Abstract:
The present disclosure relates generally processes and systems for converting a mixture of light hydrocarbons to liquid transportation fuels by first cracking the light hydrocarbons to an intermediate comprising olefins, which is converted by contacting with a catalyst comprising at least one zeolite in two separate conversion stages with an intervening recovery of liquid product. The first stage conversion favors oligomerization of larger olefins to form diesel range products that are collected prior to directing unconverted smaller olefins to be oligomerized in a second stage conversion conducted at a higher temperature and lower pressure.
Abstract:
The present invention relates to processes for converting a feedstream comprising predominantly light alcohols into liquid transportation fuels in the gasoline boiling range. In certain embodiments, the feedstream is a bio-waste stream derived from the conversion of sorbitol or glycerol to propanediol.
Abstract:
System relating to the conversion of ethanol in a stripper unit of a fluidized catalytic cracking system. An ethanol stream comprising at least 4 volume percent water mixes with a catalyst in the stripper unit under conditions of temperature that favor conversion of the ethanol to hydrocarbons, thereby increasing incorporation of ethanol into liquid transportation fuels without exceeding regulatory limits on fuel vapor pressure. Certain embodiments additionally combine the ethanol stream with a hydrocarbon stream in the stripper and react in the presence of a catalyst to produce hydrocarbons that may have an increased boiling point, increased octane rating, decreased vapor pressure, decreased benzene content, or combinations of these properties.
Abstract:
Processes relating to the conversion of ethanol in a stripper unit of a fluidized catalytic cracking system. An ethanol stream mixes with a catalyst in the stripper unit under conditions of temperature that favor conversion of the ethanol to hydrocarbons, thereby increasing incorporation of ethanol into liquid transportation fuels without exceeding regulatory limits on fuel vapor pressure. Certain embodiments combine the ethanol stream with a hydrocarbon stream and react in the presence of a catalyst in a stripper to produce hydrocarbons that may have an increased boiling point, increased octane rating, decreased vapor pressure, decreased benzene content, or combinations thereof.
Abstract:
The present disclosure relates generally processes and systems for converting a mixture of light hydrocarbons to liquid transportation fuels by first cracking the light hydrocarbons to an intermediate comprising olefins, which is converted by contacting with a catalyst comprising at least one zeolite in two separate conversion stages with an intervening recovery of liquid product. The first stage conversion favors oligomerization of larger olefins to form diesel range products that are collected prior to directing unconverted smaller olefins to be oligomerized in a second stage conversion conducted at a higher temperature and lower pressure.
Abstract:
Systems relating to the conversion of ethanol in a stripper unit of a fluidized catalytic cracking system. An ethanol stream mixes with a catalyst in the stripper unit under conditions of temperature that favor conversion of the ethanol to hydrocarbons, thereby increasing incorporation of ethanol into liquid transportation fuels without exceeding regulatory limits on fuel vapor pressure. Certain embodiments combine the ethanol stream with a hydrocarbon stream and react in the presence of a catalyst in the stripper to produce hydrocarbons that may have an increased boiling point, increased octane rating, decreased vapor pressure, decreased benzene content, or combinations thereof.
Abstract:
Biomass derived gas oil is blended with petroleum derived gas oil and upgrading into more salable and more valuable products by co-processing the blended material in a gas oil hydrocracking system comprising two reactors where the blended material is first hydrotreated and then hydrocracked.
Abstract:
Processes relating to the conversion of ethanol in a stripper unit of a fluidized catalytic cracking system. An ethanol stream comprising at least 4 volume percent water mixes with a catalyst in the stripper unit under conditions of temperature that favor conversion of the ethanol to hydrocarbons, thereby increasing incorporation of ethanol into liquid transportation fuels without exceeding regulatory limits on fuel vapor pressure. Certain embodiments additionally combine the ethanol stream with a hydrocarbon stream in the stripper and react in the presence of a catalyst to produce hydrocarbons that may have an increased boiling point, increased octane rating, decreased vapor pressure, decreased benzene content, or combinations of these properties.
Abstract:
Processes relating to a one-step conversion to directly produce propylene from glycerol with a hydrotreating catalyst under a constrained hydrogen/glycerol feed ratio.
Abstract:
A method of hydrotreating liquefied biomass feedstock with diesel feedstock to produce alkanes is demonstrated that prevents damage to the reactor catalyst, reduces coke production, and converts nearly all of the polyols to alkanes. In order to mitigate the potential coking issue and to moderate the temperature of the catalyst bed while maintaining high conversion for sugar alcohol to hydrocarbon via a hydrotreating process, a diesel feedstock is fed over the reactor catalyst with multiple injections of polyol feedstock along the reactor.