KR102348469B1 - Hybrid type digester apparatus with noise protection - Google Patents

Abstract

The present invention relates to a hybrid anaerobic digester system having vibration and noise prevention functions. The hybrid anaerobic digester system having vibration and noise prevention functions of the present invention can stably generate biogas such as methane. The present invention includes: a digester body; a stirring device; first and second pumping devices; a bypass device; and a pumping unit.

Description

Hybrid type anaerobic digester system equipped with vibration and noise prevention function {HYBRID TYPE DIGESTER APPARATUS WITH NOISE PROTECTION}

The present invention relates to a hybrid-type anaerobic digester system equipped with vibration and noise prevention functions, and more particularly, to uniformly distribute the concentration of the digestion filtrate in the hybrid-type anaerobic digester system equipped with vibration and noise prevention functions and to the inside of the digester. A hybrid type with vibration and noise prevention functions that improves the stabilization function by preventing the formation of accumulated sediment and enables the stable production of biogas such as methane by uniformly contacting the complex organic matter contained in the organic waste and the enzyme microorganism It relates to an anaerobic digester system.

In general, anaerobic digestion refers to the decomposition of organic wastewater into methane and carbon dioxide by the decomposition of anaerobic microorganisms by putting various organic wastewater such as food waste eliminator and manure in a closed tank. In other words, it can be said that biogas (methane) is produced through biological treatment of high-concentration waste and wastewater containing a large amount of organic matter such as organic waste, livestock manure, sewage sludge, and high-concentration leachate under anaerobic conditions without oxygen.

For this process, the tank receiving the organic wastewater is called an anaerobic digester.

As time passes after installation, the anaerobic digester continues to accumulate inorganic deposits such as calcareous, bone powder, and fiber inside the digester and gradually solidifies from the bottom of the digester toward the upper part to occupy the space inside the digester, so the processing capacity of the digester is reduced. .

And as time goes on, the deposited sediment is often deposited toward the bottom of the digester, so it usually blocks the external outlet installed at the bottom of the digester, thereby interfering with the normal operation of the digester.

In this respect, mixing inside the anaerobic digester is very important. The conventional anaerobic digester mixing method can be classified into three types. There is a mechanical stirring method, which is installed and stirred, and a pump stirring method using a pump.

First, the non-powered gas agitation method by gas pressure is currently installed and used in most anaerobic digesters of sewage treatment plants, but there is a problem that the mixing efficiency is not appropriate, and as a long time after installation, sediments continue to accumulate inside the digester floor As the layers are gradually stacked from the lower part to the upper part, the dead zone increases, reducing the space required for mixing, and causes short-circuiting, resulting in overload due to lack of volume.

As a result, the possibility of generating a layer of temperature in which the upper and lower temperatures are different from each other due to the single circuit phenomenon increases, and ultimately causes overload by anaerobic microorganisms, leading to operation failure.

As such, mixing is one of the most important design factors for maintaining the optimum conditions of temperature and microorganisms, that is, the optimum conditions of a high-rate anaerobic digestion reactor.

In addition, the mechanical stirring method in which a stirrer is directly installed and stirred is a method to stir by installing an impeller inside with a motor outside. There is a very high risk of causing structural problems due to the nature of biogas, and there is a limit to which much attention should be paid as there is a risk of explosion due to the nature of biogas.

In addition, the agitation method by the pump is likely to be affected by the solid material inside the digester, and in this case, the mixing efficiency by the pump may also decrease.

In particular, when the solid material exceeds a certain concentration, the mixing characteristics are different from that of water or wastewater. Rather than mixing by a pump, a flow path is formed by the pump and a plug flow type flow occurs, which is a disadvantage of creating a layer of concentration inside the digester. there was

To this end, it was necessary to maintain a constant concentration inside the digester, thereby properly mixing the concentration of organic matter inside the digester, maintaining the temperature difference between the upper and lower parts of the digester to a minimum, and maintaining a constant concentration of solid substances in the upper and lower parts of the digester. do.

Since the concentration of solid material is an important part in determining the volume of the anaerobic digester and controlling the entire system, proper mixing inside the digester allows the organic material to be delivered and contacted to the anaerobic microorganism cell wall, and the function of separating the generated biogas from the cell wall and to maintain a constant temperature so that a temperature difference between the upper and lower parts of the digester does not occur.

On the other hand, the temperature inside the anaerobic digester may bring about an increase in the growth rate of microorganisms according to the increase in temperature.

The rapid growth of microorganisms generates a large amount of sludge, but since it is possible to supply appropriate microorganisms to the anaerobic digester for stable operation, maintenance of an appropriate temperature inside the digester is a factor that enables the efficiency of energy conversion to be constantly maintained.

In this regard, the development of a digester capable of maintaining a constant concentration of solid substances in the anaerobic digester and allowing them to be properly mixed while maintaining the temperature difference between the upper part and the lower part of the digester to a minimum is desired.

