Separation processes for pyrolysis products of annular jet vortex chamber reactor
US12351550B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2022 |
| Grant date | Jul 8, 2025 |
| Priority date | — |
| Expiry date | Jun 30, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2400/20
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for producing ethylene comprising introducing fuel, ethane/higher hydrocarbons, oxygen, steam to annular jet vortex chamber having combustion upstream of cracking to provide swirling fluid flow pattern producing cracking product (ethylene, acetylene, ethane, methane, 10-60 wt. % water, CO2, CO, hydrogen, oxygenates) having first temperature; cooling cracking product with residence <2,000 milliseconds yielding first cooled product having second temperature lowered by ≥30° C.; cooling first cooled product yielding second cooled product having third temperature lowered by ≥300° C. and heated heat exchange medium; separating second cooled product into removed water (water, oxygenates), and cracked gas (ethylene, acetylene, ethane, methane, CO2, CO, hydrogen) introduced to continuous regeneration CO2 removal unit producing CO2-lean gas having at least 10× less CO2; introducing CO2-lean gas to once-through CO2 removal unit producing CO2-depleted gas (ethylene, acetylene, ethane, methane, CO, hydrogen); separating CO2-depleted gas into ethylene, ethane, tail gas (methane, CO, hydrogen).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.