JP2007321379A - Snow melting system using food product residue - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technology of a snow melting system using food product residue for melting the snow fallen on the upper surface of a snow melting device by guiding the heat of fermentation (heat of decomposition) generated from food waste to the snow melting device. <P>SOLUTION: In the facility 24 of a food product-related company, foods supplied to customers and food product residue produced due to food-supply services are generated in the form of residue. An organic substance fermentation machine 25 decomposes the charged food residue N by the function of microorganisms while generating the heat P of decomposition. A heat supply pipe 26 is connected to the snow melting device 28 laid down on a walk and drive way 27. When snow falls on the upper surface of the snow melting device 28, the heat P of decomposition generated and output from the organic substance fermentation machine 25 flows through the heat supply pipe 26 in the direction of an arrow D and into the snow melting device 28. The energy of heat of decomposition is dissipated by the function of the snow melting device 28 to melt the fallen snow S. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention conducts food residue discharged from a hotel, hospital, store, etc., that is, fermentation heat (decomposition heat) generated from food waste to a snow melting device, and melts snow accumulated on the upper surface of the snow melting device. The present invention relates to a snow melting system using food residues.

As an example in the prior art, there is a snow melting apparatus technique disclosed in Japanese Patent Laid-Open No. 2001-185198 as shown in FIG. If it demonstrates about this, the snow melting apparatus A has the hydrogen production apparatus 1 as a hydrogen generation means which produces hydrogen as shown in FIG. The hydrogen production apparatus 1 has a reaction vessel 2. The reaction vessel 2 is provided with a microorganism inlet 3 for introducing microorganisms. Further, a material input port 4 for supplying a material for hydrogen production is provided. Furthermore, a hydrogen discharge port 5 is provided for discharging hydrogen produced in the reaction vessel 2. The reaction vessel 2 is connected to suction means such as a vacuum pump so that the inside can be set to a negative pressure. In addition, fins 6 are provided inside the reaction vessel 2. The fin 6 plays a role of promoting the reaction by stirring the organic material charged into the reaction vessel 2. As an example of the fin 6, in order to enable even stirring vertically and horizontally, for example, in the case of the fin 6 composed of two blades, one of the blades is provided so as to be inclined obliquely upward from the center line. One blade is provided so as to be inclined obliquely downward from the center line. However, the fins 6 may have any shape as long as the inside of the reaction vessel 2 can be well stirred. The fins 6 are made of stainless steel in this embodiment, but the whole may be a multi-hole adsorbing member such as a magnetic material or ceramic. With such a material, when a metal such as mercury or a copying toner is mixed in the organic material put in the reaction vessel 2, it is possible to capture them without diffusing them. In addition to stirring with the fins 6, the stirring may be performed by, for example, swinging the entire reaction container 2 or rotating the entire reaction container 2. A motor 7 that is directly connected to the fin 6 is provided below the reaction vessel 2. A monitoring device 8 is provided outside the reaction vessel 2 to monitor the state of the reaction inside the reaction vessel 2. The monitoring device 8 monitors the reaction time and the temperature and pH during the progress of the reaction, and always calculates the reaction time. Further, the monitoring device 8 can communicate that the reaction has converged to the outside using means such as a buzzer or a lamp. One end side of a discharge pipe 9 is connected to the hydrogen discharge port 5. Further, a hydrogen storage chamber 10 in which a hydrogen storage alloy 10 a is stored as a hydrogen storage means is connected to the other end side of the discharge pipe 9. One end side of the supply line 11 is further connected to the hydrogen storage alloy 10 a, and the other end side of the supply line 11 is connected to the valve 12. The hydrogen storage alloy 10a is an alloy that reacts with hydrogen to become a metal hydride. When the gas pressure is increased or the temperature is lowered in hydrogen gas, the hydrogen storage alloy 10a absorbs hydrogen and generates heat, and when the gas pressure is lowered or the temperature is increased, hydrogen is stored. Has the property of absorbing heat by releasing The hydrogen storage alloy 10a includes various types such as Mg—Ni, La—Ni, and Ti—Mn. One end side of the branch pipe 13 is branched and connected from the middle part of the discharge pipe 9. The other end of the branch pipe 13 is connected to a fuel cell 15 serving as energy conversion means via a valve 14. For this reason, hydrogen generated in the hydrogen production apparatus 1 and hydrogen stored in the hydrogen storage alloy 10 a are supplied to the fuel cell 15. The fuel cell 15 is supplied with air containing oxygen in addition to hydrogen. As a result, oxygen and hydrogen react to generate water and heat, producing electricity. In this case, the power generation efficiency is as high as that of large-scale thermal power generation, and the total efficiency is, for example, 80% or more. In addition, basically only water is generated, so the energy is very clean. . The fuel cell 15 is connected to a control device 16 serving as a control means for controlling the supply amount of hydrogen. For this reason, the control device 16 receives power supply from the fuel cell 15 and supplies a part of this power to the hydrogen production device 1, the monitoring device 8, the valves 12 and 14, and controls these and the fuel cell 15. Do. That is, the control device 16 performs reaction control, electricity generation control, and the like of the hydrogen production device 1 and the fuel cell 15. Further, when electricity is generated in the fuel cell 15, the control device 16 sends predetermined power to the motor 7 to rotate the fins 6. As a result, the fin 6 stirs the organic material and the microorganisms inside the reaction vessel 2. The control device 16 uses the fuel cell 15 as a main power source, but is connected to a normal AC power source so that the valves 12 and 14 can be reliably controlled even when the power generation of the fuel cell 15 is insufficient. Alternatively, a precharged storage battery may be connected. A valve 12 is provided at a portion where the branch conduit 13 branches from the discharge conduit 9, and a valve 14 is provided at a midway portion of the branch conduit 13. The valves 12 and 14 are controlled by the control device 16 and control the amount of hydrogen flowing into the hydrogen storage alloy 10a and the fuel cell 15. That is, the amount of hydrogen required for the rotation of the fin 7 is constant. For this reason, all the generated hydrogen is used for driving the fins 7, and when hydrogen exceeding this amount is generated, the opening degree and the opening direction of the valves 12, 14 are adjusted by the control device 16 described above, and the hydrogen storage chamber. In this configuration, hydrogen is fed to the 10 side or used for a heating wire 17 to be described later. The valves 12 and 14 are not necessarily provided at the illustrated positions, and may be provided at any positions as long as the hydrogen generated in the reaction vessel 2 can be controlled to flow into the hydrogen storage chamber 10 and the fuel cell 15. Further, a flow rate control means other than the valves 12 and 14 may be provided. The valve 12 has a configuration that can take three modes: a state in which generated hydrogen is supplied only to the hydrogen storage chamber 10, a state in which only the fuel cell 15 is supplied, and a state in which both are supplied to the fuel cell 15. The fuel cell 15 is connected to a heating wire 17 serving as an electric / heat converting means. The heating wire 17 is laid at a predetermined interval below the road surface 18. Various sensors such as a snowfall sensor and a temperature sensor may be used for the electric power supply control of the heating wire 17, and these sensors are connected to the control device 16.

