KR20110005021A - Recycling mechanism of organic system wastes by subcritical point water and supersonic emission - Google Patents

Abstract

PURPOSE: An organic waste recycling machine using subcritical water and the ultrasonic wave radiation is provided to improve the stirring efficiency by the stirring effect through generating bubbles, and to enhance the decomposition efficiency of organic waste. CONSTITUTION: An organic waste recycling machine comprises the following: a sealed hydrolysis reactor(10) formed in a sphere shape; an ultrasonic wave stirring unit(20) stirring subcritical water inside the hydrolysis reactor with ultrasonic waves; the subcritical water generator(30) supplying the subcritical water into the hydrolysis reactor through a condensed water supplying pipe; and a residue collecting unit collecting residues discharged from the hydrolysis reactor.

Description

Recycling mechanism of organic system wastes by subcritical point water and supersonic emission

The present invention relates to an organic waste recycling mechanism by ultrasonic radiation in the ejection state of subcritical water, and induces a rapid increase in hydrolysis reaction and solubility of subcritical water by the stirring effect of ultrasonic waves radiated by an ultrasonic vibrator installed therein. The present invention relates to a non-degradable organic waste recycling mechanism by subcritical water and ultrasonic radiation, which harmlessly treats organic waste in a short time.

Incineration, landfill, microbial decomposition, etc. have been used as a bulk treatment method of organic wastes, but the incineration requires vast facilities and energy, and harmful air pollutants (dioxin, CO2, NOx, SOx) during combustion. Etc.), which causes air pollution, and the landfill treatment method requires the contamination of groundwater or soil by leachate and continuous landfill securing, and in the case of microbial decomposition, it takes a long time to decompose. There was a problem that odor is generated.

In order to solve such a problem, there is a decomposition treatment method using supercritical water, but this supercritical water treatment method has a problem of enormous facility cost burden and energy consumption.

In addition, due to the problems of the supercritical water treatment method as described above, there is a non-degradable organic waste treatment apparatus using subcritical water, such as Patent Registration No. 0820169, Patent Registration No. 082179, etc., but non-degradable organic waste using subcritical water The treatment device may cause a phenomenon in which subcritical water forms a dissolution film to decompose the waste to hinder the decomposition of the waste, and a stirring device is further installed therein to remove the phenomenon and promote dissolution.

However, the non-degradable organic waste treatment apparatus using subcritical water is an ultra-precision machinery in which the subcritical water is ejected into the container while maintaining a closed state (high pressure), and the stirrer is further installed in the ultra-precision machinery. In this case, there is a problem that the structure is complicated, the abnormality occurs in the airtight (sealed) state and the performance may be reduced.

In addition, since the stirrer installed in the hardly decomposable organic waste treatment apparatus is also an ultra-precision machine, there are many difficulties in designing such a stirrer, and there is a problem that the manufacturing cost is increased and the economic power is lowered.

In addition, the conventional stirrer is dependent on mechanical stirring by a screw or blade, there is a problem that the removal efficiency of the molten film formed on the decomposition object is lowered, thereby lowering the decomposition performance of the entire apparatus.

The present invention is to solve the above object, the object is to remove the dissolved film surrounding the decomposition object through the induction of cavitation phenomenon by the ultrasonic vibrator to improve the decomposition and diffusion force, and to treat the non-degradable organic waste harmlessly It is to provide an organic waste recycling mechanism by ultrasonic radiation in the ejection of subcritical water.

Another object of the present invention is to form a hydrolysis reactor in a spherical shape, and to form a radially rounded radial surface inside the hydrolysis reactor, to suppress the formation of standing waves generated during the energy radiation by the ultrasonic vibrator and thereby uniform cavitation It is to provide an organic waste recycling mechanism by ultrasonic radiation in the ejection state of subcritical water that can have a dispersing effect.

It is still another object of the present invention to provide an organic waste recycling mechanism by subcritical water and ultrasonic radiation, which causes the cavitation phenomenon by the ultrasonic frequency in the range of 20 to 30 kHz, so as to have an efficient physicochemical action under the subcritical water.

