KR100998800B1 - The method for manufacturing a mixing solid fuel from municipal waste and landfilled waste by calorimetry - Google Patents

Abstract

PURPOSE: A manufacturing method of mixing solid fuel including household waste and reclaimed waste is provided to reduce the economical loss by manufacturing the mixed solid fuel with separate processes. CONSTITUTION: A manufacturing method of mixing solid fuel including household waste and reclaimed waste comprises the following steps: crushing, selecting the household waste and separating combustible materials; crushing, selecting the reclaimed waste and separating the combustible materials; supplying the combustible materials to a third selecting device after controlling the water content less than 10%; mixing the combustible materials with calcium hydroxide and controlling with a programmable logic controller; molding the mixture into a waste solid fuel; cooling the solid fuel before storing; and filtering bad smell generated from the manufacturing processes and exhausting.

Description

The method for manufacturing a mixing solid fuel from municipal waste and landfilled waste by calorimetry

The present invention relates to a method for producing mixed solid fuel of domestic waste and landfill waste through calorimetry, and more specifically, to measure a low calorific value of solid fuel formed by mixing a municipal waste combustible material and a landfill waste combustible material with a calorimeter. When the low calorific value of the solid fuel passes the standard low calorific value of 4000 kcal / kg or more, it is stored in the solid fuel reservoir, and when the low calorific value of the solid fuel does not pass the standard low calorific value, it is returned to the combustible combustible mixed storage tank and reclaimed. The present invention relates to a method for producing high quality solid fuel that satisfies the standard calorific value of low calorific value together with the combustible material of high quality combustible material in the waste.

Products made of synthetic resins such as tires, vinyls and plastics, which are widely used in various industries and daily life, are recycled only after use, and most of them are classified as waste and landfilled or incinerated. The landfill cost is so large that it is not only expensive than ordinary waste but also uncorrupted by landfills.

In particular, the recycling rate of waste plastics is low compared to other wastes. Specifically, in 2005 alone, the recycling rate of waste paper is 55%, waste tires are 67%, glass bottles 58%, and scrap metal 43%, while plastics is only 15%. In addition, 4 to 5 million tons of waste plastics are generated every year, and the amount of waste plastics is increasing every year. Recently, the Ministry of Environment recognizes that waste plastics are a resource and improves the recycling rate of waste plastics. The company is actively supporting the quality and specification standards of used solid fuel products and using them as alternative fuels. In the long run, it is expected to increase the recycling rate of waste plastics by 50% and achieve economic effects of 500 billion won per year. .

With the rise of imported energy prices and the expansion of renewable energy, there is a growing interest in the utilization of waste energy. In Korea, the disposal status of most landfills in Korea is about 10 years ahead. As a result, there is a limit to recycling waste energy. In response, the government has banned treasury support for incineration since 2009, and proposed alternatives to the development of RDF through the pretreatment of household waste.

Here, the household waste pretreatment system refers to a series of processes in which a combustible material is processed into a solid fuel by separating and selecting recycled materials, combustible materials, biodegradable materials, etc. before incineration or landfill of household waste collected at home.

In view of this reality, RDF (Refuse Derived Fuel) made of solid fuel by treating combustible waste among household wastes, and RPF (Refuse Plastic Fuel) made of solid fuel by treating waste plastic Many techniques for manufacturing fuel products have been developed.

Currently, in the method of producing RDF from waste, if divided into two types according to the type and characteristics of the incoming waste, the method of producing solid fuel by sorting and processing combustible materials from landfill wastes buried in unsanitary landfill or illegal landfill; It is divided into the method of producing combustible materials as solid fuel by sorting and processing the combustible materials from the household waste collected in a pay-as-you-go bag at home, etc.In the production of each solid fuel, each pretreatment system is applied to produce solid fuel. .

The reason for this division is different depending on the landfill in case of landfill waste, but less than 20% of combustible materials, 65% or more of soil is accounted for, and the process of removing soil is the main process. There was something difficult to use.

In addition, the combustible material that is selectively separated from the landfill waste is difficult to produce a level of solid fuel that meets the quality and grade standards of the solid fuel product at the stage of processing into solid fuel when a small amount of soil or steam is contained. There was this.

In addition, in the case of landfill waste, organic matter is decomposed naturally while the waste is buried for a long time, and the classified combustible material is solid, such as vinyl / plastics, fibers / coatings, which have relatively high corrosion resistance in the state where the organic matter is removed. Although only combustible materials that can be utilized as fuels remain, there is an advantage of obtaining very good components, but there is a problem that it is difficult to apply to the domestic waste process due to the problem of earth and sand treatment.

In the case of the landfill wastes seen above, most of the landfill wastes have been difficult to recycle because of not only problems of sedimentation but also contaminated water, odors, and complaints from landfills for a long time. In the case of landfill waste, the process of recovering the heat energy source at the level of incineration through the combustion process and asking the landfill site was the main process.

However, as discussed above, the amount of recycled resources recovered from the landfill waste may be relatively small, but the utilization of landfill waste is being studied in that there are many materials as solid fuels having considerable calorific value in terms of thermal efficiency. .

On the other hand, in the case of domestic waste, the MBB (Mechanical-Biological Waste Treatment) process recovers the most valuable materials and reduces the environmental load through mechanical separation, screening and biological treatment before the final disposal of waste. A lot of energy is consumed in producing high quality solid fuel in its MBT process, and RDF production as a final object has little problem in obtaining solid fuel with high calorific value.

On the other hand, the moisture content is a very important factor that determines the quality of solid fuel.In the production of solid fuel with low moisture content, it is inevitable to consume a lot of energy in the MBT process. There was a difficulty in manufacturing.

Therefore, a small amount of energy is required to produce high-quality RDF as a valuable material for recycling while using the MBT process of household waste, while a pretreatment facility capable of producing solid fuel with high calorific value is required even with a small amount of energy. Although the need is great, there is no alternative yet.

In particular, in utilizing landfill waste as a resource, there was no solid fuel manufacturing method through an integrated process in connection with the MBT process as a pretreatment process of conventional household waste, and in particular, the moisture content can be adjusted at an appropriate stage in comparison with the overall process. There is no suggestion of how.

In addition, the amount of calories that determine the quality as solid fuel with moisture content is very important factor, but there is a problem of processing when the final product does not meet the calorie standard, and there is still an alternative to the subsequent disposal of solid fuel that is not calorie standard. This situation is absent.

