JP2018111758A - Method for adjusting the state of chlorine removal from solid fuel, and solid fuel production apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce a carbonized fuel by adjusting a chlorine removal rate. SOLUTION: A processing temperature in a carbonization facility 1 that carbonizes biomass (woody biomass) is adjusted by a control means 21, and a carbonization fuel 8 is manufactured by adjusting a chlorine removal rate (removal status) and used. Depending on the situation of the chlorine purification system, etc. on the side where the carbonized fuel 8 is used, without any restrictions on the chlorine content of the product, any (based at low cost and containing chlorine) based on the manufacturing cost and exhaust gas purification performance Choose woody biomass [Selection] Figure 1

Description

  TECHNICAL FIELD The present invention relates to a solid fuel chlorine removal status adjustment method and a solid fuel production apparatus, for example, a chlorine removal status adjustment method when carbonizing biomass to form solid fuel, and biomass carbonization to solid fuel. It relates to a manufacturing apparatus.

  For example, in a thermal power plant, it is considered to effectively use biomass that has been treated as an unused resource as a fuel. In particular, the use of carbon neutral woody biomass has been studied (for example, Patent Document 1). Patent Document 1 proposes that pyrolysis of woody biomass generates carbide and gas, and uses the carbide as fuel for the boiler to obtain electric power.

  In addition, it is considered to obtain electric power by mixing carbide made from biomass with coal and burning it with a boiler. Under such circumstances, the amount of biomass used is expanding. However, with an increase in demand for biomass, it is expected that it will become difficult to obtain biomass that can be co-fired with coal, and that the price of biomass will increase.

  For this reason, at present, the use of biomass that cannot be co-fired with coal, for example, a tree that has been harvested in a place close to the sea and contains a large amount of chlorine (woody biomass) is being studied. If biomass containing chlorine can be used, the amount of biomass applicable to a coal-fired power plant can be increased, and the cost required for acquisition can be reduced as the supply amount of biomass increases. It is considered possible.

  Since the solid fuel obtained by carbonizing biomass containing chlorine has a high chlorine content per unit volume, it is preferable to remove chlorine during the carbonization process. However, it has been technically difficult to obtain a solid fuel reduced to an arbitrary chlorine content during the carbonization process. On the other hand, if the user is equipped with an exhaust gas treatment that can sufficiently remove chlorine, the raw material can be obtained at low cost even for solid fuel obtained from biomass containing chlorine. Because it is possible, it is a reality that there is a demand to use.

  For this reason, when obtaining solid fuel from biomass containing chlorine (when carbonizing), if the chlorine content can be adjusted to some extent, from biomass that can be obtained at a stable price, depending on the circumstances of the user Thus, a solid fuel having a desired chlorine content can be obtained, and it becomes possible to meet the demand for using inexpensive biomass.

  Under such circumstances, when carbon containing biomass containing chlorine is carbonized to obtain a solid fuel, it is desired that a technology capable of adjusting the removal status of chlorine be desired.

JP 2014-205730 A

  The present invention has been made in view of the above situation, and provides a solid fuel chlorine removal status adjustment method and a solid fuel production apparatus capable of producing a solid fuel by adjusting the chlorine removal status. Objective.

  In particular, the present invention provides a solid fuel chlorine removal status adjustment method and a solid fuel production apparatus capable of adjusting the chlorine removal rate when carbonizing biomass (woody biomass) to obtain carbide (solid fuel). For the purpose.

  To achieve the above object, the solid fuel chlorine removal status adjusting method according to claim 1 of the present invention grasps the carbonization status of the solid fuel and derives the chlorine removal status based on the carbonization status, The chlorine removal status of the solid fuel is controlled according to the carbonization status.

  In the present invention according to claim 1, by adjusting the carbonization status of the solid fuel, the chlorine removal status is controlled during the carbonization treatment, and a solid fuel from which chlorine has been removed in a desired status can be obtained.

  As a result, it becomes possible to produce a solid fuel by adjusting the chlorine removal status. Since the chlorine removal status can be adjusted, the cost and exhaust gas purification performance can be reduced depending on the situation of the chlorine purification system on the side using solid fuel, without being restricted by the chlorine content of the raw material. Any raw material can be selected based on this.

