Forming asphalt fractions from three-product deasphalting

    公开(公告)号:US10655077B2

    公开(公告)日:2020-05-19

    申请号:US16031288

    申请日:2018-07-10

    Abstract: Systems and methods are provided for using a three-product deasphalter to produce advantageous combinations of deasphalted oil, resin, and rock. The desaphalted oil, resin, and rock can then be further combined, optionally with other vacuum gas oil fractions produced during the distillation that generated the feed to the three-product deasphalter, to produce a product slate of improved quality while also maintaining the quality of the resulting asphalt product and reducing or minimizing the amount of lower value products generated. The additional “resin” product from the three product deasphalter can be generated by sequential deasphalting, by using a resin settler to separate resin from the deasphalted oil, or by any other convenient method.

    FLUIDIZED COKING WITH OXYGEN-CONTAINING STRIPPING GAS

    公开(公告)号:US20200148960A1

    公开(公告)日:2020-05-14

    申请号:US16185054

    申请日:2018-11-09

    Abstract: Systems and methods are provided for using an oxygen-containing gas as at least part of the stripping gas for the stripping zone or section in a fluidized coker. By using an oxygen-containing gas as the stripping gas, heat can be added to the stripping zone selectively based on combustion of coke and/or hydrocarbons with the oxygen in the stripping gas. This can allow the temperature of the stripping zone to be increased relative to the temperature of the coking zone of a fluidized coking system. The flow of oxygen can be controlled to achieve a desirable temperature in the stripper while the reactor temperature is independently set by preheating of the feed and/or hot coke circulation to the reaction zone.

    ADVANCED PROCESS CONTROL SCHEME FOR DIVIDING WALL COLUMN AND DUAL-DIVIDING WALL COLUMN WITH MULTIPLE PRODUCTS

    公开(公告)号:US20200087229A1

    公开(公告)日:2020-03-19

    申请号:US16545172

    申请日:2019-08-20

    Abstract: Systems and methods are provided for improving process control of separation systems that include one or more dividing walls within a single column. It has been discovered that improved process control can be achieved by controlling the dividing wall columns based on energy balance instead of mass balance. The energy balancing can be performed in part based on controlling temperature at a plurality of locations on the feed side within a first divided portion of the column. Using energy balancing based on temperature control at a plurality of locations on the feed side can facilitate maintaining the operation of the dividing wall columns within a single region of phase space that can be suitably approximated by linear models. This can allow conventional process controllers to manage the manipulated and controlled variables. In addition to controlling the temperature at a plurality of locations on the feed side, a plurality of other characteristics can be used as manipulated or controlled variables. Optionally, a multivariable controller can be used to provide further improved control of the column.

    WASTE UPGRADING AND RELATED SYSTEMS
    98.
    发明申请

    公开(公告)号:US20200063038A1

    公开(公告)日:2020-02-27

    申请号:US16535251

    申请日:2019-08-08

    Abstract: A method upgrading waste to produce fuel can include: introducing a hydrocarbon feed stream into a 450° C. to 1050° C. coking zone of a reactor containing a fluidized bed of coke particles maintained at coking temperatures to produce a vapor phase hydrocarbon product while coke is deposited on the coke particles; allowing the coke particles to pass downwards to a stripper section of the reactor; introducing a steam stream into the stripper section; transferring the coke particles from the stripper section to a gasifier/burner; contacting the coke particles in the gasifier/burner an oxygen-containing gas in an oxygen-limited atmosphere at 850° C. to 1200° C. to heat the coke particles and form a fuel gas product that comprises carbon monoxide and hydrogen; recycling the heated coke particles from the gasifier/burner to the coking zone of the reactor; and introducing at least one waste stream to the reactor and/or the gasifier/burner.

    ADVANCED STEAM CRACKING
    100.
    发明申请

    公开(公告)号:US20200047142A1

    公开(公告)日:2020-02-13

    申请号:US16453339

    申请日:2019-06-26

    Abstract: A process and system that use the heat produced in the generation of Syngas to provide heat to an endothermic reaction zone are disclosed. A method for providing heat to an endothermic reaction may comprise producing Syngas in a reforming reactor. The method may further comprise recovering heat from the producing the Syngas to heat an endothermic reaction stream in a heat transfer zone. The method may further comprise allowing reactants in the endothermic reaction stream to react to form an endothermic reaction product stream. The method may further comprise withdrawing the endothermic reaction product stream from the heat transfer zone.

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