As such, the reaction for stabilization of organic matter and gas (methane) generation in the anaerobic digester is governed by the hydrolysis rate of complex organic matter, and the decomposition of organic matter by microorganisms is easily decomposed by extracellular enzymes suitable for waste and wastewater to be treated. Hydrolysis to a low molecular weight substance occurs, and this hydrolase is produced only by a sufficient amount of bacteria and does not limit the overall stabilization reaction, but the enzyme and microorganism must be actively contacted with organic matter for efficient hydrolysis.

In order for the organic material to be uniformly mixed with microorganisms and to grow in the reaction tank, the temperature and PH conditions of the reaction tank are required.

As a result, the intermediate product produced through the hydrolysis and acid fermentation steps is used as a substrate (food) for methanogenic microorganisms to produce methane. Because it can be generated, the importance of agitation is very important.

Korean Patent Registration No. 10-0709333 (Registered on Dec. 2007) Korean Patent Registration No. 10-0493209 (Registered on May 25, 2005)

The present invention has been devised to solve the above problems, and is equipped with a vibration and noise prevention function that can greatly improve efficiency by using a mixture of a gas stirring method, a pump stirring method, and a mechanical stirring method. An object of the present invention is to provide a hybrid anaerobic digester system.

The present invention utilizes a mechanical stirring method using an impeller to overcome the disadvantages of intermittently operated pump-type stirring to prevent deposition of organic matter and microorganisms. Vibration and noise prevention that can solve the problems of the pump-type stirring method An object of the present invention is to provide a hybrid anaerobic digester system equipped with a function.

The present invention connects the pipe to the lower part of the anaerobic digester, induces mixing of the upper part and the lower part using a pump, and increases the flow rate by forming the diameter of the pipe injected into the upper part to have a small diameter, thereby improving the efficiency of vibration and noise An object of the present invention is to provide a hybrid anaerobic digester system equipped with a prevention function.

The present invention is installed to re-introduce biogas generated through anaerobic digestion by connecting a pipe to reduce the density of ring-shaped organic matter due to the inflow of gas and increase the efficiency of smooth contact with microorganisms, such as scum, etc. An object of the present invention is to provide a hybrid anaerobic digester system equipped with vibration and noise prevention functions to reduce the occurrence of

The present invention installs an ultrasonic vibrator in a pump pipe to stimulate microorganisms to activate microorganisms, and can be used as a removal device to remove STURUVITE (stones) generated in a horizontal pipe, and to increase the contact time between microorganisms and organic matter An object of the present invention is to provide a hybrid anaerobic digester system equipped with vibration and noise prevention functions to reduce power costs.

The present invention provides a hybrid anaerobic digester for preventing vibration, shock and noise caused by the rotation of the impeller installed in the stirring device and for preventing vibration, vibration, shock and noise occurring at the ends of pipelines installed in the digester for that purpose

The present invention is not limited to the above purpose and other objects not mentioned may be provided within a range that can be clearly understood by those of ordinary skill in the art to which the present invention pertains.

The present invention comprises: a digester body 10 installed to store organic waste and to generate biogas by decomposing it using microorganisms; a stirring device 102 installed in the central portion of the digester body 10 and agitating the organic waste using an impeller 18 composed of a plurality of blades inside the digester body 10; By installing pumps 20 and 40 on the outside of the digester body 10, the liquid slurry of organic waste stirred in the digester body 10 is circulated through the pump line pipes 22 and 42, and the digester a first pumping device 104 and a second pumping device 106 in which pump line pipes 22 and 42 are installed to supply the slurry into the body 10; Slurry is supplied using the first pumping device 104 and the second pumping device 106 and bypass lines 34 and 54 are installed at the upper end of the digester body 10 in the digester body 10 . a bypass device 112 for rapidly supplying and mixing gas and liquid slurry by recirculating the biogas generated from; It is installed in the center of the inner bottom of the digester body 10 to prevent vibration and impact of the vertical suction part 60 and the horizontal suction part 62 connected to the pumps 20 and 40, and to increase the rotational force of the impeller 18 It is characterized in that it includes a pumping unit 110 for agitating the slurry from the upper and lower parts while at the same time preventing noise by offsetting and inducing a stable rotational force.

The first pump device 104,

a pump 20 installed outside the digester body 10; a pump line pipe 22 connected horizontally to one side of the pump 20; a supply line pipe 24 extending vertically from the pump line pipe 22; a bent part line pipe 26 extending from the supply line pipe 24 and being bent roundly in one direction; The bent section line pipe 26 is extended and inserted into the digester body 10, is formed to be inclined at a predetermined angle A, and the slurry supplied through the pump 20 and the bypass device 112 through the It is preferable that the supplied gas is mixed and composed of an inclined part line pipe 27 for spraying.

The bypass device 112 is

a bypass line 54 in the shape of a giyeok character (a) installed on the outer side of the upper portion of the digester body 10; a control valve 56 installed in the middle of the bypass line 54 to control the amount and speed of gas; The lower end of the bypass line 54 is connected to the point where the bent line pipe 46 and the inclined line pipe 48 meet, and an orifice 58 is formed so that the gaseous gas and the liquid slurry are separated. It is preferable that the digester body 10 be installed so that it can be rapidly sprayed into the interior.

