by fractionating what 39 s more the combustible gas which was desulfurized by the conventional desulfurization method can be directly expelled into or stored and then expelled into the heating furnace for burning the rest parts exercise the same as the existing technologies the components and weight percentage of the catalyzer are as following the model of molecular sieve is y and the weight percentage is 50 the active alumina is 30 wt the zinc oxide is 20 wt the active argil is 15 wt and the kaoline is 5 wt the steel wires were separated from rubber by drawing the waste rubber into thread and then the big pieces of rubber were broken up into granule the weight ratio of catalyst and rubber is 2 1000 and then the mixture is transported into the reactor for the cracking reaction the cracking temperature is 450 u00b0 c the cracking time is 10 minutes and the heating temperature difference in the cracking chamber is 5 u00b0 c the liquid state product can be made into needing oil by fractionating moreover the gas state and solid state products can be given up directly or treated further by the conventional method in this example the heat carrier was heated at the furnace and transported into the reactor then the heat carrier supplied a quantity of heat for the cracking process the cracking gas can get combustible gas and oil by fractionating moreover the combustible gas which was desulfurized by the conventional desulfurization method can be directly expelled into or stored and then expelled into the heating furnace for burning what 39 s more the temperature.