Stamicarbon B.v. Acting Under the Name of Mt Innovation Center

Stamicarbon B.v.

Philip Morris Products S.a.

Fabio Angelini

Emma Palo

Cristiano Casale

Lucia Barbato

Vincenzo Palma

Michele Colozzi

Vincenzo Vaiano

Lucio Molinari

Luciano Di Domenico

Disclosed is a process for the concurrent production of hydrogen and sulphur from a HS-containing gas stream, with zero emissions. The method comprises the thermal oxidative cracking of HS so as to form Hand S. Preferably, the oxidation is conducted using oxygen-enriched air, preferably pure oxygen. The ratio HS/Oin the feedstock is higher than 2:1, preferably in the range of 3:1-5:1.

Zero emissions sulphur recovery process with concurrent hydrogen production

Disclosed is a method for the production of hydrogen from a HS-containing gas stream also containing ammonia, comprising subjecting both gas stream to catalytic oxidative cracking of both the HS and the NH, so as to form H, Sand N. In this method, preferably, an additional amount of oxygen is added as compared to the amount used for H2S catalytic oxidative cracking. Also, preferably, the contact time of the gas stream with the catalyst is increased. The catalyst preferably is provided as a single bed, and then preferably comprises iron and molybdenum supported by a carrier comprising aluminum. The preferred carrier is alumina. The iron and molybdenum preferably are in the form of sulfides.

[object Object]

Disclosed is a catalyst suitable for the catalytic oxidative cracking of a HS-containing gas stream, particularly in the event that the stream also contains methane and/or ammonia. The catalyst comprises iron and molybdenum supported by a carrier comprising aluminum. The carrier preferably is alumina. The iron and molybdenum preferably are in the form of sulphides. Also disclosed is a method for the production of hydrogen from a HS-containing gas stream, comprising subjecting the gas stream to catalytic oxidative cracking so as to form Hand S, using a catalyst in accordance with any one of the preceding claims.

Catalyst for a sulphur recovery process with concurrent hydrogen production, method of making thereof and the sulphur recovery process with concurrent hydrogen production using the catalyst

Disclosed is a process for the concurrent production of hydrogen and sulphur from a HS-containing gas stream, with reduced, and preferably zero, emissions. The method comprises the catalytic oxidative cracking of HS so as to form Hand S. Preferably, the oxidation is conducted using oxygen-enriched air, preferably pure oxygen. The process is conducted in a reaction chamber comprising a bifunctional catalyst material, so as to favor both the partial oxidation of HS and the dissociation thereof.

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Rome, Italy

Fabio Angelini