JP2011200824A - Equipment for producing raw fuel for cement production and method of producing raw fuel for cement production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide equipment for and method of producing raw fuel for cement production, which facilitate maintenance of the equipment and attain improvement in work efficiency.SOLUTION: The equipment for producing raw fuel for cement production is characterized by a fermentation treatment apparatus which has a hopper in the charging port of wastes and which allows wastes to be directly charged into the hopper from a garbage truck. Also, the method of producing raw fuel for cement production is characterized in that wastes are directly charged into the fermentation treatment apparatus in which the charged wastes are fermentation-treated, that the fermentation treated products are stored in a storage warehouse, and that the stored products are conveyed into cement production equipment and the fermentation-treated products conveyed therein are used as raw fuel for cement production.

Description

  The present invention relates to a raw fuel production facility for cement production and a method for producing a raw fuel for cement production.

  Conventionally, since the amount of organic waste such as soot has increased, many proposals and attempts have been made regarding effective treatment methods and reuse methods. As one method, it has been proposed to ferment (compost) organic waste using a rotary fermenter.

  For example, in order to make effective use of cement kilns and other cement manufacturing equipment for the disposal of waste, using a rotary kiln or rotary dryer, waste such as municipal waste stored in garbage bags is directly put into the rotary kiln or rotary dryer. A method of performing a fermentation process has been proposed (Patent Documents 1 to 3).

  2. Description of the Related Art Conventionally, a cement manufacturing factory for carrying out this method has a cement manufacturing raw fuel manufacturing facility 400 attached to a cement manufacturing facility 300 as shown in FIG.

  In this embodiment, municipal waste is introduced from the municipal waste inlet 420 into the fermentation treatment apparatus 402 of the cement production raw fuel production facility 400, and sewage sludge is introduced from the sewage sludge inlet 422 in addition to the municipal waste. Further, a part of the fermented product is returned from the storage and fermentation processing tank 406 to the fermenting device 402 through the line 432.

  The waste moves in the fermentation treatment apparatus 402, and after three days have passed, the fermentation treatment product is taken out from the outlet 428. During fermentation, fermentation proceeds by a mechanism such as an aerobic decomposition action of easily decomposable components by fermenting bacteria that inhabit the natural world on the inlet side.

  The obtained fermented processed product is made to remove iron, stainless steel, and aluminum by using a magnetic separator 408, a high Gaussian separator 414, and an aluminum separator 416 to recycle them. Further, the fermented processed product is adjusted to an appropriate particle size by the primary crusher 410, the trommel 412 and the secondary crusher 418.

  On the other hand, in the cement manufacturing facility 300, the cement is manufactured by operating the raw fuel manufacturing facility 400 for cement manufacturing.

Japanese Patent Laid-Open No. 2001-191059 JP 2001-191060 A Japanese Patent No. 3804045

  Here, conventionally, city garbage etc. are put into the fermentation treatment apparatus 402 by dumping city garbage etc. from a garbage truck into a bucket, moving the bucket by a skip conveyor, and moving the moved bucket to the fermentation treatment apparatus 402 side. It is done by leaning. However, while the garbage dumped bucket is being moved by the skip conveyor, other garbage trucks cannot be dumped into the bucket, so they wait until the bucket returns. Moreover, since municipal waste etc. have strong acidity, the facilities are easily corroded, and the maintenance of the facilities takes time.

  Trommel 412, which is one of separation and removal devices for removing foreign matters that are not used as raw fuel for cement production, is not a compost of fermented products and is used as a raw material for cement production. It is an apparatus for sieving a fermented processed product having an appropriate degree of grain as a raw material for cement production. However, because garbage, paper waste, etc. that pass through the slits of the trommel 412 are in a wet state, the slits are easily clogged, and maintenance is very difficult. Also, the temperature around the equipment is high and the working environment is very bad.