Another object of the present invention is to operate the plurality of ultrasonic vibrators by free combination to form the optimum conditions of hydrolysis of subcritical water, through which the hydrolysis reaction can be completed in a short time to decompose the decomposition object To provide an organic waste recycling mechanism by counting and ultrasonic radiation.

Still another object of the present invention is to provide an organic waste recycling mechanism by subcritical water and ultrasonic radiation, which can install a residue collection unit under the hydrolysis reactor to facilitate the treatment of residues resulting from hydrolysis. .

The present invention is a spherical closed hydrolysis reactor; An ultrasonic stirring unit which is installed in the hydrolysis reactor and ultrasonically stirs the subcritical water in the hydrolysis reactor; A subcritical water generating unit connected to the hydrolysis reactor and the condensed water supply pipe and supplying the generated subcritical water into the hydrolysis reactor through the condensed water supply pipe; It is installed to be located under the hydrolysis reactor to include a residue collection unit for storing the residue discharged from the hydrolysis reactor.

The ultrasonic stirring unit is an ultrasonic vibrator installed in the hydrolysis reactor; An ultrasonic oscillator connected to the ultrasonic vibrator to vibrate the ultrasonic vibrator by an electric signal; It is configured to include an oscillator switching controller that is connected to the ultrasonic vibrator and the ultrasonic oscillator to control the ultrasonic waves.

In this way, the present invention is to remove the dissolved film formed on the decomposition object by the subcritical water by the ultrasonic stirring unit, to improve the stirring efficiency (promoting dissolution by the stirring effect through bubble generation), thereby improving the decomposition efficiency. have.

In addition, the present invention is to cause the stirring phenomenon by the ultrasonic wave, to further improve the sealability of the hydrolysis reactor according to the installation of the mechanical stirrer, not only to simplify the structure, but also to increase the ease of design, domestic Commercialization can be made possible.

In addition, the present invention by forming a radial surface inside the hydrolysis reactor in a circular shape, it is possible to suppress the generation of standing waves by the energy emitting surface and thereby to improve the hydrolysis reaction efficiency according to the stirring of the ultrasonic wave.

In addition, the present invention causes the ultrasonic stirrer to cause the cavitation phenomenon according to the ultrasonic frequency output of 20 ~ 30 kHz, not only the impact energy due to the generation and disappearance of micro bubbles, but also accompanied by the stirring effect and thermal action by the radial pressure of the ultrasonic wave itself As a result, the physicochemical action can be performed smoothly in the subcritical water state.

In addition, the present invention is designed to harmlessly decompose organic-degradable organic wastes using subcritical water generated in the subcritical region, so that all wastes except metal, pomegranate and glass can be decomposed, thereby protecting the global environment. There are so many effects.

The water boils at 99.09 ℃ in the state of 1 atm, but when the air pressure increases, the boiling point of the water rises. In hydrodynamics, liquid and gas are usually expressed as fluids, and materials are solid and liquid according to three-phase theory. Exists in the form of a gas. When the fluid reaches an ambiguous state of liquid and gas, this point is called a critical point, which means a temperature of 374 ° C. and a state of 22.1 MPa. Fluids that exceed these critical points are called super critical point water, and in this state, density, dielectric constant, ionic solubility, and degradability, which are unthinkable at normal temperature and pressure, are greatly increased. Organic waste that is difficult to decompose also has a property of decomposing in a short time. On the contrary, the fluid in the region below this critical point is called subcritical point water, and by using the property of subcritical water, the molecules of organic matter such as starch and protein are decomposed into glucose and amino acid by subcritical water reaction. As it becomes lower molecular weight, the solid (solid) becomes liquid.

The above subcritical water can decompose environmental pollutants and can be treated harmlessly. Subcritical water can dissolve organic substances and strong hydrolysis. In the subcritical water state, the power conversion value is about 20 to 30, which is closer to the methanol used to dissolve the oil, thereby increasing the oil dissolving property.

