JP5449479B2 - Coal dry distillation apparatus and modified coal production equipment using the same - Google Patents

Description

  The present invention relates to a coal carbonization apparatus and a modified coal production facility using the same.

  Low-grade coal (low quality coal) with a high water content such as lignite and sub-bituminous coal has a low calorific value per unit weight, so it is dried and dry-distilled by heating, and in a low oxygen atmosphere. By modifying so as to reduce the surface activity, the modified coal has an increased calorific value per unit weight while preventing spontaneous ignition.

  Here, as a coal carbonization apparatus for carbonizing dry coal obtained by drying the low-grade coal, for example, an inner cylinder (body body) is rotatably supported inside an outer cylinder (jacket) that is fixedly held, A heating gas is supplied to the inside of the cylinder (between the outer cylinder and the inner cylinder), and the dry charcoal is supplied to the inside from one end side of the inner cylinder, and the inner cylinder is rotated. A rotary kiln type is known that heats and dry-distills while stirring while moving from one end side to the other end side of the inner cylinder, and sends dry carbonized coal and dry distillation gas from the other end side of the inner cylinder. ing.

JP 2003-176985 A JP 2004-003738 A Japanese Patent Laid-Open No. 10-230137 Special table 2009-539605 gazette

By the way, when the dry coal is carbonized, a carbonization gas (pyrolysis gas) containing not only carbon monoxide, water vapor, tar, etc., but also a trace amount of mercury-based substances such as HgS and HgCl ₂ contained in the dry coal. ) Will occur.

  Further, the inside of the inner cylinder (main body cylinder) of the coal kiln of the rotary kiln type as described above is covered with the outer cylinder (jacket) and heated by the heated gas (center in the axial direction). Although a high temperature can be maintained, the temperature of the portion that protrudes from the outer cylinder without being covered with the outer cylinder and is not heated by the heated gas (the other end side in the axial direction) is lowered.

  For this reason, when the carbonized carbon and the carbonized gas inside the inner cylinder of the coal carbonization apparatus are moved to the other end side of the inner cylinder, the temperature decreases, and the carbonized coal is in the carbonized gas. The mercury-based material was adsorbed, and the mercury concentration in the carbonized carbon sent from the other end of the inner cylinder was high.

  In view of the above, an object of the present invention is to provide a coal dry distillation apparatus capable of suppressing an increase in mercury concentration in the produced dry distillation coal and a modified coal production facility using the same.

  In order to solve the above-described problem, the coal carbonization apparatus according to the first aspect of the invention supports the inner cylinder rotatably inside the outer cylinder, is supplied with heated gas inside the outer cylinder, and By supplying coal from one end side of the inner cylinder to the inside and rotating the inner cylinder, the coal is heated and dry-distilled with stirring while moving from one end side to the other end side of the inner cylinder. In a rotary kiln-type coal carbonization device that delivers carbonized carbon and carbonized gas from the other end side of the cylinder, an amount of 1 to 10% by weight with respect to the amount of the carbonized coal sent from the other end side of the inner cylinder; Thus, pulverized coal supply means for supplying pulverized coal having a particle size of 100 μm or less to the inside of the inner cylinder is provided.

  According to a second aspect of the present invention, in the first aspect of the invention, the pulverized coal supply means supplies the pulverized coal closer to the other end where the temperature lowers than the center in the axial direction inside the inner cylinder. It is a thing to do.

  In the first or second invention, the coal carbonization apparatus according to the third invention is the uppermost position of the opening on the other end side of the inner cylinder and the uppermost position of the opening on the other end side of the inner cylinder. An exhaust nozzle that is disposed so as to position the tip between the surface position of the layer of the carbonized coal existing in the lower position and that delivers the carbonized gas from the other end side of the inner cylinder is provided. Features.

  Further, the modified coal production facility according to the fourth aspect of the invention for solving the above-mentioned problems is a coal drying means for drying coal, and a first for carbonizing dry coal dried by the coal drying means. To the third aspect of the invention.

  A reformed coal production facility according to a fifth aspect of the invention is characterized in that, in the fourth aspect of the invention, the reformed coal production facility is provided with a carbonized coal cooling means for cooling the carbonized carbon that has been carbonized by the coal carbonization device.

  A reformed coal production facility according to a sixth aspect of the invention is the fifth aspect of the invention, further comprising an inactivation treatment means for inactivating the dry-distilled coal cooled by the dry-distilled coal cooling means with an oxygen-containing gas. It is characterized by being.

  A modified coal production facility according to a seventh aspect of the present invention is the modified coal production facility according to the fourth aspect, wherein the pulverized coal supply means generates and collects the pulverized coal generated and recovered along with the drying of the coal by the coal drying means. It is what supplies.

  The modified coal production facility according to the eighth invention is the fifth invention, wherein the pulverized coal supply means fractionates and finely pulverizes a part of the dry distillation coal cooled by the dry distillation coal cooling means. It is characterized by supplying pulverized coal.

  In the modified coal production facility according to the ninth aspect of the invention, in the sixth aspect of the invention, the pulverized coal supply means is recovered from the oxygen-containing gas obtained by inactivating the dry-distilled coal by the inactivation treatment means. The pulverized coal is supplied.

  According to the coal carbonization apparatus and the reformed coal production facility using the same according to the present invention, the pulverized coal supply means is 1 to 10% by weight with respect to the amount of the carbonized coal sent from the other end side of the inner cylinder. Since the pulverized coal having a particle size of 100 μm or less is supplied to the inside of the inner cylinder so as to be a quantity, the pulverized coal and dry-distilled coal are located on the other end side inside the inner cylinder, that is, the portion that is not heated by the heating gas When the temperature of pulverized coal and carbonized coal decreases, the mercury-based material in the carbonized gas has a particle size of pulverized coal much smaller than the particle size of carbonized coal, and the surface area of pulverized coal per unit weight However, since carbon dioxide is much larger than that of carbonized carbon, most of it adsorbs to pulverized coal more than carbonized carbon, so that an increase in the mercury concentration in the carbonized carbon produced can be suppressed.

It is a schematic block diagram of 1st embodiment of the modified coal manufacturing equipment which concerns on this invention. It is a schematic block diagram of the principal part of the coal carbonization apparatus of FIG. It is a schematic block diagram of 2nd embodiment of the modified coal manufacturing equipment which concerns on this invention. It is a schematic block diagram of the principal part of the coal carbonization apparatus of FIG. It is a schematic block diagram of 3rd embodiment of the modified coal manufacturing equipment which concerns on this invention. It is a schematic block diagram of 4th embodiment of the modified coal manufacturing equipment which concerns on this invention. It is a schematic block diagram of the principal part of the coal dry distillation apparatus of 5th embodiment of the modified coal manufacturing equipment which concerns on this invention. It is a schematic block diagram of the waste gas processing apparatus of 6th embodiment of the modified coal manufacturing equipment which concerns on this invention.

