Objetivo
The aim of the project is to demonstrate the technical and economical feasibility of a new type three-chamber furnace for the annealing of aluminium coils. The ventilation air for the removal of vapours will be limited considerably. An incinerator for the polluted air is integrated. The three-chambers-in-line replace three existing furnaces. Energy and environment will be saved. Moreover logistic and other costs can be reduced. Present technology (three-chamber recuperative incinerators) is far from remunerative for these small emitters. Small afterburners will consume more energy.L%
The installation consists of the following main components :
A. FURNACE CHAMBERS
Three furnace chambers are composed from welded steel sheets, strengthened with steel sheets or profiles. The inner sheets are gastight and from heat resistant material. Insulation materials are rockwool and ISO P3 and ISO P4, that replace the normally utilised ceramic materials and asbestos.
The first chamber is for heating, the second for holding at a constant temperature and the third for cooling. The chambers have airtight steel doors with a pneumatic system. The sealing has no watercooling.
B. HEATING SYSTEM
Indirect gas fired heat exchangers take care of heating of the chambers. Process air is supplied by a ventilator. The heat exchangers are specially designed for this type of furnace. An important contribution to the necessary energy is delivered by the energy content of the hydrocarbons in the exhaust air. An assistant heater is added.
C. HEAT CONVEYING SYSTEM
A computer programme ("PHOENICS") has been used for the calculation and the design of the heat conveying system. The coils are heated at the front ends, thus making use of the good conducting characteristics of aluminium. The suspension system of the coil has adjustable spoilers to guide the heated air to the front ends.
D. INCINERATION SYSTEM
The polluted air is sucked out of the furnace chamber by a ventilator. In the incinerator the mixture is heated up to 750 deg. C and incinerated. The ventilation fresh air enters by a heat exchanger and is heated up before entering the furnace chamber. At the end of the evaporation time an assistant electric heater provides for the falling energy amount.
Programa(s)
Tema(s)
Convocatoria de propuestas
Data not availableRégimen de financiación
DEM - Demonstration contractsCoordinador
5692 EB SON
Países Bajos