JP5667234B2 - Heat-treated camping fence and method for manufacturing the same - Google Patents

Description

  The present invention relates to a method for manufacturing a heat-treated camping kite and a heat-treated camping kite manufactured thereby. More particularly, the present invention relates to a heat-treated camping camp fire that is easier to ignite in the field than firewood and charcoal, can reduce the generation of firewood and sparks, and is difficult to break, and a method for manufacturing the same.

  Since 2005, the auto campground, which has been increasing as a space for family outdoor camping, has attracted attention as a new recreational facility. In such an auto campsite, the most common thing is to burn fire at the campsite, which eliminates daily fatigue and stress. In particular, human beings can feel pleasure because the act of burning is an action that can give other satisfaction and a sense of accomplishment. At the same time, cooking activities at the auto campground can be strengthened by raising the sense of community among families. The main thing in such cooking activities is to bake and eat meat on a campfire and barbecue using firewood and charcoal.

  In order to grill meat and make a campfire in this way, a grill is necessary, and charcoal or firewood is used as fuel. A commonly used fuel is charcoal, which is made of wood through various carbonization methods at a high temperature of 500 ° C. or higher and is also called charcoal. In general, hardwood is used as the material. In Korea, cucumbers (Hahaso, Abemaki, Mizunara, Quercus, etc.) are mainly used. Charcoal made from cucumbers is called hard coal, which is known to be superior to other trees and have better efficacy.

  The use of charcoal as fuel for barbecue is less than 50% of the weight of firewood, so it is easy to transport and transport, does not generate much smoke, and can be baked at low temperatures once lit. There is an advantage. However, on the other hand, various extracts (methane gas, acetic acid, hydrogen, oxygen, etc. that help combustion) are removed from the wood, leaving only the carbon component, so initial combustion is very difficult, it is fragile during handling, Not only is it inconvenient to handle, but there are also disadvantages such as the risk of causing sparks around the fire when it is ignited, and causing burns.

  As the coal making method, there are an uncovered coal method, a pile coal making method, an underground coal making method, a built-in kiln making method, etc. In recent years, there has been a method for producing a formed coal by compressing pulverized wood and carbonizing it. Proposed.

  Among these, the method of compressing the pulverized wood to produce charcoal includes a step of finely pulverizing the raw wood, a step of compressing and molding the pulverized wood (finely pulverized wood) to a certain size using a compressor, It consists of a process of heating the molded product to produce charcoal wood (charcoal).

  However, according to such a conventional charcoal manufacturing method, cracks are likely to occur even after compression molding of the pulverized wood, and in order to solve such problems, it is possible to mix the crushed wood with an adhesive and perform compression molding. Done.

  In this way, when the adhesive is contained inside the charcoal, when the consumer burns the charcoal to burn meat, there is a problem that harmful gas is generated by the adhesive contained in the charcoal. . Further, not only such coal coal, but also hard coal, there is a problem that a large amount of soot is easily generated due to the characteristics of the charcoal and further crushed.

  Instead of charcoal, it should be sold directly at auto campsites. The soot is heavy because moisture has not been removed, and is easier to ignite than charcoal, but it is difficult to ignite because smoke is generated due to the moisture contained in the soot. Furthermore, it is not only a disadvantage that a lot of sparks are generated, but also it is difficult to control the flame when grilling meat once it has ignited, which often ruins barbecue dishes.

  Another reason and reason for using a grill in an auto campsite is to use it as a nighttime lighting, in addition to simply grilling meat using charcoal. However, there are problems such as generation of smoke and less flame in order to provide such a space with charcoal and firewood.

  Therefore, the present invention has been devised to solve the above-described conventional problems, and is an initial ignition that is a disadvantage in burning firewood used as fuel for barbecue grills used in auto campgrounds. The time can be shortened, and not only the generation of smoke can be suppressed, but also a higher calorific value compared to conventional firewood can be realized, and furthermore, it can be used as a barbecue after being used as a campfire firewood. An object of the present invention is to provide a heat-treated camping kite whose hardness is higher than that of a conventional kite and which is hard to break, and a method for manufacturing the same.

  The method for producing a heat-treated camping firewood according to the present invention is preferably a step of cutting raw wood containing cucumbers such as abemaki, hahaso, konara, kunugi, or broad-leaved trees such as acacia trees and birch, to a certain length. And after moving the cut raw wood to a rapid high heat processing chamber, while adjusting the humidity using steam jet in a certain humidity range at a temperature of 150 to 230 ° C. for 5 to 24 hours A step of performing a high heat processing treatment, and a step of gradually decreasing the temperature in the rapid high heat processing chamber at a normal temperature for a certain time, and having a carbon content of 50 wt% or more and less than 80 wt% in the components, It is characterized in that hemicellulose is thermally decomposed without causing thermal decomposition of cellulose, thereby shortening the initial ignition time and reducing the generation of smoke and sparks.