  Embodiments of a coal carbonization apparatus and a modified coal production facility using the same according to the present invention will be described based on the drawings, but the present invention is not limited to only the following embodiments described based on the drawings. Absent.

<First embodiment>
A first embodiment of a coal carbonization apparatus and a modified coal production facility using the same according to the present invention will be described with reference to FIGS.

  As shown in FIG. 1, a coal drying apparatus 110, which is a coal drying means for drying low-grade coal (low-quality coal) 1, which is coal having a high water content such as lignite and sub-bituminous coal, has low-grade coal 1. A hopper 111 for receiving the inside, an inner cylinder (main body barrel) 112 that is rotatably supported and supplies the low-grade coal 1 in the hopper 111 from one end side (base end side) to the inside, and the inner cylinder 112 An outer cylinder (jacket) 113 that is fixedly supported so as to cover the outer peripheral surface of the inner cylinder 112 while being able to rotate and is supplied with steam 11 as a heating medium inside (between the inner cylinder 111), The dried charcoal 2 connected to the other end side (tip side) of the inner cylinder 112 and dried so as to allow the inner cylinder 112 to rotate is dropped downward from the other end side (tip side) of the inner cylinder 112. And a shooter 114 for delivery.

  One end side (base end side) of the inner cylinder 112 of the coal drying apparatus 110 is connected to a distal end side of an inert gas supply line 115 that supplies an inert gas 12 such as nitrogen gas. An upper end of the shooter 114 is connected to one end side of an exhaust line 116 that discharges the inert gas 12 containing carbon monoxide and water vapor. The other end side of the exhaust line 116 is connected to a cyclone separator 117 that separates and collects the pulverized coal 2 a generated by drying the low-grade coal 1 from the inert gas 12.

  Connected to the cyclone separator 117 is one end side (base end side) of a circulation line 118 having a condenser 118a for condensing and removing water vapor in the inert gas 12 from which the pulverized coal 2a has been separated into water 13. doing. The other end side (front end side) of the circulation line 118 is connected to the middle of the inert gas supply line 115.

  The lower side of the shooter 114 of the coal drying apparatus 110 is connected to the upstream side in the transport direction of a dry charcoal transport line 119 such as a belt conveyor that transports the dry charcoal 2 delivered from the shooter 114. The downstream side of the dry coal conveyance line 119 in the conveyance direction communicates with a coal carbonization device 120 that carbonizes the dry coal 2.

  As shown in FIGS. 1 and 2, the coal carbonization device 120 includes a hopper 121 that receives the dry coal 2 from the dry coal conveyance line 119, and the dry coal 2 in the hopper 121 that is rotatably supported. An inner cylinder (main body barrel) 122 supplied to the inside from one end side (base end side) and the inner cylinder 122 are fixedly supported so as to cover the outer peripheral surface of the inner cylinder 122 while allowing the inner cylinder 122 to rotate. An outer cylinder (jacket) 123 supplied with the heating gas 17 as a heating medium between the inner cylinder 121 and the other end side (tip side) of the inner cylinder 122 so that the inner cylinder 122 can be rotated. ) And a shooter 124 that drops and sends the carbonized carbon 3 that has been carbonized to the lower side from the other end side (tip side) of the inner cylinder 122.

  As shown in FIG. 1, at the upper part of the shooter 124 of the coal carbonization device 120, one end side (base end) of an exhaust line 126 that discharges carbonization gas (pyrolysis gas) 14 such as carbon monoxide, water vapor, and tar. Side) is connected. The other end side (front end side) of the exhaust line 126 is connected to a combustion furnace 127 to which air 15 and the auxiliary combustion agent 16 are supplied.

  In the combustion furnace 127, a part of the inert gas 12 from which the water 13 has been removed in the circulation line 118 of the coal drying apparatus 110 is extracted from the circulation line 118 and supplied into the combustion furnace 127. 128 are connected. The combustion furnace 127 is connected to one end side (base end side) of a heating gas supply line 125 that supplies the heating gas 17 generated in the combustion furnace 127. The other end side (tip end side) of the heated gas supply line 125 communicates with the inner side of the outer cylinder 123.

  The lower side of the shooter 124 of the coal carbonization device 120 communicates with a cooling device 130 that is a carbonization cooling means for cooling the carbonized coal 3 sent from the shooter 124. The cooling device 130 includes a hopper 131 that receives the carbonized carbon 3 from the shooter 124 of the coal carbonization device 120, and a hopper 131 that is rotatably supported so that the carbonized carbon 3 in the hopper 131 is on one end side (base side). The inner cylinder (main body barrel) 132 that is supplied from the inside and the cooling water 18 is showered inside, and the inner cylinder 132 can be rotated while being fixedly supported so as to cover the outer peripheral surface of the inner cylinder 132. The outer cylinder (jacket) 133 and the inner cylinder 132 are connected to the other end side (front end side) of the inner cylinder 132 and cooled so that the carbonized carbon 3 is cooled. And a shooter 134 that drops and sends downward from the other end side (front end side).

  The lower side of the shooter 134 of the cooling device 130 communicates with the upstream side in the conveying direction of the dry distillation coal transfer line 139 such as a belt conveyor for transferring the dry distillation coal 3 sent from the shooter 134. The downstream side of the dry distillation coal transfer line 139 in the transfer direction communicates with the upper portion of the tower main body 141 of the deactivation processing apparatus 140 which is an inactivation processing means for deactivating the dry distillation coal 3. An air supply line 142 having an air blower 142 a for supplying air 15, which is an oxygen-containing gas, is connected to the tower body 141.

  The lower part of the tower main body 141 of the deactivation processing apparatus 140 is in contact with a kneading apparatus 151 which is a kneading means for mixing the deactivated modified coal 4 with a binder 5 such as starch and water 6. Yes. The kneading device 151 communicates with a compression device 152 which is a compression means for compressing the reformed coal 4 kneaded with the binder 5 and the water 6 and molding the reformed coal 4 into a molded coal 7.

  In addition, the tower main body 141 of the deactivation processing device 140 has an exhaust air line 143 that sends exhaust air 19 that is oxygen-containing air obtained by inactivating the dry distillation coal 3 from the inside of the tower main body 141. One end side (base end side) is connected. The other end side (front end side) of the exhaust air line 143 is connected to a cyclone separator 144 that separates and collects the pulverized coal 4a in the exhaust air 19.

