Abstract:
In a process for producing a low color diesel and/or kerosene fuel, a middle distillate feed can be supplied to a reactor having at least one first catalyst bed containing a first desulfurization and/or isomerization catalyst and at least one second catalyst bed containing a decolorization catalyst downstream from the first catalyst bed(s). The feed can be reacted with the hydrogen in the presence of the first catalyst at a temperature from about 290°C to about 430°C to produce a first liquid effluent, which can be cooled by about 10°C to about 40°C with a quench medium and cascaded to the at least one second catalyst bed. The cooled first liquid effluent can then be reacted with hydrogen in the presence of the decolorization catalyst at a temperature from about 280°C to about 415°C to produce a second effluent having an ASTM color less than 2.5.
Abstract:
A system and method for producing fuels and lubricant basestocks from gas oil boiling range feeds is provided. Desulfurization and conversion stages are used to form fuel and lubricant products. The product from a desulfurization stage can be fractionated, and a portion of the fractionated bottoms can be used as an input feed for a conversion or hydrocracking stage. The configuration can advantageously allow for reduced amounts of catalyst in the conversion stage.
Abstract:
The present invention relates to processes for increasing smoke point of a fuel. The process can be carried out using an upgrading catalyst that contains at least one noble metal supported on an inorganic, porous crystalline phase material. The catalyst is particularly effective in increasing smoke point, while minimizing reduction in total aromatics content, particularly naphthalene content.
Abstract:
Distillate feeds are hydroprocessed to produce a product having a low content of polyaromatic hydrocarbons (PAHs). The hydroprocessing includes dewaxing and aromatic saturation of the feed. The temperature of the aromatic saturation process can be controlled to make a distillate product having a desired aromatic content, such as less the 0.02 wt% of polyaromatic hydrocarbons having three or more aromatic rings.
Abstract:
A divided wall column allows for fractionation of multiple streams while maintaining separate product qualities. Effluents from multiple stages of a reaction system can be processed in a single divided wall column. The divided wall column can produce multiple cuts from each separated area, as well as at least one output from a common area.
Abstract:
This invention relates to a catalyst and process for selectively hydrodesulfurizing naphtha feedstreams using a catalyst comprising at least one hydrodesulfurizing metal supported on a low acidity, ordered mesoporous support material.
Abstract:
The instant invention relates to a process for producing low sulfur diesel products through the hydrotreating of diesel boiling range feedstreams in the presence of a bulk metal hydrotreating catalyst comprising Nb, at least one metal selected from Group VIB metals and at least one metal selected from Group VIII metals.
Abstract:
The instant invention relates to a catalyst system and its use in the production of high octane, low sulfur naphtha products through skeletal isomerization of feed olefins and hydrotreating with the optional removal of basic nitrogen-containing compounds.
Abstract:
This invention relates to a process involving hydrocracking and dewaxing of a feedstream in which a converted fraction can correspond to a majority of the product from the reaction system, while an unconverted fraction can exhibit improved properties. In this hydrocracking process, it can be advantageous for the yield of unconverted fraction for gasoline fuel application to be controlled to maintain desirable cold flow properties for the unconverted fraction. Catalysts and conditions can be chosen to assist in attaining, or to optimize, desirable product yields and/or properties.
Abstract:
Distillate feeds are hydroprocessed to produce a product having a low content of polyaromatic hydrocarbons (PAHs). The hydroprocessing includes dewaxing and aromatic saturation of the feed. The temperature of the aromatic saturation process can be controlled to make a distillate product having a desired aromatic content, such as less the 0.02 wt% of polyaromatic hydrocarbons having three or more aromatic rings.