KR102525307B1 - Operating method for biogas heat capacity control plant - Google Patents

Abstract

The present invention operates a biogas calorific value adjustment plant to produce a biomixed gas that satisfies the quality standards of city gas (NG, Natural Gas) from biomethane obtained by refining biogas extracted from organic waste with high purity, and supply it to a designated customer. It's about how.

Description

Operation method of biogas heat control plant {OPERATING METHOD FOR BIOGAS HEAT CAPACITY CONTROL PLANT}

The present invention relates to a method for producing a biomixed gas that satisfies the quality standards of natural gas (NG) from biomethane obtained by refining biogas extracted from organic waste with high purity, and supplying it to a designated customer.

Due to high global oil prices and global warming, many experts and companies are investing in securing clean energy sources that can sustain power generation, and among them, renewable energy sources are receiving the most attention.

Biogas, one of these renewable energy sources, is energy generated by the conversion of biomass resources such as livestock manure and organic waste such as food waste, and carbon-neutral energy that is emitted by energy use after inhaling carbon dioxide in the atmosphere. It is a circle.

In this regard, recently, as the population increases and income rises, the amount of organic waste such as food waste increases together. is receiving great attention.

However, biogas has a low methane content of almost half that of natural gas and has many impurities, so it can only be used for limited purposes such as power generation and boiler fuel. Rather than simple use of the furnace, it is necessary to prepare a utilization plan accompanied by an additional process such as increasing the methane content.

The present invention has been created in view of the above circumstances, and an object to be reached in the present invention is to satisfy the quality standards of city gas (NG, Natural Gas) from biomethane obtained by highly purified biogas extracted from organic waste. It is to manufacture bio-mixed gas and supply it to designated customers.

A biogas calorific value adjustment plant according to an embodiment of the present invention for achieving the above object includes a gas purification facility for purifying biogas extracted from organic waste and converting it into biomethane having a designated methane (CH4) purity; Calorie adjustment facility for producing a bio-mixed gas that satisfies the quality standard of city gas (NG, natural gas) from the biomethane by mixing component compensation gas with the biomethane; and a gas that directly introduces the bio-mixed gas into a local city gas pipe network according to the designation of a demand source for the bio-mixed gas or transfers the bio-mixed gas to a vehicle charging facility that uses the bio-mixed gas as a vehicle fuel. It is characterized in that it includes a supply facility.

Specifically, the calorie adjustment facility calculates the flow rate for the component compensation gas according to the component adjustment value calculated for the component value of the biomethane based on the target component value set for the biomixture gas, By vaporizing component compensation gas equal to the calculated flow rate, the vaporized component compensation gas may be inserted into the biomethane.

Specifically, the gas supply facility injects an odorant according to the production flow rate of the biomixed gas when the component values of the biomixed gas satisfy the target component values, and the biomixed gas into which the odorant is injected. The supply line can be routed so that it is transported to a city gas pipe network or a vehicle charging facility.

Specifically, when the biogas calorie adjustment plant receives a sensor data-based data processing request from a client operating device that supports HMI (Human-Machine Interface)-based facility operation in each facility in the biogas calorie adjustment plant, In addition, it may further include a master operating device that processes an arithmetic function for sensor data through a previously installed gas facility management application and returns a result of processing the arithmetic function to each client operating device.

Specifically, the gas facility management application is installed in an edge cloud site (MEC Site) formed within a set distance from the offline location of the biogas calorific value adjustment plant, and the master operating device is installed in the gas facility installed in the edge cloud site. Sensor data may be transmitted to the gas facility management application through session formation with the management application, and a processing result of an arithmetic function for the sensor data may be obtained from the gas facility management application.

Specifically, the gas facility management application includes two or more application instances to support traffic distribution at the edge cloud site, and the master operating device includes a new session for each of the client operating devices. If formation is required, continuity of context information, which is a history of processing of calculation functions for each client operating device, can be maintained by forming a new session with the same application instance as in the previous session for each client operating device.

Specifically, when a new session formation for each of the client operating devices is requested, the master operating device transmits the previous source address, which is the source address assigned in the previous session establishment process, to each client operating device in a signaling message for a new session. By inserting, it is possible to form a new session with the same application instance as the previous session according to the previous source address in the signaling message at the edge cloud site.