  Below the cyclone separator 144 of the deactivation processing device 140, the pulverized coal 4 a separated from the exhaust air 19 is communicated to a pulverized coal transport device 171 that carries out the cyclone separator 144. One side (right side in FIG. 1) of the pulverized coal conveying device 171 communicates with a recovery container 172 that recovers the pulverized coal 4a.

  The other side (left side in FIG. 1) of the pulverized coal conveying device 171 communicates with a hopper 173 that receives the pulverized coal 4a. The lower part of the hopper 173 is connected to the base end side of a feeder 174 that feeds the pulverized coal 4a in the hopper 173 in a fixed amount. The front end side of the feeder 174 communicates with the hopper 121 of the coal carbonization device 120 via a conveyor 175.

  One end side (base end side) of an exhaust gas line 161 having a delivery blower 161 a for discharging the exhaust gas 17 a of the heated gas 17 from the inside of the outer cylinder 113 is connected to the outer cylinder 113 of the coal carbonization device 120. . The exhaust gas line 161 is provided with a capacitor 161b for cooling the exhaust gas 17a.

  The other end side (front end side) of the exhaust gas line 161 communicates with a gas receiving portion of a denitration apparatus 162 that is a denitration means for spraying the ammonium chloride aqueous solution 21 onto the exhaust gas 17a. The gas sending unit of the denitration device 162 communicates with a gas receiving unit of an electric dust collector 163 that is dust removing means for separating and removing dust and the like in the exhaust gas 17a. The gas delivery unit of the electrostatic precipitator 163 communicates with a gas receiving unit of a desulfurization device 164 that is a desulfurization unit that sprays calcium carbonate slurry 22 on the exhaust gas 17a. The gas delivery unit of the desulfurization device 164 communicates outside the system.

  In this embodiment, the hopper 111, the inner cylinder 112, the outer cylinder 113, the shooter 114, the inert gas supply line 115, the exhaust line 116, the cyclone separator 117, and the circulation line 118 The dry coal transport line 119 and the like constitute a coal drying apparatus 110, and the hopper 121, the inner cylinder 122, the outer cylinder 123, the shooter 124, the heated gas supply line 125, the exhaust line 126, the combustion The coal 127 is constituted by the furnace 127, the extraction line 128, etc., and the cooling device 130 is constituted by the hopper 131, the inner cylinder 132, the outer cylinder 133, the shooter 134, the dry coal conveyance line 139, etc. The tower main body 141, the air supply line 142, the exhaust air line 14 The cyclone separator 144 or the like constitutes an inactivation processing device 140, and the kneading device 151 or the compression device 152 or the like constitutes a charcoal production device 150 serving as a coal production unit, and the exhaust gas line 161 or the denitration device. The apparatus 162, the electrostatic precipitator 163, the desulfurization apparatus 164, etc. constitute an exhaust gas treatment apparatus 160 which is an exhaust gas treatment means, and the pulverized coal transfer apparatus 171, the recovery container 172, the hopper 173, the feeder 174, the conveyor 175. The pulverized coal supply device 170, which is pulverized coal supply means, is configured by the above, the coal drying device 110, the coal carbonization device 120, the cooling device 130, the inactivation processing device 140, the coal forming apparatus 150, the Reformed by exhaust gas treatment device 160, pulverized coal supply device 170, etc. Constitute a charcoal manufacturing facility 100.

  Next, the operation that is the center of the above-described modified coal production facility 100 will be described first.

  Steam 11 is supplied into the outer cylinder (jacket) 123 of the coal drying apparatus 110, the low-grade coal 1 (average particle size: around 10 mm) is put into the hopper 111, and the low-grade coal 1 is supplied to the inner cylinder. When the inert gas 12 is supplied into the inner cylinder 112 while being supplied into the (main body cylinder) 112, the low-grade coal 1 is stirred while the inner cylinder 112 is rotated. By moving from one end side to the other end side, it is uniformly dried by heating (about 150 to 200 ° C.) to become dry charcoal 2 (average particle size: around 5 mm), and the dry charcoal transport line 119 is passed through the shooter 114. And supplied into the hopper 121 of the coal carbonization device 120.

  The inert gas 12 (about 150 to 200 ° C.) fed into the inner cylinder 112 of the coal drying apparatus 110 is pulverized coal 2a (particle size: 100 μm) generated as the low-grade coal 1 is dried. ) And water vapor from above the shooter 114 through the exhaust line 116 to the cyclone separator 117 to separate the pulverized coal 2a, and then to the circulation line 118. After cooling and separating and removing the water 13, most (about 85%) of the water 13 is returned to the inert gas supply line 115 and sent again into the inner cylinder 112 together with new inert gas 12. While being fed and reused, a part (about 15%) is fed to the combustion furnace 127 of the coal carbonization device 120 via the extraction line 128.

  The dry coal 2 (about 150 to 200 ° C.) supplied to the hopper 121 of the coal carbonization device 120 is fed into the inner cylinder (main body trunk) 122, and with the rotation of the inner cylinder 122, The heated gas 17 supplied from the combustion furnace 127 to the outer cylinder (jacket) 123 through the heated gas supply line 125 by moving from one end side to the other end side of the inner cylinder 122 while being stirred. (About 1000 to 1100 ° C.) is uniformly heated and distilled (350 to 450 ° C.) to become dry-distilled coal 3 (average particle size: around 5 mm), and is supplied into the hopper 131 of the cooling device 130 via the shooter 124. The

  The dry distillation gas 14 (about 350 to 450 ° C.) generated by dry distillation in the inner cylinder 122 of the coal dry distillation apparatus 120 is sent to the combustion furnace 127 from above the shooter 124 through the exhaust line 126. And is burned together with the inert gas 12 (including carbon monoxide) and the air 15 (the auxiliary combustor 16 as required) and used to generate the heated gas 17.

  The dry-distilled coal 3 (350 to 450 ° C.) supplied to the hopper 131 of the cooling device 130 is fed into the inner cylinder (main body trunk) 132 and stirred as the inner cylinder 132 rotates. However, by moving from one end side to the other end side of the inner cylinder 132, the shooter 134 is cooled evenly by the cooling water 18 showered in the inner cylinder 132 (about 50 to 60 ° C.). To the carbonized coal transfer line 139 and supplied from above into the tower main body 141 of the deactivation apparatus 140.

  The cooling water 18 showered in the inner cylinder 132 of the cooling device 130 is vaporized as the carbonized coal 3 is cooled, and is sent out of the system as steam 20 from above the shooter 134. .

