CN216498407U - Treatment system for polluted gas - Google Patents
Treatment system for polluted gas Download PDFInfo
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- CN216498407U CN216498407U CN202121849875.0U CN202121849875U CN216498407U CN 216498407 U CN216498407 U CN 216498407U CN 202121849875 U CN202121849875 U CN 202121849875U CN 216498407 U CN216498407 U CN 216498407U
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Abstract
The utility model discloses a treatment system of polluted gas, which comprises: the system comprises a first gas purification device, a second gas purification device, a purification monitoring device and a processor; the purification monitoring equipment is connected with the first input end and the first output end and is used for detecting the difference value of the physical parameters of the input gas and the output gas; the processor is electrically connected with the purification monitoring equipment and triggers the polluted gas to be input and output by the other one of the first and second gas purification equipment when the difference value meets the preset condition. In the utility model, when the pressure difference is overlarge, the polluted gas is triggered to be input and output from the other of the first gas purification equipment and the second gas purification equipment, so that under the condition that the purification degree of one of the first gas purification equipment and the second gas purification equipment is saturated, the other equipment is used for treating the polluted gas, the concentration of the gas discharged by an enterprise can be effectively controlled, and the concentration of the discharged polluted gas is prevented from exceeding the standard.
Description
Technical Field
The utility model relates to the field of industrial production, in particular to a treatment system for polluted gas.
Background
For some enterprises, the emission of pollution gas in production operation is inevitable, most local governments have forced to install pollution source online monitoring equipment and upload monitoring data to a third-level government monitoring platform, and once the emission concentration exceeds the standard, severe penalty can be caused.
However, in the prior art, it is often difficult to effectively control the concentration of the polluted gas discharged by the enterprise, for example, the enterprise may pay attention to the treatment of the gaseous pollutants, and cannot see the treatment effect in real time, for example, the emission of the activated carbon box to the polluted gas when the adsorption saturation is possible exceeds the standard, in this case, on one hand, the discharged gas may pollute the atmospheric environment, and on the other hand, the enterprise itself may face serious punishment.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defect that the concentration of the polluted gas discharged by enterprises is difficult to effectively control in the prior art, and provides a polluted gas treatment system capable of effectively controlling the concentration of the polluted gas discharged by the enterprises.
The utility model solves the technical problems through the following technical scheme:
the present invention provides a treatment system for a contaminated gas, the treatment system comprising: the device comprises a first gas purification device, a second gas purification device, a purification monitoring device and a processor;
the polluted gas generated by the polluted gas generating source is input from a first input end and output from a first output end of one of the first gas purifying equipment and the second gas purifying equipment;
the purification monitoring equipment is connected with the first input end and the first output end and is used for monitoring the difference value of the physical parameters of the gas input by the first input end and the gas output by the first output end;
the processor is electrically connected with the purification monitoring equipment and used for receiving the difference value and triggering the polluted gas to be input from a second input end and output from a second output end of the other one of the first gas purification equipment and the second gas purification equipment when the difference value meets a preset condition.
The utility model comprises a first gas purification device and a second gas purification device which can be switched mutually, when the difference value meets a preset condition (for example, the pressure difference between a first input end and a first output end is overlarge), the polluted gas is triggered to be input from a second input end and output from a second output end of the other one of the first gas purification device and the second gas purification device, so that under the condition that the purification degree of one of the first gas purification device and the second gas purification device is saturated, the other device is used for treating the polluted gas, the concentration of the exhausted gas of an enterprise can be effectively controlled, and the concentration of the exhausted polluted gas is prevented from exceeding the standard.
Preferably, the purification monitoring device comprises a differential pressure transmitter, the first gas purification device comprises a first activated carbon box, the second gas purification device comprises a second activated carbon box, the physical parameter comprises a pressure difference, and the preset condition comprises that the monitored pressure difference is greater than a preset pressure difference.
According to the utility model, the emission concentration of the polluted gas can be reduced through the adsorption effect of the activated carbon box, the differential pressure transmitter can be used for efficiently monitoring the differential pressure between the input end and the output end of the first activated carbon box or the second activated carbon box, and switching to the other activated carbon box when the differential pressure is too high, so that the situation that the polluted gas is continuously subjected to ineffective treatment by the activated carbon box with saturated adsorption degree is avoided, the emission concentration of the polluted gas can be ensured not to exceed the index specified by a supervision department, and the efficiency and the continuity of polluted gas treatment are improved.
Preferably, the treatment system further comprises an exhaust fan, and the exhaust fan is connected with the output ports of the first gas purification device and the second gas purification device and is used for extracting the polluted gas from the output ports.
In the utility model, the exhaust fan can be used for pumping the polluted gas out of the output port of the first gas purification equipment or the second gas purification equipment so as to exhaust the treated polluted gas.
Preferably, the processing system further comprises a switching device, and the processor is specifically configured to trigger the switching device to change the ventilation direction so as to guide the contaminated gas to be input from the second input end and output from the second output end of the other of the first gas purification apparatus and the second gas purification apparatus.
Preferably, the processing system further includes an exhaust port, the gas output by the first output port or the second output port is exhausted from the exhaust port, and the switching device specifically includes a first three-way valve and a second three-way valve;
a first port, a second port and a third port of the first three-way valve are respectively connected with the pollution gas generating source, the first input end and the second input end;
and a fourth port, a fifth port and a sixth port of the second three-way valve are respectively connected with the row port, the first output end and the second output end.
According to the utility model, the processor can automatically switch the processing device of the polluted gas through the switching device, namely the first gas purification equipment or the second gas purification equipment, so that the polluted gas can be timely and effectively processed in real time, and the condition that an enterprise is punished by a supervision department due to the over-standard pollutant emission concentration is avoided.
And through two three-way valves, can simply switch over the trend of pipeline, the discharge direction of polluted gas promptly, in case there is the needs treater then can control the direction of ventilating of switching two three-way valves to the gaseous clarification plant who effectively utilizes to have higher throughput handles polluted gas.
Preferably, the processing system further comprises an exhaust port, and the gas output by the first output end or the second output end is exhausted from the exhaust port;
the treatment system also comprises an online monitoring subsystem, wherein the online monitoring subsystem is used for receiving the gas discharged from the discharge port and monitoring the discharge concentration of the discharged gas.
The utility model overcomes the defects that most of the prior art only considers the treatment of monitoring gas or polluted gas, for example, the treatment is often too late once the monitoring exceeds the standard under the condition of only considering the monitoring, and the data is uploaded to a supervision department, so that the result is penalized by the supervision department; in another example, in the case of processing that focuses only on the contaminated gas, the processing effect cannot be monitored, and it is not known whether the discharge exceeds the standard. Therefore, the utility model combines the monitoring of the polluted gas and the treatment of the polluted gas into a large pollution source closed-loop control system, and can automatically and real-timely monitor the emission concentration of the treated discharged gas through the on-line monitoring subsystem while the gas generated by the polluted gas generation source is treated in real time.
Preferably, the online monitoring subsystem comprises a gas sampling device, and the gas sampling device is mounted on the discharge port and is used for collecting gas discharged by the discharge port;
the online monitoring subsystem further comprises an analyzer and a data acquisition instrument, wherein one end of the analyzer is connected with the gas sampling equipment and is used for receiving a gas sample acquired by the gas sampling equipment and analyzing the gas sample to generate an electrical signal;
the other end of the analyzer is connected with the data acquisition instrument and the processor and used for sending the electrical signals to the data acquisition instrument and the processor respectively, the data acquisition instrument is used for sending the electrical signals to an external monitoring department, and the processor is used for carrying out internal analysis on the electrical signals.
In the utility model, the electric signals generated after the gas sample is analyzed can be respectively sent to an external monitoring department and the interior of an enterprise, and the interior of the enterprise can analyze the concentration of the polluted gas represented by the electric signals, so that corresponding measures are taken to avoid the emission concentration of the polluted gas from exceeding the standard.
Preferably, the online monitoring subsystem further comprises at least one of a heat trace line, a preprocessor and an isolator;
one end of the heat tracing pipeline is connected with the gas sampling equipment, the other end of the heat tracing pipeline is connected with the analyzer, and the gas sample collected by the gas sampling equipment is transmitted into the analyzer through the heat tracing pipeline;
one end of the preprocessor is connected with the gas sampling equipment, the other end of the preprocessor is connected with the analyzer, and the preprocessor is used for preprocessing the gas sample collected by the gas sampling equipment and transmitting the preprocessed gas into the analyzer;
one end of the isolator is connected with the analyzer, the other end of the isolator is connected with the processor and the data acquisition instrument, the isolator is used for dividing the electric signals generated by the analyzer into two paths, one path is transmitted to the processor, and the other path is transmitted to the data acquisition instrument.
According to the utility model, the heat tracing pipeline can prevent the polluted gas from condensing with liquid, so that the gas can be effectively discharged, the gas sample can be pumped from the gas sampling equipment to the preprocessor by using the negative pressure generated by compressed air through the preprocessor, and is subjected to pretreatment such as drying, so that the analysis of the effective gas sample by the analyzer is facilitated, and the processed electrical signals can be effectively divided into two paths through the isolator.
Preferably, the online monitoring subsystem further comprises a gas supply station, wherein the gas supply station is connected with the analyzer and is used for supplying combustion-supporting gas and/or carrier gas to the analyzer for the analyzer to analyze the gas sample.
The utility model provides a gas supply station, which is different from the prior art that 1 or 2 hydrogen/nitrogen steel cylinders are mostly placed in a monitoring station for supplying gas, and the gas supply station comprises a plurality of hydrogen steel cylinders and a plurality of nitrogen steel cylinders, wherein the hydrogen steel cylinders and the nitrogen steel cylinders are respectively connected in series by a main pipeline for supplying gas together.
And the utility model can also further include the hydrogen monitoring equipment, is used for producing the alarm when the hydrogen exceeds certain concentration, thus improve the security.
Preferably, the processing system specifically comprises a plurality of rows of ports, and a heat tracing pipeline, a preprocessor, an analyzer and a data acquisition instrument which are the same in number as the rows of ports and are correspondingly connected.
The utility model is different from the existing on-line monitoring system which mostly aims at a single row port, and a plurality of factories often have a plurality of row ports and cannot simultaneously monitor the plurality of row ports.
Preferably, the processor is further configured to generate a prompt message when the emission concentration of the pollutant gas is monitored to be greater than or equal to a pollution threshold value, wherein the pollution threshold value is smaller than a standard value specified by an external regulatory authority.
In the utility model, when the emission concentration of the polluted gas exceeds the pollution threshold, the prompt message is generated, which is beneficial for relevant personnel to process in time, such as production or process adjustment, and the emergency shutdown of a factory is avoided, and the pollution threshold is set to be smaller than a standard value specified by an external monitoring department, so that an enterprise can adjust in advance, and the emission concentration of the emission is prevented from exceeding the standard.
Preferably, the processor is specifically configured to trigger the pollutant gas to be input from the second input end and output from the second output end of the other of the first gas purification apparatus and the second gas purification apparatus when the difference value meets a preset condition and the emission concentration of the pollutant gas is greater than or equal to the pollution threshold value.
According to the utility model, the emission concentration of the polluted gas is greater than or equal to the pollution threshold value as the switching condition of the gas purification equipment, so that the resource utilization rate can be improved, and the resource waste caused by frequent switching of the gas purification equipment can be avoided.
Preferably, the pollution threshold includes a first pollution threshold and a second pollution threshold, and the processor is specifically configured to generate a prompt message for characterizing an alarm signal when it is monitored that the emission concentration of the polluted gas is greater than or equal to the first pollution threshold and less than the second pollution threshold; and when the emission concentration of the polluted gas is monitored to be greater than or equal to the second pollution threshold, generating prompt information for triggering the target device to stop.
According to the utility model, two-stage alarm prompt is provided, and when the emission concentration exceeds a first pollution threshold but does not exceed a second pollution threshold, the alarm prompt is only given in the form of an alarm signal, so that related personnel are reminded to take measures to adjust the process production system; and when the emission concentration exceeds a second pollution threshold value, triggering the target device to stop so as to avoid the generation of the polluted gas from the source.
In the utility model, the processor is specifically used for monitoring the average emission concentration of the polluted gas in a preset time range in real time through a sliding window, and the preset time range is smaller than a standard time range specified by an external supervision department.
According to the utility model, the average emission concentration of the polluted gas can be monitored in real time in a sliding window mode, and the preset time range is set to be smaller than the standard time range specified by an external supervision department, so that early warning data which is stricter and advanced than the check of the supervision department can be obtained, and the emission exceeding standard can be effectively prevented from being punished and the factory stops production.
Drawings
FIG. 1 is a schematic structural diagram of a system for treating a contaminated gas according to an embodiment of the present invention.
FIG. 2 is a partial flow diagram of a gas treatment process utilizing a processing system according to an embodiment of the present invention.
FIG. 3 is a partial flow diagram of a gas treatment process utilizing a processing system according to an embodiment of the present invention.
FIG. 4 is a general flow diagram of a gas treatment process utilizing the treatment system of an embodiment of the present invention.
Detailed Description
Some technical terms often appearing in the embodiments of the present invention are first explained:
the terms "having," "may have," "include," or "may include," as used herein, indicate the presence of the corresponding function, operation, element, etc. of the disclosure, and do not limit the presence of the other function or functions, operations, elements, etc. It will be further understood that the terms "comprises" and "comprising," when used herein, specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof.
The term "a or B," "at least one of a and/or B," or "one or more of a and/or B," as used herein, includes any and all combinations of the words listed therewith. For example, "a or B," "at least one of a and B," or "at least one of a or B" means (1) including at least one a, (2) including at least one B, or (3) including both at least one a and at least one B.
The descriptions of the first, second, etc. appearing in the embodiments of the present application are for illustrative purposes and for distinguishing the objects of description, and do not indicate any particular limitation on the number of devices in the embodiments of the present application, and do not constitute any limitation on the embodiments of the present application. For example, a first element could be termed a second element, without departing from the scope of the present disclosure, and, similarly, a second element could be termed a first element.
It will be understood that when an element (e.g., a first element) is "connected to" or "coupled (operatively or communicatively) to" another element (e.g., a second element), the element may be directly connected or coupled to the other element and there may be intermediate elements (e.g., a third element) between the element and the other element. In contrast, it will be understood that when an element (e.g., a first element) is "directly connected to" or "directly coupled to" another element (e.g., a second element), there are no intervening elements (e.g., third elements) between the element and the other element.
The utility model is further illustrated by the following examples, which are not intended to limit the scope of the utility model.
The present embodiment provides a system for treating a contaminated gas, the system comprising: the system comprises a first gas purification device, a second gas purification device, a purification monitoring device and a processor, and particularly, the processor in the embodiment can be realized by using a PLC (programmable logic controller).
The polluted gas generated by the polluted gas generating source is input from the first input end and output from the first output end of one of the first gas purifying device and the second gas purifying device.
The purification monitoring equipment is connected with the first input end and the first output end and is used for monitoring the difference value of the physical parameters of the gas input by the first input end and the gas output by the first output end;
the processor is electrically connected with the purification monitoring equipment and used for receiving the difference value and triggering the polluted gas to be input from the second input end and output from the second output end of the other one of the first gas purification equipment and the second gas purification equipment when the difference value meets the preset condition.
It should be understood that the number of the gas purifying devices in the present embodiment should be greater than or equal to 2, but the specific number of the gas purifying devices can be selected according to the actual situation, the first and the second in the present embodiment do not represent that only two gas purifying devices are included, but represents that when the purification degree of the current gas purification equipment cannot meet the requirement, the gas purification equipment with better purification degree can be switched, such as one first gas cleaning device, two second gas cleaning devices, the currently used purifying equipment is first gas purifying equipment, when the difference value of the physical parameters of the gas input from the first input end and the gas output from the first output end, which are monitored by the purifying and monitoring equipment, does not accord with the preset condition, it is possible to switch to one of the second gas cleaning apparatuses, for example, to the one of the second gas cleaning apparatuses which has the better current cleaning capability.
It should be understood that the above examples are only illustrative and should not be a limitation to the present embodiment, and in particular, in the following, for convenience of description of the present embodiment, only two gas purification apparatuses are exemplified.
In this embodiment, the system includes a first gas purification device and a second gas purification device that can be switched to each other, and when the difference value meets a preset condition (for example, the pressure difference between the first input end and the first output end is too large), the system triggers the polluted gas to be input from the second input end and output from the second output end of the other one of the first gas purification device and the second gas purification device, so that under the condition that the purification degree of the one of the first gas purification device and the second gas purification device is saturated, the other device is used for processing the polluted gas, the concentration of the emitted gas of an enterprise can be effectively controlled, and the concentration of the emitted gas of the polluted gas is prevented from exceeding the standard.
In a specific embodiment, as shown in fig. 1, the purge monitoring device comprises a differential pressure transmitter 18, the first gas purge device comprises a first activated carbon tank 5, the second gas purge device comprises a second activated carbon tank 17, the physical parameter comprises a pressure differential, and the predetermined condition comprises a monitored pressure differential being greater than a predetermined pressure differential.
In this embodiment, can reduce gaseous pollutants's emission concentration through activated carbon box's adsorption, utilize differential pressure transmitter can high-efficiently monitor the pressure differential of the input of first activated carbon box or second activated carbon box and output, then switch to another activated carbon box when the pressure differential is too high, avoid the activated carbon box that the adsorption degree is saturated to continue to carry out invalid processing to gaseous pollutants, can ensure that gaseous pollutants's emission concentration is not more than the index that the regulatory department stipulated, the efficiency and the continuation of gaseous pollutants processing have been improved.
In a specific embodiment, the treatment system may further comprise an exhaust fan connected to the output ports of the first and second gas purification apparatuses and configured to draw the contaminated gas out of the output ports.
Specifically, as shown in fig. 1, the exhaust fan 7 is located downstream of the activated carbon box, and after the exhaust fan is turned on, the negative pressure is used to extract the polluted gas generated by the polluted gas production source (such as a production workshop and production equipment), and the polluted gas passes through the activated carbon box at the front end of the exhaust fan 7, so that the adsorption effect of the activated carbon on the polluted gas can be used to reduce the emission concentration of the polluted gas.
Further, the processing system may further comprise a switching device, and the processor is specifically configured to trigger the switching device to change the ventilation direction, so as to guide the polluted gas to be input from the second input end and output from the second output end of the other of the first gas purification apparatus and the second gas purification apparatus.
Specifically, the treatment system also comprises an exhaust port (such as a chimney), the gas output by the first output end or the second output end is exhausted by the exhaust port, and the switching device specifically comprises a first three-way valve and a second three-way valve;
the first port, the second port and the third port of the first three-way valve are respectively connected with a pollution gas generating source, a first input end and a second input end;
and a fourth port, a fifth port and a sixth port of the second three-way valve are respectively connected with the row port, the first output end and the second output end.
The three-way valves can switch the pipeline trend, and once the pipeline trend is needed (if the processor monitors that the pressure difference at two ends of the currently used activated carbon box is too high, if the processor monitors that the emission concentration of the pollution gas currently discharged to the atmosphere is too high, if the processor simultaneously monitors that the pressure difference at two ends of the currently used activated carbon box is too high and the emission concentration of the pollution gas currently discharged to the atmosphere is too high), the pipeline trend of the two three-way valves can be controlled and switched by the processor, the activated carbon box through which the gas passes is switched, the differential pressure transmitter is connected with the input end and the output end of the currently used activated carbon box and is used for measuring the differential pressure at two ends of the activated carbon box, so that whether activated carbon adsorption is saturated or not is judged, the exhaust fan is driven by the frequency converter, and the starting, the stopping and the speed of the exhaust fan are controlled by the processor.
Specifically, as shown in fig. 1, a first port of a first three-way valve 6 is connected to a production plant or a production facility, a second port is connected to a first activated carbon tank 5, a third port is connected to a second activated carbon tank 17, a fourth port of a second three-way valve 25 is connected to a discharge port 14, a fifth port is connected to the first activated carbon tank 5, and a sixth port is connected to the second activated carbon tank 17, and a contaminated gas generated in the production plant or the production facility is input from the first port of the first three-way valve 6 and is thus introduced into the first activated carbon tank 5 or the second activated carbon tank 17, for example, assuming that the second port of the first three-way valve 6 is currently in an open state and the third port is currently in a closed state, that a contaminated gas is input from the second port of the first three-way valve 6 to the first activated carbon tank 5, and is input from the fifth port of the second three-way valve 25 after passing through the first activated carbon tank 5, and the fourth port is output and discharged through the discharge port 14 (in this case, the sixth port of the second three-way valve 25 is currently in a closed state, the fifth port is in an open state), when the differential pressure transducer 18 monitors that the difference value of the physical parameters at the two ends of the first activated carbon box 5 meets the preset condition, the second port of the first three-way valve 6 is closed, the third port of the first three-way valve 6 is opened, the fifth port of the second three-way valve 25 is closed, the sixth port of the second three-way valve 25 is opened, the polluted gas is switched to be input from the second activated carbon box 17, and after the adsorption action of the second activated carbon box 25, the polluted gas is input from the sixth port of the second three-way valve 25 and is output from the fourth port.
In this embodiment, the treater can be through auto switch over gaseous processing apparatus of pollution of auto switch over, and gaseous purifier of first gas or second can be in real time, timely and handle gaseous pollutants effectively, avoids the enterprise to receive the punishment of regulatory department because of polluting emission concentration exceeds standard. And through two three-way valves, can simply switch over the trend of pipeline, the discharge direction of polluted gas promptly, in case there is the needs treater then can control the direction of ventilating of switching two three-way valves to the gaseous clarification plant who effectively utilizes to have higher throughput handles polluted gas.
In one embodiment, the treatment system further comprises an online monitoring subsystem for receiving the exhaust gas from the exhaust and monitoring an emission concentration of the exhaust gas.
In the embodiment, the defect that most of the prior art only considers the treatment of the monitored gas or the polluted gas, for example, the treatment is often late after the monitoring exceeds the standard once only considering the monitoring, and the relative data is uploaded to a supervision department when the emission concentration is monitored to exceed the standard, so that the result is penalized by the supervision department; in another example, in the case of processing that focuses only on the contaminated gas, the processing effect cannot be monitored, and it is not known whether the discharge exceeds the standard. Therefore, the monitoring of the polluted gas and the treatment of the polluted gas form a large pollution source closed-loop control system, and the emission concentration of the gas discharged after the treatment can be automatically monitored in real time through the on-line monitoring subsystem while the gas generated by the polluted gas generation source is treated in real time.
Specifically, the on-line monitoring subsystem comprises a gas sampling device, wherein the gas sampling device is arranged on the exhaust port and is used for collecting gas exhausted from the exhaust port;
the on-line monitoring subsystem further comprises an analyzer and a data acquisition instrument, wherein one end of the analyzer is connected with the gas sampling equipment and is used for receiving the gas sample acquired by the gas sampling equipment and analyzing the gas sample to generate an electrical signal;
the other end of the analyzer is connected with the data acquisition instrument and the processor and used for respectively sending the electrical signals to the data acquisition instrument and the processor, the data acquisition instrument is used for sending the electrical signals to an external monitoring department, and the processor is used for carrying out internal analysis on the electrical signals.
In this embodiment, the electrical signals generated after the analysis of the gas sample can be respectively sent to an external monitoring department and the interior of an enterprise, and the interior of the enterprise can analyze the concentration of the polluted gas represented by the electrical signals through a processor, so that corresponding measures are taken to avoid the emission concentration of the polluted gas from exceeding the standard.
Further, the online monitoring subsystem further comprises at least one of a heat tracing pipeline, a preprocessor and an isolator.
One end of the heat tracing pipeline is connected with the gas sampling equipment, the other end of the heat tracing pipeline is connected with the analyzer, and a gas sample collected by the gas sampling equipment is transmitted into the analyzer through the heat tracing pipeline;
one end of the preprocessor is connected with the gas sampling equipment, and the other end of the preprocessor is connected with the analyzer and is used for preprocessing a gas sample collected by the gas sampling equipment and transmitting the preprocessed gas into the analyzer;
one end of the isolator is connected with the analyzer, the other end of the isolator is connected with the processor and the data acquisition instrument, the isolator is used for dividing the electric signals generated by the analyzer into two paths, one path is transmitted to the processor, and the other path is transmitted to the data acquisition instrument.
For example, in a specific embodiment, when the online monitoring subsystem includes a heat trace line and a preprocessor at the same time, one end of the heat trace line is connected to the gas sampling device, the other end of the heat trace line is connected to one end of the preprocessor, and the other end of the preprocessor is connected to the analyzer.
In the embodiment, the heat tracing pipeline can prevent the polluted gas from condensing with liquid, so that the gas can be effectively discharged, the gas sample can be pumped from the gas sampling equipment to the preprocessor through the heat tracing pipeline by utilizing the negative pressure generated by the compressed air through the preprocessor for drying and other preprocessing, the analysis of the effective gas sample by the analyzer is facilitated, and the processed electrical signals can be effectively divided into two paths through the isolator.
The following further describes the present embodiment with reference to fig. 1 by using a more specific example:
the online monitoring subsystem specifically includes a sample gas sampling probe (a specific implementation manner of the gas sampling device in this embodiment, not shown in the drawings), a heat tracing pipeline 15, a preprocessor 16, an analyzer 23, a data acquisition instrument 24, a PLC1 cabinet 2, an HMI (human-machine interface) 9, and an online monitoring station room 1. Wherein the preprocessor 16, the analyzer 23, the data acquisition instrument 24, the PLC processing system (a specific implementation manner of the processor in the embodiment), and the HMI9 are installed inside or outside the online monitoring station room 1, the sample gas sampling probe is installed on the first exhaust port 14-1 to sample gas and is connected with the heat tracing pipeline 15, the other end of the heat tracing pipeline 15 is connected with the preprocessor 16, the preprocessor 16 uses the negative pressure generated by compressed air to pump the sample gas from the sampling probe to the preprocessor 16 through the heat tracing pipeline 15 for preprocessing such as drying, the analyzer 23 is connected with the preprocessor 16, the preprocessed sample gas is sent to the analyzer 23 for analyzing the concentration of the pollution factor, the obtained data is converted into 4-20 mA electrical signals, the electrical signals of the analyzer are connected to an isolator (not shown in the figure) through cables, the isolator is installed in the PLC1 cabinet 2, the isolator divides the 4-20 mA signals into 2 paths, one path is sent to the PLC processing system, and the other path is directly connected to the data acquisition instrument 24. The analyzer 23 is connected with the data acquisition instrument 24, the data acquisition instrument 24 is internally provided with a GPRS module which has a unique IP address and an MN number, and data transmitted by the analyzer 23 can be uploaded to a supervision department, namely a government monitoring platform 27 in the figure, through 4G wireless signals.
In a specific embodiment, the on-line monitoring subsystem in this embodiment may further include a gas supply station connected to the analyzer for supplying the combustion supporting gas and/or the carrier gas to the analyzer for analysis of the gas sample by the analyzer.
Specifically, as shown in fig. 1, the gas supply station is implemented as an integrated hydrogen and nitrogen station 13, the hydrogen and nitrogen station 13 includes a plurality of hydrogen cylinders and a plurality of nitrogen cylinders, wherein the hydrogen cylinders and the nitrogen cylinders are respectively connected in series by a main pipeline to supply gas, and the hydrogen and nitrogen station 13 is connected with an analyzer 23 to provide combustion-supporting gas or carrier gas for the analyzer 23.
In this embodiment, provide the gas supply station, it is different with the mode of placing 1, 2 hydrogen/nitrogen gas steel bottle air supplies in the monitoring station mostly among the prior art, this application provides an integral type gas supply station, can be to hydrogen and nitrogen gas steel bottle centralized management, parallelly connected air feed, concentrated change.
And the embodiment may further include a hydrogen monitoring device, such as H2 (hydrogen) probe 10 shown in fig. 1, which may be specifically disposed on the inner or outer wall of the online monitoring station room 1, and the processor may be further configured to generate an alarm when the hydrogen probe monitors that hydrogen gas exceeds a certain concentration, so as to improve safety.
In a specific implementation manner, the processing system in this embodiment specifically includes a plurality of rows of ports, and a heat tracing pipeline, a preprocessor, an analyzer, and a data acquisition instrument, which are the same in number as the rows of ports and are correspondingly connected.
In this embodiment, with current on-line monitoring system most be directed against single row mouth, and many mills often have a plurality of row mouths, can't monitor the difference simultaneously to a plurality of row mouths, include the heat tracing pipeline the same and corresponding connection with row mouth quantity in this embodiment, preprocessor, analysis appearance and data acquisition appearance, each row mouth connects a preprocessor alone through the heat tracing pipeline that corresponds, an analysis appearance is connected alone to each preprocessor, an data acquisition appearance is connected alone to each analysis appearance, thereby can monitor the gaseous pollutants that a plurality of row mouths discharged simultaneously, analyze, in order to prevent that the gaseous pollutants that each row mouth discharged exceeds standard, the validity of monitoring and processing of enterprise to gaseous pollutants emission has further been improved.
In a specific embodiment, the processor in this embodiment is further configured to generate a prompt message when the monitored emission concentration of the pollutant gas is greater than or equal to a pollution threshold value, wherein the pollution threshold value is less than a standard value specified by an external regulatory authority.
In the embodiment, when the emission concentration of the pollution gas exceeds the pollution threshold, the prompt message is generated, so that the relevant personnel can process the pollution gas in time, for example, production or process adjustment is performed, and the emergency shutdown of a factory is avoided.
In a specific embodiment, the processor is specifically configured to trigger the pollutant gas to be input from the second input end and output from the second output end of the other of the first gas purification apparatus and the second gas purification apparatus when the difference value meets a preset condition and the emission concentration of the pollutant gas is greater than or equal to the pollution threshold value.
In the embodiment, the emission concentration of the polluted gas is greater than or equal to the pollution threshold value as the switching condition of the gas purification equipment, so that on one hand, a closed loop can be formed between the treatment and the monitoring of the polluted gas, and the concentration of the discharged polluted gas can be better controlled; on the other hand, the resource utilization rate can be improved, and the condition of resource waste caused by frequent switching of the gas purification equipment is avoided.
In a specific embodiment, the pollution threshold includes a first pollution threshold and a second pollution threshold, and the processor is specifically configured to generate a prompt message for characterizing the alarm signal when the monitored emission concentration of the pollutant gas is greater than or equal to the first pollution threshold and less than the second pollution threshold; and generating prompt information for triggering the target device to stop when the emission concentration of the polluted gas is monitored to be greater than or equal to the second pollution threshold.
In the embodiment, two-stage alarm prompt is provided, and when the emission concentration exceeds the first pollution threshold but does not exceed the second pollution threshold, the alarm prompt is only given in the form of an alarm signal, so that related personnel are reminded to take measures to adjust the process production system; and when the emission concentration exceeds a second pollution threshold value, triggering the target device to stop so as to avoid the generation of the polluted gas from the source.
In a specific embodiment, the processor is specifically configured to monitor, in real time, the average emission concentration of the pollutant gas within a preset time range through the sliding window, and the preset time range is smaller than a standard time range specified by an external regulatory authority.
In the embodiment, the average emission concentration of the polluted gas can be monitored in real time in a sliding window mode, the preset time range is set to be smaller than the standard time range specified by an external supervision department, early warning data which is stricter and more advanced than the check of the supervision department can be obtained, and the emission exceeding standard can be effectively prevented from being punished and a factory stops production.
The overall processing procedure of the processing system in this embodiment is further described below with reference to fig. 1:
the production plant 29 is a source for generating a contaminated gas, and the contaminated gas generated by the production plant is exhausted from the exhaust port after being adsorbed by the first activated carbon tank 5 or the second activated carbon tank 17 when the exhaust fan 7 is started, specifically, the differential pressure transmitter 18 may monitor a pressure difference between two ends of the currently used activated carbon tank, and when the pressure difference exceeds a preset value, the differential pressure transmitter may switch to another activated carbon tank through the three-way valve 1(6) and the three-way valve 2, as shown in the drawing, the contaminated gas is exhausted from the exhaust port after being adsorbed by the first activated carbon tank 5, but the differential pressure transmitter 18 monitors that the pressure difference between two ends of the first activated carbon tank 5 is too high, and thus, the differential pressure transmitter switches to the second activated carbon tank 17 to adsorb the contaminated gas and then exhausts the contaminated gas to the atmosphere.
To further avoid overproof gas emissions, the emission of polluting gases into the atmosphere may be further monitored. Specifically, a gas sampling device (such as a probe for sampling a gas sample of the pollution gas) is arranged on the discharge port, the sampled gas sample is conveyed into a preprocessor 16 through a heat tracing pipeline 15 for preprocessing such as drying, and then the preprocessed gas sample is conveyed into an analyzer 23, meanwhile, a gas supply station, namely a hydrogen and nitrogen gas station 13, conveys combustion-supporting gas and carrier gas to the analyzer in a centralized manner, and the analyzer 23 can analyze the concentration of the pollution factor of the gas sample.
The analyzer 23 converts the data obtained after analyzing the gas sample into an electrical signal, and divides the electrical signal into two paths through an isolator (arranged in a PLC1 cabinet (2)), one path is sent to a processor inside an enterprise through an ethernet, specifically a PLC processing system in the embodiment, the other path is sent to the data acquisition instrument 24, and the data acquisition instrument is sent to a government monitoring platform through a GPRS (28).
The PLC processing system can carry out logic and operation processing on the concentration data, the PLC processing system calculates the average value like the data acquisition instrument 24, and the average value calculated by the PLC processing system is used as the internal reference and early warning of the factory, so the PLC processing system has to have higher standard than the data calculated by the data acquisition instrument 24 and sent to a supervision department, and can carry out early warning on the inside in advance.
For this reason, the present embodiment employs the average value of the sliding window as the observation value inside the enterprise. For example, if the regulatory authority determines whether the enterprise emissions exceed the threshold of a mg/m3 according to whether the average hourly value exceeds the threshold, the enterprise sets the preset time range to be smaller than the standard time range (1 hour) specified by the regulatory authority, such as the PLC processing system calculates the average emission concentration for 45 minutes, and continuously calculates the current average emission concentration in the form of a sliding window, such as the average emission concentration from 1 minute to 45 minutes calculated in the last minute, the average emission concentration from 2 minutes to 46 minutes calculated in the current, and the average emission concentration from 3 minutes to 46 minutes calculated in the next minute, so that data with higher standards and timeliness than those of the external regulatory authority can be obtained.
In addition, the embodiment sets two levels of pollution thresholds, the first pollution threshold is set to be 0.8A, the second pollution threshold is set to be 0.9A, if the average emission concentration calculated in real time reaches 0.8A, a yellow alarm is given, an enterprise is warned, the enterprise is reminded to change the production process to reduce the emission concentration of the pollution gas, and if the average emission concentration calculated during fruit time reaches 0.9A, a red alarm is generated, and prompt information for triggering the shutdown (such as production equipment) of the target device is generated.
Meanwhile, in order to better treat the polluted gas, a pollution threshold value can be further set, and the PLC processing system can switch the first three-way valve 6 and the second three-way valve 25 only when monitoring that the emission concentration of the polluted gas reaches the pollution threshold value and the differential pressure value received by the differential pressure transmitter 18 exceeds the preset pressure value at the same time, so that the current first activated carbon box 5 is switched to the second activated carbon box 17 with better purification capacity to adsorb the polluted gas generated by a production workshop or production equipment 29.
In addition, in order to enable enterprises to master relevant information of the polluted gas discharged to the atmosphere in real time, a temperature difference flow transmitter 8 can be further installed on the discharge port and used for collecting electric signals of the temperature, the pressure and the flow of the discharged polluted gas, the temperature difference flow transmitter 8 is connected with an isolator in the PLC1 cabinet 2, the isolator divides the electric signals of the temperature, the pressure and the flow into two paths, one path is connected to the analyzer 3, the other path is connected with an IO (input output) module in the PLC1 cabinet 2, the differential pressure transmitter 18 is connected with the IO module in the PLC1 cabinet 2, and differential pressure signals of the activated carbon box are transmitted to a PLC processing system in the PLC1 cabinet 2.
The switch in the PLC1 cabinet 2 is connected to the ethernet communication module for communication and data exchange with other systems and devices in the enterprise, such as the fire alarm system 12, the process PLC/DCS system 11, the plant information system 10, etc.
The host computer of HMI is connected with the exchanger in PLC1 cabinet 2, carries out Ethernet communication to show the polluted gas emission index, and the temperature, pressure, flow that present polluted gas discharged, the differential pressure of the active carbon case that uses at present, exhaust fan operation etc. data. The exchanger is connected with the HMI, the frequency converter, the process production PLC/DCS system and the factory information system through Ethernet cables, Ethernet communication is carried out, all data monitored and controlled on line are transmitted to the production workshop, and early warning signals can be sent to the production workshop in real time, so that the production workshop can master the emission and treatment states of the polluted gas at any time so as to adjust the production process in time in the production workshop.
In practice, the number of the discharge ports may be set according to the requirement, and particularly, for the embodiment shown in fig. 1, the embodiment specifically includes 4 discharge ports (i.e., the first discharge port 14-1, the second discharge port 14-2, the third discharge port 14-3, and the fourth discharge port 14-4 in fig. 1), each of which is provided with a corresponding thermo-hydraulic pressure flow transmitter, a heat tracing pipeline, a preprocessor 16 (i.e., the first preprocessor 16-1, the second preprocessor 16-2, the third preprocessor 16-3, and the fourth preprocessor 16-4 in fig. 1), an analyzer 23 (i.e., the first analyzer 23-1, the second analyzer 23-2, the third analyzer 23-3, and the fourth analyzer 23-4 in fig. 1), and a data collector 24 (i.e., the first data collector 24-1, the second data collector 24-2, the third analyzer 23-3, and the fourth analyzer 23-4 in fig. 1), The third data acquisition instrument 24-3 and the fourth data acquisition instrument 24-4) so as to monitor each row of ports in time and avoid the overproof of the polluted gas discharged by each row of ports.
In the embodiment, the polluted gas treatment, the polluted gas monitoring, the polluted gas standard exceeding early warning and the like are taken into consideration together to form a control closed loop, so that the environmental risk can be better controlled, and the hydrogen station can be adopted to supply gas for the analyzer in a centralized manner, so that the hydrogen station is managed in a centralized manner and is convenient to maintain. In addition, the communication structure is comprehensive in the embodiment, the network can be simultaneously performed with the monitoring platform of the external monitoring department and the system in the enterprise, the standards are unified, and the data sharing is comprehensive.
In addition, in the embodiment, a moving average value (that is, the monitoring average concentration is calculated by a sliding window) is used to early warn by a standard stricter than that of a supervision department, and the concentration of the emission of the pollutant gas exceeds the standard, so that the pollutant gas processing system in the embodiment can monitor the emission data on line, control the emission concentration not to exceed the standard, and ensure the maximization of the production benefit.
In order to better understand the contaminated gas treatment system in the present embodiment, a specific manner of performing the contaminated gas treatment by using the treatment system is given below, and as shown in fig. 2, the specific manner of performing the contaminated gas treatment includes:
and 202, triggering the polluted gas to be input from a second input end and output from a second output end of the other one of the first gas purification equipment and the second gas purification equipment when the difference value meets the preset condition.
In a specific embodiment, the first gas cleaning device comprises a first activated carbon tank (e.g. first activated carbon tank 5 as shown in fig. 1, and the second gas cleaning device comprises a second activated carbon tank (e.g. second activated carbon tank 17 as shown, the physical parameter comprises a pressure difference, and the predetermined condition comprises that the monitored pressure difference is greater than a predetermined pressure difference.
In this embodiment, can be through the pressure differential of the input of monitoring first gaseous clarification plant or second gaseous clarification plant and output, then switch over to another gaseous clarification plant when pressure differential is too high, avoid the gaseous clarification plant that the adsorption degree is saturated to continue to carry out invalid treatment to gaseous pollutants, can ensure that gaseous pollutants's emission concentration does not exceed the index that the regulatory department stipulated, improved the efficiency and the continuation of gaseous pollutants processing.
In a specific embodiment, the processing method further includes:
monitoring an emission concentration of gas emitted from the first output or the second output.
It should be understood that the monitoring is specifically real-time monitoring, which may be performed before step 201, during the execution of steps 201 and 202, or after the end of steps 201 and 202.
In the embodiment, the defect that most of the prior art only considers the treatment of the monitored gas or the polluted gas, for example, the treatment is often late after the monitoring exceeds the standard once only considering the monitoring, and the relative data is uploaded to a supervision department when the emission concentration is monitored to exceed the standard, so that the result is penalized by the supervision department; in another example, in the case of processing that focuses only on the contaminated gas, the processing effect cannot be monitored, and it is not known whether the discharge exceeds the standard. Therefore, the present embodiment combines the monitoring of the contaminated gas and the processing of the contaminated gas into a large closed-loop control system of the contaminated source, which can monitor the emission concentration of the gas discharged after the processing in real time while processing the gas generated by the contaminated gas generation source in real time.
In a specific embodiment, as shown in fig. 3, the processing manner further includes:
In a specific embodiment, step 301 is followed by step 302: the sample gas is pre-treated, and step 303 is to analyze the pre-treated sample gas.
In this embodiment, the electrical signals generated after the analysis of the gas sample can be respectively sent to an external monitoring department and the interior of an enterprise, and the interior of the enterprise can analyze the concentration of the polluted gas represented by the electrical signals through a processor, so that corresponding measures are taken to avoid the emission concentration of the polluted gas from exceeding the standard.
In this embodiment, the interference of humidity or other factors can be discharged by preprocessing the discharged polluted gas, and the effectiveness of analyzing the gas sample is improved.
In a specific embodiment, step 304 is followed by the following steps:
and 305, generating a prompt message when the emission concentration of the pollution gas is monitored to be greater than or equal to the pollution threshold value.
Wherein the contamination threshold is less than a standard value specified by an external regulatory authority.
Specifically, the contamination threshold includes a first contamination threshold and a second contamination threshold, and step 305 specifically includes:
when the emission concentration of the polluted gas is monitored to be greater than or equal to a first pollution threshold value and smaller than a second pollution threshold value, generating prompt information for representing an alarm signal; and generating prompt information for triggering the target device to stop when the emission concentration of the polluted gas is monitored to be greater than or equal to the second pollution threshold.
In this embodiment, when the emission concentration of the pollutant gas exceeds the pollution threshold, prompt information is generated, which is beneficial for relevant personnel to perform timely processing, such as production or process adjustment, emergency shutdown of a factory is avoided at unnecessary time, and the pollution threshold is set to be smaller than a standard value specified by an external monitoring department, so that an enterprise can adjust in advance, and the emission concentration of the pollutant is prevented from exceeding the standard.
In a specific embodiment, the contaminated gas in this embodiment is discharged from a plurality of discharge ports after being outputted from the first output port or the second output port, so that the discharge concentration of the gas discharged from each discharge port is specifically monitored.
In this embodiment, with current on-line monitoring system most be directed against single row mouth, and many mills often have a plurality of row mouths, can't monitor the difference simultaneously to a plurality of row mouths, include the heat tracing pipeline the same and corresponding connection with row mouth quantity in this embodiment, preprocessor, analysis appearance and data acquisition appearance, each row mouth connects a preprocessor alone through the heat tracing pipeline that corresponds, an analysis appearance is connected alone to each preprocessor, an data acquisition appearance is connected alone to each analysis appearance, thereby can monitor the gaseous pollutants that a plurality of row mouths discharged simultaneously, analyze, in order to prevent that the gaseous pollutants that each row mouth discharged exceeds standard, the validity of monitoring and processing of enterprise to gaseous pollutants emission has further been improved.
In a specific embodiment, step 203 specifically includes:
and when the difference value meets the preset condition and the emission concentration is greater than or equal to the pollution threshold value, triggering the polluted gas to be input from the second input end and output from the second output end of the other one of the first gas purification equipment and the second gas purification equipment.
In the embodiment, the emission concentration of the polluted gas is greater than or equal to the pollution threshold value as the switching condition of the gas purification equipment, so that on one hand, a closed loop can be formed between the treatment and the monitoring of the polluted gas, and the concentration of the discharged polluted gas can be better controlled; on the other hand, the resource utilization rate can be improved, and the condition of resource waste caused by frequent switching of the gas purification equipment is avoided.
In a specific embodiment, the emission concentration of the gas emitted from the first output or the second output is monitored in real time through a sliding window.
In the embodiment, the average emission concentration of the polluted gas can be monitored in real time in a sliding window mode, the preset time range is set to be smaller than the standard time range specified by an external supervision department, early warning data which is stricter and more advanced than the check of the supervision department can be obtained, and the emission exceeding standard can be effectively prevented from being punished and a factory stops production.
The following describes the overall flow of the processing method in this embodiment by a specific example:
as shown in fig. 4, after the production vehicle or the production equipment generates the pollution gas, the pollution gas is adsorbed by the activated carbon box and then is discharged to the atmosphere through the discharge port.
In one case, the activated carbon boxes can be switched through steps 201 and 202, and after the activated carbon boxes are switched, the activated carbon boxes which are saturated are replaced to realize the treatment of the activated carbon boxes, so that the activated carbon boxes with strong adsorption capacity can be supplied timely.
In another case, the switching of the activated carbon tank may be performed in combination with the monitoring result of step 202 and the monitoring of the pollution gas discharged into the atmosphere. Specifically, a gas sampling device such as a sampling probe is arranged on the discharge port, gas sampling is performed in step 301, then step 302 is performed, the sampled gas sample is conveyed into a preprocessor 16 through a heat tracing pipeline 15 shown in fig. 1 for preprocessing such as drying, the preprocessed gas sample is conveyed into an analyzer 23, meanwhile, a gas supply station, namely a hydrogen gas nitrogen station 13, conveys combustion-supporting gas and carrier gas to the analyzer in a centralized manner, and the analyzer 23 can analyze the concentration of pollution factors on the gas sample.
Then, step 303 is executed, the data obtained after the gas sample is analyzed by the analyzer 23 is converted into an electrical signal, in step 304, the electrical signal is divided into two paths by the isolator, one path is sent to a processor inside an enterprise through the ethernet, specifically, a PLC processing system in this embodiment, the other path is sent to the data acquisition instrument 24, and the data acquisition instrument is sent to the government monitoring platform 27 through the GPRS (28).
In step 304, the PLC processing system can perform logical and arithmetic processing on the concentration data, the PLC processing system calculates an average value as with the data acquisition instrument 24, and the average value calculated by the PLC processing system is used as a reference and an early warning for the inside of the plant, so that the standard of the data calculated by the data acquisition instrument 24 and sent to the supervision department must be higher than that of the data, and the inside can be early warned in advance through step 305.
For this reason, the present embodiment employs the average value of the sliding window as the observation value inside the enterprise. For example, if the regulatory authority determines whether the enterprise emissions exceed the threshold of a mg/m3 according to whether the average hourly value exceeds the threshold, the enterprise sets the preset time range to be smaller than the standard time range (1 hour) specified by the regulatory authority, such as the PLC processing system calculates the average emission concentration for 45 minutes, and continuously calculates the current average emission concentration in the form of a sliding window, such as the average emission concentration from 1 minute to 45 minutes calculated in the last minute, the average emission concentration from 2 minutes to 46 minutes calculated in the current, and the average emission concentration from 3 minutes to 46 minutes calculated in the next minute, so that data with higher standards and timeliness than those of the external regulatory authority can be obtained.
In addition, the embodiment sets two levels of pollution thresholds, the first pollution threshold is set to be 0.8A, the second pollution threshold is set to be 0.9A, if the average emission concentration calculated in real time reaches 0.8A, yellow alarm is given, an enterprise is warned, the enterprise is reminded to change the production process to reduce the emission concentration of the pollution gas, if the average emission concentration calculated during fruit time reaches 0.9A, red alarm is generated, and prompt information for triggering the shutdown of the target device (such as production equipment) is generated.
When the concentration of the discharged gas is monitored to be higher and the currently used activated carbon tank is monitored to be saturated through step 202, the specific step of switching the activated carbon tank in step 202 is executed.
While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the utility model is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the utility model, and these changes and modifications are within the scope of the utility model.
Claims (10)
1. A contaminated gas treatment system, comprising: the device comprises a first gas purification device, a second gas purification device, a purification monitoring device and a processor;
the polluted gas generated by the polluted gas generating source is input from a first input end and output from a first output end of one of the first gas purification equipment and the second gas purification equipment;
the purification monitoring equipment is connected with the first input end and the first output end and is used for detecting the difference value of the physical parameters of the gas input by the first input end and the gas output by the first output end;
the processor is electrically connected with the purification monitoring equipment and used for receiving the difference value and triggering the polluted gas to be input from a second input end and output from a second output end of the other one of the first gas purification equipment and the second gas purification equipment when the difference value meets a preset condition.
2. The contaminated gas treatment system of claim 1, wherein the purge monitoring device comprises a differential pressure transmitter, the first gas purging device comprises a first activated carbon tank, the second gas purging device comprises a second activated carbon tank, the physical parameter comprises a pressure differential, and the predetermined condition comprises a detected pressure differential being greater than a predetermined pressure differential; and/or the presence of a gas in the gas,
the treatment system further comprises an exhaust fan, wherein the exhaust fan is connected with the output ports of the first gas purification equipment and the second gas purification equipment and is used for pumping the polluted gas out of the output ports.
3. The system of claim 1, further comprising a switching device, wherein the processor is specifically configured to trigger the switching device to change the direction of ventilation to direct the contaminated gas to be input from the second input and output of the other of the first and second gas purification apparatuses.
4. The system of claim 3, further comprising a discharge port through which the gas output from the first output port or the second output port is discharged, wherein the switching device comprises a first three-way valve and a second three-way valve;
a first port, a second port and a third port of the first three-way valve are respectively connected with the pollution gas generating source, the first input end and the second input end;
and a fourth port, a fifth port and a sixth port of the second three-way valve are respectively connected with the row port, the first output end and the second output end.
5. The contaminated gas treatment system of claim 1, further comprising an exhaust port through which gas output from the first output or the second output is exhausted;
the treatment system also comprises an online monitoring subsystem, wherein the online monitoring subsystem is used for receiving the gas discharged from the discharge port and monitoring the discharge concentration of the discharged gas.
6. The contaminated gas treatment system of claim 5, wherein said on-line monitoring subsystem includes a gas sampling device mounted to said exhaust port for collecting gas exhausted from said exhaust port;
the online monitoring subsystem further comprises an analyzer and a data acquisition instrument, wherein one end of the analyzer is connected with the gas sampling equipment and is used for receiving a gas sample acquired by the gas sampling equipment and analyzing the gas sample to generate an electrical signal;
the other end of the analyzer is connected with the data acquisition instrument and the processor and used for sending the electrical signals to the data acquisition instrument and the processor respectively, the data acquisition instrument is used for sending the electrical signals to an external monitoring department, and the processor is used for carrying out internal analysis on the electrical signals to obtain emission concentration.
7. The contaminated gas treatment system of claim 6, wherein the online monitoring subsystem further comprises at least one of a heat trace line, a preconditioner, and an isolator;
one end of the heat tracing pipeline is connected with the gas sampling equipment, the other end of the heat tracing pipeline is connected with the analyzer, and the gas sample collected by the gas sampling equipment is transmitted into the analyzer through the heat tracing pipeline;
one end of the preprocessor is connected with the gas sampling equipment, the other end of the preprocessor is connected with the analyzer, and the preprocessor is used for preprocessing the gas sample collected by the gas sampling equipment and transmitting the preprocessed gas into the analyzer;
one end of the isolator is connected with the analyzer, the other end of the isolator is connected with the processor and the data acquisition instrument, the isolator is used for dividing the electrical signals generated by the analyzer into two paths, one path is transmitted to the processor, and the other path is transmitted to the data acquisition instrument.
8. The contaminated gas treatment system of claim 6, wherein the on-line monitoring subsystem further comprises a gas supply station connected to the analyzer for providing a combustion supporting gas and/or carrier gas to the analyzer for analysis of the gas sample by the analyzer; and/or the presence of a gas in the gas,
the processing system specifically comprises a plurality of rows of ports, and a heat tracing pipeline, a preprocessor, an analyzer and a data acquisition instrument which are in the same number as the rows of ports and are correspondingly connected.
9. The pollutant gas treatment system of claim 5, wherein the processor is further configured to generate a prompt message when the pollutant gas emission concentration is monitored to be greater than or equal to a pollution threshold, the pollution threshold being less than an external regulatory agency specified value;
and/or the presence of a gas in the gas,
the processor is specifically configured to trigger the contaminated gas to be input from a second input end and output from a second output end of the other of the first gas purification apparatus and the second gas purification apparatus when the difference value meets a preset condition and the emission concentration of the contaminated gas is greater than or equal to the contamination threshold.
10. The contaminated gas treatment system of claim 9, wherein the contamination threshold comprises a first contamination threshold and a second contamination threshold, the processor being configured to generate a prompt for characterizing an alarm signal when the emission concentration of the contaminated gas is greater than or equal to the first contamination threshold and less than the second contamination threshold; generating prompt information for triggering the target device to stop when the emission concentration of the polluted gas is detected to be greater than or equal to the second pollution threshold; and/or the presence of a gas in the gas,
the processor is specifically used for monitoring the average emission concentration of the polluted gas in a preset time range in real time through a sliding window, and the preset time range is smaller than a time range specified by an external supervision department.
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