1, first slowly add acetic acid into calcium carbonate until there are no bubbles, until acetic acid reacts with calcium carbonate to generate calcium acetate, water and carbon dioxide.

2. Saturate the solution by evaporation.

3. Slowly add alcohol to the solution.

4. After the solution is cooled, solid alcohol can be obtained.

5. Put the obtained solid alcohol into an iron can and ignite it when using.

Solid alcohol is not solid alcohol, but a gel formed by calcium acetate and alcohol. Calcium acetate is soluble in water, but insoluble in alcohol. When these two solutions are mixed, calcium acetate precipitates in alcohol in the form of gel. The liquid gradually thickens from turbidity and finally condenses into a solid block.

Extended data:

As a solid fuel, solid alcohol has the advantages of convenient use, convenient transportation, less environmental pollution when burning, safer and more reliable than liquid alcohol, and is widely used in catering, tourism and field work.

Because stearic acid can't be completely dissolved, solid alcohol can't be produced at very low temperature.

References:

Baidu encyclopedia-solid alcohol