JP5558707B2 - Carbonization furnace and carbonization system - Google Patents

Description

The present invention relates to a carbonization furnace for carbonizing an object to be carbide by heating at a high temperature in a furnace in which air is replaced with an inert gas by sealing between a lid and an inlet of a furnace body, and a plurality of these carbonization furnaces are linked. The carbonization system is designed to operate continuously .

  Conventionally, a technique shown in FIG. 5 is known as this type of carbonization furnace (see, for example, Patent Document 1). This carbonization furnace 100 is sealed between the lid 101 and the inlet 103 of the furnace body 102 by a heat-resistant packing 104 and is piped so that air can be replaced with an inert gas. It can be heated at a high temperature.

According to the carbonization furnace 100, since air can be heated at a high temperature after completely replacing the inert gas, the hermeticity between the lid 101 and the inlet 103 of the furnace body 102 is completely maintained. In this case, the carbonized material is carbonized without being oxidized, and charcoal having no ash on the surface can be produced.
JP 2004-210964 A

  However, in the conventional carbonization furnace 100, a tar content is generated as a gas from a carbonized material such as bamboo in the furnace at the time of temperature rise, and the tar content is sealed between the lid 101 and the inlet 103 of the furnace body 102. It adheres to the place of the heat resistant packing 104 used. In the conventional carbonization furnace 100, when the tar content adheres to and accumulates in the heat-resistant packing 104, the sealing performance between the lid 101 and the inlet 103 of the furnace body 102 is deteriorated. There was a problem that the gap between the furnace body 102 and the charging port 103 was hardened and the lid could not be opened.

  Further, in the conventional carbonization furnace 100, since the gas in the furnace contracts in the furnace when the temperature is lowered, air flows into the furnace from the outside at the heat-resistant packing 104 whose sealing performance is deteriorated. As a result, the oxygen-free state in the furnace replaced with the inert gas is released, the surface and part of the object to be carbonized are oxidized, and the surface of the charcoal becomes charcoal with ash. That is, the conventional carbonization furnace 100 has a problem that the yield is not good in the production of charcoal that is not oxidized and ash does not adhere to the surface of the charcoal, and if the yield is to be improved, the heat-resistant packing 104 must be replaced every time. There was a problem that it had to be troublesome and expensive.

  In addition, since the conventional carbonization furnace 100 has a structure in which the heat-resistant packing 104 is tightly sandwiched between the lid 101 and the charging port 103 of the furnace body 102, the furnace body 102 made of metal such as stainless steel has expanded by heat. In some cases, the lid 101 is pressed and distorted to crack.

  Furthermore, the conventional carbonization furnace 100 has to wait until it is naturally cooled to produce the next charcoal once it is operated, and there is a problem that it is not possible to mass-produce inefficient and stable quality charcoal at low cost. It was.

  Therefore, the problem to be solved by the present invention is that the sealing property between the lid 101 and the charging port 103 of the furnace body 102 is deteriorated, and in some cases, between the lid 101 and the charging port 103 of the furnace body 102. The problem is that the lid cannot be opened due to hardening, the problem that the yield is not good in the production of charcoal that is not oxidized and the ash does not adhere to the surface of the charcoal, and if you want to improve the yield, you must replace the heat-resistant packing 104 every time. It is an object of the present invention to provide a carbonization furnace capable of solving the problem that labor and cost are required and the problem that the furnace body 102 is distorted and cracked by thermal expansion.

  The problem to be solved by the present invention is to provide a carbonization system that can solve the problem that inefficient and stable quality charcoal cannot be mass-produced at low cost.

This invention was made in order to solve the above-mentioned subject, and the invention according to claim 1 is a carbonization furnace for carbonizing a material to be carbide by heating at a high temperature in a furnace in which air is replaced with an inert gas. A furnace body in which an inlet for charging the carbide is formed, a liquid reservoir provided continuously from the periphery of the inlet to the outside of the furnace body, and openable to the inlet of the furnace body Provided with a lid for closing the charging port and sealing the furnace body, so that the edge of the lid is immersed in the sealing liquid stored in the liquid reservoir. The furnace body is configured to be sealed with the charging port, and in consideration of a change in size when the furnace body expands due to heat between the lid and the charging port with the lid closed. The lid is supported after a gap is formed to prevent distortion. It is characterized by having a provided lid support.

