A good method to solve alkali solution crystallization.
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Our desulfurization system’s alkali tank is equipped with two level gauges: one of the double-flange type and the other of the glass tube type. The bottom valves and pressure guide pipes often get clogged due to crystallization, and it is very inconvenient and dangerous to open them for cleaning. As a solution, we installed a tee at the pressure guide pipe and introduced steam, using a DN15 needle valve to control the amount of steam supplied; since then, no more crystallization has occurred. This approach works well. It should be noted, however, that insulation is necessary in winter, and the amount of steam used should be kept as low as possible.
In fact, a steam backflush system has been added
Is it really that useful? What should one be careful about in winter?
Good note, are there any photos from the scene? Sent it over to learn* from it.
When steam is blown in, doesn’t the concentration of the alkali decrease? Not all of the condensate goes into the tank
I had considered this method before, but the capacity of the alkali tank is limited; introducing steam directly will cause water hammer, and over time the liquid level in the alkali tank will rise as well! The alkali residue that had settled at the bottom of the tank was also dug out. It doesn’t work well!