| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas distribution device which is subject to less corrosive wear, in a process to crack a hydrocarbon raw material such as a fluid catalytic cracking process (FCC).SOLUTION: An injection nozzle related to a hydrocarbon raw material cracking process is disclosed. In one embodiment, a gas distribution device includes a distribution manifold in fluid communication with a plurality of injection nozzles, the injection nozzle includes a tube having a fluid inlet and a fluid outlet, and the fluid inlet includes an annular orifice surrounding a flow restriction part, a plurality of radial flow restriction orifices are disposed through the tube within a range of a length L from an axial end of the tube proximate to the inlet, and the length L may be less than two times the inner diameter of the tube. In another embodiment, the fluid outlet may be disposed on the outside of an outer circumference of the distribution manifold. In yet another embodiment, the length of the tube may be at least five times the inner diameter of the fluid outlet. |
