Abstract: Process for grinding heterogeneous matrices comprising fragile materials and plastic materials, comprising the steps of: (i) introducing in a mill or similar device a heterogeneous matrix comprising plastic materials and fragile materials of variable dimension; (ii) applying, by suitable moving actuator means, kinetic energy to said heterogeneous matrix, by projecting the materials of the matrix at high speed against suitable fixed stop means provided on said mill; (ill) proceeding to grinding under the effect of impacts occurring between the material projected by the actuator means and the material accumulated on said stop means; (iv) discharging the portion of processed material reduced under a prefixed maximum diameter, characterized in that said stop means are configured so that they can hold removably the material projected against the same in an outer region with respect to the volume interested by the movement of said actuator means.

Abstract: A steam generator comprising water/steam tubes passing through the steam generator from the water inlet to the superheated steam outlet, horizontally arranged in tube banks, preferably flat tube banks, perpendicularly crossed by the fumes, the tubes ascend along the steam generator axis from one tube bank the other, with an oblique path so to expose the tube to the fume flow in different positions at each tube bank, the tubes are divided into two or more separate branches, each branch fed by a header distinct from the others, the steam generator being once-through in pure counter-current, vertical or horizontal, the headers of the outlet superheated steam are grouped at direct contact in a bundle, and they are thermally insulated from the outside.

Abstract: Oxycombustion process wherein a combustor is fed with a fuel, a comburent and compounds under the form of coherent aggregates having Young modulus ?104 MPa, the combustor being isothermal and flameless.

Abstract: A combustion process wherein a fuel, a comburent and a component B), sulphur or sulphur containing compounds, are fed to the combuster in an amount to have a molar ratio B?/AI?0.5, wherein: B? is the sum by moles between the amount of sulphur present in component B)+the amount of sulphur (component BII)) contained in the fuel, AI is the sum by moles between the amount of alkaline and/or alkaline-earth metals (component AII)) contained in the fuel+the amount of the alkaline and/or alkaline earth metals (component A)) in the form of salts and/or oxides contained in component B), being the combustor isothermal and flameless.

Abstract: Oxycombustion process wherein low ranking, gaseous, liquid, solid, optionally solid melting hydrocarbon fractions are used as fuels, having a vanadium content in an amount by weight from 50 to 5,000 ppm or higher, for producing energy, wherein magnesium is added as oxide, or as a water-soluble salt, the combustor being refractored and isotherm or quasi isotherm, flameless, working at temperatures comprised between 1,250° C. and 1,450° C. and under pressurized conditions, wherein the oxidant is oxygen, the oxidant being used in admixture with water or steam such that the ratio by moles oxidant:(water-steam) is comprised between about 1:0.4 and about 1:3 or the oxidant is used in admixture with flue gases recycled from the flue gases outletting the energy recovery equipments, wherein the water amount is higher than 30% by volume, optionally by adding water, the molar ratio oxidant:(water/steam) in flue gases being comprised from about 1:0.

Abstract: Oxycombustion process for producing energy wherein low ranking gaseous, liquid, solid, optionally solid melting hydrocarbon fractions are used as fuels, having a vanadium content in amounts by weight from 50 to 5,000 ppm or higher, and alkaline metals Ma in amounts from 20 to 10,000 ppm, wherein magnesium is added as oxide, or as a magnesium compound forming MgO in the combustion process, or mixtures thereof and a silico-aluminate wherein the molar ratio SiO2:Al2O3 ranges from 2:1 to 6:1; the combustor being refractored, isotherm or quasi-isotherm, flameless, working at temperatures in the range 1,250°-1,450° C. and under pressurized conditions, wherein the oxidant being used in admixture with water or steam, the ratio by moles oxidant:(water/steam) being comprised between about 1:0.

Abstract: A combustion process wherein a fuel, a comburent and component A) are fed to a combustor, component A), comprising low-melting salts and/or oxides having a melting temperature ?1,450 K, the ratio by moles A?/(A??A?)?0.01, being: A? the sum by moles between the amount of metals, under the form of low-melting salts and/or low-melting oxides present in the component A) and the amount of metals under the form of the low-melting salts and/or low-melting oxides or their low-melting mixtures, contained in the fuel, A? is the sum of the amount of all the metals contained in the fuel and of those contained in component A), in which the combustor is isothermal type and flameless.