The present invention has been made to solve the above problems, solves the problem of soil removal and odor problems of resources such as high-quality waste synthetic resins that can be recovered from landfill waste, and incineration of resources of such landfill waste In order to provide a means of active recycling of the passive energy recycling problem to be recovered as a heat energy source, the process of linking the landfill waste and household waste with the recycling resources is prepared by providing the characteristics of the process that can be linked to the existing waste MBT process. It provides a way to produce high quality solid fuels that are blended with each recycling resource.

More specifically, the high-quality combustible material that is selectively separated from the landfill waste is mixed with the combustible material that is selectively separated from the domestic waste to produce high quality solid fuel by low energy input. In addition, the present invention by applying the combustible material separation step of the landfill waste to the combustible material separation step of the domestic waste, to reduce the operational economic loss operating in a separate process, and to include the high quality combustible material in the landfill waste in the domestic waste It is possible to manufacture solid fuels with flammable materials so that it meets the quality standards of solid fuel products of the Act on Environment Conservation and Recycling Promotion (Ministry of Environment, 2009), and efficiently combustibles in landfill wastes. The present invention provides a method for solidifying fuel.

In addition, the composition of the step to control the moisture content, the proper arrangement in consideration of the step before and after the configuration, and the control of the moisture content control quality is linked with the manufacturing method of the high-quality solid fuel mixed through the rehabilitation resources derived from domestic waste and landfill waste To provide a method for producing a solid fuel.

In particular, an important factor other than the moisture content that determines the quality of solid fuel is to provide a method for producing high quality solid fuel through a process for satisfying the calorie standard conformity.

The present invention is a means for solving the above problems,

It is an integrated process that links the recycling of landfill waste in the MT (Mechanical- (Biological) Waste Treatment) process of household waste, and it is used for the process control of PLC (Programmable Logic Controller) which controls and monitors each process in general. A first sorting step of separating and crushing the imported domestic waste into the first crushing shredder and passing the first sorting device to separate the household waste combustible material; S-B1) a second sorting process of separating the landfill wastes carried separately from the household wastes into a second shredding shredder and separating the landfill waste combustible material after passing through a second sorting device; S-C1) Flammability mixed in the storage tank by controlling the moisture content measuring device of the sorting mixture storage tank which temporarily stores the combustible materials of municipal waste and landfill waste combustible separated by the first and second sorting processes If the water content of the mixture is 10% or less, it is supplied to the following step S-C3), and if the water content is more than 10%, the sorting mixture controlled by the PLC to be supplied to the third sorting device of S-C2) Storage and primary moisture content control process; S-C2) Drying process and secondary moisture content control to control the moisture content to 10% or less through the drying step of the combustible mixture material with a moisture content of more than 10% inflow through the screening mixture storage and the primary moisture content control process fair; S-C3) collecting the hot air generated in the drying process through a heat exchanger to use as fuel; S-C4) Combustible mixtures having a moisture content of 10% or less through the storage of the screening mixture and the primary moisture content control process, as combustible materials without a drier, or flammable mixtures having a moisture content of 10% or less after the drying process and the second moisture content control process. Wind screening and tertiary water content control process to remove fine soils with density screening through wind turbines; S-C5) Combustibles mixed storage tank for combustibles that have undergone the third sorting process to sequentially select the combustible materials that have passed the wind screening and tertiary water content control process through a metal sorter, a nonferrous metal sorter, a near-infrared optical sorter, and a combustible grinder. Combustibles mixing process to store in; S-C6) a mixing control process including a PLC control process controlled by a PLC in forming a mixture by mixing with the domestic waste combustible material, the landfill waste combustible material, and slaked lime stored in the pulverized combustible mixed storage tank; S-C7) transferring to a solid fuel molding machine to form waste solid fuel by the solid fuel molding machine; S-C8) The low calorific value of the solid fuel is measured by a calorimeter, and controlled by a PLC and stored in a solid fuel reservoir when the low calorific value of the solid fuel passes a standard low calorific value of 4000 kcal / kg or more, If the low calorific value does not pass the reference low calorific value, the amount of landfill waste is increased in conjunction with the PLC in the S-C6) step while returning to the pulverized combustible mixed storage tank of step S-C5), or the amount of household waste Calorimetric process having a control process to reduce the amount of heat; S-C9) cooling the waste solid fuel molded by the molding machine to store in the solid fuel reservoir; S-C10) provides a method for producing mixed solid fuel of domestic waste and landfill waste through calorimetry, including the step of filtering the malodorous air generated in the solid fuel forming process and exhausting the filtered air through an air pollution prevention facility. .

On the other hand, the present invention provides a method for producing a mixed solid fuel of household waste and landfill waste through calorimetry, characterized in that the water content is determined by the following number 1.

 [1]

In addition, the present invention provides a method for producing a mixed solid fuel of domestic waste and landfill waste through calorimetry, characterized in that the low calorific value is determined by the following Equation 2.

[Number 2]

Here, the high calorific value is the total calorific value generated when the material to be burned of the waste is completely burned to generate carbon dioxide and water,

The hydrogen composition ratio is a composition ratio of hydrogen in the waste by elemental analysis,

The moisture content refers to the moisture content in the waste.

Here, the low calorific value may be calculated by subtracting the latent heat of condensation of steam from the dry high calorific value and subtracting the amount of heat required to evaporate water in the waste.

On the other hand, the first sorting device and the second sorting device is a screen sorter having one or two to four consecutive configurations, the screen sorter is preferably a trommel screen, a disk screen, the step S-C1) The water content control process at can be controlled automatically by the PLC.

In addition, the present invention, S-D1) caloric auxiliary material input step, before the combustible crusher of the third sorting device, a step of injecting a caloric auxiliary material to increase the calorific value through the caloric auxiliary material input device; It is possible to provide a mixed solid fuel production method of household waste and landfill waste.

In addition, the ratio of the mixture in the S-C5) mixing control process may be controlled by mixing in a weight ratio of the household waste combustible material: the landfill waste combustible material: the slaked lime = 1: 0.2 to 5: 0.02 to 0.5.

According to the mixed solid fuel production method of the domestic waste and landfill waste of the present invention, by combustible material selected and separated from the landfill waste mixed with combustible material selected and separated from the domestic waste, the high quality combustible material in the landfill waste is included in the domestic waste The advantages of producing solid fuels of high quality by making solid fuels with combustible materials present are remarkable. This advantage is not only economical in terms of the final product, such as calorific value, low water content and low ash content of the produced solid fuel, but also low energy input in terms of the ratio of energy administered to the process as a process for producing it. This has the advantage of being possible. In addition, by applying the combustible material separation step of the landfill waste to the combustible material separation step of the domestic waste, it is excellent to reduce the economic loss when operating in a separate process.

