KR102650869B1 - Apparatus for preprocessing of bio-gas - Google Patents

Abstract

In the present invention, a biogas pretreatment device with a compact capacity and integrated configuration is provided that can reduce hydrogen sulfide from biogas through a wet absorption tower process in a biogas fueling facility.
The biogas pretreatment device according to the present invention simplifies the process with a compact capacity and integrated configuration, makes it easy to move and install the device, requires less installation site, can reduce costs, and can be used to produce biogas on a medium/small scale. It can also be used in fuel conversion facilities.

Description

Biogas pretreatment device {APPARATUS FOR PREPROCESSING OF BIO-GAS}

The present invention relates to a biogas pretreatment device, and more specifically, to a biogas fueling facility with a compact capacity for reducing hydrogen sulfide from biogas through a wet microbial process, which includes an absorption tower, a microbial reactor, a concentrator, an aerator, and an air remover. It relates to a biogas pretreatment device with an integrated configuration.

Biogas is obtained by anaerobic digestion of organic wastes with a high biomass content, such as livestock manure, food waste, sewage treatment plant sludge, and household waste landfills. Due to its high methane content, it has recently been used as an alternative fuel to fossil fuels. Be in the spotlight. Therefore, its utilization is very high in Korea, and it is used in various fields such as producing electricity or as an alternative fuel to natural gas. Biogas is produced by anaerobic digestion of organic waste in the absence of oxygen and the decomposition of organic materials, usually methane (CH ₄ : about 45-60%), carbon dioxide (CO ₂ : about 25-50%), It is composed of nitrogen (N ₂ : 0-10%) and trace amounts of hydrogen sulfide (H ₂ S) and ammonia.

Hydrogen sulfide is a toxic substance that not only has a fatal impact on life when the human body is exposed to it, but is also converted into sulfur dioxide and sulfuric acid during the process of using biogas for cogeneration and power generation, causing corrosion of metallic boilers, engine cylinders, and exhaust pipes. It will have a negative impact. Therefore, it is essential to build a biogas pretreatment facility to reduce hydrogen sulfide in a biogas fuel conversion facility.

There are various methods to reduce hydrogen sulfide present in biogas, but the wet microbial process using sulfating microorganisms has the advantage of being able to treat high concentrations (up to 15,000-20,000ppm) and having low operating costs compared to other methods. However, facilities for the conventional wet absorption tower process are constructed with separate devices for each means, such as cleaning, sulfur oxidation reaction, and concentration, and require a large installation site, so they can only be applied to large-scale biogas fueling facilities.

Therefore, there has been a demand for the development of a biogas pretreatment device with a compact capacity and integrated configuration that can reduce hydrogen sulfide from biogas through a wet absorption tower process in medium- and small-scale biogas fueling facilities.

Republic of Korea Patent No. 10-1465140 Republic of Korea Patent No. 10-2091862

The problem to be solved by the present invention is to provide a biogas pretreatment device with a compact capacity and integrated configuration that can reduce hydrogen sulfide from biogas through a wet microbial process in a biogas fueling facility.

In order to solve the above problem, the biogas pretreatment device according to an example of the present invention,

An absorption tower in which biogas flows into the bottom and is discharged to the top, and the biogas and process water come into contact with each other to discharge process water in which hydrogen sulfide in the biogas has been absorbed to the bottom.

A microbial reactor in which the absorption tower is installed and the process water in which hydrogen sulfide discharged from the bottom of the absorption tower is absorbed is converted into biosulfur by sulfating microorganisms and recycled into process water that can be supplied to the absorption tower;

A concentrator installed inside the microbial reactor to concentrate the biosulfur produced in the microbial reactor and discharge it to the outside;

an aeration unit installed inside the microbial reactor and having an air supply pipe for supplying air for aeration into the microbial reactor; and

It includes an air remover installed inside the microbial reactor and removing air remaining in the microbial reactor.

In one example of the present invention, biogas flows into the bottom of the absorption tower (scrubber) and is discharged from the top, and process water (Lean Solution; a solution in which H ₂ S is not dissolved) is a packing layer installed at the top of the absorption tower. (Random Packing) It is sprayed on the surface, and the biogas and process water cross-contact each other in the packed layer, and the process water absorbs the hydrogen sulfide in the biogas, and the process water (Reach solution) in which the hydrogen sulfide has been absorbed is discharged to the bottom, and the absorption tower is used for microorganisms. It is installed in a bio-reactor.