  In addition, after the cutting step, the cutting may further include a step of rotating and cutting the cut log into a shape in which the central portion is recessed and the diameter increases from the center toward both sides.

  Moreover, it is desirable that the humidity adjustment in the process of performing the high heat processing is performed using steam injection within a range of 50% to 80% relative humidity.

  Moreover, the process of performing a high heat processing process can apply | coat the vegetable oil in which the aroma oil was contained on the surface of the cut raw wood as a desirable embodiment.

  The step of cutting with a lathe may further include a step of forming a bore in the length direction at the center of the cut raw wood.

  In a preferred embodiment, the cut log is generated when burning cucumbers such as abemaki, hahaso, konara, kunugi, hardwoods such as acacia trees and birch, and rosin, which generally refers to rosin. It is also possible to use conifers such as pine, cypress or cedar that are not used for reasons such as black smoke.

  Therefore, according to the present invention, it is possible to reduce the initial ignition time by eliminating the disadvantages of burning soot used as fuel for barbecue grills used in auto campsites, and suppress the generation of smoke and sparks. A heat-treated camping kite that can realize a higher calorific value than a general kite is provided.

  Moreover, according to the heat-treated camping firewood of the present invention, there is an effect that the occurrence of firewood is less than that of charcoal and it is difficult to break.

It is a figure which shows the shape of the raw wood which passed through the cutting process of the manufacturing method of the heat-treated camping fence by this invention. It is a comparison graph of ignition time. It is a comparison graph of the emitted-heat amount by combustion time.

  Hereinafter, the heat-treated camping ridge according to the present invention will be described in detail through its manufacturing method.

  First, a process of cutting raw wood including cucumbers such as abemaki, hahaso, konara, kunugi, or broad-leaved trees such as acacia trees and birch trees is performed at a predetermined length. In this step, the raw wood is cut to a size of about 10 cm to 50 cm, which is suitable for use. In the logs used in the present invention, commonly used cucumbers (Hahaso, Abemaki, Mizunara, etc.) and acacia trees, birch and other broadleaf trees are mainly used, but conifers (pines / woods / cedars) are also used. Can do. In the past, it could hardly be used for camping because of pine resin or the like, but in the present invention, it is possible to use coniferous trees as will be described later through a heat treatment process.

  After the cutting step, thermal processing is performed as described later. As a preferred embodiment, after cutting, the outer shape of the cut raw wood is shown in FIG. Can be selectively performed in the process of turning a lathe into a shape that increases toward the both sides. That is, the rotary lathe is cut so that the diameter at the center portion is smaller than the diameter at both side portions and gradually increases toward the both sides.

  Thus, as one embodiment of the present invention, the reason for turning and cutting into a special shape is that the soot burns from the outside to the inside, but the center portion is recessed and the diameter goes from the center to both sides. This is because by processing into a larger shape, combustion gas remaining in the interior is smoothly discharged when combustion is performed on the grill, and combustion efficiency is increased. In addition, charcoal is generally grabbed with tongs and carried to the grill and firebed, but in the present invention, by performing such rotary lathe processing, when grabbing the central concave portion with tongs and carrying it, Since it becomes difficult to fall, the problem of dropping and breaking charcoal as in the past can be solved.

  When used as a fuel for barbecue, generally, a large number of firewood or charcoal is loaded and burned in the grill, but when loading firewood or charcoal having a constant cross-sectional area, according to the present invention, Since the portion is recessed, the air can be smoothly flowed in from the outside and the combustion efficiency can be improved.

  Further, in addition to processing by a rotary lathe, as shown in FIG. 1, a step of digging a hole in the length direction (axial direction) in the axial center portion of the cut raw wood to create a middle hole is performed. By forming a longitudinal bore in the center of the cut raw wood in this way, the area of contact with air can be increased and the initial combustion effect can be enhanced.

  Next, after the raw wood that has undergone the above-described cutting process is moved to the rapid high heat processing chamber, high heat processing is performed at a temperature of 150 ° C. to 230 ° C. for 5 hours to 24 hours. Even in the case of ordinary well-dried soot, the moisture content is about 10% to 18%, and the moisture in such soot burns incompletely due to a thermal reaction with the wood components during combustion, and a large amount As a result, a lot of sparks will be generated.

  In order to eliminate such problems, in the present invention, as described above, moisture in the raw wood and a part of the wood are obtained by high-temperature processing at a temperature of 150 to 230 ° C. for 5 to 24 hours. It produces a heat-treated soot that removes the components and significantly reduces the generation of smoke and sparks.

