How to remove hydrochloric acid

The original poster made it quite mysterious. I want to answer, but I need to guess first. Is this certain organic substance mixed into the hydrochloric acid solution in solid form? If so, the technology for solid-liquid separation is gone. Is this organic compound dissolved in an aqueous hydrochloric acid solution? If so, but it has not reached saturation (the liquid-phase activity coefficient is less than 1) and it is at a low temperature (below 100 degrees), does it matter whether it sublimes or not? It is estimated that the poster wants to first concentrate the liquid mixture through distillation or evaporation and then cool it to induce crystallization in order to obtain a certain organic compound, but is worried that high temperatures might destroy that organic compound. Don’t worry. First of all, it’s highly unlikely that a certain organic compound will be separated as an overhead component during distillation, as long as the distillation column is operating properly. Furthermore, hydrochloric acid is an azeotrope, with its azeotrope temperature at around 110 degrees (containing 20% HCl). For your concentration of hydrochloric acid, the bottom temperature of the distillation column will not exceed 110 degrees. Of course, low-temperature multi-effect evaporation can also be used, with even lower operating temperatures. Due to the presence of hydrochloric acid, higher requirements are placed on the material. If a certain organic compound is polar, the surface tension of the resulting aqueous solution (hydrochloric acid solution) does not decrease significantly, in which case our membrane-based multi-stage multi-effect evaporation method can also be considered. Compared to conventional multi-effect evaporation, it requires less investment and energy consumption. If it is simply some organic compound that has crystallized and contains a small amount of hydrochloric acid, then drying it at normal pressure at 110 degrees should not pose any major problems! At this temperature, the De Sheng Hua Sun of a certain organic compound should be very small.

1. Sublimation can be used for separation: Is the organic compound still a solid when mixed in hydrochloric acid solution? 2. A is a solid, so filtering should suffice, but it doesn’t seem that simple, right? Can B be dissolved, and can distillation–condensation be used for separation?