Therefore, it is possible to actively recycle landfill waste beyond the problem of passive utilization in which landfill waste is conventionally treated by incineration, thereby significantly increasing the yield of recycling and producing high-efficiency solid fuel in connection with domestic waste. It can be expected to reduce mass production, landfills, and production costs.

In addition, since solid fuel is produced using landfill waste and low water content, it is possible to produce fluff-type solid fuel that meets environmental standards, thereby diversifying solid fuel that can be used as a resource. Can have

On the other hand, in the production of solid fuel by controlling the moisture content, which is an important factor determining the quality of the solid fuel is minimized the energy input to produce a solid fuel can have a great effect.

In particular, the low calorific value of the solid fuel formed by mixing the municipal waste combustible material with the landfill combustible material is measured by a calorimeter and controlled by a PLC to pass the standard low calorific value of the solid fuel of 4000 kcal / kg or more. In the case of storing in a solid fuel storage tank, if the low calorific value of the solid fuel does not pass the standard low calorific value is returned to the combustible combustible mixed storage tank is a significant advantage to produce a high quality solid fuel. In addition, by applying the combustible material separation step of the landfill waste to the combustible material separation step of the domestic waste, it is excellent to reduce the economic loss when operating in a separate process.

1 is a process diagram of producing a mixed solid fuel of household waste and landfill waste through calorimetry according to an embodiment of the present invention.
FIG. 2 is a flow chart showing a mixed solid fuel of domestic waste and landfill waste through calorimetry according to another embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings it will be described in detail with reference to the embodiment so that it can be easily reproduced repeatedly by those skilled in the art to which the present invention pertains.

The present invention, S-A1) a first sorting step of separating the domestic waste combustible material after crushing and crushing the imported domestic waste into the first crushing crusher and passing through the first sorting device;

S-B1) a second sorting process of separating the landfill wastes carried separately from the household wastes into a second shredding shredder and separating the landfill waste combustible material after passing through a second sorting device;

S-C1) A sorting mixture storage tank for temporarily storing the combustible waste materials and the landfill waste combustible materials separated through the first and second sorting processes, wherein the sorting mixture storage tank is linked with a moisture content measuring device, and If the moisture content of the combustible mixture mixed in the storage tank is 10% or less through the measuring device, it is supplied to the following step S-C3), and if the moisture content is more than 10%, it is supplied to the third sorting device of the following S-C2). A sorted mixture storage and primary moisture content control process to control the process by a PLC so that;

S-C2) Drying process and secondary moisture content control to control the moisture content to 10% or less through the drying step of the combustible mixture material with a moisture content of more than 10% inflow through the screening mixture storage and the primary moisture content control process fair;

S-C3) collecting the hot air generated in the drying process through a heat exchanger to use as fuel;

S-C4) Combustible mixtures having a moisture content of 10% or less through the storage of the screening mixture and the primary moisture content control process, as combustible materials without a drier, or flammable mixtures having a moisture content of 10% or less after the drying process and the second moisture content control process. Wind screening and tertiary water content control process to remove fine soils with density screening through wind turbines;

S-C5) Combustibles mixed storage tank for combustibles that have undergone the third sorting process to sequentially select the combustible materials that have passed the wind screening and tertiary water content control process through a metal sorter, a nonferrous metal sorter, a near-infrared optical sorter, and a combustible grinder. Combustibles mixing process to store in;

S-C6) a mixing control process including a PLC control process controlled by a PLC in forming a mixture by mixing with the domestic waste combustible material, the landfill waste combustible material, and slaked lime stored in the pulverized combustible mixed storage tank;

S-C7) transferring to a solid fuel molding machine to form waste solid fuel by the solid fuel molding machine;

S-C8) The low calorific value of the solid fuel is measured by a calorimeter and controlled by a PLC and stored in a solid fuel reservoir when the low calorific value of the solid fuel passes a standard low calorific value of 4000 kcal / kg or more, and the solid fuel If the low calorific value of does not pass the standard low calorific value, the amount of landfill waste is increased in connection with the PLC in the step S-C6) while returning to the pulverized combustible mixed storage tank of step S-C5), or A calorimetry step having a control step of reducing the amount;

S-C9) cooling the waste solid fuel molded by the molding machine to store in the solid fuel reservoir;

S-C10) provides a method for producing mixed solid fuel of domestic waste and landfill waste through calorimetry, including the step of filtering the malodorous air generated in the solid fuel forming process and exhausting the filtered air through an air pollution prevention facility. .

In this case, the pulverized combustible mixed storage tank as a feature of the present invention is a storage tank in which the recycled raw materials are sorted and separated after the MBT process and the landfill waste sorting and separation process of household waste, respectively, collected in the combustible combustible mixed storage tank. It is one of the features of the present invention in that the mixing ratio is controlled by PLC to optimize the properties of the solid fuel to be produced by measuring the calorific rate of each waste-derived reclaimed raw material and landfilled waste-derived recycled raw material.

That is, since the amount of rehabilitation raw materials derived from landfill wastes is small, but superior in terms of calories, it is better than the regeneration raw materials derived from domestic waste, the calorie content of the mixture checked in the combustible combustible mixed storage tank is "Act on Saving Resources and Promoting Recycling" If the quality standards of the solid fuel products of the Ministry of Environment 2009) are insufficient, the regeneration fuel derived from landfill waste is introduced through the PLC. This control process not only saves energy in each process that is used to produce purely solid waste-derived fuel, but also promotes the conservation and recycling of resources in non-molded states other than pallets. It is also possible to produce fluff-type solid fuel that meets the criteria of 2009).

In addition, the problem as a means to solve the quantitative problem that had to be treated by the incineration problem, the problem of odor, simple incineration during the reclamation of the conventional landfill waste and the present invention is through the combustible combustible mixed storage tank described above In addition to the integrated process of reclaimed fuel derived from landfill and domestic waste, reclaimed fuel derived from landfill and household waste is temporarily stored in the sorted mixture storage tank, and the process according to the water content in the sorted mixture storage tank linked to the water content measuring device, in the dryer After controlling the moisture content and the drying step through the dryer, the wind selector, which is a sorting device, is directly connected to obtain the density fraction using the wind and additionally obtain the function of lowering the moisture content, thereby controlling and minimizing the moisture content. Very efficient and light in terms of energy consumption in production It is characteristic that the manufacture of household waste and landfill waste mixed solid fuel.