Specifically, the edge cloud site, if the previous source address in the signaling message exists in the session management information based on session management information about the session formation history of the master operating device, the previous source address on the session management information. It is possible to support the establishment of a new session with the specific application instance by checking a specific application instance recorded by matching the address.

In order to achieve the above object, a method of operating a biogas calorific value adjustment plant according to an embodiment of the present invention purifies biogas extracted from organic waste and refines it into biomethane having a designated methane (CH4) purity. Gas purification step; Calorie adjustment step of mixing the biomethane with a component compensation gas to prepare a biomixed gas that satisfies the quality standard of city gas (NG, Natural Gas) from the biomethane; and a gas that directly introduces the bio-mixed gas into a local city gas pipe network according to the designation of a demand source for the bio-mixed gas or transfers the bio-mixed gas to a vehicle charging facility that uses the bio-mixed gas as a vehicle fuel. A supply step may be included.

Specifically, the method, when a data processing request based on sensor data is received from a client operating device supporting HMI (Human-Machine Interface)-based facility operation in each facility in the biogas calorific value adjustment plant, the previously installed gas An operation support step of processing an operation function for sensor data through a facility operation application and returning an operation function processing result to each client operation device may be further included.

Accordingly, according to the operating method of the biogas calorie adjustment plant of the present invention, biomixed gas that meets the quality standards of natural gas (NG) is produced from biomethane obtained by refining biogas extracted from organic waste to a high purity. As an environment that can be supplied to designated demand sources is prepared, the utilization of biogas converted from biomass resources can be greatly improved.

1 is a schematic configuration diagram for explaining a biogas calorie adjustment plant according to an embodiment of the present invention.
Figure 2 is a schematic configuration diagram for explaining a gas purification facility according to an embodiment of the present invention.
Figure 3 is a schematic configuration diagram for explaining a calorie adjustment facility according to an embodiment of the present invention.
Figure 4 is a schematic configuration diagram for explaining a gas supply facility according to an embodiment of the present invention.
5 is a schematic configuration diagram for explaining a master operating device according to an embodiment of the present invention.
Figure 6 is a schematic flow chart for explaining the operating method of the biogas calorific value adjustment plant according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

In one embodiment of the present invention, a technology for operating a biogas-based energy supply plant, which is one of renewable energy sources, is dealt with.

Biogas, one of the renewable energy sources, is an energy source generated by the conversion of biomass resources such as livestock manure and organic waste such as food waste. The plan is getting a lot of attention.

However, biogas has a low methane content of almost half that of natural gas and has many impurities, so it can only be used for limited purposes such as power generation and boiler fuel. Rather than simple use of the furnace, it is necessary to prepare an active utilization plan accompanied by an additional process such as increasing the methane content.

In this regard, in one embodiment of the present invention, a method of utilizing biomethane, which is a high-quality gas obtained by increasing the methane content of biogas and removing impurity gases, is considered rather than simply using biogas itself.

Biomethane has a methane concentration of 97% or more, an oxygen/nitrogen concentration of 3% or less, and H2S and siloxane are within the limits, reaching a level that can be used as it is in gas ranges and boilers currently used in homes.

However, in the case of biomethane, impurities are removed and the methane content is increased compared to biogas, improving its utilization. However, it is used as a general-purpose energy source in all fields, including domestic, commercial, and industrial use, as well as fuel for power generation in Korea. The quality level of natural gas (NG) is still not reached.

Therefore, in one embodiment of the present invention, a biomixed gas that meets the quality standards of natural gas (NG) is prepared from biomethane obtained by refining biogas extracted from organic waste in accordance with the above limitations to a high purity, and the designated demand destination We would like to propose a plan for supplying

In this regard, FIG. 1 exemplarily shows the configuration of a biogas calorie adjustment plant according to an embodiment of the present invention.

As shown in Figure 1, the biogas calorific value adjustment plant according to an embodiment of the present invention, a gas purification facility 100 for upgrading biogas to biomethane, biomixed gas with improved quality of biomethane It may have a configuration including a calorie adjustment facility (200) for manufacturing and a gas supply facility (300) for supplying the bio-mixed gas to a consumer.