In an example of the present invention, in the microbial reactor, process water (Reach Solution) in which hydrogen sulfide is dissolved discharged from the bottom of the absorption tower is homogeneously mixed with process water (Lean Solution) without hydrogen sulfide in the microbial reactor, and the process is carried out by sulfation microbial reaction. Hydrogen sulfide ions dissolved in water are converted into biosulfur and recycled into process water (lean solution) without hydrogen sulfide that can be supplied to the absorption tower.

In one example of the present invention, the enrichment tank is a cylindrical column-shaped storage tank, and an additional column is installed inside to ensure solid-liquid separation by gravity. The enrichment tank is stored inside the microbial reaction tank, and the microbial reaction tank It has the function of concentrating the bio-sulfur generated within, and the bio-sulfur can be discharged to the outside through a discharge nozzle installed at the bottom of one side.

In one example of the present invention, the aeration unit may further include an air supply blower connected to the air supply pipe and operating to supply air.

In one example of the present invention, the air supply pipe may include a blocking valve for each branch pipe installed to supply air equally to each branch pipe. At the bottom of the air supply pipe, a diffuser plate can be installed that converts the air for aeration into fine bubbles. The diffuser plate is installed to blow air downward, so that biosulfur does not settle in the microbial reactor and is homogeneously mixed in the process water to form particles. It functions. The purpose of the supply effect of air for aeration is to supply oxygen in the process water and homogeneously mix the process water in the microbial reactor. In addition, during long-term operation, blockage within the acid substrate may occur due to accumulation of biosulfur particles in the acid substrate or sediments due to microbial reactions and side reactions. To solve this problem, a cleaning shut-off valve is installed on both sides of each branch pipe where the acid substrate is installed. Can be installed.

In one example of the present invention, the microbial reactor is manufactured as a flange type that can be connected to and separated from the absorption tower, and further includes a process water supply pipe necessary for supplying process water to the upper part of the absorption tower and a process water supply pipe formed of a flange type pipe. It can be included.

In one example of the present invention, the microbial reactor includes a manhole formed at the bottom of one side through which a user can enter and exit for internal inspection or maintenance work; A lifting lug installed to protrude outward from the upper part of one side for traction; and an anchor bracket installed on the lower edge of the microbial reactor to securely install the microbial reactor, and an airtight member may be laminated to each of the lifting lug and the anchor bracket to maintain the airtightness of the microbial reactor.

In one example of the present invention, the microbial reactor may further include a handrail installed at the top to prevent the user from falling.

In one example of the present invention, the absorption tower includes a process water injection mechanism for spraying process water into the interior of the absorption tower; And it may include a filling layer filled with a filler.

In one example of the present invention, the air remover includes a suction part that is inclined at a set angle and sucks process water (a structure in which air bubbles present in the process water are broken during the suction process and only the process water is sucked into the pump); A body connected to the lower part of the suction part; Legs that support the body and discharge moisture downward; And it may include a nozzle on one side of the body that can supply process water to the pump.

In one example of the present invention, the air remover removes air for the purpose of preventing cavitation within the pump due to air remaining in the microbial reaction tank.

In one example of the present invention, the biogas pretreatment device includes a process water pump connected to the microbial reactor to circulate process water; Nutrient injection means for injecting microbial nutrients into the circulating process water; It may further include an injection means for injecting an alkaline solution (NaOH, CaOH, KOH, etc.) into the circulating process water, and an electric control panel for controlling the operation of the process water pump, the alkaline solution injection means, and the nutrient injection means.

In one example of the present invention, the biogas pretreatment device may further include a heat exchanger to remove reaction heat, and the heat exchanger may be installed between the process water pump discharge pipe and the upper nozzle of the absorption tower.

In the present invention, a biogas pretreatment device with a compact capacity and integrated configuration is provided that can reduce hydrogen sulfide from biogas through a wet microbial process in a biogas fueling facility.

The biogas pretreatment device according to the present invention simplifies the process with a compact capacity and integrated configuration, makes it easy to move and install the device, requires less installation site, can reduce costs, and can be used to produce biogas on a medium/small scale. It can also be used in fuel conversion facilities.