The process control associated with the sorted mixture storage tank, the optimized moisture content control through the drying step, and the process of lowering the water content through the wind sorter are very efficient in minimizing the moisture content of each recycled material that can influence the quality of the solid fuel. Can be minimized. In particular, after the drying step, the soil and the like that could not be removed due to moisture in the reclaimed fuel derived from the landfill waste through the wind sorter can increase the removal rate of the soil by the wind sorter after the drying step, and at the same time obtain a low content recycled fuel. In this regard, the energy savings can be realized in terms of energy savings, since this process is carried out along with the drying process of the regeneration fuel derived from domestic waste and the sorting through the wind sorter.

In more detail, the present invention is to crush and shred the domestic waste and landfill waste, respectively, and after the density screening through the screen sorter, and temporarily stored in the sorting mixture storage tank before passing through the dryer, the waste derived from the domestic waste and landfill waste rehabilitation fuel The process includes the PLC process, which allows fluid control of the process in that the water content varies according to the season or the condition of the waste through the water content measuring device in the sorting mixture storage tank after the first step of integration. After drying and drying to less than 10% of the moisture content through the wind separator to perform the integrated MBT process.

At this time, the criteria for controlling the moisture content is preferably determined by the following [Number 1].

[1]

The moisture content measuring step is to cut the household waste combustible material or the landfill waste combustible material sample into a predetermined size, put it in a crucible of known weight, measure the total weight of the sample and the crucible, and measure the measured sample in 105 ± 5 ° C. Put it in a small drying apparatus maintained at about 4 hours until the weight does not change, and after a period of time to put into a sulfuric acid desiccator to cool and measure the weight and calculate the moisture content by the moisture content of the formula (1) Is performed.

The outline of the integrated MBT process is to recycle the domestic waste-derived recycled fuel and landfill waste-derived recycled fuel through a non-ferrous metal sorter and a near-infrared sorter in a combustibles grinder and stored in a combustible combustibles mixed storage tank. In this case, as described above, in order to manufacture the solid fuel in accordance with the standard suitability of the mixture, the combustible combustible mixed storage tank is a PLC (Programmable Logic Controller) to control the inflow of recycled fuel derived from municipal waste or recycled fuel derived from landfill waste. Each process is controlled through the process control such as to control the ratio of the mixture with the slaked lime from the slaked lime input device to meet the quality standards of the solid fuel product.

That is, through the PLC (Programmable Logic Controller) through the feedback control of the input amount of household waste combustibles and landfill waste combustibles to produce high-quality solid fuel with the slaked lime injected from the slaked lime input device. At this time, the confirmation for the control of the mixing amount can be adjusted by taking a certain amount of the mixture of the combustible combustible mixed storage tank during the process, as well as using the apparatus for checking the mixing ratio according to the properties of the mixture Means can be used.

When the domestic waste combustible material and the landfill waste combustible material stored in the pulverized combustible mixed storage tank are mixed with hydrated lime, the domestic waste combustible material: the landfill waste combustible material: the hydrated lime is 1: 0.2-5: 0.005-0.5 It is preferable to mix by weight ratio. Wherein the combustible waste material: the landfill waste combustible material: the mixing ratio of the slaked lime is 1: 0.2 ~ 5: 0.005 ~ 0.5 when the weight ratio of the mixed solid fuel can exhibit excellent properties such as calories, density, etc. I never do that.

In addition, a combustibles grinder may be further added between the first sorting device and the combustible combustibles mixing reservoir. Here, the added combustible crusher can be used to grind the separated landfill waste combustible material.

Preferably, the first screening device and the second screening device are screened screens, and the screened screens are preferably any one or a continuous configuration of a trommel screen or a disk screen.

At this time, the rehabilitation raw material that has passed through the first sorting device and the second sorting device is temporarily stored in the sorting mixed storage tank before the dryer. In the sorting mixture storage tank, including a moisture content measuring device, if the water content is 10% or less through the standard according to [Number 1], the process of passing through the dryer is omitted, and if it exceeds 10% to pass through the dryer Prevent unnecessary energy consumption. In addition, when the moisture content exceeds 10% through the dryer through the optimized drying process in the dryer can also reduce unnecessary energy consumption as well.

The integrated process of rehabilitation raw materials of municipal and landfill wastes, starting from salping and sorting mix storage tanks, is more efficient than producing or utilizing solid fuels through two separate lines in terms of energy efficiency. It is a key process for producing solid fuel of good quality.

In addition, in the integrated stage, the reason for passing the wind separator immediately after the drying process, in addition to the process for controlling the moisture content, is to obtain the effect of density selection through the wind separator, to minimize the moisture content, and to reduce the landfill waste. If the microsoil remains due to wetting, the quality of the solid fuel to be produced may be deteriorated. Thus, the soil separator can efficiently remove the soil that has not been removed due to the fine moisture of the reclaimed raw materials from landfill waste through the wind separator. In order to minimize the problem of the conventional landfill solid fuelization that can be minimized, there is a feature in that a very large efficiency can be obtained in terms of energy saving.

On the other hand, the sorting mixture storage tank may serve as a buffer before the process of the drying step through the dryer in the control of the amount of the mixture controlled through the PCL.

  Previously, the trommel screen and the disk screen are screened by particle size difference, the windscreen separator and the nonferrous metal sorter are screened by density difference, and the near-infrared optical sorter is characterized by the characteristics of the material to be screened by the reflected near-infrared wavelength. Scanning to classify the object and when the object is located in the air nozzle by blowing the compressed air instantaneous separation.

Separation of biodegradable material from trowel or crushed household waste or landfill waste through trommel screen or disc screen through the first and second sorting devices is carried out by a wind separator or non-ferrous metal sorter as a step after drying through a dryer. And removing polyvinyl chloride with a near infrared sorter.

Here, the incombustibles include glass, porcelain, metal recycled products.

On the other hand, as a feature of the present invention, the low calorific value of the solid fuel formed by mixing the domestic waste combustible material and the landfill waste combustible material is measured by a calorimeter, and controlled by a PLC so that the low calorific value of the solid fuel is 4000 kcal / kg or more When the standard low calorific value is passed, it is stored in a solid fuel reservoir, and when the low calorific value of the solid fuel does not pass the standard low calorific value, the process is returned to the mixed combustible combustible mixed storage tank and the flow of reclaimed waste derived from landfill waste is increased. To produce high quality solid fuel.

This calorimeter was used to check the calorie value before or after the final molding before the final molding to produce an optimized high quality solid fuel, and if the conventional solid fuel after the final molding did not meet the quality standards, the treatment was difficult Through the present invention, the process of selecting heat after measuring calories and reproducing solid fuel that meets the criteria may provide more efficient resource management by feeding back as part of a process of mixing landfill waste and domestic waste as a feature of the present invention. .

