CN109603494B - Desulfurization device absorption circulation system optimized operation method based on big data and absorption circulation system - Google Patents
Desulfurization device absorption circulation system optimized operation method based on big data and absorption circulation system Download PDFInfo
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 121
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 26
- 230000023556 desulfurization Effects 0.000 title claims abstract description 26
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 107
- 239000003546 flue gas Substances 0.000 claims description 107
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
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- 229910052799 carbon Inorganic materials 0.000 description 1
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Abstract
The invention provides a desulfurization device absorption cycle system optimized operation method based on big data, which comprises the following steps: carrying out operation monitoring and optimized monitoring on the absorption cycle systems of all units in the power plant to acquire operation data of the absorption cycle systems; based on the real-time collected operation data of the absorption cycle system and combined with the historical operation data of the unit, the optimal operation scheme under the current working condition is given or no suggestion is provided through big data analysis and calculation; and providing the optimal operation scheme under the current working condition for a user. The method and the system realize refined operation by optimizing the operation capacity of the slurry circulating pump, and realize energy conservation and consumption reduction of enterprise operation while meeting the national environmental protection requirement. The method and the system realize the deep integration of advanced technologies such as internet, big data, artificial intelligence and the like and the management of the traditional environmental protection equipment, and meet the requirements of national development strategy.
Description
Technical Field
The invention relates to the field of environmental protection of power plants, in particular to a desulphurization device absorption cycle system optimized operation method based on big data and an absorption cycle system.
Background
Nineteen reports provide and promote the deep fusion of the internet, big data, artificial intelligence and entity economy, and new growth points and new kinetic energy are developed in the fields of innovation and leading, green and low carbon, shared economy and the like; the advanced technologies such as the internet, big data, artificial intelligence and the like are deeply integrated with the production, manufacturing, operation and maintenance management of the traditional environment-friendly equipment, and the transformation of a company is promoted; an environment-friendly equipment expert decision system is established, and through artificial intelligence learning of production real-time data and historical data, by means of real-time theoretical calculation and historical optimization, refined operation optimization guidance of equipment is achieved, and environment-friendly optimization and economic maximization are guaranteed.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a desulfurization device absorption cycle system optimized operation method based on big data and an absorption cycle system, thereby overcoming the defects of the prior art.
The invention provides a desulfurization device absorption cycle system optimized operation method based on big data, which comprises the following steps:
carrying out operation monitoring and optimized monitoring on the absorption cycle systems of all units in the power plant to acquire operation data of the absorption cycle systems;
based on the real-time collected operation data of the absorption cycle system and combined with the historical operation data of the unit, the optimal operation scheme under the current working condition is given or no suggestion is provided through big data analysis and calculation;
providing the optimal operation scheme under the current working condition for a user;
the method comprises the following steps of acquiring operation data of an absorption cycle system based on real-time acquisition, combining historical operation data of a unit, analyzing and calculating by a big data means, and giving an optimal operation scheme under the current working condition or not giving suggestions, wherein the method specifically comprises the following steps:
based on parameters configured in the background, analyzing the logic relation among the parameters, and obtaining the highest pH control value of 5 groups and the optimal operation combination mode recommendation tuning scheme of the circulating pump by the operation of an algorithm model, wherein the parameters configured in the background comprise: historical data of boiler load or raw flue gas flow, raw flue gas SO2 concentration, clean flue gas SO2 concentration, absorption tower slurry pH, AFT tower slurry pH, absorption tower circulating pump operation condition and AFT tower operation condition; and
analyzing the most economical operation mode of the power consumption of the desulfurization device and providing a frequency conversion output value and a circulation pump operation combination mode based on the historical data of boiler load or raw flue gas flow, the concentration of raw flue gas SO2, the concentration of clean flue gas SO2, the current of a circulation pump of an absorption tower, the slurry density of the absorption tower, the current of a circulation pump of an AFT tower, the slurry density of the AFT tower, the current of a vacuum pump and the total power consumption of the desulfurization device.
