WO2015010232A1

WO2015010232A1 - Coco peat fuel and preparation method therefor

Info

Publication number: WO2015010232A1
Application number: PCT/CN2013/079766
Authority: WO
Inventors: 周文洪
Original assignee: 唐锋机电科技（深圳）有限公司
Priority date: 2013-07-22
Filing date: 2013-07-22
Publication date: 2015-01-29

Abstract

A coco peat fuel and a preparation method therefor. The coco peat fuel is a solid fuel compression-molded from coco peat that serves as a raw material. Also, the preparation method for the coco peat fuel comprises the following steps: drying treatment of the coco peat; and, compression molding of the coco peat. The coco peat fuel is inexpensive and environmentally friendly, has a high calorific value as a fuel, and produces minimal amount of ash when combusted.

Description

Coco peat fuel and preparation method thereof

Technical field

The invention belongs to the technical field of solid fuels, and in particular relates to a coco peat fuel and a preparation method thereof.

Background technique

With the development of social economy, people's demand for fuel is getting higher and higher. Due to limited reserves, oil, natural gas and coal are continuously decreasing, and they are limited by various conditions such as distribution and production, resulting in higher costs. In addition, these fuel components contain some impurities such as sulfur, nitrogen, etc., so during the combustion process, pollutants such as sulfur dioxide and nitrogen dioxide are emitted. These gases dissolve in water and form acid rain, which causes harm to the environment; Dust is easy to cause air pollution.

Coconut is a common tropical fruit, which is abundant in many countries and regions, such as India, Sri Lanka, Malaysia, the Philippines and Hainan. During the processing of coconuts, a large amount of cocoin by-products are produced during the processing of the coconut shreds. Usually one kilogram of coconut shell, after processing, can only get about 0.33 kg of shredded coconut, but it will produce about 0.66 kg of coco peat. For this reason, countries and regions that produce coconuts produce large amounts of cocoa by-products every year. Due to the small density, difficult to dry, and difficult to transport, the direct utilization of coco peat is greatly limited. In addition to a small amount of coco peat for plant cultivation, a large amount of coco peat is directly discarded as waste. If it is often discarded in coconut processing plants, roadsides and even rivers, it affects people's lives and gives people life and travel. On the other hand, it also causes environmental pollution. After a long period of accumulation, the coco peat rots and easily breeds bacteria, which affects people's health. The cocoons discarded in the road are also easy to block the river, which is easy to cause in the rainy season. Natural disasters, while causing water pollution. Therefore, how to recycle the coco peat as waste is an urgent problem to be solved.

technical problem

The object of the present invention is to provide a coco peat fuel, which aims to solve the problem of low utilization rate of coconut meal and environmental pollution.

Another object of the present invention is to provide a process for the preparation of a coco peat fuel which can effectively recycle coco peat.

Technical solution

In order to achieve the object of the above invention, the technical solution of the present invention is as follows:

A coco peat fuel is a solid fuel that is compression molded from coco peat.

And, a method for preparing a coco peat fuel, comprising the steps of:

The coco peat is removed and dried;

The dried coco peat is compression molded to obtain coco peat fuel.

Beneficial effect

The above-mentioned coconut milk fuel provided by the invention has the advantages of environmental protection, high calorific value and low cost, and effectively solves the problem of low utilization rate of coco peat.

The invention provides the preparation method of the above-mentioned coco peat fuel with simple operation process, low cost, favorable industrial production, and waste waste cocoon into waste, effectively avoiding environmental pollution.

Embodiments of the invention

In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clear, the present invention will be further described in detail below with reference to the embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Embodiments of the present invention provide a coco peat fuel which is a solid fuel which is compression-molded using coco peat as a raw material.

Specifically, the coconut meal as the raw material is derived from the collected waste coconut cocoa or the discarded coconut shell. When the waste coconut shell is used as the raw material, the coconut shell is first processed by the coir wire spinning machine to separate the fibers on the coconut shell. , using its by-product coco peat, or directly crushing the coconut shell to obtain coco peat.

As a preferred embodiment, the coco peat has a density of 0.9-1.6 Mt/m3. After many studies by the inventors, it has been found that the density of coco peat solid fuel has a certain influence on its combustion effect, preservation and transportation. When the pressed coco peat fuel density is less than 0.9 At mt/m3, the coco peat fuel is often easily broken during transportation or handling due to the relatively loose and tight tightness of the coco peat filling. Especially in a humid environment, the density of the loose coco peat fuel is easily loosened and loosened; When coco peat fuel density is greater than 1.6 At mt/m3, it is easy to cause insufficient combustion.

