JP6986739B2 - Bamboo biomass fuel manufacturing method - Google Patents

Description

The present invention relates to a bamboo biofuel production method for producing a bamboo biofuel using bamboo as a raw material.

With the recent increase in environmental protection and environmental awareness, the introduction and installation of combustion devices that use fuels other than fossil fuels are required. Combustion devices are used in a variety of situations. For example, it is used for combustion for treatment such as combustion treatment of food waste and combustible waste, soil combustion for soil reforming, and combustion treatment of special waste. Alternatively, steam, heat of combustion, combustion gas, and combustion energy obtained by combustion of a combustion device are often used. For example, it may be used as a heat source in a factory or the like using power generation using combustion energy, combustion heat or combustion gas.

In this way, the combustion device is used in various situations, such as when combustion itself is required (combustion processing) or when energy such as heat obtained by combustion is used (as a combustion device). ..

Such a combustion device requires fuel. Until now, fossil fuels have been used as fuel in many combustion devices. Fossil fuels such as petroleum, heavy oil and natural gas have been used.

However, due to the decrease in fossil fuels and soaring prices, fuels other than fossil fuels are required. In addition, fossil fuels have problems such as carbon dioxide emissions due to combustion from the production process, and alternative energy is required from the viewpoint of environmental protection and environmental awareness.

Naturally-derived biomass fuels are attracting attention as a fuel that can respond to environmental protection and heightened environmental awareness in place of such fossil fuels. In some cases, simply felled wood is used as it is as fuel, but carbonized wood fuel is also beginning to be used as biomass fuel. Scraps generated at sawmills and thinned wood from forests are used as woody biomass fuel.

However, due to the recent increase in population, decrease in forest area, and decline in forestry, scraps and thinned wood are decreasing. Another problem is that the price of woody biomass fuel itself is also rising due to the rise in prices due to the decrease in wood itself. In addition, due to such a situation, the supply of woody biomass fuel is also insufficient.

On the other hand, there are many bamboo grove in Japan. Some bamboo grove is maintained as a tourism resource, but many bamboo grove are located in mountainous areas and satoyama, and the area of the bamboo grove is very large. Bamboo forests other than bamboo forests that are managed as tourism resources and gardens have many unmaintained bamboo forests due to labor shortages and a declining local population.

Bamboo has a high growth rate, and in unmaintained bamboo forests, the ever-increasing processing of bamboo has become a problem. The ever-increasing number of unmaintained bamboo grove causes various problems. For this reason, local governments and local residents are working to cut down bamboo in bamboo grove to prevent problems caused by the ever-increasing number of bamboo.

However, logging causes a large amount of felled bamboo. There are many uses for bamboo, but there are many alternatives, so the supply to demand is very large, and many areas are suffering from the problem of surplus logging. Disposing of felled bamboo is not easy from the viewpoint of cost and environmental issues.

In such an environment, bamboo biomass fuel is attracting attention instead of woody biomass fuel in order to solve the problem of bamboo, which is difficult to dispose of and use. A technique for producing such a bamboo biomass fuel has been proposed (see, for example, Patent Document 1, Patent Document 2, Patent Document 3, and Patent Document 4).

Japanese Unexamined Patent Publication No. 2016-1205030 Japanese Unexamined Patent Publication No. 2017-105920 Japanese Unexamined Patent Publication No. 2011-144248 Japanese Unexamined Patent Publication No. 2006-26474

Patent Document 1 describes from an atomizing device 2 for atomizing a plant as a raw material, an elution device 6 for eluting a water-soluble substance from a plant atomized by the atomizing device 2 under an atmospheric pressure environment, and an elution device 6. A plant having a dehydrator 14 which is a dehydrator for dehydrating the discharged plants, a silo 17 for storing the plants dehydrated by the dehydrator 14, and an eluent tank 20 for storing the solution discharged from the dehydrator 14. Disclose the biofuel reforming method.

Patent Document 1 discloses that bamboo is immersed in water to elute potassium (K) and chlorine (Cl), then dried, and bamboo is used as a fuel.