Preferably, in the above technical solution, the following conditions are specifically or not suggested for the optimal operation scheme under the current working condition, which are given by analyzing and calculating by means of big data based on the operation data of the absorption cycle system collected in real time and in combination with the historical operation data of the unit:
if, after the adjustment, the net flue gas SO2 concentration is below emission standards and the net flue gas SO2 concentration differs from the emission standards by less than 2 mg, then no suggestion is made;
if, when no adjustment is made, the net flue gas SO2 concentration is below emission standards and the net flue gas SO2 concentration differs from emission standards by less than 2 mg, no suggestion is made.
Preferably, in the above technical solution, the following conditions are specifically or not suggested for the optimal operation scheme under the current working condition, which are given by analyzing and calculating by means of big data based on the operation data of the absorption cycle system collected in real time and in combination with the historical operation data of the unit:
if the concentration of the clean flue gas SO2 is lower than the target value, the difference between the concentration of the clean flue gas SO2 and the target value is more than 10 mg, and the load is not increased in the next 30 minutes, performing a pump stopping suggestion search, and sending the searched pump stopping suggestion to the user;
wherein the pump stop suggestion search is based on the following criteria:
whether the corrected SO2 emission amount is between a first value and a second value, wherein the first value is equal to the product of the target concentration of the SO2 emission and the flow rate of the SO2, the second value is equal to the product of the current concentration of the SO2 emission after the shift and the flow rate of the SO2, and the current concentration of the SO2 emission after the shift is equal to the current concentration of the SO2 emission plus 1;
whether the number of the circulating pumps in the residual operation after the pump stopping is lower than that of the circulating pumps in the current operation or not;
whether the increase and decrease of the number of the circulating pumps are consistent with the change direction of the SO2 discharge value or not;
whether the circulation pump needing to be operated is not operated within 30 minutes, and whether the circulation pump needing to be operated is a hung circulation pump;
the basic condition is hierarchical, wherein, the basic condition is hierarchical including: base case boiler load and product of flue gas flow and inlet SO2 concentration.
Preferably, in the above technical solution, the following conditions are specifically or not suggested for the optimal operation scheme under the current working condition, which are given by analyzing and calculating by means of big data based on the operation data of the absorption cycle system collected in real time and in combination with the historical operation data of the unit:
if the concentration of the clean flue gas SO2 is higher than the national standard and the difference between the concentration of the clean flue gas SO2 and the national standard is less than 2 mg, or if the concentration of the clean flue gas SO2 is higher than the emission standard and the difference between the concentration of the clean flue gas SO2 and the emission standard is more than 2 mg, and the load is not reduced in the future 30 minutes, giving a pump starting suggestion, wherein the pump starting suggestion comprises: if the circulating pump of the AFT tower is not started, 1 circulating pump of the AFT tower is recommended to be started;
if the AFT tower recycle pump is already on, otherwise another available AFT tower recycle pump is selected.
Preferably, in the above technical solution, the method for optimizing the operation of the absorption cycle system of the desulfurization device based on big data includes the following steps:
if no start-stop suggestion is given for the circulating pump, providing a slurry supply adjustment suggestion, and sending the slurry supply adjustment suggestion to a user;
wherein adjusting the slurry feed recommendation comprises:
when the SO2 emission value is higher than the emission standard, the pulp supply amount is adjusted to be high: when the emission of SO2 is lower than the emission standard and reaches 2 mg, the pulp supply amount is reduced;
when the pH value of the slurry of the absorption tower is higher than 5.3, the pH value of the slurry of the absorption tower is reduced by 0.2;
when an AFT tower circulating pump is in operation, when the pH value of AFT tower slurry is higher than 6.1, the pH value of the AFT tower slurry is reduced by 0.2, and when the pH value of absorption tower slurry is lower than 4.7, the pH value of the absorption tower slurry is increased by 0.2;
when the circulating pump of the AFT tower is in operation, when the pH value of the slurry of the AFT tower is lower than 5.8, the pH value of the slurry of the AFT tower is increased by 0.2;
when the SO2 emission value is higher than the emission standard and the difference between the SO2 emission value and the emission standard is less than 4 mg, the magnitude of the turn-down pulp supply is reduced.
