TW202244259A - Method of manufacturing solid recovered fuel - Google Patents

Abstract

A method of manufacturing solid recovered fuel (SRF) is adapted to mix and treat waste wood, sawdust, and waste plastic. The method includes a step of breaking the waste wood to a certain extent, a step of subjecting the waste wood to a sieving operation to collect the waste wood which does not exceed 30 cm and mixed metal scrap contained in the waste wood respectively, and a step of mixing the collected waste wood, sawdust, and waste plastic with a mixing device and stirring, thereby allowing these waste materials to rub against each other and squeeze during the stirring operation and thence coagulate to obtain solid recovered fuel (SRF) with various shapes. The solid recovered fuel can be used in the combustion for the energy conversion, thereby attaining the effect of resource reusing of wastes and being friendly to the environment.

Description

Solid Regenerative Fuel (SRF) Manufacturing Method

The present invention relates to a treatment method for converting waste into energy, in particular to a solid renewable fuel (SRF) manufacturing method.

Whether it is the replacement of old items and furniture, or the redecoration of old houses, there will often be discarded wooden furniture of different shapes and sizes, waste wood and plastic waste from old decoration dismantling, or wood Wood chips, etc. that are to be discarded in the process of processing and manufacturing production, are usually disposed of first after preliminary treatment of such waste, and then carried out by landfill or direct combustion incineration, in order to effectively reduce the huge amount of waste. However, in the current situation of limited access to land resources, if the above-mentioned waste objects are to be buried, not only must a wide range of burial sites be provided to completely bury them, but the burial will also cause soil pollution. And the land must wait for many years before it can be used again. Of course, if it is burned and incinerated, the gas generated after incineration will cause air pollution damage to the environment, and the ashes still need to be buried in a remote place, which will also cause double damage to the environment. Injuries need to be improved.

In view of this, with the gradual shortage of natural fuels, many companies are conducting research and development on converting waste into energy fuels, such as the Republic of China Publication No. 20123891 "Method for Making Derivative Fuels from Sludge", China The Republic of China Announcement No. I531425 Patent "Method for Making Biomass Fuel from Biological Sludge" and the Republic of China Announcement No. 431106 Patent "Preparation of Plant Fuel with High Combustion Efficiency" and other previous patents all describe the effective use of waste materials Converting it into a usable fuel; however, in each of the aforementioned cases, it is necessary to first grind the waste material to a size below 5mm, or even powder, and then add binders in the manufacturing process, and Through the cooperation of a compressed granule or sheet forming machine, the waste materials are solidified and shaped into granules and fragments of uniform size, so that the manufacturing cost will also be reduced due to the increase of additional additives and the compressed granules Or the addition of a sheet forming machine will lead to an increase in manufacturing costs; therefore, the inventor of this case hereby aims to improve the research and development of problems such as no need for additional additives, and no need to increase the use of granulation and tablet forming machines, so as to propose this application .

Therefore, the purpose of the present invention is to provide a solid renewable fuel (SRF) manufacturing method, which can process the waste to be discarded into a solid renewable fuel (SRF) in a resourceful manner for combustion for energy conversion, Effectively achieve the environmental protection effect of waste conversion and reuse.

Therefore, the solid renewable fuel (SRF) manufacturing method of the present invention includes a material preparation step, a crushing step, a screening step, and a mixing and molding step in sequence; wherein, the crushing step has a crushing device for processing the obtained waste wood Broken into pieces and flakes, and then in the screening step, the broken pieces and flakes of waste wood are screened in different sizes, and then according to the collected waste wood, sawdust and waste Plastics are subjected to subsequent mixing operations (that is, the mixing molding step), so that the waste wood, wood chips and plastics generate friction and extrusion with each other during the mixing process to form a plurality of solid renewable fuels (SRF) with different shapes. In this way, the waste to be discarded can be effectively processed into a solid renewable fuel in a resourceful manner, which can be converted into energy after burning, and effectively achieve the environmental protection effect of converting waste into valuable reuse.

Fig. 1 is a block diagram of the manufacturing process of a preferred embodiment of the present invention. Fig. 2 is a schematic diagram of mixing and making in this preferred embodiment.