As another example in the prior art, there is a technology of a waste treatment recycling type district heating and cooling system disclosed in Japanese Patent Laid-Open No. 8-611146 as shown in FIG. Describing this, FIG. 4 shows a basic configuration of a conventional waste treatment recycling type district cooling and heating system. The basic configuration includes a user building group B, a building group C, a waste treatment / recycling type district heating / cooling center 19, a chilled / hot water piping system 20 and a sewage reuse piping system 21 connecting them. This system is based on the integration of the waste treatment and recycling system and district heating / cooling system that had been installed individually so far that heat and materials can be interchanged. Waste paper recycling equipment 22 as waste paper recycling equipment 22a and sewage treatment equipment 22b, heat supply equipment 23 using fossil fuel 23a such as petroleum, coal, LNG, etc. Boiler 23b, hot water production heat exchanger 23c and cold water production This is composed of an absorption refrigerator 23d for use. The waste treatment / recycling district heating / cooling center 19 includes a separator 22c to separate garbage. The used paper recycling facility 23a mainly includes a used paper disaggregation process, a bleaching process, a deinking process, and a paper making process. The sewage treatment facility 22b is composed of a primary treatment process such as a screen and coagulation sedimentation, a secondary treatment process comprising an activated sludge tank and a sedimentation tank, and a tertiary treatment process comprising decolorization, deodorization and sterilization such as activated carbon adsorption and ozone oxidation. The In particular, the tertiary treatment process is indispensable for the reuse (recycling) of toilet water such as middle water. Each process requires a large amount of heat energy. The temperature lower than the steam generated in the boiler 23b is sufficient, and the waste heat after being used as the driving steam of the absorption chiller 23d for producing cold water and the heat source for producing hot water is also sufficiently used as the heat source for the used paper recycling facility 23a and the sewage treatment facility 22b. it can. In cold water production, a large amount of waste heat of about 40 ° C. is discharged from the absorption refrigerator 23d, and this heat can also be used effectively. The waste treatment recycling unit 22 requires a large amount of heat at a relatively low temperature, while the heat supply unit 23 is a large amount of heat generation unit and has a relatively low amount of heat, and how to effectively use this heat. Kag affects the thermal efficiency. By combining the two in this way and heat accommodation, it is easy to control the amount of heat demand and the amount of supply, and the utilization temperature of the two is different, so the heat supply unit 23 uses high-temperature heat and is further discharged. By utilizing relatively low-temperature heat in the recycling unit 22, the heat energy is utilized from the highest temperature to the lowest temperature.
Japanese Patent Laid-Open No. 2001-185198 Japanese Patent Laid-Open No. 8-611146

