CN110702853A - Digital gas purification system and method - Google Patents
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Abstract
The invention relates to the technical field of gas purification, in particular to a digital gas purification system and a digital gas purification method, aiming at solving the problem that the purity index data of organic gas purified by ionic liquid is influenced by other environmental factors such as temperature, air pressure and the like to change, so that the deviation is generated between the detected value and the actual value, and the technical key points are as follows: comprises a separation chamber, a first circulation pipeline, a second circulation pipeline and a control subsystem; the control subsystem comprises a plurality of groups of digital sensors, an executing piece and a control end, the control end compares index real-time data detected by the digital sensors with corresponding index target data and controls the action of the executing piece, so that the organic gas purity data is prevented from being changed due to the influence of other environmental parameters such as temperature and the like, and the purification accuracy is improved.
Description
Technical Field
The invention relates to the technical field of gas purification, in particular to a digital gas purification system and a digital gas purification method.
Background
High-concentration gas often gushes out from the high-gas mine protective layer and the goaf, and the methane content in the gas can reach 80% -90%. If no gas control measures are taken, gas at the upper corner of the working face accumulates, and once a heat source is met, gas explosion accidents are caused, so that the safety production of a coal mine is seriously influenced. In order to prevent underground gas explosion, the coal mines in China currently adopt ground drilling exploitation, gas is pumped and discharged by an underground gas pumping and discharging system and a ground gas transmission system, and the gas is discharged into the atmosphere through a ventilation system. However, methane is a greenhouse gas, the greenhouse effect of methane is 20-24 times of that of carbon dioxide, and the share of methane in global warming accounts for 15% and is second only to carbon dioxide. Moreover, methane is a high-efficiency clean energy, belongs to a non-renewable resource, and is exhausted to cause great resource waste and air pollution. Therefore, it is necessary to collect and effectively utilize the evacuation gas.
The gas extracted from underground coal mine is mixed with a large amount of air in the pumping and discharging process, the methane concentration is only 20% -40%, the gas belongs to low-concentration gas, the quantity is huge, and the gas is not reasonably utilized at present. In addition, the ventilation air methane of the mine also contains a large amount of methane with low concentration, which is generally 0.1-0.75%, and the fluctuation range of the methane concentration is large, thus not meeting the utilization conditions of gas power generation and combustible ice engineering. If the low-concentration methane enrichment technology or the separation and purification technology can be developed, a key technology is provided for developing and utilizing the gas extracted from the coal mine and the gas in the ventilation air methane. The method has great strategic significance for increasing the energy supply of China, optimizing the energy structure and enhancing the sustainable development capability of energy.
The existing gas purification method comprises the following steps: pressure swing adsorption, activated carbon adsorption and organic solvent dissolution. The methane separation and purification technology in China generally adopts an adsorption method with low energy consumption, for example, ionic liquid is used as a solvent, the ionic liquid is a substance which is completely composed of specific cations and anions and is in a liquid state at room temperature or nearly room temperature, is tasteless and nonflammable, has extremely low steam pressure, good gas solubility, wide operable range, good thermal stability and chemical stability, is easy to separate from other substances and can be recycled. When gas is dissolved into the ionic liquid and organic gas is separated from the ionic liquid, the index data needs to be detected, and the working efficiency of purification is affected when the content of the gas dissolved in the ionic liquid is too low; and collecting the organic gas with low purity if the actual value of the purity index data of the organic gas separated from the ionic liquid is less than the set value. However, in practical applications, the purity index data of the organic gas purified by using the ionic liquid may be changed under the influence of other environmental factors such as temperature and pressure, and thus, a deviation may occur between the detected value and the actual value.
Disclosure of Invention
Therefore, the invention aims to solve the technical problems that the detection purity index data of the organic gas purified by the ionic liquid is influenced by environmental factors such as temperature, air pressure and the like to change, and deviation is generated between the detected value and the actual value, so that the purity of the purified organic gas is not high, and the digital gas purification system and the digital gas purification method which are accurate in detection purity index data and high in purity of the purified organic gas are designed.
