A hydrothermal treatment device (3) is a hydrothermal treatment device (3) performing hydrothermal treatment by heating high-water-content biomass, the hydrothermal treatment device (3) including a treatment container (21) that stores sludge, a sludge supply unit (22) that supplies the sludge to inside of the treatment container (21) such that a space (S) is formed in a vertical upper part of the treatment container (21), a stirrer (23) that is provided within the treatment container (21) and stirs stored matter such that counter flows in an up/down direction occur, and a heat transfer tube (24) that is disposed in a horizontal direction within the treatment container (21) and heats the sludge with heat of vapor flowing within the heat transfer tube (24).

Disclosed is a device for treating high-concentration organic wastewater by catalyst hydrothermal gasification, including a CHG reactor, a temporary wastewater storage tank and a condensing heat exchanger which are sequentially in loop connection. The CHG reactor includes a shell, a thermocouple, a water distribution device, and a packing support. The device of the present disclosure can quickly convert the high-concentration organic wastewater into clean energy or harmless gas at a low temperature under the action of a catalyst, so that the energy consumption of a treatment process is greatly reduced, and the treatment efficiency is improved. The device has potential application prospect.

A hydrothermal treatment device (3) is a hydrothermal treatment device (3) performing hydrothermal treatment by heating high-water-content biomass, the hydrothermal treatment device (3) including a treatment container (21) that stores sludge, a sludge supply unit (22) that supplies the sludge to inside of the treatment container (21) such that a space (S) is formed in a vertical upper part of the treatment container (21), a stirrer (23) that is provided within the treatment container (21) and stirs stored matter such that counter flows in an up/down direction occur, and a heat transfer tube (24) that is disposed in a horizontal direction within the treatment container (21) and heats the sludge with heat of vapor flowing within the heat transfer tube (24).

The present invention discloses a system and method for supercritical water gasification (SCWG) of biomass materials wherein the system includes a SCWG reactor and a plurality of heat exchangers located within a shared pressurized vessel, which decouples the function of containing high pressure from the high temperature function. The present invention allows the heat transfer function to be conducted independently from the pressure transfer function such that the system equipment can be designed and fabricated in manner that would support commercial scaled-up SCWG operations. By using heat exchangers coupled to the reactor in a series configuration, significant efficiencies are achieved by the present invention SCWG system over prior known SCWG systems.

The invention relates to an arrangement for preparing a gas in a closable reactor by supplying the reactor with carbon-based biomass or chopped wood material, such as chips, in substantially oxygen-free conditions, by allowing the biomass or wood material to gasify at a high temperature, and by recovering the gas generated in a gasification reaction. In that the arrangement the reactor has its interior defined by a feed pipe whose inlet end is closable with a shut-off valve, especially with a ball valve, and whose outlet end adjoins a heatable gasification dome, biomass or chopped wood material is delivered from the feed pipe's inlet end into the reactor's interior, the reactor's interior is supplied with free water/water vapor in its supercritical state, which is optionally prepared catalytically by splitting water/water vapor, the biomass or wood material is conveyed into a gasification space of the reactor's interior, which is in connection with the heated gasification dome and which is adapted to have existing conditions selected in a manner such that the water present in said gasification space is present in its supercritical state, and the gas generated in the gasification reaction is recovered.

The present invention discloses a system and method for supercritical water gasification (SCWG) of biomass materials wherein the system includes a SCWG reactor and a plurality of heat exchangers located within a shared pressurized vessel, which decouples the function of containing high pressure from the high temperature function. The present invention allows the heat transfer function to be conducted independently from the pressure transfer function such that the system equipment can be designed and fabricated in manner that would support commercial scaled-up SCWG operations. By using heat exchangers coupled to the reactor in a series configuration, significant efficiencies are achieved by the present invention SCWG system over prior known SCWG systems.

The invention relates to an arrangement for preparing a gas in a closable reactor by supplying the reactor with carbon-based biomass or chopped wood material, such as chips, in substantially oxygen-free conditions, by allowing the biomass or wood material to gasify at a high temperature, and by recovering the gas generated in a gasification reaction. In that the arrangement the reactor has its interior defined by a feed pipe whose inlet end is closable with a shut-off valve, especially with a ball valve, and whose outlet end adjoins a heatable gasification dome, biomass or chopped wood material is delivered from the feed pipe's inlet end into the reactor's interior, the reactor's interior is supplied with free water/water vapor in its supercritical state, which is optionally prepared catalytically by splitting water/water vapor, the biomass or wood material is conveyed into a gasification space of the reactor's interior, which is in connection with the heated gasification dome and which is adapted to have existing conditions selected in a manner such that the water present in said gasification space is present in its supercritical state, and the gas generated in the gasification reaction is recovered.

A process for the gasification of wet biomass. The process comprises heating wet biomass at a pressure in the range of from 22.1 MPa to 35 MPa. The wet biomass is heated from a temperature of at most T.sub.1 to a temperature of at least T.sub.2 by heat exchange with a first heating fluid. The gasification product is further heated. The further heated gasification product is used as the first heating fluid, upon which the further heated gasification product is cooled down from a temperature of at least T.sub.3 to a temperature of at most T.sub.4. The temperatures T.sub.1, T.sub.2, T.sub.3 and T.sub.4 can be calculated by using certain mathematical formulae. Also claimed: a reaction apparatus for the gasification of wet biomass.

A plant for the disposal of wastes includes a supercritical water oxidation reactor, a supercritical water gasification reactor, and a feeding system configured for feeding at least two organic currents of wastes to the supercritical water oxidation reactor and supercritical water gasification reactor and configured for feeding at least one aqueous flow within said plant. The feeding system is configured for feeding the at least one aqueous current with a series flow through the supercritical water oxidation reactor and supercritical water gasification reactor. The feeding system is configured for feeding the at least two organic currents of wastes with a parallel flow through the supercritical water oxidation reactor and supercritical water gasification reactor and so as to selectively feed each of the organic currents of wastes to the supercritical water oxidation reactor or to the supercritical water gasification reactor.

A method for the conversion of organic waste and/or biological waste into combustible products includes: feeding a first flow having organic waste and/or biological waste: performing a pyrolysis of the first flow to obtain one or more liquid pyrolysis products, one or more gaseous pyrolysis products, and one or more solid pyrolysis products; mixing the one or more solid pyrolysis products with a first aqueous flow, and subjecting the mixture to oxidation to obtain oxidation products; taking a first gaseous flow from the oxidation products; subjecting the one or more gaseous pyrolysis products to reforming, thereby obtaining one or more reforming products, taking a second gaseous flow from the reforming products, and subjecting the first gaseous flow and the second gaseous flow to catalytic hydrogenation, to obtain at least one first combustible.