A plurality of upper and lower vibrators are installed in the upper and lower portions of the pump line pipes 22 and 42 of the first pump device 104 and the second pump device 106 to activate microorganisms using ultrasonic vibrations and pump It is desirable to remove stones and deposits in the line tubes 22 and 42 and the supply line tubes 24 and 44.

The pumping unit 110,

An anti-vibration shaft 74 positioned between the vertical suction unit 60 and the horizontal suction unit 62 connected to the pumps 20 and 40 and vertically fixed and installed in the center of the bottom of the digester body 10; a pump guide bracket (76) fitted to the anti-vibration shaft (74) to support the corners connected to support the vertical suction unit (60) and the horizontal suction unit (62) to prevent vibration and noise; It is preferable to include an impeller guide 78 that is coupled to the upper end of the anti-vibration shaft 74 and rotates in association with the rotational operation of the impeller 18 while rotating, agitates the slurry, and prevents vibration and noise. .

As such, the present invention has excellent agitation effect due to gas activity in the digester, and complete mixing of gaseous gas and liquid slurry inside the digester body is possible, greatly improving efficiency by reusing the discharged gas It works.

In addition, the present invention has an effect of obtaining a stirring effect with excellent efficiency with a small rotational force by stirring using an impeller in the digester, and prevents sedimentation by pumping scum and oily wastes into the digester and at the same time prevents deposition of the slurry And by improving the mixing rate, the contact with microorganisms is greatly improved, and since it can be digested quickly, there is an effect of greatly reducing the maintenance cost, and the vibration, shock and noise caused by the rotation of the impeller installed in the stirring device are prevented, and the pipeline installed in the digester It is effective in preventing vibration, vibration, shock and noise occurring at the ends of the tubes.

In addition, the present invention has the effect of checking the state in the anaerobic digester by alternately using the mechanical, gas, and pump, and stirring and digesting the anaerobic digester so that maintenance is very convenient and the agitation efficiency and digestibility are excellently improved.

1 is a perspective view showing the structure of a hybrid anaerobic digester system equipped with vibration and noise prevention functions of the present invention;
Figure 2 is a cross-sectional view of Figure 1
3 is a partially enlarged view showing the bypass structure in which the biogas of the present invention is re-introduced
4 is a view showing a pumping unit of the present invention;
5 is a view showing the structure of another embodiment of the horizontal suction part of the pumping unit of the present invention
6 is a view showing the structure of another embodiment of the horizontal suction part of the pumping unit of the present invention

The following objects, other objects, features and advantages of the present invention will be readily understood through the following preferred embodiments in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms.

Rather, the embodiments introduced herein are provided so that the disclosed subject matter may be thorough and complete, and that the spirit of the present invention may be sufficiently conveyed to those skilled in the art.

Embodiments described and illustrated herein also include complementary embodiments thereof.

In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, an element referred to as 'comprise' and/or 'comprising' does not exclude the presence or addition of one or more other elements.

In addition, in describing the components described as embodiments below, descriptions of technical contents that are well known in the technical field to which the present invention pertains and are not directly related to the present invention will be omitted. This is to make the gist of the present invention clearer without obscuring the gist of the present invention by omitting unnecessary description.

Hereinafter, a specific embodiment according to the hybrid anaerobic digester system equipped with the vibration and noise prevention function of the present invention will be described.

1 is a perspective view showing the structure of a hybrid anaerobic digester system equipped with vibration and noise prevention functions of the present invention, FIG. 2 is a cross-sectional view of FIG. 1, and FIG. 3 is a bypass structure in which the biogas of the present invention is reintroduced. Some enlarged views showing

And, Figure 4 is a view showing the pumping unit of the present invention, Figure 5 is a view showing the structure of another embodiment of the horizontal suction part of the pumping unit of the present invention, Figure 6 is another horizontal suction part of the pumping unit of the present invention It is a diagram showing the structure of another embodiment.

Referring to FIGS. 1 to 6, the hybrid anaerobic digester system equipped with the vibration and noise prevention function of the present invention will be described. First, as shown in FIG. The anaerobic digester system 100 includes a stirring device 102, a first pump device 104, a second pump device 106, a third pump device 108, a pumping unit 110, and a bi It includes a pass device (112).

The stirring device 102 rotates the impeller 18 using the motor 14 and contains a large amount of organic matter such as food waste (including food waste water), livestock manure, sewage sludge, and high-concentration leachate inside the anaerobic digester 100. Organic wastes such as high-concentration wastes and wastewater are mixed and stirred together with biological treatment in anaerobic conditions without oxygen through a mechanical method.

The first pumping device 104 is installed in the lower left portion of the anaerobic digester 100 and circulates gaseous gas and liquid fine slurry by the first pumping device 104 .

The second pumping device 106 is installed on the lower right side of the anaerobic digester 100 and is installed symmetrically with the first pumping device 104 .

The first pumping device 104 and the second pumping device 106 stimulate the microorganisms in the anaerobic digester 100 while sucking and circulating the organic waste to activate and elevate the microorganisms, thereby increasing the efficiency of smooth contact with the microorganisms. installed to do

And, the third pump device 108 is installed on one side vertically from the top to the bottom of the anaerobic digester 100, and the agitation device 102 is installed in the center of the anaerobic digester 100 from top to bottom. It is installed to supply organic waste into the anaerobic digester 100 .