The effects of the present invention are not limited to the effects described above, and should be understood to include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention.

1 is a diagram showing the external appearance of a biogas pretreatment device according to an embodiment of the present invention.
Figure 2 is a diagram showing the decomposed structure of a biogas pretreatment device according to an embodiment of the present invention.
FIG. 3 is a view showing the front of the biogas pretreatment device shown in FIG. 1.
FIG. 4 is a view showing a side of the biogas pretreatment device shown in FIG. 1.
Figure 5 is a diagram showing a structure in which an absorption tower is coupled to a microbial reactor according to an embodiment of the present invention.
Figure 6 is a diagram showing a vertical cross-sectional structure of the front of an absorption tower according to an embodiment of the present invention.
Figure 7 is a diagram showing a vertical cross-sectional structure of the side of an absorption tower according to an embodiment of the present invention.
Figure 8 is a diagram showing the vertical cross-sectional structure of a microbial reaction tank according to an embodiment of the present invention.
Figure 9 is a diagram showing the horizontal cross-sectional structure of a microbial reactor according to an embodiment of the present invention.
Figure 10 is a diagram showing the configuration of an aeration unit according to an embodiment of the present invention.
Figure 11 is a diagram showing the structure of an air remover coupled to a microbial reaction tank according to an embodiment of the present invention.
Figure 12 is a diagram showing the detailed configuration of an air remover according to an embodiment of the present invention.
Figure 13 is a diagram showing the structure of a concentration tank coupled to a microbial reaction tank according to an embodiment of the present invention.
Figure 14 is a diagram showing the detailed configuration of a concentration tank according to an embodiment of the present invention.
Figure 15 is a diagram showing the detailed configuration of a lifting lug according to an embodiment of the present invention.
Figure 16 is a diagram showing the detailed configuration of an anchor bracket according to an embodiment of the present invention.
Figure 17 is a diagram showing the cross-sectional structure of an anchor bracket according to an embodiment of the present invention.
Figure 18 is a diagram showing a handrail installed in a microbial reactor according to an embodiment of the present invention.
Figure 19 is a diagram showing the structure of a handrail according to an embodiment of the present invention.
Figure 20 is a diagram showing an additional configuration for performing the main process of the biogas pretreatment device according to an embodiment of the present invention.

Like reference numerals refer to like elements throughout the specification. This specification does not describe all elements of the embodiments, and general content or overlapping content between the embodiments in the technical field to which the disclosed invention pertains is omitted.

Throughout the specification, when a part is said to be “connected” to another part, this includes not only direct connection but also indirect connection, and indirect connection includes connection through a wireless communication network. do.

Additionally, when a part "includes" a certain component, this means that it may further include other components rather than excluding other components, unless specifically stated to the contrary.

Throughout the specification, when a member is said to be located “on” another member, this includes not only the case where a member is in contact with another member, but also the case where another member exists between the two members.

Terms such as first and second are used to distinguish one component from another component, and the components are not limited by the above-mentioned terms.

Singular expressions include plural expressions unless the context clearly makes an exception.

The identification code for each step is used for convenience of explanation. The identification code does not explain the order of each step, and each step may be performed differently from the specified order unless a specific order is clearly stated in the context. there is.

Hereinafter, the present invention will be described with reference to the attached drawings. However, the present invention may be implemented in various different forms and, therefore, is not limited to the embodiments described herein. In order to clearly explain the present invention in the drawings, parts that are not related to the description are omitted, and similar parts are given similar reference numerals throughout the specification.

Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

Referring to FIGS. 1 to 19, the biogas pretreatment device 100 according to an embodiment of the present invention is designed with compact capacity and an integrated configuration to simplify the process, so that biogas flows in from the bottom and is discharged from the top. An absorption tower 110 is installed inside and discharges the process water in which the biogas and process water are in contact with the biogas and absorbed hydrogen sulfide in the biogas to the bottom. The absorption tower 110 is installed inside and is discharged from the bottom of the absorption tower 110. A microbial reactor 120 in which process water in which hydrogen sulfide has been absorbed is converted into biosulfur by sulfating microorganisms and recycled into process water that can be supplied to the absorption tower 110, and a microbial reactor 120 installed inside the microbial reactor 120. A concentrator 130 that concentrates the biosulfur generated in the biosulfur and discharges it to the outside, installed inside the microbial reactor 120, and equipped with an air supply pipe 160 that supplies air for aeration to the inside of the microbial reactor 120. It may include a base 140 and an air remover 150 that is installed inside the microbial reactor 120 and removes air remaining in the microbial reactor 120.

