Abstract: Process for chemically treating scrap tyres, comprising the steps of: a) grinding the tyres and removing the inorganic material; b) melting the material from step a); c) devulcanizing the molten material from step b) according to the reaction R1 R1:[—CH2-]n-S—[—CH2-]m+H2=[—CH2-]n*[—CH2-]m*H2S where m and n indicate non-identical lengths of the macromolecules in terms of carbon atoms and the asterisk indicates the possible presence of at least one ethylene unsaturation, said reaction R1 being possibly associated with the saturation reaction R2 of said possible at least one ethylene unsaturation: R2:[—CH2-]n*+[—CH2-]m*+H 2=[—CH2-]n+[—CH2—]m d) converting the plastics from step c) into products of commercial value.

Abstract: Degradation process of mixtures of waste plastic polymeric material containing halogenated polymers comprising the steps of: a) melting said plastic material at T>200° C. and ?220° C.; b) dehalogenating the molten mixture by production of gaseous halogenidric acid from the previous step (a) at T between 300 and 410° C., preferably between 320 and 380° C.: c) degrading the dehalogenated mixture from step (b) at a temperature between 410° C. and 500° C. and with retention times >5 minutes and ? 20 minutes, wherein the reaction products mainly comprise low boiling hydrocarbons, and in lesser extent hydrogen, naphtha, gasoline, jet fuel, diesel, heavy oils, residues.

Abstract: A furnace for gas fields, refineries reforming, petrochemical plants, or hydrogen generation by gasification may include: a radiant zone; a convective zone; and a first and second series of pipes through which at least two segregated process gas flows respectively pass. A first process gas flow may enter the furnace through the convective zone and, flowing through the first series of pipes, may leave the furnace through the radiant zone, or alternatively the first process gas flow may enter the furnace through the radiant zone and, flowing through the first series of pipes, may leave the furnace through the radiant zone. At least a second process gas flow may enter the furnace through the convective zone, may pass through the second series of pipes, and may leave the furnace through the convective zone. The second of series of pipes may be made of material resistant to acid gases.

Abstract: A process for producing syngas from pre-treated recovery plastic polymers comprising: a) gasifying said recovery pre-treated polymers according to the following reaction scheme R1: [—CH2—]+H2O?CO+2H2;??R1: b) hydrogenating said pre-treated polymers to higher hydrocarbons and methane by using hydrogen produced in R1, according to the following reaction scheme R3: [—CH2—]n+H2?CnH(2n+2)??R3: wherein n is an integer of from 1 to 3, said reaction being optionally combined with oligomers and olefin formation reactions; c) steam reforming of methane according to the following reaction scheme R4: CH4+H2O?CO+3H2;??R4: and optionally d) reforming reaction of methane according to the following reaction scheme R5: CH4+CO2=2CO+2H2;??R5: said process being carried out in a plant (10), (20), (30), (40), (50) comprising a gasification section (11), (21), (31), (41), (51) and a reforming section (12), (22), (32), (42), (52) comprising a tube bundle (13), (23), (33), (43), (53) provided with a catalyst wherein,

Abstract: Described is a process of extracting metals from a wet mass which comprises: a step A of concentrating the metals in a carbonaceous solid by means of a thermochemical treatment of the wet mass, with the ancillary production of a treatment gas; a step B of thermochemical decomposition of the carbonaceous solid in an atmosphere constituted by an operating gas which contains oxygen in substoichiometric quantity to carry out the thermochemical decomposition in order to promote a combination of the metals with substances present in the carbonaceous solid to form salts and others solid compounds and to concentrate the latter in residual ashes of the carbonaceous solid at the same time providing for the formation of a combustible synthesis gas comprising hydrocarbons from the carbonaceous solid; a step C of extraction of the metals from the ashes produced.

Abstract: Described is a plant and process for biomass treatment, where the plant is configured to actuate said process which comprises: —a step A of thermochemical treatment of transformation of a biomass into a carbonaceous solid, where this transformation involves treating the biomass at a treatment temperature of between 150° C. and 300° C. and at a treatment pressure of between 10 atm and 50 atm for 0.5-8 hours, in the presence of water, with accessory production of a treatment gas; —a step B of mixing the treatment gas with an auxiliary gas, to obtain operating gas; —a step C of thermochemical decomposition of the carbonaceous solid in an atmosphere consisting of the operating gas, where the thermochemical decomposition is suitable to obtain a combustible synthesis gas.

Abstract: Plant for the conversion of biogas into a chemical product with a high added value, selected among methanol, dimethyl ether, formaldehyde, acetic acid by a process comprising the following steps: a) reforming by converting methane and carbon dioxide contained in the biogas into syngas, b) synthesis of methanol by using syngas from step a), b?) synthesis of one of the aforesaid chemical products: formaldehyde, dimethyl ether or acetic acid by using methanol from step b) c) optional purification and separation of said chemical product, characterized in that the reaction section in which the steps b) and b?) are carried out or a part of it is replaceable with a further and different whole section or section part, in order to obtain one of the aforesaid chemical products different from the one obtained before said substitution.

Abstract: A process for producing synthesis gas (syngas) comprising the endothermic reaction between CO2 and H2S, wherein the energetic supply is provided by the exothermic oxidation of a small portion of H2S to SO2 according to the following reaction scheme: R2: H2S+1.5O2?SO2+H2O said process being carried out according to the following overall theoretical reaction scheme R1, not taking into account the aforementioned exothermic reaction R2, R1: CO2+2H2S?CO+H2+S2+H2O wherein the amount of fed oxygen is comprised between 5% and 25% by volume over the total volume of fed reactants gaseous mixture.

Abstract: A process for producing synthesis gas (syngas) comprising the endothermic reaction between CO2 and H2S, wherein the energetic supply is provided by the exothermic oxidation of a small portion of H2S to SO2 according to the following reaction scheme: R2: H2S+1.5O2?SO2+H2O said process being carried out according to the following overall theoretical reaction scheme R1, not taking into account the aforementioned exothermic reaction R2, R1:CO2+2H2S?CO+H2+S2+H2O wherein the amount of fed oxygen is comprised between 5% and 25% by volume over the total volume of fed reactants gaseous mixture.