KR101700707B1 - Food waste Recycling System and Method thereof - Google Patents

Abstract

The present invention relates to a system and method for recycling food waste, which can deodorize unpleasant smell of food waste through pressurized hydrothermal decomposition, and which can purify waste water through vacuum evaporation of moisture after separating waste oil and salt from the waste water. The system for recycling food waste comprises: a preheating storage tank in which food waste is accommodated, which performs preheating so that the food waste is heated to a preset temperature, and which stores the food waste; a pressure-resistant reactor which is connected to the preheating storage tank, which receives the food waste, on which the preheating has been performed, from the preheating storage tank, and in which pressurized hydrothermal decomposition of the food waste is performed; a steam boiler which is connected to the pressure-resistant reactor, and which provides saturated steam at a preset pressure into the pressure-resistant reactor; a vacuum evaporation device which is connected to the pressure-resistant reactor, which receives waste water from the pressure-resistant reactor, and which performs vacuum separation so that waste oil, salt, and moisture can be separated from the waste water; a number of steam filtering devices which are installed on the vacuum evaporation device, which receive steam generated via the vacuum evaporation device, and which filter the steam; a condensation device which is connected to the steam filtering devices, which receives pure steam obtained through the filtering of the steam filtering devices, and which condenses the pure steam into condensate water; and a condensate water aeration tank which is connected to the condensation device, which receives the condensate water from the condensation device, and which aerates the condensate water.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a food waste recycling system,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a food waste recycling system and method, and more particularly, to a system and method for recycling food waste, which comprises separating wastewater into waste oil and salt and decomposing the water by vacuum evaporation .

Food waste is a complex organic waste composed of various kinds of vegetables, meat, fish, salt, and waste oil. It is easy to decay and causes atmospheric, water quality and soil pollution due to odor and salt. Is emerging.

Table 1 is a table comparing three conventional technologies for recycling food wastes that have been commercialized at present.

Korean Patent No. 10-1501480 (Feb. 5, 2015) discloses a method for heating and drying food garbage by radiant heat through heat emission in a vacuum state, condensing and discharging vaporized gas to be sanitarily treated and recycled And a vacuum drying system for food waste which is mounted on a transportation vehicle in a compact structure and can be processed in real time in the collection process is described. A processing device in which a vacuum drying process is performed on the food waste being charged. A condensate separator for condensing the steam generated in the processing device and separating the condensed water and non-condensed water; A vacuum pump connected to the condenser separator through a vacuum pipe and discharging the non-condensable gas discharged from the condenser separator to the atmosphere; An automatic drainage device for discharging the condensed water separated in the condensate separator; And a vacuum backflow prevention device interposed between the condensate separator and the automatic drainage device to prevent reverse flow of the condensed water, wherein the treatment device comprises a vacuum drying tank; A heating element installed at an upper part of the vacuum drying tank and heating and drying the food waste through radiation heat emission in a vacuum sealed state; A facade edge sensor installed on the inner periphery of the vacuum drying tank for uniformly spreading the food waste introduced into the vacuum drying tank; And a vacuum rotating body for rotating the agitator at a constant speed, wherein the food waste is collected while moving on the vehicle, and at the same time, the collected food waste is dried. According to the disclosed technology, by using a vacuum, there is no need for external heat insulation and insulation, so heat generated from the heating element has a small loss, maximizes the effect of the use, and maximizes the efficiency without the radiation heat inhibiting substance . Vacuum-dried food waste is convenient for separating and crushing foreign matter, and there is no corruption or bad smell after the discharge, and it is sterilized to prevent contamination.