  The dry distillation coal 3 (about 50 to 60 ° C.) supplied from the upper part of the tower main body 141 of the deactivation processing apparatus 140 has an active point (radical) generated by dry distillation in the air supply line 142. By reacting with the oxygen in the air 15 fed from the air blower 142a, the deactivation treatment is performed, and the reformed coal 4 (average particle size: around 5 mm) is formed, and the kneading device 151 is formed from the lower part of the tower body 141. To be sent to.

  The exhaust air 19 (about 50 to 70 ° C.) used for the deactivation treatment of the dry distillation coal 3 inside the tower main body 141 of the deactivation treatment apparatus 140 is fine powder generated by the deactivation treatment. It is fed to the cyclone separator 144 through the exhaust air line 143 together with the charcoal 4a (particle size: 100 μm or less), and the pulverized coal 4a is separated and then discharged out of the system.

  The reformed coal 4 (about 30 ° C.) fed to the kneading device 151 is kneaded together with the binder 5 and the water 6, then fed to the molding device 152, and compression molded. It becomes cast charcoal 7.

Thus, in producing the coal 7 from the low-grade coal 1, when the dry coal 2 is dry-distilled, a trace amount of a mercury-based material gas such as HgS or HgCl _{2 is} contained in the dry distillation gas 14. It will be included.

  Here, in the coal kiln 120 of the rotary kiln type as described above, a portion of the inner cylinder 122 that protrudes from the outer cylinder 123 without being covered by the outer cylinder 123 and is not heated by the heated gas 17 ( The other end side in the axial direction) causes a decrease in temperature. For this reason, conventionally, the portion of the inner cylinder 122 that is not covered by the outer cylinder 123 and that is not heated by the heated gas 17 (on the other end side in the axial direction) protrudes from the outer cylinder 123. The mercury-based substance was adsorbed again, and the mercury concentration in the dry distillation coal 3 sent from the other end of the inner cylinder 122 was increased.

  The reformed coal production facility 100 according to this embodiment made in view of such a problem further operates as follows in order to suppress an increase in the mercury concentration in the dry distillation coal 3.

  The pulverized coal 4a (particle size: 100 μm or less) separated and collected by the cyclone separator 144 of the deactivation processing device 140 is transferred from below the cyclone separator 144 to the hopper 173 via the pulverized coal transport device 171. The amount of the dry carbonized coal 3 fed from the other end side of the inner cylinder 122 of the coal dry distillation device 120 by the feeder 174, that is, the amount of the dry carbonized coal 3 dropped from the shooter 124 is fed. The dry coal 2 is supplied into the hopper 121 of the coal dry distillation apparatus 120 via the conveyor 175 so that the amount becomes 1 to 10% by weight (more preferably 3 to 5% by weight).

  Here, when the amount of the pulverized coal 4a supplied from the cyclone separator 144 to the hopper 173 increases, the pulverized coal transfer device is configured to recover the excess pulverized coal 4a into the recovery container 172. 171 is temporarily activated in the reverse direction.

Thus, the pulverized coal 4a supplied into the hopper 121 of the coal carbonization device 120 is fed into the inner cylinder 122 together with the dry coal 2 as shown in FIG. As described above, the dry charcoal 2 moves from the one end side of the inner cylinder 122 to the other end side while floating in the inner cylinder 122 as described above. 1000 to 1100 ° C.) is uniformly heated to dry distillation (350 to 450 ° C.) to become dry distillation coal 3, and the dry distillation gas 14 containing a trace amount of a mercury-based material 23 gas such as HgS or HgCl ₂ is generated.

  And the pulverized coal 4a and the dry-distilled coal 3 move to the other end side in the inner cylinder 122, that is, located in a portion not heated by the heated gas 17, the pulverized coal 4a and the dry-distilled coal 3 When the temperature is lowered, the mercury-based material 23 in the dry distillation gas 14 has a particle size of the pulverized coal 4a (100 μm or less) much smaller than that of the dry distillation coal 3 (around 5 mm), and per unit weight. Since the surface area of the pulverized coal 4 a is much larger than that of the carbonized coal 3, most of the surface is adsorbed to the pulverized coal 4 a rather than the carbonized coal 3.

  For this reason, as for the said carbonized carbon 3 sent out from the said shooter 124 of the said coal carbonization apparatus 120, the raise of mercury concentration comes to be suppressed.

  On the other hand, the pulverized coal 4a having adsorbed the mercury-based material 23, together with the dry distillation gas 14, from above the shooter 124 of the coal dry distillation device 120 through the exhaust line 126, as shown in FIG. As described above, the heated gas 17 is combusted together with the inert gas 12 (including carbon monoxide) and the air 15 (the auxiliary combustor 16 as necessary). Used to generate

At this time, the mercury-based material 23 such as HgS and HgCl ₂ adsorbed on the pulverized coal 4a is present as gaseous Hg in the heated gas 17 (about 1000 to 1100 ° C.) along with the combustion. To come.

  And it is fed into the outer cylinder 123 of the coal drying device 120 from the combustion furnace 127 via the heated gas supply line 125, so that the dry coal 2 in the inner cylinder 122 is heated by dry distillation. The used exhaust gas 17a of the heated gas 17 is discharged from the outer cylinder 123 to the exhaust gas line 161, cooled by the capacitor 118a (about 350 ° C.), and then denitrated through the delivery blower 161a. To the device 162.

  The exhaust gas 17a fed to the denitration device 162 is sprayed with an aqueous ammonium chloride solution 21 so that nitrogen oxides such as nitrogen monoxide are replaced with nitrogen gas, and mercury is replaced with mercury chloride. (See the following formulas (1) and (2)).

4NO + 4NH ₃ + O ₂ → 4N ₂ + 6H ₂ O (1)
Hg + 1 / 2O ₂ + 2HCl → HgCl + 2H ₂ O (2)

  Subsequently, the exhaust gas 17 a is supplied to the desulfurization device 164 after dust and the like are separated and removed by the electric dust collector 163.

  The exhaust gas 17a fed to the desulfurizer 164 is sprayed with a calcium carbonate slurry 22 so that the mercury chloride dissolves in water and is recovered for post-treatment, and sulfur oxides such as sulfur dioxide. Is recovered by replacing with calcium sulfate or the like (see the following formulas (3) to (5)), and then discharged out of the system.