The present invention provides an absorption cycle system, comprising:
the unit is used for carrying out operation monitoring and optimized monitoring on the absorption cycle systems of all the units in the power plant so as to acquire the operation data of the absorption cycle systems;
a unit for analyzing and calculating by means of big data based on the real-time collected operation data of the absorption cycle system and combined with the historical operation data of the unit to give the optimal operation scheme under the current working condition or not to give suggestions;
a unit for providing the optimal operation scheme under the current working condition to a user;
the method comprises the following steps of acquiring operation data of an absorption cycle system based on real-time acquisition, combining historical operation data of a unit, analyzing and calculating by a big data means, and giving an optimal operation scheme under the current working condition or not giving suggestions, wherein the method specifically comprises the following steps:
based on parameters configured in the background, analyzing the logic relation among the parameters, and obtaining the highest pH control value of 5 groups and the optimal operation combination mode recommendation tuning scheme of the circulating pump by the operation of an algorithm model, wherein the parameters configured in the background comprise: historical data of boiler load or raw flue gas flow, raw flue gas SO2 concentration, clean flue gas SO2 concentration, absorption tower slurry pH, AFT tower slurry pH, absorption tower circulating pump operation condition and AFT tower operation condition; and
analyzing the most economical operation mode of the power consumption of the desulfurization device and providing a frequency conversion output value and a circulation pump operation combination mode based on the historical data of boiler load or raw flue gas flow, the concentration of raw flue gas SO2, the concentration of clean flue gas SO2, the current of a circulation pump of an absorption tower, the slurry density of the absorption tower, the current of a circulation pump of an AFT tower, the slurry density of the AFT tower, the current of a vacuum pump and the total power consumption of the desulfurization device.
Preferably, in the above technical solution, the following conditions are specifically or not suggested for the optimal operation scheme under the current working condition, which are given by analyzing and calculating by means of big data based on the operation data of the absorption cycle system collected in real time and in combination with the historical operation data of the unit:
if, after the adjustment, the net flue gas SO2 concentration is below emission standards and the net flue gas SO2 concentration differs from the emission standards by less than 2 mg, then no suggestion is made;
if, when no adjustment is made, the net flue gas SO2 concentration is below emission standards and the net flue gas SO2 concentration differs from emission standards by less than 2 mg, no suggestion is made.
Preferably, in the above technical solution, the following conditions are specifically or not suggested for the optimal operation scheme under the current working condition, which are given by analyzing and calculating by means of big data based on the operation data of the absorption cycle system collected in real time and in combination with the historical operation data of the unit:
if the concentration of the clean flue gas SO2 is lower than the target value, the difference between the concentration of the clean flue gas SO2 and the target value is more than 10 mg, and the load is not increased in the next 30 minutes, performing a pump stopping suggestion search, and sending the searched pump stopping suggestion to the user;
wherein the pump stop suggestion search is based on the following criteria:
whether the corrected SO2 emission amount is between a first value and a second value, wherein the first value is equal to the product of the target concentration of the SO2 emission and the flow rate of the SO2, the second value is equal to the product of the current concentration of the SO2 emission after the shift and the flow rate of the SO2, and the current concentration of the SO2 emission after the shift is equal to the current concentration of the SO2 emission plus 1;
whether the number of the circulating pumps in the residual operation after the pump stopping is lower than that of the circulating pumps in the current operation or not;
whether the increase and decrease of the number of the circulating pumps are consistent with the change direction of the SO2 discharge value or not;
whether the circulation pump needing to be operated is not operated within 30 minutes, and whether the circulation pump needing to be operated is a hung circulation pump;
the basic condition is hierarchical, wherein, the basic condition is hierarchical including: base case boiler load and product of flue gas flow and inlet SO2 concentration.