Korean Patent No. 10-1599424 (Feb. 25, 2016)) can dry food wastes, but they can be recycled by feeding, fertilizing, composting, and energizing. Wastewater generated during food waste treatment can be biogasized and recycled And drying and biogasification facilities of food waste which can be purified by discharged water conditions discharged through a sewage treatment plant. According to the anticipated technique, a weighing stand for weighing food waste brought in by the carrying-in vehicle of food waste; A food garbage storage tank for storing the loaded food garbage after metering through the metering basin; A crushing separator for picking up food waste from the food waste storage tank and crushing the food waste from the food waste; A contaminant box for storing contaminants selected through the crushing separator; A dehydrator for dehydrating the food waste having passed through the crushing separator to separate the food waste and the desorption liquid from the food waste; A drying and energizing unit for drying and treating foodstuffs passed through the dehydrator so as to be energy-recyclable; An intermediate storage for storing wastewater containing leachate generated in the food garbage storage tank, desorbing liquid generated in the dehydrator, and dry flue gas condensate generated in the drying and energizing unit; An oil separator for separating oil from the wastewater stored in the intermediate storage; An oil storage tank for temporarily storing and discharging the oil separated from the wastewater through the oil separator; A flow rate storage tank for storing wastewater separated from the oil through the oil separator; And a wastewater treatment and biogasification unit for wastewater treatment so that wastewater from the food waste stored in the flow storage tank can be discharged in connection with a wastewater treatment plant and biogasized to be recyclable; Wherein the drying and energizing unit comprises a dryer for drying the food through the dehydrator, a magnetic separator for selectively separating the metallic contaminants remaining in the dried food dried in the dryer, A vibrating screen for separating the remaining contaminants from the dried food through the vibrating screen, a dried material storage tank for storing and drying the dried food dried separated from the impurities through the vibrating screen, A drying flue gas condenser for condensing the dry flue gas collected in the dry flue gas dust collector and a dry flue gas condenser for condensing the dry flue gas condensed in the dry flue gas condenser, Blowing to be used as Wherein the wastewater treatment and biogasification unit comprises a methane fermentation tank for solubilizing suspended solids in wastewater using anaerobic methane bacteria for wastewater stored in the flow rate storage tank and for producing biogas through decomposition of organic matter, A first treated water tank for storing waste excess sludge in treated water in the methane fermentation tank and solid waste separated from the dissolved air flotation device and a settling tank, and a dehydration treatment using centrifugal force by receiving wastewater from the first treated water tank A desalination liquid storage tank for storing the desorbed liquid extracted through the centrifugal dehydrator and a desalination liquid storage tank for receiving the desalination liquid and homogenizing the flow rate and concentration of the desalination liquid, A buffer tank for a role and a buffer function, An anaerobic digestion tank for anaerobic treatment and biogas production using the anaerobic sludge for the coarse desalination liquid and the remaining organic matter decomposed in the methane fermentation tank and a float material remaining by using the levitation force of air against the desalted liquid passing through the anaerobic digestion tank A second treatment water tank for storing the desolvation solution in a state in which suspended solids are removed from the dissolved air floatation device, and a denitrification treatment in an oxygen-free state by receiving the desorbing solution from the second treatment water tank An anoxic tank for removing nitrogen through the anoxic tank, an aeration tank for removing organic matter using an aerobic microorganism for the desalination solution passed through the anoxic tank, a sedimentation tank for solid-liquid separation of aerobic microorganisms and treated water from the desalination solution passed through the aeration tank, For storing only the upper water and storing it A desulfurizer for receiving the biogas from the gas storage tank to remove sulfur components contained in the biogas, a desulfurizer for removing biogas from the methane fermentation tank and the anaerobic digestion tank, An anaerobic sludge tank for storing anaerobic sludge in the anaerobic digestion tank and for recycling the anaerobic sludge to maintain the concentration of microorganisms in the anaerobic digestion tank, After the wastewater stored in the flow rate storage tank is allowed to stay for 10 days, the floc type anaerobic methane bacteria are used to solubilize Suspended Solids (SS) in the wastewater, biogas is produced through organic decomposition, The storage tank may be connected to a gas combustor to supply biogas, The desulfurizer is connected to a boiler or a generator so as to be able to supply biogas from which a sulfur component has been removed so that it can be recycled as an energy source. The anaerobic digester is provided with a granular type anaerobic sludge, (TSS) contained in the treated water passing through the anaerobic digestion tank, the dissolved organic matter is anaerobically treated at an operating temperature of 30 to 35 DEG C and the residence time is set to 10 hours or less, 500 to 1000 ppm are removed by using the levitation force of the air dissolved in the wastewater and solid matter of suspended solids or waste excess sludge generated in the dissolved air floatator and the settling tank is sent to the first treated water tank for re- .

As shown in Table 1, the above-described conventional food garbage disposal apparatus not only requires a high cost for removing odors of food waste and treatment of waste water, but also lowers the efficiency of recovered energy compared to the supply energy, Has a disadvantage of falling.

Korean Patent No. 10-1501480 Korean Patent No. 10-1599424

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to solve the disadvantages of the conventional food waste recycling equipment as described above, The present invention also provides a system and method for recycling food wastes, which is implemented to purify only water by vacuum evaporation.

To solve these problems, according to one aspect of the present invention, there is provided a preheating storage tank for storing food waste and storing preheated preheated food at a preset temperature; A pressure-resistant reactor connected to the preheating reservoir and supplied with the preheated food waste in the preheating reservoir to pressurize and hydrolyze the food waste; A steam boiler connected to the pressure-resistant reactor for supplying saturated steam of predetermined pressure to the pressure-resistant reactor; A vacuum evaporator connected to the pressure-resistant reactor for receiving waste water discharged from the pressure-resistant reactor and vacuum-separating waste oil, salt and moisture; A plurality of steam filtration units installed on the upper portion of the vacuum evaporation unit and adapted to receive and filter the steam evaporated in the vacuum evaporation unit; A condensing device connected to the steam filtering device, for condensing the pure steam filtered by the steam filtering device to produce condensed water; And a condensed water aeration tank connected to the condensing device and adapted to receive condensation water from the condensing device and to aeration.

In one embodiment, the pressure-resistant reactor includes a pressure-resistant reaction body unit connected to the preheating reservoir, for receiving food waste preheated in the preheating reservoir and storing the preheated food waste in an internal space; A plurality of first agitators mounted on both sides of the lower portion of the pressure-resistant reaction basic body for stirring and crushing food waste; A second agitator mounted on an inner center of the pressure-resistant reaction basic body and rotating in a forward or reverse direction to stir the food waste; A solids discharge unit formed at a lower end of the pressure-resistant reaction base unit for discharging the dried solids from the pressure-resistant reaction base unit to the outside; A wastewater filtration unit installed at a lower end of the pressure-resistant reaction basic unit to separate wastewater from the dried solid matter in the pressure-resistant reaction basic unit; A steam jacket installed at a lower end of the pressure-resistant reaction basic body to receive saturated steam from the steam boiler and to introduce the saturated steam into the pressure-resistant reaction basic body; And a wastewater discharge unit formed at a lower portion of the steam jacket unit to discharge the wastewater filtered at the wastewater filtration unit to the vacuum evaporation apparatus.

In one embodiment, the first agitating portion includes a first agitating shaft member mounted on a lower side of the pressure-resistant reaction basic body to rotate, And a first stirring paddle member mounted on one side of the first stirring shaft member and rotating and stirring and crushing the food waste.