As a preferred embodiment, the above-mentioned coconut milk fuel has a humidity of 18-30. Kg/m3. When the humidity is too high, on the one hand, the coco peat fuel is not easy to burn, and it is easy to expand, which causes the coco peat fuel to be loose. In addition, it is easy to cause the cocoon fuel to rot; when the humidity is too low, the coco peat fuel is prone to deformation and surface. Cracks are generated.

In the embodiment of the present invention, the coco peat fuel can be pressed into a shaped fuel such as a strip, a block, or a pellet according to the needs of different users. Of course, it should be understood that the coco peat fuel made from coco peat as a raw material without changing its shape as a fuel function is within the scope of the present invention.

As a specific embodiment, the strip-shaped coconut milk fuel has a diameter of 7.5 to 8.5 mm and a length of 40 to 80. Mm. The coco peat fuel prepared in this specification can increase its contact area with air when burning, improve the burning rate, and also facilitate packaging and transportation. Of course, the strip of coco peat fuel is only one embodiment of the present invention, as long as other shapes of coco peat fuel made from coco peat are within the scope of the present invention.

The raw material of the above-mentioned coconut milk fuel is derived from natural coconut shell, and its main component is cellulose, which does not contain toxic substances. Therefore, when it is burned as a fuel, carbon dioxide and water are generated, and no toxic gas is generated, so it is used as a fuel. Safe and environmentally friendly. Since coco peat contains characteristic coconut oil, it can promote the burning of coco peat. Therefore, the coco peat can achieve a high burning rate without adding any chemical oxidizer or other additives. It has been determined that the calorific value of the coconut milk fuel of the above embodiment is 4000. Kcal/kg or more, therefore, the coco peat fuel has a high combustion value, can be fully burned, and has less ash and no dust after combustion, so that industrial use of coco peat fuel avoids pollution to the factory and the surrounding environment. . After testing, the nitrogen oxides, dust emissions, Ringermann concentration, etc. generated during the combustion process are far lower than the coal emissions, and are within the national standard, and have the conditions of environmentally friendly fuel. In addition, the presence of coconut oil gives the cocoa fuel a unique aroma when burned.

Therefore, the coco peat fuel provided by the above embodiment uses the cheap natural organic medium-coco peat as a raw material, solves the problem of environmental pollution and inconvenience caused by the waste of coco peat in some places, and fully utilizes cocoon resources to prepare fuel. The cost is low, and the obtained cocoon fuel has high calorific value, environmental protection and practicality, and has less ash and no pollution after burning, such as cooking, heating fuel, industrial fuel, and good economic and environmental effects. . Moreover, compared with liquid fuel, the above-mentioned coco peat fuel has no leakage problem during transportation and use, thereby improving safety in transportation and use. In addition, the coco peat is compressed, storage space is small, easy to transport, greatly reducing storage and transportation costs.

Correspondingly, an embodiment of the present invention provides a method for preparing a coco peat fuel, which mainly comprises the following steps:

S01. Drying treatment of coco peat: the collected coco peat is decontaminated and dried;

S02. Compression molding of coco peat: The coco peat dried by the step S01 is compression-molded to obtain coco peat fuel.

Specifically, in the above step S01, the collected coconut cocoons are mostly cocoons that are discarded in processing fields, roads, and even rivers, and are inevitably mixed with impurities such as leaves, branches, stones, etc. necessary. The impurity removal method can be treated by sieving. By sieving, it can effectively filter out impurities such as leaves, branches, stones and other impurities mixed in the coco peat, purify the coco peat, and on the other hand, the density of the compressed fuel prepared by using the sieved coco peat as a raw material. Uniformity is better. Of course, the impurity removal treatment can also be processed by other commonly used methods in the art, as long as the purpose of impurity removal can be achieved. In addition, the dried coco peat material may be subjected to a further sieving treatment to further remove impurities.

Because the cocoon has a small density and a fluffy structure, its water holding capacity is very strong, and the collected coco peat has a high water content. Therefore, the coco peat material needs to be dried. It is precisely because of this characteristic of coco peat that its drying has certain difficulties. When it is naturally dried, not only the drying time is long, the effect is poor, the efficiency is extremely low, and the coco peat fuel obtained by drying is loose. In order to dry the coco peat to a reasonable degree and to improve the drying efficiency of the coco peat, the method for drying the coco peat in the above step S01 is preferably as follows:

The method for drying the coco peat is as follows: the coco peat material is treated by rolling and dewatering, and then dried, wherein the cocoa content after the crushing and dewatering treatment has a water content of 30-35%. In the above drying method of coco peat, the drying temperature is 200-400 ° C; the drying temperature is too low, which is not conducive to sufficient drying of coco peat, and the drying time is obviously prolonged. Since the coco peat raw material is unevenly dried, the prepared solid wood fuel tends to cause deformation or cracking.