  Incidentally, Japanese Patent Application Laid-Open No. 2005-67789 discloses a technique for producing a solid fuel having a chlorine content of 0.002% or less by roasting woody biomass. This technique is a technique for finding conditions for removing chlorine as much as possible. For this reason, the technique disclosed in Japanese Patent Application Laid-Open No. 2005-67789 is a technique in a field different from the method for adjusting the chlorine removal status of solid fuel of the present invention, which can adjust the chlorine removal status to an arbitrary status.

  The solid fuel chlorine removal status adjusting method according to claim 2 is the solid fuel chlorine removal status adjusting method according to claim 1, wherein the chlorine removal status is a chlorine removal rate, and the chlorine removal The rate is derived based on the content ratio of chlorine in the raw material of the solid fuel and the content ratio of chlorine in the carbonized fuel after the raw material is carbonized.

  In the present invention according to claim 2, a solid fuel from which chlorine is removed at a desired chlorine removal rate can be obtained. The derivation of the chlorine removal rate is derived on the basis of the chlorine content ratio in the raw material of the solid fuel and the chlorine content ratio in the carbonized fuel after the raw material is carbonized.

For example,
Let the content of chlorine in the raw material be m1,
The supply amount of raw material is m0,
Let the content of chlorine in carbonized fuel be m2,
When the emission amount of carbonized fuel (the state in which carbonization progresses as the emission amount decreases) is m3,
The chlorine removal rate R can be obtained by the following equation (1).
R = {(m1 · m0) − (m2 · m3)} / (m1 · m0) (1)
It has been found as a finding that the chlorine removal rate R is derived based on the treatment temperature when carbonizing the raw material (see FIG. 3 described later).
For this reason, the content rate m2 of chlorine in the carbonized fuel can be obtained by the following equation (2).
m2 = m1 · m0 (1-R) / m3 (2)

  Further, the solid fuel chlorine removal status adjusting method of the present invention according to claim 3 is the solid fuel chlorine removal status adjusting method according to claim 1 or 2, wherein the carbonization status is a raw material of the solid fuel. It is the processing temperature of the carbonization process of this.

  In this invention which concerns on Claim 3, the content condition of the chlorine in the solid fuel carbonized according to the process temperature of the carbonization process of a raw material can be adjusted.

  The solid fuel chlorine removal status adjusting method according to claim 4 of the present invention is the solid fuel chlorine removal status adjusting method according to claim 1 or 2, wherein the carbonization status is the raw material of the solid fuel. It is characterized by the carbonization rate in the carbonization treatment (weight ratio of the amount of fixed carbon in the solid fuel subjected to carbonization treatment).

  In the present invention according to claim 4, the carbonization rate in the carbonization treatment of the raw material, that is, the content of chlorine in the solid fuel carbonized according to the weight ratio of the fixed carbon amount in the solid fuel subjected to the carbonization treatment Can be adjusted.

  The solid fuel chlorine removal status adjustment method according to claim 5 of the present invention is the solid fuel chlorine removal status adjustment method according to any one of claims 1 to 4, wherein the solid fuel feedstock Is biomass (woody biomass).

  In the present invention according to claim 5, the biomass can be carbonized to obtain a solid fuel from which chlorine is removed in a desired chlorine removal situation. As the biomass, it is preferable to use woody biomass such as forest residue, thinned wood, unused trees, sawmill waste, construction waste, and the like. Moreover, as biomass, it is also possible to use unused biomass such as rice, straw, and rice husk, and waste biomass such as waste paper, livestock manure, food residue, and sludge.

  In order to achieve the above object, a solid fuel production apparatus according to claim 6 of the present invention comprises a carbonization means for carbonizing a raw material to form a solid fuel, a carbonization condition adjusting means for controlling a carbonization condition by the carbonization means, Control means for storing a relationship of chlorine removal status with respect to a predetermined carbonization status as chlorine information, inputting a desired carbonization status, and outputting an operation instruction to the carbonization status adjusting means so as to obtain the input desired carbonization status It is characterized by comprising.

  In the present invention according to claim 6, the state of chlorine removal during the carbonization treatment in the carbonization means is controlled by adjusting the carbonization state of the solid fuel by the carbonization state adjustment means in accordance with the command of the control means. The carbonization condition adjusting means is operated so that the command of the control means becomes the input desired carbonization condition. By setting the desired carbonization state, the state of chlorine removal during the carbonization treatment is controlled to a desired state, and a solid fuel from which chlorine has been removed in the desired state can be obtained.