HgCl + H ₂ O → HgClaq (3)
SO ₂ + CaCO ₃ + 1 / 2H ₂ O → CaSO ₃ · 1 / 2H ₂ O + CO ₂ (4)
CaSO ₃ · 1 / 2H ₂ O + 1 / 2O ₂ + 3 / 2H ₂ O → CaSO ₄ · 2H ₂ O (5)

  That is, in the present embodiment, 1 to 10 weights with respect to the amount of the carbonized carbon 3 generated by the coal carbonization device 120, that is, the amount of the carbonized coal 3 delivered from the other end side of the inner cylinder 122. % (More preferably 3 to 5% by weight) by supplying the pulverized coal 4a (particle size: 100 μm or less) into the inner cylinder 122, thereby the mercury system in the dry distillation gas 14 More substance 23 is adsorbed on the pulverized coal 4a than on the carbonized coal 3, and the pulverized coal 4a is separated from the carbonized coal 3 together with the carbonized gas 14 and discharged.

  Therefore, according to the present embodiment, an increase in the mercury concentration in the produced dry coal 3 can be suppressed.

  Further, since the pulverized coal 4a of the unnecessary material separated and recovered from the exhaust air 19 sent from the inside of the tower main body 141 of the deactivation processing device 140 is used, the mercury concentration in the dry distillation coal 3 is used. Can be easily controlled at a very low cost.

  The particle size of the pulverized coal supplied into the inner cylinder 122 of the coal carbonization device 120 needs to be 100 μm or less (size that passes through a 100 μm square mesh). This is because if it exceeds 100 μm, it will be difficult to separate and discharge the pulverized coal from the carbonized coal 3 together with the carbonized gas 14. On the other hand, the lower limit value of the particle size of the pulverized coal is not particularly limited. However, if it is less than 10 μm, it is not preferable because it is practically difficult.

  Further, the amount of pulverized coal supplied into the inner cylinder 122 of the coal carbonization device 120 is relative to the amount of the carbonized coal 3 sent from the other end side of the inner cylinder 122 of the coal carbonization device 120. It is necessary to be 1 to 10% by weight (more preferably 3 to 5% by weight). This is because if the amount is less than 1% by weight, the mercury-based material 23 in the dry distillation gas 14 cannot be sufficiently removed by adsorption, and if the amount exceeds 10% by weight, the mercury-based material 23 in the dry distillation gas 14 is insufficient. This is because the required amount for the adsorption removal of the water is greatly exceeded.

<Second Embodiment>
A second embodiment of a coal carbonization apparatus according to the present invention and a modified coal production facility using the same will be described with reference to FIGS. In addition, about the part similar to embodiment mentioned above, the description similar to the description in embodiment mentioned above is abbreviate | omitted by using the code | symbol similar to the code | symbol used in description of embodiment mentioned above.

  As shown in FIG. 3, one end side (base end side) of the pulverized coal feed pipe 275 is connected to the distal end side of the feeder 174. A carrier gas supply line 276 for supplying an inert gas 12 such as nitrogen gas is connected to a connecting portion between the front end side of the feeder 174 and the pulverized coal supply pipe 275. The gas delivery unit of the desulfurizer 164 communicates outside the system and is connected to the carrier gas feed line 276 through a return line 277 having a return blower 277a. The other end side (front end side) of the pulverized coal feed pipe 275 is inserted into the other end side of the inner cylinder 122 of the coal dry distillation apparatus 120.

  And, as shown in FIG. 4, the other end (tip) of the pulverized coal feed pipe 275 is closer to the other end that causes a temperature drop than the center in the axial direction inside the inner cylinder 122 of the coal dry distillation apparatus 120, That is, it is located at the boundary portion B on the other end side between the portion covered with the outer cylinder 123 and heated with the heating gas 17 and the portion not covered with the outer cylinder 123 and not heated with the heating gas 17. Yes.

  In the present embodiment, the pulverized coal transport device 171, the recovery container 172, the hopper 173, the feeder 174, the pulverized coal feed pipe 275, the carrier gas feed line 276, the return line 276, etc. A pulverized coal supply device 270 which is pulverized coal supply means is configured.

  In the reformed coal production facility 200 according to this embodiment provided with such a pulverized coal supply device 270, the central operation is performed as in the case of the modified coal production facility 100 of the first embodiment described above. By making it generate, the formed charcoal 7 can be produced from the low-grade coal 1.

  Then, the exhaust gas 17a discharged from the desulfurization device 164 is supplied to the carrier gas supply line 276 together with the inert gas 12 by the return blower 277a of the return line 277, and the feeder 174 supplies the exhaust gas 17a. The pulverized coal 4a (particle size: 100 μm or less) in the hopper 173 is 1 to 10% by weight with respect to the amount of the carbonized coal 3 sent from the other end side of the inner cylinder 122 of the coal carbonization device 120 ( When it is fed to one end side (base end side) of the pulverized coal feed pipe 275 so that the amount is preferably 3 to 5% by weight), the pulverized coal 4a becomes the exhaust gas 17a and the inert gas 12 The carrier gas 24 is used to air-flow the inside of the pulverized coal feed pipe 275 toward the other end side (front end side), and the front of the coal dry distillation apparatus 120 in the inner cylinder 122 The boundary portion B, is fed without being heated by the heating gas 17.

  Thus, the pulverized coal 4a supplied to the boundary portion B without being heated in the inner cylinder 122 of the coal carbonization apparatus 120 moves in the inner cylinder 122 from one end side to the other end side and is heated. Since it is located in the boundary portion B at a temperature (about 50 ° C.) much lower than the carbonized carbon 3 (about 350 to 450 ° C.), the mercury-based material 23 in the carbonized gas 14 is The pulverized coal 4 a is more actively adsorbed than the charcoal 3.

  For this reason, the carbonized coal 3 delivered from the shooter 124 of the coal carbonization device 120 is further designed to suppress the increase in mercury concentration than in the embodiment described above.

  Therefore, according to the present embodiment, it is possible to further suppress the increase in the mercury concentration in the dry-distilled coal 3 to be generated as compared with the case of the above-described embodiment.

<Third embodiment>
A third embodiment of a coal carbonization apparatus according to the present invention and a modified coal production facility using the same will be described with reference to FIG. In addition, about the part similar to embodiment mentioned above, the description similar to the description in embodiment mentioned above is abbreviate | omitted by using the code | symbol similar to the code | symbol used in description of embodiment mentioned above.

  As shown in FIG. 5, in the middle of the carbonized coal transport line 139, a carbonized coal sorting line 371 for separating a part of the carbonized coal 3 transported by the carbonized coal transport line 139 is connected. Yes. The carbonized coal sorting line 371 communicates with a carbonized coal transporting device 372 that transports the carbonized coal 3 separated by the carbonized coal sorting line 371. One side (left side in FIG. 5) of the carbonized carbon conveying device 372 communicates with the carbonized carbon coal conveying line 139 via the carbonized carbon return line 373.