In addition, the biogas calorie adjustment plant according to an embodiment of the present invention, in addition to the above configuration, sensor data-based calculation function required in the individual operation process of each facility (100, 200, 300) in the biogas calorie adjustment plant It may have a configuration that further includes a master operating device 400 that processes.

As described above, the biogas calorie adjustment plant according to an embodiment of the present invention can greatly improve the utilization of biogas converted from biomass resources such as organic waste through the above configuration. A more detailed description of each equipment configuration in the plant will be continued.

2 shows a schematic configuration of a gas purification facility 100 according to an embodiment of the present invention.

As shown in FIG. 2, the gas purification facility 100 according to an embodiment of the present invention includes an inlet unit 110 into which biogas is introduced, a heat exchange unit 120 that performs heat exchange treatment for biogas, and It may have a configuration including a purification unit 130 for purifying biogas.

In addition, the gas purification facility 100 according to an embodiment of the present invention may further include a client operating device 140 supporting facility operation of the gas purification facility 100 in addition to the above-described configuration.

Here, the client operation device 140 can be understood as a computing device that supports individual operation of the gas purification facility 100 in the biogas calorie control plant based on a human-machine interface (HMI).

As described above, the gas purification facility 100 according to an embodiment of the present invention can convert biogas into biomethane through the above-described configuration. Hereinafter, each component in the gas purification facility 100 to realize this Let's explain in more detail.

Inlet unit 110 performs a function of transporting the biogas extracted from organic waste.

More specifically, the inlet unit 110 removes moisture in the biogas extracted from the biogas extraction facility (not shown) and accumulates it in the buffer, and transfers the biogas accumulated in the buffer to the heat exchange unit 120 through a blower. will be transported

In this regard, in a biogas extraction facility (not shown), biogas can be extracted from organic waste collected in a regional unit (eg, city, county, district), such as food waste, sewage sludge, and livestock manure. .

To this end, a biogas extraction facility (not shown) receives organic waste treated by solid-liquid separation, etc., ferments and decomposes it in a digestion tank (e.g., dry anaerobic digestion tank, wet anaerobic digestion tank) to produce biogas, and generates biogas It removes various trace amounts of harmful substances contained in it.

In addition, the biogas extraction facility (not shown) performs a pretreatment process for removing hydrogen sulfide components (H2S) and siloxane from biogas from which harmful substances are removed so that the biogas from which harmful substances are removed can be used as gas fuel. By carrying out, for example, biogas having a purity of 60% or more of methane (CH4) is extracted.

The heat exchange unit 120 performs a heat exchange function to lower the temperature of the transported biogas.

More specifically, when the biogas extracted from the organic waste is transferred through the inlet 110, the heat exchange unit 120 performs a heat exchange process that lowers the temperature of the biogas introduced through the heat exchanger to a set temperature for the purification process. will perform

At this time, the heat exchanger is a water-cooled heat exchanger, and it is possible to lower the temperature of the transported biogas to a set temperature suitable for the purification process performed at the rear end through a method of supplying water to a tube surrounding the heat exchanger.

The purification unit 130 performs a function of hardening the biogas.

More specifically, the purification unit 130 purifies the biogas that has been lowered to a temperature suitable for purification treatment, and converts it into biomethane having a designated methane (CH4) purity.

At this time, the purification unit 130 applies a pressure swing adsorption (PSA), which is a dry adsorption method, and accordingly, by removing carbon dioxide contained in biogas through an adsorbent (Molecular Sieve), for example, It is possible to produce biomethane with a methane purity of 95% to 97%.

For reference, the biomethane subjected to the upgrading process is stored in a separate storage tank.

The client operating device 140 performs a function of supporting facility operation of the gas purification facility 100 .

More specifically, in the process of converting biogas into biomethane through the respective components 110, 120, 130 in the gas purification facility 100 described above, the client operating device 140 has each component 110, 120, 130), HMI (Human-Machine Interface) is provided to support device control and gas component analysis based on sensor data.

At this time, the client operating device 140 simply exposes the sensor data collected for each component 110, 120, and 130 to the HMI.