In one embodiment, the first stirring shaft member may be installed so as to be inclined by 45 ° in the vertical direction and 45 ° in the horizontal one side direction from the lower side of the pressure-resistant reaction basic body.

In one embodiment, the second agitating portion includes a second agitating shaft member mounted vertically on the inner central axis of the pressure-resistant reaction basic body portion and rotating in the forward or reverse direction; And a second stirring paddle member mounted on a lower portion of the second stirring shaft member and adapted to rotate and stir the food waste.

In one embodiment, the second stirring paddle member may be formed in an "S" shape.

In one embodiment, the vacuum evaporator includes a pressure tank connected to the pressure-resistant reactor and configured to form and maintain an internal space at a predetermined degree of vacuum; A wastewater jacket mounted on a lower portion of the pressure tank for receiving waste water from the pressure-resistant reactor; One or more wastewater injection units formed at a lower portion of the wastewater jacket unit to supply wastewater discharged from the pressure-resistant reactor to the wastewater jacket unit; A plurality of waste water spraying parts connected to the upper part of the inner space of the pressure tank part from the waste water jacket part and spraying the waste water injected into the waste water spray part into the inner space of the pressure tank part; A wastewater agitating part installed in an internal space of the pressure tank part and stirring the wastewater injected into the wastewater spray part by rotating in a forward or reverse direction; A plurality of steam discharging parts formed on the pressure tank part for discharging the steam evaporated in the pressure tank part; And a waste oil / salt discharge unit formed at a lower portion of the pressure tank unit for discharging waste oil and salt separated from the waste water.

In one embodiment, the steam filtering apparatus includes a steam filtering main body mounted on an upper portion of the vacuum evaporating apparatus and adapted to receive steam generated in the vacuum evaporating apparatus; A filter material filling part formed at a lower portion of the internal space of the steam filtering main part and filling the filter material to filter the steam transferred from the vacuum evaporator; And a steam filter unit formed on the upper portion of the internal space of the steam filtration main body, for filtering only pure steam from the steam filtered by the filter medium filling unit and discharging the pure steam to the condenser.

In one embodiment, the condensing device includes: a heat exchanger connected to the steam filtering device and formed of a finned tube type or plate type heat exchanger, for condensing the pure steam discharged from the steam filtering device into condensed water; And a condensate tank portion connected to the heat exchange portion and storing the condensed water condensed and discharged from the heat exchange portion.

According to another aspect of the present invention, there is provided a method for controlling food waste, comprising the steps of: storing food waste in a preheating reservoir; Supplying a saturated steam of a predetermined pressure to the pressure-resistant reactor in a steam boiler connected to the pressure-resistant reactor connected to the preheating storage tank; Hydrothermal decomposition and deodorization, pulverization, solid-liquid separation, drying of solid matter by high-temperature steam, stirring and discharging of solid matter by the saturated steam supplied from the steam boiler in the pressure-resistant reactor in the pressure-resistant reactor; A vacuum evaporation apparatus connected to the pressure-resistant reactor, wherein the waste water discharged from the pressure-resistant reactor is supplied to the vacuum evaporator to vacuum-separate waste oil, salt, and moisture; A plurality of steam filtration apparatuses installed at upper portions of the vacuum evaporation apparatus, respectively, for receiving and evaporating the vapor evaporated from the vacuum evaporation apparatus; A condensing device connected to the steam filtering device, the pure steam filtered from the steam filtering device to be condensed to be condensed; And a step of receiving the condensed water from the condensing device in a condensate aeration tank connected to the condensing device and aeration.

According to the present invention, it is possible to provide a system and method for recycling food wastes, which is realized by pressurizing hydrothermal decomposition of malodor of food wastes, separating wastewater into waste oil and salt, and then purifying only water by vacuum evaporation, And the wastewater purification process is continuously performed in a closed plant facility, it has an effect of reducing environmental pollution caused by odor and wastewater.

According to the present invention, the solid matter of the food garbage is separated from the wastewater in the pressure-resistant reactor and dried with high-temperature steam to discharge water with a water content of less than 10% and a salt concentration of less than 0.5% It is possible to improve another recycling method such as fuel conversion.

According to the present invention, the wastewater separated from the food waste is purified by vacuum evaporation of water only at a low temperature of 60 ° C, so that the purified water can be reused as the water of the steam boiler and the washing water of various facilities.

According to the present invention, pure water is evaporated at a low temperature of 60 ° C in the vacuum evaporation process of wastewater, thereby improving the energy efficiency compared to the conventional wastewater purification process.

1 is a view for explaining a system for recycling food wastes according to an embodiment of the present invention.
Fig. 2 is a view for explaining the pressure-resistant reactor shown in Fig. 1. Fig.
Fig. 3 is a view for explaining the first agitating part shown in Fig. 2;
Fig. 4 is a view for explaining the second agitating part in Fig. 2; Fig.
FIG. 5 is a view for explaining the vacuum evaporation apparatus shown in FIG. 1; FIG.
FIG. 6 is a view for explaining the steam filtering apparatus shown in FIG. 1; FIG.
7 is a view for explaining the condenser shown in Fig.
FIG. 8 is a flowchart illustrating a method of treating garbage according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. However, the description of the present invention is merely an example for structural or functional explanation, and the scope of the present invention should not be construed as being limited by the embodiments described in the text. That is, the embodiments are to be construed as being variously embodied and having various forms, so that the scope of the present invention should be understood to include equivalents capable of realizing technical ideas. Also, the purpose or effect of the present invention should not be construed as limiting the scope of the present invention, since it does not mean that a specific embodiment should include all or only such effect.

Meanwhile, the meaning of the terms described in the present invention should be understood as follows.

