Abstract:
An oil sludge pyrolysis device, including an outer cylinder body and an inner cylinder body, a spiral conveyor belt being provided on an inner wall of the inner cylinder body, and thermally conductive pipes being provided on the spiral conveyor belt. The device enlarges the heat exchange area during oil sludge pyrolysis, improves the heat exchange efficiency and the heat utilization rate, and increases the pyrolysis speed of oil sludge at a low temperature.
Abstract:
A feed injector for a circulating fluid bed reactor is fitted with a discharge nozzle with a circular, radially notched discharge orifice to improve the surface-to-volume ratio of the spray pattern formed by the nozzle. The feed injector is useful for injecting fluids into various types of circulating fluid bed reactors in which good contact between the components of the fluidized bed and the injected fluid is required. It is particularly useful in fluid coking reactors.
Abstract:
The liquid feed nozzle assemblies for a circulating fluid bed reactor comprise (i) a throttle body premixer to combine liquid feed with atomization steam to form a liquid feed/steam mixture comprising gas bubbles in liquid; (ii) a conduit connected to the premixer and to a discharge nozzle to convey a flow of the liquid/steam mixture created by the premixer to the nozzle body; (iii) a discharge nozzle connected to the flow conduit to shear the liquid feed/steam mixture to create liquid feed droplets of reduced size and (iv) a disperser at the outlet of the discharge nozzle to provide a spray jet of liquid feed having an increased surface area relative to a cylindrical jet. The nozzle assembles are particularly useful in fluid coking units using heavy oil feeds such a tar sands bitumen.
Abstract:
Carbonaceous materials are pyrolyzed by simultaneous feed of the carbonaceous materials and a particulate source of heat to a cyclone reactor-separator wherein the centrifugal forces separate the vaporized product of pyrolysis from the solids. The carbon in the solids is partially combusted for recycle to the cyclone reactor separator and the vaporized products quenched and recovered. The yield of liquid hydrocarbons may be maximized.