Eni S.p.a.

Polimeri Europa S.p.a.

Lino Carnelli

Roberta Miglio

Roberto Zennaro

Carla Lazzari

Lino Locatelli

Daniele Bianchi

Stefano Re Fiorentin

Pietro Cesti

Rossella Bortolo

Giuliana Franzosi

Gianni Pandolfi

Gabriele Carlo Ettore Clerici

Luca Panzeri

Tamara Passera

Roberto Paglino

Daniele Moscotti

Giulio Lanza

Daniele Testa

Claudio Boris Volpato

Marco Morone

The present invention relates to a system for a parabolic solar concentrator (SCA) having a substantially continuous reflective surface aiming to maximize the efficiency of the parabolic solar concentrator and of its fabrication method. The system of the present invention allows the fabrication of a low cost parabolic solar concentrator, based on a torsion bar, ribs and a plurality of reflective pieces of sheet metal preferably covered with a reflective film. The parabolic solar concentrator according to a preferred embodiment allows the reduction of surfaces shading the reflective surface. Another advantage is the lack of presence of supporting or movement elements protruding in the concave side of the parabola, not including receiver tube components and supports, thereby increasing the reflection efficiency and solar collection.

Solar concentrator having a continuous parabolic reflective surface

Photovoltaic panel (or solar panel) comprising: Said photovoltaic panel (or solar panel) may be used advantageously in various applications that require the production of electrical energy by utilizing the energy of solar radiation or radiation derived from artificial light such as, for example: architecturally integrated photovoltaic systems ('Building Integrated Photo Voltaic'&#x2014;BIPV); photovoltaic windows; greenhouses; photo-bioreactors; soundproofing barriers; lighting engineering; design; advertising; automotive industry. Moreover, said photovoltaic panel (or solar panel) may be used either in 'stand alone' conditions, or in modular systems.

Photovoltaic panels comprising luminescent solar concentrators

A process for the purification of an aqueous stream coming from the Fischer-Tropsch reaction using distillation and/or stripping treatment, a treatment with at least one inorganic base and a treatment with at least one organic base. This process allows at least a part of the aqueous stream coming from the Fischer-Tropsch reaction to be used as process water in the synthesis gas production plant, subsequently sent to the Fischer-Tropsch plant for the production of hydrocarbons.

Process for the purification of an aqueous stream coming from the fischer-tropsch reaction

Process for the purification of an aqueous stream coming from the Fischer-Tropsch reaction which comprises: feeding said aqueous stream containing the organic by products of the reaction to one or more pervaporation units, said one or more pervaporation units comprising at least one polymeric pervaporation membrane, obtaining two outgoing streams: &#x2014;an aqueous stream (i) enriched in alcohols having from 1 to 8 carbon atoms, preferably from 2 to 4 carbon atoms; &#x2014;an aqueous stream (ii) enriched in water.

The present invention concerns a mixture of inorganic nitrate salts, comprising LiNO, NaNO, KNOand CsNOwherein the LiNOcontent ranges from 17.5% by weight to 21.6% by weight, the NaNO3 content ranges from 10% by weight to 11% by weight, the KNOcontent ranges from 27.7% by weight to 32.6% by weight, the CsNOcontent ranges from 35.8% by weight to 43.8% by weight, including the interval bounds.

Mixture of inorganic nitrate salts

Process for the purification of an aqueous stream coming from the Fischer-Tropsch reaction comprising a treatment with at least one inorganic base, an evaporation treatment, a distillation and/or stripping treatment and a treatment with at least one organic base. The process allows at least a part of the aqueous stream coming from the Fischer-Tropsch reaction to be used as process water in the production plant of synthesis gas subsequently sent to a Fischer-Tropsch plant for the production of hydrocarbons.

Process for the purification of an aqueous stream coming from the Fischer-Tropsch reaction which comprises: &#x2014;feeding said aqueous stream containing the organic by-products of the reaction to a distillation column, obtaining two output streams: &#x2014;an aqueous stream (i) exiting from the column head, enriched with alcohols having from 1 to 20 carbon atoms, preferably from 1 to 9 carbon atoms, and other optional volatile compounds; an aqueous stream (ii) exiting from the column bottom, enriched with organic acids having from 1 to 10 carbon atoms, preferably from 2 to 6 carbon atoms; &#x2014;subjecting said aqueous stream (ii) to an anaerobic biological treatment obtaining a purified aqueous stream (iii); wherein said anaerobic biological treatment is carried out with a hydraulic retention time lower than 15 hours, preferably ranging from 4 hours to 10 hours, more preferably ranging from 5 hours to 8 hours.

A process for purifying an aqueous stream from a Fischer-Tropsch reaction that includes feeding the aqueous stream to a system that includes a distillation column equipped with a partial condenser and a total condenser, at least partially condensing the vaporized stream leaving the head of the distillation column and collecting a first distillate in which in heavier by-products, totally condensing the remaining portion of the vaporized stream leaving the partial condenser and collecting a liquid stream which is returned to the distillation column as a reflux and removing a purified aqueous stream from the bottom of the distillation column.

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Carbonate, Italy

Lino Carnelli