Abstract:

Coke sample is made by the method in which the coke with a certain grain size is immersed in the solution of alkali metal compounds（K2CO3+Na2CO3） with different proportioning ratios. The CRI  experiment is carried out for coke sample by the use of thermogravimetric balance, and analysis is done by SEM and energy spectrum. The result of the study shows that the composite catalysts of alkali metals K and Na with different proportioning rates have different catalysis results. K2CO3 has a greater contribution to the catalysis of the reaction of loss by solution of coke. The main catalysis time of the reaction of loss by solution of coke is the first 10 minutes. The K and Na contents in coke sample immersed in alkali metal solution are increased with the increase of K and Na contents in alkali solution.