  In view of the above circumstances, an object of the present invention is to provide a raw material production facility for cement production and a production method of a raw material fuel for cement production that can easily perform maintenance of the facility and improve work efficiency. .

In order to solve the above-described problems, the present invention is characterized in that a hopper is provided at a waste inlet, and a fermentation treatment apparatus capable of directly feeding waste from a garbage truck to the hopper is provided. To provide raw fuel production equipment for cement production.
In the present invention, it is preferable to provide a slope in order to put waste directly from the garbage truck into the hopper.
In the present invention, it is preferable that the apparatus further includes a foreign matter separation / removal device for removing the foreign matter in the waste or the fermented product, and the separation / removal device does not contain a trommel.
In addition, the waste is directly input to the fermentation processing apparatus, the input waste is fermented by the fermentation processing apparatus, the fermented processed product is stored in a storage warehouse, and the stored product is manufactured as cement. Provided is a method for producing a raw material fuel for cement production, characterized in that the fermented processed product carried into the facility and used in the cement production facility is used as a raw material fuel for cement production.

  According to the raw material production facility for cement production and the production method of raw material fuel for cement production according to the present invention, maintenance of the facility can be easily performed and work efficiency can be improved.

It is a conceptual diagram which shows one Embodiment of the raw fuel manufacturing equipment for cement manufacture which concerns on this invention. It is a conceptual diagram which shows one Embodiment of the raw fuel manufacturing equipment for cement manufacture which can throw in the waste which concerns on this invention directly. It is a conceptual diagram which shows the conventional raw fuel manufacturing equipment for cement manufacture.

Hereinafter, although the raw fuel manufacturing equipment for cement manufacture and the manufacturing method of the raw fuel for cement manufacture according to the present invention will be described with reference to FIG. 1, the present invention is not limited thereto.
FIG. 1 is a conceptual diagram showing an embodiment of a raw fuel production facility for cement production according to the present invention. A cement production facility 100 is attached to the raw fuel production facility 200 for cement production. The cement manufacturing facility 100 includes a rotary kiln (cement kiln) 102, a clinker cooler 103, a calcining furnace 104, and a suspension preheater 106 as main facilities.

  The rotary kiln 102 includes a burner 108. The burner 108 includes a fermented product to be described later, a blown wind turbine (not shown) for supplying solid fuel such as pulverized coal, a supply pump 110 for supplying liquid fuel such as heavy oil, and an air (not shown) for supplying air. Air supply means such as a blow-in windmill is provided. The rotary kiln 102 supports a cylindrical drum with a support roller (not shown) and can be rotated by a rotating means such as an electric motor (not shown). And it is inclined and installed with a gentle gradient from the feeding part of the cement raw material (also referred to as cement blending raw material) to the outlet of the cement clinker. The cement raw material is collected by the cyclone 107 at the lowermost stage of the preheater, then charged, lifted while rotating on the coating attached to the lining brick on the inner wall of the rotary kiln 102, lowered, and this is repeated. Then, the cement raw material is fired by the radiant heat of the flame formed by the burner 108.

  The clinker cooler 103 is a means for cooling the cement clinker discharged from the rotary kiln 102. The clinker cooler 103 is divided into several chambers, and is cooled by the air supplied by the cooling wind turbine 112 installed in the lower air chamber of each chamber.

  The calcining furnace 104 is an apparatus for calcining cement raw material, and includes a burner 114 for calcining cement raw material. The burner 114 includes an air supply means such as a fermented product to be described later, a blowing wind turbine (not shown) for supplying a solid fuel such as pulverized coal, a supply pump 116 for supplying liquid fuel such as heavy oil, and an air blowing wind turbine (not shown). Is provided. The calcination furnace 104 improves the decarboxylation rate by calcination of the cement raw material, and reduces the thermal load of the rotary kiln 102, thereby ensuring firing and contributing to mechanical protection of the rotary kiln 102 itself. At the same time, the exhaust heat from the rotary kiln 102 is effectively utilized to improve the thermal efficiency of the entire cement manufacturing plant.

