A process for preparation of catalyst to produce ultra-low sulfur diesel (ULSD) from high refractory sulfur feedstock. The catalyst composition comprises a modified alumina carrier, impregnated by metal of group VIB is in the range of 15-25% and metal of group VIIIB is in the range of 1-5% as oxides. The catalyst prepared in the present invention produces highly dispersed MoS2 active sites on the modified carrier. The catalyst produces ultra low sulfur diesel (ULSD) along with improved cetane, density reduction and endpoint reduction.

The present invention includes a fuel injection amount sensor for detecting an injection amount of oil, a pretreatment desulfurization agent injection amount sensor for detecting an injection amount of a pretreatment desulfurization agent, and a control panel for controlling and monitoring the injection amount of the pretreatment desulfurization agent so that the predetermined desulfurization agent is mixed with the fuel in a predetermined mixing ratio. The fuel injection amount sensor is disposed on a fuel supply line between a fuel tank and a marine engine, and the pretreatment desulfurization agent injection amount sensor is disposed between a downstream fuel supply line installed downstream of the fuel injection amount sensor and a pretreatment desulfurization agent tank.

The present invention includes a fuel injection amount sensor for detecting an injection amount of oil, a pretreatment desulfurization agent injection amount sensor for detecting an injection amount of a pretreatment desulfurization agent, and a control panel for controlling and monitoring the injection amount of the pretreatment desulfurization agent so that the predetermined desulfurization agent is mixed with the fuel in a predetermined mixing ratio. The fuel injection amount sensor is disposed on a fuel supply line between a fuel tank and a marine engine, and the pretreatment desulfurization agent injection amount sensor is disposed between a downstream fuel supply line installed downstream of the fuel injection amount sensor and a pretreatment desulfurization agent tank.

Methods for the thermal olefination of a methane feedstream involving the thermal cracking of the methane feedstream at selected temperatures and pressures in the absence of a catalyst, steam or added oxygen. The methane feedstream contains greater than 85 wt % methane, and the thermal cracking produces an effluent stream containing greater than 20 wt % ethylene. Thermal cracking is optionally performed at less than 1,100° C., and in some embodiments at 850-900° C. The methane feedstream optionally contains greater than 95 wt % methane and produces an effluent stream containing greater than 30 wt % olefins. Methane in the effluent stream may be recycled to the methane feedstream.

Methods for the thermal olefination of a methane feedstream involving the thermal cracking of the methane feedstream at selected temperatures and pressures in the absence of a catalyst, steam or added oxygen. The methane feedstream contains greater than 85 wt % methane, and the thermal cracking produces an effluent stream containing greater than 20 wt % ethylene. Thermal cracking is optionally performed at less than 1,100° C., and in some embodiments at 850-900° C. The methane feedstream optionally contains greater than 95 wt % methane and produces an effluent stream containing greater than 30 wt % olefins. Methane in the effluent stream may be recycled to the methane feedstream.

Catalyst structures and corresponding methods are described for the desulfurization of sulfur-containing light oil or model compounds under a specified gas atmosphere. The sulfur-containing feedstock is effectively converted while producing valuable hydrocarbon products such as BTX and carbon disulfide, as well as utilizing methane or natural gas resources, providing an economical and environmental innovation in the petroleum industry.

Catalyst structures and corresponding methods are described for the desulfurization of sulfur-containing light oil or model compounds under a specified gas atmosphere. The sulfur-containing feedstock is effectively converted while producing valuable hydrocarbon products such as BTX and carbon disulfide, as well as utilizing methane or natural gas resources, providing an economical and environmental innovation in the petroleum industry.

Aromatic compounds are prepared from a feed stream comprising biomass or a mixture of biomass and synthetic polymer in a process, comprising: a) subjecting the feed stream to a pyrolysis treatment in the presence of a cracking catalyst to yield a vaporous fraction comprising hydrocarbons with olefinic unsaturation and oxygen containing organic compounds and coke-laden cracking catalyst; b) separating the vaporous fraction from the coke-laden cracking catalyst; c) contacting the vaporous fraction with a second, aromatization catalyst in a conversion treatment to yield a conversion product comprising aromatic compounds; and d) recovering aromatic compounds from the conversion product, wherein the cracking catalyst is a naturally occurring material, selected from the group consisting of inorganic salts, refractory oxides, minerals, industrial rock and mixtures thereof.

Aromatic compounds are prepared from a feed stream comprising biomass or a mixture of biomass and synthetic polymer in a process, comprising: a) subjecting the feed stream to a pyrolysis treatment in the presence of a cracking catalyst to yield a vaporous fraction comprising hydrocarbons with olefinic unsaturation and oxygen containing organic compounds and coke-laden cracking catalyst; b) separating the vaporous fraction from the coke-laden cracking catalyst; c) contacting the vaporous fraction with a second, aromatization catalyst in a conversion treatment to yield a conversion product comprising aromatic compounds; and d) recovering aromatic compounds from the conversion product, wherein the cracking catalyst is a naturally occurring material, selected from the group consisting of inorganic salts, refractory oxides, minerals, industrial rock and mixtures thereof.

Processes and systems for producing raw materials and for producing truly circular polymers. The systems and processes may include processing a waste-derived hydrocarbon stream, such as a waste plastic pyrolysis oil, in a first reactor system with a catalyst mixture, and processing a fossil-based feedstock in a second reactor system with the catalyst mixture. The catalyst mixture may be supplied to each of the first and second reactor systems from a common catalyst regenerator. An effluent comprising fossil-based hydrocarbon products may be recovered from the second reactor system, and an effluent comprising waste-derived hydrocarbon products may be recovered from the first reactor system. Following separations, spent catalyst from each of the first and second reactor systems may be returned to the common catalyst regenerator.