In addition, when the temperature range of the subcritical water is about 250 ° C., since water has very large ions and is separated into hydrogen ions and hydroxide ions, it has a strong decomposition force. The hydrolysis reaction in the subcritical water state allows water to be recycled in an environmentally and safe manner because water is used without chemicals such as organic solvents.

The present invention utilizes the characteristics of the subcritical water as described above, and dissolves by ultrasonic vibrator using chemically very stable and stable polymer chloride compounds (PCBs) and hardly decomposable organic wastes using saturated steam generated in the subcritical region. Accelerated hydrolysis without harming air pollutants in as fast as 20 to 30 minutes.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is an exemplary view showing a configuration according to the present invention, Figure 2 is an exemplary view showing a planar configuration according to the present invention, Figure 3 is an exemplary view showing a side configuration according to the present invention, the present invention Silver spherical closed hydrolysis reactor (10); An ultrasonic stirrer 20 installed in the hydrolysis reactor 10 to stir the subcritical water in the hydrolysis reactor 10 ultrasonically; A subcritical water generator 30 connected to the hydrolysis reactor 10 and the condensed water supply pipe 60 and supplying the generated subcritical water into the hydrolysis reactor through the condensed water supply pipe; It is installed to be located under the hydrolysis reactor (10) is to include a residue collecting portion 40 is stored the residue discharged from the hydrolysis reactor (10), the ultrasonic stirrer 20 to generate the ultrasonic wave The dissolving film of the decomposition object formed by the count is removed.

The hydrolysis reactor 10 is a spherical hermetic container 11 which is supplied with a decomposition object and subcritical water, the opening and closing port 12 is installed in the upper center of the main body, and installed in the lower center of the main body corresponding to the opening and closing port The residue discharge port 13 and the vapor discharge port 14 provided on both sides with respect to the residue discharge port 13 are comprised, respectively.

The main body 11 has an inner radial surface 15 having a circular shape, and a spout 16 formed on one side is connected to the subcritical water generator 30 by a condensate supply pipe 60, and a connector 17 formed on the other side. ) Is connected to the vacuum generating unit 70 to maintain the vacuum state in the main body.

The circular inner radial surface 15 means a spherical inner surface of the body, and the circular inner radial surface 15 is intended to prevent a standing wave phenomenon generated in the radiation of all energy.

The opening and closing hole 12 is for supplying the decomposition object into the main body 11, it is coupled so that the sealing force is maintained by the gear device (18). Since the gear device uses a known general sealing means, a detailed description thereof will be omitted.

The residue discharge port 13 is for discharging the residue which is a reaction product of the decomposition target to the outside, is installed in the lower portion of the main body to maintain the sealing force, when the decomposition of the decomposition target is operated by the system control unit 50, the residue (decomposition) A discharge control automatic valve 19 for discharging the product) is provided.

The steam outlet 14 is operated by the system control unit 50 at the completion of work, that is, decomposition, and has a function of discharging high temperature and high pressure steam in the main body 11 to the outside.

The subcritical water generating unit 30 is a high temperature and high pressure boiler 31 for heating and increasing the water, a saturated steam generator 32 connected to the high temperature and high pressure boiler 31 to generate saturated steam, and the generated subcritical water It is to include a subcritical water control unit 33 for increasing the temperature, the pressure is increased by a temperature heating heater and a high pressure compression pump.

The subcritical water control unit 33 is to maintain a constant temperature and pressure of the subcritical water, and prevents the depressurization and deceleration of the subcritical water according to the temperature and pressure of the optimal subcritical water state. That is, in the high temperature and high pressure boiler 31 generates nano water droplets of fine particles having a temperature of 250 ° C. and a pressure of 18 to 20 atmospheres, and is generated in the saturated steam generator 32. The saturated steam is heated and increased by the subcritical water control unit 33 to supply the subcritical water (condensed water) in an optimal state to the decomposition object.

At this time, the subcritical water (condensed water) is moved to the condensed water supply pipe 60 through the supply nozzle 34, and is discharged into the hydrolysis reactor 10 through the outlet 16 connected to the condensed water supply pipe (60).