  The reason for maintaining the temperature at 150 ° C. or higher in this step is that hemicellulose, among the chemical components constituting the wood, undergoes thermal decomposition at a temperature of 150 ° C. or higher and changes the chemical and physical properties of the wood. However, this is because the water adsorption point is reduced through such a process, whereby the contraction and expansion rate are stably maintained and the durability is improved. In addition, the high heat processing in the present invention is performed at 230 ° C. or lower, and the reason for performing at 230 ° C. or lower is that cellulose is thermally decomposed at 240 ° C. to 350 ° C. among the constituent components of wood. Thus, when such decomposition of cellulose occurs, the strength is lowered, and the final product is easily broken. Therefore, in the present invention, the treatment is carried out at 230 ° C. or lower at which the thermal decomposition of cellulose does not occur.

  Table 1 below is a table comparing the composition of heat-treated firewood, raw material (firewood), and general charcoal that have undergone the processing process of the present invention. However, in Table 1, Case-1 is a case of heat treatment at 170 ° C. for 5 hours, and Case-2 is a case of heat treatment at 190 ° C. for 5 hours.

  From Table 1, the calorific value of the unit weight based on the weight ratio for each element can be obtained from the following formula (1) for calculating the calorific value from the element constituent ratio of the substance.

HHV _fuel = 0.3491C + 1.1783H-0.1034O-0.0151N + 0.1005S-0.0211A Formula (1)
However, HHV _fuel is the high calorific value (MJ / kg) of fuel, and A, C, H, N, O and S are weight ratios of ash, carbon, hydrogen, nitrogen, oxygen and sulfur components, respectively.

  As can be seen from Table 1, in the case of the general soot, the calorific value per unit weight is 19.5 MJ / kg, whereas the case-1 of the present invention is 21.0 MJ / kg, and the case-2 is 27.3 MJ / kg. It can be seen that the calorific value per unit weight is increased. Such an increase in calorific value means that a higher temperature can be maintained even with the same weight.

  However, the calorific value per unit weight is the highest in conventional charcoal, but in the case of charcoal, about 70% of the raw wood components are decomposed and volatilized in the high-temperature carbonization process from 600 ° C to 1200 ° C, which is the final product Is only about 30% of raw wood. The total calorific value of the final product obtained with 1 ton of raw wood is calculated as follows.

  As can be seen from Table 2, when producing heat-treated firewood having a carbon content of 50 (wt%) or more and less than 80 (wt%) according to the present invention, the total calorific value obtained from the input raw wood is higher than that of conventional charcoal. It can be seen that the calorific value is 2 to 2.3 times higher. Therefore, the heat-treated firewood according to the present invention can provide a higher calorific value per unit weight than ordinary firewood, and can increase the total calorific value obtained from raw wood input compared to conventional charcoal. It is more economical because it can.

  And in this high heat processing process, high heat processing is performed, performing humidity adjustment using steam injection in the range of 50%-80% of relative humidity with heating. In general, when wood is exposed to a high temperature for a long time, cracking occurs, and this phenomenon causes a decrease in hardness even after the final product is produced. Therefore, in the present invention, by performing heat processing using steam injection with a relative humidity of 50% to 80%, the hardness is extremely reduced even after the end product is created by preventing cracking of wood in this step. To prevent that.

  Moreover, in this embodiment, natural vegetable oil is apply | coated to the surface of an original tree before heat processing, and heat processing is performed after that. Even if the temperature in the rapid high heat processing chamber is set to a constant temperature, there are some temperature differences depending on the internal position, and the wood structure and material color can be changed depending on the position due to such temperature differences. For this reason, in this invention, vegetable oil is apply | coated to the surface of a raw wood, temperature is transmitted to the whole raw wood quickly and uniformly, and it processes so that a structure | tissue and a material color may change uniformly.

  Moreover, in the modification of this embodiment, vegetable oil which consists of aroma oils, such as lavender, rosemary, and chamomile, is used in whole or in part. Aroma oil is known to relieve mental and physical fatigue and cleanse the mind. Therefore, according to the present invention, by using vegetable oil containing aroma oil, such aroma aroma is emitted during combustion even after the heat-treated soot is produced. The effect of purifying is obtained.

  On the other hand, as the raw wood used in the present invention, the above-mentioned hardwoods such as cucumbers, acacia trees, birch and the like have been mentioned as an example. it can. Persimmon or cedar is known to contain the most phytoncide with functions such as antibacterial action, sedative action, deodorizing action and stress relieving action. Can produce phytoncide functions such as antibacterial action, sedative action, deodorizing action and stress relieving action, and can produce heat-treated koji that is stained with koji or cedar incense. .

