Carbonization device

Abstract

The present invention is provided with: a supply feeder that supplies the low-grade charcoal; heating means that heat the low-grade charcoal; a shooter that sends out carbonization gas and generated carbonized charcoal; a reference gas supply source that adds a reference gas to the carbonization gas; a gas concentration measurement device that measures the concentration (Cs) of the reference gas and the concentration (Cc) of carbon dioxide in the mixed gas of the reference gas and the carbonization gas from the shooter; and a computation control device that, on the basis of the concentrations (Cc) and (Cs), the supply flow rate of the reference gas, and the supply weight of the low-grade charcoal, calculates the amount of carbon dioxide generated, determines the carbonization fraction of the low-grade charcoal, and controls a heating means in a manner so as to result in a target carbonization fraction.

1 . A pyrolysis apparatus, comprising:
 a furnace main body in which a solid organic material flows;   organic material supply means for supplying the organic material into the furnace main body;   heating means for heating the organic material in the furnace main body;   sending-out means for sending out a solid pyrolysis product and a pyrolysis gas resulting from the heating and pyrolysis in the furnace main body;   standard gas supply means for adding a standard gas including an inert gas to the pyrolysis gas;   gas concentration measurement means for measuring a concentration Cs of the standard gas and a concentration Cc of an analyte gas including at least one of carbon monoxide, carbon dioxide, hydrogen gas, hydrocarbon gases, and H 2 O in a mixture gas of the pyrolysis gas and the standard gas sent out of the sending-out means; and   arithmetic control means for
 calculating an amount Fc of the analyte gas generated per unit weight of the organic material by the following formula (1) on the basis of the concentration Cc of the analyte gas and the concentration Cs of the standard gas measured by the gas concentration measurement means, a flow amount Fs per unit time of the standard gas added from the standard gas supply means, and a weight Wo of the organic material supplied per unit time from the organic material supply means into the furnace main body, 
 determining a pyrolysis ratio Dt per unit weight of the organic material from a map being inputted in advance and showing a relationship between the amount Fc of the analyte gas generated and a pyrolysis ratio per unit weight of the organic material, and 
 controlling the heating means to make the pyrolysis ratio Dt equal to a desired pyrolysis ratio Dr:
     Fc={Fs ( Cc/Cs )}/ Wo   (1).
 
 
   
     
     
         2 . The pyrolysis apparatus according to  claim 1 , wherein the arithmetic control means controls the heating means to raise a heating temperature of the organic material, when the pyrolysis ratio Dt is lower than the pyrolysis ratio Dr. 
     
     
         3 . The pyrolysis apparatus according to  claim 1  wherein the arithmetic control means controls the heating means to lower a heating temperature of the organic material, when the pyrolysis ratio Dt is higher than the pyrolysis ratio Dr. 
     
     
         4 . The pyrolysis apparatus according to  claim 1 , wherein
 the heating means heats the furnace main body from outside.   
     
     
         5 . The pyrolysis apparatus according to  claim 1 , wherein
 the standard gas supply means supplies the standard gas to the furnace main body on an upstream side thereof in a flow direction of the organic material.   
     
     
         6 . The pyrolysis apparatus according to  claim 1 , wherein
 the organic material is a low-rank coal.