Abstract: A plant for the treatment of materials, in particular waste materials and refuse, comprises a combustion reactor to which the material to be treated can be supplied. The combustion reactor has an input for a combustion supporter comprising oxygen and an output for the gases that are produced during the combustion of the materials inside the reactor and, in use, is substantially isothermic or quasi-isothermic at high or very high temperature, and without substantial oxygen deficit, in all of its parts. A portion of the combustion gases is recirculated and mixed with the combustion supporter to bring about a high degree of opacification thereof, which is increased by increasing the total pressure of the combustion chamber. The substances which cannot be gasified inside the reactor are immediately fused. The parameters of the gases at the output from the reactor are constantly measured by sensors with response-time characteristics of about 2 seconds.

Abstract: A combustion process wherein a comburent, a fuel and the following components are fed: i) component B) sulphur or compounds containing sulphur in an amount to have a molar ration B1/C1?0.

Abstract: A process for combusting solid liquid or gaseous fuels in a high temperature refractory-lined reactor with the aim of generating electric power comprises mixing at least one fuel with steam. The refactory material of the reactor and the opaque gases of the reaction environment bring about high power infrared radiation which substantially instantaneously preheats the reactants on input including said reactants being intrinsically transparent to infrared radiation (N2/O2) but rendered opaque and thus absorbers of energy from infrared radiation thanks to dilution with steam. A high efficiency combustor is provided for carrying out the above-stated process.

Abstract: A steam generator comprising: water/steam tubes passing through the steam generator from the water inlet (62, 63, 64) to the superheated steam outlet (68, 69, 610), horizontally arranged in tube banks, preferably flat tube banks, perpendicularly crossed by the fumes (61), the tubes ascend along the steam generator axis from one tube bank to the other, with an oblique path so to expose the tube to the fume flow (61) in different positions at each tube bank, the tubes are divided into two or more separate branches (65, 66, 67), each branch fed by a header distinct from the others, the steam generator being once-through in pure countercurrent, vertical or horizontal, the headers (61, 69, 610) of the outlet superheated steam are grouped at direct contact in a bundle, and they are thermally insulated from the outside.

Abstract: A process for the removal of heavy metals from flue gas deriving from combustion processes comprising the following steps: a) optional removal by filtration of solid particles or of particulate of heavy metals or their compounds, having an average diameter higher than 10 micron; b) flue gas washing performed with an aqueous phase and transfer of the heavy metals or their compounds to the aqueous phase; c) flue gas cooling and partial condensation of the steam contained in the flue gas and separation of a condensed phase; d) discharge of the flue gases substantially free from heavy metals or their compounds into the environment; f) discharge of the aqueous phase substantially free from heavy metals or their compounds into the environment.

Abstract: A combustion process wherein a fuel, a comburent and a component B), sulphur or sulphur containing compounds, are fed to the combuster in an amount to have a molar ratio B ‘/AI?0.5, wherein: B’ is the sum by moles between the amount of sulphur present in component B)+the amount of sulphur (component BII)) contained in the fuel, AI is the sum by moles between the amount of alkaline and/or alkaline-earth metals (component AII)) contained in the fuel+the amount of the alkaline and/or alkaline earth metals (component A)) in the form of salts and/or oxides contained in component B), being the combustor isothermal and flameless.

Abstract: A combustion process wherein a comburent, a fuel and the following components are fed: i) component B) sulphur or compounds containing sulphur in an amount to have a molar ration B1/C1?0.

Abstract: A process for the removal of heavy metals from flue gas deriving from combustion processes comprising the following steps: a) optional removal by filtration of solid particles or of particulate of heavy metals or their compounds, having an average diameter higher than 10 micron; b) flue gas washing performed with an aqueous phase and transfer of the heavy metals or their compounds to the aqueous phase; c) flue gas cooling and partial condensation of the steam contained in the flue gas and separation of a condensed phase; d) discharge of the flue gases substantially free from heavy metals or their compounds into the environment; f) discharge of the aqueous phase substantially free from heavy metals or their compounds into the environment.

Abstract: A process for combusting solid liquid or gaseous fuels in a high temperature refractory-lined reactor with the aim of generating electric power comprises mixing at least one fuel with steam. The refactory material of the reactor and the opaque gases of the reaction environment bring about high power infrared radiation which substantially instantaneously preheats the reactants on input including said reactants being intrinsically transparent to infrared radiation (N2/O2) but rendered opaque and thus absorbers of energy from infrared radiation thanks to dilution with steam. A high efficiency combustor is provided for carrying out the above-stated process.