| 摘要 |
The invention relates to thermal processing of a hydrocarbon raw material, in particular it relates to utilization of the worn tyres, and allows improve efficiency of said processing, with lower energy requirements, and produce quality products that can be suitably used for recycling.
A method for thermal processing of the worn tyres comprises the steps of: pyrolysis of the comminuted tyres proceeding at 550-800
C in the medium of a reducing gas, with separation of the pyrolysis products; wherein at least a portion of the reducing gas is produced in a generator of reducing gases that comprise hydrocarbons. The novel feature is that as one portion of the reducing gases used are the pyrolysis gaseous products with vapours of liquid hydrocarbons, and as the other portion used are the flue gases supplied into the reactor. Pyrolysis is preferably carried out at total ratio of the reducing gas and the processed material being 0.8-0.1.2. : 1; and the flue gases are delivered into the reactor at the ratio of 0.25-0.50 : 1, at temperature of 120-180
C. The method according to the invention is carried out in a device, comprising: a reactor, a system for collecting the gases formed in the reactor, a reducing gas generator connected to the reactor, a system for delivery of the comminuted tyres into the reactor, and a receiving means to accommodate the pyrolysis solid residue; the system for collecting the, gases formed in the reactor is connected to the reducing gases generator and to a heat-producing unit having a means for removing the flue gases; the flue gases removal means being connected to the reducing gases generator and reactor. The device can be further supplemented with a system for educing the fraction of liquid hydrocarbons, which system is designed to be connected to the system for collecting the gases formed in the reactor. (2 ind. claims, 1 fig.) |
