CN117138541B - VOCs mixed waste gas separation and recovery method and device - Google Patents
VOCs mixed waste gas separation and recovery method and device Download PDFInfo
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- 239000012855 volatile organic compound Substances 0.000 title claims abstract description 466
- 238000011084 recovery Methods 0.000 title claims abstract description 450
- 238000000926 separation method Methods 0.000 title claims abstract description 305
- 239000007789 gas Substances 0.000 title claims abstract description 214
- 239000010812 mixed waste Substances 0.000 title claims abstract description 95
- 238000000034 method Methods 0.000 title claims abstract description 35
- 230000005494 condensation Effects 0.000 claims abstract description 142
- 238000009833 condensation Methods 0.000 claims abstract description 142
- 238000001179 sorption measurement Methods 0.000 claims abstract description 133
- 239000002912 waste gas Substances 0.000 claims abstract description 120
- 238000001514 detection method Methods 0.000 claims abstract description 72
- 238000004458 analytical method Methods 0.000 claims abstract description 20
- 238000004422 calculation algorithm Methods 0.000 claims abstract description 19
- 230000003213 activating effect Effects 0.000 claims abstract description 15
- 238000004088 simulation Methods 0.000 claims description 23
- 239000003463 adsorbent Substances 0.000 claims description 14
- 238000012512 characterization method Methods 0.000 claims description 11
- 238000004364 calculation method Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 238000005457 optimization Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 9
- 230000006870 function Effects 0.000 description 14
- 239000002594 sorbent Substances 0.000 description 6
- 238000013528 artificial neural network Methods 0.000 description 4
- 239000000470 constituent Substances 0.000 description 4
- 238000004064 recycling Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/30—Controlling by gas-analysis apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01D2257/00—Components to be removed
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Abstract
The invention discloses a VOCs mixed waste gas separation and recovery method and device, and relates to the field of waste gas treatment, wherein the method comprises the following steps: obtaining target exhaust gas detection data; calculating the target exhaust gas VOCs ratio according to the VOCs ratio analysis formula and the exhaust gas composition data; judging whether the VOCs ratio of the target waste gas is larger than a preset VOCs ratio; if the VOCs ratio of the target waste gas is larger than the preset VOCs ratio, generating an adsorption condensation recovery instruction; activating an adsorption condensation recovery algorithm, and carrying out separation recovery decision on target VOCs mixed waste gas by combining target waste gas detection data to obtain a target separation recovery decision; and carrying out VOCs separation and recovery on the target VOCs mixed waste gas according to the target separation and recovery decision. The technical problem of VOCs separation recovery accuracy of VOCs mixed waste gas is low among the prior art, and the VOCs separation recovery effect that leads to VOCs mixed waste gas is poor is solved.
Description
Technical Field
The invention relates to the field of waste gas treatment, in particular to a VOCs mixed waste gas separation and recovery method and device.
Background
The VOCs mixed offgas refers to offgas composed of a plurality of Volatile Organic Compounds (VOCs). The VOCs mixed waste gas has great harm to human health and ecological environment. VOCs separation and recovery are important ways to treat VOCs mixed waste gas. In the prior art, the VOCs of the mixed waste gas of VOCs are separated and recycled with low accuracy, so that the VOCs of the mixed waste gas of VOCs are separated and recycled with poor effect.
Disclosure of Invention
The application provides a VOCs mixed waste gas separation and recovery method and device. The technical problem of VOCs separation recovery accuracy of VOCs mixed waste gas is low among the prior art, and the VOCs separation recovery effect that leads to VOCs mixed waste gas is poor is solved.
In view of the above problems, the present application provides a method and apparatus for separating and recovering VOCs mixed exhaust gas.
In a first aspect, the present application provides a method for separating and recovering mixed exhaust gas of VOCs, where the method is applied to a device for separating and recovering mixed exhaust gas of VOCs, the device includes an exhaust gas detection end and an exhaust gas separation and recovery control end, and the method includes: detecting target VOCs mixed waste gas according to the waste gas detection end to obtain target waste gas detection data, wherein the target waste gas detection data comprise waste gas component data and waste gas PH value data; constructing a VOCs ratio analysis formula, and calculating a target exhaust gas VOCs ratio according to the VOCs ratio analysis formula and the exhaust gas composition data; judging whether the target exhaust gas VOCs ratio is larger than a preset VOCs ratio; if the target exhaust gas VOCs ratio is greater than the preset VOCs ratio, generating an adsorption condensation recovery instruction; activating an adsorption condensation recovery algorithm based on the adsorption condensation recovery instruction, and carrying out separation recovery decision on the target VOCs mixed waste gas by combining the target waste gas detection data to obtain a target separation recovery decision; transmitting the target separation and recovery decision to the waste gas separation and recovery control end, and carrying out VOCs separation and recovery on the target VOCs mixed waste gas according to the target separation and recovery decision.
