Abstract: 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 T1 to a temperature of at least T2 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 T3 to a temperature of at most T4. The temperatures T1, T2, T3 and T4 can be calculated by using certain mathematical formulae. Also claimed: a reaction apparatus for the gasification of wet biomass.

Abstract: 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 T1 to a temperature of at least T2 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 T3 to a temperature of at most T4. The temperatures T1, T2, T3 and T4 can be calculated by using certain mathematical formulae. Also claimed: a reaction apparatus for the gasification of wet biomass.

Abstract: 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 T1 to a temperature of at least T2 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 T3 to a temperature of at most T4. The temperatures T1, T2, T3 and T4 can be calculated by using certain mathematical formulae. Also claimed: a reaction apparatus for the gasification of wet biomass.

Abstract: A reaction apparatus for the gasification of wet biomass comprises a feeding system for feeding wet biomass at a pressure of at least 22.1 MPa (absolute), a reactor comprising a reaction tube and a heating device, and a recovery system. The reaction tube is configured to comprise a bed of solid particles suspended in a fluid, and to receive wet biomass from the feeding system at a temperature below the critical temperature of water. The bed of solid particles suspended in a fluid is a bubbling fluidised bed having a length of at least 0.5 m and a cross sectional area of at most 20 dm2. The heating device is configured to heat the feed in the presence of the bed of suspended solid particles to a temperature above the critical temperature of water by heat exchange with a heating fluid, forming supercritical water and fluid gasification product.

Abstract: A process for the gasification of wet biomass comprises feeding the wet biomass at a temperature of at most 370 C. and a pressure of at least 22.1 MPa (absolute) to a reactor. The reactor comprises a bed of solid particles suspended in a fluid. The temperature of the feed is increased in the presence of the bed of suspended solid particles to a temperature of at least 375° C., forming supercritical water and converting in the presence of the supercritical water at least a portion of the organic materials present in the wet biomass into fluid gasification product.