A pumping unit ( 110) is installed.

Next, a bypass device 112 is installed at upper ends of the first pumping device 104 and the second pumping device 106 , respectively.

The bypass device 112 partially recovers biogas (methane) generated inside the anaerobic digester 100 and re-introduces it to the first pump device 104 and the second pump device 106 for use. .

In more detail, referring to FIG. 2 , the hybrid-type anaerobic digester 100 has a cylindrical digester body 10 formed thereon, and a plurality of vertical digesters are formed on the inner surface of the digester body 10 in the vertical direction. A baffle 12 is formed, and a stirring device 102 is installed in the central portion of the digester body 10 from top to bottom.

In the stirring device 102, a motor 14 as a power source is installed in the upper central portion, a rotating shaft 16 is installed in a vertical downward direction at a lower portion of the motor 14, and an impeller ( 18) is installed.

A plurality of through-holes 19 are formed in the impeller 18, and the through-holes 19 are circular, oval, and It may be variously formed in a polygonal shape such as a triangle, a quadrangle, and a pentagon, and is formed by selecting any one of them.

A first pumping device 104 and a second pumping device 106 are installed in the digester body 10 to circulate organic waste, and the first pumping device 104 is located at the lower end of the digester body 10 . A pump 20 is installed, and a pump line pipe 22 is installed horizontally in the left direction to the pump 20, and a supply line pipe 24 extending upwardly extending to the pump line pipe 22 is provided. Connected and installed, the upper end of the supply line pipe 24 is bent in the right direction to form a bent line pipe 26, and the right end of the bent line pipe 26 is bent at a predetermined angle A), and the digester The inclined portion line tube 27 is formed by extending into the body 10 .

The inclined line pipe 27 is formed to extend into the inside of the digester body 10 to be submerged in organic waste, and the organic waste stirred by the pump 20 is circulated through the pipe.

An initial vibrator 28 is attached to the pump line pipe 22, and the initial vibrator 28 is stirred inside the digester body 10 to give vibration to the sucked organic waste so that the organic waste flows smoothly. and at the same time to provide vibration so that stones do not occur in the pump line tube 22 .

An upper vibrator 30 is installed at the left upper end of the horizontally installed pump line pipe 22, and a lower vibrator 32 is installed at the left lower end, and the upper vibrator 30 and the lower vibrator 32 are installed. is installed in the upper and lower portions, and by installing in a zigzag manner, smooth the flow of organic waste passing through the pump line pipe 22 .

And, the upper end of the supply line tube 24 is bent roundly in one direction, preferably in the direction of the digester body 10 to form a bent line tube 26, and the right end of the bent line tube 26 is long. It extends to form an inclined portion line pipe (27), and the inclined portion line tube (27) is introduced into the digester body (10) and installed.

At this time, the inclined portion line pipe 27 is bent at a predetermined angle (A) with the inner wall of the digester body (10) to be inclined toward the inner center of the digester body (10), and the predetermined angle (A) is 20 degrees to It is preferable to form an inclined bending in the range of 60 degrees. Because, when the predetermined angle (A) is less than 20 degrees, when the organic waste flowing into the pumps 20 and 40 is put into the digester body 10, it cannot sufficiently spread over a wide range and deposits in the digester body 10 This is accumulated as a dead zone and the stirring efficiency is lowered and, conversely, when the predetermined angle (A) is wider than 60 degrees, the organic waste is injected close to the water surface and is close to the impeller 18 of the stirring device 102. This is because the stirring is not performed smoothly and the stirring efficiency is lowered.

In the upper part of the pump line pipe 22 installed as described above, vibration is generated using ultrasonic waves to smooth the flow of organic waste passing through the pump line pipe 22, and to the inside of the pipe body of the pump line pipe 22 An initial vibrator 28 is installed to shake off organic wastes so that they do not adhere or to activate microorganisms and to separate organic wastes that have been attached to the inside of the conduit to separate them.

On one side of the initial vibrator 28, as shown in FIG. 2, on the left side, a plurality of vibrators are installed in the upper part of the pump line tube 22, the upper vibrators 30 are fixed at regular intervals, The lower vibrator 32 is fixed to the lower part of the pump line tube 22 while forming a zigzag displaced from the upper vibrator 30 at the lower part of the upper vibrator 30 .

A control valve 29 is installed in the pump line pipe 22 between the initial vibrator 28 and the upper and lower vibrators to control the amount and speed of organic waste supplied through the pump line pipe 22 .

At this time, the pumping unit 110 is installed at the lower center of the inner side of the digester body 10 , and the pumping unit 100 has an anti-vibration shaft 74 installed in the center of the bottom of the digester body 10 vertically. A cylindrical pump guide bracket 76 is coupled to the outer part of the anti-vibration shaft 74, and the upper portion of the pump guide bracket 76 is coupled to the anti-vibration shaft 74 so as to be rotatable in the horizontal direction. An impeller guide 78 used is provided.