  The other side (the right side in FIG. 5) of the carbonized carbon conveying device 372 communicates with a hopper 374 that receives the carbonized carbon 3. A lower portion of the hopper 374 is connected to a proximal end side of a feeder 375 for quantitatively feeding the carbonized carbon 3 in the hopper 374. The front end side of the feeder 375 communicates with a receiving portion of a pulverizer 376 that finely pulverizes the carbonized carbon 3 (particle diameter: 100 μm or less). The delivery unit of the pulverizer 376 communicates with the receiving port of the hopper 173 via a conveyor 376.

  In the present embodiment, the pulverized coal production apparatus 370 is configured by the dry distillation coal sorting line 371, the dry distillation coal transfer device 372, the dry distillation coal return line 373, the hopper 374, the feeder 375, the pulverization device 376, and the like. The pulverized coal supply unit is configured by the pulverized coal supply device 270, the pulverized coal production device 370, and the like.

  In the modified coal production facility 300 according to the present embodiment in which pulverized coal supply means is configured by such a pulverized coal supply device 170 and the pulverized coal production device 370, the modified coal production of the first embodiment described above. As with the case of the facility 100, the coal is produced from the low-grade coal 1 by producing a central operation.

  When the amount of the pulverized coal 2a supplied from the cyclone separator 144 of the inactivation processing device 140 to the hopper 173 via the pulverized coal transport device 171 is insufficient, the coal is transported on the dry distillation coal transport line 139. A part of the dry carbonized coal 3 is separated by the dry carbonized coal sorting line 371 and supplied to the hopper 374 via the dry carbonized coal conveying device 372, and quantitatively fed into the grinding device 376 by the feeder 375. By feeding them one by one, the carbonized carbon 3 is finely pulverized (particle size: 100 μm or less) to form pulverized coal 3a, which is supplied to the hopper 173.

  At this time, when the charcoal 3, 3a supplied into the hoppers 173, 374 becomes excessive, the dry-distilled coal 3 separated from the dry-distilled coal conveyance line 139 is transferred to the dry-distilled coal conveyance line 139. The carbonized carbon conveying device 372 is operated in the reverse direction so as to return via the carbonized carbon return line 373.

  Thereby, even if the pulverized coal 3a recovered by the cyclone separator 144 of the inactivation processing device 140 is reduced, it is always necessary and sufficient in the inner cylinder 122 of the coal dry distillation device 120. The pulverized coal 3a, 4a can be supplied.

  Therefore, according to the present embodiment, it is possible to obtain the same effect as in the above-described embodiment, and it is possible to suppress an increase in mercury concentration in the dry distillation coal 3 as compared with the above-described embodiment. Can be carried out more stably.

<Fourth embodiment>
A fourth embodiment of a coal carbonization apparatus according to the present invention and a modified coal production facility using the same will be described with reference to FIG. In addition, about the part similar to embodiment mentioned above, the description similar to the description in embodiment mentioned above is abbreviate | omitted by using the code | symbol similar to the code | symbol used in description of embodiment mentioned above.

  As shown in FIG. 6, below the cyclone separator 117 of the coal drying device 110, the pulverized coal 2a separated from the inert gas 12 is communicated to a pulverized coal transport device 471 that carries out the cyclone separator 117. doing. One side (left side in FIG. 6) of the pulverized coal conveying device 471 is in communication with a recovery container 472 that recovers the pulverized coal 2a. The other side (right side in FIG. 6) of the pulverized coal conveying device 471 is in communication with a hopper 473 that receives the pulverized coal 2a. The lower part of the hopper 473 is connected to a proximal end side of a feeder 474 for quantitatively sending the pulverized coal 2a in the hopper 473. The front end side of the feeder 474 communicates with the dry coal conveyance line 119 of the coal drying device 110.

  In the present embodiment, the pulverized coal supply device 470 is configured by the pulverized coal transport device 471, the collection container 472, the hopper 473, the feeder 474, and the like, and the pulverized coal supply devices 270 and 470, the pulverized coal. The pulverized coal supply means is constituted by the manufacturing apparatus 370 and the like.

  In the modified coal production facility 400 according to the present embodiment in which the pulverized coal supply unit is configured by the pulverized coal supply devices 270 and 470, the pulverized coal production device 370, and the like, the modification of the first embodiment described above. As with the case of the coal production facility 100, the coal-fired coal 7 can be produced from the low-grade coal 1 by generating a central operation.

  Then, the pulverized coal 2a (particle size: 100 μm or less) separated and collected by the cyclone separator 117 of the coal drying device 110 is supplied to the hopper 473 via the pulverized coal conveying device 471, and the feeder 474 A fixed amount is supplied to the dry coal conveyance line 119 of the coal drying device 110, and the dry coal 2 is supplied together with the dry coal 2 from the hopper 121 of the coal carbonization device 120 into the inner cylinder 122, and into the inner cylinder 122. The total amount with the supply amount of the pulverized coal 2a is 1 to 10% by weight (preferably 3 to 5%) with respect to the amount of the carbonized coal 3 sent from the other end side of the inner cylinder 122 of the coal carbonization device 120. The pulverized coal 3a, 4a is quantitatively fed by the feeder 174 so that the amount of the pulverized coal feed pipe 27 is increased by the carrier gas 24. Supplied into the inner tube 122 of the coal dry distillation apparatus 120 via the.

  When the amount of the pulverized coal 2a supplied from the cyclone separator 117 to the hopper 473 is increased, the pulverized coal transfer device 471 is configured to collect the excess pulverized coal 2a in the collection container 472. Is temporarily operated in the reverse direction.

  In other words, in the present embodiment, the pulverized coal 2a generated by drying the low-grade coal 1 in the coal drying device 110 and separated and recovered from the inert gas 12 is also used in the dry distillation coal 3. In this way, the increase in mercury concentration in the atmosphere was controlled.

  Therefore, according to the present embodiment, it is possible to obtain the same effect as that of the above-described embodiment, and a part of the dry-distilled coal 3 conveyed by the dry-distilled coal conveyance line 139 is separated. Since the amount of the pulverized coal 3a that is taken and pulverized and replenished by the pulverizing device 376 can be reduced, the amount of the formed coal 7 generated is increased as compared with the case of the third embodiment described above. be able to.

<Fifth embodiment>
A fifth embodiment of a coal carbonization apparatus and a modified coal production facility using the same according to the present invention will be described with reference to FIG. In addition, about the part similar to embodiment mentioned above, the description similar to the description in embodiment mentioned above is abbreviate | omitted by using the code | symbol similar to the code | symbol used in description of embodiment mentioned above.

