Abstract
The experiments on the formation of R 11 hydrate in water and aqueous solutions of ethanol(3.6% and 10%), n-propanol(0.9%) and n-butanol(1.9%) were carried out. The solution(600 g) and R 11 liquid(60-70g) in the reactor are mixed with constant aqitator speed of 400rpm during the experiments, and the following results were obtained : (1) R 11 hydrate is crystallized to form suspension and it is found that super cooling degree of the solution is a driving force for the formation of the hydrate. (2) The formation of the hydrate in water is fairly slow, and the percent conversion of R 11 is about 11% after 2 hours. (3) In the aqueous alchohol solutions, the formation of the hydrate is remarkably promoted with decreasing the surface tension of the solution. (4) As an example, when 1.9% n-butanol solution is used, the percent conversion of R 11 after 2hours is about 91%, which is sufficient for paractical use.