The impeller guide 78 is rotatable as described above, but rotates together with the impeller 18 of the stirring device 102, but is installed so that the rotation ratio is different in the upper and lower parts, so that the stirring efficiency can be excellently improved.

The pump guide bracket 76 uses a flexible and soft packing material such as rubber and silicone to prevent noise and vibration, and the impeller guide 78 prevents eccentric rotation of the impeller 18 and vibration and noise. In order to minimize the frictional force, it is designed to have the rotational force of the naturally rotating bearing, and it is preferable not to directly affect the rotational force of the impeller 18 by minimizing the frictional force.

Subsequently, a bypass device 112 is installed in the bent line tube 26 , and the bypass device 112 has a bypass line 34 installed in the shape of an inverted reversing element, and the bypass line 34 has A control valve 36 is installed.

An orifice part 38 is formed in the bypass line 34 , and the orifice part 38 is formed at a point where the bent part line pipe 26 ends and the upper end of the inclined part line pipe 27 meet.

The orifice portion 38 is made in the form of a venturi tube and is pulled up by the pump 20 and at the same time is forcibly introduced into the digester body 100 to quickly provide organic waste, thereby forming a ring shape with the inflow of gas. The band can reduce the density of organic matter, increase the efficiency of smooth contact with microorganisms, and prevent the occurrence of scum.

That is, by making the diameter of the bent line pipe 26 larger and the diameter of the inclined line pipe 27 smaller, the flow rate is increased and the pressure is lowered and a negative pressure is generated, so that the gas contains a high concentration of suspended material. It is mixed with the liquid slurry and injected into the digester body 10 at high speed.

At this time, bubbles are generated due to the cavitation phenomenon and the biogas production efficiency is increased by increasing the contact efficiency of microorganisms by breaking the fatty ring of organic waste.

On the other hand, the upper end of the bypass line 34 of the bypass device 112 is bent in the right direction and installed to extend into the digester body 10 , and bio such as methane generated inside the digester body 10 . It is installed in a circulation structure in which gases are re-introduced into the bypass line 34 and introduced into the digester body 10 again through the orifice part 38 .

A control valve 36 is installed in the middle of the bypass line 34 and the orifice part 38 to control the amount and speed of re-introduced biogas.

Subsequently, in the second pump device 106 installed in the lower part of the digester body 10, a pump 40 is installed outside the lower part of the digester body 10, and a pump line pipe 42 is installed in the pump 40. A supply line pipe 44 that is installed horizontally in the right direction, extends to the pump line pipe 42 and rises upward is connected and installed, and the upper end of the supply line pipe 44 is bent in the left direction. A bent line tube 46 is formed, and the left end of the bent line tube 46 is bent at a predetermined angle (A) and extends into the digester body 10 to form an inclined line tube 48 . .

The inclined part line pipe 48 is formed to extend into the inside of the digester body 10 to be immersed in organic waste, agitated by the stirring device 102, and organic waste activated by microorganisms by the pump 40 circulated through the conduit.

An upper vibrator 50 is installed on the upper right side of the pump line tube 42, and a lower vibrator 52 is installed on the lower right side. By installing each in a zigzag at the lower part, the organic waste flows smoothly through the pump line pipe 42 .

And, the upper end of the supply line tube 44 is bent roundly in one direction, preferably in the direction of the digester body 10 to form a bent line tube 46, and the left end of the bent line tube 46 is long. It extends to form an inclined portion line tube 48 , and the inclined portion line tube 48 is introduced into the digester body 10 and installed.

At this time, the inclined portion line pipe 48 is bent at a predetermined angle (A) with the inner wall of the digester body (10) to be inclined toward the inner center of the digester body (10), and the predetermined angle (A) is 20 degrees It is preferable to form an inclined bend in the range of 60 degrees. Because when the predetermined angle (A) is less than 20 degrees, when the organic waste flowing in through the pump 40 is put into the digester body 10, it does not spread sufficiently in a wide range, and the sediment of the digester body 10 is The agitation efficiency is lowered because it is piled up as a dead zone of the lower outer wall of the digester body, and on the contrary, when the predetermined angle (A) is wider than 60 degrees, the organic waste is injected close to the water surface and injected into the agitation device 102 The impeller of the This is because the stirring is not performed smoothly because it does not approach (18) and the stirring efficiency is lowered.

In the upper part of the pump line pipe 42 installed as described above, vibration is generated using ultrasonic waves to smooth the flow of organic waste passing through the pump line pipe 42, and to the inside of the pipe body of the pump line pipe 42 A plurality of upper and lower vibrators 50 and 52 are installed to shake off organic wastes so that they do not adhere or to activate microorganisms and at the same time to separate organic wastes which have been attached to the inside of the conduit to separate them.

On one side of the upper and lower vibrators 50 and 52, as shown in FIG. 2, on the right side, a plurality of vibrators are installed on the upper part of the pump line tube 42. The upper vibrators 50 are spaced at regular intervals. The lower oscillators 52 are fixed to the lower part of the pump line tube 42 while forming a zigzag displaced from the upper oscillators 50 at the lower part of the upper oscillators 50.