The terms "first "," second ", and the like are intended to distinguish one element from another, and the scope of the right should not be limited by these terms. For example, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

It is to be understood that when an element is referred to as being "connected" to another element, it may be directly connected to the other element, but there may be other elements in between. On the other hand, when an element is referred to as being "directly connected" to another element, it should be understood that there are no other elements in between. On the other hand, other expressions that describe the relationship between components, such as "between" and "between" or "neighboring to" and "directly adjacent to" should be interpreted as well.

It should be understood that the singular " include "or" have "are to be construed as including a stated feature, number, step, operation, component, It is to be understood that the combination is intended to specify that it does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used predefined terms should be interpreted to be consistent with the meanings in the context of the related art and can not be interpreted as having ideal or overly formal meaning unless explicitly defined in the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A system and method for recycling food waste according to an embodiment of the present invention will now be described in detail with reference to the drawings.

1 is a view for explaining a system for recycling food wastes according to an embodiment of the present invention.

1, the food waste recycling system includes a preheating storage tank 100, an internal pressure reactor 200, a steam boiler 300, a vacuum evaporator 400, a plurality of steam filtration units 500, a condenser 600 And a condensate aeration tank 700.

The preheating storage tank 100 is connected to the pressure-resistant reactor 200, receives food waste, preheats the preheated food to a preset temperature, and stores the preheated food.

In one embodiment, the reason for preheating in preheater reservoir 100 is as follows. In the case of winter, that is, when the ambient temperature falls below 0 ° C, there is a difference in the amount of condensed water generated (compared with the summer when the ambient temperature is normal) This is due to the ineffective problem of inserting a capacity of 30% smaller than that of summer.

In one embodiment, the preheating reservoir 100 allows the contained food waste to be preheated to 70 ° C to 90 ° C, preferably to 80 ° C.

The pressure-resistant reactor 200 is connected to the preheating storage tank 100 and supplies the preheated food waste in the preheating storage tank 100 to pressurize and hydrolyze the food waste.

The steam boiler 300 is connected to the pressure-resistant reactor 200 and supplies saturated steam of a predetermined pressure to the pressure-resistant reactor 200.

In one embodiment, the steam boiler 300 may supply saturated steam at a pressure of 10 to 20 atmospheres of 180 to 230 캜 to the pressure reactor 200. At this time, it is appropriate that the pressure is preferably 15 atm and the temperature is 200 ° C.

The vacuum evaporation apparatus 400 is connected to the pressure-resistant reactor 200, receives wastewater discharged from the pressure-resistant reactor 200, and separates waste oil, salt and moisture from the supplied wastewater by vacuum.

The steam filtration unit 500 is mounted on the upper portion of the vacuum evaporation unit 400 and receives and evaporates the vapor that is evaporated in the vacuum evaporation unit 400.

The condensing device 600 is connected to the steam filtering device 500 and receives pure steam filtered by the steam filtering device 500 to condense it into condensed water.

The condensate aeration tank 700 is connected to the condenser 600 and receives condensed water from the condenser 600 to aeration.

The food waste recycling system having the above-described configuration may further include a vacuum system 800.

The vacuum system 800 is connected to the condenser 600 and forms a vacuum pressure for separating waste oil, salt and moisture from the vacuum evaporator 400.

In one embodiment, the vacuum system 800 is capable of forming a vacuum pressure of 10 to 25 torr, preferably a vacuum pressure of 10 torr or less.

In one embodiment, the vacuum system 800 may include a water ejector, a water-based vacuum pump, a vacuum tank, a feed pump, a feed tank, and a drain water purifier (not shown in the drawings for convenience of explanation).

)로 워터 이젝터에 물을 공급하며, 3) 응축장치(600)로부터 배출되는 비응축 가스를 워터 이젝터를 통해 정화하여 수봉식 진공펌프로 이송하며, 4) 수봉식 진공펌프로부터 배출되는 오염수를 배출수정화장치를 통해 정화처리하여 재사용하도록 할 수 있다.In one embodiment, the vacuum system 800 is configured to: 1) operate a water-sealed vacuum pump to maintain the vacuum degree of the vacuum tank below 10 torr; 2)

3) The noncondensable gas discharged from the condenser 600 is purified through a water ejector and transferred to a vacuum-type vacuum pump. 4) The waste water discharged from the vacuum-type vacuum pump is purified It can be purified and treated for reuse through the apparatus.

The generation of food waste is classified into 'public sector' and 'workplace sector' according to the 'Waste Management Act'. In the process of recycling food waste generated in the 'public sector', recycling of food waste having the above- The system can be installed from the back end process of the crushing / sorting process and can be put into the process immediately without the crushing / sorting process in the process of recycling the food waste from the 'workplace sector'.

The present invention relates to a system for decomposing and decomposing a malodor of a food garbage by pressurizing and hydrolyzing and decomposing waste water by vacuum evaporation of only water separated from waste oil and salt, (200 ° C) to decompose the odor-inducing substances contained in the food waste by decomposing them to remove the odor, separate the solid matter of the food waste and the waste water, and the waste water is evaporated only at a vacuum pressure of 10 torr , It is condensed and purified, and the solids can be dried with steam at 200 ° C.

The food waste recycling system having the above-described structure is configured to remove the odors of the food waste in the pressure-resistant reactor 200 (deodorization process), pulverize the solid matter of the food waste (pulverization process) (Solid-liquid separation step) through the wastewater filtration unit 250, which will be described later, and the wastewater is sprayed, evaporated, steam filtered, condensed, and the condensed water is purified in the vacuum evaporation apparatus 400, It is possible to prevent the waste water treatment cost and the secondary environmental pollution and to prevent the solid matter of the food waste remaining in the pressure-resistant reactor 200 from being converted into a biomass capable of being converted into a fuel having a water content of less than 10% and a salt concentration of 0.5% Can be processed.

