Method and device for desulphurization of recycle hydrogen

Abstract

The invention relates to a method and a device for the desulphurization of recycle hydrogen. The invention provides a method for the desulphurization of the recycle hydrogen, which comprises the following steps: conveying the recycle hydrogen mixture into a high-pressure separator of an internal cyclone separator to remove liquid and solid particles carried by the mixture; and delivering the recycle hydrogen mixture from which the liquid and the solid particles are removed into a desulfurizer to remove sulfur carried by the mixture, wherein the high-pressure separator and the desulfurizer are transversely arranged or longitudinally and coaxially overlapped. The invention also provides a device for the desulphurization of the recycle hydrogen.

Description

technical field

[0001] The invention belongs to the field of chemical environmental protection treatment and relates to a compact cycle hydrogen desulfurization method. Specifically, the present invention adopts the method of directly connecting the gas phase outlet of the cyclone enhanced high-pressure separator with the gas phase inlet of the circulating hydrogen desulfurization tower, which not only cancels the dehydration and dehydrogenation equipment at the circulating hydrogen desulfurization tower inlet in the original circulating hydrogen desulfurization process , which reduces the investment cost and energy consumption of the desulfurization process equipment, and eliminates the temperature drop caused by the dehydration at the inlet of the original circulating hydrogen desulfurization tower and the pipeline between the gas phase outlet of the dehydrogenation equipment and the inlet of the circulating hydrogen desulfurization tower. The induced foaming of the desulfur...

Examples

Embodiment 1

[0058] Example 1: 2.2 million tons / year hydrocracking treatment unit

[0059] In a hydrocracking treatment unit with an annual processing capacity of 2.2 million tons / year, a set such as figure 1 The cyclone-enhanced high-pressure separator shown is directly connected to the circulating hydrogen desulfurization tower, and its specific operation process and effect are described as follows:

[0060] When the hydrogenation process is started, the circulating hydrogen from the hydrogenation reactor contains a multi-phase and multi-component mixture such as oil, water, hydrogen sulfide, and solid particles. In the process of recycling hydrogen, desulfurization treatment must be carried out; the circulating hydrogen mixture After exiting the hydrogenation reactor, it enters the high-pressure separator from the inlet of the cyclone-enhanced high-pressure separator, and performs dehydration and dehydrocarbon treatment in the cyclone-enhanced high-pressure separator. The large liquid...

technical field

[0001] The invention belongs to the field of chemical environmental protection treatment and relates to a compact cycle hydrogen desulfurization method. Specifically, the present invention adopts the method of directly connecting the gas phase outlet of the cyclone enhanced high-pressure separator with the gas phase inlet of the circulating hydrogen desulfurization tower, which not only cancels the dehydration and dehydrogenation equipment at the circulating hydrogen desulfurization tower inlet in the original circulating hydrogen desulfurization process , which reduces the investment cost and energy consumption of the desulfurization process equipment, and eliminates the temperature drop caused by the dehydration at the inlet of the original circulating hydrogen desulfurization tower and the pipeline between the gas phase outlet of the dehydrogenation equipment and the inlet of the circulating hydrogen desulfurization tower. The induced foaming of the desulfur...

Examples

Embodiment 1

[0058] Example 1: 2.2 million tons / year hydrocracking treatment unit

[0059] In a hydrocracking treatment unit with an annual processing capacity of 2.2 million tons / year, a set such as figure 1 The cyclone-enhanced high-pressure separator shown is directly connected to the circulating hydrogen desulfurization tower, and its specific operation process and effect are described as follows:

[0060] When the hydrogenation process is started, the circulating hydrogen from the hydrogenation reactor contains a multi-phase and multi-component mixture such as oil, water, hydrogen sulfide, and solid particles. In the process of recycling hydrogen, desulfurization treatment must be carried out; the circulating hydrogen mixture After exiting the hydrogenation reactor, it enters the high-pressure separator from the inlet of the cyclone-enhanced high-pressure separator, and performs dehydration and dehydrocarbon treatment in the cyclone-enhanced high-pressure separator. The large liquid...

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