摘要:
A product is described for the prevention and/or treatment of grapevine infections, obtained by the partial or total neutralization of lees originating from winemaking processes, for example by means of alkali or alkali-earth metal oxides or hydroxides; such product generally has a pH comprised between 6.0 and 8.0 and a humidity content of 70% or less; a composition for the prevention and/or treatment of grapevine infections, comprising such product and a process for the preparation of the above-mentioned product, comprising the addition of lees originating from a winemaking process, having a pH generally of 3.0 or less, a basic reactant to bring its pH to a value of 6.0 or above and an optional concentration step to bring the humidity content of the product to a value of 70% or less, are also described.
摘要:
A method of producing elastomers or elastomeric mixtures, in which independent flows of N.sub.2, of a solution of elastomers in organic solvents and, possibly, of forming and nucleation additives, are processed mechanically and thermally in a turbo-drier so as to produce elastomers or elastomeric mixtures, respectively, in solvent-free, granulated form.
摘要:
Method of remediating a soil contaminated by polyhalogenated hydrocarbons, in particular PCBs, PCDDs and PCDFs, comprising the steps of removing and sieving the soil to free it of stones and gravel; possibly regulating the moisture content of the sieved soil to a value of 10-30%; subjecting the sieved soil to thermal treatment while it flows in the form of a thin, turbulent, dynamic layer in contact with a wall heated to at least 250° C.; separating the thermally treated soil from the steam generated following such treatment, the soil being substantially free of the aforementioned polyhalogenated hydrocarbons.
摘要:
A method of remediating soil that contains heavy metals comprises the steps of removing and sieving heavy metal-containing soil to separate stones and gravel, and treating the sieved soil, in a thin layer kept in a strongly turbulent state, with a solution of an alkali sulfide at a temperature of at least 50° C.
摘要:
The present invention relates to a process, and respective operating apparatus, for modifying the structure of a sludge, in particular an organic sludge originating from a purification treatment of waste water, of the civil and industrial type, to be subjected to dehydration and/or drying, wherein the sludge is exposed to the action of an electric field generated by direct current.
摘要:
A frozen condiment is described, chosen among the group consisting of sauces, pastes, pates, creams and pizza toppings, having hygienic and organoleptic features comparable with those of a corresponding fresh condiment, which is in the form of granules having a porous surface, having an average weight of 6.0 g or less and essentially homogeneous in size having a diameter comprised between 1 mm and 20 mm, and apt to determine a rapid and uniform thawing of the deep-frozen condiment; a process for the deep-freezing of a substantially fluid condiment is also described, which involves dividing a substantially fluid condiment into a plurality of drops, which, in a first deep-freezing step, are dosed within a liquid bath at a temperature lower than −150° C., obtaining a plurality of partially frozen granules having a hard and deep-frozen external surface and a soft not completely deep-frozen core, and a second deep-freezing step at a temperature comprised between −30° C. and −90° C., which leads to condiment deep-frozen granules; and subjecting the deep-frozen granules thus obtained to a refining step, wherein at least a part of said plurality of deep-frozen granules is reduced in size thus obtaining a plurality of deep-frozen granules having an average weight of 6.0 g or less, preferably between 1.0 and 5.0 g, and which are essentially homogeneous in size having a diameter comprised between 1 mm and 20 mm, preferably between 3 and 15 mm; the process is carried out within a system comprising a dosing device to dose the condiment dropwise, a first deep-freezing section downstream of the dosing device, comprising a liquid bath, at a temperature of −150° or lower, wherein the drops are fed and wherefrom a condiment in the form of partially deep-frozen granules is discharged; a second deep-freezing section, operating at a temperature comprised between −30° C. and −90° C., wherein the granule deep-freezing is completed, a refining device (5) arranged downstream of said second deep-freezing section (4), for the reduction in size of at least part of said deep-frozen granules of condiment (D) exiting said second deep-freezing section (4); and a packaging device.
摘要:
An insect-repellent and/or insecticidal product is described obtained by concentration of by-product vegetable water from olive milling, characterized in that it has a dry matter content of 10% or higher and a pH of 5 or higher; a method for the preparation of such a product is also described comprising the step of making a continuous stream of said vegetable water flow in the state of a turbulent thin layer, in contact with a heated wall of a turbo-concentrator comprising a horizontal-axis cylindrical tubular body (1), having an inlet opening (5) for said vegetable water and a final product discharge opening (7), a heating jacket (4) to bring the inner wall of said tubular body at a pre-determined temperature, and a bladed rotor (8), rotatably supported in the cylindrical body (1).
摘要:
A method for producing powder paints which comprises the steps of: a) preparing a paste comprising at least one thermosetting plastic resin, at least one curing agent, at least one pigment and water and making the paste flow in the form of a thin layer and under conditions of high turbulence in contact with a wall at a predetermined temperature; b) drying the paste by making it flow into a thin and turbulent layer in contact with a heated wall and optionally with a flow of heated gas.
摘要:
A continuous process and a system for drying solid organic substances in an aqueous phase or a mixed (water/organic solvent) phase, which includes feeding a continuous stream of such substances into a continuous drier, to obtain a continuous output stream of dried powder material and steam at a temperature in excess of 100° C. for delivery to an apparatus separating the powder material from the steam. A continuous run of the powder material and a continuous run of steam are discharged from the apparatus for recirculation to the drier, with the steam pressure inside the drier and the separating apparatus kept constant at a value to ensure that substantially no oxygen is present, or that the powder material cannot be ignited. The recirculation is carried out by continuous drawing, downstream of the separating apparatus, an amount of steam corresponding to the amount of steam generated within the drier.
摘要:
The present invention describes a process for treating phosphogypsum and in particular the related leachate that comprises the steps of feeding a continuous leachate flow with a dry content of below 5% by weight into a concentration unit heated to a predetermined temperature and equipped with dedicated mixing means, and continuously discharging a concentrated leachate flow having a dry content comprised between 20% and 95% by weight from the concentration unit.