In the food waste recycling system having the above-described structure, when conventional food or composting companies recycle the food waste, the food waste is crushed / squeezed to separate the wastewater and the solid matter, and the waste water is separated into a centrifuge such as a decanter Unlike waste oil and wastewater which are separated from waste wastewater and separated wastewater is transported to landfill or sewage end treatment plant at a high cost, waste water purification and wastewater purification process are continuously carried out in a closed plant facility when food wastes are recycled Thereby improving the efficiency and economical efficiency of the recycling process and saving expensive deodorizing equipment operation costs and wastewater transportation / disposal costs that conventional feed or composting companies have to bear.

As shown in Table 2, the food waste recycling system having the above-described configuration can provide enhanced functions compared to existing facilities.

Fig. 2 is a view for explaining the pressure-resistant reactor shown in Fig. 1. Fig.

Referring to FIG. 2, the pressure-resistant reactor 200 includes an internal pressure reaction unit 210, a plurality of first agitators 220, a second agitator 230, a solids discharge unit 240, 250, a steam jacket portion 260, and a waste water discharge portion 270.

The pressure-resistant reaction basic body part 210 is connected to the preheating storage tank 100. The pressure-responsive basic body part 210 is installed on both sides of the lower part, the second agitating part 230 is installed and installed in the inner center part, A solid waste discharging part 240 is formed at one side and a waste water filtration part 250 is installed at an inner lower side and a steam jacket part 250 is attached to a lower end (more specifically, a lower part of the waste water filtration part 250 is installed and installed) And the preheated storage tank 100 receives the preheated food waste and receives the food waste.

The first agitating part 220 is mounted on both sides of the lower part of the pressure-resistant reaction basic body part 210 to stir food waste at a high speed to grind the food waste and generate strong vortex.

The second agitating part 230 is mounted on the inner center of the pressure-resistant reaction basic body part 210 and rotates in the forward or reverse direction to stir the food waste.

In one embodiment, the second agitator 230 is configured to move the food waste toward the central axis (i.e., the second agitating shaft member 231, described later) when it rotates in the forward direction (for example, clockwise) (For example, the second stirring shaft member 231 to be described later) by rotating the food waste in the reverse direction (for example, rotating counterclockwise) ) To discharge the dried solid matter to the outside.

The solids discharge unit 240 is formed at the lower end of the pressure-resistant reaction basic body unit 210 and discharges the solid matter deodorized and agitated from the pressure-resistant reaction basic body unit 210 to the outside.

In one embodiment, the solids discharge portion 240 is connected to the solenoid discharge portion 240 from the center axis of the pressure-resistant reaction prime mover 210 (that is, a second stirring shaft member 231 described later) by the reverse rotation of the second stirring portion 230 The solid material can be discharged to the outside by providing the discharge passage to the deodorized and dried solid material pushed in the moving direction.

The wastewater filtration unit 250 is installed at the lower end of the pressure-resistant reaction basic body unit 210 and separates and filters the condensed water and the wastewater generated from the hydrothermal decomposition in the pressure-resistant reaction basic body unit 210 from the solid matter.

The steam jacket unit 260 is installed at the lower end of the pressure-resistant reaction basic body unit 210 and receives the saturated steam from the steam boiler 300 and inputs it to the pressure-resistant reaction basic body unit 210.

The wastewater discharge unit 270 is formed below the steam jacket unit 260 and discharges the wastewater filtered by the wastewater filtration unit 250 to the vacuum evaporation apparatus 400.

The pressure-resistant reactor 200 having the above-described structure may further include a vapor jacket input unit 280 and a steam pressure reactor input unit 290.

The steam jacket input unit 280 is connected to the steam boiler 300 and receives the saturated steam from the steam boiler 300 and transfers the saturated steam to the steam jacket unit 260.

The steam pressure reactor unit inlet 290 is connected to the lower space of the waste water filtration unit 250 from the steam jacket unit 260. The saturated steam transferred to the steam jacket unit 260 is supplied to the pressure- .

The pressure-resistant reactor 200 having the above-described structure receives steam from the steam boiler 300 and decomposes ammonia, hydrogen sulfide, methyl mercaptan, and trimethylamine, which are malodorous substances of the food waste, (Dehydrating process) of the food waste by pulverizing (pulverizing) the fiber tissue of the food waste by the high-speed agitation of the first agitating part 220, The fiber structure and moisture can be separated and discharged (solid-liquid separation process), and the fibrous tissue can be dried (dried) with high-temperature steam.

