Topic
Penex
About: Penex is a research topic. Over the lifetime, 86 publications have been published within this topic receiving 1184 citations.
Papers published on a yearly basis
Papers
Patent•
12 Jul 1996
TL;DR: In this paper, a catalytic cracked naphtha is desulfurized with minimum loss of olefins and octane with a first distillation column reactor (10) which acts as a depentanizer or dehexanizer with the lighter material containing most of the olefs and mercaptans being boiled up into a distillation reaction zone (11) where the mercaptan are reacted with diolefs to form sulfides which are removed in the bottoms along with any higher boiling sulfur compounds.
Abstract: A catalytic cracked naphtha is desulfurized with minimum loss of olefins and octane. The naphtha is fed to a first distillation column reactor (10) which acts as a depentanizer or dehexanizer with the lighter material containing most of the olefins and mercaptans being boiled up into a first distillation reaction zone (11) where the mercaptans are reacted with diolefins to form sulfides which are removed in the bottoms along with any higher boiling sulfur compounds. The bottoms are subjected to hydrodesulfurization in a second distillation column reactor (20) where the sulfur compounds are converted to H2S and removed. The lighter fraction containing most of the olefins is thus not subjected to the more harsh hydrogenation conditions of the second reactor (20).
88 citations
TL;DR: The isomerization process is gaining importance in the present refining context due to limitations on gasoline benzene, aromatics, and olefin contents as discussed by the authors, and it is a simple and cost-effective process for octane enhancement compared with other octane-improving processes.
Abstract: The isomerization process is gaining importance in the present refining context due to limitations on gasoline benzene, aromatics, and olefin contents. The isomerization process upgrades the octane number of light naphtha fractions and also simultaneously reduces benzene content by saturation of the benzene fraction. Isomerization complements catalytic reforming process in upgrading the octane number of refinery naphtha streams. Isomerization is a simple and cost-effective process for octane enhancement compared with other octane-improving processes. Isomerate product contains very low sulfur and benzene, making it ideal blending component in refinery gasoline pool. Due to the significance of isomerization to the modern refining industry, it becomes essential to review the process with respect to catalysts, catalyst poisons, reactions, thermodynamics, and process developments. The present research thrust in this field along with future scope of work is also discussed briefly. The isomerization process is ...
69 citations
Patent•
23 Dec 1999
TL;DR: In this article, a process for the production of synthetic naphtha fuel suitable for use in compression ignition (CI) engines is described, the process including at least the steps of hydrotreating at least a fraction of a Fischer-Tropsch (FT) synthesis reaction product of CO and H2, or a derivative thereof, and fractionating the process products to obtain a desired synthetic nophtha fuel characteristic.
Abstract: The invention provides a process for the production of a synthetic naphtha fuel suitable for use in compression ignition (CI) engines, the process including at least the steps of hydrotreating at least a fraction of a Fischer-Tropsch (FT) synthesis reaction product of CO and H2, or a derivative thereof, hydrocracking at least a fraction of the FT synthesis product or a derivative thereof, and fractionating the process products to obtain a desired synthetic naphtha fuel characteristic. The invention also provides a synthetic naphtha fuel made by the process as well as a fuel composition and a Cloud Point depressant for a diesel containing fuel composition, said fuel composition and said depressant including the synthetic naphtha of the invention.
65 citations
Patent•
16 Feb 2001
TL;DR: In this article, a process for concurrently fractionating and treating of a full-boiling range naphtha stream is described, where the stream is first subjected to simultaneous thioetherification or selective hydrogenation, and then split into a light boiling range Naphtha, an intermediate boiling rangeNaphtha and a heavy boiling range NE. The bottoms are subjected to concurrent hydrodesulfurization and fractional distillation and the combined overheads and bottoms were fed to the polishing reactor.
Abstract: A process for concurrently fractionating and treating of a full range naphtha stream. The full boiling range naphtha stream is first subjected to simultaneous thioetherification or selective hydrogenation and splitting into a light boiling range naphtha, an intermediate boiling range naphtha and a heavy boiling range naphtha. The intermediate boiling range naphtha containing thiophene and thiophene boiling range mercaptans, dienes or mixtures may be subjected to a second thioetherification or selective hydrogenation, depending on its make-up, and then passed on to a polishing hydrodesulfurization reactor or the entire intermediate stream may be passed directly to the polishing reactor. The bottoms are subjected to concurrent hydrodesulfurization and fractional distillation and the combined overheads and bottoms are fed to the polishing reactor. The effluent from the polishing reactor may be combined with the light boiling range naphtha to produce a new full boiling range naphtha containing substantially less total sulfur than the original feed. The object being to meet higher standards for sulfur removal, by treating the components of the naphtha feed with the process that preserves the olefinic while most expediently removing the sulfur compounds.
53 citations
Patent•
10 Aug 1999
TL;DR: A flow diagram of one embodiment of the invention having one catalyst bed (14A) in a distillation column/naphtha splitter (14) is shown in this article.
Abstract: A flow diagram of one embodiment of the invention having one catalyst bed (14A) in a distillation column/naphtha splitter (14).
52 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2017 | 6 |
| 2016 | 3 |
| 2015 | 4 |
| 2014 | 1 |
| 2013 | 6 |
| 2012 | 2 |