Carbonization device

Abstract

The present invention is provided with: a reference gas supply source that adds a reference gas of nitrogen gas to a carbonization gas; a combustor that combusts a mixed gas of the carbonization gas and the reference gas, and sends out an inspection gas; a gas rheometer; a gas concentration measurement device that measures the concentration of the nitrogen gas and the concentration of carbon dioxide in the inspection gas; and a computation control device that determines the flow rate of the nitrogen gas in the mixed gas, determines the amount generated of carbon components in the carbonization gas, determines the carbonization fraction of carbonized charcoal from the concentration of carbon components in low-grade charcoal, the amount generated, and the supply weight of the low-grade charcoal, and controls a valve 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 nitrogen gas to the pyrolysis gas;   test gas production means for sending out a test gas formed by completely combusting a mixture gas of the pyrolysis gas and the standard gas sent out of the sending-out means with air for complete combustion;   test gas flow amount measurement means for measuring a flow amount Fi per unit time of the test gas sent out of the test gas production means;   gas concentration measurement means for measuring a concentration Cc of carbon dioxide and a concentration Cn of nitrogen gas in the test gas; and   arithmetic control means for
 calculating a flow amount Fn per unit time of nitrogen gas in the mixture gas completely combusted by the test gas production means by the following formula (1) on the basis of the flow amount Fi measured by the test gas flow amount measurement means and the concentration Cn measured by the gas concentration measurement means, 
 calculating a generated amount We per unit time of carbon components in the pyrolysis gas sent out of the sending-out means by the following formula (2) on the basis of a flow amount Fs per unit time of the standard gas supplied from the standard gas supply means to the pyrolysis gas, a flow amount Fa per unit time of the air for complete combustion used in the test gas production means, the flow amount Fn calculated by the following formula (1), the flow amount Fi measured by the test gas flow amount measurement means, and the concentration Cc measured by the gas concentration measurement means, 
 calculating a pyrolysis ratio Dt of the pyrolysis product sent out of the sending-out means by the following formula (3) on the basis of a weight Wo of the organic material supplied per unit time into the furnace main body by the organic material supply means, the generated amount We calculated by the following formula (2), and a concentration Cg of carbon components in the organic material inputted in advance, and 
 controlling the heating means to make the pyrolysis ratio Dt equal to a desired pyrolysis ratio Dr:
     Fn=Fi×Cn    (1),
 
     Wc ={( Fi×Cc )/( Fn− 0.781 ×Fa )}×{( Fs/ 22.4)×12}  (2), and
 
     Dt =( Wc/Cg )/ Wo    (3).
 
 
   
     
     
         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.