Suez International

Terranova Energy Gmbh

Jean-Louis Bourdais

Pierre Emmanuel Pardo

Marlène Choo-Kun

A method for incinerating organic matter derived from the treatment of wastewater, or of industrial or agricultural waste, such as sludge and notably treatment plant sludge, is in a fluidized-bed incineration furnace, the furnace including a chamber in the lower part of which there is a bed of particles, preferentially sand, constituting a fluidization zone, in which fluidization zone the organic matter is introduced as fuel whilst air is injected as oxidizer into the bed of sand from a wind box through a fluidization dome surmounting the box. The air passes through passages made in the fluidization dome, and the furnace is configured to treat a nominal value of volume of organic matter to be treated. The method includes a step of adjusting the volume of the fluidization zone as a function of the volume of organic matter to be treated in which, when the volume of organic matter to be treated is lower than the nominal value, the volume of the fluidization zone is reduced from an initial volume to a reduced volume, and the incoming air flow is reduced by closing air passages so only the passages opening into the thus reduced fluidization zone are left active.

Method and furnace for incinerating organic matter derived from the treatment of industrial or agricultural waste or wastewater, such as sludge

The invention relates to a method for hydrothermal carbonisation of biomass containing organic matter, the method comprising: —injecting the biomass, a heat transfer fluid and a reagent into a reactor (), —circulating a mixture consisting of the biomass, the heat transfer fluid and the reagent under specific pressure and temperature conditions for transforming the organic matter by hydrothermal carbonisation. The invention consists in: 1) determining the production rate of the emitted gas Tduring the hydrothermal carbonisation reaction; 2) comparing the determined production rate of the emitted gas Twith a predefined value for the set gas production rate T, and 3) adjusting at least one of the reaction control parameters chosen from among the temperature within the reactor (), the quantity of injected reactant, and the residence time in the reactor in order to adjust the production rate of the emitted gas T, such that the value of said production rate of the emitted gas Te tends to be equal to the value of the set gas production rate T. The invention is applicable to treatment of biomass containing organic matter.

Hydrothermal carbonisation method

Disclosed is a method for heating a biomass moving along an industrial treatment line including an inlet () for the incoming biomass, a pressure pump (), a heating unit () and a treatment station (). According to an embodiment, steam is injected into the line between the pressure pump () and the heating unit () such as to pre-heat the biomass by condensing the steam.

Method for the hydrothermal carbonisation of a biomass and associated device

A method of continuous hydrothermal carbonization of sludge containing organic matter, involving a stage of hydrothermal reaction carried out in a reactor (), includes:

Optimised energy efficiency hydrothermal carbonization method and device

A method of continuous hydrothermal carbonization of sludge containing organic matter involves a step of hydrothermal reaction carried out in a reactor, and at least one cooling step in which the sludge having undergone the hydrothermal reaction step is cooled. The hydrothermal reaction step includes: a step of injection of sludge in which the sludge is injected into the reactor by a first inlet; a step of injection of steam in which steam is injected into the reactor by a second inlet, the second inlet being distinct from the first inlet; a step of circulation, in which a mixture consisting of the sludge and the steam injected into the reactor is placed in circulation within the reactor; a step of continuous extraction of at least a portion of the mixture contained in the reactor by a sludge outlet. Also disclosed is a device for carrying out such a method.

Hydrothermal carbonization method and device with optimised sludge and steam mixing

Disclosed is a method for heating a biomass moving along an industrial treatment line including an inlet () for the incoming biomass, a heating unit (), and a treatment station (). A fraction of the biomass heated by the heating unit () is returned along a return branch (R) to a mixing station () upstream of the heating unit () so as to form, together with the incoming biomass, a mixture having a temperature above the temperature of the incoming biomass, the heated biomass fraction being removed at an outlet () of the treatment station ().

Disclosed is a reactor for treating, particularly by hydrothermal carbonization, sludge containing organic matter, including, with:

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Chateaubriant, France

Jean-Louis Bourdais