Continuous Regenerative (moving bed) CCR Platforming – UOP Process. In this process, three or four reactors are installed one on the top of the other. Our Garden City RF2 fans are perfect for Continuous Catalyst Regeneration in oil refineries. We set the standards for the chlorination and regeneration blowers. This course provides an overview of the CCR Platforming unit with a CycleMax or pressurized regenerator. The principles of catalyst regeneration and.
|Published (Last):||3 March 2016|
|PDF File Size:||12.51 Mb|
|ePub File Size:||10.87 Mb|
|Price:||Free* [*Free Regsitration Required]|
Also, not all refineries process the same crude oils and each refinery produces its own straight-run naphthas with their own unique initial and final boiling points. Most catalysts require both sulphur and nitrogen content to be lower than 1 ppm. Indeed, if not chlorinated or insufficiently chlorinated the platinum and rhenium in the catalyst would be reduced almost immediately to metallic state by the hydrogen in the vapour phase.
The reformate has a much higher content of benzene than is permissible by the current regulations in many countries. It is the straight-run heavy naphtha that is usually processed in a catalytic reformer because the light naphtha has molecules with 6 or fewer carbon atoms which, when reformed, tend to crack into butane and lower molecular weight hydrocarbons which are not useful as high-octane gasoline blending components.
Main licensors of catalytic reforming processes, UOP and Axens, constantly work on improving the catalysts, but the rate of improvement seems to be reaching its physical limits. The liquid feed at the bottom left in the diagram is pumped up to the reaction pressure 5—45 atm and is joined by a stream of hydrogen-rich recycle gas.
The naphtha from the crude oil distillation is often further distilled to produce a “light” naphtha containing most but not all of the hydrocarbons with 6 or fewer carbon atoms and a “heavy” naphtha containing most but not all of the hydrocarbons with more than 6 carbon atoms.
Catalytic reforming – Wikipedia
Usually, three reactors are all that is required to provide the desired performance of the catalytic reforming unit. The overhead liquid distillate is called naphtha and will become a major component of the refinery’s gasoline petrol product after it is further processed through a catalytic hydrodesulfurizer to remove sulfur -containing hydrocarbons and a catalytic reformer to reform its hydrocarbon molecules into more complex molecules with a higher octane rating value.
Owing to too many components in catalytic reforming process feedstock, untraceable reactions and the high temperature range, the design and simulation of catalytic reformer reactors is accompanied by complexities.
Our products are designed according to recognized global industry standards for the continuous regeneration process. This means that the reformate should either be further processed in an aromatics extraction unit, or blended with appropriate hydrocarbon streams with low content of aromatics.
Catalytic reforming is a chemical process used to convert petroleum refinery naphthas distilled from crude oil typically having low octane ratings into high-octane liquid products called reformateswhich are premium blending stocks for high-octane gasoline. High pressure catalyst regeneration fans are very stable, typically with a minimum of 12mm thick casing, bracing on mm centers, rigid sub-base mounting, tight anchors on the inlet, and anvils in the housing to resist forces.
UOP CCR PLATFORMING
The benzene extracted can be marketed as feedstock for the chemical industry. Some catalytic reforming units have an extra spare or swing reactor and each reactor can be individually isolated so that any one reactor can be undergoing in situ regeneration while the other reactors are in operation.
Toggle pllatforming contact us. It should be noted that there are a great many petroleum crude oil sources worldwide and each crude oil has its own unique composition or “assay”.
The table just below lists some fairly typical straight-run heavy naphtha feedstocks, available for catalytic reforming, derived from various crude oils.
The manufacturing process is initiated by a testing and traceability procedure used to check the quality of the alloy rich materials used to fabricate your fans for conventional and high pressure catalyst regeneration process fans. As the vaporized reactants flow through the fixed bed of catalyst in the reactor, the major reaction is the dehydrogenation of naphthenes to aromatics as described earlier herein which is highly endothermic and results in a large temperature decrease between the inlet and outlet of the platforimng.
If you would like to submit an enquiry please get in touch. Catalytic reforming has a limited ability to process naphthas with a high content of normal paraffins, e. Throughout the process, controlled audit procedures monitor the efficiency of our operation. Rate equations of this type explicitly account for the interaction of chemical species with catalyst and contain denominators in which terms characteristic of the adsorption of reacting species are presented.
Various bearing lubrication methods are available for the monoblock bearing assembly including static oil, forced pplatforming, or oil mist lubrication. Instead, when needed, the aged catalyst was replaced by fresh catalyst and the aged catalyst was shipped to catalyst manufacturers to be either regenerated or to recover the platinum content of the aged catalyst.
UOP CCR PLATFORMING
Before describing the reaction chemistry of the catalytic reforming process as used in petroleum refineries, the typical naphthas used as catalytic reforming feedstocks will be discussed.
As stated earlier herein, semi-regenerative catalytic reformers are regenerated about once per 6 to 24 months. Our engineering staff has many years of fan experience, as well as a thorough knowledge of materials and stress analysis to select the correct product for each application. The hot reaction products from the third reactor are partially cooled by flowing through the heat exchanger where the feed to the first reactor is preheated and then flow through a water-cooled heat exchanger before flowing through the pressure controller PC into the gas separator.
The naphthas derived from the distillation of crude oils are referred to as “straight-run” naphthas.
It can be seen that they differ significantly in their content of paraffins, naphthenes and aromatics:. Reliable fans for catalyst regeneration process. The resulting liquid—gas mixture is preheated by flowing through a heat exchanger. There are many chemical reactions that occur in the catalytic reforming process, all of which occur in the presence of a catalyst and a high ;latforming pressure of hydrogen. Fans for this process are manufactured for lasting performance due to their purposeful design with rigid double walls, and filled with high density insulation.
Fans for these applications are critical to the process and therefore need to be extremely reliable to minimize costly downtime. Catalyst’s cycle duration is also very dependent on the quality of the feedstock. Garden City Fans are designed with quality and total cost of ownership in mind; and with service centers around the world, we remain committed to provide the parts and service our customers need to mitigate downtime.
Our high temperature experts can advise you on modifying your present equipment for new applications or temperatures; in addition we can design new equipment for your changing operation. At the same time, the amount of reheat required between the reactors becomes smaller. The sensitivity of catalytic reforming to contamination by sulfur and nitrogen requires hydrotreating the naphtha before it enters the reformer, adding to the cost and complexity platformnig the process.
Petroleum Refining Technology and Economics 2nd ed.
This is driving the emergence of new technologies to process naphtha into gasoline by companies like Chevron Phillips Chemical Aromax  and NGT Synthesis Methaforming . Catalytic reforming requires a whole range of other processing units at platforminb refinery apart from the distillation tower, a naphtha hydrotreater, usually an isomerization unit to process light naphtha, an aromatics extraction unit, etc.
From Wikipedia, the free encyclopedia.