KR20230101066A - Desulfurization and refinement apparatus for heat/power generation of biogas - Google Patents

Abstract

According to an embodiment of the present invention, in the gas purifier for cogeneration of biogas, when the cooling/heating energy of the facility house is needed in a system in which generated heat is supplied to the facility house through a heat absorption type chiller/heater, the generator is operated to By absorbing energy as electricity and heat, and otherwise recovering energy in the form of gas by producing biomethane through the upgrading system, it is possible to actively cope with emergency situations and to fully utilize the energy of biogas.

Description

Gas purification device for cogeneration of biogas {DESULFURIZATION AND REFINEMENT APPARATUS FOR HEAT/POWER GENERATION OF BIOGAS}

The present invention relates to gas purification for thermoparallel power generation of biogas, and more particularly, in a system in which power generation heat is supplied to a facility house through a heat absorption chiller/heater, when cooling/heating energy of the facility house is required, a generator is operated. to absorb energy as electricity and heat, and otherwise recover energy in the form of gas by producing biomethane through the upgrading system so that it can actively cope with emergency situations and fully utilize the energy of biogas. It relates to a gas purification device for cogeneration of gas.

In general, manure wastes generated from pig farming, livestock farming, and poultry farms and food wastes generated in urban areas are not only expensive to treat, but also lack organic waste treatment facilities.

In particular, small-scale small-scale livestock farms or small-scale restaurants do not have the ability to install a waste treatment device, so there is a problem that they are mixed with general household waste, and even if they are separated and disposed of, the collection company has to send them back to a professional treatment company for disposal.

Meanwhile, countries around the world are making various efforts to reduce greenhouse gases. For example, wastes containing a large amount of organic matter such as food waste, livestock wastewater, and urban wastewater are not incinerated, but are treated through landfill, ocean dumping, or public treatment.

More specifically, for example, about 5,500 tons of food wastewater, about 7,000 tons of livestock manure, and about 9,500 tons of sewage/wastewater, that is, about 22,000 tons of organic matter per day as a whole. Waste is being disposed of through dumping at sea.

However, since ocean dumping is prohibited due to the London Convention and landfilling is expected to become increasingly difficult for environmental reasons, in the future, a large amount of waste will have no choice but to be treated through public treatment, and there are many devices and devices to treat it. It is in the process of being developed.

Furthermore, there is a trend that devices and devices that generate power using biogas generated at this time are also continuously being developed. In general, organic waste such as manure waste and food waste is treated by an anaerobic digestion method by fermentation.

Manure waste and food waste have the characteristics of producing high-concentration biogas by desulfurization purification and oil-water separation of methane gas generated in the digestion process.

However, although devices and devices for generating power using such biogas are continuously being developed, these devices and devices use the configuration of a conventional internal combustion engine as it is.

Therefore, the cooling performance of the intercooler unit is not kept constant, and the heat exchanger unit does not perform double heat exchange, so heat from the exhaust gas is wasted. there was.

In addition, when the medium-temperature water is heated, components of the gas purifier for cogeneration are damaged or damaged, resulting in increased maintenance costs and reduced stability and reliability of the cogeneration system.

Republic of Korea Patent Publication 10-2010-0105938

An object of the present invention is to solve this problem, and in a system in which generated heat is supplied to a facility house through a heat absorption type chiller/heater, when cooling/heating energy of the facility house is needed, a generator is operated to convert energy into electricity and heat. If not, biomethane is produced through the upgrading system to recover energy in the form of gas, enabling active response to emergency situations and fully utilizing the energy of biogas. Gas purification for cogeneration of biogas device is provided.

A gas purification device for cogeneration of biogas according to an embodiment of the present invention for achieving the above object includes a desulfurization unit connected to a gas storage tank to remove hydrogen sulfide from biogas stored in the gas storage tank; a dehumidifying unit for removing moisture in the biogas that has passed through the desulfurization unit; a siloxane removing unit for removing siloxane from the biogas that has passed through the dehumidifying unit; It may be characterized by having a; gas concentrating unit for increasing the concentration of methane by removing carbon dioxide from the biogas passing through the siloxane removal unit.