  The suspension preheater 106 is a device for preheating cement raw material, and has a configuration in which cyclones 107 are stacked in multiple stages. In each cyclone 107, the gas component and the solid component are separated, and the cement raw material is preheated by exchanging heat between the cement raw material and the gas while suspending the cement raw material in the air flow in the duct.

  On the other hand, the raw material production facility 200 for cement production is a facility for fermenting waste (composting) for the purpose of effectively using waste as raw material fuel for cement production. And storage and fermentation processing tanks 204 and 206. Further, the raw material production facility 200 for cement production is provided with foreign matter separation and removal devices 208 to 218 at the subsequent stage of the fermentation treatment device 202. Similarly to the rotary kiln 102 described above, the fermentation treatment apparatus 202 also supports a cylindrical drum by a support roller (not shown) and is rotated by a rotation means (not shown). Generally, the rotary kiln used for cement manufacture protects the inner wall with a lining brick in order to maintain the fire resistance when the cement is fired. However, the fermentation processing apparatus 202 removes the lining brick. By removing the lining brick, when waste is put into the fermentation treatment apparatus 202 and processed, the movement of the waste is facilitated and the energy consumption for rotating the rotary kiln is greatly reduced. Moreover, it becomes easy to attach the stirring equipment and the partition plate. It is preferable that the fermenter 202 is installed with an inner diameter of the rotary kiln after removing the lining bricks of 2 to 7 m and an inclination of 1.0 to 6.0%, preferably 1.2 to 1.6%. .

  In addition, the fermentation processing apparatus 202 covers the periphery with a heat insulating material. This is for the purpose of maintaining the heat when fermenting the raw material for fermentation and promoting and homogenizing the fermentation. The part to be coated is preferably the entire outer wall of the fermentation treatment apparatus 202. As the heat insulating material, it is preferable to use a light and heat insulating material such as rock wool or glass wool and coat the outer wall of the fermentation treatment apparatus 202 with an appropriate thickness.

  The inside of the fermentation treatment apparatus 202 is partitioned into 4 to 5 chambers by a partition plate. It stays in the fermentation treatment apparatus 202 for three days in a normal operation state. The partition plate has a structure capable of securing the ventilation while blocking the waste that is the object to be processed, that is, a slit-like, perforated plate-like structure or the like. In addition to the above, an agitation facility, a heating facility, or a facility for moving a processed product built in a conventional rotary kiln-type fermentation apparatus can be appropriately attached as necessary.

  The entrance of the fermentation treatment apparatus 202 is separated from the existing suspension preheater. In addition, there are provided, for example, a municipal waste inlet 220, a sewage sludge inlet 222, an inlet 224 for feeding the returned fermented product, and a fermentation gas outlet 226. The fermentation gas outlet 226 is provided with a ventilation wind turbine 219 as an exhaust means, whereby the fermentation gas in the fermentation treatment apparatus 202 can be drawn out and sent to the cement manufacturing facility 100. The exit part of the fermentation treatment apparatus 202 is separated from the existing clinker cooler, and a fermented product outlet 228 is provided. Further, an air blowing port 227 is provided, and the air blowing port 227 is provided with an air blowing windmill 229 as an air supply means, whereby air can be supplied. The air blowing windmill 229 is configured so that the atmosphere and the cooler exhaust from the clinker cooler 103 can be mixed as appropriate. The entrance part and the exit part of the fermentation treatment apparatus 202 may be the same as or opposite to the existing state. In addition, the inlets 220, 222, and 224 at the inlet of the fermentation treatment apparatus 202 are sealed except when the raw materials are charged, and the fermentation gas outlet 226 and the air inlet 227 are also sealed and fermented except when ventilation is performed. The processing device 202 basically has a sealed structure.