The above drying method of the coco peat may be a drying method such as dryer drying or blast treatment. As a preferred embodiment, the above drying method is drying in a cyclone furnace by a cyclone dryer. Of course, it should be understood that other drying means that can be used to dry coco peat in the art are also within the scope of the embodiments of the present invention.

In the preparation process of the coco peat fuel according to the embodiment of the present invention, the moisture content of the coco peat after drying treatment is 15-20%. The coco peat fuel made from the dried coco peat has a greatly reduced water content and enhanced flammability. In addition, the dried coco peat fuel is tightly structured to facilitate the storage and transportation of coco peat fuel.

In the above step S02, in order to obtain a coconut milk fuel of a suitable density, in the preferred embodiment, the pressure of the pressed coconut granules is controlled at 150-800. In the range of T, the temperature is 100-130 °C. The cocoon fuel produced by the low pressure has a low density, and the cocoon fuel has a loose texture, is easily broken, and has a large volume, which increases the difficulty of transportation. In addition, the texture of the crispy coco peat fuel, volatile substances are easy to overflow, so the combustion reaction can be carried out on the surface and inside of the fuel at the same time, when the supply of air in the stove is insufficient, it is easy to cause insufficient combustion reaction inside the fuel, thereby increasing the black The production of smoke. When the pressure is too high, not only the requirements for the production equipment are increased, but also the solid oil of the coco peat is prepared to have high compactness and is not easy to be fully burned.

The cocoon granules obtained by the above treatment are compression-molded to obtain solid coco peat fuel of different shapes and specifications. The method of mechanical extrusion includes extrusion molding, press molding, and the like. Of course, it should be understood that compression methods that can be used in the art to compress coconut palm to prepare coco solid fuel are within the scope of the present invention.

The preparation method of the cocoon fuel provided by the embodiment of the invention has the advantages of simple process, full automation, low cost and strong operability.

Example 1

The waste coconut shell is collected, and the fibers on the coconut shell are separated and utilized to obtain a cocoa by-product. After the coco peat is sieved to remove impurities, it is dried. The drying method is specifically: the coconut coco raw material is subjected to crushing and water removal treatment to obtain a coco peat having a water content of 30-32%, and then dried at 200-400 ° C to obtain a dried coco peat having a water content of 15-20%. After drying, the coco peat is transferred to the distributor, and the gas in the coco peat is removed by a suction fan, and then the material is divided and extruded by a granulating machine. The pressure is 150-800 during extrusion molding. Within the T range, the molded coco peat fuel is obtained and finally packaged for transportation.

The strip-shaped coconut milk fuel prepared by the above method has a density of 1.2 mt/m2 and a humidity of 18-30. Kg/m3, solid shaped fuel with a diameter of 8.0 mm and a length of 65 mm.

Example 2

The discarded coconut shells are collected and the coconut shell is crushed to obtain coco peat. After the coco peat is sieved to remove impurities, it is dried. The drying method is specifically: the coconut coco raw material is subjected to crushing and water removal treatment to obtain a coco peat having a water content of 31-34%, and then dried by a cyclone pipe dryer to obtain a dried coconut having a water content of 15-20%. bran. After the drying, the coco peat is sieved again, the impurities are removed, the coco peat is transferred to the distributor, the gas in the coco peat is removed by an exhaust fan, and then the material is divided and compressed by a granulating machine. Pressure control at 150-800 during molding Within the T range, the molded coco peat fuel is obtained and finally packaged for transportation.

The bulk solid molding fuel prepared by the above method has a density of 1.3 mt/m2 and a humidity of 18-30. Kg/m3.

Example 3

The discarded coco peat is collected, and the coco peat is sieved to remove impurities and dried. The drying method is specifically: the coconut coco raw material is subjected to crushing and water removal treatment to obtain a coco peat having a water content of 31-35%, and then dried at 300-400 ° C to obtain a dried coco peat having a water content of 15-20%. . Transfer the coco peat to the distributor, remove the gas in the coco peat with an exhaust fan, and then press and form the granule machine. The pressure during compression molding is 150-800. T, the temperature is 100-130 ° C, the formed coconut milk fuel is obtained, and finally packaged and transported.

