High temperature liquid injection apparatus
US5346133A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 1993 |
| Grant date | Sep 13, 1994 |
| Priority date | — |
| Expiry date | Mar 25, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2219/00155
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A feed line to a pyrolysis furnace and a liquid injection apparatus for introducing a liquid coke inhibitor in the feed line are disclosed. The injection apparatus includes a central passageway for supplying the liquid coke inhibitor, an annular passageway for delivering an atomizing gas and a mixing reservoir for mixing the liquid and gas wherein the mixed fluid is atomized by passage through an orifice in a nozzle. A cooling jacket surrounding the annular passageway prevents decomposition of the coke inhibiting agent which products can plug the nozzle. The injection apparatus is typically installed in a bend of a process feedstock conduit with a discharge end aligned to an axis of the flow. A hot injection point close to the inlet of the pyrolysis furnace is preferred for best results. To help ensure complete evaporation of a carrier liquid prior to the furnace, the injection apparatus can include an evaporation shroud. For a modularized injection system, the evaporation shroud can include a larger diameter bonnet exterior to the conduit having the injection apparatus attached thereto. For a retractable injection system, the injection apparatus is received within an isolation val…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.