FIG. 2 is a conceptual diagram showing an embodiment of a raw fuel production facility for producing cement that can directly input waste according to the present invention. A hopper 262 and a raw material pushing pusher 263 are provided at the municipal waste input port 220 of the fermentation treatment apparatus 202. A slope 261 is provided so that waste can be directly input from the garbage truck 260 to the hopper 262. The waste is input directly into the hopper 262 and is input into the fermentation treatment apparatus 202 by the raw material pushing pusher 263. Since the waste can be directly input, the waste collection vehicle can be input smoothly without waiting. Further, the load on the maintenance of the equipment can be reduced without the equipment being corroded.
The hopper 262 needs to have a sufficient opening so that the waste does not spill when the waste is introduced from the garbage truck 260. For example, since the dimensions of the input port (discharge port when discharging waste) of a 4t car type garbage truck which is a large vehicle are generally about 1700 mm wide and 950 mm high, the hopper 262 The opening diameter needs to be larger than that. The capacity of the hopper 262 is set to a plurality of the loading capacity of one garbage collection vehicle 260. For example, the loading volume of the garbage truck of 4t vehicle type described above, since it is about 8m ^3, the volume of the hopper 262 is, for example, about 30 to 50 m ^3.
The inclination angle of the slope 261 is preferably a higher angle from the viewpoint of reducing the installation area, and is preferably the maximum angle at which the garbage truck 260 can travel safely. For example, it is about 12 to 14 °.

  The storage / fermentation processing tanks 204 and 206 cover the periphery thereof with the same heat insulating material as the fermentation processing apparatus 202. This is for the purpose of promoting the fermentation by maintaining the temperature for further proceeding the fermentation in the fermentation treatment apparatus 202. The part to be coated is preferably the entire outer wall.

  Further, the storage and fermentation processing tanks 204 and 206 are also provided with air supply means (not shown). This is to ensure aerobic conditions and promote curing. Fermentation in the fermentation treatment apparatus 202 is a process called so-called primary fermentation from the viewpoint of composting. If the fermentation is further advanced as necessary, so-called secondary fermentation is completed, and commercialization as compost is achieved. Is also possible. The storage / fermentation processing tank 206 is provided with a quantitative drawer. The fermented processed product from the quantitative drawer can be supplied to both the supply line 230 to the cement manufacturing facility 100 and the return line 232 to the fermenting apparatus 202.

Apparatuses 208 to 218 provided at the subsequent stage of the fermentation treatment apparatus 202 do not convert metal from composted fermentation products, and a foreign matter separation / removal device for removing foreign matters that are unnecessary as raw fuel for cement production. It is. The separation / removal device preferably does not contain trommel. When the trommel is provided, the garbage, paper waste and the like passing through the trommel slit are in a wet state, so the slit is easily clogged, and the maintenance is very difficult. Moreover, the temperature around the equipment is high and the working environment is very bad. Conventionally, trommel was necessary as a separation and removal device, but it is not always necessary because it can be compensated by scaling up a crusher or the like.
The magnetic separator 208 attached to the belt conveyor 209 is for mainly removing iron from the fermented processed products carried by the belt conveyor 234 and the skip conveyor 236 by magnets. The magnetic separator 208 is provided with only one stage in this embodiment, but can also be designed as a multistage having two or more stages. The primary crusher 210 primarily crushes the fermented product excluding such iron. The high gauss sorter 214 is a device that receives a portion including stainless steel, aluminum, and the like from the primary crusher 210. This apparatus divides the workpieces into stainless steel and others. The other parts include aluminum and raw material for producing cement. The aluminum sorter 216 is an apparatus for separating aluminum and a portion suitable as a raw material for cement production from the portion after the stainless steel is removed. The portion suitable as the raw material for cement production is sent to the secondary crusher 218. The secondary crusher 218 is an apparatus for adjusting the raw material compatible part for cement production that could not be crushed by the primary crusher 210 to a suitable particle size. The raw material fuel for cement production obtained here is sent to the belt conveyor 240 via the belt conveyor 239. The separation / removal device for these foreign substances after the fermentation treatment apparatus 202 is installed in a building provided with ventilation means so that odors from fermentation treatment products and the like are not leaked to the outside as much as possible.