  As a result, it becomes possible to produce a solid fuel by adjusting the chlorine removal status. Since the chlorine removal status can be adjusted, the cost and exhaust gas purification performance can be reduced depending on the situation of the chlorine purification system on the side using solid fuel, without being restricted by the chlorine content of the raw material. Any raw material can be selected based on this.

  Incidentally, Japanese Patent Application Laid-Open No. 2005-67789 discloses a technique for producing a solid fuel having a chlorine content of 0.002% or less by roasting woody biomass. This technique is a technique for finding conditions for removing chlorine as much as possible. For this reason, the technique disclosed in Japanese Patent Application Laid-Open No. 2005-67789 is a technique in a field different from the method for adjusting the chlorine removal status of solid fuel of the present invention, which can adjust the chlorine removal status to an arbitrary status.

  And the solid fuel manufacturing apparatus of the present invention according to claim 7 is the solid fuel manufacturing apparatus of claim 6, wherein the chlorine removal status of the chlorine information stored in the control means is a chlorine removal rate. It is characterized by being.

  In the present invention according to claim 7, it is possible to obtain a solid fuel from which chlorine is removed at a desired chlorine removal rate. The derivation of the chlorine removal rate is derived on the basis of the chlorine content ratio in the raw material of the solid fuel and the chlorine content ratio in the carbonized fuel after the raw material is carbonized. A chlorine removal rate can be calculated | required by Formula (1) mentioned above, for example. Based on the equation (1), the chlorine content in the carbonized fuel can be obtained by the equation (2) described above.

  An apparatus for producing a solid fuel according to an eighth aspect of the present invention is the apparatus for producing a solid fuel according to the sixth or seventh aspect, wherein the carbonization means has a treatment temperature when the raw material is carbonized. And a carbonization state is a treatment temperature detected by the treatment temperature detection means.

  In this invention which concerns on Claim 8, the content condition of the chlorine in the carbonized solid fuel can be adjusted according to the process temperature (process temperature of the carbonization process of a raw material) detected by the process temperature detection means.

  The solid fuel production apparatus of the present invention according to claim 9 is the solid fuel production apparatus according to claim 6 or 7, wherein the carbonization rate (carbonization treatment of the solid fuel carbonized by the carbonization means is performed. The carbonization rate deriving means for obtaining the weight ratio of the fixed carbon amount in the applied solid fuel is provided, and the carbonization state is the carbonization rate obtained by the carbonization rate deriving means.

  In the present invention according to claim 9, the carbonization rate in the carbonization process of the raw material obtained by the carbonization rate deriving means, that is, the solid carbonized according to the weight ratio of the fixed carbon amount in the solid fuel subjected to the carbonization process The content of chlorine in the fuel can be adjusted.

  The solid fuel production apparatus according to claim 10 is the solid fuel production apparatus according to any one of claims 6 to 9, wherein the solid fuel material is biomass (woody biomass). ).

  In this invention which concerns on Claim 10, biomass can be carbonized and it can be set as the solid fuel from which chlorine was removed in the desired chlorine removal condition. As the biomass, it is preferable to use woody biomass such as forest residue, thinned wood, unused trees, sawmill waste, construction waste, and the like. Moreover, as biomass, it is also possible to use unused biomass such as rice, straw, and rice husk, and waste biomass such as waste paper, livestock manure, food residue, and sludge.

  The method for adjusting the chlorine removal status of a solid fuel of the present invention makes it possible to manufacture a solid fuel by adjusting the chlorine removal status.

  Moreover, the solid fuel manufacturing apparatus of the present invention can manufacture a solid fuel by adjusting the state of chlorine removal.

  The solid fuel chlorine removal status adjustment method and solid fuel production apparatus according to the present invention adjust the chlorine removal rate particularly when carbonizing biomass (woody biomass) to obtain carbide (solid fuel). It becomes possible to obtain a carbide (solid fuel) from which chlorine has been removed at a desired chlorine removal rate.