In addition, a valve unit installed between the SCR and the exhaust gas heat exchange unit on the exhaust gas discharge line; a hot water temperature sensor installed on the hot water supply line and the hot water recovery line to measure the temperature of the hot water flowing through the hot water supply line and the hot water recovery line; and a bypass line having one side connected to the valve unit and the other side connected to the exhaust gas discharge line between the exhaust gas heat exchange unit and the noise reduction unit.

In addition, the dehumidifying unit includes a cooling unit for dissipating heat into the air by passing through the biogas discharged from the desulfurization unit, a cooling water spraying unit for spraying cooling water to the cooling unit, and the cooling water spraying unit. In order to recover the cooling water sprayed from the cooling unit, a cooling water recovery tank is installed below the cooling unit, and the cooling water unit is connected to the desulfurization unit and includes a gas inlet pipe through which biogas discharged from the desulfurization unit flows, and A gas discharge pipe installed in parallel with the gas inlet pipe and through which biogas is discharged, one side connected to the gas inlet pipe and the other side connected to the gas discharge pipe, and a plurality of heat exchanges through which the biogas introduced into the gas inlet pipe passes It may be characterized in that it is provided with a support frame for supporting the tubes and the heat exchange tubes bent in a certain pattern so that the path of the biogas passing through the heat exchange tubes can be lengthened.

According to an embodiment of the present invention, in the gas purifier for cogeneration of biogas, when the cooling/heating energy of the facility house is needed in a system in which generated heat is supplied to the facility house through a heat absorption type chiller/heater, the generator is operated to By absorbing energy as electricity and heat, and otherwise recovering energy in the form of gas by producing biomethane through the upgrading system, it is possible to actively cope with emergency situations and to fully utilize the energy of biogas.

In addition to the effects described above, specific effects of the present invention will be described together while explaining specific details for carrying out the present invention.

1 is a block diagram showing the configuration of a gas purification device for cogeneration of biogas according to an example of the present invention.
2 is a configuration diagram showing a desulfurization unit applied to FIG. 1;
FIG. 3 is a configuration diagram illustrating a dehumidifying unit applied to FIG. 1 .
Figure 4 is a perspective view of the main part of Figure 3 extracted.

Hereinafter, the operating principle of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, if it is determined that a detailed description of a known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of a user or operator. Therefore, the definition should be made based on the contents throughout this specification.

1 is a block diagram showing the configuration of a gas purification device for cogeneration of biogas according to an example of the present invention.

2 is a configuration diagram showing a desulfurization unit applied to FIG. 1;

FIG. 3 is a configuration diagram illustrating a dehumidifying unit applied to FIG. 1 .

Figure 4 is a perspective view of the main part of Figure 3 extracted.

Hereinafter, with reference to FIGS. 1 to 4 , an operation of a gas purifying apparatus for cogeneration of biogas according to an embodiment of the present invention will be described in more detail.

The gas purification device for cogeneration of biogas of the present invention is connected to a gas storage tank (1) and includes a desulfurization unit (10) for removing hydrogen sulfide in biogas stored in the gas storage tank (1) and a desulfurization unit (10). Passing through the dehumidifying unit 40 for removing moisture in the passing biogas, the siloxane removing unit 60 for removing siloxane in the biogas that has passed through the dehumidifying unit 40, and the siloxane removing unit 60 A gas concentrating unit 80 is provided to increase the concentration of methane by removing carbon dioxide from one biogas.

A certain amount of biogas is stored in the gas storage tank 1. Biogas is generated during anaerobic digestion of organic waste such as food, livestock manure, and sewage sludge. The biogas stored in the gas storage tank 1 contains impurities such as hydrogen sulfide, moisture, siloxane, and carbon dioxide in addition to methane. The biogas stored in the gas storage tank 1 passes through the desulfurization unit 10, the dehumidification unit 40, the siloxane removal unit 60, and the gas concentrating unit 80 sequentially to sequentially remove hydrogen sulfide, moisture, siloxane, and carbon dioxide. do.

The desulfurization unit 10 is connected to the gas storage tank 1 and serves to remove hydrogen sulfide from biogas stored in the gas storage tank 1.