The lower part of one side of the absorption tower 110 is connected to a biogas production facility so that biogas containing hydrogen sulfide can be introduced. Here, biogas production facilities can produce biogas through anaerobic digestion of organic waste such as food, livestock manure, and sewage sludge. At this time, the absorption tower 110 may further include a filtration means (not shown) to remove foreign substances contained in the incoming biogas. The filtration means can filter dust, oil, moisture, etc. If foreign substances contained in biogas are not removed, the nozzle of the device will be clogged and the process water will be diluted due to excessive moisture inflow. Therefore, the absorption tower 110 can effectively remove foreign substances such as dust, oil, moisture, etc. through filtration means. .

The absorption tower 110 may have an inlet 112 through which biogas flows in at the bottom of one side, and an outlet 114 through which biogas is discharged at the top. Biogas flowing into the absorption tower 110 may move upward from the inside of the absorption tower 110 and be discharged to the outside through the outlet 114. Here, the absorption tower 110 may perform an additional function of increasing the methane concentration in biogas in which some carbon dioxide has been absorbed. At this time, carbon dioxide dissolved in the process water can play an important role in maintaining carbon and alkalinity, which are the main nutrients for microorganisms.

The absorption tower 110 is installed at the upper part of one side and includes a process water injection device 116 that sprays process water into the inside of the absorption tower 110, and a packing layer 118 filled with a filler having a large porosity and specific surface area. It can be included.

The process water injection device 116 can inject process water into the interior of the absorption tower 110, bring biogas into contact with the process water, and remove hydrogen sulfide in the biogas by absorbing it into the process water.

The filling layer 118 may use pall rings as a filling material.

In addition, the absorption tower 110 is equipped with a baffle or gas liquid at the top of the absorption tower to prevent trace amounts of moisture and sulfur particles from being entrained in the process water sprayed inside and moving to the next process through the upper nozzle of the absorption tower. A separation device (not shown) may be installed. In order to effectively separate moisture and sulfur particles, a Kock Out Drum (not shown) may be further included in the downstream facility.

The absorption tower 110 is formed in the shape of a cylindrical column by flange-joining the upper and lower parts based on the absorption tower flange 111, and the lower part can be inserted into and fixed in the microbial reaction tank 120. Here, the lower end of the absorption tower 110 gradually becomes thinner toward the tip, and a plurality of process water discharge nozzles 119 are installed on the side of the inclined lower end to discharge the process water collected at the bottom into the microbial reaction tank 120. there is.

In the microbial reactor 120, a biological oxidation and reduction reaction is carried out in which hydrogen sulfide absorbed (dissolved) in the process water flowing in from the absorption tower 110 is converted to bio-sulfur by sulfating microorganisms, and the process water is returned to the absorption tower. It can be supplied as (110). In this regard, the microbial reaction tank 120 has a storage space inside to accommodate the lower part of the absorption tower 110 and the concentration tank 130.

In addition, the microbial reaction tank 120 is formed in a cylindrical shape and may include a first opening 121 at the top into which the absorption tower 110 is inserted and a second opening 122 into which the concentration tank 130 is inserted.

The first opening 121 is formed as a circular hole, and may be formed to correspond to the lower diameter of the absorption tower 110.

The second opening 122 is formed as a circular hole, and may be formed to correspond to the diameter of the concentration tank 130.

In this way, biological oxidation and reduction reactions for hydrogen sulfide absorbed (dissolved) in the process water proceed in the microbial reactor 120. During this process, many foams are formed on the top of the process water, and a spray device (Foam Spray) is used to effectively remove them. )(125) can be used to effectively prevent foam formation.

Sulfur-oxidizing microorganisms are introduced into the microbial reactor (120) using process water or seed sludge from facilities operated in Korea, and the biogas pretreatment device (100) can be operated normally as soon as possible through microbial culture under stable conditions. You can.