In a second aspect, the present application further provides a VOCs mixed exhaust gas separation recovery apparatus, wherein the apparatus includes an exhaust gas detection end and an exhaust gas separation recovery control end, the apparatus further comprising: the waste gas detection module is used for detecting target VOCs mixed waste gas according to the waste gas detection end to obtain target waste gas detection data, wherein the target waste gas detection data comprise waste gas component data and waste gas pH value data; the ratio calculation module is used for constructing a VOCs ratio analysis formula and calculating a target exhaust gas VOCs ratio according to the VOCs ratio analysis formula and the exhaust gas composition data; a ratio judgment module for judging whether the target exhaust gas VOCs ratio is greater than a preset VOCs ratio; the adsorption condensation recovery instruction generation module is used for generating an adsorption condensation recovery instruction if the target exhaust gas VOCs ratio is greater than the preset VOCs ratio; the adsorption condensation recovery decision module is used for activating an adsorption condensation recovery algorithm based on the adsorption condensation recovery instruction, and combining the target waste gas detection data to carry out separation recovery decision on the target VOCs mixed waste gas so as to obtain a target separation recovery decision; and the separation and recovery module is used for transmitting the target separation and recovery decision to the waste gas separation and recovery control end, and carrying out VOCs separation and recovery on the target VOCs mixed waste gas according to the target separation and recovery decision.
One or more technical solutions provided in the present application have at least the following technical effects or advantages:
detecting target VOCs mixed waste gas through a waste gas detection end to obtain target waste gas detection data; calculating the target exhaust gas VOCs ratio according to the VOCs ratio analysis formula and the exhaust gas component data in the target exhaust gas detection data; judging whether the VOCs ratio of the target waste gas is larger than a preset VOCs ratio; if the VOCs ratio of the target waste gas is larger than the preset VOCs ratio, generating an adsorption condensation recovery instruction; activating an adsorption condensation recovery algorithm, and carrying out separation recovery decision on target VOCs mixed waste gas by combining target waste gas detection data to obtain a target separation recovery decision; transmitting the target separation and recovery decision to the waste gas separation and recovery control end, and carrying out VOCs separation and recovery on the target VOCs mixed waste gas according to the target separation and recovery decision. The VOCs separation and recovery accuracy of the VOCs mixed waste gas is improved, and the VOCs separation and recovery quality of the VOCs mixed waste gas is improved.
The foregoing description is only an overview of the technical solutions of the present application, and may be implemented according to the content of the specification in order to make the technical means of the present application more clearly understood, and in order to make the above-mentioned and other objects, features and advantages of the present application more clearly understood, the following detailed description of the present application will be given.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the following description will briefly explain the drawings of the embodiments of the present invention. It is apparent that the figures in the following description relate only to some embodiments of the invention and are not limiting of the invention.
FIG. 1 is a schematic flow chart of a VOCs mixed waste gas separation and recovery method;
fig. 2 is a schematic structural diagram of a device for separating and recovering waste gas mixed with VOCs.
Detailed Description
The application provides a VOCs mixed waste gas separation and recovery method and device. The technical problem of VOCs separation recovery accuracy of VOCs mixed waste gas is low among the prior art, and the VOCs separation recovery effect that leads to VOCs mixed waste gas is poor is solved. The VOCs separation and recovery accuracy of the VOCs mixed waste gas is improved, and the VOCs separation and recovery quality of the VOCs mixed waste gas is improved.
Example 1
Referring to fig. 1, the present application provides a method for separating and recovering mixed exhaust gas of VOCs, wherein the method is applied to a device for separating and recovering mixed exhaust gas of VOCs, the device includes an exhaust gas detection end and an exhaust gas separation and recovery control end, and the method specifically includes the following steps:
detecting target VOCs mixed waste gas according to the waste gas detection end to obtain target waste gas detection data, wherein the target waste gas detection data comprise waste gas component data and waste gas PH value data;
constructing a VOCs ratio analysis formula, and calculating a target exhaust gas VOCs ratio according to the VOCs ratio analysis formula and the exhaust gas composition data;
wherein, the VOCs ratio analysis formula is:
wherein R is VOCs Characterization of target exhaust VOCs ratio, X VOCs Characterization of VOCs concentration, X in exhaust gas composition data j And representing the concentration corresponding to the J-th exhaust gas component index in the exhaust gas component data, wherein J is a positive integer, J belongs to J, and J is the total number of the exhaust gas component indexes corresponding to the exhaust gas component data.
And detecting the target VOCs mixed waste gas through the waste gas detection end to obtain target waste gas detection data. The waste gas detection end comprises a waste gas component detector and a waste gas PH value detector in the prior art. Target VOCs mixes waste gas can use a VOCs mixes waste gas separation recovery unit and carries out arbitrary VOCs that intelligent VOCs separated recovery. The target exhaust gas detection data includes exhaust gas composition data and exhaust gas acidity-basicity data. The exhaust gas composition data includes a plurality of concentrations corresponding to a plurality of exhaust gas composition indicators of the target VOCs mixed exhaust gas. For example, the plurality of exhaust gas constituent indicators include VOCs, suspended particulate matter, carbon dioxide, etc. corresponding to the target VOCs mixed exhaust gas. The exhaust gas ph data includes the ph of the target VOCs mixed exhaust gas.
Further, the exhaust gas component data is input into the VOCs ratio analysis formula to obtain the target exhaust gas VOCs ratio. Wherein, the VOCs ratio analysis formula is:
wherein R is VOCs Target exhaust VOCs ratio for output; x is X VOCs The concentration of VOCs in the inputted exhaust gas component data; x is X j J is a positive integer, J is a total number of exhaust gas constituent indexes corresponding to the exhaust gas constituent data, that is, J is a total number of exhaust gas constituent indexes of the target VOCs mixed exhaust gas.