The shown desulfurization unit 10 is connected to the gas storage tank 1 and sprays a scrubber 11 into which biogas flows and a liquid catalyst into the scrubber 11 to contact hydrogen sulfide in the biogas with the liquid catalyst to remove hydrogen sulfide. From a liquid catalyst injection means for generating solid sulfur, a circulation tank 15 in which the liquid catalyst injected into the scrubber 11 by the liquid catalyst injection means is introduced and stored together with solid sulfur, and a circulation tank 15 A regeneration means for regenerating the used catalyst in the introduced liquid catalyst and supplying the liquid catalyst to the liquid catalyst injection means is provided.

The scrubber 11 has an inlet 12 through which biogas flows in at the bottom and an outlet 13 through which biogas is discharged at the top. The inlet 12 is connected to the gas storage tank 1 so that biogas is introduced. The biogas introduced into the scrubber 11 through the inlet 12 moves upward inside the scrubber 11 and is discharged to the outside through the outlet 13. Inside the scrubber 11, a demister 14 may be installed to remove moisture in the biogas discharged to the outside.

The liquid catalyst injection unit includes a catalyst storage tank 21 in which the liquid catalyst is stored, a catalyst supply pipe 22 connected to the catalyst storage tank 21 and moving the liquid catalyst by a circulation pump 23, and the inside of the scrubber 11 A plurality of injection nozzles 23 installed vertically apart from each other and spraying the liquid catalyst supplied through the catalyst supply pipe 22 into the scrubber 11, and a catalyst storage tank 23 for supplying the liquid catalyst. A catalyst replenishment tank 25 is provided.

A certain amount of liquid catalyst is stored in the catalyst storage tank 21 . The liquid catalyst uses the solubility of the gas and the oxidation-reduction reaction of the catalyst to remove gas components, and the catalyst is regenerated and circulated, so no wastewater is generated.

Liquid catalysts usually use metal catalysts to promote oxidation, and these metal ions have affinity and oxide metal ions oxidize sulfur ions in aqueous solution, themselves are reduced, and oxidation-reduction reactions are oxidized again by oxygen. catalyzed by

In particular, iron chelate using ferrous metal as a liquid catalyst is a method using the solubility of sulfide gas in water and the principle of oxidation reduction of iron chelate compounds. Due to its low cost, it has recently been applied in various industrial fields.

Preferably, the liquid catalyst uses iron as a catalytic metal. Iron (Fe) oxidizes sulfur in an aqueous solution, itself is reduced, and catalyzes an oxidation-reduction reaction in which iron (Fe) is oxidized again by oxygen. Such iron has the advantage of being non-toxic and harmless to the environment.

An example of such a liquid catalyst includes an iron salt that dissolves in water to generate iron (Fe) ions, and a chelating agent that binds to iron ions.

There is no limitation on the type of iron salt as long as it is a material that can dissolve in water to form iron ions. For example, as an iron salt, any one selected from Fe(NO3)3, FeCl, and FeSO4 may be used.

Any one selected from nitrilotriacetate (NTA), ethylenediaminetetraacetate (EDTA), and hydroxyiminodisuccinic acid (HIDS) may be used as the chelating agent. Chelating agents form iron ions and stable iron chelate compounds (Fe-EDTA, Fe-NTA, Fe-HIDS).

The liquid catalyst stored in the catalyst storage tank 21 is pumped by the circulation pump 33 and supplied to the injection nozzle 23 . The liquid catalyst injected into the scrubber 11 through the injection nozzle 23 contacts biogas, and in this process, hydrogen sulfide contained in the biogas is removed.

The circulation tank 15 is installed below the scrubber 11. The liquid catalyst sprayed into the scrubber 11 and contacted with the biogas flows downward and enters the circulation tank 15 and is stored.

The liquid catalyst flowing into the circulation tank 15 contains solid sulfur generated in the process of removing hydrogen sulfide. The liquid catalyst stored in the circulation tank (15) is moved to the catalyst storage tank (21). And the solid sulfur in the circulation tank (15) is discharged to the intermediate storage tank (17) together with some of the liquid catalyst.

The regeneration means regenerates the liquid catalyst introduced into the catalyst storage tank 21 from the circulation tank 15.