On the other hand, the low calorific value is preferably determined by the following formula.

[Number 2]

Here, the high calorific value is the total calorific value generated when the material to be burned of the waste is completely burned to generate carbon dioxide and water,

The hydrogen composition ratio is a composition ratio of hydrogen in the waste by elemental analysis,

The moisture content refers to the moisture content in the waste.

Here, the low calorific value was calculated by subtracting the latent heat of condensation of water vapor from the dry high calorific value and subtracting the amount of heat required to evaporate water in the waste.

With regard to combustion, the product is divided into high calorific value and low calorific value according to whether water is based on water or steam. High calorific value refers to the total calorific value generated when the material to be burned is completely burned to produce carbon dioxide and water.In high calorific value, the product is regarded as water instead of steam, and includes the latent heat required to convert steam into water. do. Low calorific value does not consider latent heat because, unlike high calorific value, the final product is regarded as water vapor rather than water. Therefore, subtracting the latent heat of steam from the higher calorific value can determine the lower calorific value. When it is usually burned and discharged, it is discharged in the state of steam, so the low calorific value is used for the calorific value associated with combustion.

The calorific value determination method is a method of directly calculating calorific value of waste using a Bomb calorimeter, and is a method of measuring calorific value generated by completely burning combustibles in waste in a calorimeter. In general, solid and liquid fuels are measured with a Bomb calorimeter, and gaseous fuels are measured with a Junggels calorimeter. In addition, the calorific value analysis is a high calorific value of the calorie (Bomb) calorimeter by drying the dried sample to form a pellet. In addition, the high calorific value is measured by wrapping the tissue paper for the calorimeter for samples that are difficult to make into pellets or that the pellets may be broken due to the injection of oxygen during the test.

The use of the calorimetry device may be analyzed by taking a mixture before molding at a time interval in the process, or through a continuous process through the measuring device, but also through a feedback process through calorimetry through PLC control. .

Hereinafter, with reference to the accompanying drawings, it will be described in more detail.

1 is a process diagram of manufacturing a mixed solid fuel of household waste and landfill waste according to an embodiment of the present invention.

end. First selection of domestic waste

As shown in FIG. 1, the imported domestic waste is crushed and crushed through the first crushing crusher 101. Here, the household waste brought in by the waste collection vehicle is measured at the weighing table, and then flows into the loading site and is temporarily stored in the household waste storage tank. The household waste storage tank can be homogenized by mixing by a waste crane with a buffer function. Thereafter, household waste is introduced into the first shredding shredder 101 by a waste crane. The household waste is brought into the total amount of waste in the pay-as-you-go bag, and the waste-based bag varies in 3, 5, 10, 20, 30, 50, 75, 100 l. The first shredding shredder 101 is a pre-treatment concept for sorting to effectively shred small plastic bags in the pay-as-you-go bag, and performs an additional function of shredding large wastes of 300 mm or more.

Then, the biodegradable material is separated through the first sorting device 110 including the first trommel screen 111 and the first disk screen 112, and the particle size is selected and stored in the sorted mixture storage tank 113. Let's do it. The sorting mixture storage tank promotes efficient progress in connection with the process control for controlling the moisture content, and also serves as a buffer as the starting step of the MBT process through one line by storing the domestic waste and landfill waste together.

More specifically, the separation of the biodegradable material from the crushed living waste is selected by the particle size in consideration of the particle size of the biodegradable material is less than 40mm and the first trommel screen 111 and the first disk Screen 112 is used. The first trommel screen 111 is the most widely used type for particle size selection and can be selected according to the desired size according to the size and shape of the sieve.

Biodegradable materials, combustible materials, and incombustible materials are mixed in the sorting material having a particle size of 80 mm or less, and the organic matter of 40 mm or less is stored for secondary treatment, and the combustible material and incombustible material having 40 mm or more are stored for secondary treatment. The material is stored in the sorted mixture storage tank 113.

And, in the case of landfill waste, landfill waste transported after the excavation of a predetermined soil after excavation in a landfill site before being introduced into the MBT process of household waste is separately pretreated by the second screening device 120.

I. Second sorting of landfill waste

The landfill waste carried separately from the household waste is crushed and crushed by the second crushing shredder 102 and passed through the second sorting device 120 to separate the landfill waste combustible material.

Landfill waste varies depending on the landfill, but the main process is to remove more soil than combustible materials, with less than 20% flammable material and 65% more soil. The primary removal of the soil is by particle size selection using the size difference between the soil and the combustible material, and the secondary removal is a mechanical screening method using only a rake to remove the combustible material. The selected soil is recycled into cover and fill material and the combustible material is stored in the sorted mixture storage tank 113. The role of the screening mix reservoir is as described above.

At this time, the landfill waste is introduced into the hopper through a loader or a crane as an input device for inserting the landfill waste into the crushing crusher is transported in a state in which the large waste is removed through a screen installed in the inlet. The waste temporarily stored in the hopper is quantitatively transferred to the second disk screen 122 by the conveyor.

The second disk screen 122 is the same as the form for the pre-treatment of household waste, which is less clogged by the rotation of the disk, and enables the first sorting of the soil at the same time as the waste is transported, thereby increasing the efficiency of the entire system. The spacing between the disks is chosen to be 35 to 40 mm, taking into account the particle size and screening efficiency.

The hole size of the second trommel screen 121 is also selected to be 35 to 40 mm to minimize the loss of flammable material, and thus a function for removing clogging of the screen is added. One is a blade device to prevent clogging inside the screen, and the other is a brush device to prevent clogging outside the screen, and screen hole clogging does not occur even when a high content of landfill waste is brought in. Soil removal efficiency of the second trommel screen 121 is 95 ~ 98%.

The landfill waste, which has passed through the second sorting device, is stored together in the sorted mixed storage tank 113 in which the municipal waste-derived rehabilitation material is temporarily stored after passing through the first sorting device of the household waste in the MBT process of the household waste or immediately passed through the dryer. can do.

All. Through the third sorting and variable drying system MBT  Process integration

After the two primary and second screening resources are stored in the sorted mixture storage tank, the water content of the seasoned change, the water content of the waste by the state of the waste through the water content measuring device in the sorted mixture storage tank as a process of reducing energy consumption If the moisture content is more than 10%, the integrated MBT process is entered while passing through a third sorting device including a dryer 115, a wind separator 116, and a near infrared optical sorter 118. On the other hand, if the moisture content exceeds 10% through the moisture content measuring device in the sorting mixture storage tank, it does not pass through the dryer, but passes through a third sorting device including a wind separator 116 and a near infrared optical sorter 118. Enter the MBT process.