The aforementioned and other technical contents, features and effects of the present invention will be clearly understood in the following detailed description of preferred embodiments with reference to the drawings.

Referring to Fig. 1, a preferred embodiment of the present invention, the solid renewable fuel (SRF) manufacturing method includes a material preparation step, a crushing step, a screening step and a mixing molding step, etc.; Collect waste wood with a calorific value of at least 3500~4500Kcal/kg, wood chips with a calorific value of at least 4000Kcal/kg (inclusive), and waste plastics with a calorific value of at least 6000Kcal/kg (inclusive), and The aforementioned waste wood has a moisture content of 10-40%, and the mixing ratio of the waste wood, sawdust and waste plastic can be 50-60% by weight: 15-20% by weight: 20-35% by weight.

Furthermore, in the crushing step, the above-mentioned waste wood can be put into a crushing equipment, and the crushing equipment can be processed according to the set crushing size requirements, so that the waste wood can be crushed from a large volume. , so as to reduce the volume of the waste wood and form a plurality of blocks and flakes of different sizes. Of course, the waste plastic with a larger shape can also be crushed to reduce the size of the waste plastic; as for the screening The step is equipped with a screening device to screen the waste wood with a size of 30 cm (inclusive) in the setting of the screening program. Distinguish between those below 30 centimeters and above, and waste hardware mixed in the waste wood, and the above-mentioned waste wood that is larger than 30 centimeters after screening can be processed through the crushing step to reduce the waste wood again. After volume, re-enter the screening step and screen again. At the same time, the screened waste hardware can be collected in a unified way and used in different fields.

Continuing from the foregoing, the mixing and molding step is equipped with a mixing and molding equipment to mix and mix the waste wood chips, waste plastics obtained in the material preparation step, and the waste wood that is screened to be less than 30 centimeters (inclusive). Of course, in order to make these materials To achieve sufficient mixing, a stirring unit can be installed in the mixing molding equipment, so that the materials can be fully stirred and stirred by the stirring unit, and in the mixing process, in view of the amount of water contained in the waste wood, and the The raw material of waste plastic is petroleum, so when the waste wood, sawdust and waste plastic form mutual friction and extrusion during the mixing process, and generate temperature during friction and mutual extrusion, the generation of temperature can make the waste wood The moisture in the waste wood is released, and the wood or fiber in the waste wood chips will be slightly plasticized into natural glue properties, and the waste plastic will further release oil through continuous friction and extrusion. This can use the water released by the waste itself, the nature of natural glue and oil as the cementing material, so that the waste wood, sawdust and waste plastic can be blended during the mixing process, and then condensed into a plurality of different shapes. Solid form of solid regenerative fuel (SRF), so that the solid regenerative fuel (SRF) manufacturing method can be completed.

Refer to Figure 1 and Figure 2. During the manufacturing process, waste wood such as decoration disassembly and discarded wooden furniture, wood chips to be discarded and discarded plastic items generated during wood processing and manufacturing processes (that is, material preparation) are collected. step), in view of the large volume of the waste wood, and the collected waste plastics also have objects with large shapes and sizes, at this time, the crushing equipment can be used to adjust the control of the numerical value to be crushed to the desired size range So that the waste wood and plastic are crushed separately, so that the waste wood and plastic are formed into a plurality of blocks and flakes of different sizes after being crushed, and then pass through the setting of the screening size conditions of the screening equipment , so that the size of the waste wood that is smaller than 30 cm (inclusive) is screened after crushing and the size of the waste wood is larger than 30 cm. process, to effectively reduce the size of the waste wood, so that the waste wood re-enters the screening process of the screening equipment after being crushed again, until the size of the waste wood meets the screening conditions, and is screened during the screening process The waste hardware produced can be collected and used in different fields to achieve complete reuse of waste, that is, to complete the screening step.