1 is a schematic system diagram of a solid fuel manufacturing apparatus to which a chlorine removal status adjusting method according to an embodiment of the present invention is applied. It is a block block diagram of the control means of the solid fuel manufacturing apparatus which concerns on one Example of this invention. It is a graph showing the relationship between a chlorine removal rate and process temperature. It is a block block diagram of the control means of the manufacturing apparatus of the solid fuel which concerns on the other Example of this invention. It is a graph showing the relationship between a chlorine removal rate and the ratio (carbonization rate) of fixed carbon.

  The method of adjusting the chlorine removal status of solid fuel according to the present embodiment grasps the carbonization status (carbonization temperature, carbonization rate) of the woody biomass when carbonizing the biomass (woody biomass) and uses it as the fuel, and based on the carbonization status By deriving the chlorine removal status (chlorine removal rate), the chlorine removal rate of the wood biomass charcoal (solid fuel) is controlled according to the carbonization status. For example, a carbide from which chlorine has been removed at a desired chlorine removal rate can be obtained.

  For this reason, it becomes possible to adjust the removal rate of chlorine and to manufacture woody biomass. Since the chlorine removal rate can be adjusted, it is based on the cost and exhaust gas purification performance depending on the situation of the chlorine purification system on the side that uses carbide, without being restricted by the chlorine content of the raw material Any raw material can be selected.

  In other words, when obtaining carbide from woody biomass containing chlorine (when carbonizing), the chlorine content can be adjusted to some extent, so from the woody biomass that can be obtained at a stable price, to the situation of the use side Accordingly, a carbide having a desired chlorine content can be obtained, and it becomes possible to meet a demand for using cheap woody biomass.

  Derivation of the chlorine removal rate is derived based on the chlorine content in the woody biomass, which is the raw material for carbides, and the chlorine content in the charcoal (carbonized fuel) after the woody biomass is carbonized. Is done.

For example,
The content of chlorine in the raw woody biomass is m1,
The supply amount of raw woody biomass is m0,
The chlorine content in carbide (carbonized fuel) is m2,
When the emission amount of carbide (carbonized fuel) (the state in which carbonization progressed the smaller the emission amount) was m3,
The chlorine removal rate R can be obtained by the following equation.
R = {(m1 · m0) − (m2 · m3)} / (m1 · m0)
It has been found as a finding that the chlorine removal rate R is derived based on the treatment temperature when carbonizing the raw material (see FIG. 3 described later). For this reason, the content rate m2 of chlorine in the carbonized fuel can be obtained by the following equation.
m2 = m1 · m0 (1-R) / m3

  As the raw material biomass, it is preferable to use woody biomass such as forest residue, thinned wood, unused trees, lumber waste, construction waste, and the like. In addition, as raw material biomass, it is also possible to use unused biomass such as rice, straw, and rice husks, and waste biomass such as waste paper, livestock manure, food residues, and sludge.

  A solid fuel production apparatus for carrying out a solid fuel chlorine removal status adjusting method according to an embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 is a schematic system for explaining the overall configuration of a solid fuel production apparatus according to an embodiment of the present invention. FIG. 2 is a block diagram of control means in the solid fuel production apparatus according to an embodiment of the present invention. FIG. 3 is a graph showing the relationship between the chlorine removal rate and the treatment temperature.

  As shown in FIG. 1, a carbonization facility 1 is provided as carbonization means that carbonizes biomass (woody biomass) as a raw material into carbonized fuel (solid fuel). The carbonization facility 1 includes a heating main body 2 in which woody biomass is sequentially conveyed in the axial direction from the inlet portion 3 toward the outlet portion 4. The heating body 2 is composed of a rotating body that is rotated by a motor 5 b, and the woody biomass is conveyed toward the outlet portion 4 by the rotation of the heating body 2. Woody biomass is supplied to the heating body 2 from a conveyor 6 (screw conveyor) driven by a motor 5a. The carbonization time of the woody biomass is adjusted by controlling the woody biomass supply speed by the conveyor 6 and the woody biomass conveyance speed by the rotation of the heating body 2 (carbonization state adjusting means).

  The heating body 2 of the carbonization facility 1 is covered with the heating drum 11, and the hot biomass is supplied between the heating body 2 and the heating drum 11 (inside the heating drum 11), so that the woody biomass inside the heating body 2 is carbonized. Is done. By controlling the temperature of the hot air, the carbonization time of the woody biomass is adjusted (carbonization condition adjusting means). The heating drum 11 is provided with temperature detecting means 13 as processing temperature detecting means (for example, four locations are provided in the axial direction of the heating drum 11), and the temperature detecting means 13 detects the processing temperature of the carbonization treatment.