  According to invention of Claim 1, it has the structure where the said inlet is covered with the said lid | cover, and the inside of a furnace is completely sealed by immersing the edge of the said lid | cover in sealing liquid. And since heat-resistant packing is not used as the sealing material, the tar content generated as a gas from the carbonized material such as bamboo does not adhere and accumulate in the furnace when the temperature is raised. Therefore, the sealing property between the lid and the furnace body inlet becomes poor, and in some cases, the problem that the gap between the lid and the furnace body is hardened and the lid cannot be opened is solved. it can.

  According to the first aspect of the present invention, even if the gas in the furnace contracts in the furnace when the temperature is lowered, the inside of the furnace is completely sealed by immersing the edge of the lid in the sealing liquid. As a result, air does not flow into the furnace from the outside. Therefore, the problem of poor yield in the production of charcoal that is not oxidized and has no ash on the charcoal surface can be solved. Further, since it is not necessary to replace the heat-resistant packing every time, the problem of labor and cost can be solved.

  Further, according to the invention described in claim 1, since the furnace body is not pressed down by the lid because the gap is present even if the furnace body expands, the furnace body is distorted and cracked by thermal expansion. This problem can be solved.

  The invention according to claim 2 is characterized in that, in claim 1, a stirrer is provided in the furnace body so that the temperature in the furnace body is uniform.

  According to the second aspect of the present invention, since a stirrer is provided in the furnace body and the temperature in the furnace body can be made uniform, more stable charcoal can be obtained.

  A third aspect of the invention is characterized in that, in the first or second aspect, water vapor or carbon dioxide is used instead of the inert gas, and water is used as the sealing liquid.

  According to invention of Claim 3, when using water vapor | steam instead of the said inert gas, since water vapor | steam and the said sealing liquid are the same water components, suppose that the said sealing liquid evaporated and flowed into the furnace. However, it is safe because no unexpected chemical reaction occurs. In addition, since the water that is the sealing liquid may be changed or replenished from time to time, the running cost is extremely low compared to the heat resistant packing. Furthermore, although charcoal is originally porous, by using water vapor, innumerable fine pores can be further formed inside the charcoal, and charcoal adsorption performance can be enhanced.

  According to a fourth aspect of the present invention, the plurality of carbonization furnaces according to any one of the first to third aspects and the combustion chambers of the plurality of carbonization furnaces are connected, and the respective carbonization furnaces are linked in a continuous manner. And a control means for controlling to operate.

  According to invention of Claim 4, manufacture of the next charcoal can be started, without waiting until the furnace once operated becomes normal temperature by shifting the timing of temperature control of a plurality of carbonization furnaces. Moreover, since the combustion chambers are connected, preheating can be used for the production of the next charcoal. Therefore, the problem that inefficient and stable quality charcoal cannot be mass-produced at low cost can be solved.

  According to the present invention, the sealing between the lid and the furnace inlet is excellent, the lid is easily opened and closed and the sealing material is easily maintained, the yield in the production of high quality charcoal is good, the running cost is low, and the heat A carbonization furnace in which the furnace body is not distorted by expansion can be provided.

  Moreover, according to the present invention, it is possible to provide a carbonization system that can efficiently mass-produce charcoal with stable quality at low cost.

1. Hereinafter, specific embodiments to which the present invention is applied will be described in detail with reference to the drawings. The present invention is applied to, for example, a carbonization furnace 1 configured as shown in FIG.

  First, with reference to FIG. 1, the outline of the structure of the carbonization furnace 1 is demonstrated. The carbonization furnace 1 includes a furnace body 10 in which an introduction port 20 for introducing an object to be carbide is formed, a liquid reservoir 11 provided continuously from the peripheral edge 21 of the introduction port 20 toward the outside of the furnace body 10, A lid 30 for closing the inlet 20 to seal the inside of the furnace body 10 is provided between the lid 30 and the inlet 20 with the lid 30 closed. In addition, a lid support 31 provided so that the lid 30 is supported after a gap is formed so that the furnace body 10 is not distorted in consideration of a change in size when the furnace body 10 expands due to heat. It is provided as a main part.