Bamboo contains potassium and chlorine, and if it is used as a fuel while containing it, there is a problem that unfavorable gas is generated in the combustion device, and impurities such as clinker and incomplete combustion are generated. There is also a problem that clinker and impurities adhere to the inside of the combustion device and cause deterioration of the combustion device.

Patent Document 1 aims to remove these potassium and chlorine from bamboo by water-soluble.

However, the removal of these potassium and chlorine by water is insufficient. This is because there is a limit to the level and ability of water-soluble substance extraction itself. In addition, the amount of potassium and chlorine contained varies greatly depending on the bamboo, the natural environment, or the weather environment. The amount of potassium and chlorine contained varies greatly depending on the production area and the logging time.

It is difficult to deal with this variation in water-soluble extraction. If the water-soluble extraction time is insufficient, the removal of these from bamboo containing a large amount of potassium and chlorine will be insufficient because the extraction will be at a certain level. On the other hand, if the water-soluble extraction time is excessive, it is not suitable for bamboo containing only a small amount of potassium and chlorine. In addition, if the water-soluble extraction time becomes too long, it leads to a problem that the combustion capacity as a fuel after drying is inferior.

Further, in water-soluble extraction, there is a limit to the removal of potassium and the like due to phenomena such as osmotic pressure, and there is a problem that these cannot be sufficiently removed.

Bamboo contains not only potassium and chlorine, but also bamboo tar. Bamboo tar also has a problem of causing tar content adhesion volume on clinker and flue when burned. This bamboo tar cannot be removed by the water-soluble extraction, and Patent Document 1 does not take this into consideration.

Patent Document 2 includes a step of cutting a bamboo material (cutting step), a step of immersing the cut bamboo material in water (immersion step), and a step of taking the soaked bamboo material out of water and drying it (drying step). Disclosed is a method for producing fuel bamboo in which the temperature of water in the process is in the range of 50 to 100 ° C.

Patent Document 2 also has a point that it is a water-soluble extraction, and (Problem 1) it is not possible to sufficiently remove potassium and chlorine, which vary greatly depending on bamboo, without variation and without causing defects as a fuel (Problem 2). ) The removal ability is insufficient, and (Problem 3) Bamboo tar cannot be removed, which is the same problem as in Patent Document 1.

Patent Document 3 describes both of 100% by weight of raw bamboo from which branches and leaves have been removed after 2 years of age, and 25 to 400% by weight of dead bamboo having a water content of less than 55% from which branches and leaves have been removed after 2 years of age. A crushing and crushing step of crushing and crushing the powder in a crushing / crushing machine 6 to obtain a bamboo-based mixed powder, and a drying step of drying the bamboo-based mixed powder obtained in the crushing and crushing step with a dryer 10. A method for producing bamboo pellet fuel, which comprises a granulation step of granulating a bamboo-based mixed powder dried in a drying step with a granulator 12 to obtain bamboo pellets.

In Patent Document 3, since bamboo fuel is produced only by drying and crushing, not only bamboo tar but also potassium and chlorine cannot be removed. If it cannot be removed, problems with the combustion device arise as described above.

Patent Document 4 describes a method of improving crushability while suppressing pulverization by pyrolyzing a woody biomass raw material at a temperature of 240 ° C. or higher and 300 ° C. or lower for a time of 15 minutes or longer and 90 minutes or shorter and then crushing the raw material. Disclosed is a method in which bamboo is thermally decomposed at a temperature of 170 ° C. or higher and 220 ° C. or lower for 15 minutes or longer and 120 minutes or shorter and then crushed to weaken the interfiber strength while maintaining the fiber direction strength.

Patent Document 4 also has the same problems as Patent Documents 1 to 3.

As described above, in the conventional technology, it has been possible to realize a technology that sufficiently removes impurities contained in the bamboo biomass fuel and does not easily cause problems when used as a fuel in a combustion device. There wasn't.

In view of these problems, it is an object of the present invention to provide a bamboo biomass fuel method for producing a bamboo biomass fuel that can be used as a fuel without problems by sufficiently removing impurities such as potassium.

The bamboo biomass fuel production method of the present invention includes a storage chamber for accommodating raw bamboo and a storage chamber.
A steam supply unit that supplies steam to the storage chamber and
A heated steam supply unit that supplies heated steam that has a higher temperature than steam and a lower steam concentration to the containment chamber,
It is equipped with a control unit that controls the supply of steam and heated steam.
The steam supply unit has a steam control mechanism that can adjust the supply amount of steam, and the heated steam supply unit uses a bamboo biomass fuel production device that has a heated steam control mechanism that can adjust the supply amount of heated steam. It is a bamboo biomass fuel manufacturing method that manufactures biomass fuel.
After storing the raw bamboo in the storage room,
The control unit supplies steam to the accommodating chamber from the steam supply unit from the first hour to the second hour, and supplies heated steam to the accommodating chamber from the heated steam supply unit from the second hour to the third hour.
From the first hour to the second hour, the control unit opens the steam regulation mechanism and closes the heated steam regulation mechanism.
From the second hour to the third hour, the steam regulation mechanism was closed and the heated steam regulation mechanism was opened.
The steam supplied by the steam supply unit brings the temperature and humidity of the raw bamboo close to uniform.
The heated steam supplied by the heated steam supply unit extracts and removes potassium, chlorine and bamboo tar contained in the raw bamboo.
The heated steam also dries the raw bamboo,
The time from the second hour to the third hour is longer than the time from the first hour to the second hour.

In the bamboo biomass fuel production method of the present invention, steam is applied to bamboo to keep the temperature and humidity constant, and then heated steam is applied to evenly remove excess components such as potassium. can do. After the temperature and humidity of the entire bamboo are kept constant, it is removed with heated steam, so there is little variation in removal.

Further, by applying heated steam, the excess component contained in the bamboo is thermally extracted, so that it can be reliably removed. This applies not only to potassium and chlorine, but also to bamboo tar. Since it is not just heat application but heating steam application, it does not easily affect the carbon component of bamboo.

As for steam and heated steam, the emissions from the combustion device using bamboo biomass fuel can be actually used, and the circulation mechanism as a whole can be established. As a result, it is possible to realize a circulation-type combustion system while utilizing bamboo, which is difficult to dispose of.

It is a schematic diagram of the bamboo biomass fuel production apparatus in Embodiment 1 of this invention. It is a schematic diagram which shows the supply of water vapor or the like to the containment chamber in Embodiment 1 of this invention on the time axis. It is a schematic diagram which shows the supply of water vapor or the like in Embodiment 2 of this invention on the time axis. It is a schematic diagram which includes the bamboo biomass fuel production apparatus in Embodiment 2 of this invention, and the periphery.

The bamboo biomass fuel production apparatus according to the first aspect of the present invention includes a storage chamber for accommodating raw bamboo and a storage chamber.
A steam supply unit that supplies steam to the containment chamber and
A heated steam supply unit that supplies heated steam to the containment chamber,
It is equipped with a control unit that controls the supply of steam and heated steam.
The control unit supplies steam to the accommodating chamber from the steam supply unit during the first to second hours, and supplies heated steam to the accommodating chamber from the heated steam supply unit from the second hour to the third hour.

With this configuration, it is possible to produce bamboo biomass fuel by homogenizing the temperature and humidity of the raw material bamboo and removing excess components with heated steam.

In the bamboo biomass fuel production apparatus according to the second invention of the present invention, in addition to the first invention, the steam supply unit has a steam control mechanism capable of adjusting the amount of steam supplied, and the heated steam supply unit has a steam supply unit. It has a heated steam adjustment mechanism that can adjust the supply amount of heated steam.

With this configuration, the control unit can appropriately adjust or stop the supply amount of steam, adjust or stop the supply amount of heated steam, and the like.

In the bamboo biomass fuel production apparatus according to the third invention of the present invention, in addition to the second invention, the control unit is
From the first hour to the second hour, the steam regulation mechanism was opened and the heated steam regulation mechanism was closed.
From the second hour to the third hour, the steam regulation mechanism is closed and the heated steam regulation mechanism is opened.

With this configuration, it is possible to switch between the period for supplying steam and the period for supplying heated steam.

In the bamboo biomass fuel production apparatus according to the fourth aspect of the present invention, in addition to any one of the first to third inventions, the steam supplied by the steam supply unit makes the temperature and humidity of the raw material bamboo substantially uniform. Get closer,
The heated steam supplied by the heated steam supply unit extracts and removes potassium, chlorine and bamboo tar contained in the raw bamboo.

With this configuration, excess components can be reliably removed.

In the bamboo biomass fuel production apparatus according to the fifth aspect of the present invention, in addition to the fourth invention, the heated steam also dries the raw material bamboo.

With this configuration, it is possible to produce a bamboo biomass fuel by drying while removing excess components.

In the bamboo biomass fuel production apparatus according to the sixth aspect of the present invention, in addition to the first to fifth inventions, the second to third hours are taken from the first to second hours. The time to time is long.

With this configuration, excess components can be reliably removed and dried.

In the bamboo biomass fuel production apparatus according to the seventh aspect of the present invention, in addition to the first invention, steam is obtained from steam discharged from the combustion apparatus.
The heated steam is obtained by mixing the steam discharged from the combustion device and the waste heat discharged from the combustion device.

With this configuration, a cycle system of a combustion device and a fuel production device can be realized.

In the bamboo biomass fuel production apparatus according to the eighth aspect of the present invention, in addition to any one of the first to seventh inventions, the heated steam has a higher temperature and a lower steam concentration than the steam.

With this configuration, the heated steam can be reliably removed and dried. In particular, not only chlorine and potassium but also bamboo tar can be removed.

In the bamboo biomass fuel production apparatus according to the ninth aspect of the present invention, in addition to any one of the first to eighth inventions, a temperature sensor for detecting the temperature of the raw material bamboo or the storage chamber and humidity are detected. Further equipped with at least one of the humidity sensors,

Based on the detection results of at least one of the temperature sensor and the humidity sensor, the control unit has at least one of the time from the first hour to the second hour and the time from the second hour to the third hour. To adjust.

With this configuration, processing that reflects the state of the raw bamboo can be realized.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)

(Overview)
An overall outline of the bamboo biomass combustion production apparatus according to the first embodiment of the present invention will be described. Bamboo biomass fuel is a fuel obtained from bamboo as a raw material and can be used in a combustion device.

FIG. 1 is a schematic diagram of a bamboo biomass fuel production apparatus according to the first embodiment of the present invention. The bamboo biomass fuel production apparatus 1 produces bamboo biomass fuel based on the raw material bamboo 10. The bamboo biomass fuel production device 1 (hereinafter, abbreviated as “fuel production device” if necessary) includes a storage chamber 5, a steam supply unit 2, a heated steam supply unit 3, and a control unit 4.

The storage room 5 accommodates raw material bamboo 10 (cut from a bamboo grove, felled bamboo obtained by various routes, etc.), which is a raw material for bamboo biomass fuel. The steam supply unit 2 supplies steam to the storage chamber 5. The steam supply unit 2 includes a supply path 22 to which steam is supplied, and supplies steam to the storage chamber 5 through the supply path 22.

The heated steam supply unit 3 supplies heated steam to the storage chamber 5. The heated steam supply unit 3 includes a supply path 32 to which the heated steam is supplied, and the heated steam can be supplied to the storage chamber 5 through the supply path 32.

The control unit 4 controls the supply of steam and heated steam. The control unit 4 controls the supply of steam and heated steam by controlling the steam supply unit 2 and the heated steam supply unit 3. By this control, the supply amount and supply time of the steam supplied to the accommodation chamber 5 and the heated steam are controlled.

The control unit 4 supplies steam to the accommodation chamber 5 from the steam supply unit 2 during the first time to the second time (between the first time and the second time), and the second time to the third time. During the period up to the time (between the second time and the third time), the heated steam is supplied to the storage chamber 5 from the heated steam supply unit 3.

At this time, the control unit 4 supplies only steam from the steam supply unit 2 to the storage chamber 5 from the first hour to the second hour, and the heated steam supply unit from the second hour to the third hour. It is also possible to supply only heated steam from 3 to the storage chamber 5. In this case, the steam supplied to the storage chamber 5 changes from steam to heated steam after the second hour.

FIG. 2 is a schematic diagram showing the supply of water vapor or the like to the storage chamber according to the first embodiment of the present invention on the time axis.

From the first hour to the second hour, the control unit 4 controls the steam supply unit 2 to the supply state and supplies steam to the storage chamber 5 from the supply path 22. From the second hour to the third hour, the control unit 4 controls the heated steam supply unit 3 to the supply state, and supplies the heated steam to the storage chamber 5 from the supply path 32.

As shown in FIG. 2, steam is supplied from the first hour to the second hour, and heated steam is supplied from the second hour to the third hour. Of course, the time zone in which steam is supplied and the time zone in which heated steam is supplied may overlap, instead of being completely replaced in the second time as shown in FIG.

Here, when steam is supplied from the steam supply unit 2 to the storage chamber 5, steam is applied to the raw material bamboo 10. This steam brings the temperature and humidity of the raw material bamboo 10 almost uniformly as a whole. For example, the temperature and humidity can be made almost uniform in the whole of a single raw material bamboo. Alternatively, the temperature and humidity can be made substantially uniform in the whole of the plurality of raw bamboos.

After that, when the heated steam is supplied to the storage chamber 5, the heated steam is applied to the raw material bamboo 10. Heated steam has a lower humidity and a higher temperature than steam. By adding this heated steam, impure components such as potassium, chlorine, and bamboo tar contained in the raw material bamboo 10 are extracted and removed. In addition, the heat of the heated steam promotes drying, and bamboo biomass fuel is produced.

The raw material bamboo 10 is dried to obtain bamboo biomass fuel while the impure components are extracted and removed by adding heated steam. Here, the amount and content of the impure component contained in the raw material bamboo 10 greatly varies depending on the production area, the logging time, the weather and environment at the logging time, the transportation period, the environment at the time of transportation, and the like. The content and content of impure components differ greatly between raw bamboo with a high water content and raw bamboo with a low water content.

Even if it is heated with this big difference remaining, the removal of the impure component will vary. Due to the variation, it becomes a bamboo biomass fuel with an impure component remaining. This was a problem with the prior art.

The fuel manufacturing apparatus 1 of the present invention supplies steam before supplying heated steam to bring the temperature and humidity of the raw bamboo 10 close to substantially uniform. As a result, variations in the content and content of the impure component can be suppressed. In addition, even when heated steam is supplied and the impure component is removed and dried, it becomes easy to proceed uniformly as a whole. As a result, it is possible to remove and dry the impure component without variation.

As a result, it is possible to obtain a bamboo biomass fuel from which impure components such as chlorine, potassium and bamboo tar are sufficiently removed. In particular, heated steam can extract and remove not only chlorine and potassium but also bamboo tar. Bamboo tar can be removed, which was difficult with conventional drying and burning.

(Steam supply section and heated steam supply section)
The steam supply unit 2 includes a steam control mechanism 21. The water vapor adjusting mechanism 21 can adjust the amount of water vapor supplied. The steam control mechanism 21 is, for example, a control valve, and the amount of water vapor supplied can be adjusted by opening and closing the control valve.

The heated steam supply unit 3 includes a heated steam adjusting mechanism 31. The heated steam adjusting mechanism 31 can adjust the supply amount of heated steam. For example, it is a control valve, and the supply amount of heated steam can be adjusted by opening and closing the control valve.

Since both the steam adjusting mechanism 21 and the heated steam adjusting mechanism 31 can be closed, the supply of steam or heated steam can be stopped.

The control unit 4 can adjust the amount of water vapor supplied to the storage chamber 5 (including stopping) by controlling the water vapor adjusting mechanism 21. By controlling the heated steam adjusting mechanism 31, the control unit 4 can adjust the amount of heated steam supplied to the storage chamber 5 (including stopping).

From the first hour to the second hour, the control unit 4 opens the steam adjusting mechanism 21 and closes the heated steam adjusting mechanism 31. By this control, only water vapor is supplied to the accommodation chamber 5.

From the second hour to the third hour, the control unit 4 closes the steam adjusting mechanism 21 and opens the heated steam adjusting mechanism 31. By this control, only heated steam is supplied to the accommodating chamber 5 from the second hour to the third hour.

In this way, between the first hour and the second hour, the temperature and humidity of the raw bamboo 10 are brought close to uniform by the steam, and between the second hour and the third hour, the heated steam causes the raw bamboo 10 to be substantially uniform. The impure component of the raw material bamboo 10 will be extracted and removed. Through these processes, bamboo biomass fuel is produced from the raw material bamboo 10.

The heated steam also dries the raw material bamboo 10 in the storage chamber 5. This is because the heated steam has a high calorific value, and the raw bamboo 10 can be dried by this high temperature. After being dried, the raw material bamboo 10 becomes a bamboo biomass fuel that can be used as a fuel.

At this time, the steam adjusting mechanism 21 is provided in the supply path 22, and the supply of steam in the supply path 22 is switched by opening and closing. Similarly, the heated steam adjusting mechanism 31 is provided in the supply path 32, and the supply of the heated steam in the supply path 32 is switched by opening and closing.

As described above, the bamboo biomass fuel production apparatus 1 of the first embodiment can extract and remove excess components such as potassium, chlorine, and bamboo tar of the raw material bamboo 10 by using steam and heated steam. It is possible to produce a bamboo biomass fuel from which these excess components are removed and which is less likely to generate clinker or incomplete combustion gas during use. In particular, it can produce the merit that variation and defective bamboo biomass fuel are less likely to occur.

(Embodiment 2)

Next, the second embodiment will be described. In the second embodiment, various ingenuity of the bamboo biomass fuel production apparatus 1 described in the first embodiment will be described.

(Supply time)
FIG. 3 is a schematic diagram showing the supply of water vapor or the like in the second embodiment of the present invention on the time axis. The control unit 4 supplies steam to the accommodating chamber 5 from the first hour to the second hour, and supplies heated steam to the accommodating chamber 5 from the second hour to the third hour.

Here, the time from the first hour to the second hour when the steam is supplied and the time from the second hour to the third hour when the heated steam is supplied may be various. It may be about the same length of time.

On the other hand, it is also preferable that the length from the second hour to the third hour is longer than the length from the first hour to the second hour. FIG. 3 shows this state. The length from the first hour to the second hour is the time during which water vapor is supplied. As described above, the steam brings the temperature and humidity of the raw material bamboo 10 stored in the storage chamber 5 close to uniform.

On the other hand, the period from the second hour to the third hour is the time during which the heated steam is supplied. As described above, the heated steam is the time for drying while removing the excess component of the raw material bamboo 10 stored in the storage chamber 5.

From this point of view, it is also preferable that the length from the second hour to the third hour is longer than the length from the first hour to the second hour as shown in FIG.

Of course, the supply of steam and the supply of heated steam may be repeated a plurality of times. Alternatively, there may be time for both to be supplied. Further, a temperature sensor and a humidity sensor are provided inside the accommodation chamber 5, and the control unit 4 that reads out the detection result of this sensor is in the time from the first hour to the second hour, and from the second hour to the third hour. It is also preferable to adjust the time of.

Alternatively, the steam supply may not be switched immediately from the heated steam supply, but may be switched after a certain interval.

(Characteristics of heated steam)
Heated steam has a higher temperature and lower humidity (lower water concentration) than steam. The heated steam is obtained by heating the steam by adding heat having a large amount of heat to the steam or by heating it by the heat of combustion from the outside. By having such a characteristic, the heated steam can apply a high temperature having humidity to the raw bamboo 10 to extract and remove the excess component of the raw bamboo 10.

In addition, only hot air may be added between the 2nd hour and the 3rd hour.

(Supply of water vapor, etc.)
The generation path of steam and heated steam supplied to the bamboo biomass fuel apparatus 1 described in the first embodiment will be described. FIG. 4 is a schematic view including a bamboo biomass fuel production apparatus and its surroundings according to the second embodiment of the present invention.

In FIG. 4, a combustion device 20 (which may be grasped as a combustion boiler 20) is shown. The combustion device 20 burns using various fuels, and the combustion energy obtained by the combustion is used in various fields.

The combustion device 20 can generate water vapor and waste heat by burning fuel. These may be used for other purposes or may be discarded after discharge as unnecessary. Here, the steam supplied from the combustion device 20 can be used by the steam supply unit 2. FIG. 4 shows a state in which the steam supply unit 2 uses the steam discharged from the combustion device 20.

Further, the waste heat discharged from the combustion device 20 can also be used for heated steam. In FIG. 4, a path is provided in which the steam is reheated by the exhaust heat discharged by the reheater 50 provided in the combustion device 20, and the heated steam is obtained by this mixing. The heated steam obtained by mixing is connected to the heated steam supply unit 3. The heated steam supply unit 3 can supply the heated steam obtained by this mixing to the storage chamber 5.

In this way, the steam generated in the combustion device 20 and the reheater 50 provided in the waste heat unit can be used to obtain the steam and the heated steam required for the bamboo biomass fuel production device 1. At this time, even when the combustion device 20 is a combustion device using bamboo biomass fuel, the steam and waste heat generated from the combustion device 20 are utilized. With this configuration, the cycle in which the bamboo biomass fuel is produced is realized by utilizing the steam and waste heat from the combustion device using the bamboo biomass fuel.

The combustion device 20 that uses bamboo biomass fuel as fuel and the bamboo biomass fuel production device 1 are connected by utilizing the water vapor and waste heat generated from the combustion device 20. Through this connection, a cycle centered on bamboo biomass fuel can be realized. The combustion device 20 can utilize the generated combustion energy in various fields. By this cycle, it is possible to realize effective utilization of bamboo, which has a problem of disposal and disposal. Of course, since the excess component of the bamboo biomass fuel obtained from bamboo is surely removed, various problems in the combustion device 20 using the bamboo biomass fuel are unlikely to occur.

Together, these can promote an energy cycle that uses combustion energy while making effective use of bamboo.

As described above, the combustion apparatus described in the first and second embodiments is an example for explaining the gist of the present invention, and includes deformation and modification within a range not deviating from the gist of the present invention.

1 Bamboo biomass fuel production equipment 2 Steam supply unit 21 Steam control mechanism 22 Supply channel 3 Heated steam supply unit 31 Heated steam control mechanism 32 Supply channel 4 Control unit 5 Containment chamber 10 Raw material bamboo 20 Combustion device

Claims (3)

A storage room for storing raw bamboo and
A steam supply unit that supplies steam to the storage chamber and
A heated steam supply unit that supplies heated steam having a temperature higher than that of the steam and a lower steam concentration to the storage chamber,
A control unit that controls the supply of the steam and the heated steam is provided.
The steam supply unit has a steam control mechanism capable of adjusting the supply amount of steam, and the heated steam supply unit uses a bamboo biomass fuel production apparatus having a heated steam control mechanism capable of adjusting the supply amount of heated steam. It is a method for producing bamboo biomass fuel, which is a method for producing bamboo biomass fuel.
After storing the raw bamboo in the storage chamber,
The control unit supplies steam from the steam supply unit to the storage chamber during the first to second hours, and from the heated steam supply unit to the storage chamber from the second to third hours. Supply heated steam ,
From the first hour to the second hour, the control unit opens the steam regulating mechanism and closes the heated steam regulating mechanism.
From the second hour to the third hour, the steam regulation mechanism is closed and the heated steam regulation mechanism is opened.
The steam supplied by the steam supply unit brings the temperature and humidity of the raw material bamboo close to uniform.
The heated steam supplied by the heated steam supply unit extracts and removes potassium, chlorine and bamboo tar contained in the raw material bamboo.
The heated steam also dries the raw material bamboo,
A method for producing a bamboo biomass fuel , wherein the time from the second hour to the third hour is longer than the time from the first hour to the second hour . The steam obtained from the steam issued exhaust et al or a combustion apparatus,
The heating steam, the steam by the reheater to utilize exhaust heat discharged from the combustion device and steam discharged from the combustion apparatus is obtained in that to reheating, bamboo quality biomass fuel of claim 1 Symbol placement Manufacturing method . The bamboo biomass fuel production apparatus further includes at least one of a temperature sensor for detecting the temperature of the raw bamboo or the storage chamber and a humidity sensor for detecting the humidity.
Based on the detection results of at least one of the temperature sensor and the humidity sensor, the control unit has at least one of the time from the first hour to the second hour and the time from the second hour to the third hour. The bamboo biomass fuel production method according to claim 1 or 2, wherein the method for producing a bamboo biomass fuel is adjusted.

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