The dryer 115 is an apparatus for drying combustibles crushed to 50 mm or less, and further includes a combustion furnace (not shown) for supplying hot air at 350 ° C. and a combustible storage tank (not shown) for storing dried combustibles. The crushed combustibles are quantitatively supplied by the dryer inlet conveyor, and are discharged by drying the moisture content of the combustibles below 10% through the speed control of the dryer and the temperature control of the dryer inlet and outlet. The drying method is a rotary drum type and direct drying method in which hot air gas and crushed waste are directly contacted in the dryer to dry the waste.

The dryer 115 adjusts the residence time by applying an inverter that can adjust the drum driving speed according to the moisture content of the waste to be dried (average waste residence time: 30 minutes). In addition, the low hot air temperature (300 ~ 350 ℃) is less fire risk, there is no melting, adhesion, seizure of the waste by heat, can be operated continuously up to 24 hours per day. The dryer may control the moisture content by drying the waste by controlling the amount of waste, the amount of hot air, the drum speed when the moisture content exceeds 10%.

The combustion furnace (not shown) is a direct heating type, dry exhaust gas inlet / outlet temperature: 132 ° C./350° C., a direct heating type with excellent thermal efficiency, enhanced heat resistance by castable construction, and temperature control by LNG combustion.

The dry combustible storage tank (not shown) has the same form as the combustible combustible mixed storage tank 150.

At this time, the heat exchanger 250 is installed in the dryer 115 to collect the hot air generated in the drying process through the heat exchanger and use it as fuel.

Recycling waste derived from domestic waste from landfill waste and reclaimed waste derived from landfill waste or sorted mixed storage tank having the moisture content of 10% or less from the wastewater and reclaimed waste derived from landfill waste are transferred to wind sorter 116.

The sorted material having a particle size of 80 to 200 mm is transferred to the wind selector 116 as waste in which biodegradable material is removed.

The sorting material having a particle size of 200 mm or more is recycled to the first crushing crusher 101 and crushed to 200 mm or less for efficient sorting of the rear stage sorting device. However, it can also be recycled to a 2nd crushing bag as needed.

The first disk screen 112 is capable of sorting light materials by agitating the disk, which makes it easy to sort biodegradable materials and reduces clogging due to the rotational force of the disk. However, when the thickness of the incoming waste layer becomes thick, the sorting efficiency is lowered. Thereby, the screening efficiency of the biodegradable material is increased by reducing and bringing in the amount of waste carried in after the first sorting with the first trommel screen 111.

The primary purpose of the wind separator 116 is to separate combustible materials such as paper, fiber, rubber / leather, vinyl / plastic, etc. by using the difference in density, and the second purpose is to improve the natural drying of the waste. . In particular, it is a feature of the present invention that the fine earth and sand remaining in the landfill waste-derived rehabilitation raw materials can be removed together with the wind and the process of lowering the water content together with the screening process.

The heavy weights of the wind selector 116 are discharged under the wind selector 116 and flow into the non-ferrous metal sorter 117. The heavy material is composed of wood, food and non-combustible materials, and the non-ferrous metal sorter 117 separates ferrous and non-ferrous metals.

The near-infrared optical sorter 118 classifies objects by scanning properties of the material to be sorted by the reflected near-infrared wavelengths and separates them by spraying compressed air when the objects are located in the air nozzle. Depending on the system setting, plastics can be classified by material (PE, PS, PET, PVC, etc.), but the sorting facility for waste fuelization of the present invention removes only PVC, which is a dioxin-inducing substance, during combustion.

The final selected combustible material is pulverized in accordance with the quality standards of the solid fuel in the combustible crusher 140. The grinding method is mainly represented by two-axis shearing type and grinder type, and adopts a grinder type grinder which has few mechanical devices and is easy to grind plastics and vinyls. The particle size of the pulverized product is also 50 mm or less to meet the size of 50 mm or less of the final solid fuel.

The pulverized combustible mixture storage tank 150 is installed as a buffer function for the stable supply of waste. If the waste outlet is of the hopper type, a bridge can be formed at the end of the storage tank, and a plate-type discharge structure is adopted.

The combustibles pulverized by the combustible waste crusher 140 are stored in the combustible combustible mixed storage tank 150.

In the process of inputting the final sorted combustible material into the combustible pulverizer, in order to produce a solid fuel having a higher calorific value according to the requirements of the customer, a process of adding a calorific auxiliary material 201 as shown in FIG. 2 may be added. have. The caloric aid input process may be selectively performed as necessary. At this time, the type of caloric auxiliary material is a high-calorie flammable powder in a facility such as a recycling sorting complex, and vinyls may be mainly used.

la. Combustible combustibles  Mixing control

After the domestic waste and the landfill waste pass through each of the first and second sorting devices at a time difference, the dryer and the wind separator are machined, and then the metal sorter 117-a, the nonferrous metal sorter 117-b, and the After passing through a near-infrared sorter 118, the combustible crusher 140 is pulverized and stored in the pulverized combustible mixed storage tank 150, PLC (Programmable Logic Controller) for optimizing the conditions of the mixing amount of the mixture in the combustible combustible mixed storage tank Controlling through 500 is a feature of the present invention.

At this time, the control through the PLC (Programmable Logic Controller) (500) has a high calorie content of the combustibles separated from the landfill waste, the amount inputted from the landfill waste into the combustible combustible mixed storage tank to meet the standard compliance of the solid fuel to be produced finally In order to control, when the amount of heat of the mixture in the combustible combustible mixed storage tank 150 does not meet the reference value, the landfill provided to the selective mixed storage tank 113 from the second screen 122 through the PLC (Programmable Logic Controller) (500) The control to increase the amount of waste-derived resources is further performed, and it can also be said to be a control step to obtain the best quality solid fuel by adjusting the input amount of the slaked lime input device 155 together.

 That is, the feed rate of the household waste combustibles and the landfill waste combustibles is feedback-controlled through the PLC (Programmable Logic Controller) 500 and mixed with the slaked lime input from the slaked lime injecting device 155 at a predetermined ratio.

The mixture after the mixing process is a step prior to the forming process, and forms a kind of solid fuel in the form of fluff. Since the water content is adjusted by the simultaneous application using wind screening, it can be directly applied to the part that can be used as fuel in the fluff state.

Meanwhile, the household waste combustible material and the landfill waste combustible material stored in the pulverized combustible mixed storage tank 150 are controlled by the PLC 500, mixed with hydrated lime, and then transferred to the solid fuel molding machine 160 to the solid fuel molding machine. By 160, it is formed into waste solid fuel in the form of pallets or flakes.