  In addition, when the lid 30 is closed, the carbonization furnace 1 is configured such that the edge 30 of the lid 30 is immersed in the sealing liquid 12 stored in the liquid reservoir 11 so that the lid 30 and the inlet 20 of the furnace body 10 are connected. The structure is hermetically sealed.

  The furnace body 10 of the carbonization furnace 1 is composed of an inner pot 13 made of a refractory metal (for example, SUS310S), a combustion chamber 17 provided outside the inner pot 13, and a metal having a sufficient strength (for example, a steel material). And a heat insulating material 15 sandwiched between the outer wall of the combustion chamber 17 and the outer pot 14. As shown in FIG. 1, the inner hook 13 is in the form of an upper release box, and the upper release portion corresponds to the input port 20. A folded portion 16 is formed by pressing the extension portion of the inner hook 13 from the peripheral edge 21 of the charging port 20 to the outside of the furnace body 10 so that the cross section is U-shaped, and the folded portion 16 defines the outer pot 14. The edge part and a part of side wall are enclosed.

  As shown in FIG. 1, the liquid reservoir 11 is formed so as to have a U-shaped cross section by welding the edge portion of the folded portion 16 and the edge portion of the steel plate obtained by pressing the key die. Has been. Accordingly, the liquid reservoir 11 is provided continuously from the peripheral edge 21 of the charging port 20 toward the outside of the furnace body 10, and can be regarded as a part of the inner pot 13.

  Here, it is assumed that the liquid reservoir 11 described above is provided outside the furnace body 10, but can also be provided inside the furnace body 10. When the liquid reservoir 11 is provided inside the furnace body 10, a groove may be provided between the inner hook 13 and the outer hook 14, and the groove may be used as the liquid reservoir 11. Also in this case, the liquid reservoir 11 is provided continuously from the peripheral edge 21 of the charging port 20 toward the outside of the furnace body 10, and can be regarded as a part of the inner pot 13.

  The lid 30 has a structure in which a heat insulating material 35 is sandwiched between an inner lid 33 made of a heat-resistant metal (for example, SUS310S) having a U-shaped cross section and an outer lid 34 made of a metal having sufficient strength (for example, steel). It has become. The outer lid 34 is substantially the same size as the outer hook 14 in the vertical and horizontal directions.

  The lid 30 is openable and closable. In a state where the lid 30 is closed, the size change of the furnace body 10 due to the expansion is prevented so that the furnace body 10 is not distorted due to thermal expansion of the furnace body 10 between the lid 30 and the inlet 20. A considered gap (2 to 3 cm) is provided, and the lid 30 is supported by the lid support 31 in this state.

  When the sealing liquid 12, for example, water, is injected into the liquid reservoir 11 and the lid 30 is closed, the edge portion 32 of the lid 30 is immersed in the sealing liquid 12 stored in the liquid reservoir 11. The charging port 20 of the furnace body 10 is sealed.

  The combustion chamber 17 can generate heat up to 800 to 1100 ° C. by a burner 41 provided outside the furnace body 10, and the temperature chamber (not shown) and a temperature control device (not shown) The temperature of can be controlled.

  The inner hook 13 is provided with two holes, and pipes are welded to the individual holes via the outer hook 14. One is an inert gas introduction pipe 46 from which an inert gas such as argon, water vapor, carbon dioxide or the like can be injected into the furnace, and the other pipe 43 is filled with inert gas or water vapor. , Used to expel air by injecting carbon dioxide. A pipe port for the pipe for expelling air is provided at the top of the furnace body, and when an inert gas heavier than air is injected, the air is expelled from the furnace through the pipe 43 from above, so that the air in the furnace is inert gas. Can be completely replaced. The pipe 43 is connected to an exhaust gas reservoir tank 44 made of stainless steel provided outside, and serves to send components of bamboo vinegar and wood vinegar that are emitted from the carbonized material to the exhaust gas reservoir 44. Also fulfills.