According to one example in the prior art, a hydrogen generating means is provided in a snow melting device, and an organic material is previously introduced into the hydrogen generating means or a microorganism belonging to the genus Clostridium which is an anaerobic bacterium is previously introduced. When the reaction between the microorganism and the organic material further proceeds, the amount of hydrogen generated increases, and more hydrogen is supplied to the fuel cell than is necessary for the rotational driving of the fins. As a result, electricity for the heating wire is generated. If the generated hydrogen is an amount that can generate more power than the power supplied to the fins and the heating wire, or when the heating wire is not turned on, the excess hydrogen generated is stored in the hydrogen storage alloy Although this device is complicated and it is necessary to produce microorganisms separately, and there are technologies that use it for power generation and heat from biogas generated in anaerobic fermentation, There was a bottleneck that the heat generated in the process of aerobic fermentation that does not occur cannot be reused.

According to another example in the prior art, a waste treatment recycling facility that converts waste such as paper and garbage into recycled paper and fertilizer and a heat supply unit that supplies cold and hot water for district heating and cooling By integrating, it is a technology that simultaneously transports waste and heat and uses the excess heat from the heat supply section to the recycling section, but it is used only for indoor heating and cooling, and it uses snow melting for cold areas. No idea or technology has been established to enable this. Although there are technologies for recovering and using power generated by methane gas and heat generated in the process of anaerobic decomposition, there is a problem that it is not a technology used directly for snow melting technology.
The snow melting system using food residues and the like according to the present invention was invented to solve the above problems.

The snow melting system using food residues and the like according to the present invention, when recycling food residues generated at hotels, restaurants, hospitals, etc., is fertilized after fermentation through self or a processing company, but occurs in the process The fermentation heat to be used was unused despite the high temperature of 50-80 ° C. In the present invention, in order to make this unused heat useful energy, a new snow melting system that integrates an organic fermentation processing machine for fermenting food residues, a snow melting apparatus installed on a walking road, and a heat supply line interposed therebetween. The system consists of the following components and means.
That is, according to the first aspect of the present invention, an organic fermentation processing machine that aerobically ferments food residues taken out and charged from various facilities, and heat supply that conducts heat of decomposition from the organic fermentation processing machine It is characterized by comprising a pipe and a snow melting device arranged and laid on a walking road that melts the snow accumulated by the heat of decomposition transmitted from the heat supply pipe.

According to the invention described in claim 2, a food-related business facility that produces food residues and the like, an organic matter fermentation treatment machine that aerobically ferments food residues and the like introduced from the food-related business facilities, It consists of a heat supply pipe that conducts the heat of decomposition from the organic matter fermentation treatment machine, and a snow melting device that is placed and laid on the pedestrian road that melts the snow that has accumulated with the heat of decomposition conducted from the heat supply pipe. It is characterized by that.

