Conveyor/cooler of loose materials
OwnerMario Magaldi, Alberto Carreainventors
Life of this patent
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Abstract
A conveyor/cooler of hot loose materials produced by fluid bed boilers and various industrial processes includes one or more feeding channels, which are substantially vertical or at any inclination. Because of gravity, the material leaves the combustion chamber of the boiler. A metallic container is connected to the downstream end of the discharging channels. A metallic conveyor belt driven by a motor is placed within the container, and the material from the downstream end of the channels is laid on the conveyor belt, thus forming a travelling continuous bed. The belt therefore constitutes a regenerative heat exchanger which absorbs heat from the material during the forward run and gives it back to the air during the backward run.
Claims23
A Conveyor/cooler of hot loose solid materials produced by fluid bed boilers or various industrial processes comprising:
- one or more discharge channel(s) substantially vertical or at any inclination along which, because of gravity, the hot loose solid material leaves an area wherein the hot loose solid material is generated;
- a sealed metallic container connected to a downstream end of said one or more discharge channel(s);
- a conveyor belt disposed within said container and driven by a motor;
- and
- a speed changer for changing an advancing belt speed, the speed changer being operatively coupled to an overpressure sensor and responsive to a signal from the overpressure sensor, a material flow rate being provided by a set belt speed for a given thickness of a material layer on the belt,
- wherein the hot loose solid material from the downstream end of said one or more discharge channel(s) is layered forming a continuous travelling material bed on the conveyor belt,
- wherein said belt is adapted to absorb heat from the hot loose solid material and deliver heat to air inside the conveyor/cooler,
- wherein a distance between said downstream end of discharge tube(s), said one or more discharge channel(s), and the belt is set to allow passage of pieces of material having a predetermined largest supposed size, and
- wherein said one or more discharge channel(s), when full of the hot loose solid material, forms a plug for separation of pressure between said container and said area wherein the hot loose solid material is generated.
A method for conveying and cooling hot loose solid materials produced by fluid bed boilers or various industrial processes comprising the steps of:
- discharging the hot loose solid material through one or more discharge channel(s) to a sealed metallic container, said one or more discharge channel(s) forming a plug for separation of pressure between said container and an area wherein the hot loose solid material is generated when said one or more discharge channel(s) are full of the hot loose solid material;
- dropping the hot material on a conveyor belt driven by a motor forming a continuous travelling material bed on the conveyor belt;
- absorbing heat to the belt from the hot loose solid material;
- and
- delivering said heat to air inside the container,
- wherein as the thickness of a material layer on the belt is set, a material flow rate is adjusted by changing an advancing belt speed according to a signal from an overpressure sensor.
Dependencies are inferred from the claim text.