  The exhaust gas storage tank 44 has a size larger than the capacity of the gas that flows backward when the temperature falls. This is because when the temperature is lowered, the gas in the furnace contracts and the pressure decreases, and the gas accumulated in the exhaust gas storage tank 44 flows back into the furnace, but the capacity of the exhaust gas storage tank 44 is increased and the inert gas injected. This is because if the capacity is increased, the gas flowing backward when the temperature is lowered becomes a gas generated at the time of raising the temperature, an inert gas, or the like, so that oxidation of the object to be carbide due to the backward flow of air can be prevented.

  The lid 30 is provided with a stirrer 42. Since the heat distribution in the furnace can be made uniform by operating the stirrer 42 in the furnace, it is difficult to cause uneven burning on charcoal.

  Further, as shown in FIGS. 2A and 2B, the carbonization furnace 60 may be configured by connecting the carbonization furnaces 1a, 1b, 1c, and 1d with pipes 61, 62, 63, and 64.

  As shown in FIGS. 2A and 2B, the carbonization system 60 includes a combustion chamber 17a of the carbonization furnace 1a connected to combustion chambers 17b and 17d of the carbonization furnaces 1b and 1d via pipes 61 and 64, respectively. The combustion chamber 17c of 1c is connected with the combustion chambers 17b and 17d of the carbonization furnaces 1b and 1d through pipes 62 and 63, respectively.

  In the carbonization system 60, chimneys 45a, 45b, 45c, and 45d are connected to pipes 61, 62, 63, and 64 in a T shape. By appropriately opening and closing partition plates 65 to 76 provided on three sides of the T shape. The flow of heat and smoke to the combustion chambers 17 by the burner 41 can be automatically controlled.

  Next, the operation of the carbonization furnace 1 configured as described above will be described. First, in the carbonization furnace 1, the lid 30 is opened, the article to be carbonized is placed, and the lid 30 is closed. At this time, when the seal liquid 12 is insufficient in the liquid reservoir 11 and the edge portion 32 of the lid 30 is not immersed in the seal liquid 12, the seal liquid 12 is replenished. Further, when the liquid reservoir 11 is contaminated with tar or the like, the liquid reservoir 11 is washed in advance and the sealing liquid 12 is injected.

  Then, an inert gas such as argon, water vapor, carbon dioxide, or the like is injected from the inert gas introduction pipe 46. The amount of inert gas, water vapor, carbon dioxide, or the like to be injected is, for example, about 1 m 3 in consideration of the capacity of the gas that is completely replaced with the air in the furnace and flows backward when the temperature falls. When water vapor is used instead of the inert gas, an amount of water is injected so that the air in the furnace is completely replaced when it becomes water vapor. This water is completely converted into water vapor when the temperature in the furnace reaches 100 ° C. when the temperature is increased during the production of charcoal, and is replaced with air in the furnace, so that the inside of the furnace is filled with water vapor. The air passes through the pipe 43 and is exhausted from the chimney 47 via the exhaust gas storage tank 44.

  Next, the temperature inside the furnace is raised to 400 to 1050 ° C., for example, over a period of 7 hours to 3 days by the temperature control device, and held for 12 hours to 4 days at that temperature, and then naturally cooled. At this time, the lid 30 is kept closed to maintain the airtightness in the furnace. And when the inside of a furnace is naturally cooled to room temperature, the lid | cover 30 will be opened and the completed charcoal will be taken out.

  Here, about the carbonization system 60, when operating the carbonization furnace 1a and the carbonization furnace 1b, for example (FIG. 2A), it controls by the following procedure.

(1) With the partition plates 65 and 66 opened and the partition plate 67 closed, the burner 41a is ignited. By this control, the carbonization furnace 1a is heated and the carbonization furnace 1b is in a preheated state.

(2) With the partition plates 65 and 67 opened and the partition plate 66 closed, the burner 41a is extinguished and the burner 41b is ignited. By this control, the temperature of the carbonization furnace 1a is lowered and the temperature of the carbonization furnace 1b is raised.