The invention discloses a digital gas purification system, which comprises:
the separation chamber is used for separating organic gas in the ionic liquid;
the first circulation pipeline is communicated with the separation chamber and is used for inputting gas and ionic liquid, mixing the gas and the ionic liquid and then inputting the mixture into the separation chamber;
the second circulation pipeline is communicated with the separation chamber and used for outputting the organic gas separated by the separation chamber to the first circulation pipeline or collecting the organic gas;
a control subsystem, the control subsystem comprising:
the plurality of groups of digital sensors are arranged on the first circulation pipeline and the second circulation pipeline and are used for detecting index real-time data of organic gas separated from the separation chamber and gas dissolved in ionic liquid;
a plurality of actuators disposed on the first and second flow paths to control the flow states of the first and second flow paths;
the control end is in communication connection with each digital sensor and each executing piece, compares the index real-time data detected by the digital sensors with the corresponding index target data, and controls the executing piece to act;
the index real-time data comprises organic gas purity data and environmental parameter data, and the index target data comprises target parameter data corresponding to each index real-time data.
The environmental parameter data comprises one or more of temperature data, flow data and hydraulic data, and the index target data further comprises a target correlation between organic gas purity data and at least one environmental parameter data.
The first flow passage includes:
the two input pipelines are used for respectively inputting the gas and the ionic liquid;
the upstream end of the main pipeline is communicated with the two input pipelines, and the downstream end of the main pipeline is communicated with the separation chamber, so that the two input pipelines are gathered, and the input gas and the input ionic liquid are mixed;
the second flow-through pipeline comprises a first flow-through pipeline,
at least one output pipeline for outputting the organic gas with the index real-time data meeting the index target data requirement;
and the downstream end of the circulating pipeline is connected with the input pipeline and used for outputting the organic gas of which the index real-time data does not meet the requirement of the index target data and reintroducing the organic gas into the input pipeline.
The actuator includes:
the pump body and the input valves are respectively arranged on the two input pipelines;
the automatic valve is arranged on one side of the main pipeline close to the separation chamber;
and the output valve is arranged on the second flow pipeline.
The control end comprises at least one personal computer and at least one programmable logic controller which adopts a stack algorithm to store data;
the programmable logic controller is used for storing the index target data, and simultaneously controls the action of the executive component;
and the personal computer is in communication connection with the programmable logic controller and is used for realizing data synchronization.
And the control end and the digital sensor carry out mutual check of working states through the interaction of handshake signals.
And the personal computer and the programmable logic controller carry out mutual check of working states through interaction of heartbeat signals.
The programmable logic controller stores ID information and calibration data of the digital sensor, identifies the digital sensor based on the ID information of the digital sensor, and adjusts parameters of the digital sensor according to the calibration data of the digital sensor.
And the programmable logic controller also stores normal working parameters and/or working life information of each part in the digital gas purification system, judges whether the part needs to be replaced or maintained according to the normal working parameters and/or the working life information of each part, and carries out local and/or remote warning if the part needs to be replaced or maintained.
The invention discloses a method based on the digital gas purification system, which comprises the following steps:
s1, respectively inputting gas and ionic liquid from the first flow pipeline to mix to obtain a mixed solution;
s2, the digital sensor detects index real-time data of the mixed liquid and feeds the index real-time data back to the control end;
s3, the control end compares the index real-time data of the mixed liquid with the corresponding index target data stored in the mixed liquid, judges whether the index real-time data of the mixed liquid is matched with the corresponding index target data, and controls the action of the executive component to enable the mixed liquid to enter the separation chamber if the index real-time data of the mixed liquid is matched with the corresponding index target data of the mixed liquid;
s4, the digital sensor detects the index real-time data of the organic gas in the second flow pipeline and feeds the index real-time data back to the control end;
and S5, comparing the index real-time data of the organic gas with the corresponding index target data stored by the control end, judging whether the index real-time data are matched with the corresponding index target data, if so, outputting the index real-time data to each corresponding output pipeline, and otherwise, outputting the index real-time data to the circulating pipeline.
The technical scheme of the invention has the following advantages:
1. the digital sensor positioned on the front side of the separation chamber is used for detecting index real-time data of a mixed liquid of gas and ionic liquid, transmitting environmental parameter values except organic gas purity data to a control end, selecting corresponding organic gas purity data by comparing the environmental parameters for judgment so as to judge the concentration of the gas dissolved in the ionic liquid, and introducing the mixed liquid in a first circulation pipeline into the separation chamber when the concentration meets index target data so as to increase the purification efficiency of the system; the digital sensor positioned at the rear side of the separation chamber is used for detecting index real-time data of the organic gas desorbed from the separation chamber, and the operation in the same way is used for judging whether the purity index data of the separated organic gas meets the index target data requirement or not, and if so, the purity index data is collected, and the collected gas has high purity.
