Kit for sludge incineration comprising following successive modules, each module comprises lateral walls, a ceiling and a bottom: - a module A being presented in the form of an independent chamber A comprising a fluidised bed furnace, means for supplying the fluidised bed furnace with sludge to be incinerated, thermal means of the fluidised bed furnace and fume discharge means, - a module B being presented in the form of an independent chamber B comprising means for cooling fumes (17, 18) coming from the module A, said cooling means (17, 18) successively comprise: o at least one heat exchanger, said exchanged being an air/air exchanger equipped with: - a hot fume inlet, - a cooled fume outlet, - a cold air inlet connected to a compressor located outside of the module B, - a heated air outlet; and o an air/liquid exchanger equipped with: - an inlet for cooled fumes coming from the fume/air exchanger, - a cold fume outlet, - a cold heat-transfer fluid inlet, - a heated heat-transfer fluid outlet. - a module C being presented in the form of an independent chamber C comprising means for filtering cooled fumes, means for discharging (38, 39) filtered fumes, means for storing and means for discharging ash coming from the filtration (36, 37), - removable connection means intended to connect the fume discharging means of module A with the fume cooling means of module B, - removable connection means intended to connect the fume cooling means of module B with the cooled fume filtration means of module C, and, furthermore, - removable connection means intended to connect the heated air outlet to the fluidised bed furnace to supply it with combustion air, - the removable connection means are presented in the form of pipes, the module A being connected to the module B by removable pipes, while the module C is connected to the module B by removable pipes. - a module A being presented in the form of an independent chamber A comprising a fluidised bed furnace, means for supplying the fluidised bed furnace with sludge to be incinerated, thermal means of the fluidised bed furnace and fume discharge means, - a module B being presented in the form of an independent chamber B comprising means for cooling fumes (17, 18) coming from the module A, said cooling means (17, 18) successively comprise: o at least one heat exchanger, said exchanged being an air/air exchanger equipped with: - a hot fume inlet, - a cooled fume outlet, - a cold air inlet connected to a compressor located outside of the module B, - a heated air outlet; and o an air/liquid exchanger equipped with: - an inlet for cooled fumes coming from the fume/air exchanger, - a cold fume outlet, - a cold heat-transfer fluid inlet, - a heated heat-transfer fluid outlet. o at least one heat exchanger, said exchanged being an air/air exchanger equipped with: - a hot fume inlet, - a cooled fume outlet, - a cold air inlet connected to a compressor located outside of the module B, - a heated air outlet; and - a hot fume inlet, - a cooled fume outlet, - a cold air inlet connected to a compressor located outside of the module B, - a heated air outlet; and o an air/liquid exchanger equipped with: - an inlet for cooled fumes coming from the fume/air exchanger, - a cold fume outlet, - a cold heat-transfer fluid inlet, - a heated heat-transfer fluid outlet. - an inlet for cooled fumes coming from the fume/air exchanger, - a cold fume outlet, - a cold heat-transfer fluid inlet, - a heated heat-transfer fluid outlet. - a module C being presented in the form of an independent chamber C comprising means for filtering cooled fumes, means for discharging (38, 39) filtered fumes, means for storing and means for discharging ash coming from the filtration (36, 37), - removable connection means intended to connect the fume discharging means of module A with the fume cooling means of module B, - removable connection means intended to connect the fume cooling means of module B with the cooled fume filtration means of module C, and, furthermore, - removable connection means intended to connect the heated air outlet to the fluidised bed furnace to supply it with combustion air, - the removable connection means are presented in the form of pipes, the module A being connected to the module B by removable pipes, while the module C is connected to the module B by removable pipes.