The subcritical water control unit 33 as described above includes a subcritical water control unit 33 composed of a temperature heating heater 331 and a high pressure compression pump 332, and automatically adjusts to maintain a set temperature and pressure. The unit 333 and the operation button unit 334 are included.

That is, the subcritical water generating unit 30 is optimal when the saturated water vapor generating unit 32 generates water in a normal state with subcritical water (saturated water vapor) at high temperature and high pressure according to the operation of the high temperature and high pressure electric boiler 31. When the temperature heating heater and the high pressure compression pump belonging to the subcritical water control unit 33 operate to maintain the subcritical water state, the automatic control unit for maintaining the set temperature and pressure is operated to set the coagulation axis (subcritical water count). It is maintained in the state, and the condensate maintained in the set state by the operation of the operation button portion is blown into the main body from the outlet 16 of the hydrolysis reactor along the condensate supply pipe 60 through the condensate supply nozzle (34).

In addition, the high temperature and high pressure electric boiler 31, the saturated steam generator and the subcritical water control unit is connected to the system control unit 50 and controlled.

Subcritical water produced as described above is strongly activated solubility of gas and liquid solubility at around 250 ° C, so that the solubility of salts is increased more than 1,000 times to accelerate hydrolysis of hardly degradable organic waste and at the same time strong oxidation reaction. It has such a property that it immediately destroys to the benzene ring of dioxins and polyvinyl chloride (PCBs).

The ultrasonic stirring unit 20 is an ultrasonic vibrator 21 installed in the hydrolysis reactor 10, an ultrasonic oscillator 22 connected to the ultrasonic vibrator 21 to generate vibration in the ultrasonic vibrator, and the ultrasonic vibrator 21. And an oscillator switching controller 23 connected to the ultrasonic oscillator 22 to control the ultrasonic waves.

A plurality of ultrasonic vibrators 21 are installed to be located below the hydrolysis reactor 10, and the ultrasonic oscillator 22 is connected to the ultrasonic vibrator 21 to be positioned outside the hydrolysis reactor 10. have.

The oscillator switching controller 23 is installed outside the hydrolysis reactor 10 to control the ultrasonic wave oscillated in the ultrasonic oscillator 22 to be output from the ultrasonic oscillator 21 at a frequency of about 20 to 30 kHz, thereby providing optimum stirring effect. Optimum conditions for hydrolysis by free combination by maintaining (promoting dissolution by stirring effect through bubble generation) and operating or alternating a plurality of ultrasonic vibrators 21 installed in a plurality of hydrolysis reactors 10, respectively. To form.

The ultrasonic frequency is constant at 5 kHz or less, which causes cavitation irrespective of frequency, but at 10 kHz or more, the required sound intensity is gradually increased and becomes very large at 100 kHz or more. The higher the frequency, the higher the power (negative intensity) is required, because the higher the frequency, the less time will be allowed for the bubbles to become large enough. The present invention is to generate the most efficient cavitation through the frequency of about 20 ~ 30kHz in consideration of the characteristics of the cavitation according to the frequency band as described above.

The output of such a frequency band enables the hydrolysis reaction continuously to completely decompose the decomposition object in 20 to 30 minutes without harm. In addition, the vibration from the ultrasonic vibrator in the frequency band 20 ~ 30 kHz has a wavelength of about 20,000 to 30,000 times per second, which causes the cavitation phenomenon.

The cavitation phenomenon is a phenomenon in which microbubbles are generated and dissipated by the pressure of ultrasonic waves when energy of ultrasonic waves propagates in a solution, and is accompanied by very large pressures (thousands of thousands to atm) and high temperature (hundreds to thousands of degrees). In addition, in the hydrolysis reactor according to the present invention, in addition to the impact energy by cavitation, the stirring effect, the thermal action, etc. by the radial pressure of the ultrasonic wave itself causes synergy, and generates a large pressure and instantaneous high heat, It is the driving force for various physicochemical actions under the state of condensation.