  As shown in FIG. 7, an exhaust nozzle 529 for sending the dry distillation gas 14 from the other end side of the inner cylinder 122 is disposed inside the shooter 124 of the coal dry distillation apparatus 120. The exhaust nozzle 529 has a base end side (one end side) connected to the base end side (one end side) of the exhaust line 126, and a tip (other end) receiving port 529 a is the other end side of the inner cylinder 122. The uppermost position DH of the opening (communication port with the shooter 124) 122a and the lowermost position DL of the opening (communication port with the shooter 124) 122a on the other end side of the inner cylinder 122 are present. It arrange | positions so that it may be located between the surface position CF of the layer of the carbonized carbon 3.

  In the modified coal production facility 500 according to this embodiment provided with the coal carbonization device 120 having such an exhaust nozzle 529, the center is the same as in the case of the modified coal production facility 100 of the first embodiment described above. By causing the operation to become, the coal char 7 can be produced from the low-grade coal 1.

  At this time, since the receiving port 529a of the exhaust nozzle 529 is located between the uppermost position DH and the surface position CF, the pulverized coal 2a to 4a floating in the inner cylinder 122 is Since the inlet of the exhaust line 126 through which the dry distillation gas 14 circulates at a speed higher than the flow speed in the inner cylinder 122 can be brought close to the inner cylinder 122, the dry distillation coal 3 that falls in the shooter 124 is accompanied. The said pulverized coal 2a-4a which can end up can be reduced.

  Therefore, according to the present embodiment, it is possible to obtain the same effect as in the above-described embodiment, and it is possible to suppress an increase in mercury concentration in the dry distillation coal 3 as compared with the above-described embodiment. Can be performed more reliably.

<Sixth embodiment>
A sixth embodiment of a coal carbonization apparatus and a modified coal production facility using the same according to the present invention will be described with reference to FIG. In addition, about the part similar to embodiment mentioned above, the description similar to the description in embodiment mentioned above is abbreviate | omitted by using the code | symbol similar to the code | symbol used in description of embodiment mentioned above.

  As shown in FIG. 8, the gas delivery unit of the denitration device 162 communicates with a gas receiving unit of a desulfurization device 663 that sprays calcium hydroxide slurry 25 onto the exhaust gas 17a. The sending part of the desulfurization device 663 communicates with a receiving part of a bag filter 664 that separates and removes dust and the like in the exhaust gas 17a. The sending section of the bug filter 664 communicates outside the system. An activated carbon injection device 665 for injecting activated carbon 26 into the exhaust gas 17a is connected between the desulfurization device 663 and the bag filter 664.

  That is, in the modified coal production equipment 100, 200, 300, 400, 500 according to the above-described embodiment, the aqueous ammonia chloride 21 is sprayed into the exhaust gas 17a by the denitration device 162 to generate nitrogen oxides such as nitrogen monoxide. After substituting with nitrogen gas (see the above formula (1)) and replacing mercury with mercury chloride (see the above formula (2)), the dust collector 163 separates and removes dust and the like, and then the desulfurizer 164 In the exhaust gas 17a, the calcium carbonate slurry 22 is sprayed to dissolve and recover the mercury chloride in water (see the above formula (3)), and the sulfur oxide such as sulfur dioxide is replaced with calcium sulfate and recovered. The case where the exhaust gas treatment device 160 (wet desulfurization method) is applied has been described (see the above formulas (4) and (5)). In the present embodiment, the denitration device 162 is used. The ammonia chloride aqueous solution 21 is sprayed into the gas 17a to replace nitrogen oxides such as nitrogen monoxide with nitrogen gas (see the above formula (1)), and mercury is replaced with mercury chloride (see the above formula (2)). ) After that, the desulfurizer 663 sprays calcium hydroxide slurry 25 into the exhaust gas 17a to replace sulfur oxides such as sulfur dioxide with calcium sulfate or the like (see the following formulas (6) and (7)). The activated carbon injection device 665 injects the activated carbon 26 into the exhaust gas 17a to adsorb the mercury chloride on the activated carbon 26, and then the bag filter 664 separates and recovers the calcium sulfate and the activated carbon 26. Desulfurization method) is applied.

SO ₂ + Ca (OH) ₂ → CaSO ₃ .1 / 2H ₂ O + 1 / 2H ₂ O (6)
CaSO ₃ · 1 / 2H ₂ O + 1 / 2O ₂ + 3 / 2H ₂ O → CaSO ₄ · 2H ₂ O (7)

  Therefore, according to the present embodiment, it is possible to obtain the same effect as that of the above-described embodiment.

<Other embodiments>
In the third embodiment described above, the case of the modified coal production facility 300 in which pulverized coal supply means is configured by the pulverized coal supply device 270 and the pulverized coal production device 370 has been described. As an embodiment, for example, the pulverized coal supply device 270 is omitted, and the pulverized coal 3a obtained by the pulverized coal production device 370 is placed in the inner cylinder 122 of the coal dry distillation device 120 in the pulverized coal feed pipe. It is also possible to configure the pulverized coal supply means so that it can be supplied via 275 or the hopper 111.

  In the fourth embodiment described above, the case of the modified coal production facility 400 in which the pulverized coal supply unit is configured by the pulverized coal supply devices 270 and 470 and the pulverized coal production device 370 has been described. As another embodiment, for example, the pulverized coal production apparatus 370 is omitted, and the pulverized coal 2a and 4a obtained by the pulverized coal supply apparatuses 270 and 470 are placed in the inner cylinder 122 of the coal dry distillation apparatus 120. The pulverized coal supply means is configured so that it can be supplied via the pulverized coal feed pipe 275 and the hopper 111, or the pulverized coal supply device 270 is omitted, and the pulverized coal supply device 470 and the pulverized coal production are omitted. The pulverized coal 2a, 4a obtained by the apparatus 370 is supplied into the inner cylinder 122 of the coal dry distillation apparatus 120 through the pulverized coal feed pipe 275 and the hopper 111. The pulverized coal supply means is configured so that the pulverized coal supply device 270 and the pulverized coal production device 370 are both omitted, and the pulverized coal 2a obtained by the pulverized coal supply device 470 is used. It is also possible to configure pulverized coal supply means so that the pulverized coal feed pipe 275 and the hopper 111 can be supplied into the inner cylinder 122 of the coal dry distillation apparatus 120.

