Reformed coal production equipment, and method for controlling same

Abstract

Reformed coal production equipment includes: a combustion furnace ( 124 ) generating heated gas; dry distillation gas supply pipe ( 101 ) supplying dry distillation gas ( 14 ) generated at the inner cylinder ( 122 ) of a dry distillation device ( 121 ) to the combustion furnace; vapor generator ( 125 ) to which a portion of the heated gas ( 11 ) generated at the combustion furnace is supplied and which generates waste heat gas ( 13 ) by subjecting the heated gas to heat exchange; and discharge pipe ( 52 ), waste heat gas delivery pipe ( 53 ), mixed gas delivery pipe ( 55 ), blower ( 126 ), mixed gas supply pipe ( 56 ), mixed gas branching pipe ( 102 ), flow rate adjustment valve ( 103 ), and mixed gas allocation pipe ( 105 ) which supply and allocate, to the aforementioned inner cylinder, the waste heat gas and low-temperature heated gas ( 12 ) generated by indirectly heating dried coal ( 2 ) by the heated gas within the outer cylinder ( 123 ) of the dry distillation device.

1 . Upgraded coal production equipment including
 drying means for drying coal,   pyrolysis means for performing pyrolysis on the dried coal, and   cooling means for cooling the coal subjected to the pyrolysis,   the pyrolysis means being an indirect-heating pyrolysis device having an inner cylinder into which the dried coal is transferred and an outer cylinder which is supplied with a heating gas for heating the inner cylinder,   characterized in that the equipment comprises:
 heating gas generation means for generating the heating gas; 
 pyrolysis gas supply means for supplying the heating gas generation means with a pyrolysis gas generated in the inner cylinder; 
 waste-heat gas generation means for receiving supply of part of the heating gas generated in the heating gas generation means and generating a waste-heat gas by subjecting the heating gas to heat exchange; and 
 mixed gas distribution supply means for distributing and supplying, to the inner cylinder, the waste-heat gas and a low-temperature heating gas generated when the heating gas heats the coal indirectly inside the outer cylinder. 
   
     
     
         2 . The upgraded coal production equipment according to  claim 1 , characterized in that
 the mixed gas distribution supply means is connected to the inner cylinder at an inlet side of the inner cylinder which receives the dried coal.   
     
     
         3 . The upgraded coal production equipment according to  claim 2 , characterized in that
 the indirect-heating pyrolysis device includes gas temperature measurement means for measuring a gas temperature, the gas temperature measurement means being provided at an outlet side from which the dried coal is discharged, and   the mixed gas distribution supply means includes
 gas flow rate adjustment means for adjusting a flow rate of the low-temperature heating gas and the waste-heat gas supplied to the inner cylinder, and 
 control means for controlling the gas flow rate adjustment means based on the gas temperature measured by the gas temperature measurement means. 
   
     
     
         4 . The upgraded coal production equipment according to  claim 3 , characterized in that
 the equipment comprises a plurality of equipment main bodies being arranged in parallel and each having the drying means, the indirect-heating pyrolysis device, and the cooling means.   
     
     
         5 . A method for controlling the upgraded coal production equipment according to  claim 3 , characterized in that the method comprises:
 stopping supply of the coal to the inner cylinder;   supplying the low-temperature heating gas and the waste-heat gas to the inner cylinder through control of the gas flow rate adjustment means by the control means, and meanwhile increasing an amount of fuel supplied to the heating gas generation means; and   stopping the supply of the low-temperature heating gas and the waste-heat gas to the inner cylinder through control of the gas flow rate adjustment means by the control means when the gas temperature measured by the gas temperature measurement means falls below a predetermined temperature.   
     
     
         6 . A method for controlling the upgraded coal production equipment according to  claim 4 , the method comprising:
 in the equipment main body to be shut down, stopping supply of the coal to the inner cylinder, and meanwhile, in the equipment main body in steady operation, increasing an amount of the coal supplied to the inner cylinder and increasing an amount of the heating gas supplied to the outer cylinder;   in the equipment main body to be shut down, starting supply of the low-temperature heating gas and the waste-heat gas to the inner cylinder through control of the gas flow rate adjustment means by the control means;   in the equipment main body to be shut down, stopping the supply of the heating gas to the outer cylinder when all the coal is discharged from the inner cylinder, and meanwhile, in the equipment main body in steady operation, bringing the supply of the heating gas to the outer cylinder to a steady state; and   in the equipment main body to be shut down, stopping the supply of the low-temperature heating gas and the waste-heat gas to the inner cylinder through control of the gas flow rate adjustment means by the control means when all the pyrolysis gas is discharged from the inner cylinder.