The bulk solid molding fuel prepared by the above method has a density of 1.4 mt/m2 and a humidity of 18-30. Kg/m3.

Example 4

The discarded coco peat is collected, and the coco peat is sieved to remove impurities and dried. The drying method is specifically: the coconut coco raw material is subjected to crushing and water removal treatment to obtain a coco peat having a water content of 30-35%, and then dried by a cyclone pipe dryer to obtain a dry coconut having a water content of 15-20%. bran. After the drying, the coco peat is sieved again to remove impurities; the coco peat is transferred to the distributor, and the gas in the coco peat is removed by an exhaust fan, and then divided into pellets, pressed and formed by a granulating machine, and pressed. 150-800 when molding T, the temperature is 100-130 ° C, the formed coconut milk fuel is obtained, and finally packaged and transported.

The strip-shaped coconut milk fuel prepared by the above method has a density of 1.2 mt/m2 and a humidity of 18-30. Kg/m3, solid shaped fuel with a diameter of 8.5 mm and a length of 70 mm.

Example 5

The waste coconut shell is collected, and the fibers on the coconut shell are separated and utilized to obtain a cocoa by-product. After the coco peat is sieved to remove impurities, it is dried. The drying method is specifically: the coco peat raw material is subjected to crushing and water removal treatment to obtain coco peat having a water content of 33-35%, and then dried by a cyclone pipe dryer at 250-400 ° C to obtain a water content of 15- 20% dry coco peat. After drying, the coco peat is transferred to the feeder, and the gas in the coco peat is removed by an exhaust fan, and then the material is divided and extruded by a granulating machine, and the pressure is 150-800 during extrusion molding. T, the temperature is 100-130 ° C, the formed coconut milk fuel is obtained, and finally packaged and transported.

The strip-shaped coconut milk fuel prepared by the above method has a density of 1.2 mt/m2 and a humidity of 18-30. Kg/m3, solid shaped fuel with a diameter of 7.8 mm and a length of 75 mm.

Example 6

The discarded coconut shells are collected and the coconut shell is crushed to obtain coco peat. After the coco peat is sieved to remove impurities, it is dried. The drying method is specifically: the coconut coco raw material is subjected to crushing and water removal treatment to obtain coco peat having a water content of 30-35%, and then dried by a cyclone pipe dryer at 200-350 ° C to obtain a water content of 15- 20% dry coco peat. After drying, the coco peat is transferred to the feeder, and the gas in the coco peat is removed by an exhaust fan, and then the material is divided and extruded by a granulating machine, and the pressure is 150-800 during extrusion molding. T, the temperature is 100-130 ° C, the formed coconut milk fuel is obtained, and finally packaged and transported.

The strip-shaped coconut milk fuel prepared by the above method has a density of 1.3 mt/m2 and a humidity of 18-30. Kg/m3, solid shaped fuel with a diameter of 7.8 mm and a length of 78 mm.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. Within the scope.

Claims

A coco peat fuel characterized in that the coco peat fuel is a solid fuel which is compression-molded from coco peat.
A coco peat fuel according to claim 1 wherein said coco peat fuel has a density of from 0.9 to 1.6 mt/m3.
The coco peat fuel according to claim 1, wherein the coco peat fuel has a humidity of 18 to 30 kg/m3.
The coco peat fuel according to claim 1, wherein the cocoon fuel has a calorific value of 4000 kcal/kg or more.
A coco peat fuel according to any one of claims 1 to 4, wherein the coco peat fuel is a strip, block or granular fuel.
A method for preparing a coco peat fuel, comprising the steps of:

The coco peat is removed and dried;

The dried coco peat is compression molded to obtain coco peat fuel.
The method for preparing a coco peat fuel according to claim 6, wherein the method for drying the coco peat is: after the coco peat material is treated by rolling and dewatering, and then dried, wherein the cocoa is dried. The dry treatment temperature is 200-400 ° C, and the dried coconut water has a moisture content of 15-20%.
The method for producing a coco peat according to claim 6 or 7, wherein the compression molding method is extrusion molding or press molding.
The method for preparing a coco peat fuel according to claim 6 or 7, wherein the pressure of the coco ply compression molding is 150-800. T, the temperature is 100-130 ° C.
The method for producing a coco peat according to claim 6 or 7, wherein before the step of compressing the coco peat, the step of sieving the dried coco peat is further included.