Continuing with the above, put the above-mentioned waste wood, waste wood chips and waste plastics that have met the screening conditions and have different shapes into the hybrid molding equipment one by one, and through the activation of the hybrid molding equipment, the waste The materials are stirred and moved by the stirring unit in the mixing molding equipment, so that the waste wood, wood chips and waste plastics form friction, extrusion and collision with each other during the mixing process, and under the action of friction and extrusion, The waste wood and waste plastic will release water and oil respectively in the mixed molding equipment, and the waste wood chips will be slightly plasticized into natural glue properties, so that the released water and oil can be made through a sufficient stirring process. The quality and slightly plasticized nature of natural glue can effectively form a cementing material with blending effect in these waste materials, so that the waste wood, sawdust and waste plastic can gradually achieve mutual cementation, making the waste wood, After a period of mixing process of wood chips and waste plastics, they will condense into solid recycled fuels (SRF) in solid shapes with different shapes. After the final mixing process, the cemented solid recycled fuels ( SRF) is taken out from the mixing and molding equipment, so that the solid renewable fuel (SRF) manufacturing method is completed, and of course it can be placed in the state where the solid renewable fuel (SRF) has been manufactured and then supplied for use; therefore, in this In the invention, if the waste wood, waste wood chips and waste plastics are respectively manufactured at 2000 tons/month: waste wood chips 500 tons/month: 1000 tons/month, it can produce about 3500 tons/month of solid renewable fuel (SRF ), and has a calorific value of at least 4500~6000Kcal/kg that can be quickly converted into energy, effectively achieving the environmental protection effect of waste resource reuse.

From the above description, the present invention really has the following advantages and effects:

1. The present invention collects a large amount of waste wood, wood chips and plastics, and first crushes them and then separates waste metals of different sizes. Therefore, the method is the simplest and the cost is low. At the same time, the separated waste metals are screened It can also be reused to reduce the pollution of waste to the environment.

2. In the mixed molding step of the present invention, without providing additional cementing materials, when it is stirred in the mixing process, the waste materials can be made to generate temperature during mutual friction, extrusion and collision, thereby enabling The moisture, natural glue properties, and oil properties hidden in each waste are effectively released to form a cementing material with a blending effect, so that the waste wood, wood chips, and plastics are condensed into multiple shapes. The Solid Renewable Fuel (SRF) in solid form can effectively reduce the amount of waste and achieve the environmental protection effect of reuse.

To sum up the above, the solid renewable fuel (SRF) manufacturing method of the present invention is implemented through the integrated steps of material preparation, crushing, screening, and mixing molding, thereby effectively improving the efficiency of waste recycling, and moreover, in the manufacturing process, Without the need to provide additional cementing materials, these wastes can be cemented with each other and form solid renewable fuels (SRF) in a plurality of solid shapes with different shapes, so it can effectively reduce operating costs and waste The environmental protection effect of material reduction and reuse.

But the above is only to illustrate the preferred embodiments of the present invention, and should not limit the scope of the present invention, that is, all the simple equivalent changes and modifications made according to the patent scope of the present invention and the content of the description of the invention , should still fall within the scope covered by the patent of the present invention.

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Claims (3)

A solid regenerative fuel (SRF) manufacturing method comprising: 1. Material preparation step, which first collects waste wood with a calorific value of at least 3500~4500Kcal/kg, and wood chips with a calorific value of at least 4000Kcal/kg (inclusive), and at the same time prepares waste wood with a calorific value of at least 6000Kcal/kg ( Including waste plastic above ), and the moisture content of the aforementioned waste wood is between 10% and 40%; A crushing step, which is equipped with a crushing equipment, which crushes the waste wood obtained in the previous step to make it into blocks and flakes; A screening step, screening the broken waste wood according to size, so as to collect the waste wood which is at least 30 cm (inclusive) or less and larger than 30 cm, and the waste hardware mixed in it; and A mixing and molding step, which is equipped with a mixing and molding equipment. The mixing and molding equipment is to mix and blend the waste wood collected in the previous step with a size of less than 30 cm (inclusive) with the wood chips and waste plastics, so that the waste During the mixing process, wood, sawdust and plastic generate friction and extrusion to condense into Solid Renewable Fuel (SRF) in various solid shapes. According to the manufacturing method of solid renewable fuel (SRF) described in claim 1, wherein, the pieces and flakes larger than 30 cm selected in the screening step can be processed through a crushing step to reduce the size of the waste wood. According to the solid renewable fuel (SRF) manufacturing method described in claim 1 or 2, wherein the mixing ratio of the waste wood, sawdust and waste plastics can be 50-60% by weight: 15-20% by weight: 20-35% % by weight.

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