A control valve 72 is installed in the pump line pipe 42 between the upper and lower vibrators to control the amount and speed of organic waste supplied through the pump line pipe 42 .

Subsequently, a bypass device 112 is installed in the bent line tube 46 , and the bypass device 112 is provided with a bypass line 54 in the shape of a giyeok character, and the bypass line 54 is adjusted A valve 56 is installed.

An orifice part 58 is formed in the bypass line 54 , and the orifice part 58 is formed at a point where the bent part line pipe 56 ends and the upper end of the inclined part line pipe 48 meet.

The orifice portion 58 is made in the form of a venturi tube and is pulled up by the pump 40 and at the same time is forcibly introduced into the digester body 10 to provide organic waste quickly, thereby forming a ring shape with the inflow of gas. The band can reduce the density of organic matter, increase the efficiency of smooth contact with microorganisms, and prevent the occurrence of scum.

That is, by making the diameter of the bent line pipe 46 larger and the diameter of the inclined line pipe 48 smaller, the flow rate is increased and the pressure is lowered and a negative pressure is generated, so that the gas contains a high concentration of suspended material. It is mixed with the liquid slurry and injected into the digester body 10 at high speed.

At this time, bubbles are generated due to the cavitation phenomenon and the biogas production efficiency is increased by increasing the contact efficiency of microorganisms by breaking the fatty ring of organic waste.

On the other hand, the upper end of the bypass line 44 of the bypass device 112 is bent in the right direction and installed to extend into the digester body 10 , and bio such as methane generated inside the digester body 10 . It is installed in a circulation structure in which gases are re-introduced into the bypass line 44 and introduced into the digester body 10 again through the orifice part 48 .

A control valve 56 is installed in the middle of the bypass line 44 and the orifice part 48 to control the amount and speed of re-introduced biogas.

Each vertical suction unit 60 is installed in the upper direction of the pumps 20 and 40 installed as described above, and the vertical suction unit 60 extends into the digester body 10 and the digester body 10 ) at the upper end of the vertical suction unit 60 extending to the inside, each horizontal suction unit 62 is formed in the horizontal direction.

The organic waste activated by microorganisms and stirred by the stirring device 102 is introduced through the horizontal suction unit 62 installed as described above, and through the pumps 20 and 40, each of the pump line pipes 22 and 42 It rises through the circulatory system.

In addition, a gas discharge pipe 64 is installed vertically on the upper right side of the digester body 10 , and biogas such as methane generated in the digester body 10 is discharged through the gas discharge pipe 64 .

A control valve 66 is installed in the gas discharge pipe 64 , and the gas is discharged by the control valve 66 and the amount and speed of the discharged gas can be adjusted.

On the other hand, an upper pump 68 is installed in the upper left side of the digester body 10 , and an upper pump supply line pipe 70 is installed in the upper pump 68 , and the upper pump supply line pipe 70 is adjusted A valve 72 is installed.

Organic waste is supplied through the upper pump (68).

The upper pump supply line pipe 70 is installed vertically and supplies organic waste to the vicinity of the impeller 18 of the stirring device inside the digester body 10 .

At one lower end of the upper pump supply line pipe 70 , a lower link 80 is fixedly installed by a pipe fixing means 84 , and the other end of the lower link 80 is fixed to the baffle by a baffle fixing means 82 . connected to the fixed

The pipe fixing means 84 and the baffle fixing means 82 use bolts, nuts, pits, rivets, and the like.

And one end of the upper link 86 is connected and fixed to the upper end of the baffle 12 by a baffle fixing means 82, and the other end is fixed by fixing the inclined portion line tube 27 and the upper pump supply line tube 70. Prevents vibration, vibration and noise from one end.

At the same time, one end of the upper link 86 is fixed to the inclined line pipe 48 by a pipe fixing means 84 and the other end is connected and fixed to the baffle 12 by a baffle fixing means 82 .

The organic waste is stirred inside the digester body 10 by the stirring device 102 and the pumps 20 and 40 and microorganisms installed in the digester body 10 as described above, and recirculated by the pumps 20 and 40, It is possible to operate a hybrid anaerobic digester that can be continuously activated by microorganisms and can compensate for the disadvantages of pump-type stirring and mechanical stirring by recycling to the bypass device 112 .

The pump guide bracket 78 of the above-described pumping unit 110 is installed between the upper end of the vertical suction unit 60 to prevent left and right vibrations to prevent shock, vibration and noise, and the vibration prevention shaft 74 The impeller guide 78 installed at the upper end is stabilized by partially offsetting the force agitated during rotation of the impeller 18 by adjusting the rotation ratio with the impeller 18 to 2:1 to 5:1, and the impeller 18 It is installed so that the organic waste is stirred by using different rotation ratios from the upper and lower parts while rotating with the . That is, the impeller 18 and the stirring shaft 16 by using the rotational force generated from the upper and lower parts by using the lower impeller guide 78 that rotates naturally with minimal frictional force for the rotation of the impeller 18 installed on the lower part of the long shaft. ) to stabilize the vibration and noise caused by the eccentricity generated at the lower end of the

In this way, by operating the hybrid anaerobic digester of the present invention, mechanical agitation using the stirring device 102 is made and the stirred organic waste is circulated through the first pump device 104 and the second pump device 106 and the biogas Efficiency can be greatly improved by recirculating and stirring using

The anaerobic digester 100 of this hybrid method can derive maximum efficiency by intermittently sequentially operating to induce contact time between microorganisms and organic waste and to reduce power costs.