According to invention of Claim 3, the biogas plant which produces | generates the organic waste from livestock, the organic matter fermentation processing machine which carries out anaerobic fermentation of this organic waste thrown in from this biogas plant, It consists of a heat supply pipe that conducts the heat of decomposition from the organic matter fermentation treatment machine, and a snow melting device that is placed and laid on the pedestrian road that melts the snow that has accumulated with the heat of decomposition conducted from the heat supply pipe. It is characterized by that.

According to a fourth aspect of the invention, in the first, second or third aspect of the invention, the heat supply pipe is constituted by a heat pipe.

According to a fifth aspect of the present invention, in the first, second, or third aspect of the present invention, the snow melting device is constituted by a heat medium circulation pipe having a closed loop of a large number or a plurality of rows.

The snow melting system using the food residue and the like according to the present invention has the following effects because it has the above-described configuration and action.
That is, according to the present invention according to claims 1 to 5, the food residue generated in each facility such as a hotel, a restaurant, or a hospital is recycled and converted into fertilizer after fermentation through self or a processing company. The fermentation heat to be used was unused despite the high temperature of 50-80 ° C. Focusing on this point, the construction of the Food Recycling Law will continue to promote the reuse of food residues at each of the above facilities, and the development of a system that simultaneously satisfies the organic matter fermentation processing machine and the snow melting function. By promoting reuse, there is an effect that a comfortable living environment excellent in unnecessary safety and cost such as snow removal can be obtained by utilizing the heat energy obtained as a secondary. In addition, food residue processing by aerobic fermentation is adopted in hotels and the like which are service industries, and according to the present invention, in addition to fertilization feed, the generation of odor is prevented and a specific method of utilizing the heat of decomposition by aerobic fermentation There is an effect of providing. In addition, by applying the present invention to recycling (fertilizing feed) as a secondary function of food residues (food waste) in facilities such as hotels, restaurants, hospitals, etc., it is possible to achieve cogeneration. There is an effect that energy can be used without waste. In addition, compared to conventional snow melting technology, the initial cost and running cost are significantly reduced. And by utilizing this invention, it becomes applicable also to the facilities which discharge | emit organic substances, such as a ranch, an apartment house, and a timber shop, and there exists an effect that it can utilize widely.

DESCRIPTION OF EMBODIMENTS Embodiments in a snow melting system using food residues and the like according to the present invention will be described below in detail with reference to the accompanying drawings.
FIG. 1 is a system configuration diagram showing an example of an embodiment in a snow melting system using food residues and the like according to the present invention.
FIG. 2 is a diagram showing the flow of the heat transfer medium in the system configuration shown in FIG.

Reference numeral 24 denotes a facility of a food business operator such as a hotel, restaurant or hospital. In the food service provider's facility 24, a food residue N accompanying a meal provided to the customer, a meal providing service, or the like is generated as a residue. This food residue N is usually recycled. Reference numeral 25 denotes an organic matter fermentation treatment machine, which inputs the food residue N taken out from the facility 24 of the food related business operator, and ferments organic waste (food residue N) using, for example, microorganisms. This organic waste (food residue N) is fish and fish waste, vegetable waste, garbage, etc., or animal and plant organic waste including cattle dung and chicken manure when the food service provider's facility 24 is a poultry house or a cow barn. is there.

The organic matter fermentation treatment machine 25 decomposes the input food residue N into organic matter and generates the generated decomposition heat P. A heat supply pipe 26 is connected to or integrated with the decomposition heat P outlet side in the organic matter fermentation treatment machine 25. The heat supply pipe 26 is connected to a snow melting device 28 disposed and laid on the walking path 27. The snow melting device 28 is formed of, for example, a closed loop of a large number or a plurality of rows and is constituted by a heat medium circulation pipe, and circulates the decomposition heat P fed from the organic matter fermentation treatment machine 25 side. This pipe may be connected to the heat supply pipe 26 and may be composed of the same structure and the same material. When there is snow on the upper surface of the snow melting device 28, the decomposition heat P generated and output from the organic matter fermenting machine 25 flows in the direction of arrow D through the heat supply pipe 26 and flows to the snow melting device 28. To send. The snow melting device 28 dissipates decomposition heat energy and melts snow S.