, 증기온도 200℃의 증기를 내압반응기본체부(210)의 하단부에 장착 설치된 증기재킷부(260)로 투입시키며, 3) 증기재킷부(260)를 통과한 증기는 내압반응기본체부(210)의 내측 하단부에 설치된 폐수여과부(250)의 하부로 투입되어 설정 압력을 형성하며(가압 열수분해), 4) 내압반응기본체부(210)의 증기압이 15

가 유지되면 증기 투입을 중지하고, 10분의 시간이 경화한 후 내압반응기본체부(210)의 하단부 측면에 설치되어 있는 제1교반부(220)를 작동시키며(분쇄과정), 5) 제1교반부(220)의 작동 20분 경과 후 내압반응기본체부(210)의 중심축에 수직으로 설치되어 있는 제2교반부(230)를 작동시키며, 6) 제2교반부(230)의 작동과 동시에 폐수배출부(270)를 개방하고, 폐수여과부(250)를 통과한 폐수를 내압반응기본체부(210)의 증기압에 의해 진공증발장치(400)로 배출시키며(고액분리과정), 7) 내압반응기본체부(210) 내에 잔류되어 있는 고형물은 내압반응기본체부(210)에 잔존하는 고온의 증기에 의해 건조되고, 내압반응기본체부(210)의 제2교반부(230)의 "S"자형 패들(후술할 제2교반패들부재(232))에 의해 배출되어 별도로 설치된 호퍼에 저장될 수 있다.The pressure-resistant reactor 200 having the above-described configuration is provided with: 1) feeding food waste to a volume of about 1/2 of the volume of the pressure-resistant reaction basic body unit 210 (100% of condensed water is generated); 2) Vapor pressure 15

And the steam having a steam temperature of 200 ° C is introduced into the steam jacket portion 260 installed at the lower end of the pressure resistant reaction basic body portion 210. The steam having passed through the steam jacket portion 260 is introduced into the pressure- (Pressurized hydrothermal decomposition), 4) the vapor pressure of the pressure-resistant reaction basic body part 210 is 15

The pulverization process is performed by operating the first agitating part 220 provided on the lower end side of the pressure-resistant reaction basic body part 210 after the curing time of 10 minutes, and 5) After 20 minutes of operation of the agitation part 220, the second agitation part 230 installed perpendicularly to the central axis of the pressure-resistant reaction basic body part 210 is operated, and 6) the operation of the second agitation part 230 At the same time, the wastewater discharge unit 270 is opened, the wastewater that has passed through the wastewater filtration unit 250 is discharged to the vacuum evaporation apparatus 400 (solid-liquid separation process) by the vapor pressure of the pressure-resistant reaction basic body unit 210, The solid matter remaining in the pressure-resistant reaction basic body part 210 is dried by the high-temperature steam remaining in the pressure-resistant reaction basic body part 210, and the "S" of the second agitating part 230 of the pressure- Shaped paddle (second stirring paddle member 232 to be described later) and stored in a separately installed hopper.

, 증기온도 200℃의 가압 열수분해)을 거친 후 저분자 물질(포도당, 아미노산, 지방산 및 악취유발물질 분해)로 분해될 수 있다.In the case of pressurized hydrothermal decomposition (pretreatment) by the pressure-resistant reactor 200 having the above-described structure, decomposition of a middle molecular substance into a low molecular substance under high temperature / high pressure (an anthropic chemical reaction- (Hydrocarbons, proteins, fats and odor-inducing substances) are subjected to an artificial chemical reaction (vapor pressure 15

, Steam hydrothermal decomposition at a steam temperature of 200 ° C), and then decomposed into low-molecular substances (glucose, amino acid, fatty acid and odor-inducing substance decomposition).

Fig. 3 is a view for explaining the first agitating part shown in Fig. 2;

Referring to FIG. 3, the first agitating portion 220 includes a first agitating shaft member 221 and a first agitating paddle member 222.

The first stirring shaft member 221 is mounted on the lower side of the pressure-resistant reaction basic body 210 and rotates.

In one embodiment, the first stirring shaft member 221 may be mounted so as to be inclined at 45 degrees in the vertical direction 45 and one side in the horizontal direction at the lower side of the pressure-resistant reaction basic body 210. Therefore, the food waste received in the pressure-resistant reaction basic body part 210 rotates clockwise and 45 degrees upward and downward along the inner wall surface of the pressure-resistant reaction basic body part 210, The garbage can be stirred and crushed.

The first stirring paddle member 222 is mounted on one side of the first stirring shaft member 221 and rotates to stir and crush the food garbage.

In one embodiment, the first agitating paddle member 222 may be formed in the form of a propeller.

The first agitating portion 220 having the above-described structure can rotate at a higher speed than the second agitating portion 230, so that the food waste accommodated in the pressure-resistant reaction basic body portion 210 can be agitated at a high speed.

Fig. 4 is a view for explaining the second agitating part in Fig. 2; Fig.

Referring to FIG. 4, the second stirring portion 230 includes a second stirring shaft member 231 and a second stirring paddle member 232.

The second stirring shaft member 231 is installed vertically on the inner central axis of the pressure-resistant reaction basic body part 210 and rotates in the forward direction or the reverse direction.

The second stirring paddle member 232 is mounted on the lower portion of the second stirring shaft member 231 and rotates to stir the food waste.

In one embodiment, the second agitation paddle member 232 may be formed in an "S" shape.

In one embodiment, the second stirring paddle member 232 has a center axis (that is, a second stirring shaft member 231 described later) when the food waste is rotated in the forward direction (for example, clockwise) (For example, the second stirring shaft member 231 to be described later) when the food waste is rotated in the reverse direction (for example, in the counterclockwise direction) So that the solids can be discharged to the outside.

The second agitating portion 230 having the above-described structure is rotated at a lower speed than the first agitating portion 220 so as to move the food waste toward the center axis (that is, a second stirring shaft member 231 described later) (For example, the second stirring shaft member 231 to be described later) by rotating the food waste in the reverse direction (for example, rotating counterclockwise) The solid matter can be discharged to the outside.

FIG. 5 is a view for explaining the vacuum evaporation apparatus shown in FIG. 1; FIG.