In other words, variable operation is possible by performing the operation for 10 to 20 minutes or by dividing the operation in 1 hour increments. The stirring operation is performed using the stirring device 102, and the organic wastes that have been first stirred are activated using the first and second pump devices and microorganisms to produce biogas. ) are used to circulate.

At the same time, by operating the biopass device 112, the gas generated in the digester body 10 is reused to greatly increase the working efficiency and production efficiency by 2-3 times or more.

The operation method of the hybrid anaerobic digester 100 can select a stirring device and a pump device according to the amount, size, and time of the anaerobic waste input, which can be operated in various ways, but as an example of that, first, stirring using pump devices is performed 10 After performing for about 15 minutes to 15 minutes, the stirring operation of the pumping devices is stopped for about 10 to 15 minutes to be activated using microorganisms, and the stirring device 102 is operated for about 20 to 25 minutes to stir, and then again to the stirring device 102 1 cycle can be performed by repeating the operation of stopping for about 10 to 15 minutes and re-activating using microorganisms.

3 is a view showing the structure of an orifice using a venturi tube of the present invention. A supply line pipe 44 having a thick diameter is installed on the right side of the digester body 10, and the upper part of the supply line pipe 44 is round. A bent line pipe 46 bent into a shape is formed, and an inclined line pipe 48 is formed to extend into the digester body 10 in the left direction of the bent line pipe 46 .

At this time, the orifice portion 58 is formed at the point where the inclined portion line tube 48 and the bent portion line tube 46 meet.

That is, the inclined portion line tube 48 having a smaller diameter than the diameter of the supply line tube 44 and the bent portion line tube 46 is connected and installed to make the tube narrower.

In the orifice part 58 installed in this way, the slurry supplied along the supply line pipe 44 is supplied at a high pressure, and as it passes through the orifice part 58, the flow rate increases and the pressure decreases, so that the inclined part line pipe 48 is followed. It will be rapidly injected into the digester body (10).

In the supply line pipe 44 and the bent part line pipe 46, they are strongly mixed in a liquid state, and gasification is made according to high-speed injection while passing through the orifice 58, so that the liquid and gas at a higher level than mixing by hydraulic pressure are formed. Mixing is possible.

In addition, when the predetermined inclination angle (A) of the inclined line pipe 48 is less than 20 degrees, the liquid and gas mixing rate is excellent and the speed can be rapidly supplied due to gasification, but it is difficult to bend and the bent line pipe 46 ), there is a risk of vibration and damage due to large stress (stress) in the The feed flow becomes slow and gentle, which lowers the liquid-gas mixing rate.

In the case of the hybrid anaerobic digester 100 as described above, when the mechanical stirring device 100 is used, the contact time between organic waste and microorganisms is increased through low-speed operation to increase biogas, and the bypass device 112 The efficiency can be increased by circulating the self-generated gas inside the digester body 10 using the By supplying the gasified gas into the digester body 10, it has excellent workability.

Figure 4 is a view showing the pumping unit of the present invention, Figure 5 is a view showing the structure of another embodiment of the horizontal suction part of the pumping unit of the present invention, Figure 6 is another one of the horizontal suction part of the pumping unit of the present invention As a drawing showing the structure of the embodiment, first described with reference to FIG. 4 , an anti-vibration shaft 74 is vertically installed at the inner central lower end of the digester body 10 , and on the outer side of the anti-vibration shaft 74 A cylindrical pump guide bracket 76 is coupled and installed, and an impeller guide 78 coupled to the anti-vibration shaft 74 is installed on the upper portion of the pump guide bracket 76 to be rotatable in the horizontal direction.

The impeller guide 78 is rotatable as described above, but rotates together with the impeller 18 of the stirring device 102, but is installed so that the rotation ratio is different in the upper and lower portions, thereby preventing noise and vibration to improve the stirring efficiency can do it

In addition, a suction hole 62 is formed in the horizontal suction unit 62 , and an end of the horizontal suction unit 62 is formed to branch in a Weisser (Y) shape.

5 is another embodiment of the horizontal suction unit of the present invention, and the end of the horizontal suction unit 62 is bent upward to form a bent portion 63 so that the slurry can be sucked in a vertical direction.

6 is another embodiment of the horizontal suction unit of the present invention. The distal end of the horizontal suction unit 62 is formed by bending upward, and the diffuser plate 88 is formed on the upper portion of the bent unit 63 bent upward. ) are combined and installed.

A plurality of inlet holes 89 are formed in the diffuser plate 88 , and the liquid slurry is sucked along the inlet hole 89 and circulated by the pumps 20 and 40 .

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned can be variously implemented by those of ordinary skill in the art to which the present invention belongs, and within this range Technical changes will be said to be within the scope of the present invention.