The regeneration means is composed of a blower 31 and a diffusion tube 33 connected to the blower 31 and installed in the catalyst storage tank 21. By the operation of the blower 31, air is aerated into the liquid catalyst through the diffuser 33. The aerated air regenerates the liquid catalyst by oxidizing iron in the liquid catalyst.

A filter 35 is further provided to remove sulfur particles in the liquid catalyst stored in the intermediate storage tank 17. As the filter 35, various types of solid-liquid separators such as a filter press, a belt press, a centrifugal separator, a dehydrator, and a fibrous filter may be used. Sulfur particles filtered by the filter 35 are collected, and the filtrate passing through the filter 35 is introduced into the catalyst storage tank 21 again.

The biogas that has passed through the above-described desulfurization unit 10 is dehumidified while passing through the dehumidification unit 40 . On the other hand, the above-described desulfurization unit is described as removing hydrogen sulfide in biogas by a liquid catalyst, but it is of course possible to use various types of chemicals or drugs that can remove hydrogen sulfide. In addition, of course, it is possible to use a liquid catalyst, chemicals, or process water containing chemicals.

The dehumidifying unit includes a cooling unit 41 for dissipating heat into the atmosphere by passing through the biogas discharged from the scrubber 11, a cooling water spraying unit for spraying cooling water to the cooling unit 41, and cooling water. A cooling water recovery tank 51 installed below the cooling unit 41 is provided to recover the cooling water sprayed from the injection unit.

The cooling unit 41 is connected to the outlet 13 of the scrubber 11 and has a gas inlet pipe 43 through which biogas flows, and a gas discharge pipe installed parallel to the gas inlet pipe 43 and through which biogas is discharged ( 45), one side is connected to the gas inlet pipe 43 and the other side is connected to the gas discharge pipe 45, a plurality of heat exchange tubes 47 through which the biogas introduced into the gas inlet pipe 43 passes, A support frame 49 is provided to bend and support the heat exchange tubes 47 in a predetermined pattern so that the path of the biogas passing through the exchange tubes 47 can be lengthened.

The gas inlet pipe 43 is connected to the outlet 13 of the scrubber 11 by a first connection pipe 42. A condensate discharge pipe 44 is provided in the gas inlet pipe 43 so that condensed water can be discharged. The gas discharge pipe 45 is connected to the siloxane removal unit 60 through a second connection pipe 59. A condensate discharge pipe (not shown) is provided in the gas discharge pipe 45 so that condensed water can be discharged.

The gas inlet pipe 43 and the gas discharge pipe 45 are installed inside the cooling water recovery tank 51. The heat exchange tube 47 is formed in the form of a flexible metal corrugated tube to increase the contact area with the outside air. A plurality of heat exchange tubes 47 are installed. One side of each heat exchange tube 47 is connected to the gas inlet pipe 43 and the other side is connected to the gas outlet pipe 45.

The heat exchange tube 47 is installed in a structure suspended in the air by a support frame 49. Therefore, the biogas passing through the heat exchange tube 47 is cooled while exchanging heat with the outside air.

The support frame 49 is composed of a plurality of posts 49a erected at a certain height and a plurality of transverse pipes 49b connecting the posts 49a in a horizontal direction.

The heat exchange tube 47 is installed in a structure suspended in the air by a support frame 49. Therefore, the biogas passing through the heat exchange tube 47 is cooled while exchanging heat with the outside air.

The support frame 49 is composed of a plurality of posts 49a erected at a certain height and a plurality of transverse pipes 49b connecting the posts 49a in a horizontal direction.

The heat exchange tube 47 is installed so as to be bent in a zigzag shape while spanning the transverse pipes 49b. Therefore, the path of the biogas passing through the heat exchange tubes 47 is lengthened, so that the cooling efficiency can be increased.

The cooling water spray unit includes a pump 53 for pumping the cooling water stored in the cooling water recovery tank 51 and a cooling water spray nozzle 55 connected to the pump 53 and spraying the cooling water from above the cooling unit 41. .

When the pump 53 operates, the cooling water is sprayed downward through the cooling water spray nozzle 55 . The cooling water sprayed downward is heat exchanged while contacting the heat exchange tube 47. Then, the cooling water in contact with the heat exchange tube 47 falls downward and flows into the cooling water recovery tank 51 .

Since the above-described dehumidifying unit 40 cools the biogas by a hybrid method in which an air-cooling type and a water-cooling type are combined, the dehumidifying effect is excellent. Siloxane is removed from the biogas that has passed through the dehumidifier 40 in the siloxane removal unit 60.

The siloxane removal unit 60 includes first and second reactors 61 and 63 in which a silica gel layer 65 filled with silica gel and an activated carbon layer 66 filled with activated carbon are installed, and a dehumidifying unit 40 Connected to, the biogas discharged from the dehumidifying unit 40 is selectively introduced into any one of the first and second reactors 61 and 63 to sequentially pass through the silica gel layer 65 and the activated carbon layer 66 It is connected to the first and second reaction towers (61, 63) to desorb the gas oil intake terminal and the siloxane adsorbed on the surface of the silica gel and activated carbon, It is provided with a regeneration means for selectively introducing hot air into one and introducing hot air into other reactors except for the reactor into which biogas is introduced.

The gas inlet means is a blower 67 connected to the second connection pipe 59 of the dehumidifying unit 40 to blow biogas, and a blower 67 connected to the discharge side of the blower 67 so that the biogas blown from the blower 67 The transported main gas supply pipe 68 and the main gas supply pipe 68 are branched and connected to the lower part of the first reactor 61, and biogas is introduced into the silica gel layer 65 of the first reactor 61 It is branched from the first sub-gas supply pipe 69 and the main gas supply pipe 68 and connected to the lower part of the second reactor 63, and the biogas is passed through the silica gel layer 65 of the second reactor 63. a second sub-gas supply pipe 71 through which the gas is introduced, and first and second valves 72 and 73 respectively installed on the first and second sub-gas supply pipes 69 and 71.

And the regeneration means is a hot air blower 74 that generates hot air, a main hot air supply pipe 75 extending from the hot air machine 74 and transporting the hot air generated by the hot air machine 74, and branching from the main hot air supply pipe 75 to A first sub hot air supply pipe 76 connected to the first reaction tower 61 and introducing hot air into the gap between the silica gel layer 65 and the activated carbon layer 64 of the first reaction tower 61, and the main hot air supply A second sub hot air supply pipe that branches from the pipe 75 and is connected to the second reactor 63 and introduces hot air into the spaced gap between the silica gel layer 65 and the activated carbon layer 66 of the second reactor 63 77, and first and second valves 78 and 79 installed in the first and second sub hot air supply pipes 76 and 77, respectively.

In one embodiment of the present invention, the cogeneration system 100 using another biogas also includes the biogas supply line 1, the exhaust gas discharge line 2, the supercharging unit 3, and the gas mixing unit as described above ( 5), an intercooling unit 6, an engine unit 7, an engine unit 8, and a control unit 9.

The biogas supply line 1 supplies biogas produced in a separate biogas processing unit. That is, biogas generated by digesting organic waste in an anaerobic digestion tank is supplied through a biogas supply line (1).

The dehumidifier 10 is installed on the biogas supply line 1 to remove moisture from the biogas. When biogas is generated by combustion through an anaerobic digester, as the temperature and pressure decrease or increase, water vapor in the biogas is condensed in the biogas supply line (1) and liquid condensate accumulates, resulting in overall efficiency of the cogeneration system will drastically decrease. When this condensate accumulates, it is deposited on the wall of the biogas supply line (1) and reduces the effective space, resulting in pressure loss, which destabilizes the gas flow and hinders the stable operation of the cogeneration system. That is, the dehumidifier 10 is an essential step in the biogas pretreatment process, and removes moisture inside the biogas through various methods and supplies it through the biogas supply line 1, thereby maximizing the efficiency of the cogeneration system. .

The backfire prevention unit 11 is installed between the dehumidifying unit 10 and the gas mixing unit 5 on the biogas supply line 1 to prevent backfire of the biogas. That is, the backfire prevention unit 11 controls the negative pressure so that the biogas from which moisture is removed is negatively pressured when supplied through the biogas supply line 1, so that the flame backfires and explosion does not occur. Prevents explosion due to backfire do.

The gas filter unit 12 is installed between the backfire prevention unit 11 and the gas mixing unit 5 on the biogas supply line 1 to filter the biogas passing through the backfire prevention unit 11. That is, the gas filter unit 12 filters impurities in the biogas supplied through the biogas supply line 1 and supplies them to the gas mixing unit 5 to reduce maintenance costs and reduce engine unit 7. efficiency can be increased.

The gas pressure control unit 13 is installed between the gas filter unit 12 and the gas mixing unit 5 on the biogas supply line 1 to adjust the pressure of the biogas passing through the gas filter unit 12. That is, the gas pressure control unit 13 maintains a constant pressure by reducing or pressurizing the biogas so that the pressure of the biogas passing through the gas filter unit 12 does not exceed the reference pressure under the control of the control unit 9. It is supplied to the gas mixing unit 5 in one state to increase energy efficiency and increase stability and reliability of the cogeneration system.

As shown in FIG. 2, the combined heat and power system 100 using biogas according to another embodiment of the present invention includes a gas pressure adjusting unit 13 and a gas mixing unit 5 on a biogas supply line 1 An emergency valve unit 14 installed between them may be further included.

The emergency valve 14 passes through the gas pressure control unit 13 and is supplied through the biogas supply line 1 when the temperature and pressure of the biogas exceeds the reference temperature or pressure, or when impurities exceed a predetermined amount. When exceeded, it is operated by a signal from the control unit 9 to close the flow path from the biogas supply line 1 to the gas mixing unit 5. Accordingly, the supply of fuel from the gas mixing unit 5 to the engine unit 7 is cut off to prevent safety accidents in advance, thereby preventing personal accidents and maximizing safety and reliability of the cogeneration system.

The supercharger 3 compresses and supplies the exhaust gas on the exhaust gas discharge line. In addition, the turbocharger 3 compresses the air introduced from the outside and supplies it to the gas mixing unit 5. The output of the engine unit 7 is maximized by the supercharging unit 3, so that energy efficiency and overall efficiency are increased.

The gas mixing unit 5 mixes the compressed air supplied through the supercharging unit 3 and the external air introduced through the air filter unit 4. External air that has passed through the air filter unit 4 has impurities removed, thereby increasing the efficiency of the engine unit 7 using the mixed gas as fuel.

The intercooler unit 6 cools the mixed gas mixed through the gas mixing unit 5 . That is, in the intercooler unit 6, the combustion efficiency of the engine unit 7 is reduced when the temperature of the mixed gas increases through the supercharger unit 3 and is supplied to the engine unit 7 in a high temperature state for combustion. In order to prevent the engine part 7 from being damaged or damaged due to overheating, the high-temperature mixed gas is cooled to increase the density of the mixed air and the mixed gas maintained at a constant temperature flows into the engine part 7 It performs the function of cooling the temperature of the mixed gas so that it can be

The second circulation pump unit 42 is installed on the second cooling line 41 to circulate the cooling water flowing inside the second cooling line. As shown in FIGS. 2 and 3, the first and second cooling units 20 and 40 and the first and second circulations for cooling the intercooler unit 6 and the engine unit 7 are not limited thereto. The pump units 22 and 42 are disposed at the upper end of the engine unit 7 to facilitate connection with the first and second cooling lines 21 and 41, respectively.

That is, as shown in FIG. 3 , in the enclosure housing of the cogeneration system 100 using biogas, the intercooler unit 6 in which the first and second circulation pump units 22 and 42 are disposed on top of the engine unit 7 ) and the engine part 7 are directly connected to the first and second cooling lines 21 and 41 to cool them when the intercooler part 6 and the engine part 7 overheat, the cooling is completed and the heated coolant Pipes can be easily connected to the first and second cooling units 20 and 40 disposed above the enclosure. Therefore, the combined heat and power system 100 using biogas according to the present invention promotes miniaturization by optimization to increase the ease of installation and installation convenience, and prevents waste of resources by increasing the penetration rate by reducing manufacturing and installation costs and can protect the environment.

Although not necessarily limited thereto, the first cooling unit 20 and the second cooling unit 40 may include radiators. This radiator is a water-cooled type with a fin and tube structure. The inner core is composed of a cooling water tube, which is a passage through which the cooling water circulates, and a cooling fin between the tubes to efficiently dissipate the heat of the cooling water, and the thermal conductivity is It is formed of a copper tube and an aluminum cooling fin. In order to form a structure in which cooling water is introduced and discharged, a cooling line is connected to a nozzle attached to the rear end of the radiator so that the circulation pump is circulated by driving. Since these radiators continuously discharge heat to the outside by a fan, they are installed to be disposed on the outside of the top of the enclosure.

In addition, the control unit 9 controls the first cooling unit 20 and the first circulation pump unit 22 so that the cooling water circulating through the first cooling line 21 is lower temperature than the cooling water circulating through the second cooling line 41. ) and controls the operation of the second cooling unit 40 and the second circulation pump unit 42. Accordingly, the efficiency of the cogeneration system 100 is increased, unnecessary waste of energy is prevented, and heating can be performed by hot water discharged through the exhaust gas heat exchanger 32 to be described later.

As described above, according to an embodiment of the present invention, in the gas purifier for cogeneration of biogas, when the cooling/heating energy of the facility house is needed in a system in which the heat generated is supplied to the facility house through a heat absorption type chiller/heater. , By operating a generator to absorb energy in the form of electricity and heat, and otherwise recovering energy in the form of gas by producing biomethane through the upgrading system, it is possible to actively cope with emergency situations and fully utilize the energy of biogas. make it possible

As described above, the present invention has been described with reference to the drawings illustrated, but the present invention is not limited by the embodiments and drawings disclosed in this specification, and various modifications are made by those skilled in the art within the scope of the technical idea of the present invention. It is obvious that variations can be made. In addition, although the operational effects according to the configuration of the present invention have not been explicitly described and described while describing the embodiments of the present invention, it is natural that the effects predictable by the corresponding configuration should also be recognized.

1: biogas supply line,
3: supercharged department,
5: gas mixing unit,
2: exhaust gas discharge line,
4: air filter unit,
6: intercooler unit,
7: engine part,
9: control unit,
11: backfire prevention unit,
13: gas pressure control unit,
20: first cooling unit,
22: first circulation pump unit,
31: SCR,
33: noise reduction unit,

Claims (3)

As a gas purification device for cogeneration of biogas,
A desulfurization unit connected to the gas storage tank to remove hydrogen sulfide from the biogas stored in the gas storage tank; a dehumidifying unit for removing moisture in the biogas that has passed through the desulfurization unit;
a siloxane removing unit for removing siloxane from the biogas that has passed through the dehumidifying unit;
A gas purification device for combined heat and power generation of biogas, characterized in that it has a; gas concentrating unit for increasing the concentration of methane by removing carbon dioxide in the biogas that has passed through the siloxane removal unit. According to claim 1,
a valve unit installed between the SCR and the exhaust gas heat exchange unit on the exhaust gas discharge line;
a hot water temperature sensor installed on the hot water supply line and the hot water recovery line to measure the temperature of the hot water flowing through the hot water supply line and the hot water recovery line; and
One side is connected to the valve unit, and the other side is a bypass line installed between the exhaust gas heat exchange unit and the noise reduction unit to be connected to the exhaust gas discharge line; heat and power generation of biogas, characterized in that it further comprises Gas purification equipment for power generation. According to claim 2,
The dehumidifying unit includes a cooling unit for dissipating heat into the air by passing through the biogas discharged from the desulfurization unit, a cooling water spray unit for spraying cooling water to the cooling unit, and a cooling water spray unit for spraying. A cooling water recovery tank installed at the bottom of the cooling unit to recover the cooled water,
The cooling water unit has a gas inlet pipe connected to the desulfurization unit and through which biogas discharged from the desulfurization unit flows, a gas discharge pipe installed parallel to the gas inlet pipe and through which biogas is discharged, and one side of the gas inlet pipe A plurality of heat exchange tubes connected to and the other side connected to the gas discharge pipe through which the biogas introduced into the gas inlet pipe passes, and the heat exchange tubes are fixed so that the path of the biogas passing through the heat exchange tubes can be lengthened A gas purification device for combined heat and power generation of biogas, characterized in that it comprises a support frame that is curvedly supported in a pattern.

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