Judging whether the target exhaust gas VOCs ratio is larger than a preset VOCs ratio;
if the target exhaust gas VOCs ratio is greater than the preset VOCs ratio, generating an adsorption condensation recovery instruction;
a determination is made as to whether the target exhaust VOCs ratio is greater than the preset VOCs ratio. And if the target exhaust gas VOCs ratio is greater than the preset VOCs ratio, the VOCs mixed exhaust gas separating and recovering device automatically generates an adsorption condensation recovering instruction. Wherein the preset VOCs ratio is an exhaust VOCs ratio threshold value preset and determined by the VOCs mixed exhaust gas separation and recovery device. The adsorption condensation recovery instruction is instruction information for representing that the VOCs ratio of the target waste gas is larger than the preset VOCs ratio, the concentration of VOCs in the target VOCs mixed waste gas is relatively high, and the target VOCs mixed waste gas needs to be subjected to VOCs separation recovery by adopting an adsorption condensation recovery method. The adsorption condensation recovery method is a method for separating and recovering VOCs in the VOCs mixed waste gas by utilizing an adsorbent to adsorb the VOCs in the VOCs mixed waste gas and then desorbing the VOCs from the adsorbent through condensation. The adsorption condensation recovery method is suitable for separating and recovering VOCs in the VOCs mixed waste gas with higher concentration of VOCs.
And judging whether the VOCs ratio of the target waste gas is larger than the preset VOCs ratio, and adaptively generating an adsorption condensation recovery instruction, so that the VOCs separation recovery accuracy of the VOCs mixed waste gas is improved.
Activating an adsorption condensation recovery algorithm based on the adsorption condensation recovery instruction, and carrying out separation recovery decision on the target VOCs mixed waste gas by combining the target waste gas detection data to obtain a target separation recovery decision;
constructing an adsorption condensation recovery control space based on the target waste gas detection data;
obtaining a multidimensional adsorption condensation recovery control index, wherein the multidimensional adsorption condensation recovery control index comprises an adsorbent type, an adsorbent dosage, a condensation temperature and a condensation time;
performing decision record backtracking on VOCs separation and recovery based on the target waste gas detection data and the multidimensional adsorption condensation recovery control index to obtain a decision record library of VOCs separation and recovery;
clustering the VOCs separation recovery decision record library according to the multidimensional adsorption condensation recovery control index to obtain a plurality of waste gas recovery control index records;
based on the plurality of waste gas recovery control index records, carrying out decision expansion according to the multidimensional adsorption condensation recovery control index to obtain an expansion separation recovery decision record library;
and generating the adsorption condensation recovery control space based on the VOCs separation recovery decision record library and the expansion separation recovery decision record library.
And activating an adsorption condensation recycling algorithm according to the adsorption condensation recycling instruction. The adsorption condensation recovery algorithm comprises: and carrying out decision record collection on VOCs separation and recovery according to the target waste gas detection data and the multidimensional adsorption condensation recovery control index, and obtaining a decision record library for VOCs separation and recovery. Wherein the multidimensional adsorption condensation recovery control index comprises an adsorbent type, an adsorbent dosage, a condensation temperature and a condensation time. The VOCs separation recovery decision record repository comprises a plurality of VOCs separation recovery decision records. Each VOCs separation recovery decision record includes historical exhaust gas detection data, and historical sorbent type parameters, historical sorbent dosage parameters, historical condensing temperature parameters, and historical condensing time parameters corresponding to the historical exhaust gas detection data.
Further, the VOCs separation recovery decision record library is clustered according to the multidimensional adsorption condensation recovery control index, and a plurality of waste gas recovery control index records are obtained. The plurality of waste gas recovery control index records comprise historical adsorbent type parameter records, historical adsorbent dosage parameter records, historical condensing temperature parameter records and historical condensing time parameter records corresponding to the VOCs separation recovery decision record library. The historical sorbent type parameter record comprises a plurality of historical sorbent type parameters within the VOCs separation recovery decision record library. Similarly, the historical adsorbent dosage parameter record, the historical condensing temperature parameter record and the historical condensing time parameter record respectively comprise a plurality of historical adsorbent dosage parameters, a plurality of historical condensing temperature parameters and a plurality of historical condensing time parameters in the VOCs separation and recovery decision record library.
Further, based on the plurality of exhaust gas recovery control index records, decision expansion is performed according to the multidimensional adsorption condensation recovery control index, namely, a plurality of parameters in the plurality of exhaust gas recovery control index records are randomly combined according to the multidimensional adsorption condensation recovery control index to obtain a plurality of expansion separation recovery decision records, the plurality of expansion separation recovery decision records are added to an expansion separation recovery decision record library, and an adsorption condensation recovery control space is generated by combining the VOCs separation recovery decision record library. The adsorption, condensation and recovery control space comprises a VOCs separation and recovery decision record library and an expansion separation and recovery decision record library. The expanded separation recovery decision record library comprises a plurality of expanded separation recovery decision records. Each expanded split recovery decision record includes a random one of the historical sorbent type parameters, a random one of the historical sorbent dosage parameters, a random one of the historical condensing temperature parameters, and a random one of the historical condensing time parameters within the plurality of flue gas recovery control index records.
Based on the adsorption condensation recovery control space, a first adsorption condensation recovery control decision is obtained;
performing VOCs separation recovery quality prediction on the first adsorption condensation recovery control decision based on a VOCs separation recovery prediction function to obtain a first VOCs separation recovery quality measure;
connecting a simulation separation recovery end, and performing simulation VOCs separation recovery on the target VOCs mixed waste gas according to the first adsorption condensation recovery control decision to obtain the concentration of VOCs in the waste gas after the first simulation;
performing VOCs separation recovery cost prediction on the first adsorption condensation recovery control decision to obtain a first decision prediction cost;
based on the first post-simulation exhaust gas VOCs concentration and the first decision prediction cost, generating the first VOCs separation recovery quality measure according to the VOCs separation recovery prediction function, wherein the VOCs separation recovery prediction function is:
；
wherein QSY VOCs Characterization of the measurement of the quality of recovery of VOCs separation, X VOCs Characterization of VOCs concentration in exhaust gas composition data, Y VOCs Characterizing the concentration of VOCs in the exhaust gas after simulation, and characterizing the decision-making and predicting cost by CSY (customer service gateway), wherein CSY is a model of the exhaust gas 0 And (3) representing a target VOCs separation and recovery cost threshold, wherein alpha is a first weight, beta is a second weight, and the sum of alpha and beta is 1.
The adsorption condensation recovery algorithm further comprises: and randomly selecting the adsorption condensation recovery control space to obtain a first adsorption condensation recovery control decision. The first adsorption condensation recovery control decision is a random VOCs separation recovery decision record/a random expansion separation recovery decision record in the adsorption condensation recovery control space. Further, uploading the first adsorption condensation recovery control decision and the target waste gas detection data to a simulation separation recovery end, and performing simulation VOCs separation recovery on the target VOCs mixed waste gas by the simulation separation recovery end according to the first adsorption condensation recovery control decision to obtain the concentration of the waste gas VOCs after the first simulation. Wherein, a VOCs mixes waste gas separation recovery unit in this application still includes emulation separation recovery end. The simulated separation recovery end comprises an exhaust gas simulated treatment device in the prior art. The waste gas simulation treatment device adopts a virtual reality technology, and carries out the separation and recovery of the simulation VOCs under the control decision of first adsorption, condensation and recovery of the target VOCs mixed waste gas through a computer. After the first simulation, the concentration of the VOCs in the waste gas is simulated, separated and recovered by the simulated separation recovery end according to a first adsorption, condensation and recovery control decision, the VOCs in the target VOCs mixed waste gas is separated and recovered, and the VOCs concentration parameter in the target VOCs mixed waste gas is simulated.
Further, the VOCs separation recovery cost prediction is performed on the first adsorption condensation recovery control decision to obtain a first decision prediction cost. Illustratively, when the VOCs separation recovery cost prediction is performed on the first adsorption condensation recovery control decision, a historical data query is performed according to the first adsorption condensation recovery control decision to obtain a plurality of separation recovery cost records. Each separation recovery cost record comprises a historical adsorption condensation recovery control decision and a historical control decision cost corresponding to the historical adsorption condensation recovery control decision. And then, continuously self-training and learning a plurality of separation recovery cost records to a convergence state according to the BP neural network, so as to obtain the control decision cost prediction network. Inputting the first adsorption condensation recovery control decision into a control decision cost prediction network, and predicting the VOCs separation recovery cost of the first adsorption condensation recovery control decision by the control decision cost prediction network to obtain a first decision prediction cost. The BP neural network is a multi-layer feedforward neural network trained according to an error back propagation algorithm. The control decision cost prediction network comprises an input layer, an implicit layer and an output layer.
And then, inputting the concentration of the VOCs in the first simulated exhaust gas and the first decision prediction cost into a VOCs separation recovery prediction function to obtain a first VOCs separation recovery quality measure. Wherein, VOCs separates recovery prediction function is:
；
wherein QSY VOCs Separating the recovered quality measure for the output VOCs; x is X VOCs Characterizing the concentration of VOCs in the exhaust gas composition data; y is Y VOCs The concentration of VOCs in the waste gas after simulation; CSY is decision prediction cost; CSY 0 The target VOCs separation and recovery cost threshold is a preset and determined maximum value of the VOCs separation and recovery cost of the target VOCs mixed waste gas; alpha is a first weight, beta is a second weight, the sum of alpha and beta is 1, the first weight and the second weight are preset and determined by the VOCs mixed waste gas separating and recycling device, and preferably, the first weight is 0.7, and the second weight is 0.3.
Judging whether the first VOCs separation recovery quality measure meets a preset separation recovery quality constraint;
and if the separation and recovery quality degree of the first VOCs meets the preset separation and recovery quality constraint, generating the target separation and recovery decision according to the first adsorption condensation recovery control decision.
Transmitting the target separation and recovery decision to the waste gas separation and recovery control end, and carrying out VOCs separation and recovery on the target VOCs mixed waste gas according to the target separation and recovery decision.
The adsorption condensation recovery algorithm further comprises: and judging whether the first VOCs separation recovery quality measure meets the preset separation recovery quality constraint. The preset separation and recovery quality constraint comprises a VOCs separation and recovery quality range preset and determined by the VOCs mixed waste gas separation and recovery device. And outputting the first adsorption condensation recovery control decision as a target separation recovery decision if the first VOCs separation recovery quality measure meets the preset separation recovery quality constraint. Then, the target separation recovery decision is transmitted to the waste gas separation recovery control end, and the waste gas separation recovery control end carries out VOCs separation recovery on the target VOCs mixed waste gas according to the target separation recovery decision, so that the VOCs separation recovery effect of the VOCs mixed waste gas is improved. The waste gas separation and recovery control end has the function of performing VOCs separation and recovery control on target VOCs mixed waste gas.
Wherein, judge whether first VOCs separation recovery quality measure satisfies the separation recovery quality constraint of predetermineeing, still include:
if the first VOCs separation recovery quality measure does not meet the preset separation recovery quality constraint, a second adsorption condensation recovery control decision is obtained based on the adsorption condensation recovery control space;
performing VOCs separation recovery quality prediction on the second adsorption condensation recovery control decision based on the VOCs separation recovery prediction function to obtain a second VOCs separation recovery quality measure;
judging whether the second VOCs separation recovery quality measure meets the preset separation recovery quality constraint;
if the separation and recovery quality of the second VOCs meets the preset separation and recovery quality constraint, generating the target separation and recovery decision according to the second adsorption condensation recovery control decision;
and if the second VOCs separation recovery quality measure does not meet the preset separation recovery quality constraint, performing iterative optimization based on the adsorption condensation recovery control space until the target separation recovery decision is generated.
The adsorption condensation recovery algorithm further comprises: and when judging whether the first VOCs separation recovery quality measure meets the preset separation recovery quality constraint, if the first VOCs separation recovery quality measure does not meet the preset separation recovery quality constraint, randomly selecting the adsorption condensation recovery control space again to obtain a second adsorption condensation recovery control decision, and predicting the VOCs separation recovery quality of the second adsorption condensation recovery control decision through the VOCs separation recovery prediction function to obtain a second VOCs separation recovery quality measure. The second adsorption condensation recovery control decision is a random VOCs separation recovery decision record/a random expansion separation recovery decision record in the adsorption condensation recovery control space. The second VOCs separation recovery quality measure is obtained in the same manner as the first VOCs separation recovery quality measure, and is not described in detail herein.
Further, it is determined whether the second VOCs separation recovery quality measure meets a preset separation recovery quality constraint. And outputting the second adsorption condensation recovery control decision as a target separation recovery decision if the second VOCs separation recovery quality measure meets the preset separation recovery quality constraint. And if the second VOCs separation recovery quality measure does not meet the preset separation recovery quality constraint, continuing to iteratively optimizing the adsorption condensation recovery control space until a target separation recovery decision is generated. And the separation and recovery decision of the target VOCs mixed waste gas is carried out through the adsorption condensation recovery algorithm, so that the accuracy and reliability of VOCs separation and recovery of the VOCs mixed waste gas are improved.
Wherein, judge whether target waste gas VOCs ratio is greater than the VOCs ratio of predetermineeing, still include:
if the target exhaust gas VOCs ratio is smaller than/equal to the preset VOCs ratio, generating a VOCs biological treatment instruction;
activating a VOCs biological treatment channel based on the VOCs biological treatment instruction;
inputting the target waste gas detection data into the VOCs biological treatment channel to obtain a VOCs biological treatment decision;
transmitting the VOCs biological treatment decision to the waste gas separation and recovery control end, and carrying out VOCs separation and recovery on the target VOCs mixed waste gas according to the VOCs biological treatment decision.
And generating a VOCs biological treatment instruction if the target exhaust VOCs ratio is less than/equal to the preset VOCs ratio when judging whether the target exhaust VOCs ratio is greater than the preset VOCs ratio. The VOCs biological treatment instruction is instruction information for representing that the VOCs ratio of the target waste gas is smaller than/equal to the preset VOCs ratio, the concentration of VOCs in the target VOCs mixed waste gas is lower, and the VOCs separation and recovery of the target VOCs mixed waste gas are required by adopting a biological treatment method. The biological treatment method is to degrade VOCs in the target VOCs mixed waste gas into harmless substances through a biological film. The biological treatment method is suitable for separating and recovering the VOCs in the VOCs mixed waste gas with relatively low concentration of the VOCs.
Further, the VOCs biological treatment channel is activated according to the VOCs biological treatment instruction. And inputting target waste gas detection data into the VOCs biological treatment channel to obtain a VOCs biological treatment decision. Then, the decision of the biological treatment of the VOCs is transmitted to the waste gas separation and recovery control end, and the waste gas separation and recovery control end carries out VOCs separation and recovery on the target mixed waste gas of the VOCs according to the decision of the biological treatment of the VOCs, so that the VOCs separation and recovery effect of the mixed waste gas of the VOCs is improved. The VOCs biological treatment decision includes biofilm component composition data corresponding to the target exhaust gas detection data.
Illustratively, when constructing the VOCs biological treatment channel, a history data query is performed according to the target exhaust gas detection data to obtain a plurality of VOCs biological treatment records. Each VOCs biological treatment record comprises historical waste gas detection data information and historical biological film component composition data corresponding to the historical waste gas detection data information. And then, performing cross supervision training on the plurality of VOCs biological treatment records according to the BP neural network to obtain a VOCs biological treatment channel. The VOCs biological treatment channel comprises an input layer, an implicit layer and an output layer. The VOCs biological treatment channel has the function of matching the biological film component composition data of the input target waste gas detection data.
In summary, the separation and recovery method for VOCs mixed waste gas provided by the application has the following technical effects:
1. detecting target VOCs mixed waste gas through a waste gas detection end to obtain target waste gas detection data; calculating the target exhaust gas VOCs ratio according to the VOCs ratio analysis formula and the exhaust gas component data in the target exhaust gas detection data; judging whether the VOCs ratio of the target waste gas is larger than a preset VOCs ratio; if the VOCs ratio of the target waste gas is larger than the preset VOCs ratio, generating an adsorption condensation recovery instruction; activating an adsorption condensation recovery algorithm, and carrying out separation recovery decision on target VOCs mixed waste gas by combining target waste gas detection data to obtain a target separation recovery decision; transmitting the target separation and recovery decision to the waste gas separation and recovery control end, and carrying out VOCs separation and recovery on the target VOCs mixed waste gas according to the target separation and recovery decision. The VOCs separation and recovery accuracy of the VOCs mixed waste gas is improved, and the VOCs separation and recovery quality of the VOCs mixed waste gas is improved.
2. And the separation and recovery decision of the target VOCs mixed waste gas is carried out through the adsorption condensation recovery algorithm, so that the accuracy and reliability of VOCs separation and recovery of the VOCs mixed waste gas are improved.
Example two
Based on the same inventive concept as the method for separating and recovering the VOCs mixed exhaust gas in the foregoing embodiment, the present invention further provides a device for separating and recovering the VOCs mixed exhaust gas, where the device includes an exhaust gas detection end and an exhaust gas separation and recovery control end, referring to fig. 2, and the device further includes:
the waste gas detection module is used for detecting target VOCs mixed waste gas according to the waste gas detection end to obtain target waste gas detection data, wherein the target waste gas detection data comprise waste gas component data and waste gas pH value data;
the ratio calculation module is used for constructing a VOCs ratio analysis formula and calculating a target exhaust gas VOCs ratio according to the VOCs ratio analysis formula and the exhaust gas composition data;
a ratio judgment module for judging whether the target exhaust gas VOCs ratio is greater than a preset VOCs ratio;
the adsorption condensation recovery instruction generation module is used for generating an adsorption condensation recovery instruction if the target exhaust gas VOCs ratio is greater than the preset VOCs ratio;
the adsorption condensation recovery decision module is used for activating an adsorption condensation recovery algorithm based on the adsorption condensation recovery instruction, and combining the target waste gas detection data to carry out separation recovery decision on the target VOCs mixed waste gas so as to obtain a target separation recovery decision;
and the separation and recovery module is used for transmitting the target separation and recovery decision to the waste gas separation and recovery control end, and carrying out VOCs separation and recovery on the target VOCs mixed waste gas according to the target separation and recovery decision.
Wherein, the VOCs ratio analysis formula is:
wherein R is VOCs Characterization of target exhaust VOCs ratio, X VOCs Characterizing exhaust gas composition dataVOCs concentration, X j And representing the concentration corresponding to the J-th exhaust gas component index in the exhaust gas component data, wherein J is a positive integer, J belongs to J, and J is the total number of the exhaust gas component indexes corresponding to the exhaust gas component data.
Further, the device also comprises a target separation recovery decision acquisition module for executing the following operation steps:
constructing an adsorption condensation recovery control space based on the target waste gas detection data;
based on the adsorption condensation recovery control space, a first adsorption condensation recovery control decision is obtained;
performing VOCs separation recovery quality prediction on the first adsorption condensation recovery control decision based on a VOCs separation recovery prediction function to obtain a first VOCs separation recovery quality measure;
judging whether the first VOCs separation recovery quality measure meets a preset separation recovery quality constraint;
and if the separation and recovery quality degree of the first VOCs meets the preset separation and recovery quality constraint, generating the target separation and recovery decision according to the first adsorption condensation recovery control decision.
Further, the device also comprises a space building module for executing the following operation steps:
obtaining a multidimensional adsorption condensation recovery control index, wherein the multidimensional adsorption condensation recovery control index comprises an adsorbent type, an adsorbent dosage, a condensation temperature and a condensation time;
performing decision record backtracking on VOCs separation and recovery based on the target waste gas detection data and the multidimensional adsorption condensation recovery control index to obtain a decision record library of VOCs separation and recovery;
clustering the VOCs separation recovery decision record library according to the multidimensional adsorption condensation recovery control index to obtain a plurality of waste gas recovery control index records;
based on the plurality of waste gas recovery control index records, carrying out decision expansion according to the multidimensional adsorption condensation recovery control index to obtain an expansion separation recovery decision record library;
and generating the adsorption condensation recovery control space based on the VOCs separation recovery decision record library and the expansion separation recovery decision record library.
Further, the apparatus also includes a separation recovery quality prediction module to perform the following operational steps:
connecting a simulation separation recovery end, and performing simulation VOCs separation recovery on the target VOCs mixed waste gas according to the first adsorption condensation recovery control decision to obtain the concentration of VOCs in the waste gas after the first simulation;
performing VOCs separation recovery cost prediction on the first adsorption condensation recovery control decision to obtain a first decision prediction cost;
based on the first post-simulation exhaust gas VOCs concentration and the first decision prediction cost, generating the first VOCs separation recovery quality measure according to the VOCs separation recovery prediction function, wherein the VOCs separation recovery prediction function is:
；
wherein QSY VOCs Characterization of the measurement of the quality of recovery of VOCs separation, X VOCs Characterization of VOCs concentration in exhaust gas composition data, Y VOCs Characterizing the concentration of VOCs in the exhaust gas after simulation, and characterizing the decision-making and predicting cost by CSY (customer service gateway), wherein CSY is a model of the exhaust gas 0 And (3) representing a target VOCs separation and recovery cost threshold, wherein alpha is a first weight, beta is a second weight, and the sum of alpha and beta is 1.
Further, the device also comprises a decision optimizing module for executing the following operation steps:
if the first VOCs separation recovery quality measure does not meet the preset separation recovery quality constraint, a second adsorption condensation recovery control decision is obtained based on the adsorption condensation recovery control space;
performing VOCs separation recovery quality prediction on the second adsorption condensation recovery control decision based on the VOCs separation recovery prediction function to obtain a second VOCs separation recovery quality measure;
judging whether the second VOCs separation recovery quality measure meets the preset separation recovery quality constraint;
if the separation and recovery quality of the second VOCs meets the preset separation and recovery quality constraint, generating the target separation and recovery decision according to the second adsorption condensation recovery control decision;
and if the second VOCs separation recovery quality measure does not meet the preset separation recovery quality constraint, performing iterative optimization based on the adsorption condensation recovery control space until the target separation recovery decision is generated.
Further, the apparatus also includes a biological treatment decision module to perform the following operational steps:
if the target exhaust gas VOCs ratio is smaller than/equal to the preset VOCs ratio, generating a VOCs biological treatment instruction;
activating a VOCs biological treatment channel based on the VOCs biological treatment instruction;
inputting the target waste gas detection data into the VOCs biological treatment channel to obtain a VOCs biological treatment decision;
transmitting the VOCs biological treatment decision to the waste gas separation and recovery control end, and carrying out VOCs separation and recovery on the target VOCs mixed waste gas according to the VOCs biological treatment decision.
The VOCs mixed waste gas separation and recovery device provided by the embodiment of the invention can execute the VOCs mixed waste gas separation and recovery method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.
All the included modules are only divided according to the functional logic, but are not limited to the above-mentioned division, so long as the corresponding functions can be realized; in addition, the specific names of the functional modules are only for distinguishing from each other, and are not used for limiting the protection scope of the present invention.
The application provides a VOCs mixed waste gas separation and recovery method, wherein the method is applied to a VOCs mixed waste gas separation and recovery device, and the method comprises the following steps: detecting target VOCs mixed waste gas through a waste gas detection end to obtain target waste gas detection data; calculating the target exhaust gas VOCs ratio according to the VOCs ratio analysis formula and the exhaust gas component data in the target exhaust gas detection data; judging whether the VOCs ratio of the target waste gas is larger than a preset VOCs ratio; if the VOCs ratio of the target waste gas is larger than the preset VOCs ratio, generating an adsorption condensation recovery instruction; activating an adsorption condensation recovery algorithm, and carrying out separation recovery decision on target VOCs mixed waste gas by combining target waste gas detection data to obtain a target separation recovery decision; transmitting the target separation and recovery decision to the waste gas separation and recovery control end, and carrying out VOCs separation and recovery on the target VOCs mixed waste gas according to the target separation and recovery decision. The technical problem of VOCs separation recovery accuracy of VOCs mixed waste gas is low among the prior art, and the VOCs separation recovery effect that leads to VOCs mixed waste gas is poor is solved. The VOCs separation and recovery accuracy of the VOCs mixed waste gas is improved, and the VOCs separation and recovery quality of the VOCs mixed waste gas is improved.
Although the invention has been described in more detail by means of the above embodiments, the invention is not limited to the above embodiments, but may comprise many other equivalent embodiments without departing from the inventive concept, the scope of which is determined by the scope of the appended claims.
Claims (4)
1. A method for separating and recovering mixed exhaust gas of VOCs, the method being applied to a device for separating and recovering mixed exhaust gas of VOCs, the device comprising an exhaust gas detection end and an exhaust gas separation and recovery control end, the method comprising:
detecting target VOCs mixed waste gas according to the waste gas detection end to obtain target waste gas detection data, wherein the target waste gas detection data comprise waste gas component data and waste gas PH value data;
constructing a VOCs ratio analysis formula, and calculating a target exhaust gas VOCs ratio according to the VOCs ratio analysis formula and the exhaust gas composition data;
judging whether the target exhaust gas VOCs ratio is larger than a preset VOCs ratio;
if the target exhaust gas VOCs ratio is greater than the preset VOCs ratio, generating an adsorption condensation recovery instruction;
activating an adsorption condensation recovery algorithm based on the adsorption condensation recovery instruction, and carrying out separation recovery decision on the target VOCs mixed waste gas by combining the target waste gas detection data to obtain a target separation recovery decision;
transmitting the target separation and recovery decision to the waste gas separation and recovery control end, and carrying out VOCs separation and recovery on the target VOCs mixed waste gas according to the target separation and recovery decision;
based on the adsorption condensation recovery instruction, activating an adsorption condensation recovery algorithm, and combining the target waste gas detection data to perform separation recovery decision on the target VOCs mixed waste gas to obtain a target separation recovery decision, including:
constructing an adsorption condensation recovery control space based on the target waste gas detection data;
based on the adsorption condensation recovery control space, a first adsorption condensation recovery control decision is obtained;
performing VOCs separation recovery quality prediction on the first adsorption condensation recovery control decision based on a VOCs separation recovery prediction function to obtain a first VOCs separation recovery quality measure;
judging whether the first VOCs separation recovery quality measure meets a preset separation recovery quality constraint;
if the separation and recovery quality degree of the first VOCs meets the preset separation and recovery quality constraint, generating the target separation and recovery decision according to the first adsorption condensation recovery control decision;
based on target exhaust gas detection data, build and adsorb condensation recovery control space, include:
obtaining a multidimensional adsorption condensation recovery control index, wherein the multidimensional adsorption condensation recovery control index comprises an adsorbent type, an adsorbent dosage, a condensation temperature and a condensation time;
performing decision record backtracking on VOCs separation and recovery based on the target waste gas detection data and the multidimensional adsorption condensation recovery control index to obtain a decision record library of VOCs separation and recovery;
clustering the VOCs separation recovery decision record library according to the multidimensional adsorption condensation recovery control index to obtain a plurality of waste gas recovery control index records;
based on the plurality of waste gas recovery control index records, carrying out decision expansion according to the multidimensional adsorption condensation recovery control index to obtain an expansion separation recovery decision record library;
generating the adsorption condensation recovery control space based on the VOCs separation recovery decision record library and the expansion separation recovery decision record library;
performing VOCs separation recovery quality prediction on the first adsorption condensate recovery control decision based on a VOCs separation recovery prediction function to obtain a first VOCs separation recovery quality measure, comprising:
connecting a simulation separation recovery end, and performing simulation VOCs separation recovery on the target VOCs mixed waste gas according to the first adsorption condensation recovery control decision to obtain the concentration of VOCs in the waste gas after the first simulation;
performing VOCs separation recovery cost prediction on the first adsorption condensation recovery control decision to obtain a first decision prediction cost;
based on the first post-simulation exhaust gas VOCs concentration and the first decision prediction cost, generating the first VOCs separation recovery quality measure according to the VOCs separation recovery prediction function, wherein the VOCs separation recovery prediction function is:
；
wherein QSY VOCs Characterization of the measurement of the quality of recovery of VOCs separation, X VOCs Characterization of VOCs concentration in exhaust gas composition data, Y VOCs Characterizing the concentration of VOCs in the exhaust gas after simulation, and characterizing the decision-making and predicting cost by CSY (customer service gateway), wherein CSY is a model of the exhaust gas 0 Representing a target VOCs separation and recovery cost threshold, wherein alpha is a first weight, beta is a second weight, and the sum of alpha and beta is 1;
judging whether the first VOCs separation recovery quality measure meets a preset separation recovery quality constraint or not, and further comprising:
if the first VOCs separation recovery quality measure does not meet the preset separation recovery quality constraint, a second adsorption condensation recovery control decision is obtained based on the adsorption condensation recovery control space;
performing VOCs separation recovery quality prediction on the second adsorption condensation recovery control decision based on the VOCs separation recovery prediction function to obtain a second VOCs separation recovery quality measure;
judging whether the second VOCs separation recovery quality measure meets the preset separation recovery quality constraint;
if the separation and recovery quality of the second VOCs meets the preset separation and recovery quality constraint, generating the target separation and recovery decision according to the second adsorption condensation recovery control decision;
and if the second VOCs separation recovery quality measure does not meet the preset separation recovery quality constraint, performing iterative optimization based on the adsorption condensation recovery control space until the target separation recovery decision is generated.
2. The method of claim 1, wherein the VOCs ratio resolution formula is:
wherein R is VOCs Characterization of target exhaust VOCs ratio, X VOCs Characterization of VOCs concentration, X in exhaust gas composition data j And representing the concentration corresponding to the J-th exhaust gas component index in the exhaust gas component data, wherein J is a positive integer, J belongs to J, and J is the total number of the exhaust gas component indexes corresponding to the exhaust gas component data.
3. The method of claim 1, wherein determining whether the target exhaust VOCs ratio is greater than a preset VOCs ratio further comprises:
if the target exhaust gas VOCs ratio is smaller than/equal to the preset VOCs ratio, generating a VOCs biological treatment instruction;
activating a VOCs biological treatment channel based on the VOCs biological treatment instruction;
inputting the target waste gas detection data into the VOCs biological treatment channel to obtain a VOCs biological treatment decision;
transmitting the VOCs biological treatment decision to the waste gas separation and recovery control end, and carrying out VOCs separation and recovery on the target VOCs mixed waste gas according to the VOCs biological treatment decision.
4. A VOCs mixed exhaust gas separation and recovery apparatus for performing the method of any one of claims 1 to 3, said apparatus comprising an exhaust gas detection end and an exhaust gas separation and recovery control end, said apparatus further comprising:
the waste gas detection module is used for detecting target VOCs mixed waste gas according to the waste gas detection end to obtain target waste gas detection data, wherein the target waste gas detection data comprise waste gas component data and waste gas pH value data;
the ratio calculation module is used for constructing a VOCs ratio analysis formula and calculating a target exhaust gas VOCs ratio according to the VOCs ratio analysis formula and the exhaust gas composition data;
a ratio judgment module for judging whether the target exhaust gas VOCs ratio is greater than a preset VOCs ratio;
the adsorption condensation recovery instruction generation module is used for generating an adsorption condensation recovery instruction if the target exhaust gas VOCs ratio is greater than the preset VOCs ratio;
the adsorption condensation recovery decision module is used for activating an adsorption condensation recovery algorithm based on the adsorption condensation recovery instruction, and combining the target waste gas detection data to carry out separation recovery decision on the target VOCs mixed waste gas so as to obtain a target separation recovery decision;
and the separation and recovery module is used for transmitting the target separation and recovery decision to the waste gas separation and recovery control end, and carrying out VOCs separation and recovery on the target VOCs mixed waste gas according to the target separation and recovery decision.
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| WO2020102467A1 (en) * | 2018-11-15 | 2020-05-22 | Dürr Systems Ag | Exhaust gas purification system and method and data processing system for monitoring at least one exhaust gas purification system |
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