  Next, the operation of the cement manufacturing plant having the above configuration will be described. In the present embodiment, the cement manufacturing raw fuel is manufactured by the cement manufacturing raw fuel manufacturing facility 200 installed in the cement manufacturing factory. Municipal waste is input from the municipal waste input port 220 into the fermentation treatment apparatus 202 of the raw fuel manufacturing facility 200 for cement production. The components of municipal waste to be introduced are preferably 15 to 60% by weight of moisture, 30 to 60% by weight of combustibles, and 3 to 30% by weight of ash. When throwing in, do not pre-treat city garbage bags. Further, sewage sludge is introduced from the sewage sludge inlet 222 in addition to the municipal waste. The components of the sewage sludge to be added preferably have a water content of 50 to 90% by weight, a combustible content of 6 to 35% by weight, and an ash content of 2 to 15% by weight. The introduction of municipal waste and sewage sludge at the same time improves the efficiency of waste treatment by simultaneously treating municipal waste and sewage sludge, and the moisture content of the sewage sludge is appropriately adjusted to the moisture content as a raw material for fermentation. It is for adjusting and keeping a fermentation state favorable. If the moisture content suitable for fermentation is 45 to 60% by weight, the ratio of sewage sludge in the mixture is preferably 0 to 85% by weight. The combustible content in the mixture is preferably 10 to 60% by weight, and the ash content is preferably 2 to 30% by weight. If necessary, fertilizers (urea, ammonium sulfate, ammonium chloride, etc.), water, moisture conditioners (rice straw, rice bran, sawdust, paper, wood chips, etc.), cut rubber tires for maintaining voids, and the like are added. Fermentative bacteria can also be supplied by returning the fermented product to a raw material.

  Further, a part of the fermented product is returned from the storage and fermentation processing tank 206 to the fermenting apparatus 202 through the line 232. This is for the purpose of stabilizing the cells in the fermentation treatment apparatus 202 and stabilizing the quality of the fermentation treatment product.

  Of the 4-5 rooms in the fermentation processing apparatus 202, the waste is first put into a room closest to the entrance. There is a partition between the rooms, but the waste moves between the rooms through an opening provided in the partition. Then, after three days, the fermented product is taken out from the outlet 228. As described above, the fermentation treatment apparatus 202 is installed with an inclination of 1.0 to 6.0%, and the workpieces being fermented easily move by the rotation. In addition, during the fermentation treatment period, the fermentation treatment apparatus 202 is preferably rotated at a speed of 0.5 to 3.0 rpm, for example, by setting the inner diameter from which the lining brick is removed to 4 to 5 m.

  During the fermentation, fermenting bacteria (thermophilic bacteria, general bacteria, actinomycetes) that inhabit everywhere in the natural environment are fermented (composted) by a mechanism such as aerobic degradation of readily degradable components. ) And the temperature of the feedstock reaches up to 70 ° C. within 24 hours. And in the fermentation processing apparatus 202, the waste which is a raw material completes the fermentation process generally called primary fermentation. That is, organic substances (carbohydrates, proteins, etc.) that are unstable under aerobic conditions are converted into stable substances that can be stored with little bad odor. The room temperature is monitored by an appropriate temperature sensor. And the temperature in the fermentation processing apparatus 202 can be adjusted appropriately by controlling the temperature of the air supplied by the air supply means, the input rate of waste, and the like corresponding to the monitored temperature. During the fermentation process, the fermentation processing apparatus 202 rotates at the above-described rotation speed, so that bags such as garbage bags of city garbage are broken and the fermentation process is not hindered. Such garbage bags and the like are scraped up by the rotation of the fermentation treatment apparatus 202, dropped, and repeatedly dropped, whereby most of the bags are broken in the first chamber.

