Processes for isomerizing hydrocarbons
US10414990B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 3, 2018 |
| Grant date | Sep 17, 2019 |
| Priority date | — |
| Expiry date | May 3, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G67/14
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Processes and apparatus for isomerizing hydrocarbons are provided. The process comprises isomerizing the hydrocarbon feed stream in the presence of an isomerization catalyst and hydrogen in an isomerization zone under isomerization conditions to produce an isomerized stream. The isomerized stream is stabilized in a stabilizer column to provide a stabilizer off-gas stream and a liquid isomerate stream. The stabilizer off gas stream is passed to a net-gas scrubber to obtain a net gas scrubber off-gas stream comprising hydrogen and C1-C4 hydrocarbons. The net gas scrubber off-gas stream is contacted with an absorber liquid feed comprising C5 to C7 hydrocarbons in an absorber column to provide an absorber overhead stream comprising predominantly hydrogen and an absorber bottoms stream comprising predominantly light ends, the light ends comprising C1-C4 hydrocarbons. The absorber overhead stream is passed to the isomerization zone as make-up hydrogen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.