5, the vacuum evaporation apparatus 400 includes a pressure tank unit 410, a waste water jacket unit 420, one or more wastewater inlet units 430, a plurality of wastewater spray units 440, A plurality of steam discharging units 460, and a waste oil /

The pressure tank unit 410 is connected to the pressure-resistant reactor 200 and forms and maintains the internal space at a predetermined degree of vacuum.

In one embodiment, it is appropriate that the pressure tank portion 410 is formed and maintained at a pressure of 10 torr to 25 torr, preferably 10 torr or less.

The waste water jacket portion 420 is installed at the lower portion of the pressure tank portion 410 and receives waste water from the waste water inlet portion 430.

The wastewater inlet 430 is formed at a lower portion of the wastewater jacket 420 and feeds wastewater discharged from the pressure-resistant reactor 200 to the wastewater jacket 420.

The wastewater spray unit 440 is connected to the upper portion of the inner space of the pressure tank unit 410 from the wastewater jacket unit 420. The wastewater sprayed into the wastewater jacket unit 420 flows into the inner space of the pressure tank unit 410 .

The wastewater agitating unit 450 is installed in the internal space of the pressure tank unit 410 and rotates in the forward or reverse direction to agitate the wastewater fed into the pressure tank unit 410.

The steam discharging part 460 is formed on the upper part of the pressure tank part 410 and discharges the vapor which is evaporated in the pressure tank part 410.

The waste oil / salt discharge portion 470 is formed at the lower portion of the pressure tank portion 410 and discharges waste oil and salt separated from the waste water.

The vacuum evaporation apparatus 400 having the above-described structure can separate the salt and the waste oil contained in the wastewater from moisture.

The vacuum evaporation apparatus 400 having the above-described structure is configured so that 1) the vacuum degree of the pressure tank unit 410 is formed and maintained at 10 torr or less, 2) the waste water discharged from the pressure- 420), and 3) the waste water having passed through the waste water jacket portion 420 can be sprayed into the pressure tank portion 410 through the waste water spray portion 440. At this time, it is preferable that the pressure tank portion 410 receives high-temperature (200 ° C) heat retained by the wastewater in the wastewater jacket portion 420 to maintain the heat insulation by the self-heating for efficiency of operation.

FIG. 6 is a view for explaining the steam filtering apparatus shown in FIG. 1; FIG.

Referring to FIG. 6, the steam filtering apparatus 500 includes a steam filtering main body 510, a filter medium filling part 520, and a steam filter part 530.

The steam filtration main body 510 is mounted on the upper portion of the vacuum evaporator 400 (more specifically, connected to the upper portion of the steam discharge portion 460), and the filter medium filling portion 520 A steam filter unit 530 is formed on the upper part of the inner space, and the steam evaporated in the vacuum evaporator 400 is received.

The filter medium filling part 520 is formed in the lower part of the inner space of the steam filtering main part 510 and fills the filtering medium to filter the steam which is evaporated from the vacuum evaporator 400.

The steam filter unit 530 is formed on the upper portion of the internal space of the steam filtration main body 510 and filters pure steam only from the steam filtered in the filter medium filling unit 520 and discharges it to the condenser 600.

The steam filtration apparatus 500 having the above-described structure can separate a trace amount of salt contained in the vapor evaporated from the vacuum evaporation apparatus 400 from the waste oil.

The steam filtration apparatus 500 having the above-described structure is configured such that: 1) the vapor that is evaporated from the vacuum evaporation apparatus 400 is first filtered through the filter medium filling unit 520, and 2) Only the pure steam can be discharged to the condenser 600 by passing through the steam filter unit 530.

7 is a view for explaining the condenser shown in Fig.

Referring to FIG. 7, the condenser 600 includes a heat exchanger 610 and a condensate tank 620.

The heat exchange unit 610 is connected to the steam filtering apparatus 500 and may be formed of a 'pin / tube type' or a 'plate type' heat exchanger. The purified steam is supplied from the steam filtering apparatus 500 and is converted into condensed water .

The condensate water tank unit 620 is installed in the heat exchange unit 610 and temporarily stores the condensed water condensed in the heat exchange unit 610 to be transferred to the condensate aeration tank 700.

The condensing apparatus 600 having the above-described configuration can condense the filtered vapor discharged from the vapor filtering apparatus 500.

FIG. 8 is a flowchart illustrating a method of treating garbage according to another embodiment of the present invention.

Referring to FIG. 8, after the food waste is received in the preheating storage tank 100, it is preheated to a predetermined temperature and stored (S810).

The saturated steam of a predetermined pressure is supplied from the steam boiler 300 connected to the pressure-resistant reactor 200 connected to the preheating storage tank 100 to the pressure-resistant reactor 200 at step S820.

In the pressure-resistant reactor 200 connected to the preheating storage tank 100, the preheated food waste in the preheating storage tank 100 is received and subjected to hydrothermal decomposition at step S830.

In the vacuum evaporator 400 connected to the pressure-resistant reactor 200, wastewater discharged from the pressure-resistant reactor 200 is supplied to the vacuum evaporator 400, and waste oil, salt and moisture are separated by vacuum in operation S840.

In operation S850, the steam generated in the vacuum evaporation apparatus 400 is filtered by the plurality of steam filtration apparatuses 500 mounted on the upper portion of the vacuum evaporation apparatus 400.

In the condensing device 600 connected to the steam filtering device 500, pure steam filtered in the steam filtering device 500 is received and condensed into condensed water (S860).

The condensed water is supplied to the condenser 600 through the condenser aeration tank 700 connected to the condenser 600 (S870).

The embodiments of the present invention are not limited to the above-described apparatuses and / or methods, but may be implemented by a program for realizing functions corresponding to the configuration of the embodiment of the present invention, a recording medium on which the program is recorded, And such an embodiment can be easily implemented by those skilled in the art from the description of the embodiments described above.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It belongs to the scope of right.