In addition, the present invention simultaneously radiates through a plurality of ultrasonic vibrators 21 installed in the hydrolysis reactor 10 to prevent erosion phenomenon that the standing surface of the ultrasonic wave is eroded by standing wave formation disturbance and standing wave. In order to have uniform cavitation dispersion effect, it is composed of multi-frequency method.

For example, as shown in FIGS. 2 and 3, the ultrasonic vibrator 21 is installed at four lower portions of the hydrolysis reactor main body 11, and the vibrator switching controller 23 is disposed at four outer lower portions of the hydrolysis reactor main body 11. Ultrasonic wave oscillated from the ultrasonic oscillator 21 installed at the four outer parts of the hydrolysis reactor main body 11) is maintained through the vibrator switching controller 23 to maintain the optimum stirring effect (promoting dissolution by stirring effect through bubble generation). Ultrasonic waves are output from the ultrasonic vibrator at a frequency of about 20 kHz to 30 kHz, and the ultrasonic vibrator generates ultrasonic waves having one or more frequencies in one band of 20 to 30 kHz frequencies.

The residue collection unit 40 is installed to be located below the residue discharge port 13 of the hydrolysis reactor, the body support 41 for supporting the main body of the hydrolysis reactor, and to be located inside the body support 41. In addition, the residue discharge port 13 includes a residue collection table 42 installed to be located.

The present invention configured as described above is a vacuum generating unit 70 for sealing the hydrolysis reactor 10 through the gear device 18 connected to the opening and closing hole 12, to maintain the vacuum state of the main body 11 is the main body ( 11 is installed and connected to the lower body in the main body 11, a plurality of ultrasonic vibrators 21 for the multi-frequency ultrasonic radiation is installed, the ultrasonic oscillator 22 is installed at the end of the body leg 80, Oscillator switching controller 23 for the ultrasonic control is connected and installed.

In addition, a main body support 41 is installed below the main body 11 of the hydrolysis reactor 10, a residue discharge port 13 is installed at the center of the lower part of the main body, and a residue collection stand 42 is installed below the main body. The steam outlet 14 is installed at both lower sides, and the discharge control automatic valve 19 is installed to be connected to the residue outlet 13.

Hereinafter, the operation of the present invention in detail.

The present invention is to open the opening and closing openings installed on the hydrolysis reactor main body injecting the organic waste, which has been physically treated and crushed in a preliminary step for the decomposition treatment, and then completely closed the opening and closing, generating the vacuum generator, subcritical water in the system control unit The condensate (subcritical water) generated by operating the unit is injected from the condensate supply nozzle, and ejected from the condensate outlet through the condensate supply pipe into the hydrolysis reactor body,

After controlling the ultrasonic wave oscillated by the ultrasonic oscillator in the oscillator switching controller, it radiates through the ultrasonic oscillator to induce the cavitation phenomenon, and the hydrolysis reaction is removed by removing the subcritical water dissolving membrane surrounding the decomposition object with the stirring effect through bubble generation. It proceeds very fast.

That is, the bubbles generated by the cavitation phenomenon continue to form a space in which the subcritical water can penetrate the surface of the organic waste at a very high speed. At this time, the collision moisture having a high density due to the enormous explosive force and collision is usually separated thousands of times of water vapor, and most of the chlorine atoms having a chemically very strong structure are separated, and again include benzene rings of PCBs (polychlorinated biphenyl). The molecular structure is completely decomposed, and many hardly decomposable organic wastes are treated in 20 to 30 minutes.