Preferably, in the above technical solution, the following conditions are specifically or not suggested for the optimal operation scheme under the current working condition, which are given by analyzing and calculating by means of big data based on the operation data of the absorption cycle system collected in real time and in combination with the historical operation data of the unit:
if the concentration of the clean flue gas SO2 is higher than the national standard and the difference between the concentration of the clean flue gas SO2 and the national standard is less than 2 mg, or if the concentration of the clean flue gas SO2 is higher than the emission standard and the difference between the concentration of the clean flue gas SO2 and the emission standard is more than 2 mg, and the load is not reduced in the future 30 minutes, giving a pump starting suggestion, wherein the pump starting suggestion comprises: if the circulating pump of the AFT tower is not started, 1 circulating pump of the AFT tower is recommended to be started;
if the AFT tower recycle pump is already on, otherwise another available AFT tower recycle pump is selected.
Preferably, in the above technical solution, the method for optimizing the operation of the absorption cycle system of the desulfurization device based on big data includes the following steps:
if no start-stop suggestion is given for the circulating pump, providing a slurry supply adjustment suggestion, and sending the slurry supply adjustment suggestion to a user;
wherein adjusting the slurry feed recommendation comprises:
when the SO2 emission value is higher than the emission standard, the pulp supply amount is adjusted to be high: when the emission of SO2 is lower than the emission standard and reaches 2 mg, the pulp supply amount is reduced;
when the pH value of the slurry of the absorption tower is higher than 5.3, the pH value of the slurry of the absorption tower is reduced by 0.2;
when an AFT tower circulating pump is in operation, when the pH value of AFT tower slurry is higher than 6.1, the pH value of the AFT tower slurry is reduced by 0.2, and when the pH value of absorption tower slurry is lower than 4.7, the pH value of the absorption tower slurry is increased by 0.2;
when the circulating pump of the AFT tower is in operation, when the pH value of the slurry of the AFT tower is lower than 5.8, the pH value of the slurry of the AFT tower is increased by 0.2;
when the SO2 emission value is higher than the emission standard and the difference between the SO2 emission value and the emission standard is less than 4 mg, the magnitude of the turn-down pulp supply is reduced.
Compared with the prior art, the invention has the following beneficial effects: based on big data technologies such as machine learning, cluster analysis and trajectory tracking, machine autonomous learning and real-time monitoring are carried out on real-time operation records and equipment running states of a front-line operation engineer on equipment under various working conditions; the normal operation rule of the equipment is summarized, and a guide suggestion for the running optimization of the refined equipment of the environmental protection island equipment is provided for a first-line operation engineer by combining historical optimization and theoretical optimal calculation; and realizing machine learning aid decision. The real-time SO2 emission value, the average value, the target value, the pH value, the raw flue gas concentration, the boiler load and the real-time visualization function of each operating device provide judgment support for operators. The operation conditions of equipment such as an absorption tower circulating pump and the like are monitored on a whole set, and the economic maximization of operation is achieved on the premise of ensuring the environmental protection requirement. Controlling the running state of the circulating pump to enable the average value of SO2 discharge to be close to the target value; adjusting the pH value to enable the average value of SO2 emission to be closer to the target value; the energy-saving effect is achieved. The current circulating pump is basically all non-frequency conversion mode, relatively poor to the adaptability of boiler flue gas load, when flue gas SO2 concentration flue gas flow changes, the circulating slurry pump is often in the state of excessive processing, especially after the country implements ultralow emission standard, in order to guarantee that desulfurization flue gas outlet sulphur discharges and does not exceed standard, the control is all lower, if change the circulating pump into the frequency conversion pump, combine big data neural optimization to guide, realize that full operating mode thick liquid absorbs the matching, realize the line ball operation, finally reach energy-conserving purpose. The method and the system realize refined operation by optimizing the operation capacity of the slurry circulating pump, and realize energy conservation and consumption reduction of enterprise operation while meeting the national environmental protection requirement. The method and the system of the invention support the optimization and upgrade of the traditional industry, accelerate the development of the modern service industry and aim at the improvement level of the international standard. The advanced technologies such as the internet, big data, artificial intelligence and the like are deeply integrated with the traditional environmental protection equipment management, and the national development strategy requirements are met.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a flow chart of a method for optimizing operation of an absorption cycle system of a big data based desulfurization unit according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