2. According to the digital gas purification system, at least one qualified output pipeline for outputting the organic gas is arranged, so that the organic gas which meets the requirements and has different concentrations can be desorbed and output as required; meanwhile, the circulation pipeline is arranged to collect the organic gas which does not meet the requirement so as to be reintroduced into the input pipeline, and the organic gas with low purity is prevented from being collected.
3. According to the digital gas purification system, due to the arrangement of the automatic valve, under the condition that the index real-time data of the mixed liquid of the gas and the ionic liquid is not matched with the index target data of the mixed liquid, the automatic valve can be temporarily closed to prevent unqualified mixed liquid from entering the separation chamber, so that the automatic valve is opened after the gas is fully dissolved and saturated, the working efficiency of the purification system is improved, and the energy consumption is reduced.
4. The digital gas purification system provided by the invention can be used for carrying out mutual check on the working state between the control end and the digital sensor through the interaction of handshake signals, so that the stability of the system is improved.
5. The digital gas purification system of the invention can carry out mutual check of working states by the interaction of heartbeat signals between a personal computer and the programmable logic controller, thereby effectively preventing information loss.
6. According to the digital gas purification system, the database of each digital sensor is established in the programmable logic controller, and the digital sensors are subjected to ID identification, so that the safety of the system is improved, the purpose of online verification is realized, and the working efficiency is improved.
7. The digital gas purification system stores the normal working parameters and/or the working life information of each part in the digital gas purification system in the programmable logic controller, thereby realizing the prejudgment of the system.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a digital gas purification system according to an embodiment of the present invention;
FIG. 2 is a block diagram of a digital gas purification system according to an embodiment of the present invention;
fig. 3 is a block diagram of a plc in a digital gas purification system according to an embodiment of the present invention.
Description of reference numerals:
11. an input pipeline; 12. a main pipeline; 13. an output pipeline; 14. a circulation line; 2. a separation chamber; 31. a digital sensor; 32. an executive component; 321. a pump body; 322. an input valve; 323. an automatic valve; 324. an output valve; 33. a control end; 331. a personal computer; 332. a programmable logic controller; 333. a database; 334. a logic control unit; 335. an alarm unit; 336. an alarm; 4. a redundant network switch; 5. a remote server.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The first embodiment is as follows:
the digital gas purification system of the embodiment, as shown in fig. 1 and fig. 3, specifically includes:
a separation chamber 2 for separating organic gas in the ionic liquid; a first circulation pipeline which is communicated with the separation chamber 2 and is used for inputting gas and ionic liquid, mixing the gas and the ionic liquid and inputting the mixture into the separation chamber 2; a second circulation pipeline which is communicated with the separation chamber 2 and is used for outputting the organic gas which is separated by the separation chamber 2 and meets the requirement of each index data;
a control subsystem comprising: the digital sensors 31 are arranged on the first circulation pipeline and the second circulation pipeline and are used for detecting index real-time data of organic gas separated from the ionic liquid and the separation chamber 2 dissolved in the gas; the executive component 32 is arranged on the first circulation pipeline and the second circulation pipeline and is used for controlling the circulation state of the first circulation pipeline and the second circulation pipeline; and a control end 33 connected with each digital sensor 31 and the executive component 32 in a communication way, and used for comparing the index real-time data detected by the digital sensor 31 with the corresponding index target data and controlling the action of the executive component 32. The index real-time data comprises organic gas purity data and environmental parameter data, and the index target data comprises target parameter data corresponding to each index real-time data.
As shown in fig. 1 and 3, in the present embodiment, the digital sensors 31 are respectively located at the front and rear sides of the separation chamber 2; the digital sensor 31 positioned on the front side of the separation chamber 2 is used for detecting the index real-time data of the mixed liquid of the gas and the ionic liquid, transmitting the environmental parameter values except the organic gas purity data to the control end 33, and selecting corresponding organic gas purity data for judgment by comparing the environmental parameters, so as to judge the concentration of the gas dissolved in the ionic liquid, and if the concentration is too low, the working efficiency of the purification system is influenced; the digital sensor 31 positioned at the rear side of the separation chamber 2 is used for detecting the index real-time data of the organic gas desorbed from the separation chamber 2, judging whether the purity index data of the separated organic gas is qualified or not by the same operation, and collecting the organic gas with low purity if the purity index data of the separated organic gas is not qualified.
As shown in fig. 1, in the present embodiment, the first flow passage includes: two input pipelines 11 for respectively inputting gas and ionic liquid; a main pipeline 12, the upstream end of which is communicated with the two input pipelines 11, and the downstream end of which is communicated with the separation chamber 2, and is used for summarizing the two input pipelines 11 and mixing the input gas and the ionic liquid; the second circulation line includes: three output pipelines 13 for outputting organic gas whose index real-time data meets the index target data requirement; the downstream end of the circulation pipeline 14 is connected to an input pipeline 11 for outputting the organic gas whose index real-time data does not meet the requirement of the index target data, and reintroducing the organic gas into the input pipeline 11 for secondary purification. At least one qualified output pipeline 13 for outputting the organic gas is arranged, so that the organic gas which meets the requirements and has different concentrations can be desorbed and output according to the requirements; meanwhile, the circulation pipeline 14 is arranged to collect the organic gas which does not meet the requirement to be reintroduced into the input pipeline 11, so that the organic gas with low purity is prevented from being collected.
As shown in fig. 1, in the present embodiment, the actuator 32 includes: a pump body 321 and an input valve 322 respectively arranged on the two input pipelines 11; an automatic valve 323 disposed on the side of the main pipe 12 adjacent to the separation chamber 2; and an output valve 324 disposed on the second flow path. Therefore, after the digital sensor 31 detects the index real-time data of the mixed liquid of the gas and the ionic liquid, when the working efficiency of the purification system is affected by judging that the concentration of the gas dissolved in the ionic liquid is too low, the control end 33 adjusts the power of the pump body 321 and the opening degree of the input valve 322 to adjust the unit volume input amount of the gas and the ionic liquid; after the digital sensor 31 detects the real-time data of the index of the organic gas desorbed from the separation chamber 2, the control end 33 operates the output valve 324 to desorb and output the organic gas with different concentrations according to the requirement, or to reintroduce the organic gas with different concentrations into the input pipeline 11 through the circulation pipeline 14. In addition, the automatic valve 323 is arranged, under the condition that the index real-time data of the mixed liquid of the gas and the ionic liquid is not matched with the index target data, the automatic valve 323 can be closed temporarily to prevent unqualified mixed liquid from entering the separation chamber 2, so that the automatic valve 323 is opened after the gas is fully dissolved and saturated, the working efficiency of the purification system is improved, and the energy consumption is reduced.
As shown in fig. 3, the control end 33 is connected to the digital sensor 31 and the actuator 32, and the control end 33 includes: at least one personal computer 331 and at least one programmable logic controller 332 corresponding to the personal computer 331, wherein each digital sensor 31 is connected to the personal computer 331 and the programmable logic controller 332, respectively, and each actuator 32 is connected to the programmable logic controller 332. As shown in the drawings, in the present embodiment, two personal computers 331 and two programmable logic controllers 332 are taken as an example for explanation, but it is needless to say that the personal computers 331 and the programmable logic controllers 332 are only emphasized to be in one-to-one correspondence, and the specific number is determined according to actual scale and is not limited. The programmable logic controller 332 is provided with a database 333, the personal computer 331 is provided with a visual operation interface, and the personal computer 331 is in communication connection with the programmable logic controller 332, so that an operator can control the programmable logic controller 332 through the personal computer 331, and simultaneously, data synchronization between the personal computer 331 and the programmable logic controller 332 is realized, however, in the embodiment, the database 333 of the programmable logic controller 332 has a small data storage amount, so that a stack algorithm is adopted to temporarily store data, the personal computer 331 adopts a hard disk for storage, the data storage amount is large, the programmable logic controller 332 receives new preset information and then synchronizes to the personal computer 331 for storage, so as to prevent data loss, and simultaneously, the data is repeatedly covered by itself, namely, if new data comes, the recent data is covered and replaced by old data, to achieve an iteration of the data.
As shown in fig. 3, in this embodiment, the preset information stored in the database 333 of the programmable logic controller 332 includes index target data of the mixed liquid and the organic gas, where the index target data of the mixed liquid and the organic gas respectively includes organic gas purity data and environment parameter data, and the environment parameter data includes one or a combination of temperature data, flow rate data and hydraulic pressure data, and the database 333 of the programmable logic controller 332 further stores target correlation among the organic gas purity data, the environment parameter data and at least one of the environment parameter data, that is, corresponding target purity data in different environment parameter data ranges. One or more environmental parameter data which may affect the organic gas purity data are acquired through the digital sensor 31, and the corresponding target data of the organic gas purity data under each environmental parameter data are edited and stored at the control end 33, so that the organic gas purity data detected under different environmental conditions are compared with the corresponding target data, the influence of the environmental parameters on the organic gas purity data is eliminated, and the judgment accuracy is improved. In addition, the database 333 of the plc 332 stores ID information and calibration data of each of the digital sensors 31, and normal operating parameters and/or operating life information of each component of the digital gas purification system. Of course, the preset information stored in the database 333 of the plc 332 is synchronized with the pc 331 for backup storage.
As shown in fig. 1 and 3, the plc 332 further includes a logic control unit 334 and an alarm unit 335, and the database 333 and the alarm unit 335 are both connected to the logic control unit 334; correspondingly, an alarm 336 is respectively mounted on the input pipeline 11 and the main pipeline 12 at the front side of the separation chamber 2, and the alarm 336 is connected with an alarm unit 335. Meanwhile, each digital sensor 31 feeds back the detected real-time index data to the programmable logic controller 332, and the logic control unit 334 selects corresponding organic gas initial degree data from the environmental parameter data of the corresponding index target data in the database 333 according to the feedback information of each digital sensor 31, and sends the corresponding organic gas initial degree data to the logic control unit 334 for comparison and judgment, and controls each executive component 32 to act according to the judgment result.
As shown in fig. 3, each digital sensor 31 has ID information such as a fixed model, a rated load, a permitted load, a limit load, a sensitivity, etc., the programmable logic controller 332 stores the ID information of each digital sensor 31 in the database 333, when the digital sensor 31 is replaced or the system is restarted, the digital sensor 31 sends the ID information to the programmable logic controller 332, the logic control unit 334 compares the ID information of each digital sensor 31 in the system with the reference ID information stored in the database 333 to detect whether the digital sensor 31 is legal or valid, and if the ID information of the digital sensor 31 in the system is detected to be not in accordance with the reference ID information stored in the database 333, the alarm unit 335 is controlled to locally warn to identify the digital sensor 31.
As shown in fig. 3, calibration data of each digital sensor 31 is established in the database 333 of the programmable logic controller 332, and the digital sensors 31 at each position in the system are calibrated by adjusting parameters according to the calibration data of the digital sensors 31 in the database 333, so that online calibration of the digital sensors 31 is realized, the digital sensors 31 do not need to be disassembled for calibration, time is saved, and labor cost is reduced.
As shown in fig. 3, the database 333 of the programmable logic controller 332 stores the normal operating parameters and/or the operating life information of each component in the digital analysis system, and can determine whether the component needs to be replaced or maintained according to the normal operating parameters and/or the operating life information of each component, if so, the programmable logic controller controls the alarm unit 335 to perform local warning, thereby implementing a function of prejudging the operating state of each component, reminding a worker to replace or maintain in advance, preventing a fault from occurring, and improving the operating efficiency.
As shown in fig. 3, in order to improve the stability of the system, in the present embodiment, the control terminal 33 and the digital sensor 31 perform mutual check of the working states through the interaction of handshake signals, a signal is provided to the digital sensor 31 each time the control terminal 33 is started, the digital sensor 31 feeds back a signal to the control terminal 33, the feedback signal includes ID information of each digital sensor 31, the control terminal 33 compares the feedback signal with corresponding ID information in the database 333 to determine, when there is a problem in the digital sensor 31, or when a certain symptom needs to be processed but does not temporarily affect the normal operation, and when the change of the sensor is within an error range, indication information of rejection, warning, or normal activation is made.
As shown in fig. 3, in order to prevent information loss, in the present embodiment, the personal computer 331 and the programmable logic controller 332 perform mutual check of the operating state by the interaction of the heartbeat signal. That is, when it is set that the plc 332 and the pc 331 do not receive the signals from each other within the preset time, it is determined that the pc 331 or the plc 332 is down, and when one of the pc 331 or the plc 332 is down, the system stops operating, and waits for the pc 331 or the plc 332 in the down state to restart or continue operating, but the data is directly stored in the normally operating pc 331 or the plc 332, and after the down side restarts, the data is transmitted to the down side. Wherein, the preset time for judging whether the personal computer 331 or the programmable logic controller 332 is normal is not more than 1 minute.
As shown in fig. 2, the digital gas purification system disclosed in this embodiment further includes at least one redundant network switch 4, the redundant network switches 4 are in communication with each other and a remote server 5, and each set of the personal computer 331 and the plc 332 respectively corresponds to one of the redundant network switches 4 and is in communication with the redundant network switch 4. Through the setting of the redundant network switch 4 and the remote server 5, the redundant control of the local workstation and the remote workstation is realized, namely, the remote parameter modification, the remote online calibration and the remote fault warning are realized. In addition, the remote server 5 can also realize cloud storage of information, so that later-period adjustment is facilitated, and information sharing of various suppliers and factories is realized.
Example two:
the method based on the digital gas purification system comprises the following steps:
s1: preparing a mixed solution according to the requirement of the organic gas to be purified and output, and respectively inputting gas and ionic liquid from the first flow pipeline to mix to obtain the mixed solution;
s2: the digital sensor 31 detects the index real-time data of the mixed liquid and feeds the index real-time data back to the control end 33;
s3: the control end 33 collects the real-time incidence relation between the organic gas purity data in the index real-time data of the mixed liquid and at least one environmental parameter data respectively, compares the organic gas purity data with the target incidence relation between the corresponding index target data stored in the control end, judges whether the organic gas purity data is matched with the environmental parameter data or not, controls the action of the executive component 32 to enable the mixed liquid to enter the separation chamber 2 if the organic gas purity data is matched with the target incidence relation between the corresponding index target data, and adjusts the power of the pump body 321 and the opening degree of the input valve 322 to adjust the unit volume input quantity of gas and ionic;
s4: the digital sensor 31 detects the index real-time data of the organic gas desorbed from the separation chamber 2 and feeds the index real-time data back to the control end 33;
s5: the control end 33 collects the real-time incidence relation between the organic gas purity data in the index real-time data of the organic gas and at least one environmental parameter data respectively, and compares the real-time incidence relation with the target incidence relation between the corresponding index target data stored in the control end; and judging that the data are matched, if so, outputting the data to a corresponding output pipeline 13, and otherwise, outputting the data to a circulating pipeline 14 for circulating purification.
Before purification, the mixed liquid is firstly detected by the digital sensor 31 and fed back to the control end 33 to judge whether the mixed liquid for purification is qualified or not, and the mixed liquid is input into the separation chamber 2 on the premise of being qualified, so that the working efficiency of the purification system is improved; in addition, after separation, the organic gas is detected again through the digital sensor 31 and fed back to the control end 33 to judge whether the output organic gas is qualified or not, so as to improve the purity of the organic gas; secondly, the digital sensor 31 is adopted to transmit the mixed liquid and other environment parameter values of the separated and output organic gas except the organic gas purity data to the control end 33, and corresponding organic gas purity data is selected by comparing each environment parameter for judgment, so that the phenomenon that the organic gas purity data is influenced by other environment parameters such as temperature and the like to change, the detected value and the actual value deviate to give an error instruction is avoided, and the purification accuracy is improved.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. Digital gas purification system, characterized by, includes:
a separation chamber (2) for separating organic gases from the ionic liquid;
the first circulation pipeline is communicated with the separation chamber (2) and is used for inputting gas and ionic liquid, mixing the gas and the ionic liquid and then inputting the mixture into the separation chamber (2);
the second circulation pipeline is communicated with the separation chamber (2) and is used for outputting the organic gas separated by the separation chamber (2) to the first circulation pipeline or collecting the organic gas;
a control subsystem, the control subsystem comprising:
the multiple groups of digital sensors (31) are arranged on the first circulation pipeline and the second circulation pipeline and are used for detecting index real-time data of gas dissolved in ionic liquid and organic gas separated out from the separation chamber (2);
a plurality of actuators (32) provided on the first and second flow paths to control the flow states of the first and second flow paths;
the control end (33) is in communication connection with each digital sensor (31) and each executive component (32), compares the index real-time data detected by the digital sensors (31) with the corresponding index target data, and controls the executive components (32) to act;
the index real-time data comprises organic gas purity data and environmental parameter data, and the index target data comprises target parameter data corresponding to each index real-time data.
2. The digital gas purification system of claim 1, wherein the environmental parameter data comprises one or more of temperature data, flow data, hydraulic data, and the target objective data further comprises a target correlation between organic gas purity data and at least one of the environmental parameter data.
3. The digital gas refining system of claim 1, wherein the first flow path comprises:
two input pipelines (11) for inputting the gas and the ionic liquid respectively;
a main pipe (12), the upstream end of which is communicated with the two input pipes (11), and the downstream end of which is communicated with the separation chamber (2), for collecting the two input pipes (11) and mixing the input gas and the ionic liquid;
the second flow-through pipeline comprises a first flow-through pipeline,
at least one output pipeline (13) for outputting the organic gas with the index real-time data meeting the index target data requirement;
and the downstream end of the circulating pipeline (14) is connected with the input pipeline (11) and is used for outputting the organic gas of which the index real-time data does not meet the requirement of the index target data and reintroducing the organic gas into the input pipeline (11).
4. The digital gas refining system of claim 3, wherein the actuator (32) comprises:
the pump body (321) and the input valve (322) are respectively arranged on the two input pipelines (11);
an automatic valve (323) arranged on the side of the main pipe (12) close to the separation chamber (2);
and the output valve (324) is arranged on the second flow pipeline.
5. The digital gas refining system of claim 4, wherein the control terminal (33) includes at least one personal computer (331) and at least one programmable logic controller (332) that employs a stack algorithm for data storage;
the programmable logic controller (332) is used for storing the index target data, and meanwhile, the programmable logic controller (332) controls the action of the executive component (32);
the personal computer (331) is communicatively coupled to the programmable logic controller (332) for data synchronization.
6. The digital gas refining system as defined in claim 5, characterized in that the control terminal (33) and the digital sensor (31) perform mutual checking of the working status by means of the interaction of handshake signals.
7. The digital gas refining system of claim 5, characterized in that the personal computer (331) and the programmable logic controller (332) perform mutual checking of the working status by means of the interaction of heartbeat signals.
8. The digital gas refining system of claim 5, characterized in that the programmable logic controller (332) stores ID information and calibration data of the digital sensor (31), and the programmable logic controller (332) identifies the digital sensor (31) based on the ID information of the digital sensor (31) and adjusts the parameter of the digital sensor (31) according to the calibration data of the digital sensor (31).
9. The digital gas purification system as claimed in claim 5, wherein the programmable logic controller (332) further stores normal operating parameters and/or operating life information of each component in the digital gas purification system, and determines whether the component needs to be replaced or maintained according to the normal operating parameters and/or operating life information of each component, and if so, performs local and/or remote warning.
10. Digital gas purification method, based on a digital gas purification system according to any one of claims 1 to 9, comprising:
s1, respectively inputting gas and ionic liquid from the first flow pipeline to mix to obtain a mixed solution;
s2, the digital sensor (31) detects index real-time data of the mixed liquid and feeds the index real-time data back to the control end (33);
s3, the control end (33) compares the index real-time data of the mixed liquor with the corresponding index target data stored in the mixed liquor, whether the index real-time data of the mixed liquor are matched or not is judged, and if yes, the execution piece (32) is controlled to act to enable the mixed liquor to enter the separation chamber (2);
s4, the digital sensor (31) detects the index real-time data of the organic gas on the second flow pipeline and feeds the index real-time data back to the control end (33);
s5, the control end (33) compares the index real-time data of the organic gas with the corresponding index target data stored in the control end, judges whether the index real-time data are matched or not, if yes, the index real-time data are output to the corresponding output pipelines (13), and if not, the index real-time data are output to the circulating pipeline (14).
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