The enrichment tank 130 is formed as a cylindrical column-shaped storage tank and can be stored and combined within the microbial reaction tank 120. Additionally, the concentration tank 130 can concentrate biosulfur, which is a by-product generated by the biological oxidation and reduction reaction of sulfur-oxidizing microorganisms on hydrogen sulfide dissolved in process water in the microbial reaction tank 120, and discharge it to the outside. At this time, biosulfur may be generated as solid particles of elemental sulfur (biosulfur) by reacting HS- ions of hydrogen sulfide dissolved in process water in the microbial reactor 120 with oxygen by sulfating microorganisms. The general solid content conditions are 5kg S/m of biosulfur in the microbial reactor 120, and the solid content of about 25kg S/m3 in the concentrate tank 130 is maintained to determine the biosulfur discharge conditions in the concentrate tank.

The thickening tank 130 can discharge the concentrated bio-sulfur sludge to the outside through the sulfur discharge nozzle 132 installed at the bottom of one side. Here, the bottom of the thickening tank 130 gradually becomes thinner toward the tip, and may be formed in an eccentric shape. This concentration tank 130 can be used to smoothly discharge biosulfur into the sulfur discharge nozzle 132 by using the step that occurs when the bottom diameter changes from a large diameter to a small diameter.

The aeration unit 140 may supply air into the microbial reactor 120. In this regard, the aeration unit 140 is installed inside the microbial reactor 120 and may include an air supply pipe 160 that supplies air for aeration into the microbial reactor 120.

The air supply pipe 160 may be formed of a plurality of branch pipes to connect the top and sides of the microbial reactor 120 within the microbial reactor 120. For example, the air supply pipe 160 may be formed in a “ㅗ” shape. Additionally, a plurality of air supply pipes 160 may be disposed within the microbial reaction tank 120 as required. These air supply pipes 160 may be equipped with a blocking valve (not shown) for each branch pipe to clean the interior and supply air equally to each branch pipe.

A diffuser plate 161 that converts aeration air into fine bubbles may be installed at the lower part of the air supply pipe 160. The diffuser plate 161 is installed so that air is ejected downward, so that biosulfur does not precipitate in the microbial reactor 120 and is homogeneously mixed in the process water to form particles.

In addition, the aeration unit 140 may further include an air supply blower 170 that is connected to the air supply pipe 160 and operates to supply air.

The air supply blower 170 operates to supply air, and can supply air to be supplied into the microbial reactor 120 to the air supply pipe 160.

The heat exchanger 180 is installed at the process water pump discharge portion and serves to maintain the temperature in the process water at a constant condition (36 to 37°C) by removing reaction heat produced by the reaction of sulfur-oxidizing microorganisms.

The air remover 150 may remove air remaining in the microbial reactor 120 as aeration progresses within the microbial reactor 120. By removing the remaining air, the air remover 150 can prevent damage from occurring due to cavitation within the process water pump 220 when the process water is sucked into the process water pump 220, which will be described later.

Here, the air remover 150 is inclined at a set angle and includes a suction part 152 through which air is sucked, a body 154 connected to the lower part of the suction part 152, and a leg supporting the body 154. (156), and may include a discharge nozzle (158) coupled to one side of the body (154) to stably supply process water to the process water pump.

The suction part 152 is divided into a plurality of slots by a plurality of inclined partitions 153, and effectively destroys and separates air bubbles supplied by aeration in the process water to separate the air in the process water, allowing only process water to be supplied to the pump. It is supposed to be there.

The microbial reactor 120 is connected to the process water injection device 116 to supply process water, and may further include a process water supply pipe 200 formed of a detachable flange type pipe.

The process water supply pipe 200 is detachably connected to the process water injection device 116 installed on one upper side of the absorption tower 110 and the upper side of the microbial reactor 120 to supply process water to the absorption tower 110. .

In addition, the microbial reaction tank 120 has a manhole 190 formed at the bottom of one side for user access, a lifting lug 192 installed at the top of one side for traction, and a microbial reaction tank 120 for fixing and installing the microbial reaction tank 120. An anchor bracket 196 installed at the lower edge of the reaction tank 120 may be further included.

The manhole 190 may provide a passage for users to enter and exit the microbial reactor 120 for internal management. This manhole 190 is formed of a flange-type pipe with a diameter that a user can pass through, and can be coupled to the side of the microbial reactor 120.