  On the other hand, during the fermentation process, the fermentation gas in the fermentation processing apparatus 202 is drawn out from the fermentation gas outlet 226 by the wind turbine 219 and sent to the calcining furnace 104 of the cement manufacturing facility 100 through a pipe. Thereby, ammonia etc. which generate | occur | produce in a fermentation process are decomposed | disassembled and waste gas is deodorized. In addition, air is supplied from the air blowing port 227 provided on the outlet side of the fermented product by the air blowing wind turbine 229, and the aerobic condition in the fermentation processing apparatus 202 is maintained. Thereby, fermentation by aerobic bacteria can be maintained. Here, as described above, the air blowing wind turbine 229 is configured to be able to appropriately mix the atmosphere and the cooler exhaust of the clinker cooler 103, so that the temperature at the time of supplying air can be set appropriately. When exposed to temperatures of 50 ° C. or more for a day, various harmful bacteria are sterilized or inactivated and are hygienic and safe. On the other hand, the fermentation rate of aerobic bacteria is most accelerated at about 60 ° C. Considering these, it can be said that it is preferable to control the temperature to about 55 to 60 ° C. Therefore, the temperature of the supplied air can be appropriately set by appropriately adjusting the ratio of the cooler exhaust added according to the temperature of the atmosphere. In addition, the air supply may be performed while preheating the air in the supply air with various waste heat generated by the cement manufacturing apparatus.

After the above three days of fermentation, suitable properties of the fermented product are as follows. E. coli group count (sanitary indicator microorganisms, factory drainage test method prescribed in JIS K0102-1993-quantified by bacterial test): 10 ³ / g or less This indicator should be free of harmful bacteria such as Salmonella typhi and Salmonella The absence of such harmful bacteria can be confirmed by satisfying this value. In order to use organic waste having a particle size composition of 20 mm or less as a raw material for cement production of 90% (weight ratio) or more, it is preferable to satisfy this level of particle size composition. The composition of the fermented product is preferably adjusted to a moisture content of 40 to 60% by weight, a combustible content of 10 to 55% by weight, and an ash content of 4 to 20% by weight. The calorific value is preferably 1500 kcal / kg (dry basis) or more. If it is a fermented processed product satisfying such specifications, it can be charged into the charging position without any further processing as a raw material for cement production.

  The fermented processed product obtained as described above is subjected to removal of iron, stainless steel, and aluminum by the magnetic separator 208, the high Gaussian separator 214, and the aluminum separator 216, thereby recycling them. Further, the fermented processed product is adjusted to an appropriate particle size by the primary crusher 210 and the secondary crusher 218. Thus, the quality at the time of using as a raw material fuel for cement manufacture can be made suitable by providing a crushing apparatus in multiple stages. In the present invention, plastic waste is not removed. This is because the plastic waste is used as it is as part of the raw material for cement production. By using these primary and secondary crushers 210 and 218, plastic waste is also shredded to an appropriate size. The fermented processed products collected by the belt conveyor 240 are sent to the storage and fermenting processing tanks 204 and 206 as raw materials for cement production. In the present embodiment, the fermented processed products are sent to the storage and fermenting processing tanks 204 and 206 by the bucket elevators 242 and 243. The fermented products sent to these storage and fermentation processing tanks 204 and 206 are circulated by a circulation system. That is, belt conveyors 244 and 246 are provided under the tanks 204 and 206, and the fermentation processed products partially taken out from these are vertically transported by the bucket elevator 248, and again the storage and fermentation processing tank 204, Circulated to 206. Thereby, an aerobic state is maintained, and homogenization as a raw material fuel for cement production of the fermented product can be achieved by such a mixing process. Then, the fermented processed product is supplied as a raw material for cement manufacturing from the line 230 to the cement manufacturing facility 100 via the belt conveyor 250 or returned to the fermenting processing apparatus 202 via a part of the line 232.