In addition, a small amount of water generated from the hydrolysis reactor powder is discharged to the outside through the steam outlet of the lower part, and when the final state of the decomposition product is confirmed by the system control unit, the operation completion signal sounds automatically and the operation of the high temperature and high pressure boiler is automatically performed. After the high temperature and high pressure steam of the hydrolysis reactor main body is discharged through the steam outlet, the discharge control automatic valve is opened and the residue (decomposition product) is discharged and accumulated through the residue outlet into the residue collection tank.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

1 is an exemplary view showing a configuration according to the present invention

2 is an exemplary view showing a planar configuration according to the present invention

Figure 3 is an exemplary view showing one side configuration according to the present invention

DESCRIPTION OF THE REFERENCE NUMERALS

(10): hydrolysis reactor (11): main body

(12): opening and closing port (13): residue discharge outlet

(14): steam outlet (15): internal radial surface

(16): spout (17): connector

(18): Gear device (19): Discharge control automatic valve

(20): ultrasonic stirring part (21): ultrasonic vibrator

(22): ultrasonic oscillator (23): oscillator switching controller

(30): subcritical water generating unit 31: high temperature high pressure boiler

(32): saturated steam generator (33): subcritical water controller

(34): supply nozzle (40): collecting residue

(41): main body support (42): residue collection stand

(50): system control unit (60): condensate supply pipe

70: vacuum generating unit 80: main body leg

Claims (10)

Spherical closed hydrolysis reactor; An ultrasonic stirring unit which is installed in the hydrolysis reactor and ultrasonically stirs the subcritical water in the hydrolysis reactor; A subcritical water generating unit connected to the hydrolysis reactor and the condensed water supply pipe and supplying the generated subcritical water into the hydrolysis reactor through the condensed water supply pipe; Including a residue collection unit is installed to be located under the hydrolysis reactor to store the residue discharged from the hydrolysis reactor; The organic waste recycling mechanism by subcritical water and ultrasonic radiation, characterized in that the ultrasonic stirrer to generate ultrasonic waves to remove the dissolved film formed by the subcritical water. The method according to claim 1; The hydrolysis reactor includes a main body which is a spherical hermetic pressure vessel supplied with a decomposition object and a subcritical water, Opening and closing door installed in the upper body, Residue discharge port which is installed in the lower part of the main body corresponding to the opening and closing port, Organic waste recycling apparatus by subcritical water and ultrasonic radiation, characterized in that it comprises a steam outlet which is respectively installed on both sides around the residue discharge port. The method according to claim 2; The main body is an organic waste recycling mechanism by the subcritical water and ultrasonic radiation, characterized in that the inner radial surface has a circular shape. The method according to claim 2; The residue discharge outlet is an organic waste recycling mechanism by subcritical water and ultrasonic radiation, characterized in that the discharge control automatic valve is further provided to operate by the system control unit to discharge the residue (decomposition product). The method according to claim 1; The subcritical water generator is a high temperature and high pressure boiler for increasing the temperature and pressure, Saturated steam generating unit connected to the high temperature and high pressure boiler to produce saturated steam, Organic waste recycling machine by subcritical water and ultrasonic radiation, characterized in that it comprises a subcritical water control unit for maintaining the subcritical water generated by the saturated steam generator by a temperature heating heater and a high-pressure compression pump to maintain a set value Device. The method according to claim 1; The ultrasonic stirring unit includes an ultrasonic vibrator installed in the hydrolysis reactor, an ultrasonic oscillator connected to the ultrasonic vibrator to vibrate the ultrasonic vibrator by an electrical signal, and an oscillator switching controller connected to the ultrasonic vibrator and the ultrasonic oscillator to control the ultrasonic wave. Organic waste recycling mechanism by subcritical water and ultrasonic radiation. The method according to claim 6; And said ultrasonic stirring unit has a frequency of 20 to 30 kHz. The organic waste recycling machine by subcritical water and ultrasonic radiation. The method according to claim 2; The residue discharge unit includes a main body support for supporting the main body of the hydrolysis reactor, and a residue collection unit which is installed to be located inside the main body support and under the residue discharge port. Waste recycling machinery. The method according to claim 6; And the ultrasonic vibrator generates ultrasonic waves having one or more frequencies in one band of the 20-30 kHz frequency. The method according to claim 6 or 9; The ultrasonic vibrator is an organic waste recycling mechanism by subcritical water and ultrasonic radiation, characterized in that a plurality of ultrasonic vibrators are operated simultaneously, or a plurality of ultrasonic vibrators are alternately operated.

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