  Moreover, about the carbonization system 60, when operating four carbonization furnaces 1a, 1b, 1c, and 1d (FIG. 2B), for example, it controls by the following procedure.

(1) With the partition plates 65, 66, 74, 75 opened and the partition plates 67, 71, 76 closed, the burner 41a is ignited. By this control, the carbonization furnace 1a is heated and the carbonization furnace 1b is in a preheated state.

(2) With the partition plates 65, 67, 69, 70, 75, 76 opened and the partition plates 66, 68, 74 closed, the burner 41a is extinguished and the burner 41b is ignited. By this control, the temperature of the carbonization furnace 1a is lowered, the temperature of the carbonization furnace 1b is raised, and the carbonization furnace 1d is in a preheated state.

(3) With the partition plates 68, 69, 72, 73, 74, 75 opened and the partition plates 70, 71, 76 closed, the burner 41b is extinguished and the burner 41d is ignited. By this control, the temperature of the carbonization furnace 1b is lowered, the temperature of the carbonization furnace 1d is raised, and the carbonization furnace 1c is in a preheated state.

(4) With the partition plates 65, 67, 69, 70, 71, 72 opened and the partition plates 66, 68, 73 closed, the burner 41d is extinguished and the burner 41c is ignited. By this control, the temperature of the carbonization furnace 1d is lowered, the temperature of the carbonization furnace 1c is raised, and the carbonization furnace 1a is in a preheated state.

  According to the carbonization furnace 1, the charging port 20 is covered with the lid 30, and the inside of the furnace is completely sealed by immersing the edge portion 32 of the lid 30 in the sealing liquid 12. And since heat-resistant packing is not used as the sealing material, the tar content generated as a gas from the carbonized material such as bamboo does not adhere and accumulate in the furnace when the temperature is raised. Accordingly, the sealing property between the lid 30 and the charging port 20 of the furnace body 10 is deteriorated, and in some cases, the gap between the lid 30 and the charging port 20 of the furnace body 10 is hardened and the lid cannot be opened. Can be resolved.

  Moreover, according to the carbonization furnace 1, even if the gas in the furnace contracts in the furnace when the temperature is lowered, the inside of the furnace is completely sealed by immersing the edge 32 of the lid 30 in the sealing liquid. Air does not flow into the furnace from the outside. Therefore, the problem of poor yield in the production of charcoal that is not oxidized and has no ash on the charcoal surface can be solved. Further, since it is not necessary to replace the heat-resistant packing every time, the problem of labor and cost can be solved.

  Moreover, according to the carbonization furnace 1, since there is a gap even when the furnace body 10 expands, the furnace body 10 is not pressed down by the lid 30, so the problem that the furnace body 10 is distorted by thermal expansion and cracks can be solved.

  Moreover, according to the carbonization furnace 1, since the stirrer 42 can be provided in the furnace body 10 and the temperature in the furnace body can be made uniform, more stable charcoal 50 can be obtained.

  Further, according to the carbonization furnace 1, when steam is used instead of the inert gas, since the steam and the seal liquid 12 are the same water component, even if the seal liquid 12 evaporates and flows into the furnace 10, There is no unexpected chemical reaction, so safety is high. In addition, since the water that is the sealing liquid may be changed or replenished from time to time, the running cost is extremely low compared to the heat resistant packing. In addition, although charcoal is originally porous, by using water vapor, innumerable fine pores can be formed inside the charcoal 50 and the charcoal 50 adsorption performance can be improved.

Furthermore, according to the carbonization system 60, by shifting the timing of temperature control of the plurality of carbonization furnaces 1, it is possible to start production of the next charcoal 50 without waiting until the furnace once operated reaches room temperature. Moreover, since the combustion chambers are connected, preheating can be used for the production of the next charcoal. Therefore, it is possible to mass-produce the charcoal 50 having a stable and efficient quality at a low cost.
2. Charcoal The present invention is applied to charcoal 50 configured as shown in FIG. 3 or FIG. 4, for example.

