Calculation of whether the steam inlet will cause erosion on the opposite cylinder
Thread Content
There is currently a DN2700 storage tank, with the saturated steam inlet located on the tank body; the steam flow velocity is 30 m/s. Could this cause erosion corrosion on the opposite side of the tank body? I seek advice – how are calculations done for such issues?
At this flow rate, it reaches the opposite wall in 0.1 seconds; even though there is indirect expansion after entering the tank, I believe erosion is inevitable... PS: What is the main function of this steam? Why can’t some kind of equalizing device be used to avoid this?
Steam is used as a reducing catalyst. To improve the equipment, is there any calculation model available for dealing with this scouring effect on the tube walls? Do you mean the type of equalization device you mentioned? Have we worked on something like that before? We have indeed used distributors and similar devices on our internal components, but using them on such storage tanks seems a bit too complicated. I didn’t expect one that would fit.
Yes, baffles can be installed. I’m wondering about similar things – for example, at what flow rate it’s necessary to install them, or under what circumstances they are required. Are there any regulations or empirical values regarding this? Thank you for your reply
The area most severely affected by erosion is the outside of the inner cylinder where the steam inlet is located during jacketed steam heating. In design, it is generally required that ρ·ν**2 at the steam inlet be less than 740 (kg/m2·s); alternatively, an erosion-resistant plate can be welded to the outside of the inner cylinder at the location of the steam inlet, in order to prevent erosion damage to the cylinder.
Hello, may I ask if there are similar numerical regulations for what’s inside the tank? Where is it specified, or is it based on experience?
Similar to the pipeline indicated as 11 in the figure.
Generally, there is no need to worry about erosion when the steam outlet enters the tank, or the outlet can also be designed as a plug-in type. ρ·ν**2＜740 is an empirical value; refer to the conditions for installing anti-erosion plates at the inlet of the heat exchanger (the gas inlet is assumed to be a corrosive medium for now).
From a process perspective, installing inlet baffles and flash discharge plates