards depending on the pressure level; soft water or grade-1 deionized water is used for low-pressure boilers, while grade-2 deionized water is used for medium and high-pressure boilers. There are requirements regarding conductivity, pH value, and silicon content. “\"Dirty water\" is definitely not acceptable; it can lead to serious accidents such as pipe bursts. If the goal is merely to eject solid fine particles using the kinetic energy of steam, it is possible to consider designing a vapor (gas)-solid ejector at the outlet, utilizing negative pressure to \"suck\" out the solid particles.
What the poster is proposing – namely ejecting particles through the gas phase within a liquid-phase system – is itself a difficult process to implement. Moreover, the particles in question are quite large, with a diameter of 1 millimeter; such particles can easily be filtered at the inlet stage. Otherwise, as mentioned earlier, the pipes will suffer severe wear
Liquid water and steam are two different concepts; water has adsorption properties, whereas steam does not. This is why distilled water appears very clean (even though it contains many ions)
Personally, I think that even if it were implemented, the results would likely not be satisfactory, just like what was mentioned above regarding scaling and such
Is the poster trying to recover certain highly valuable catalyst particles from wastewater? Are you from a research institution? Your question can only be described as vague and incomplete – there are too many shortcomings, so people can only rely on hints. Turning dirty water into steam is quite creative of you; from your description, it doesn’t seem like the work of a design institute or an engineering company, as those organizations are usually more sensitive to data. Your information is lacking, and it also doesn’t resemble that of technical personnel from companies with extensive experience in production, because no one would think that way. You should know this just by looking at the replies above. The OP might want to take a look at these questions: 1. Is the process confidential? From your description, it seems to be about vaporizing the water containing particles, with the hope that those particles will be carried away along with the steam, is that correct? If it doesn’t have to be kept confidential, could you provide a rough flowchart? If there is no flowchart or it’s still in the planning stage, could you explain it in a bit more detail? At least you should give a rough account of how this mess of yours came about. . . 2. No matter how the original poster handles the water and particles, it seems like something similar to turning milk into milk powder and then blowing out that milk powder with steam – is that right? Do you still need the water from the milk? Your conditions are far too poor. 3. Is your main goal to treat water or particles? Which one holds a primary position? Does your confidential process allow water and particles to be treated separately? If treating water to turn it into steam, what specific technical requirements do you have for the steam? Temperature, pressure, saturated steam? Is the steam too hot? Does this particle have to be carried into the steam? Can we filter it first and then blow it out with high-speed steam? 4. “My idea is that I hope these particles will continue to accumulate within the liquid phase system.” That statement is really confusing…… Are your particles wear-resistant? How is the strength? With the constant agitation of steam and water, cooking both meat and porridge at the same time – isn’t there a risk that it will end up as a mess of pulp? Even if this bit of glue is localized. . . If the process is unclear, then the methods used will also be unclear. Whether it’s steam soot blowers, steam granulation, or pressure stream drying – there are many industrial methods available. It’s like the medicines at Huang Yaoshi’s disposal; yet your description doesn’t allow Huang Yaoshi to take your pulse or examine your complexion. You just say you have a stomachache – how can he prescribe medicine for you, let alone prepare it?
Based on the properties and concentration of particles in the incoming water, it is a practically viable design approach to first remove these particles to purify the water before it enters the steam generator. The advantages of this approach are: 1. Lower costs (heating the particles before removing them results in energy waste); 2. It prevents blockages in the heat exchangers in advance; 3. It is easier to remove particles. Methods that can be used to remove particulates: 1. Hydrocyclone separation 2. Filtration 3. Natural gravity sedimentation 4. Centrifuge separation