  In the above-described embodiment, an example in which a rotating drum type reaction facility that rotates the heating body 2 (rotary body) and conveys the raw material is applied as the carbonization facility 1 has been described. However, a multistage combustion furnace is provided. It is possible to apply a facility for heating (directly or indirectly) the raw material in another form such as a reaction facility, a fluidized bed type reaction facility, or a moving bed type reaction facility.

  Carbonized fuel 8 that is carbonized woody biomass is discharged from the outlet 4 through the cooling means 12. In addition, pyrolysis gas containing chlorine generated along with carbonization is discharged from the outlet portion 4 and sent to the processing facility for purification. Since the pyrolysis gas can also be used as fuel, all or part of the pyrolysis gas is introduced into a fuel supply path 16 described later.

  A hot stove 15 for supplying hot air is provided inside the heating drum 11. Fuel is supplied from the fuel supply path 16 to the hot stove 15, and combustion air is supplied from the air supply path 17. The fuel supply path 16 is provided with a flow rate adjusting means 18a, and the air supply path 17 is provided with a flow rate adjusting means 18b. By controlling the flow rate adjusting means 18a, 18b, the fuel amount and the air amount are adjusted, and the temperature and flow rate of the hot air are controlled (carbonization state adjusting means).

  The carbonization facility 1 includes a control unit 21 that outputs an operation instruction to the carbonization state adjusting unit so that the woody biomass has a desired carbonization state (chlorine removal rate). That is, information on the desired chlorine removal rate, information on the chlorine content of the woody biomass (raw material information), and the like are input to the control means 21, and the carbonization process detected by the temperature detection means 13 as necessary. Temperature information is entered.

  From the control means 21, a drive command is output to the motors 5a and 5b, and a control command is output to the flow rate adjusting means 18a and 18b. That is, the supply speed of the woody biomass by the conveyor 6 is controlled, and the rotation speed of the heating body 2 is controlled to control the transportation speed of the woody biomass. The state of the fuel amount in the fuel supply passage 16 and the state of the combustion air flow rate in the air supply passage 17 are controlled to control the temperature and flow rate of the hot air from the hot stove 15. By controlling the temperature and flow rate of the hot air from the hot air furnace 15, the processing temperature of the carbonization treatment is controlled, and the chlorine content of the carbonized fuel 8 carbonized according to the processing temperature (the chlorine removal rate of the carbonized fuel). ) Is adjusted.

  As shown in FIG. 2, the control means 21 stores a relationship of a chlorine removal rate (chlorine removal status) to a predetermined processing temperature (carbonization status) as a temperature-removal rate map 22 (chlorine information). In the control means 21, the temperature with respect to the input desired chlorine removal rate is derived from the temperature-removal rate map 22, and the temperature and flow rate of the hot air are adjusted by the temperature control means 23 so as to be the derived temperature. A control command is output from the control means 21 to the air supply path 17 (carbonization facility 1) so that the temperature and flow rate of the hot air adjusted by the temperature control means 23 are obtained.

  In the temperature-removal rate map 22, as shown in FIG. 3, the relationship between the chlorine removal rate and the processing temperature is mapped. For example, until the treatment temperature for carbonizing woody biomass reaches a certain temperature T1 (eg, 360 ° C. to 380 ° C.), the chlorine removal rate gradually increases, and a lot of chlorine is removed (eg, removal). Rate 80% to 90%).

  When the processing temperature exceeds T1, which is a certain temperature, there is almost no increase in the removal rate of chlorine, and when the processing temperature becomes TS (for example, 400 ° C) higher than the certain temperature, the temperature becomes higher. However, the chlorine removal rate does not change (for example, 90% is the upper limit).

  For example, if a chlorine treatment facility is not provided, the desired chlorine removal rate of the required carbonized fuel becomes a high value (close to 100%), so the treatment temperature when carbonizing woody biomass is T1. By adjusting and operating the carbonization facility 1, the carbonized fuel 8 from which chlorine has been removed at the maximum removal rate can be obtained.