On the other hand, if the client operating device 140 requires a sensor data-based calculation function for device control and gas component analysis other than simple exposure of sensor data, a data processing request including the corresponding sensor data is sent to the master operating device 400. , so that the master operating device 400 processes necessary calculation functions for the sensor data, and controls the device according to the processing result, or displays the gas component analysis result.

The following Figure 3 shows a schematic configuration of the calorie adjustment facility 200 according to an embodiment of the present invention.

As shown in FIG. 3, the calorific value adjustment facility 200 according to an embodiment of the present invention includes an inlet unit 210 for introducing biomethane and a mixing unit 220 for mixing component compensation gas with biomethane. may have a configuration that includes

In addition, the calorie adjustment facility 200 according to an embodiment of the present invention may further include a client operating device 230 supporting facility operation of the calorie adjustment facility 200, in addition to the above configuration.

Here, the client operating device 230 can be understood as a computing device that supports individual operation of the calorie adjustment facility 200 in the biogas calorie adjustment plant based on a human-machine interface (HMI).

As described above, the calorie adjustment facility 200 according to an embodiment of the present invention can produce a bio-mixed gas that satisfies the quality standards of city gas (NG, Natural Gas) through the above-described configuration. Hereinafter, to realize this Each component in the calorie adjustment facility 200 for will be described in more detail.

The inlet 210 performs a function of transporting biomethane, which is a hardened biogas.

More specifically, the inlet unit 220 is a mixing unit for biomethane through valve control of a storage tank storing biomethane in order to adjust the quality of biomethane refined by purifying biogas extracted from organic waste ( 220) will be transferred.

The mixing unit 220 performs a function of mixing component compensation gas with the transferred biomethane.

More specifically, the mixing unit 220 mixes component compensation gas with the transferred biomethane when the biomethane hardened from the biogas is transported through the inlet 210 so as to obtain city gas (NG, Natural Gas). A bio-mixed gas that satisfies the quality standards is manufactured.

At this time, the mixing unit 220 is a component compensation gas according to the component adjustment value calculated for the component values (calories, Weber index) of biomethane based on the target component values (calories, Weber index) set for the bio-mixed gas. When the flow rate for is calculated, the biomixed gas can be generated by vaporizing component compensation gas equal to the calculated flow rate through a vaporizer and inserting it into biomethane.

Here, the component compensation gas refers to a gas with a high calorific value stored in a separate storage tank for adjusting the quality (calorific value, Weber index) of biomethane, and for example, LPG (Liquefied Petroleum Gas) may correspond thereto. .

The client operating device 230 performs a function of supporting facility operation of the calorie adjustment facility 200 .

More specifically, in the process of manufacturing bio-mixed gas through each component 210, 220 in the aforementioned calorie adjustment facility 200, the client operating device 230 uses sensor data for each component 210, 220. HMI (Human-Machine Interface) will be provided to support device control and gas component analysis.

At this time, the client operating device 230 may simply expose the sensor data collected for each configuration 210 and 220 to the HMI.

On the other hand, if the client operating device 230 requires a sensor data-based calculation function for device control and gas component analysis other than simple exposure of sensor data, a data processing request including the corresponding sensor data is sent to the master operating device 400. , so that the master operating device 400 processes necessary calculation functions for the sensor data, and controls the device according to the processing result, or displays the gas component analysis result.

Next, FIG. 4 shows a schematic configuration of a gas supply facility 300 according to an embodiment of the present invention.

As shown in FIG. 4, the gas supply facility 300 according to an embodiment of the present invention includes a preprocessing unit 310 for inserting an odorant into the biomixture gas, and a biomixture gas into which the odorant is inserted to a designated consumer. It may have a configuration including a supply unit 320 for supplying to.

In addition, the gas supply facility 300 according to an embodiment of the present invention may further include a client operating device 330 supporting facility operation of the gas supply facility 300 in addition to the above-described configuration.

* Here, the client operation device 330 can be understood as a computing device that supports individual operation of the gas supply facility 300 in the biogas calorie adjustment plant based on a human-machine interface (HMI).

As described above, the calorific value adjustment facility 300 according to an embodiment of the present invention can supply the biomixed gas that meets the quality standards of city gas (NG, Natural Gas) to the demand place through the above-described configuration. Hereinafter, this is realized. Each component in the calorie adjustment facility 200 for the purpose will be described in more detail.

The pre-processing unit 310 performs a function of injecting an odorant into a biomixture gas in which a component compensation gas is mixed with biomethane.

More specifically, the preprocessor 310 injects the odorant according to the manufacturing flow rate of the bio-mixed gas when the component values (calories, Weber's index) of the bio-mixed gas satisfy preset target component values.

At this time, the pre-processing unit 310 stores the bio-mixed gas in the mixing tank when the predetermined target component value is satisfied as a result of checking the component values (calories, Weber index) for the bio-mixed gas, and the production flow rate of the bio-mixed gas The odorant can be injected into the bio-mixed gas by injecting the odorant into the mixing tank at an appropriate concentration.

Meanwhile, the preprocessing unit 310 may discharge the biomixed gas through the vent stack when a preset target component value is not satisfied as a result of confirming the component values (calories, Weber index) of the biomixture gas.

The supply unit 320 serves to supply the bio-mixed gas to a designated consumer.

More specifically, the supply unit 320 directly introduces the bio-mixed gas into which the odorant is injected into a city gas pipe network in the region according to the designation of the demand for the bio-mixed gas, or a vehicle using the bio-mixed gas as vehicle fuel. The bio-mixed gas is transported to the charging facility.

The client operating device 330 performs a function of supporting facility operation of the gas supply facility 300 .

More specifically, in the process of supplying the bio-mixed gas into which the odorant is injected through the respective components 310 and 320 in the above-described gas supply facility 300, the client operating device 330 uses each component 310 and 320 HMI (Human-Machine Interface) will be provided to support device control and gas component analysis based on sensor data.

At this time, the client operating device 330 may simply expose the sensor data collected for each configuration 310 and 320 to the HMI.

On the other hand, if the client operating device 330 requires a sensor data-based calculation function for device control and gas component analysis other than simple exposure of sensor data, a data processing request including the corresponding sensor data is sent to the master operating device 400. , so that the master operating device 400 processes necessary calculation functions for the sensor data, and controls the device according to the processing result, or displays the gas component analysis result.

Next, FIG. 5 shows a schematic configuration of a master operating device 400 according to an embodiment of the present invention.

As shown in FIG. 5, the master operating device 400 according to an embodiment of the present invention includes a local interface unit 410 for receiving a data processing request based on sensor data and processing a calculation function for sensor data. It may have a configuration including the calculation processing unit 420.

All or at least some of the configurations of the master operating system 400 may be implemented in the form of hardware modules or software modules, or in the form of a combination of hardware and software modules.

Here, the software module may be understood as, for example, a command executed by a processor for arithmetic processing within the master operating unit 400, and such a command may be loaded in a separate memory within the master operating unit 400. can have

Above, the master operating device 400 according to an embodiment of the present invention can support the operation of each facility in the biogas calorific value adjustment plant. Let's continue the explanation.

The local interface unit 410 performs a function of receiving a data processing request based on sensor data.

More specifically, the local interface unit 410 receives a data processing request based on sensor data from the client operating devices 140, 230, and 330 within each facility 100, 200, and 300 in the biogas calorific value adjustment plant.

Here, the sensor data-based data processing request is the data collected from each facility (100, 200, 300) for device control and gas component analysis during the operation of each facility (100, 200, 300) in the biogas calorific value adjustment plant. It can be understood as a message requesting an arithmetic function based on sensor data.

The calculation processing unit 420 performs a function of processing calculations for sensor data.

More specifically, when a data processing request based on sensor data is received from the client operation devices 140, 230, 330 within each facility 100, 200, 300 in the biogas calorific value adjustment plant, the calculation processing unit 420 is pre-installed. The calculation function for the sensor data is processed through the gas facility operation application, and the calculation function processing result is returned to each of the client operation devices 140, 230, and 330 through the local interface unit 410.

Here, the gas facility operation application is not installed in the client operating device (140, 230, 330) or the master operating device 400 within each facility (100, 200, 300) in the biogas calorific value adjustment plant, but rather the biogas calorific value. It is assumed that it is installed on the edge cloud site (MEC Site) formed within a set distance from the offline location of the control plant.

In this way, installing the gas facility operation application that processes the calculation function for sensor data on the edge cloud site (MEC Site) is required when changing or expanding the facility in the biogas calorific value control plant or improving the process, etc. This is to enable remote management of software (facility operation application), one of the key elements of operation.

Meanwhile, in this regard, in one embodiment of the present invention, the client operating device (140, 230, 330) and the master operating device (400) are separately operated in each facility (100, 200, 300) in the biogas calorific value adjustment plant. However, this also separates the client operating device (140, 230, 330) in each facility (100, 200, 300) in the biogas calorie adjustment plant and the master operating device 400 that relays the processing of the sensor data-based calculation function It can be understood to facilitate the change or expansion of equipment in the biogas calorific value adjustment plant.

To summarize, in one embodiment of the present invention, a gas facility management application that provides a sensor data-based calculation function is installed on the edge cloud site (MEC Site) that exists near the biogas calorific value adjustment plant, and the master operating device (400 ) connects to the edge cloud site (MEC Site) through an access network (eg, Internet network, mobile communication network) and processes sensor data-based calculation functions.

On the other hand, in the case of a gas facility management application according to an embodiment of the present invention, an edge cloud site (MEC Site) in the form of including two or more application instances (App instance) to support traffic distribution at the edge cloud site (MEC Site) stage. MEC Site).

In this case, the App Server that manages the application in the edge cloud site has a representative address (IP) representing each instance of the application.

Accordingly, the calculation processing unit 420 receives the representative address (IP) of the gas facility management application in response to the DNS query (Domain Name System Query), and generates two or more application instances (App instances) according to the traffic status of the gas facility management application. You can connect to any of them.

In other words, the operation processing unit 420 receives the representative address (IP) of the gas facility management application from the DNS server located in the core network in response to the DNS query (Domain Name System Query), and accordingly, the representative of the gas facility management application 2 or more application instances of the gas facility management application according to the traffic distribution policy at the edge cloud site (MEC Site) by forwarding the signaling message with the address (IP) as the destination address to the edge cloud site (MEC Site) Through any one of them, it is possible to process the calculation function requested from the client operating device (140, 230, 330).

However, due to the nature of the edge cloud site (MEC Site), it is not possible to maintain a constant connection between the edge cloud site (MEC Site) and the master operating device 400, and accordingly, the calculation processing unit 420 is required to process the calculation function. It is necessary to reconnect to the gas facility operation application every time.

At this time, from the perspective of the master operating device 400, the access network may change from time to time due to changes in the wireless environment, and moreover, when performing a DNS query (Domain Name System Query) for accessing the gas facility management application, the representative address of the gas facility management application ( IP), we cannot guarantee re-connection with the same App instance that was connected previously.

This is due to the characteristics of an embodiment of the present invention in which the calculation function based on sensor data is processed for each client operating device (140, 230, 330) in each facility (100, 200, 300) in the biogas calorific value adjustment plant. In each application instance (App instance) of the facility management application, it is impossible to maintain continuity of context information for each client operating device (140, 230, 330) due to a changed connection of the master operating device (400).

In other words, in the connection between the master operating device 400 and the gas facility management application, the application instance that changes each time the connection is made is the calculation of the sensor data in each client operating device 140, 230, 330 Context information, which is a history of function processing, may be disconnected, resulting in the continuity of service not being guaranteed.

For reference, this is an edge computing (MEC) where there is no common DB (App DB), which is a storage for sharing and storing context information about each client operating device (140, 230, 330) between application instances (App instances). ) in consideration of the environment.

If there is a common DB (App DB), which is a storage for sharing and storing context information in an edge computing (MEC) environment, an application instance is changed whenever the master operating device 400 is connected. Even if it is, it is possible to maintain the continuity of the context (Context) information about each client operating device (140, 230, 330) through a common DB (App DB).

In this regard, when a new session formation for each of the client operating devices 140, 230, and 330 is requested, the calculation processing unit 420 assigns each client operating device 140, 230, and 330 in the previous session formation process. By inserting the previous source address, which is the source address, into a signaling message for a new session, the edge cloud site (MEC Site) stage can support formation of a new session with the same application instance as the previous session according to the previous source address inserted into the signaling message. let it be

Accordingly, the edge cloud site needs to manage session management information related to the session formation history of the master operating device 400, and through this, if the previous source address in the signaling message exists in the session management information, session management It is possible to support the establishment of a new session with a specific application instance by checking a specific application instance recorded by matching the corresponding previous source address on the information.

For reference, the signaling message here is an HTTP-based message and may include an X-Forwarded-For (XFF) field for recording a previous source address in order to support reconnection to the same application instance.

As described above, according to the configuration of each facility in the biogas calorie adjustment plant according to an embodiment of the present invention, the biogas extracted from organic waste is purified from high-purity biomethane to produce city gas (NG, Natural Gas). It can be seen that the utilization of biogas converted from biomass resources can be greatly improved as an environment in which biomixed gas that satisfies quality standards can be manufactured and supplied to designated consumers.

In addition, according to the configuration of each facility in the biogas calorific value adjustment plant according to an embodiment of the present invention, gas facilities that provide a sensor data-based calculation function to the edge cloud site (MEC Site) that exists near the biogas calorific value adjustment plant By installing an operating application and proposing a structure in which the master operating device 400 connects to the edge cloud site (MEC Site) through an access network (eg, Internet network, mobile communication network) and processes sensor data-based calculation functions, bio It can be seen that remote maintenance for software (facility operation application), which is one of the key elements of facility operation, becomes possible when a change or expansion of facilities in a gas calorie control plant or process improvement is required.

Hereinafter, with reference to FIG. 6, a method of operating the biogas calorific value adjustment plant 100 according to an embodiment of the present invention will be described.

First, the gas purification facility 100 removes moisture in the biogas extracted from the biogas extraction facility (not shown) and accumulates it in a buffer, and transfers the biogas accumulated in the buffer through a blower (S110).

In this regard, in a biogas extraction facility (not shown), biogas can be extracted from organic waste collected in a regional unit (eg, city, county, district), such as food waste, sewage sludge, and livestock manure. .

To this end, a biogas extraction facility (not shown) receives organic waste treated by solid-liquid separation, etc., ferments and decomposes it in a digestion tank (e.g., dry anaerobic digestion tank, wet anaerobic digestion tank) to produce biogas, and generates biogas It removes various trace amounts of harmful substances contained in it.

In addition, the biogas extraction facility (not shown) performs a pretreatment process for removing hydrogen sulfide components (H2S) and siloxane from biogas from which harmful substances are removed so that the biogas from which harmful substances are removed can be used as gas fuel. By carrying out, for example, biogas having a purity of 60% or more of methane (CH4) is extracted.

Then, when the biogas extracted from the organic waste is transferred, the gas purification facility 100 performs a heat exchange process to lower the temperature of the biogas introduced through the heat exchanger to a set temperature for the purification process (S120).

At this time, the heat exchanger is a water-cooled heat exchanger, and it is possible to lower the temperature of the transported biogas to a set temperature suitable for the purification process performed at the rear end through a method of supplying water to a tube surrounding the heat exchanger.

Subsequently, the gas purification facility 100 purifies the biogas, which has been lowered to a temperature suitable for the purification process, and converts it into biomethane having a designated methane (CH4) purity (S130).

At this time, the gas purification facility 100 applies a pressure swing adsorption (PSA), which is a dry adsorption method, and accordingly, carbon dioxide contained in biogas is removed through an adsorbent (Molecular Sieve), for example , can produce biomethane with a methane purity of 95% to 97%.

Then, the calorie adjustment facility 200 mixes component compensation gas with biomethane, which is a hardened biogas extracted from organic waste, to produce a biomixed gas that meets the quality standards of city gas (NG, Natural Gas). (S140-S150).

At this time, the calorie adjustment facility 200 compensates the components according to the component adjustment values calculated for the component values (calories, Weber index) of biomethane based on the target component values (calories, Weber index) set for the bio-mixed gas. When the flow rate for the gas is calculated, the biomixed gas can be generated by vaporizing component compensation gas equal to the calculated flow rate through a vaporizer and inserting it into biomethane.

Here, the component compensation gas refers to LPG (Liquefied Petroleum Gas) of high calorific value for adjusting the quality (calorific value, Weber index) of biomethane, and may be stored in a separate storage tank.

Furthermore, the gas supply facility 300 injects an odorant according to the production flow rate of the biomixture gas when the component values (calories, Weber index) of the biomixture gas satisfy preset target component values (S160).

At this time, the gas supply facility 300 stores the bio-mixed gas in a mixing tank when a predetermined target component value is satisfied as a result of checking the component values (calories, Weber index) of the bio-mixed gas, and the production flow rate of the bio-mixed gas The odorant can be injected into the bio-mixed gas by adding the odorant to the mixing tank at a concentration according to the concentration.

On the other hand, the gas supply facility 300 may release the biomixture gas through the vent stack when a predetermined target component value is not satisfied as a result of checking the component values (calories, Weber index) of the biomixture gas.

Thereafter, the gas supply facility 300 directly introduces the bio-mixed gas into which the odorant is injected into the city gas pipe network in the region according to the designation of the demand for the bio-mixed gas, or uses the bio-mixed gas as vehicle fuel. The bio-mixed gas is transferred to the vehicle charging facility (S170).

As described above, according to the operating method of the biogas calorie adjustment plant according to an embodiment of the present invention, the quality standard of city gas (NG, Natural Gas) from biomethane obtained by refining biogas extracted from organic waste with high purity. It can be seen that the utilization of biogas converted from biomass resources can be greatly improved as an environment in which biomixed gas satisfying

Although the present invention has been described in detail with reference to preferred embodiments, the present invention is not limited to the above embodiments, and the technical field to which the present invention belongs without departing from the gist of the present invention claimed in the following claims. Anyone skilled in the art will extend the technical spirit of the present invention to the extent that various variations or modifications are possible.

According to the operating method of a biogas calorific value adjustment plant according to the present invention, a biomixed gas that meets the quality standards of natural gas (NG) is prepared from biomethane obtained by refining biogas extracted from organic waste to a high purity, and designated In terms of being able to supply to the demand side, as it goes beyond the limits of the existing technology, not only the use of the related technology, but also the possibility of marketing or sales of the applied device is sufficient, and it can be clearly implemented in reality, so industrial applicability It is an invention with

100: gas purification facility
110: inlet part 120: heat exchange part
130: purification unit 140: client operating device
200: Calorie adjustment facility
210: inlet part 220: mixing part
230: client operating device
300: gas supply facility
310: pre-processing unit 320: supply unit
330: client operating device
400: master operating device
410: local interface unit 420: calculation processing unit

Claims (1)

In the operating method of the biogas calorific value adjustment plant,
A gas purification step of purifying biogas extracted from organic waste and converting it into biomethane having a designated methane (CH4) purity;
Calculate the flow rate of the component compensation gas according to the component adjustment value calculated for the component value of the biomethane based on the set target component value, and insert the vaporized component compensation gas as much as the calculated flow rate into the biomethane Calorie adjustment step of producing a bio-mixed gas that satisfies the quality standards of city gas (NG, Natural Gas);
When the component value of the bio-mixed gas satisfies the target component value, an odorant is injected according to the production flow rate of the bio-mixed gas, and the bio-mixed gas into which the odorant is injected is passed through a city gas pipe network or a vehicle charging facility. a gas supply step of routing a supply line to be transported; and
A client operation device that supports HMI (Human-Machine Interface)-based facility operation in each facility in the biogas calorific value adjustment plant and an edge cloud site (MEC Site) installed to support sensor data-based calculation functions Processes session formation between two or more application instances, and when a new session formation for each of the client operating devices is requested, the previous source address, which is the source address assigned in the previous session establishment process, is newly assigned to each client operating device. An operation support step of inserting into a signaling message for a session and forming a new session with the same application instance as the previous session according to the previous source address in the signaling message at the edge cloud site,
The edge cloud site,
If the previous source address in the signaling message exists in the session management information based on the session management information on the session formation history in the operation support step, the specific application recorded in matching with the previous source address on the session management information A method of operating a biogas calorific value adjustment plant, characterized in that by checking the instance to support the formation of a new session with the specific application instance.

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