  After performing the high heat processing step as described above, the temperature in the rapid high heat processing chamber is gradually decreased to room temperature for 5 to 15 hours. This is to prevent the phenomenon that the final product breaks due to a sudden temperature change.

  The heat-treated soot according to the present invention has an advantage that the initial ignition time is shortened compared to a general soot. FIG. 2 shows a comparison result of ignition times of heat-treated soot (heat-treated soot) produced by the production method of the present invention and general soot. As shown in FIG. 2, in the case of a general soot, it was ignited in 18 seconds under a temperature condition of 750 ° C., but the heat-treated soot of Example-1 of the present invention produced at 170 ° C. was 16 seconds and 190 ° C. It can be seen that the heat-treated soot of Example-2 of the present invention produced in 1 was ignited in 15 seconds. However, general hard coal with a carbon content close to 100% did not ignite at a temperature of 750 ° C. In this graph, the ignition time is shown in comparison with the result of the composition ratio (O / C) of carbon and oxygen, which are the components in the heat-treated soot.

  Meanwhile, FIG. 3 is a graph showing the calorific value with respect to the burning time of heat-treated soot, general soot and general charcoal manufactured by the manufacturing method of the present invention through a corn calorimeter test. In FIG. 3, the red line (rectangular connection line) is a heat-treated soot produced at 170 ° C. for 24 hours, and the green line (triangle connection line) is a heat-treated soot produced at 190 ° C. for 24 hours, The blue line (rhombic connecting line) is ordinary firewood (kunugi raw material), and the purple line (x connecting line) is general charcoal. As shown in this graph, in the heat-treated soot produced at 170 ° C. and 190 ° C., the lower the O / C ratio, the earlier the initial ignition time is. The heat-treated firewood manufactured at 170 ° C. (rectangular connecting line) shows a high calorific value because combustible gas is released inside the heat-treated firewood after a certain period of time and is produced at 190 ° C. The heat-treated soot (triangular connecting line) also shows a high calorific value due to the flammable gas that gradually flows out, unlike the general soot of the diamond connecting line. Such a phenomenon is judged to be useful for playing a role of fuel by causing gas to flow inside while preventing white smoke due to residual moisture by high heat processing.

  As described above, the heat-treated camping soot according to the present invention eliminates the problems of general soot used as a fuel for campfires and barbecues, shortens the initial ignition time, It has the advantage that the generation of sparks is reduced and the calorific value per unit weight is improved.

  Moreover, in the case of charcoal, there is a disadvantage that it is easy to break while generating soot, but in the present invention, there is no such problem, and an effect that it is more convenient to use than charcoal is obtained.

  Furthermore, in conventional camping firewood, conifers (pines) can hardly be used for reasons such as pine resin, but in the present invention, pine resin and the like are removed through a separate processing process as described above. Coniferous trees can also be used.

  Furthermore, the camping jar according to the present invention emits aroma aroma when used for campfire or yakiniku, and has a function of purifying the mind as well as relaxation of the mind and body.

  Although the present invention has been described with reference to the preferred embodiments, the present invention is not limited to the specific preferred embodiments described above, and the gist of the present invention described in the scope of the claims is removed. However, any person who has ordinary knowledge in the technical field to which the invention belongs can be implemented with various changes, modifications and corrections.

Claims (6)

Cutting the log with a certain length;
After the cut log is moved to a rapid high heat processing chamber, humidity control is performed using steam injection within a range of 50% to 80% relative humidity at a temperature of 150 ° C. to 230 ° C. for 5 hours to 24 hours. A process of performing high-heat processing while paralleling,
The quick high heat processing one scheduled period of the temperature gradually in the room comprises a step of reducing to a room temperature,
It has a carbon content of 50 wt% or more and less than 80 wt% in weight ratio, and it is characterized in that hemicellulose is pyrolyzed without causing pyrolysis of cellulose to shorten the initial ignition time and reduce the generation of smoke and sparks. A method for producing heat-treated camping firewood.   After the cutting step, the method further includes a step of cutting the cut log into a shape in which the central portion is recessed and the diameter increases from the center toward both sides, thereby facilitating transportation and handling and improving combustion efficiency. The method for producing a heat-treated camping hoe according to claim 1, which is improved. 3. The heat-treated camping hoe according to claim 1, wherein the high heat processing step is performed by applying a vegetable oil containing aroma oil to a surface of the cut raw wood. Manufacturing method.   3. The heat-treated camping kit according to claim 2, wherein the turning and cutting step further includes a step of forming a hole in the center of the cut raw wood in the length direction. Method. The raw wood is heat-treated method for producing a camping firewood claimed in any one of 4, characterized in that it comprises a softwood. A heat-treated camping hoe manufactured by the manufacturing method according to any one of claims 1 to 5 .