The lifting lug 192 is installed to protrude to the outside of the microbial reactor 120 and may include a ring hole 193 into which a traction hook is fastened. Additionally, the lifting lug 192 may be fastened to the side of the microbial reactor 120 by a fastening member 194. At this time, in order to maintain the airtightness of the microbial reactor 120, the airtight member 195 may be laminated and coupled to the fastening member 194.

The anchor bracket 196 is installed at the lower edge of the microbial reactor 120 and may include an anchor hole 197 into which an anchor is coupled. At this time, in order to maintain the airtightness of the microbial reactor 120, an airtight member 195 may be laminated and coupled to the side of the microbial reactor 120 and the upper surface of the anchor bracket 196.

Additionally, the microbial reactor 120 may further include a handrail 210 installed at the top to prevent the user from falling.

The handrail 210 may be formed as a circular structure corresponding to the cylindrical shape of the microbial reactor 120. At this time, the handrail 210 may be formed as a multi-stage frame made of metal. Additionally, the handrail 210 may be partially open to allow the user to enter and exit, and may be formed at a safe height to prevent the user from falling.

Referring to Figure 20, the biogas pretreatment device 100 according to an embodiment of the present invention is connected to the microbial reactor 120 to circulate process water in order to perform the main process for reducing hydrogen sulfide in biogas. A water pump 220, a nutrient injection means 230 for injecting nutrients into the circulating process water; Injection means 250 for injecting an alkaline solution into the circulating process water, heat exchanger 180 and process water pump 220 for removing reaction heat, nutrient injection means 230, alkaline solution injection means 250, heat exchanger It may further include an electric control panel 240 that controls the operation of 180 and the air supply blower 170.

The nutrient injection means 230 stores the microbial nutrient and injects the nutrient into the process water circulated in the microbial reactor 120 to supplement the nutrients of the sulfated microorganisms introduced into the microbial reactor 120.

The electric control panel 240 is equipped with a circuit board for signal control and operates the process water pump 220, the nutrient injection means 230, the air supply blower 170, and the caustic soda injection means 250, which will be described later. You can control it.

Here, the process water pump 220, nutrient injection means 230, air supply blower 170, and electric control panel 240 are each manufactured in modular form and operated as an integrated package, making transportation and installation easy. Users can operate it easily.

Meanwhile, the biogas pretreatment device 100 according to an embodiment of the present invention further includes a caustic soda injection means 250 for injecting caustic soda into the process water supplied from the process water pump 220 to the absorption tower 110. It can be included.

The alkaline solution injection means 250 has an injection port in the nozzle of the foam spray 125, and is configured to spray process water injected with caustic soda into the upper part of the microbial reactor. In order to maintain a high efficiency hydrogen sulfide removal rate, the alkalinity in the process water must be maintained above a certain level, so a small amount of caustic soda must be injected to maintain alkalinity and pH. Most of the caustic soda is regenerated through the microbial reaction process, so injection of a small amount of caustic soda is required, and some of it must be discharged due to increased Na+ concentration during long-term operation, so injection is necessary as a supplement. Caustic soda uses a 25% aqueous solution commonly produced domestically.

The alkaline solution injection means 250 is separate from the process water pump 220, the nutrient injection means 230, the air supply blower 170, and the electric control panel 240 in accordance with the regulations for hazardous chemical handling facilities. It must be manufactured and installed.

The heat exchanger 180 is installed to remove reaction heat from the sulfur-oxidizing microbial reaction, which is an exothermic reaction, and is installed between the discharge pipe of the process water pump 220 and the upper nozzle of the absorption tower 110.

The biogas pretreatment device 100 according to an embodiment of the present invention has a size of ф 2860mm * H8370mm.

The biogas pretreatment device 100 according to an embodiment of the present invention is designed to simplify the process by configuring and arranging the device compactly for easy transportation and installation, especially for medium- and small-scale biogas utilization facilities operating in Korea. It was designed to suit.

In addition, in the biogas pretreatment device 100 according to an embodiment of the present invention, the absorption tower 110, the absorption tower 110, and the microbial reaction tank 120 are made of glass fiber reinforced plastic (FRP) to prevent corrosion and reduce weight. It can be formed from any material. Because of this, it can have the advantage of reducing the burden of weight when moving and enabling shipment after completing the warming process during production.