  On the other hand, in the cement manufacturing facility 100, the cement raw material is processed in parallel with the operation of the cement manufacturing raw fuel manufacturing facility 200. That is, the cement raw material is preheated by each cyclone 107 in the suspension preheater 106, calcined by the calcining furnace 104, and calcined by the rotary kiln 102. In the present embodiment, the raw material fuel for cement production obtained as a fuel for firing in the rotary kiln 102 or a fuel for calcining in the calcining furnace 104 is passed from the storage / fermentation tank 206 through the line 230 to the rotary kiln. 102 is supplied to the kiln bottom 102 or the calcining furnace 104. Moreover, the fermentation gas from the fermentation treatment apparatus 202 is sent to the calciner 104 (or the rotary kiln 102), and deodorization is performed under high heat. By such a deodorizing operation, a denitration effect can also be obtained. In addition, the air from the building surrounding the foreign matter separation / removal device can be similarly deodorized.

  On the other hand, the raw material production facility for cement production and the production method for raw material fuel for cement production according to the present invention have been described with respect to the embodiment shown in FIG. 1, but the present invention is limited to such an embodiment. Instead, modifications, changes and additions obvious to those skilled in the art are all included in the technical scope of the present invention. For example, in the above embodiment, the object to be treated is municipal waste, but the present invention can of course be implemented even with other organic waste that can be composted.

  In the fermentation processing apparatus 202, the inlet / outlet of the rotary kiln is the same as that at the time of cement production, but it is not necessarily the same. This can be reversed and used. In such a case, it is necessary to reverse the tilt of the rotary kiln.

  The fermentation treatment apparatus 202 is divided into 4 to 5 and the fermentation treatment is performed for three days. However, the way of classification is not limited to this. In some cases, there may be fewer sections with 3 or fewer rooms, or more sections with 6 or more rooms. Further, the fermentation treatment period is not limited to three days, and may be a shorter period of less than three days as long as harmful microorganisms are killed. This is because in the case of the purpose of use as a raw material for cement production, it is sufficient that so-called primary fermentation is completed, and it is not necessary to complete composting. In addition, when aiming at complete composting, it can age | cure | ripen using the tank for storage and fermentation processing as mentioned above. Although two storage and fermentation tanks 204 and 206 are provided, a plurality of storage and fermentation treatment tanks 204 and 206 may be provided. In addition, these tanks 204 and 206 are of a size cylinder type in order to make it easy to take out the built-in items, but they can be of a divergent type. This is to make it easier to take out the built-in items. As the storage tank, other preheater equipment provided in the cement kiln can be used. Examples of the preheater equipment include a calcining furnace, a cyclone, a duct portion, and the like. When such a preheater facility is also used as a storage tank, it is preferable to make appropriate changes such as removing the lining brick. In the embodiment of FIG. 1, a part of the fermented processed product is returned to the fermenting processing apparatus 202, but it is not always necessary to return it. Although not implemented in the embodiment of FIG. 1, the fermentation gas from the storage and fermentation processing tanks 204 and 206 is returned to the cement manufacturing apparatus 100 and used as a denitration agent in the same manner as the fermentation gas from the fermentation processing apparatus 202. You can also In this case, the storage and fermentation processing tanks 204 and 206 are also provided with exhaust means. Although not implemented in the embodiment of FIG. 1, the fermented processed product can be input to the cement blending raw material manufacturing process as part of the cement blending raw material.

  EXAMPLES Hereinafter, although this invention is demonstrated concretely using an Example etc., this invention is not limited to an Example.

