Exxonmobil Chemical Patents Inc.

James L Kendall

David B Spicer

Thomas T Hirst

Steven M Slack

You Fang

Jennifer L Bancroft

Russell D Sellen

William R White

An exhaust steam stream having an absolute pressure from 200 kPa to 1,050 kPa and shaft power are produced from an extraction turbine and/or a back-pressure turbine. The exhaust steam stream can be supplied to an amine regenerator of an amine COseparation process. The shaft power can be utilized to drive equipment in a hydrocarbon processing plant such as an olefins production plant.

Amine COseparation process integrated with hydrocarbons processing

An H-rich fuel gas production plant comprising a syngas production unit can be advantageously integrated with an olefins production plant comprising a steam cracker in at least one of the following: (i) fuel gas supply and consumption; (ii) feed supply and consumption; and (iii) steam supply and consumption, to achieve considerable savings in capital and operational costs, enhanced energy efficiency, and reduced COemissions, compared to operating the plants separately.

Integration of hydrogen-rich fuel-gas production with olefins production plant

An H-rich fuel gas stream can be advantageously produced by reforming a hydrocarbon/steam mixture in to produce a reformed stream, followed by cooling the reformed stream in a waste-heat recovery unit to produce a high-pressure steam stream, shifting the cooled reformed stream a first shifted stream, cooling the first shifted stream, shifting the cooled first shifted stream to produce a second shifted stream, cooling the second shifted stream, abating water from the cooled second shifted stream to obtain a crude gas mixture stream comprising Hand CO, and recovering a COstream from the crude gas mixture stream. The H-rich stream can be advantageously combusted to provide thermal energy needed for residential, office, and/or industrial applications including in the H-rich fuel gas production process. The H-rich fuel gas production process can be advantageously integrated with an olefins production plant comprising a steam cracker.

Production of hydrogen-rich fuel-gas with reduced COemission

A method and system are disclosed for managing hydrate formation in a process that converts a hydrocarbon stream into Cunsaturates, such as ethylene and/or acetylenes. The method includes adding a hydrate inhibitor to a hydrocarbon stream to lower the hydrate formation point of the mixture stream from an initial hydrate formation point (H) of the hydrocarbon stream to a depressed hydrate formation point (H) of the mixture stream. Then, the mixture stream is depressurized to adiabatically cool the stream to a temperature (T), wherein the H&#x3c;T&#x3c;H. Then, at least a portion of the mixture stream is vaporized and the vaporized portion of the mixture stream is separated from the unvaporized portion of the mixture stream. Once separated, at least a portion of the vaporized portion is converted into product, such as ethylene and/or acetylene.

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Humble, TX, United States of America

James L Kendall