(1) Example 1
The charcoal 50 is obtained by using the carbonization furnace 1 and subjecting carbonized materials such as bamboo pieces, wood pieces, eggplants and mandarin oranges to 400 to 1050 ° C. over a period of 7 hours to 3 days while maintaining the hermeticity in the furnace. The temperature is raised and maintained at the temperature for 12 hours to 4 days, and then is generated by natural cooling.

  According to the charcoal 50 of the first embodiment, the object to be carbonized is carbonized in a completely oxygen-free state, so that the problem that the ash on the surface of the charcoal 50 flows into the water and contaminates the water quality can be solved. Further, innumerable fine pores are formed inside the non-oxidized charcoal 50 of Example 1, and the adsorption performance is excellent, so that it is extremely useful as a water purifier.

  In addition, according to the charcoal 50 of Example 1, since the object to be carbonized is carbonized in a completely oxygen-free state, the carbonized object is excellent in brittleness, and the object to be carbonized is carbonized in a form closer to the actual product, which is suitable as an object. .

  FIG. 3 shows an embodiment in which the charcoal 50 is used as an ornamental object. The ornamental object shown in FIG. 3 uses a plum tree as the object to be carbonized, and it is a delicate form before carbonization (for example, plum blossom stamen, pistil, fine root, etc.) by slowly raising the temperature. ) Is retained and carbonized. This object is a plum tree immediately after being removed from the soil, washed with water to be carbonized, heated to 600 ° C. in 16.6 hours using the carbonization furnace 1, and then held at 600 ° C. for 12 hours. Then, it is naturally cooled.

(2) Example 2
The charcoal 50 is obtained by using the carbonization furnace 1 and subjecting the objects to be carbonized such as bamboo pieces, wood pieces, coconuts, and mandarin oranges to 400 to 1050 ° C. over 7 to 15 hours while maintaining the hermeticity in the furnace. The temperature is raised and maintained at the temperature for 12 hours to 4 days, and then is generated by natural cooling. Since the temperature is rapidly increased, a plurality of cuts appear on the surface of the charcoal 50.

  According to the charcoal 50 of Example 2, since the temperature is raised to a high temperature in a short time of 7 hours to 15 hours, a plurality of breaks appear on the surface of the object to be carbide. And since a to-be-carburized material is carbonized in a perfect oxygen-free state, since the expressed cut | interruption is hold | maintained without roundness, it is suitable as an object used for dry mountain water, for example.

  FIG. 4 shows an embodiment in which charcoal 50 is used as an object of dry mountain water. The dry mountain water object shown in FIG. 4 uses Umegasushi as a carbonized material. By raising the temperature in a short time (7 hours), a break appears on the surface, and its form (fine cracks / cracks enter, (A rugged stone-like form) is carbonized without being destroyed. This object is obtained by turning the eelfish immediately after cutting into a carbonized material, raising the temperature to 800 ° C. in 7 hours using the carbonization furnace 1, holding at 800 ° C. for 12 hours, and then naturally cooling.

(3) Example 3
The charcoal 50 is obtained by heating a carbide obtained by hardening bamboo powder into pellets to 400 to 1050 ° C. over 7 to 3 days while maintaining the hermeticity in the furnace. It is produced by natural cooling after being held for 12 hours to 4 days.

  According to the charcoal 50 of the third embodiment, the to-be-carburized material is carbonized in a completely oxygen-free state, so that a non-oxidized charcoal 50 containing no ash is generated. And by giving the feed mixed with the pulverized product of the charcoal 50 to the cultured fish and livestock, it is possible to grow the cultured fish and livestock with good meat quality.

<Evaluation method>
Two types of samples were prepared: a molded product obtained by solidifying bamboo charcoal powder into a pellet and a bamboo charcoal chip.

Pellet 500
Using a carbonization furnace 1, a molded product obtained by hardening bamboo charcoal powder into pellets was heated to 500 ° C. over 13.3 hours while maintaining the hermeticity in the furnace. After holding for 12 hours, charcoal obtained by natural cooling is used as pellet 500.

Pellet 800
Using a carbonization furnace 1, a molded product obtained by hardening bamboo charcoal powder into pellets was heated to 800 ° C. over 23.3 hours while maintaining the hermeticity in the furnace. After holding for 12 hours, charcoal obtained by natural cooling is used as pellets 800.

