Alkali solution concentration for liquefied gas alkali washing
Thread Content
Please give some advice: Generally, the concentration of the alkali solution used for the alkaline cleaning of liquefied gas is kept at 6-10%. Is it okay if the concentration of this alkali solution is higher? Will a concentration exceeding 20% affect the effectiveness of the alkaline cleaning?
Generally, for the alkaline washing of liquefied gas, we keep the concentration of the alkali at 10-15%; it should not exceed 20%. I’m not sure what your goal is The impact should be minimal; there’s no need for such high intensity.
We generally control the alkali solution concentration at 15-18%
15%---20%, ours is self-circulating. In my opinion, the concentration of the alkaline solution is related to its density, and the density increases after it has been used. Therefore, if the concentration is too low, it affects the effectiveness; if it’s too high, forced circulation becomes difficult. We only resort to using a pump for forced circulation when the self-circulation system doesn’t work properly even after replacing the alkaline solution
The concentration of the alkali solution we use is 10%-15%. The level of this concentration is determined based on the desulfurization efficiency; at a constant temperature, as the concentration increases, the desulfurization effect improves. However, once a certain concentration is reached, increasing the alkali concentration further actually reduces the effectiveness. As the concentration increases, salting out also increases, leading to higher energy consumption in the cycle. The viscosity increases, and there will also be more alkali. It’s just my personal opinion; I hope it helps.
Could you tell me at what concentration the effect declines?