  In addition, for example, in the case where smoke removal equipment capable of removing chlorine at a high level is provided, the desired chlorine removal rate of the required carbonized fuel does not have to be high (about 70%), so the woody biomass is carbonized. By operating the carbonization facility 1 with the treatment temperature adjusted to a temperature lower than T1, the carbonized fuel 8 from which chlorine has been removed at a desired removal rate can be obtained with the minimum energy consumption. .

  As a result, the carbonized fuel 8 (solid fuel) having an arbitrary chlorine removal rate (desired chlorine removal rate) can be produced by controlling the treatment temperature when carbonizing the woody biomass.

  In other words, it is possible to adjust the removal temperature (removal status) of chlorine by carbonizing woody biomass to adjust the removal rate (removal status) of the woody biomass and to produce carbonized fuel 8 (solid fuel). Depending on the situation of the chlorine purification system, etc. on the side where carbonized fuel 8 (solid fuel) is used without being restricted by the content status, any (based on low cost and chlorine content) based on the cost and exhaust gas purification performance It becomes possible to select woody biomass.

  The above-described solid fuel production apparatus can adjust the chlorine removal rate by adjusting the processing temperature when carbonizing woody biomass to obtain a carbide (solid fuel).

  Another embodiment of the present invention will be described with reference to FIGS. In the present embodiment, the chlorine removal rate of the carbonized fuel 8 is adjusted according to the carbonization rate of the carbonized fuel 8.

  From the control means 21, a drive command is output to the motor 5, and a control command is output to the flow rate adjustment means 18. That is, the conveyance speed by the conveyor 6 is controlled, and the carbonization time of the woody biomass is adjusted. By adjusting the carbonization time, the carbonization rate of the carbonized fuel 8 (weight ratio of the amount of fixed carbon in the carbonized fuel that has been carbonized) is controlled, and the chlorine of the carbonized fuel 8 carbonized according to the carbonization rate Content (removal rate of chlorine in the carbonized fuel 8) is adjusted.

  The control means 21 is provided with carbonization rate deriving means for obtaining the carbonization rate of the carbonized fuel 8 carbonized in the heating body 2 (weight ratio of the amount of fixed carbon in the carbonized fuel that has been carbonized). The relationship of the chlorine removal rate (chlorine removal status) to the carbonization rate (carbonization status) obtained by the means is stored as a carbonization rate-removal rate map 25.

  The control means 21 derives the carbonization rate for the input desired chlorine removal rate from the carbonization rate-removal rate map 25, and the hot air temperature, flow rate, and conveying speed by the conveyor 6 are adjusted so as to obtain the derived carbonization rate. The carbonization temperature and carbonization time of the woody biomass are controlled and adjusted by the carbonization rate control means 26 (carbonization rate is adjusted).

  From the control means 21, control commands are sent to the air supply path 17 (carbonization equipment 1) and the motor 5 (carbonization equipment 1) so that the temperature, flow rate, and conveyance speed of the hot air adjusted by the carbonization rate control means 26 are obtained. Is output.

  In the carbonization rate-removal rate map 25, as shown in FIG. 5, the relationship between the chlorine removal rate and the ratio of fixed carbon (fixed carbon amount: carbonization rate) is mapped. For example, while the ratio of fixed carbon in the carbonized fuel reaches a certain ratio, for example, exceeds 20 wt% and reaches 30 wt%, the chlorine removal rate rapidly increases and a lot of chlorine is removed (for example, , Removal rate from 80% to 90%).

  And if the ratio of fixed carbon in the carbonized fuel exceeds a certain ratio, for example, if it exceeds 30 wt%, the increase in the removal rate of chlorine is almost eliminated, and even if the ratio of fixed carbon becomes higher than this, the chlorine removal ratio Does not change (for example, 90% is the upper limit).

  For example, if a chlorine treatment facility is not provided, the desired chlorine removal rate of the required carbonized fuel becomes a high value (close to 100%), so the ratio of fixed carbon when carbonizing woody biomass ( By adjusting the operation of the carbonization facility 1 so that the carbonization rate is, for example, 30 wt%, the carbonized fuel 8 from which chlorine has been removed at the maximum removal rate can be obtained.