In the above-described configuration, the food residue N generated at the facility 24 of the food-related business operator is transported and charged into the organic matter fermentation treatment machine 25 by a belt conveyor type or the like by an automatic transport means or a manual transport method.
Further, the present invention is not limited to the case where the present invention is applied to the facility 24 of the food related business, and the object of the present invention can be achieved even when applied to a biogas plant using organic waste such as cattle and chicken. That is, the biogas plant is a recycling plant that enables recycling of organic waste such as cattle and chicken livestock manure. Then, livestock manure and organic waste are anaerobically fermented and the generated biogas is used to recover power and heat. Furthermore, liquids, such as a methane fermentation liquid after fermentation, are utilized as an organic fertilizer.

Next, the operation and the like of the embodiment in the snow melting system using the food residue and the like according to the present invention will be described.
As shown in FIG. 2, the food residue N generated from the facility 24 of the food related business operator is put into the organic matter fermentation treatment machine 25 by an automatic transport means or a transport method by human power. The organic matter fermentation treatment machine 25 aerobically ferments the food residue N that has been input by the action of microorganisms and the like, and generates decomposition heat P, which is sent to the heat supply pipe 26. The heat supply pipe 26 is constituted by, for example, a heat pipe or a pipe similar to the heat pipe, and sends and transfers the decomposition heat P as a heat transfer medium to the heat pipe or the like. Further, the inside of the heat supply pipe 26 may be configured to flow by using a blow or a pump with a gas such as air or a liquid with antifreeze as a heat medium.

The decomposition heat P sent from the organic matter fermentation treatment machine 25 and the heat supply pipe 26 is conducted to the snow melting device 28. The snow melting device 28 circulates and sends the decomposition heat P and dissipates the decomposition heat P to the outside. And when the snow S has accumulated on the upper surface, the snow S is melted.

On the other hand, the organic fermenter 25 generates fermented ferment N1 after fermenting the input food residue N. The fermented ferment N1 is taken out from the organic fermenter 25, and the fermented ferment N1 is used as a pet food. Animal fertilizer feed N2 can be produced. This is a secondary function of the snow melting system according to the present invention.
In addition, it is possible to adopt a robot means in the snow melting system according to the present invention to configure unmanned operation and to save labor.

It is a system configuration figure showing an example of an embodiment in a snow melting system using food residue etc. concerning the present invention. It is a figure which shows the flow of the heat transfer medium in the system configuration | structure shown in FIG. It is a block diagram which shows the snow melting apparatus as one example in a prior art. It is a block diagram of the waste treatment recycling type district heating and cooling system as another example in a prior art.

Explanation of symbols

24 Facilities for Food Related Businesses 25 Organic Fermentation Processing Machine 26 Heat Supply Pipe 27 Pedestrian Road 28 Snow Melting Equipment P Decomposition Heat N Food Residue N1 Food Residue Fermented N2 Food Residue Fertilizer S Snow

Claims (5)

Organic matter fermentation treatment machine for aerobic fermentation of food residues taken out and charged from various facilities, heat supply pipe for conducting heat of decomposition from the organic matter fermentation treatment machine, and conduction from the heat supply pipe A snow melting system that uses food residues, etc., composed of a snow melting device that is placed and laid on a walking path that melts snow accumulated by decomposition heat. Conducts heat generated from food-related business facilities that produce food residues, etc., organic fermentation processing equipment that aerobically ferments food residues that are input from the food-related business facilities, and heat of decomposition from the organic fermentation processing equipment A snow melting system using a food residue or the like, which is composed of a heat supply pipe that heats and a snow melting device that is disposed and laid on a pedestrian road that melts snow accumulated by the heat of decomposition transmitted from the heat supply pipe. A biogas plant for producing organic waste from livestock, an organic fermentation treatment machine for anaerobically fermenting the organic waste input from the biogas plant, and conducting heat of decomposition from the organic fermentation treatment machine A snow melting system using a food residue or the like, which is composed of a heat supply pipe that heats and a snow melting device that is disposed and laid on a pedestrian road that melts snow accumulated by the heat of decomposition transmitted from the heat supply pipe. The snow melting system using a food residue or the like according to claim 1, 2 or 3, wherein the heat supply pipe is constituted by a heat pipe. 4. The snow melting system using food residue or the like according to claim 1, wherein the snow melting device is constituted by a heat medium circulation pipe composed of a closed loop of a large number or a plurality of rows.

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