10: digester body 12: baffle
14: stirring motor 16: stirring shaft
18: impeller 20, 40: pump
22,42: pump line pipe 24,44: supply line pipe
26,46: bent line pipe 28: initial vibrator
30,50: upper vibrator 32,52: lower vibrator
34,54: bypass line pipe 36,56: control valve
38,58: orifice part 60: vertical suction part
62: horizontal intake 64: gas discharge pipe
66: control valve 68: upper pump
70: upper pump supply line pipe 72: control valve
74: anti-vibration shaft 76: pump guide bracket
78: impeller guide 80: lower link
82: baffle fixing means 84: pipe fixing means
86: upper link
100: anaerobic digester
102: stirring device 104: first pumping device
106: second pumping device 108: third pumping device
110: pumping unit 112: bypass device

Claims (5)

a digester body 10 that stores organic waste and is installed to generate biogas by decomposing it using microorganisms;
a stirring device 102 installed in the central portion of the digester body 10 and agitating the organic waste using an impeller 18 composed of a plurality of blades inside the digester body 10;
By installing pumps 20 and 40 on the outside of the digester body 10, the liquid slurry of organic waste stirred in the digester body 10 is circulated through the pump line pipes 22 and 42, and the digester a first pumping device 104 and a second pumping device 106 in which pump line pipes 22 and 42 are installed to supply the slurry into the body 10;
Slurry is supplied using the first pumping device 104 and the second pumping device 106 and bypass lines 34 and 54 are installed at the upper end of the digester body 10 in the digester body 10 . a bypass device 112 for rapidly supplying and mixing gas and liquid slurry by recirculating the biogas generated from;
It is installed in the center of the inner bottom of the digester body 10 to prevent vibration and impact of the vertical suction part 60 and the horizontal suction part 62 connected to the pumps 20 and 40, and to increase the rotational force of the impeller 18 Including a pumping unit 110 for agitating the slurry from the upper and lower parts while at the same time inducing a stable rotational force by offsetting it,
The first pump device 104,
a pump 20 installed outside the digester body 10;
a pump line pipe 22 connected horizontally to one side of the pump 20;
a supply line pipe 24 extending vertically from the pump line pipe 22;
a bent part line pipe 26 extending from the supply line pipe 24 and being bent roundly in one direction;
The bent section line pipe 26 is extended and inserted into the digester body 10, is formed to be inclined at a predetermined angle A, and the slurry supplied through the pump 20 and the bypass device 112 through the It consists of an inclined part line pipe 27 for mixing and spraying the supplied gas,
The bypass device 112 is
a bypass line 54 in the shape of a giyeok character (a) installed on the outer side of the upper portion of the digester body 10;
a control valve 56 installed in the middle of the bypass line 54 to control the amount and speed of gas;
The lower end of the bypass line 54 is connected to the point where the bent line pipe 46 and the inclined line pipe 48 meet, so that an orifice 58 is formed so that gaseous gas and liquid slurry are transferred to the digester. It is installed so that it can be rapidly sprayed into the body 10,
A plurality of upper and lower vibrators are installed in the upper and lower portions of the pump line pipes 22 and 42 of the first pump device 104 and the second pump device 106 to activate microorganisms using ultrasonic vibrations and pump Removes stones and deposits in the line pipes (22, 42) and the supply line pipes (24, 44),
The pumping unit 110,
an anti-vibration shaft 74 positioned between the vertical suction unit 60 and the horizontal suction unit 62 connected to the pumps 20 and 40 and vertically fixed and installed in the center of the bottom of the digester body 10;
a pump guide bracket 76 fitted to the anti-vibration shaft 74 to support the corners connected to support the vertical suction unit 60 and the horizontal suction unit 62 to prevent vibration and noise; It includes an impeller guide 78 that is coupled to the upper end of the anti-vibration shaft 74 and rotates according to the rotational operation of the impeller 18 while rotating and prevents vibration and noise when the slurry is stirred,
An upper pump 68 is installed in the upper left side of the digester body 10 , an upper pump supply line pipe 70 is installed in the upper pump 68 , and a control valve 72 is installed in the upper pump supply line 70 . ) is installed, and organic waste is supplied through the upper pump 68,
The upper pump supply line pipe 70 is installed vertically and supplies organic waste to the impeller 18 of the stirring device inside the digester body 10,
At one lower end of the upper pump supply line pipe 70 , a lower link 80 is fixedly installed by a pipe fixing means 84 , and the other end of the lower link 80 is the baffle by a baffle fixing means 82 . One end of the upper link 86 is connected and fixed to the upper end of the baffle 12 by a baffle fixing means 82, and the other end is fixed to the inclined line pipe 27 and the upper pump supply line pipe 70 ) is fixed to prevent vibration, vibration, noise, etc. occurring at one end, and one end of the upper link 86 is fixed to the inclined line pipe 48 by a pipe fixing means 84 and the other end is a hybrid anaerobic digester system with vibration and noise prevention functions, characterized in that it is connected and fixed to the baffle 12 by the baffle fixing means 82. delete delete delete delete

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