FIG. 1 is a flow chart of a method for optimizing operation of an absorption cycle system of a big data based desulfurization unit according to an embodiment of the present invention. As shown, the method of the present invention comprises:
step 101: carrying out operation monitoring and optimized monitoring on the absorption cycle systems of all units in the power plant to acquire operation data of the absorption cycle systems;
step 102: based on the real-time collected operation data of the absorption cycle system and combined with the historical operation data of the unit, the optimal operation scheme under the current working condition is given or no suggestion is provided through big data analysis and calculation;
step 103: providing the optimal operation scheme under the current working condition for a user;
the method comprises the following steps of acquiring operation data of an absorption cycle system based on real-time acquisition, combining historical operation data of a unit, analyzing and calculating by a big data means, and giving an optimal operation scheme under the current working condition or not giving suggestions, wherein the method specifically comprises the following steps:
based on parameters configured in the background, analyzing the logic relation among the parameters, and obtaining the highest pH control value of 5 groups and the optimal operation combination mode recommendation tuning scheme of the circulating pump by the operation of an algorithm model, wherein the parameters configured in the background comprise: historical data of boiler load or raw flue gas flow, raw flue gas SO2 concentration, clean flue gas SO2 concentration, absorption tower slurry pH, AFT tower slurry pH, absorption tower circulating pump operation condition and AFT tower operation condition; and
analyzing the most economical operation mode of the power consumption of the desulfurization device and providing a frequency conversion output value and a circulation pump operation combination mode based on the historical data of boiler load or raw flue gas flow, the concentration of raw flue gas SO2, the concentration of clean flue gas SO2, the current of a circulation pump of an absorption tower, the slurry density of the absorption tower, the current of a circulation pump of an AFT tower, the slurry density of the AFT tower, the current of a vacuum pump and the total power consumption of the desulfurization device.
Preferably, in the above technical solution, the following conditions are specifically or not suggested for the optimal operation scheme under the current working condition, which are given by analyzing and calculating by means of big data based on the operation data of the absorption cycle system collected in real time and in combination with the historical operation data of the unit:
if, after the adjustment, the net flue gas SO2 concentration is below emission standards and the net flue gas SO2 concentration differs from the emission standards by less than 2 mg, then no suggestion is made;
if, when no adjustment is made, the net flue gas SO2 concentration is below emission standards and the net flue gas SO2 concentration differs from emission standards by less than 2 mg, no suggestion is made.
Preferably, in the above technical solution, the following conditions are specifically or not suggested for the optimal operation scheme under the current working condition, which are given by analyzing and calculating by means of big data based on the operation data of the absorption cycle system collected in real time and in combination with the historical operation data of the unit:
if the concentration of the clean flue gas SO2 is lower than the target value, the difference between the concentration of the clean flue gas SO2 and the target value is more than 10 mg, and the load is not increased in the next 30 minutes, performing a pump stopping suggestion search, and sending the searched pump stopping suggestion to the user;
wherein the pump stop suggestion search is based on the following criteria:
whether the corrected SO2 emission amount is between a first value and a second value, wherein the first value is equal to the product of the target concentration of the SO2 emission and the flow rate of the SO2, the second value is equal to the product of the current concentration of the SO2 emission after the shift and the flow rate of the SO2, and the current concentration of the SO2 emission after the shift is equal to the current concentration of the SO2 emission plus 1;
whether the number of the circulating pumps in the residual operation after the pump stopping is lower than that of the circulating pumps in the current operation or not;
whether the increase and decrease of the number of the circulating pumps are consistent with the change direction of the SO2 discharge value or not;
whether the circulation pump needing to be operated is not operated within 30 minutes, and whether the circulation pump needing to be operated is a hung circulation pump;
the basic condition is hierarchical, wherein, the basic condition is hierarchical including: base case boiler load and product of flue gas flow and inlet SO2 concentration.