Chip 500
The bamboo charcoal chip was heated to 500 ° C. over 13.3 hours while maintaining the airtightness in the furnace using the carbonization furnace 1, held at that temperature for 12 hours, and then naturally cooled. The charcoal obtained in this way is used as a chip 500.

Chip 800
The bamboo charcoal chip was heated to 800 ° C. over 23.3 hours using the carbonization furnace 1 while maintaining the hermeticity in the furnace, held at that temperature for 12 hours, and then naturally cooled. The charcoal obtained in this way is used as a chip 800.

  Based on the Japanese Industrial Standards JISM-8812 coal test method, the ignition residue (ash content), volatile content, moisture, and fixed carbon content of the sample were measured. Further, 3 g of the sample was put in a tetra bag, a gas having a constant concentration was injected, and the concentration in the tetra bag after a predetermined time was measured with a gas detector tube.

<Evaluation results>
The measurement results of JISM-8812 are shown in Table 1.
It can be seen from Table 1 that all samples have a small amount of ash, and the sealing property of the carbonization furnace 1 is sufficiently maintained.

The results of the gas adsorption test are shown in Table 2.
From Table 2, it can be seen that all the samples have excellent adsorption performance, and the charcoal obtained by the carbonization furnace 1 is excellent in adsorption performance.

  It should be noted that the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.

FIG. 1 is a schematic view showing a cross section of an embodiment of a carbonization furnace according to the present invention in a state where a lid of the carbonization furnace is closed. It is a side view showing typically one embodiment of the carbonization system concerning the present invention. It is a top view showing typically one embodiment of the carbonization system concerning the present invention. It is a photograph which shows one Embodiment of the charcoal which concerns on this invention. It is a photograph which shows other embodiment of the charcoal which concerns on this invention. It is a conventional carbonization furnace, Comprising: It is a schematic diagram which shows the cross section of the state in which the lid | cover is closed.

1, 1a, 1b, 1c, 1d Carbonization furnace, 10 furnace body, 11 liquid reservoir, 12 sealing liquid, 13 inner pot, 14 outer pot, 15 heat insulating material, 16 folding part, 17 combustion chamber, 20 inlet, 21 peripheral edge , 30 lid, 31 lid support, 32 edge, 33 inner lid, 34 outer lid, 35 heat insulating material, 41, 41a, 41b, 41c, 41d burner, 42 stirrer, 43 piping, 44 exhaust gas reservoir tank, 45, 45a , 45b, 45c, 45d chimney, 46 inert gas introduction pipe, 47 chimney, 50 charcoal, 60 carbonization system, 61, 62, 63, 64 piping, 65 to 76 partition plate, 100 carbonization furnace, 101 lid, 102 furnace body , 103 inlet, 104 heat resistant packing, 105 piping, 106 exhaust gas storage tank

Claims (4)

In a carbonization furnace that carbonizes the object to be carbide by heating at a high temperature in a furnace in which air is replaced with an inert gas,
A furnace body formed with an inlet for charging the carbide;
A liquid reservoir provided continuously from the periphery of the inlet to the outside of the furnace body;
Provided to be freely opened and closed at the charging port of the furnace body, and includes a lid for closing the charging port and sealing the furnace body,
The lid and the furnace inlet are configured to be sealed so that the edge of the lid is immersed in the seal liquid stored in the liquid reservoir,
With the lid closed, a gap is formed between the lid and the charging port so that the furnace body is not distorted considering the size change when the furnace body is expanded by heat. A carbonization furnace comprising a lid support provided to support the lid. The carbonization furnace according to claim 1, wherein a stirrer is provided in the furnace body so that the temperature in the furnace body is uniform. Using water vapor or carbon dioxide instead of the inert gas,
The carbonization furnace according to claim 1 or 2, wherein water is used as the sealing liquid. A plurality of carbonization furnaces according to any one of claims 1 to 3,
A carbonization system comprising: combustion chambers of the plurality of carbonization furnaces connected to each other, and control means for controlling the respective carbonization furnaces so as to operate continuously in conjunction with each other.