On the other hand, after obtaining a flop (fluff), which is a kind of solid fuel before passing through the solid fuel molding machine, it is possible to omit the following molding step and storage step, as described above, and according to the large efficiency of energy saving You can get it.

Here, when the domestic waste combustible material and the landfill waste combustible material stored in the crushed combustible mixed storage tank are mixed with hydrated lime, the domestic waste combustible material: the landfill waste combustible material: the hydrated lime is 1: 0.2-5: 0.005-5 Mixing at a weight ratio of 0.5 is preferred.

The solid fuel molding machine 160 is a facility for finally molding the waste combustible material and the landfill combustible material mixed after the crushing and sorting process into waste solid fuel in the form of pallets or flakes. The solid fuel molding machine 160 uses a single screw extruder, and in order to prevent a process accident of the extruder, it is necessary to supply a fixed amount of the mixture and a predetermined press injection into the extruder. In addition, the dry waste is cut, compressed, and molded into the processed holes of the rotating dies by rotating rings and rollers. There is no external heating, which has the advantage of low power consumption. In addition, there is a water evaporation effect by the heat of compression, microbial sterilization effect.

Thereafter, after the process of the molding machine is subjected to the process of measuring the calorific value of the molded solid fuel.

hemp. Calorie measurement and inflow control of landfill or household waste

After the above molding process, the calorific value of the solid fuel produced by the calorimeter associated with the solid fuel molding machine is checked. The check method is as described above, and when the calorific value of the solid fuel is 4000 kcal / kg or more, it is immediately stored in the solid fuel.

However, when the calorific value is less than 4000 kcal / kg, it is fed back to the combustible crusher 130 by PLC control, and at the same time from the first disk screen 112 to the sorted mixture storage tank 113 to increase the inflow of landfill waste. Reducing the amount of household waste introduced, and the control to increase the amount of household waste introduced into the sorting mixture storage tank 113 in the second disk screen 122, and the control by the PLC.

In the case of landfill waste-derived rehabilitation raw materials, the amount is relatively small, but the calorific value is relatively higher than that of household waste.

In the case where the finally produced solid fuel is 4000 kcal / kg or more, it is stored in the solid fuel, and then the odorous air generated in the solid fuel forming process is filtered and the filtered air is exhausted through the air pollution prevention facility 180.

The waste solid fuel immediately after solidifying in the molding machine is cooled to room temperature in order to prevent the waste solid fuels from tangling with each other because the temperature is about 70 ~ 100 ℃.

Here, since the steam generated in the molding process causes a significant odor, the exhaust of the extruder is collected by the air pollution prevention facility 180 and discharged to the atmosphere after the cleaning treatment.

Hereinafter, the present invention will be described in detail by specific examples.

However, the following examples are merely to illustrate the invention, but the content of the present invention is not limited by the following examples.

After the living waste is crushed and crushed in the first shredded shredder 101 in the configuration as illustrated in FIG. 1, the household waste combustible material was separated through the first sorting device 110. That is, crushed household waste is passed through the first trommel screen 111 and the first disk screen 112, the particle size is selected, the biodegradable material is separated, the separated material is introduced into the sorting mixture storage tank 113. It was.

On the other hand, after the landfill waste is crushed and crushed in the second bongbong crusher 102, the waste material combusted through the second sorting device 120 is separated, and then put into the sorting mixture storage tank 113.

When the moisture content exceeds 10% by measuring the moisture content through the moisture content measuring device in the sorting mixture storage tank, the domestic waste combustible material and the landfill waste combustible material injected into the dryer 115 are dried through a dryer and are densified through a wind separator. Screening was done. On the other hand, when the water content was less than 10%, it was immediately put into the wind selector.

In the present embodiment, the moisture content measuring device is installed in the sorting mixture storage tank and processed by automatic control through a PLC. Such a moisture content measuring device is subjected to a process separated in time after the sorting mixture storage tank as shown in FIG. More precise moisture content can be measured before proceeding to the next step.

As described above, in the process of wind turbine selection and wind screening, there was a great effect in removing fine soils in landfill waste and lowering the water content after the dryer in addition to the density screening by wind screening. In the following cases, because the wind pass through the wind separator was effective in terms of energy efficiency.

Wind dryer, non-ferrous metal separator and combustible pulverizer including the dryer as a third sorting device has a feature as an integrated process, the subsequent step is also a feature of the present invention that the solid fuel is produced in one line. The integrated process of this one line saved energy for solid fuel production.

As the third sorting device described above, the combustible material passing through the dryer passes through the wind separator 116, the metal sorter 117-a, and the nonferrous metal sorter 117-b, and the non-flammables are sorted by density, and the near-infrared optical sorter 118. ) PVC was separated.

Then, the household waste combustibles and the landfill waste combustibles were crushed in the combustible crusher 140 and then stored in the combustible combustible mixed storage tank 150.

At this time, the combustible mixed storage tank 150, the PLC (Programmable Logic Controller) (500) to control the amount of the landfill waste-derived resources and the control of the calcined lime flow by checking the amount and composition ratio of the mixture from the combustible mixed storage tank 150, It was controlled in connection with the two sorting device 120, the slaked lime input device 155. That is, the feed rate of the household waste combustibles and the landfill waste combustibles is feedback-controlled through the PLC (Programmable Logic Controller) 500 and mixed with the slaked lime input from the slaked lime injector 155 at a predetermined ratio.

The domestic waste combustible material, the landfill waste combustible material, and the slaked lime stored in the pulverized combustible mixed storage tank 150 were mixed in a weight ratio of 1: 1.5: 0.015.

The mixed domestic waste combustible material, the landfill waste combustible material, and the slaked lime were transferred to the solid fuel molding machine 160 to be formed into a mixed solid fuel in a pellet or flake form.

When the low calorific value of the solid fuel is measured by the calorimeter 300 and controlled by the second PLC 600, when the low calorific value of the solid fuel passes a reference low calorific value of 4000 kcal / kg or more, the solid fuel storage tank 170 When the low calorific value of the solid fuel did not pass the reference low calorific value, it was returned to the combustible combustible mixed storage tank 150.

The low calorific value was determined by Equation 2.

Here, the low calorific value was calculated by subtracting the latent heat of condensation of water vapor from the dry high calorific value and subtracting the amount of heat required to evaporate water in the waste.

