Method and device for operating a conveyor for a combustion product

Abstract

Method and device for operating a conveyor for a combustion product, in which, during the conveyance, through the detection and analysis of properties (such as volume flow, mass flow, moisture, temperature, grain size) of the combustion product by means of microwaves, a control of transport parameters (such as transport speed, cooling of the combustion product, supply of combustion product, degree of crushing) is realized. It is herein possible to protect the conveyor thermally and mechanically and, at the same time, to ensure real-time regulation of the composition and quantity of the combustion product for following treatment steps.

1 . Method for operating a conveyor for a combustion product, comprising at least the following steps:
 a) lying transportation of a combustion product;   b) falling transportation of the combustion product;   c) during the falling of the combustion product, detection of one or more properties of the combustion product by means of microwaves;   d) relaying of at least one of the detected properties to a control unit;   e) analysis of the at least one relayed property in the control unit; and   f) on the basis of at least the analysis of the at least one relayed property, controlling of one or more parameters of the transportation.   
     
     
         2 . Method according to  claim 1 , wherein the combustion product is crushed in the region of a transition from the lying transport to the falling transport. 
     
     
         3 . Method according to  claim 1 , wherein the at least one property of the combustion product which is set to be detected is at least one from the following group:
 volume flow;   mass flow;   moisture;   temperature; and   grain size.   
     
     
         4 . Method according to  claim 1 , wherein the at least one parameter of the transportation which is set to be controlled is at least one from the following group:
 speed of the lying transportation;   cooling of the combustion product;   supply of combustion product; and   degree of the crushing.   
     
     
         5 . Method according to  claim 1 , further comprising: step g), in which one or more process variables for the operation of a boiler are adjusted by the control unit on the basis of the analysis of the relayed property of the combustion product, the process variable comprising at least one of the following group:
 supplied combustion air;   supplied fuel quantity;   temperature of the combustion; and   delivery quantity of combustion product.   
     
     
         6 . Conveyor for transporting a combustion product, comprising at least the following components:
 transport means with drive for the lying transport of a combustion product;   situated downstream thereof, a drop shaft;   arranged in the drop shaft, measuring means for detecting one or more properties of the combustion product by means of microwaves;   control unit for analysing the detected properties and for controlling the conveyor on the basis of the analysis.   
     
     
         7 . Conveyor according to  claim 6 , wherein a crusher is arranged between the transport means and the drop shaft. 
     
     
         8 . Conveyor according to  claim 6 , wherein the conveyor additionally has a cooler, which cools the combustion product at least in the region of the transport means and can be regulated by the control unit. 
     
     
         9 . Conveyor according to  claim 6 , wherein the transport means is a troughed chain conveyor or conveyor belt and can be regulated by the control unit. 
     
     
         10 . Combustion plant, comprising:
 a conveyor and a boiler;   
       wherein the conveyor is constructed and arranged to transport a combustion product; 
       wherein the conveyor includes at least the following components:
 transport means with drive for the lying transport of the combustion product, 
 situated downstream thereof, a drop shaft, 
 arranged in the drop shaft, measuring means for detecting one or more properties of the combustion product by means of microwaves, 
 control unit for analysing the detected properties and for controlling the conveyor on the basis of the analysis; and 
 
       wherein the control unit is configured to control an operating resource of the boiler.