Short-flow process for desulfurization of circulating hydrogen and device for the same

摘要

The invention relates to a short-flow process for desulfurization of circulating hydrogen and a device for the same. A short-flow process for desulfurization of circulating hydrogen is provided, comprising: (a) removing hydrocarbons from the circulating hydrogen mixture, so that the liquid drops of the heavy hydrocarbons in the dispersion phase are separated from the circulating hydrogen in the continuous phase, and a heavy hydrocarbon phase and a mixture phase of circulating hydrogen containing sulfur are obtained; (b) further separating the resultant mixture phase to remove the sulfides therein, so that circulating hydrogen without sulfur is obtained; (c) further separating the resultant circulating hydrogen without sulfur to remove the amine solution therein, so that purified circulating hydrogen is obtained. The invention also provides a device for desulfurization of circulating hydrogen.

主权项

1. A short-flow system for desulfurization of circulating hydrogen, comprising:
a heating burner that is configured for heating a raw oil; a hydrogenation reactor that is connected to the heating burner; a heat exchanger that is connected to the hydrogenation reactor; an air cooler that is connected to the heat changer; a high-pressure separator device that is directly connected to the air cooler and is configured to separate a circulating hydrogen mixture containing hydrogen sulfide and heavy hydrocarbons from a formed oil; a de-hydrocarbon device that is directly connected to an outlet of the high-pressure separator device and configured to remove condensed heavy hydrocarbons from the circulating hydrogen mixture received from the high-pressure separator device by separating liquid drops of the condensed heavy hydrocarbons in a dispersion phase from the circulating hydrogen in a continuous phase, and obtaining a condensed heavy hydrocarbon phase and a mixture phase of circulating hydrogen containing sulfur, the air cooler is upstream of the high-pressure separator and the de-hydrocarbon device is provided downstream of the high-pressure separator; a desulfurizer device that is connected to a gas phase outlet of the de-hydrocarbon device, the desulfurizer device being configured to separate the obtained mixture phase to remove sulfides therein, so that circulating hydrogen without sulfur is obtained; a de-amine unit that is disposed within the desulfurizer device, the de-amine unit being configured to separate the obtained circulating hydrogen without sulfur to remove the amine solution therein, so that purified circulating hydrogen is obtained; and a vortex separator unit that is disposed within a top part of the desulfurizer, wherein the high-pressure separator device is separate from the de-hydrocarbon device.