In addition, the calorific value analysis was a high calorific value of the calorie (Bomb) calorimeter by drying the dried sample to form a pellet. In addition, the high calorific value was measured by wrapping the tissue paper for the calorimeter for the sample that is difficult to make the pellet form or the pellet state is broken by the injection of oxygen during the test.

At this time, the living waste combustible material separation process, the landfill waste combustible material separation process and the odor air generated in the solid fuel molding process is filtered through the air pollution prevention facility 180 to exhaust the filtered air waste and landfill waste The mixed solid fuel was prepared and the low calorific value was measured and listed in Table 1 below.

As in FIG. 2, Example 1 was followed, except that the apparatus further includes a calorie assisting device.

When the caloric auxiliary input device is further placed, it was confirmed that the calorific value of the solid fuel can be adjusted according to the demand of the consumer.

Comparative example  One

Using only the household waste, the process of the household waste path of Example 1 was prepared to produce a solid fuel of household waste alone, and the low calorific value was measured.

Comparative example  2

Using only the landfill waste was carried out in the process of the landfill waste path of Example 1 to prepare a solid fuel of the landfill waste alone and to measure the low calorific value is shown in Table 1 below.

Example 1 Comparative Example 1 Comparative Example 2 Low calorific value (kcal / kg) 4200 3000 3400

Low calorific value of Example 1 of the present invention is 4200 kcal / kg, low calorific value of Comparative Example 1 is 3000 kcal / kg, low calorific value of Comparative Example 2 is 3400 kcal / kg, the mixed solid fuel of the present invention is based on low calorific value It has excellent characteristics over the range of low calorific value 4000 ~ 4500kcal / kg.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes 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 describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas falling within the scope of the present invention should be construed as being included in the scope of the present invention.

101: first shredding shredder 102: second shredding shredder
110: first sorting device 111: first trommel screen
112: first disk screen 113: sorting mixed storage tank
114: moisture content measuring device 115: dryer
116: wind sorter 117-a: metal sorter
117-b: non-ferrous metal sorter 118: near infrared sorter
120: second sorting apparatus 121: second trommel screen
122: second disk screen 130: third screening device
150: combustible mixed mixed storage tank 155: slaked lime input device
160: solid fuel molding machine 170: solid fuel reservoir
180: air pollution prevention equipment 201: caloric aid input device
250: heat exchanger 300: calorimeter
500, 600: PLC

Claims (7)

As an integrated process that links the recycling of landfill waste in the MT (Mechanical- (Biological) Waste Treatment) process of household waste,
S-A1) Process control of PLC (Programmable Logic Controller) which controls and monitors each process as a whole, so that household waste is shredded and shredded by the first shredding shredder and passed through the first sorting device, A first screening process for separating;
S-B1) a second sorting process of separating the landfill wastes carried separately from the household wastes into a second shredding shredder and separating the landfill waste combustible material after passing through a second sorting device;
S-C1) Flammability mixed in the storage tank by controlling the moisture content measuring device of the sorting mixture storage tank which temporarily stores the combustible materials of municipal waste and landfill waste combustible separated by the first and second sorting processes If the water content of the mixture is 10% or less, it is supplied to the following step S-C3), and if the water content is more than 10%, the sorting mixture controlled by the PLC to be supplied to the third sorting device of S-C2) Storage and primary moisture content control process;
S-C2) Drying process and secondary moisture content control to control the moisture content to 10% or less through the drying step of the combustible mixture material with a moisture content of more than 10% inflow through the screening mixture storage and the primary moisture content control process fair;
S-C3) collecting the hot air generated in the drying process through a heat exchanger to use as fuel;
S-C4) Combustible mixtures having a moisture content of 10% or less through the storage of the screening mixture and the primary moisture content control process, as combustible materials without a drier, or flammable mixtures having a moisture content of 10% or less after the drying process and the second moisture content control process. Wind screening and tertiary water content control process to remove fine soils with density screening through wind turbines;
S-C5) Combustibles mixed storage tank for combustibles that have undergone the third sorting process to sequentially select the combustible materials that have passed the wind screening and tertiary water content control process through a metal sorter, a nonferrous metal sorter, a near-infrared optical sorter, and a combustible grinder. Combustibles mixing process to store in;
S-C6) a mixing control process including a PLC control process controlled by a PLC in forming a mixture by mixing with the domestic waste combustible material, the landfill waste combustible material, and slaked lime stored in the pulverized combustible mixed storage tank;
S-C7) transferring to a solid fuel molding machine to form waste solid fuel by the solid fuel molding machine;
S-C8) The low calorific value of the solid fuel is measured by a calorimeter and controlled by a PLC and stored in a solid fuel reservoir when the low calorific value of the solid fuel passes a standard low calorific value of 4000 kcal / kg or more, and the solid fuel If the low calorific value of does not pass the standard low calorific value, the amount of landfill waste is increased in connection with the PLC in the step S-C6) while returning to the pulverized combustible mixed storage tank of step S-C5), or A calorimetry step having a control step of reducing the amount;
S-C9) cooling the waste solid fuel molded by the molding machine to store in the solid fuel reservoir;
S-C10) A method for producing mixed solid fuel of domestic waste and landfill waste through calorimetry, comprising: filtering odorous air generated in a solid fuel forming process and exhausting the filtered air through an air pollution prevention facility.
The method of claim 1,
The water content is a mixed solid fuel production method of household waste and landfill waste using a dryer, characterized in that determined by the number 1 of the following formula.
[1]

The method of claim 1,
The low calorific value is determined by the following number 2, characterized in that the municipal solid waste and landfill waste mixed solid fuel manufacturing method through calorimetry.

[Number 2]

The method of claim 1,
The first sorting device and the second sorting device have one or two to four consecutive configurations as a screen sorter,
The water content control process in the step S-C1) is a mixed solid fuel manufacturing method of household waste and landfill waste through calorimetry, characterized in that the automatic control by a PLC.
The method of claim 4, wherein
The screen sorter is a trommel screen, a disk solid, characterized in that the mixed solid fuel production method of landfill waste.
The method of claim 4, wherein
S-D1) caloric auxiliary material input process, the step of injecting the caloric auxiliary material to increase the calorific value through the caloric auxiliary material input device before the combustible material crusher of the third sorting device; domestic waste and landfill Process for producing mixed solid fuel of waste.
The method of claim 1,
The ratio of the mixture in the S-C5) mixing control step, the calorie characterized in that the mixing by controlling the weight ratio of the household waste combustible material: the landfill waste combustible material: the slaked lime = 1: 0.2 ~ 5: 0.02 ~ 0.5 Method for producing mixed solid fuel of domestic waste and landfill waste through measurement.

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