Temporary desulphurization reactor for pre-treating a hydrocarbon feed before steam reforming with a view to hydrogen production
First Claim
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1. A process for pre-treating a steam reforming feed containing sulphur-containing compounds, said process comprising:
- adsorption of said sulphur-containing compounds onto an adsorbent solid, using two desulphurization reactors;
a temporary desulphurization reactor containing an active adsorbent solid;
a permanent desulphurization reactor placed upstream of a steam reforming unit, which contains an adsorbent solid in the passivated state, necessitating a depassivation phase in order to be rendered active;
wherein said temporary desulphurization reactor is disconnected as soon as the adsorbent solid of the permanent desulphurization reactor has been activated, andwherein the volume of said temporary desulphurization reactor is in the range of 1/20 to 1/200 times the volume of said permanent desulphurization reactor.
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Abstract
The present invention describes a process for pre-treating a steam reforming feed containing sulphur-containing compounds, using two desulphurization reactors:
- a temporary desulphurization reactor (1010) containing an active adsorbent solid;
- a permanent desulphurization reactor (1003) placed upstream of the steam reforming unit, which contains an adsorbent solid in the passivated state, necessitating a depassivation phase in order to be rendered active;
the temporary desulphurization reactor (1010) being disconnected as soon as the adsorbent solid of the permanent desulphurization reactor (1003) has been activated, and the volume of the temporary desulphurization reactor being in the range 1/20 to 1/200 times the volume of the permanent desulphurization reactor.
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7 Claims
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1. A process for pre-treating a steam reforming feed containing sulphur-containing compounds, said process comprising:
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adsorption of said sulphur-containing compounds onto an adsorbent solid, using two desulphurization reactors; a temporary desulphurization reactor containing an active adsorbent solid; a permanent desulphurization reactor placed upstream of a steam reforming unit, which contains an adsorbent solid in the passivated state, necessitating a depassivation phase in order to be rendered active; wherein said temporary desulphurization reactor is disconnected as soon as the adsorbent solid of the permanent desulphurization reactor has been activated, and wherein the volume of said temporary desulphurization reactor is in the range of 1/20 to 1/200 times the volume of said permanent desulphurization reactor. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification