KR102470399B1 - The fuel composition including the cast of black soldier fly with palm shell - Google Patents

Abstract

The present invention relates to a composition for fuel comprising manure and coconut shells in blackcurrant, and more particularly, to a composition for heating and the like as a solid fuel including manure, coconut husk, wood waste, oil cake and molding binder in black soldier flea. It relates to fuel composition.
The composition for fuel of the present invention increases economic feasibility by recycling resources by using fecal soil and coconut shells for black soldier flies, exhibits excellent fuel quality due to increased calorific value, and improves convenience in transportation and storage due to excellent durability such as tensile strength. It works.

Description

The fuel composition including the cast of black soldier fly with palm shell}

The present invention relates to a composition for fuel comprising manure and coconut husk in black soldier faeces, and more particularly, to a solid fuel composition including manure, coconut husk, wood waste, oil cake and molding binder in black soldier faeces, which can be used for heating, etc. It relates to fuel composition.

Currently, organic waste such as food waste discharged from homes and restaurants, organic waste generated from industrial sites, and livestock manure and human waste generated from barns can cause serious environmental problems in soil and rivers when discharged without treatment.

Conventionally, a method of recycling organic waste into livestock feed or compost through a specific treatment process, a method of landfilling in a certain area or dumping in the sea has been mainly used, but in this case, the problem of low economic feasibility in terms of installation cost and maintenance cost of the treatment device there is In addition, when the discharged material is used as feed, side effects such as mass formation are large, and in the case of composting, there are problems such as reheating and ineffectiveness imbalance.

In addition, in the case of Korea, which is highly dependent on oil for energy, it is experiencing many national difficulties due to the recent unstable international oil price market. In order to overcome this, a number of policies on green energy and renewable energy development are being announced as a national policy, and companies' efforts to realize them are also urgent.

Wood pellets, one of the related technologies, have excellent combustion efficiency due to high density, excellent ignition and preservation properties, small size, easy storage and transportation, and low sulfur and ash content, and are environmentally friendly.

However, since wood pellets use wood or wood by-products as the main raw material, the production and cost competitiveness of wood pellets is poor in Korea, where wood resources are not abundant, and when manufacturing pellets using hay such as straw, lignin The durability of the pellets is low due to the low content, and there are disadvantages in that an additional binder or the like must be used.

Accordingly, Korean Patent Registration No. 10-1771210 discloses a composition for fuel containing feces and oil in dongae, etc., but there is a need to improve its performance.

Republic of Korea Patent No. 10-1771210

The present invention has been made to solve the above problems, and an object of the present invention is to provide a composition for fuel with improved performance by additionally using recycled materials capable of improving the performance of manure and fuel in dongae.

The present invention provides a fuel composition comprising 10 to 100 parts by weight of coconut shells, 10 to 50 parts by weight of wood waste, 10 to 50 parts by weight of seed meal, and 1 to 30 parts by weight of a molding binder, based on 100 parts by weight of manure soil for Dongae, etc. do.

The black soldier faeces excretion soil may be obtained by removing the black soldier faeces from a product obtained while the black soldier faeces treats organic waste.

The soil for dongae, etc. may have a moisture content of 1 to 20%.

The coconut shell and seed meal may be mixed in a weight ratio of 1:0.1 to 1.

The seed cake may be any one selected from the group consisting of sesame meal, perilla meal, soybean meal, corn meal, rapeseed meal, rice bran meal, cottonseed meal, flax meal, grape seed meal, olive seed meal, coffee meal, and sunflower seed meal.

The seed cake may be mixed with sesame meal and coffee waste at a weight ratio of 1:0.5 to 1.

The binder may be starch, modified starch, dextrin, cellulose, modified cellulose, guar gum, polyvinyl alcohol, waste molasses, or a mixture thereof.

The composition for fuel of the present invention increases economic feasibility by recycling resources by using manure soil and coconut husk for blackcurrant, exhibits excellent fuel quality due to increased calorific value, and improves convenience such as transportation and storage due to excellent durability such as tensile strength. It works.

In addition, the fuel composition of the present invention can secure calorific value while significantly reducing the content of wood waste compared to conventionally used fuels, and can minimize soot caused by coconut shells, so it can be widely used as an economical and environmentally friendly fuel. can

Hereinafter, the present invention will be described in detail with reference to the drawings. The terms or words used in this specification and claims should not be construed as being limited to ordinary or dictionary meanings, and the inventors may appropriately define the concept of terms in order to explain their invention in the best way. It should be interpreted as a meaning and concept consistent with the technical idea of the present invention based on the principle that there is.

The present invention provides a composition for fuel comprising black soldier faeces, manure, coconut shells, wood waste, seed meal, and a molding binder.

The black soldier faeces excretion soil may preferably include one obtained by treating organic waste with black soldier faeces.

As an example, the manure soil in Dongae, etc. may mean that the larva in Dongae, etc. ingests and digests organic waste and then excretes it.

The black soldier faeces excreta may be a whole product obtained by treating organic waste with black soldier faeces, or may be a product obtained by removing the black soldier faeces by separating the black soldier faeces from the manure soil after the preparation of the faeces.

In general, Dongae etc. has a period of 37 to 41 days to grow from an egg to an adult, and a period of a larval state serving as a decomposer is about 14 days.

If 5,000 caterpillars are added to 10 kg of food waste, more than 80% of the food waste is decomposed in about 5 days, and the decomposed food waste is reduced by about 42% in volume and about 70% in weight before the larvae are introduced. Since black soldier flies have a longer period of time to decompose organic waste resources than earthworms or houseflies, black soldier flies have a much more effective advantage in treating organic waste.

Dongae larvae are difficult to live at a temperature of less than about 27 ° C, and produce fecal soil by processing organic waste while actively moving at a temperature of about 30 ° C to 42 ° C. In addition, the larvae of Dongae etc. have a habit of crawling out to find a dry place to become a pupa after about 14 days, which is the period of the larvae capable of decomposing organic waste.

The organic waste may be any one or more selected from the group consisting of livestock manure, organic sludge, and food waste, but is not limited thereto.

The black soldier faeces excretion soil may be obtained by treating organic waste with eggs, larvae, or a mixture thereof of black soldier faeces.

The manure soil may have a moisture content of 1 to 20%, preferably 7 to 15%.

If the moisture content of the soil is less than the range described above, it is advantageous in terms of combustion efficiency, but the time and cost required for drying increase and the stability after molding deteriorates. Defects and the like may occur in the composition.

The black manure soil may contain 1 to 100 parts by weight, preferably 10 to 90 parts by weight, and more preferably 30 to 80 parts by weight, based on 100 parts by weight of the solid content of the fuel composition. can

In addition, the composition for fuel according to the present invention includes coconut shells.

The coconut shell refers to a palm by-product remaining after extracting palm oil from the coconut fruit.

Although the coconut shell is a by-product discarded in the processing process, most of the components are composed of fibers capable of releasing a large amount of heat upon combustion, and serve to supplement the calorific value of the composition for fuel.

The palm may be coco palm, date palm, nipa palm, etc., but is not limited thereto.

The coconut shells can be added in ground form, in the form of chars or powdered chars.

When the coconut shell is added as a powdered carbide, a binder may be mixed for bonding strength.

The coconut shell may be included in 10 to 100 parts by weight, preferably 15 to 60 parts by weight, more preferably 20 to 40 parts by weight, and most preferably 25 to 35 parts by weight, based on 100 parts by weight of manure soil. can be included

In addition, the composition for fuel according to the present invention includes wood waste.

The wood waste may be at least one selected from the group consisting of sawdust, wood chips, pulp chips, and forest by-products, but is not limited thereto.

The wood waste may be processed to facilitate combustion in the form of pulverized or shredded material, preferably in a form selected from the group consisting of powder, sawdust, wood chips, shavings, splinter, chipping, shaving or cutting. .

The wood waste may be included in 10 to 50 parts by weight, preferably 15 to 45 parts by weight, more preferably 20 to 40 parts by weight, and most preferably 25 to 35 parts by weight, based on 100 parts by weight of manure soil. can

In addition, the composition for fuel according to the present invention includes seed cake.

The oil cake means what remains after oil is squeezed from the seeds of plants, and sesame meal, perilla meal, soybean meal, corn meal, rapeseed meal, rice bran meal, cottonseed meal, flax meal, grape seed meal, olive seed meal, coffee It may be any one selected from the group consisting of gourd and sunflower seed meal, and preferably may be sesame meal, perilla meal, coffee meal, or a mixture thereof.

The coconut shell is a problem because soot (tar) is generated during combustion, but the oil cake can adsorb aromatic compounds present in the tar, preventing smoke generation of the fuel composition and implementing more environmentally friendly fuel. . In addition, the seed cake may play a role of supplementing the calorific value as an environmentally friendly material, and may be added in a pulverized form.

In general, when milking sesame seeds, about 42 to 45% of the weight is produced as sesame oil, and in the case of perilla seeds, about 40% of the weight is produced as perilla oil. Sesame meal and perilla meal produced after milking contain 10 to 15% of oil (fat). In addition, there is an advantage that there is no perishability as the moisture content is lower than 0.5%.

To this end, the coconut shell and seed meal may be mixed in a weight ratio of 1:0.1 to 1, preferably 1:0.2 to 0.9, more preferably 1:0.3 to 0.8, and most preferably 1:0.4 to They can be mixed in a weight ratio of 0.6.

Sesame meal and coffee grounds may be mixed in a weight ratio of 1:0.5 to 2, preferably 1:0.6 to 1.8, more preferably 1:0.8 to 1.5, and most preferably 1:0.9 to 1.2. It can be mixed in a weight ratio of

The seed cake may be included in 10 to 50 parts by weight, preferably 15 to 40 parts by weight, more preferably 18 to 30 parts by weight, and most preferably 20 to 25 parts by weight, based on 100 parts by weight of manure soil. have.

In addition, the sesame meal and coffee waste may be included in 1 to 25 parts by weight, preferably 5 to 20 parts by weight, and most preferably 10 to 15 parts by weight, based on 100 parts by weight of manure soil. .

The fuel composition may be molded to have a predetermined shape, and this may be achieved by a molding binder.

The molding binder may be starch, modified starch, dextrin, cellulose, modified cellulose, guar gum, polyvinyl alcohol, waste molasses, or a mixture thereof, preferably starch, guar gum, or polyvinyl alcohol.

The molding binder may be included in an amount of 1 to 30 parts by weight, preferably 5 to 25 parts by weight, more preferably 8 to 20 parts by weight, and most preferably 10 to 15 parts by weight, based on 100 parts by weight of manure soil. It can be selected appropriately in consideration of molding strength and combustion efficiency.

The moisture content is reduced by the heat applied during the molding, and considering thermal efficiency, the moisture content of the fuel composition after molding may be 1 to 15%, preferably 1 to 10%.

The composition for fuel according to the present invention may further include fats and oils, and any fats and oils may be used as long as they are added to the composition for solid fuels to help combustion. Specifically, animal fat or vegetable oil may be used, animal oil may be Dongae, etc., and vegetable oil may be palm oil, palm oil, and the like.

The fat or oil may be characterized in that at least one selected from the group consisting of oil, palm oil, and coconut oil for blackcurrant etc., but is not limited thereto.

The maintenance of the black soldier faeces can be prepared using the black soldier fleas generated in the process of producing manure soil.

In particular, since the larvae of Dongae, etc. obtained after processing organic waste can be used as a raw material for oil extraction, it has the advantage of being very economical.

The fat and oil of the black soldier flies can be added to a composition for fuel to secure a constant exothermic performance, and to prepare a fuel composition that does not emit soot or odor during combustion.

In addition, when the fuel composition is solidified, Dongae oil can not only lower the molding pressure by lubricating the fuel composition during the molding process, but also increase durability and thermal efficiency by reducing defects in the solidified fuel composition and increasing the density.

The Dongae deungae maintenance may be included in 1 to 20 parts by weight, preferably 5 to 10 parts by weight, based on 100 parts by weight of the manure soil.

The fuel composition may be molded into pellets, chips, or powder form.

The fuel composition may be a solid fuel for domestic use or a solid fuel for thermal power plants.

In addition, the present invention includes a step of producing feces in Dongae, etc. by treating organic waste with Dongae, etc.;

Drying the manure soil on the black soldier faeces to prepare manure soil in the dried winter soldier faeces having a water content of 1 to 20%;

Adding coconut husk, wood waste, and seed cake to the dried black soldier faeces to the manure soil to prepare a manure soil mixture for Dongae, etc.; and

Provided is a method for producing a fuel composition comprising the step of molding the soil mixture on the blackcurrant.

The step of manufacturing black soldier faeces may be performed by adding eggs, larvae, or a mixture thereof to organic waste, and rearing the black soldier faeces to obtain manure.

The number of black soldier flies added to the organic waste may be 100 to 1,000 based on 1 kg of unit weight of the organic waste, and breeding of the black soldier flies may be performed at a temperature of 30 ° C to 42 ° C for 3 to 14 days.

The method for preparing the fuel composition may additionally include a step of separating black soldier fleas from the manure soil after the preparation of the manure soil.

The step of preparing the manure soil from the dried black soldier faeces may be performed by drying the manure soil at a temperature of 150 to 300 ° C. for 1 to 30 minutes, preferably at a temperature of 150 to 300 ° C. for 1 to 20 minutes. It may be performed by drying, more preferably by drying at a temperature of 150 to 300 ° C. for 1 to 10 minutes.

In the step of mixing coconut shells, wood waste and seed meal with the dried black soldier faeces, the mixed coconut shells may be pulverized coconut shells.

The molding of the mixture is a step of allowing the soil mixture to have a predetermined shape in the dried blackcurrant, etc., and may be performed by additionally adding a molding binder.

The fuel composition may be molded in the form of pellets, chips, or powder, preferably in the form of pellets.

The moisture content is reduced by the heat applied during the molding, and considering thermal efficiency, the moisture content of the fuel composition after molding may be 1 to 15%, preferably 1 to 10%.

For the molding, a conventional extrusion molding machine that can be used for producing pellets such as a circular die type pellet molding machine, a flat die type pellet molding machine, and the like can be used.

The above description is merely an example of the technical idea of the present invention, and various modifications and variations can be made to those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed according to the following claims, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

Hereinafter, the present invention will be described in more detail through examples. These examples are only for explaining the present invention in more detail, and it will be apparent to those skilled in the art that the scope of the present invention is not limited by these examples according to the gist of the present invention. .

Preparation Example 1: Production of larvae of Dongae etc.

Adult blackbirds were introduced into the spawning grounds at an input density of 8,000 to 12,000 (cm ³ / head). After 3 days have elapsed since the adult blackbird was introduced to the blackbird breeding ground, a 20% humidity 20% mixture of food waste and sawdust was added to the blackbird spawning ground, and a hole of 3 to 5 mm was added to the wood. A scattering induction device pierced through was placed on the attracting medium.

After the egg masses were spawned in the hole of the spawning induction device, they were collected, maintained at 14L: 10D light conditions for 4 days, protected at a temperature of 27 ° C and a humidity of 60%, and hatched to obtain larvae of Dongae.

Preparation Example 2: Manufacture of feces for Dongae, etc.

10 kg of food waste was prepared, 5000 Dongae larvae obtained in Preparation Example 1 were added, and the larvae were reared for 3 days while maintaining the temperature at 30 ° C. During breeding, 3 kg of fecal soil was obtained from Dongae, which was excreted after the larvae ingested and digested food waste.

A temperature of 43 ° C. was applied to the obtained manure soil so that the larvae of black soldier fleas crawled out of the manure soil excreted by the larvae of Dongae etc. to separate the black soldier faeces from the manure soil of Dongae etc.

The manure from which the black soldier faeces were separated was dried with dry air at a temperature of 250° C. for 5 minutes to obtain dried black soldier faeces having a moisture content of 11%.

Example 1: Manufacture of fecal soil fuel pellets in Dongae etc.

First, the husk of the coconut fruit was pulverized into 100 mesh using a compression mill.

100 parts by weight of manure soil, 40 parts by weight of coconut shells, 30 parts by weight of wood waste, 10 parts by weight of sesame meal, 10 parts by weight of coffee waste, and 10 parts by weight of guar gum were mixed with Dongae, etc., and put into a flat die type pellet molding machine. Pellets having a diameter of about 8 mm and a length of about 30 mm were prepared while maintaining the temperature and molding pressure of the molding machine at about 85° C. and about 4,500 kgf/cm ² .

Example 2: Manufacture of black soldier faeces excreta fuel pellets containing black soldier fume oil

Pellets were prepared in the same manner as in Example 1, except that 5 parts by weight of fat was added to the pressed and milked Dongae, etc. after drying and heating the larvae in Example 1.

Experimental Example 1: Measurement of calorific value of fuel pellets

The calorific value of the prepared pellets was calculated by putting 0.5 g of the dried sample in a calorimeter (Parr 6 calorimeter), filling with oxygen, and igniting, and calculating the calorific value from the temperature change before and after combustion.

The results are shown in Table 1 below.

fuel pellets Calorific value (kcal/kg) Example 1 4,320 Example 2 4,510

As shown in Table 1, the fuel pellets according to the present invention exhibited a high calorific value exceeding Grade 1, which is the quality standard of wood pellets announced by the National Institute of Forest Science.

In addition, it was confirmed with the naked eye that soot generated in the heating process was greatly reduced compared to generally commercially available wood pellets.

Experimental Example 2: Measurement of ash content of fuel pellets

The ash content of the prepared pellets was tested by burning 1 g of the sample in a carbonization furnace (Furnace) by the temperature elevation schedule (60 minutes at 250 ° C, 120 minutes at 575 ° C) determined in the test method specified in the quality standards for wood pellets. After that, the weight of the residue was measured.

The results are shown in Table 2 below.

fuel pellets Ash content (%) Example 1 0.32 Example 2 0.33

As shown in Table 2, it was confirmed that the amount of ash was less than 0.7% of grade 1, which is the quality standard of wood pellets announced by the National Institute of Forest Science.

Experimental Example 3: Moisture content measurement of fuel pellets

In order to measure the moisture content of the prepared pellets, the weighing bottle with a cover was dried at 105 ± 3 ° C and then cooled to room temperature in a desiccator. 20 g of the prepared pellets were put in a uniform layer in a weighing bottle and weighed including the cover. After that, the cover was removed, dried at a temperature of 105 ± 3 ° C until the weight of the plate containing the sample did not change, and then covered in an oven and cooled to room temperature in a desiccator. The moisture content was measured through this process, which is shown in Table 3 below.

fuel pellets Moisture content (%) Example 1 8.6 Example 2 8.8

As shown in Table 3, it was confirmed that the moisture content of 10% or less of grade 1, which is the quality standard of wood pellets notified by the National Institute of Forest Science, was confirmed.

Claims (7)

Regarding 100 parts by weight of manure soil for Dongae, etc.
20 to 40 parts by weight of coconut husk, 25 to 35 parts by weight of wood waste, 20 to 25 parts by weight of seed meal, 10 to 15 parts by weight of a molding binder, and 5 to 10 parts by weight of Dongae oil,
The coconut shell and seed meal are mixed in a weight ratio of 1: 0.4 to 0.6,
The seed cake is a fuel composition, characterized in that the sesame meal and coffee waste are mixed in a weight ratio of 1: 0.9 to 1.2.
According to claim 1,
The fuel composition characterized in that the black soldier faeces soil is removed from the product obtained while the black soldier fouling is treated with organic waste.
According to claim 1,
The fuel composition, characterized in that the moisture content of the dongae etc. is 1 to 20%.
delete delete delete According to claim 1,
The fuel composition, characterized in that the molding binder is starch, modified starch, dextrin, cellulose, modified cellulose, guar gum, polyvinyl alcohol, waste molasses or a mixture thereof.