The description of the present invention described above is for illustrative purposes, and those skilled in the art will understand that the present invention can be easily modified into other specific forms without changing the technical idea or essential features of the present invention. will be. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive. For example, each component described as unitary may be implemented in a distributed manner, and similarly, components described as distributed may also be implemented in a combined form.

100: Biogas pretreatment device
110: absorption tower
111: Absorption tower flange
112: inlet
114: outlet
116: Process water injection mechanism
118: Filling layer
119: Process water discharge nozzle
120: Microbial reaction tank
121: first opening
122: second opening
125: Foam spray
130: Concentration tank
132: Sulfur discharge nozzle
140: Aeration unit 150: Air remover
152: suction part
153: partition
154: body
156: legs
158: Air discharge nozzle
160: Air supply pipe
161: diffuser plate
170: Blower for air supply
180: heat exchanger
190: Manhole
192: lifting lug
193: Gori Hall
194: Fastening member
195: Absence of confidentiality
196: Anchor bracket
197: Anchor Hall
200: Process water supply pipe
210: handrail
220: Process water pump
230: Nutrient injection means
240: Electrical control panel
250: Alkaline solution injection means

Claims (9)

An absorption tower in which biogas flows into the bottom and is discharged to the top, and the biogas and process water come into contact with each other to discharge process water in which hydrogen sulfide in the biogas has been absorbed to the bottom.
A microbial reactor in which process water in which hydrogen sulfide discharged from the lower part of the absorption tower is absorbed is converted into biosulfur by sulfating microorganisms and recycled into process water that can be supplied to the absorption tower;
A concentrator installed inside the microbial reactor to concentrate the biosulfur produced in the microbial reactor and discharge it to the outside;
an aeration unit installed inside the microbial reactor and having an air supply pipe for supplying air for aeration into the microbial reactor; and
An air remover installed inside the microbial reactor and removing air remaining in the microbial reactor,
The microbial reactor includes a first opening at the top into which an absorption tower is inserted and a second opening into which a concentration tank is inserted,
The absorption tower is formed in the form of a cylindrical column in which the upper and lower parts are flange-joined based on the absorption tower flange, and the lower part is inserted and fixed into the microbial reaction tank, and the lower end of the absorption tower gradually becomes thinner toward the tip and has an inclined lower side. A plurality of process water discharge nozzles are installed in the absorption tower, and the absorption tower includes a process water injection mechanism for spraying process water into the absorption tower and a packing layer filled with filler,
The enrichment tank is formed as a cylindrical column-shaped storage tank, with additional columns installed inside, and the lower end gradually tapers toward the tip and is formed in an eccentric shape,
The aeration unit further includes an air supply blower connected to the air supply pipe and operating to supply air, and the air supply pipe includes a blocking valve for each branch pipe installed to clean the interior and supply air equally to each branch pipe, A biogas pretreatment device further including a diffuser plate at the bottom of the air supply pipe that turns the air for aeration into fine bubbles.
delete delete delete According to paragraph 1,
The microbial reactor is,
A manhole formed in the lower part of one side through which users can enter and exit for internal inspection or repair work;
A lifting lug installed to protrude outward from the upper part of one side for traction; and
It further includes an anchor bracket installed at the lower edge of the microbial reactor to securely install the microbial reactor,
An airtight member is laminated to each of the lifting lug and the anchor bracket to maintain airtightness of the microbial reactor,
A biogas pretreatment device, characterized in that it further includes a handrail installed at the top to prevent the user from falling.
delete The biogas pretreatment device according to claim 1, wherein the biogas pretreatment device is made of glass fiber reinforced plastic (FRP).
delete According to paragraph 1,
The biogas pretreatment device,
a process water pump connected to the microbial reactor to circulate process water;
Nutrient injection means for injecting nutrients into the circulating process water;
Injection means for injecting an alkaline solution into the circulating process water;
Heat exchanger to remove reaction heat; and
An electric control panel that controls the operation of the process water pump, the alkaline solution injection means, the nutrient injection means, and the heat exchanger;
A biogas pretreatment device, characterized in that it further comprises a.