  In the sixth embodiment described above, the activated carbon injection device 665 is connected between the desulfurization device 663 and the bag filter 664, so that the desulfurization device 663 uses the calcium hydroxide slurry in the exhaust gas 17a. After the sulfur oxide such as sulfur dioxide is replaced with calcium sulfate or the like by spraying 25, activated carbon 26 is injected into the exhaust gas 17a by the activated carbon injection device 665 to adsorb the mercury chloride to the activated carbon 26, The calcium sulfate and the activated carbon 26 are separated and recovered by the bag filter 664. However, as another embodiment, for example, the activated carbon injection device 665 is connected between the denitration device 162 and the desulfurization device 663. Thus, the activated carbon injection device 665 injects the activated carbon 26 into the exhaust gas 17a and applies the mercury chloride. After adsorbing to the activated carbon 26, the desulfurization device 663 sprays calcium hydroxide slurry 25 into the exhaust gas 17a to replace sulfur oxides such as sulfur dioxide with calcium sulfate, and then the bag filter 664 uses the calcium sulfate. The activated carbon 26 is separated and recovered, or the activated carbon injection device 665 is connected to the desulfurization device 663, so that the calcium hydroxide slurry 25 is sprayed into the exhaust gas 17a by the desulfurization device 663 and sulfur dioxide. In addition, the activated carbon injection device 665 injects activated carbon 26 into the exhaust gas 17a to adsorb the mercury chloride on the activated carbon 26, and the bag filter 664 causes the sulfuric acid to replace the sulfur oxide such as calcium sulfate. It is also possible to separate and collect calcium and the activated carbon 26.

  The coal carbonization apparatus according to the present invention and the modified coal production facility using the same can suppress the increase in the mercury concentration in the produced carbonized coal, and thus can be used extremely beneficially industrially.

1 Low grade coal (low quality coal)
2 dry coal 2a pulverized coal 3 dry coal 3a pulverized coal 4 reformed coal 4a pulverized coal 5 binder 6 water 7 formed coal 11 steam 12 inert gas 13 water 14 dry distillation gas 15 air 16 auxiliary combustor 17 heating gas 17a exhaust gas 18 cooling water 19 Exhaust Air 20 Water Vapor 21 Ammonium Chloride Aqueous Solution 22 Calcium Carbonate Slurry 23 Mercury Substance 24 Carrier Gas 25 Calcium Hydroxide Slurry 26 Activated Carbon 100 Modified Coal Production Equipment 110 Coal Drying Equipment 111 Hopper 112 Inner Cylinder (Body Body)
113 Outer tube (jacket)
114 Shutter 115 Inert gas feed line 116 Exhaust line 117 Cyclone separator 118 Circulation line 118a Condenser 119 Dry coal transport line 120 Coal distillation unit 121 Hopper 122 Inner cylinder (main body cylinder)
122a Opening 123 Outer cylinder (jacket)
124 Shuter 125 Heated gas supply line 126 Exhaust line 127 Combustion furnace 128 Extraction line 130 Cooling device 131 Hopper 132 Inner cylinder 133 Outer cylinder 134 Shuta 139 Carbonated carbon transfer line 140 Deactivation treatment apparatus 141 Tower body 142 Air supply line 142a Air blower 143 Exhaust air line 144 Cyclone separator 150 Coal production apparatus 151 Kneading apparatus 152 Molding apparatus 160 Exhaust gas treatment apparatus 161 Exhaust gas line 161a Delivery blower 161b Capacitor 162 Denitration apparatus 163 Electric dust collector 164 Desulfurization apparatus 170 Pulverized coal supply apparatus 171 172 Recovery container 173 Hopper 174 Feeder 175 Conveyor 200 Modified coal production facility 270 Pulverized coal supply device 275 Pulverized coal feed pipe 276 Carrier gas Feed line 277 Return line 277a Return blower 300 Modified coal production facility 370 Pulverized coal production device 371 Dry distillation coal preparatory line 372 Dry distillation coal transfer device 373 Dry distillation coal return line 374 Hopper 375 Feeder 376 Pulverizer 400 Modified coal 470 Pulverized coal Supply device 471 Recovery container 472 Recovery container 473 Hopper 474 Feeder 500 Reformed coal production facility 529 Exhaust nozzle 529a Inlet 660 Exhaust gas treatment device 663 Desulfurization device 664 Bag filter 665 Activated carbon injection device

Claims (9)

An inner cylinder is rotatably supported inside the outer cylinder, heated gas is supplied into the outer cylinder, and coal is supplied from one end side of the inner cylinder to rotate the inner cylinder. The rotary kiln-type coal carbonization device that heats and dry-distills while stirring while moving the coal from one end side to the other end side of the inner cylinder, and sends out the carbonized coal and the carbonized gas from the other end side of the inner cylinder In
Pulverized coal supply for supplying pulverized coal having a particle size of 100 μm or less to the inside of the inner cylinder so that the amount is 1 to 10% by weight with respect to the amount of the carbonized coal sent from the other end side of the inner cylinder. A coal carbonization apparatus characterized by comprising means. In the coal carbonization apparatus according to claim 1,
The coal pulverization apparatus, wherein the pulverized coal supply means supplies the pulverized coal closer to the other end where the temperature lowers than the center in the axial direction inside the inner cylinder. In the coal dry distillation apparatus according to claim 1 or 2,
The tip is positioned between the uppermost position of the opening on the other end side of the inner cylinder and the surface position of the layer of the carbonized coal existing at the lowermost position of the opening on the other end side of the inner cylinder. A coal carbonization apparatus characterized by being provided with an exhaust nozzle for delivering the carbonization gas from the other end side of the inner cylinder. Coal drying means for drying the coal;
A coal reforming apparatus according to any one of claims 1 to 3, which comprises carbonizing the dry coal dried by the coal drying means. In the modified coal production facility according to claim 4,
A reformed coal production facility comprising: a carbonized coal cooling means for cooling the carbonized carbon that has been carbonized by the coal carbonization device. In the modified coal production facility according to claim 5,
A reformed coal production facility comprising: an inactivation treatment means for inactivating the dry-distilled coal cooled by the dry-distilled coal cooling means with an oxygen-containing gas. In the modified coal production facility according to claim 4,
The refined coal production facility, wherein the pulverized coal supply means supplies pulverized coal that is generated and recovered as the coal is dried by the coal drying means. In the modified coal production facility according to claim 5,
The modified coal production facility, wherein the pulverized coal supply means supplies pulverized coal obtained by separating and finely pulverizing a part of the dry distillation coal cooled by the dry distillation coal cooling means. In the modified coal production facility according to claim 6,
The refined coal production facility, wherein the pulverized coal supply means supplies pulverized coal recovered from the oxygen-containing gas obtained by inactivating the dry-distilled coal by the inactivation treatment means.

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