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REACTOR TEMPERATURE OPTIMIZATION OF THE LIGHT NAPHTHA ISOMERIZATION UNIT
Vuković Ana
; INA Industrija nafte d.d., Sektor Rafinerija nafte Sisak, Proizvodna izvrsnost, Sisak, Hrvatska
Sažetak
Isomerate, the product of an Isomerization unit, is a high octane number gasoline blending component characterized by low (or none at all) aromatic and sulfur content which also satisfies both economic and ecological demands. Quality of the isomerate is affected by a number of parameters, such as feed composition, process parameters, process engineer attention to daily operation, etc. Some process parameters are set by the design basis or production planning while some others, like reactor temperatures, are optimized by a process engineer. During the optimization, reactor outlet temperatures are adjusted in the lead and lag reactors to maximize the reaction rate in the lead reactor and to manipulate the equilibrium concentrations in the lag reactor. This combination will maximize desired component product ratio, the so-called iso-ratio. The optimum can be chosen out of two options: to produce maximum isomerate barrels (maximum liquid yield) or to produce maximum product octane number. This paper deals with reactor temperature optimization background and results. The optimum inlet start-of-run temperature for the lead reactor was set to 117 °C and for the lag reactor around 120 °C.
Ključne riječi
isomerization; octane number; temperature optimization; reaction rate; iso-ratio
Hrčak ID:
110641
URI
Datum izdavanja:
7.10.2013.
Posjeta: 7.765 *