  In addition, for example, in the case where smoke removal equipment capable of removing chlorine at a high level is provided, the desired chlorine removal rate of the required carbonized fuel does not have to be high (about 70%), so the woody biomass is carbonized. By adjusting the operation of the carbonization facility 1 by adjusting the fixed carbon ratio (carbonization rate) to a state lower than 30 wt%, chlorine is removed at a desired removal rate with minimum energy consumption. Carbonized fuel 8 can be obtained.

  As a result, the carbonized fuel 8 (solid fuel) having an arbitrary chlorine removal rate (desired chlorine removal rate) can be produced by controlling the carbonization rate when the woody biomass is carbonized.

  In other words, it is possible to adjust the carbonization rate when carbonizing woody biomass to adjust the chlorine removal rate (removal status), and to produce carbonized fuel 8 (solid fuel). Depending on the situation of the chlorine purification system, etc. on the side where carbonized fuel 8 (solid fuel) is used without being restricted by the content status, any (based on low cost and chlorine content) based on the cost and exhaust gas purification performance It becomes possible to select woody biomass.

  The above-described solid fuel manufacturing apparatus can adjust the removal rate of chlorine by adjusting the carbonization rate when carbonizing woody biomass to obtain a carbide (solid fuel).

  INDUSTRIAL APPLICABILITY The present invention can be used in the industrial field of a solid fuel chlorine removal condition adjustment method and a solid fuel production apparatus.

DESCRIPTION OF SYMBOLS 1 Carbonization equipment 2 Heating main body 3 Inlet part 4 Outlet part 5a, 5b Motor 6 Conveyor 8 Carbonized fuel 11 Heating drum 12 Cooling means 13 Temperature detection means 15 Hot stove 16 Fuel supply path 17 Air supply path 18a, 18b Flow rate adjustment means 21 Control Means 22 Temperature-removal rate map 23 Temperature control means 25 Carbonization rate-removal rate map 26 Carbonization rate control means

Claims (10)

The solid fuel chlorine is characterized by grasping the carbonization status of the solid fuel and deriving the chlorine removal status based on the carbonization status, thereby controlling the chlorine removal status of the solid fuel according to the carbonization status. Removal status adjustment method. In the solid fuel chlorine removal status adjustment method according to claim 1,
The chlorine removal status is the chlorine removal rate,
The chlorine removal rate is
It is derived based on the content ratio of chlorine in the raw material of the solid fuel and the content ratio of chlorine in the carbonized fuel after carbonizing the raw material. Situation adjustment method. In the method for adjusting the state of chlorine removal from a solid fuel according to claim 1 or 2,
The carbonization state is a treatment temperature of carbonization treatment of the raw material of the solid fuel. In the method for adjusting the state of chlorine removal from a solid fuel according to claim 1 or 2,
The carbonization state is a carbonization rate in carbonization treatment of the raw material of the solid fuel. In the solid fuel chlorine removal status adjustment method according to any one of claims 1 to 4,
The solid fuel raw material is biomass. A method for adjusting the state of chlorine removal from a solid fuel. A carbonization means for carbonizing the raw material into a solid fuel;
Carbonization condition adjusting means for controlling the carbonization condition by the carbonization means;
Control means for storing a relationship of chlorine removal status with respect to a predetermined carbonization status as chlorine information, inputting a desired carbonization status, and outputting an operation instruction to the carbonization status adjusting means so as to obtain the input desired carbonization status An apparatus for producing a solid fuel, comprising: In the solid fuel manufacturing apparatus according to claim 6,
The apparatus for producing solid fuel, wherein the chlorine removal status of the chlorine information stored in the control means is a chlorine removal rate. In the solid fuel manufacturing apparatus according to claim 6 or 7,
The carbonization means includes
A processing temperature detection means for detecting a processing temperature when the raw material is carbonized is provided,
The carbonization situation is
The apparatus for producing a solid fuel, wherein the processing temperature is detected by the processing temperature detecting means. In the solid fuel manufacturing apparatus according to claim 6 or 7,
Carbonization rate deriving means for obtaining the carbonization rate of the solid fuel carbonized by the carbonization means is provided,
The carbonization situation is
It is the carbonization rate calculated | required by the said carbonization rate deriving means. The solid fuel manufacturing apparatus characterized by the above-mentioned. In the solid fuel manufacturing apparatus according to any one of claims 6 to 9,
The raw material for the solid fuel is biomass.

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