Process for the production of hydrocarbons with low sulfur and mercaptan content
First Claim
1. Desulfurization process for a cut containing hydrocarbons comprising sulfur and olefinic compounds and having at least the following successive steps:
- a first desulfurization in the presence of hydrogen and a hydrodesulfurization catalyst under conditions leading to a desulfurization rate of said cut strictly higher than 90%, separation of most of the hydrogen sulfide (H2S) from the effluents resulting from the first desulfurization, a second desulfurization of the effluents, with the hydrogen sulfide removed, resulting from the separation step, in the presence of hydrogen and of a hydrodesulfurization catalyst and under conditions leading to a desulfurization rate of said effluents less than that of the first desulfurization.
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Accused Products
Abstract
Process for desulfurization of a cut containing hydrocarbons comprising sulfur compounds and olefinic compounds comprising at least the following successive steps: a first desulfurization in the presence of hydrogen and a hydrodesulfurization catalyst under conditions leading to a desulfurization rate of said cut strictly higher than 90%; separation of most of the hydrogen sulfide from the effluents resulting from the first desulfurization; a second desulfurization of the effluents, with the hydrogen sulfide removed, resulting from the separation step, in the presence of hydrogen and a hydrodesulfurization catalyst, and under conditions leading to a desulfurization rate of said effluents less than that of the first desulfurization.
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Citations
12 Claims
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1. Desulfurization process for a cut containing hydrocarbons comprising sulfur and olefinic compounds and having at least the following successive steps:
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a first desulfurization in the presence of hydrogen and a hydrodesulfurization catalyst under conditions leading to a desulfurization rate of said cut strictly higher than 90%, separation of most of the hydrogen sulfide (H2S) from the effluents resulting from the first desulfurization, a second desulfurization of the effluents, with the hydrogen sulfide removed, resulting from the separation step, in the presence of hydrogen and of a hydrodesulfurization catalyst and under conditions leading to a desulfurization rate of said effluents less than that of the first desulfurization. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification