TWI645957B - Method and computer program product for wood pellet fuel production - Google Patents

Abstract

A method for producing a wood chip granulation fuel and a computer program product, the method comprising the steps of: selecting a squeeze channel pressure from a first database to calculate a product of a ring die extrusion channel diameter and the extrusion channel pressure as a Reaction force; selecting a blanket height and a compression displacement corresponding to the reaction force from a second database to calculate a raw material delivery amount and a gap between the pressure roller and the ring mold; multiple inputs from a third database One of the material rates is selected to calculate a product of the material throughput as a feeder speed; and one of the plurality of motor frequencies of a fourth database is selected as a driving frequency, according to the driving frequency, the feeder speed and The press roll and the ring die gap send at least one command to a granulator to produce the sawdust granulation fuel.

Description

Wood chip granulation fuel production method and computer program product

The present invention relates to a fuel production method, and more particularly to a method and a computer program product for producing a wood pelletizing fuel.

Modern society is highly developed, and the demand for energy is increasing. The traditional way is to burn fossil fuels (such as coal, heavy oil or natural gas) to generate heat, such as power generation or steel industry. Among them, the use of natural gas as fuel is more environmentally friendly but costly, while burning coal or heavy oil is more economical but has a large amount of pollution.

As a result, fuel demand that combines price and pollution, such as green fuel or biomass fuel, has gradually emerged. For example, wood pellet fuel is produced by processes such as pulverization, drying, extrusion, bonding, and cutting of wood materials such as pine or iron wood.

However, in the process of pellet fuel pressing, problems such as shortage of raw materials or specification changes are sometimes encountered. Once the raw materials are different (such as changing the type of wood chips, water content, etc.), the same equipment is used, and the qualified fuel cannot be produced normally. The main reason is that the composition of wood materials, cohesive properties and fuel specifications are different. For example, rushing to suppress other wood chips by using the original process may easily lead to low fuel fastness, which may cause problems such as loose fuel and low combustion efficiency.

In view of the above, it is necessary to provide a method for producing a wood chip granulation fuel which is different from the prior art to solve the problems of the conventional technology.

It is an object of the present invention to provide a method for producing a wood chip granulation fuel which is selected for a wood property to granulate different wood chips to a desired size to form a fuel, thereby improving the stability of the fuel supply.

Another object of the present invention is to provide a computer program product which can be executed as above The method for producing a sawdust granulation fuel.

In order to achieve the above object, the present invention provides a method for producing a wood pelletizing fuel, which may include the steps of: selecting a pressure from a first database as a pressing channel pressure during the production of the wood pelletizing fuel, the pressure corresponding to the a condition after the sawdust granulation fuel is extruded, the condition is: a moisture content of the wood pelletizing fuel is between 7.7 and 15.3 percent by weight, and the integrated density of the wood pelletizing fuel is between 600 and 748 Kg/m3, calculate the product of the diameter of a ring die extrusion channel and the pressure of the extrusion channel during the production of the sawdust granulation fuel as a reaction force in the production of the sawdust granulation fuel; the sawdust is selected from a second database The height of a carpet layer and a compression displacement during the production of the granulated fuel, the height of the carpet layer and the compression displacement correspond to the reaction force and the requirement of the particle size, the moisture content and the oil content of the wood pelletizing fuel production, a difference between the height of the carpet layer and the compression displacement is used as a gap between the pressure roller and the ring mold in the production of the wood pelletizing fuel, and the height of the carpet layer is calculated, and the wood pelletizing fuel is produced. a product of the width of the press roll and the rotation arc length of the inner ring of the ring die as a raw material delivery amount; a selected one of the plurality of feed rates from a third database is calculated as a feed product of the raw material delivery amount as a feed And a speed selected from a plurality of motor frequencies of a fourth database as a driving frequency, according to the driving frequency, the feeder rotation speed and the gap between the pressure roller and the ring mold to send at least one command to a granulator To produce the sawdust granulation fuel.

In an embodiment of the present invention, before the pressure is selected from the first database, a press machine can be controlled to establish a plurality of kinds of wood chips which are extruded in a plurality of pressures under various combinations of the water content and the oil content. A related data of density and recorded in the first database.

In an embodiment of the present invention, before selecting the height of the carpet layer and the compression displacement from the second database, a tensile testing machine can be controlled to establish a plurality of wood chips to be compressed under various combinations of the oil content and the particle size. A plurality of sets of associated data relating to the reaction force, the moisture content and the compression displacement are generated and recorded in the second database.

In an embodiment of the present invention, before selecting one of the plurality of feed rates from the third database, the plurality of wood chips can be tested for the multiple feed rates obtained at a plurality of rotation speeds of a feeder, and recorded. In the third database.

In an embodiment of the present invention, a plurality of ring modes of a motor frequency converter at a plurality of motor frequencies can be retrieved before selecting one of the plurality of motor frequencies of the fourth database Speed and recorded in the fourth database.

In an embodiment of the invention, the wood chips may be set to beadwood chips, eucalyptus chips or discarded wood pallet wood chips.

In an embodiment of the invention, the extrusion channel pressure can be set to be between 0.01 and 0.169 kilonewtons per square centimeter.

In an embodiment of the invention, the particle size can be set to be between 0.01 and 10 cm.

In an embodiment of the invention, the oil content may be set to a weight percentage between 0 and 2.

To achieve the above object, the present invention further provides a computer program product capable of executing the method of producing a wood pelletizing fuel as described above after loading and executing the computer program product via a computer.

S1‧‧‧ steps

S2‧‧‧ steps

S3‧‧‧ steps

S4‧‧‧ steps

a‧‧‧Circular arc length of the inner ring of the ring

H‧‧‧ carpet height

W‧‧‧roller width

Fig. 1 is a flow chart showing a method for producing a sawdust granulation fuel according to an embodiment of the present invention.

Fig. 2A is a graph showing the measurement results of the method for producing a sawdust granulation fuel according to an embodiment of the present invention, wherein the particle size of the wood granules is 1 to 10 mm and the oil-containing (vegetable oil) ratio is 2% by weight.

Fig. 2B is a graph showing the measurement results of the method for producing a sawdust granulation fuel according to an embodiment of the present invention, wherein the particle size of the granules of 0.5 to 1 mm and the oil-containing (vegetable oil) ratio of 2% by weight is compressed by force.

Fig. 2C is a graph showing the measurement results of the method for producing a sawdust granulation fuel according to an embodiment of the present invention, wherein the particle size of the wood granules having a particle size of less than 0.5 mm and an oil-containing (vegetable oil) ratio of 2% by weight is compressed by force.

2D is a measurement result when the method for producing a sawdust granulation fuel according to an embodiment of the present invention has a particle size of 1 to 10 mm and an oil-containing (vegetable oil) ratio of 0% by weight.

2E is a measurement result when the method for producing a sawdust granulation fuel according to an embodiment of the present invention has a particle size of 0.5 to 1 mm and an oil-containing (vegetable oil) ratio of 0% by weight.

Fig. 2F is a measurement result when the method for producing a sawdust granulation fuel according to an embodiment of the present invention has a particle size of less than 0.5 mm and an oil-containing (vegetable oil) ratio of 0% by weight.

Fig. 3A is a view showing the measurement method of the wood chip granulation fuel of the embodiment of the present invention when the size of the waste wood chipboard having a particle size of 1 to 10 mm and an oil (vegetable oil) ratio of 2 wt% is compressed by force. result.

Fig. 3B is a graph showing the measurement results of the wood chip granules of the embodiment of the present invention in which the particle size of the wood chips is 0.5 to 1 mm and the oil (vegetable oil) ratio is 2% by weight.

Fig. 3C is a graph showing the measurement results of the method for producing wood chips granulated fuel according to the embodiment of the present invention, wherein the wood chips having a particle size of less than 0.5 mm and an oil-containing (vegetable oil) ratio of 2% by weight are subjected to compression.

Fig. 3D is a measurement result of the method for producing a sawdust granulation fuel according to an embodiment of the present invention, wherein the waste wood chipboard having a particle size of 1 to 10 mm and an oil-containing (vegetable oil) ratio of 0% by weight is subjected to compression.

Fig. 3E is a graph showing the measurement results of the wood chip granules of the embodiment of the present invention in which the particle size of the wood chips is 0.5 to 1 mm and the oil (vegetable oil) rate is 0% by weight.

Fig. 3F is a measurement result of the method for producing a sawdust granulation fuel according to an embodiment of the present invention, wherein the waste wood chipboard having a particle size of less than 0.5 mm and an oil (vegetable oil) ratio of 0% by weight is subjected to compression.

Fig. 4A is a graph showing the measurement results of the eucalyptus (eucalyptus) wood chips having a particle size of 1 to 10 mm and an oil (vegetable oil) ratio of 2% by weight in the method for producing a sawdust granulation fuel according to an embodiment of the present invention.

Fig. 4B is a graph showing the measurement results of the eucalyptus (eucalyptus) wood chips having a particle size of 0.5 to 1 mm and an oil (vegetable oil) ratio of 2% by weight in the method for producing a sawdust granulation fuel according to an embodiment of the present invention.

Fig. 4C is a graph showing the measurement results of the eucalyptus (eucalyptus) wood chips having a particle size of less than 0.5 mm and an oil (vegetable oil) ratio of 2% by weight in the method for producing a sawdust granulation fuel according to an embodiment of the present invention.

Fig. 4D is a graph showing the measurement results of the eucalyptus (eucalyptus) wood chips having a particle size of 1 to 10 mm and an oil (vegetable oil) ratio of 0% by weight in the method for producing a sawdust granulation fuel according to an embodiment of the present invention.

Figure 4E: The method for producing a sawdust granulation fuel according to an embodiment of the present invention, wherein the eucalyptus (eucalyptus) wood chips having a particle size of 0.5 to 1 mm and an oil (vegetable oil) ratio of 0% by weight are compressed by force Measurement results.

Fig. 4F is a graph showing the measurement results of the eucalyptus (eucalyptus) wood chips having a particle size of less than 0.5 mm and an oil (vegetable oil) ratio of 0% by weight in the method for producing a sawdust granulation fuel according to an embodiment of the present invention.

Fig. 5 is a schematic diagram showing the relationship between the ring mode rotational speed of the sawdust granulation fuel production method and the frequency of the drive motor frequency converter of the embodiment of the present invention.

Fig. 6 is a view showing the height of the carpet layer, the width of the press roll, and the arc length of the inner ring of the ring mold per unit time in the method for producing the sawdust granulation fuel according to the embodiment of the present invention.

Fig. 7A is a photograph (I) of a flavonoid fuel sample produced by the method for producing a sawdust granulation fuel of the present invention.

Fig. 7B is a photograph (2) of a sample of cedar granules produced by the method for producing a sawdust granulation fuel of the present invention.

Fig. 7C is a photograph (3) of a flavonoid fuel sample produced from a method for producing a sawdust granulation fuel of the present invention.

Fig. 7D is a photograph (4) of a flavonoid fuel sample produced by the method for producing a sawdust granulation fuel of the present invention.

Fig. 7E is a photograph (5) of a flavonoid fuel sample produced by the method for producing a sawdust granulation fuel of the present invention.

Fig. 7F is a photograph (6) of a sample of cedar granules produced by the method for producing a sawdust granulation fuel of the present invention.

Fig. 8A is a photograph (I) of a eucalyptus (eucalyptus) sawdust granulated fuel produced by the method for producing a sawdust granulation fuel of the present invention.

Fig. 8B is a photograph of a eucalyptus (eucalyptus) sawdust granulated fuel sample produced by the method for producing a sawdust granulation fuel of the present invention (2).

Fig. 8C is a photograph of a eucalyptus (eucalyptus) sawdust granulated fuel sample produced by the method for producing a sawdust granulation fuel of the present invention (III).

Fig. 9A is a photograph of a sample of waste wood veneer granulated fuel produced by the method for producing a sawdust granulation fuel of the present invention (I).

Figure 9B: Waste wood pallet produced by the method for producing wood chips granulation fuel of the present invention Photograph of wood chip granulation fuel sample (2).

Fig. 9C is a photograph of a sample of a waste wood veneer granule granulated fuel produced by the method for producing a sawdust granulation fuel of the present invention (III).

Fig. 9D is a photograph of a sample of waste wood veneer granulated fuel produced by the method for producing a sawdust granulation fuel of the present invention (4).

The above and other objects, features and advantages of the present invention will become more <RTIgt; Furthermore, the directional terms mentioned in the present invention, such as upper, lower, top, bottom, front, rear, left, right, inner, outer, side, surrounding, central, horizontal, horizontal, vertical, longitudinal, axial, Radial, uppermost or lowermost, etc., only refer to the direction of the additional schema. Therefore, the directional terminology used is for the purpose of illustration and understanding of the invention.

Referring to FIG. 1 , the method for producing a sawdust granulation fuel according to an embodiment of the present invention mainly comprises the following steps S1 to S4: Step S1, selecting a pressure from a first database as one of the production of the sawdust granulation fuel. Extrusion channel pressure corresponding to a condition after the sawdust granulation fuel is extruded, the condition is: a moisture content of the sawdust granulation fuel is between 7.7 and 15.3 by weight, and the sawdust is granulated The integrated density of the fuel is between 600 and 748 kg/m 3 , and the product of the diameter of the ring die extrusion orifice and the pressure of the extrusion channel during the production of the sawdust granulation fuel is calculated as a reaction force when the sawdust granulation fuel is produced; Step S2, selecting a carpet layer height and a compression displacement when the wood chip granulation fuel is produced from a second database, the carpet layer height and the compression displacement corresponding to the reaction force and a particle size of the wood chip granulation fuel production Calculating the difference between the height of the carpet layer and the compression displacement as a gap between the pressure roller and the ring mold in the production of the sawdust granulation fuel, and calculating the height of the carpet layer. a product of a press roll width in the production of the sawdust granulation fuel and a rotation arc length of the inner ring of the ring die as a raw material delivery amount; and a step S3, selecting one of a plurality of feed rates from a third database Calculating a product of the raw material delivery amount as a feeder rotation speed; and in step S4, selecting one of the plurality of motor frequencies of a fourth database as a driving frequency, according to the driving frequency, the feeder rotation speed, and the The press roll and the ring die gap send at least one command to a granulator to produce the sawdust granulation fuel.

In an embodiment, the invention may be prior to selecting the pressure from the first database. Controlling a press machine to establish a correlation data of various wood chips in various combinations of the plurality of pressure extrusions in the various combinations of the water content and the oil content, and recording the data in the first database. The establishment type of the first database may be a storage data type such as a cloud database or a local database, and is not described here.

In an embodiment, before selecting the height of the carpet layer and the compression displacement from the second database, the present invention can control a tensile testing machine to establish a plurality of wood chips to be compressed under the combination of the oil content and the particle size. A plurality of sets of associated data for the reaction force, the moisture content, and the compression displacement are recorded in the second database.

In one embodiment, prior to selecting one of the plurality of feed rates from the third database, the present invention can test the plurality of wood chips to obtain the plurality of feed rates at a plurality of rotational speeds of a feeder, and record The third database.

In an embodiment, before selecting one of the plurality of motor frequencies of the fourth database, the present invention can capture a plurality of ring mode rotational speeds of a motor frequency converter at a plurality of motor frequencies, and record The fourth database.

For example, with the above method embodiment, the woody biomass can be used (for example, it can be a broken raw material; preferably a broken woody biomass material; preferably a cedar, an abandoned wood pallet, and especially Galicwood (eucalyptus) is pelletized by pelletizing. First, a Bulk density test can be performed, such as applying a press machine (such as Carver's Carver 3889 Auto CH-PL, etc.) and selecting a mold similar to the extrusion channel of a granulator. A squeezing tunnel simulation platform, the granulator may be a ring die granulator (for example: ring die extrusion hole diameter: 8 mm; press roll width: 62 mm; ring die length to diameter ratio: 6.25; ring die inner diameter: 225 mm) The extrusion tunnel simulation platform may include an operation control system for use as a human-machine information exchange interface, and the extrusion channel simulation platform can be used to test various wood chip sizes that are extruded into pellets under a specific pressure. Density, test parameters include the type of raw materials (such as: cedar, waste wood pallet, eucalyptus (eucalyptus), etc., particle size (eg, 100mm or less, may be 0.1 to 10mm, preferably 1 to 10mm), The water content (for example, may be 7.7 to 36.81 wt%; preferably 20.59 to 36.81 wt%; optimally 20.59 to 36.43 wt%), and the oil (vegetable oil) ratio (e.g., may be 0 to 2 wt%; preferably 2wt%), pressure (eg: 0.084 to 0.169kN/mm ² ).

In the above bulk density test, the void ratio of the particulate fuel is about 0.3865. The test results are shown in Tables 1 to 3 below.

Wherein, when the wood chips enter a ring mold of the ring die granulator, they are guided by the material bar, and moved to a region to be pressed, and a blanket layer is formed in the area to be pressed to form a carpet layer. The axis of a pressure roller of the ring die granulator is fixed at a specific position and is rotated only by the friction of the carpet layer; the carpet layer rotates with the ring die and moves between the pressure roller and the ring die . The gap between the pressure roller and the ring mold (for example, 0.01 to 20 mm; preferably 0.01 to 5 mm; preferably 0.01 to 1 mm) is less than the height of a carpet layer (for example, 0.01 to 20 mm; preferably 0.01 to 10mm; preferably 0.01 to 5mm), therefore, the carpet layer is pressed by the pressure roller and the ring die, and the carpet layer is pressed to generate a reaction force, and the reaction force can be used as a The pressure of the extrusion channel (for example, may be 0.01 to 0.169 kN/mm ² ; preferably 0.084 to 0.169 kN/mm ² ), the source of the reaction force is not limited thereto, and the carpet layer is pressed to make the The height of the carpet layer is reduced. For example, the height of the carpet layer after being pressed is equal to the gap between the pressure roller and the ring mold, and the difference in the height of the carpet layer before and after the compression of the carpet layer is a compression displacement. Wherein, the magnitude of the reaction force may vary depending on the extent to which the carpet layer is squeezed, and the larger the compression displacement, the greater the reaction force. In this case, only the required extrusion channel pressure is generated in this way, but not limited thereto.

In addition, in order to effectively generate the required extrusion channel pressure, it is also possible to establish correlation data between wood chip specifications (such as particle size, water content, oil (vegetable oil) rate, etc.), carpet height, and reaction force. In this case, a reaction force test can be performed using a tensile tester (eg MTS) Criterion's Model 43, etc., to measure the reaction force of the sawdust under compression, the measurement conditions may include raw materials (such as: cedar, discarded wood pallets, eucalyptus (eucalyptus), etc., particle size (such as : particle size below 10 mm), water content (eg 10~30wt%), oil (vegetable oil) rate (eg 0~2wt%), carpet height (eg 10~20mm). Among them, the measurement results when the cedar chips are compressed by force are shown in Figures 2A to 2F, and the measurement results when the wood chips of the discarded wood pallets are compressed by force are shown in Figures 3A to 3F, Eucalyptus (eucalyptus) The measurement results when the sawdust is compressed by force are as shown in Figs. 4A to 4F.

In addition, in the case where the ring mold and the pressure roller are of a specific size, the slower the rotation speed of the ring mold or the higher the material conveying amount (ie, the amount of feed), the higher the height of the carpet layer. In this case, the feed rate of the raw material can be controlled by a feeder speed, so that the correlation between the feed amount of the raw material and the speed of the feeder can be established, and the amount of raw material delivered by a plurality of wood chips at a specific feeder speed can be established. The measurement results are shown in Table 4 below.

Among them, the relationship between the raw material conveying amount and the feeder rotation speed is y=Ax ² +Bx+C, y is the feeder rotation speed (rpm), and x is the raw material conveying amount. In this example, the control of the ring mode rotational speed (e.g., 50 to 355 rpm; preferably 207 to 355 rpm; preferably 260 to 296 rpm) may be controlled by a transmission motor (e.g., 10 to 60 Hz; It is preferably 35 to 60 Hz; preferably 43 to 50 Hz. It can also establish a correlation between the speed of the ring mode and the frequency of the inverter of the drive motor, as shown in Figure 5, but not limited to this. The results of the above embodiments are exemplified below, but are not limited thereto.

For example, suppose that the particle size to be produced is a moisture content of 5.315.3 wt% and a bulk density of 公斤600 kg/m ³ (kg/m ³ ). After comparing the above Tables 1 to 3, the extrusion can be known. The pressure in the orifice is required to be 0.084 kN/mm ² or more. Moreover, if a pressing hole diameter is 8 mm (mm), the reaction force can be estimated to be 4.22 kN or more (the pressing hole pressure multiplied by the pressing hole cross-sectional area is equal to the reaction force). Further, the reaction force is combined with the correlation data of the compression displacement and the reaction force (such as FIGS. 2A to 2F, 3A to 3F, 4A to 4F) and the wood chip size, and the compression displacement and the height of the carpet layer are known. Moreover, the height of the carpet layer minus the compression displacement is the gap between the pressure roller and the ring mold. Further, as shown in Fig. 6, the height h of the carpet layer is combined with the width w of the press roll, and the arc length a of the inner ring of the ring mold per unit time (e.g., 0.59 to 4.18 m/sec; preferably 2.44 to 4.18 m). /sec; optimally 3.06 to 3.49 m/sec), which can be used to estimate the feed rate of the raw material (eg, 0 to 59.6 kg/min; preferably 0 to 29.8 kg/min; optimally 0.245 to 0.587 kg/min) ). Moreover, the relationship between the raw material delivery amount and the feeder rotation speed can be converted into the feeder rotation speed setting value to obtain relevant production parameters (as shown in Table 5 below), and the production results of various granular fuels can be as shown in Table 6 below. To the table shown in 8.

Table 6 Production results of cedar granules

According to the above embodiment, the granular fuel produced by using the various wood chip specifications can have a bulk density of more than 600 (kg/m ³ ), a fastness of 76% or more, a water content of 15.3 wt% or less, and a molding rate. More than 80%. Thereby, in order to apply the particulate fuel to various occasions where heat energy is required to be generated, the above-described embodiments of the present invention can be applied to fuels produced from various wood chip raw materials as compared with the specifications of conventional fuel manufacturing methods and the limited types of raw materials. It is conducive to providing uninterrupted and demanding fuel.

In addition, according to the above embodiment of the present invention, the method for producing the sawdust granulation fuel can also be implemented as a computer program product, which can be written in a programming language (such as C or Java, etc.), and the computer program product can be stored in A computer-readable storage device, such as a CD, a hard drive or a flash drive, etc., when a computer (such as a personal computer, notebook, tablet or server computer with a processor for information processing functions) The computer program product in the storage device can execute the above-mentioned production method of the wood chip granulation fuel according to the computer program product.

Further, according to the above embodiment of the present invention, a plurality of devices for testing related parameters and producing fuel, such as a granulator, a tablet press, a tensile tester, and a motor inverter, can be controlled by the above computer program product, such as The granulator, the press machine, the tensile testing machine and the motor frequency converter are electrically connected to the computer for integration into an automatic device, and the granulator, the pressing machine, the tensile testing machine and the motor are converted by the computer program product. The machine performs an automatic control operation to facilitate the above-mentioned fuel production operation.

The present invention has been disclosed in its preferred embodiments, and is not intended to limit the invention, and the present invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application.

Claims (10)

A method for producing a sawdust granulation fuel, comprising the steps of: selecting a pressure from a first database as a pressure of extrusion pores in the production of the sawdust granulation fuel, the pressure corresponding to a sawdust granulation fuel being extruded In one condition, the condition is: a moisture content of the wood pelletizing fuel is between 7.7 and 15.3 percent by weight, and the integrated density of the wood pelletizing fuel is between 600 and 748 kg/m 3 , and the sawdust granulation is calculated. The product of the diameter of a ring die extrusion orifice and the pressure of the extrusion tunnel during fuel production is used as a reaction force in the production of the sawdust granulation fuel; a carpet height at the time of production of the sawdust granulation fuel is selected from a second database And a compression displacement, the height of the carpet layer and the compression displacement corresponding to the reaction force and the requirement of a particle size, the moisture content and an oil content of the sawdust granulation fuel, and calculating the height of the carpet layer and the compression displacement The difference is used as a pressure roller and ring gap in the production of the sawdust granulation fuel, and the height of the carpet layer, the width of a press roll in the production of the sawdust granulation fuel, and a unit time ring die are calculated. a product of the rotation length of the circle as a raw material delivery amount; one selected from a plurality of feed rates of a third database is calculated as a feed speed of the feedstock as a feeder speed; and from a fourth database A selected one of the plurality of motor frequencies is used as a driving frequency, and at least one command is sent to the granulator according to the driving frequency, the feeder rotation speed, and the pressure roller and the ring gap to produce the sawdust granulation fuel. The method for producing a sawdust granulation fuel according to claim 1, wherein before the pressure is selected from the first database, a press machine is controlled to establish a plurality of wood chips under various combinations of the water content and the oil content. Squeeze in multiple pressures A related data of various body densities of press molding is recorded in the first database. The method for producing a wood pelletizing fuel according to claim 1, wherein before the selection of the carpet height and the compression displacement from the second database, controlling a tensile testing machine to establish a plurality of wood chips at the oil content rate A plurality of sets of associated data of the reaction force, the moisture content and the compression displacement of the plurality of carpet layers generated by the force compression under various combinations of the particle sizes are recorded in the second database. The method for producing a sawdust granulation fuel according to claim 1, wherein before the one of the plurality of feed rates from the third database is selected, a plurality of wood chips are tested at a plurality of rotation speeds of a feeder. The multiple feed rates are recorded in the third database. The method for producing a sawdust granulation fuel according to claim 1, wherein a motor inverter is taken at a plurality of motor frequencies before one of the plurality of motor frequencies is selected from the fourth database. Multiple ring mode rpms are recorded in the fourth database. The method for producing a sawdust granulation fuel according to the above aspect of the invention, wherein the wood chips are set as cedar chips, eucalyptus chips or waste wood pallet wood chips. The method for producing a sawdust granulation fuel according to claim 1, wherein the extrusion channel pressure is set to be from 0.01 to 0.169 kN/cm 2 . The method for producing a sawdust granulation fuel according to the above aspect of the invention, wherein the particle size is set to be from 0.01 to 10 cm. A method for producing a sawdust granulation fuel according to claim 1, wherein The oil content is set to a weight percentage between 0 and 2. A computer program product capable of performing the production method of the wood pelletizing fuel according to any one of claims 1 to 9 after the computer program product is loaded and executed by a computer.