Example 1
Fermentation treatment of municipal waste using the raw fuel production facility for cement production provided with a fermentation treatment apparatus that can directly input waste from a garbage truck into a hopper according to the present invention, and obtained fermentation treatment The product was evaluated.
City trash was thrown into a fermentation treatment device equipped with a hopper that could be put directly from a garbage truck. The garbage truck put city garbage (up to about 2 minutes) into the hopper, then left the hopper entrance so that the next garbage truck could go to the hopper. The municipal waste thrown into the fermentation treatment apparatus was subjected to fermentation treatment for 3 days. The fermentation treatment apparatus had an inner diameter of 5 m from which the lining brick was removed, and was rotated at a rotation speed of 1.0 rpm. During the fermentation process, the fermenter was rotated at this rotational speed, and bags such as garbage bags of municipal waste were broken. However, the fermenter was not hindered. Such garbage bags were almost broken in the first chamber of the fermentation treatment apparatus. By this fermentation treatment, raw garbage, paper, etc. in municipal waste were cut into small pieces and turned into a soil-like processed product. However, plastics such as garbage bags and irons were not shredded. Thereafter, iron was removed with a magnetic separator, and crushing was performed for the purpose of fragmenting plastics and the like.

  According to the present invention, by using the raw fuel production facility for cement production equipped with a fermentation processing apparatus capable of directly feeding waste from the garbage truck to the hopper, the standby time of the garbage truck (injecting garbage) The waiting time until the work was started was greatly shortened, and the introduction of garbage from the next garbage truck could be started immediately. Further, by using a separation / removal apparatus that does not contain a trommel, a smooth separation / removal process could be performed.

  The composition of the obtained fermented processed product had a water content of 50% by weight, a combustible content of 45% by weight, and an ash content of 5% by weight. The calorific value was 3000 kcal / kg (dry basis). From this, it is preferable as a raw material fuel for cement production by using the raw material production facility for cement production equipped with a fermentation treatment apparatus according to the present invention that can directly put waste into a hopper from a garbage truck. It has been demonstrated that the final product can be obtained.

DESCRIPTION OF SYMBOLS 100 Cement production facility 102 Rotary kiln 103 Clinker cooler 104 Calciner 106 Suspension preheater 107 Cyclone 108, 114 Burner 110 Supply pump 112 Cooling windmill 116 Supply pump 200 Cement production raw fuel production facility 202 Fermentation processing device 204, 206 Storage and fermentation Processing tank 208 Magnetic separator 210 Primary crusher 214 High gauss sorter 216 Aluminum sorter 218 Secondary crusher 219 Ventilation wind turbine 220 Municipal waste inlet 222 Sewage sludge inlet 224 Feeding back the fermentation processed product Input port 226 Fermentation gas outlet 228 Fermented product outlet 227 Air blowing port 229 Air blowing windmill 234, 209, 239 Belt conveyor 236 Skip conveyor 240, 244, 246, 250 Belt conveyor 42, 243, 248 Bucket elevator 260 Garbage truck 261 Slope 262 Hopper 263 Raw material pushing pusher 300 Cement production facility 400 Raw material production facility for cement production 402 Fermentation processing device 406 Storage and fermentation processing tank 408 Magnetic separator 410 Primary crusher 412 Trommel 414 High Gauss sorter 416 Aluminum sorter 418 Secondary crusher 420 Municipal waste inlet 422 Sewage sludge inlet 428 Fermented product outlet 432 line

Claims (4)

  A raw fuel production facility for producing cement, which is provided with a fermentation treatment apparatus in which a waste hopper is provided at a waste inlet, and waste can be directly fed into the hopper from a garbage truck.   The raw fuel production facility for cement production according to claim 1, further comprising a slope for directly putting waste into the hopper from a garbage truck.   The cement production according to claim 1 or 2, further comprising a foreign matter separation / removal device for removing foreign matter in the waste or the fermented product, wherein the separation / removal device does not contain trommel. Raw fuel production equipment. Put the waste directly into the fermentation processing equipment,
Fermentation treatment of the input waste in the fermentation treatment apparatus,
Storing the fermented processed product in a storage warehouse;
Bring the stored items into a cement manufacturing facility,
A method for producing a raw material fuel for cement production, wherein the fermented processed product carried into the cement production facility is used as a raw material fuel for cement production.

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