100: Preheating storage tank
200: pressure-resistant reactor
210: internal pressure reaction basic body part
220: First agitating part
221: first stirring shaft member
222: first stirring paddle member
230: Second agitating part
231: second stirring shaft member
232: second stirring paddle member
240:
250: Wastewater filtration unit
260: Steam jacket part
270:
280: Steam jacket input part
290: Steam pressure reactor input part
300: Steam boiler
400: Vacuum evaporator
410: pressure tank portion
420: waste water jacket part
430: Wastewater input unit
440: Waste water spraying part
450: wastewater agitation section
460:
470: waste oil / saline discharge part
500: steam filtration device
510: steam filtration body portion
520:
530: steam filter section
600: condenser 610: heat exchanger
620: Condensate tank part
700: Condensate aeration tank
800: Vacuum system

Claims (10)

A preheating reservoir for storing food waste and storing the preheated food at a preset temperature;
A pressure-resistant reactor connected to the preheating reservoir and supplied with the preheated food waste in the preheating reservoir to pressurize and hydrolyze the food waste;
A steam boiler connected to the pressure-resistant reactor for supplying saturated steam of predetermined pressure to the pressure-resistant reactor;
A vacuum evaporator connected to the pressure-resistant reactor for receiving waste water discharged from the pressure-resistant reactor and vacuum-separating waste oil, salt and moisture;
A plurality of steam filtration units installed on the upper portion of the vacuum evaporation unit and adapted to receive and filter the steam evaporated in the vacuum evaporation unit;
A condensing device connected to the steam filtering device, for condensing the pure steam filtered by the steam filtering device to produce condensed water; And
And a condensed water aeration tank connected to the condensing device for receiving condensed water from the condensing device and aeration,
The pressure-resistant reactor is connected to the pre-heating storage tank, and includes an internal pressure reaction basic unit for receiving the food waste preheated in the preheating storage tank and storing the food waste in the internal space; A plurality of first agitators mounted on both sides of the lower portion of the pressure-resistant reaction basic body for stirring and crushing food waste; A second agitator mounted on an inner center of the pressure-resistant reaction basic body and rotating in a forward or reverse direction to stir the food waste; A solids discharge unit formed at a lower end of the pressure-resistant reaction base unit for discharging the dried solids from the pressure-resistant reaction base unit to the outside; A wastewater filtration unit installed at a lower end of the pressure-resistant reaction basic unit to separate wastewater from the dried solid matter in the pressure-resistant reaction basic unit; A steam jacket installed at a lower end of the pressure-resistant reaction basic body to receive saturated steam from the steam boiler and to introduce the saturated steam into the pressure-resistant reaction basic body; And a waste water discharge unit formed at a lower portion of the steam jacket unit and discharging the waste water filtered by the waste water filtration unit to the vacuum evaporation apparatus,
Wherein the first agitating portion includes: a first agitating shaft member mounted on a lower side of the pressure-resistant reaction basic body to rotate; And a first stirring paddle member mounted on one side of the first stirring shaft member and rotating and stirring and crushing the food waste,
Wherein the first stirring shaft member is installed so as to be inclined by 45 占 in the vertical direction and 45 占 in the horizontal direction from one side of the lower portion of the pressure-resistant reaction basic body.
delete delete delete 2. The agitator according to claim 1,
A second agitating shaft member mounted vertically on an inner central axis of the pressure-resistant reaction basic body and rotating forward or backward; And
And a second stirring paddle member mounted on a lower portion of the second stirring shaft member and rotating to stir the food waste.
6. The method of claim 5, wherein the second stirring paddle member
And is formed in an "S" shape.
The vacuum evaporation apparatus according to claim 1,
A pressure tank connected to the pressure-resistant reactor for forming and maintaining an internal space at a predetermined degree of vacuum;
A wastewater jacket mounted on a lower portion of the pressure tank for receiving waste water from the pressure-resistant reactor;
One or more wastewater injection units formed at a lower portion of the wastewater jacket unit to supply wastewater discharged from the pressure-resistant reactor to the wastewater jacket unit;
A plurality of wastewater spray portions connected to the upper portion of the inner space of the pressure tank portion from the wastewater jacket portion and spraying the wastewater into the wastewater jacket portion into the inner space of the pressure tank portion;
A wastewater agitating part installed in an internal space of the pressure tank part and stirring the wastewater injected into the wastewater spray part by rotating in a forward or reverse direction;
A plurality of steam discharging parts formed on the pressure tank part for discharging the steam evaporated in the pressure tank part; And
And a waste oil / salt discharge unit formed at a lower portion of the pressure tank unit for discharging waste oil and salt discharged from the waste water.
The steam filtration system according to claim 1,
A steam filtration main body installed on an upper portion of the vacuum evaporator and adapted to receive steam generated in the vacuum evaporator;
A filter material filling part formed at a lower portion of the internal space of the steam filtering main part and filling the filter material to filter the steam transferred from the vacuum evaporator; And
And a steam filter unit formed on an upper portion of the internal space of the steam filtration main body and configured to filter pure steam only from the steam filtered in the filter medium filling unit and discharge it to the condenser.
2. The apparatus according to claim 1,
A heat exchanger connected to the steam filtering device and formed of a fin tube type or plate type heat exchanger for condensing the pure steam discharged from the steam filtering device into condensed water; And
And a condensed water tank portion connected to the heat exchange portion and storing condensed water condensed and discharged from the heat exchange portion.
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