Preferably, in the above technical solution, the following conditions are specifically or not suggested for the optimal operation scheme under the current working condition, which are given by analyzing and calculating by means of big data based on the operation data of the absorption cycle system collected in real time and in combination with the historical operation data of the unit:
if the concentration of the clean flue gas SO2 is higher than the national standard and the difference between the concentration of the clean flue gas SO2 and the national standard is less than 2 mg, or if the concentration of the clean flue gas SO2 is higher than the emission standard and the difference between the concentration of the clean flue gas SO2 and the emission standard is more than 2 mg, and the load is not reduced in the future 30 minutes, giving a pump starting suggestion, wherein the pump starting suggestion comprises: if the circulating pump of the AFT tower is not started, 1 circulating pump of the AFT tower is recommended to be started;
if the AFT tower recycle pump is already on, otherwise another available AFT tower recycle pump is selected.
Preferably, in the above technical solution, the method for optimizing the operation of the absorption cycle system of the desulfurization device based on big data includes the following steps:
if no start-stop suggestion is given for the circulating pump, providing a slurry supply adjustment suggestion, and sending the slurry supply adjustment suggestion to a user;
wherein adjusting the slurry feed recommendation comprises:
when the SO2 emission value is higher than the emission standard, the pulp supply amount is adjusted to be high: when the emission of SO2 is lower than the emission standard and reaches 2 mg, the pulp supply amount is reduced;
when the pH value of the slurry of the absorption tower is higher than 5.3, the pH value of the slurry of the absorption tower is reduced by 0.2;
when an AFT tower circulating pump is in operation, when the pH value of AFT tower slurry is higher than 6.1, the pH value of the AFT tower slurry is reduced by 0.2, and when the pH value of absorption tower slurry is lower than 4.7, the pH value of the absorption tower slurry is increased by 0.2;
when the circulating pump of the AFT tower is in operation, when the pH value of the slurry of the AFT tower is lower than 5.8, the pH value of the slurry of the AFT tower is increased by 0.2;
when the SO2 emission value is higher than the emission standard and the difference between the SO2 emission value and the emission standard is less than 4 mg, the magnitude of the turn-down pulp supply is reduced.
The present invention provides an absorption cycle system, comprising:
the unit is used for carrying out operation monitoring and optimized monitoring on the absorption cycle systems of all the units in the power plant so as to acquire the operation data of the absorption cycle systems;
a unit for analyzing and calculating by means of big data based on the real-time collected operation data of the absorption cycle system and combined with the historical operation data of the unit to give the optimal operation scheme under the current working condition or not to give suggestions;
a unit for providing the optimal operation scheme under the current working condition to a user;
the method comprises the following steps of acquiring operation data of an absorption cycle system based on real-time acquisition, combining historical operation data of a unit, analyzing and calculating by a big data means, and giving an optimal operation scheme under the current working condition or not giving suggestions, wherein the method specifically comprises the following steps:
based on parameters configured in the background, analyzing the logic relation among the parameters, and obtaining the highest pH control value of 5 groups and the optimal operation combination mode recommendation tuning scheme of the circulating pump by the operation of an algorithm model, wherein the parameters configured in the background comprise: historical data of boiler load or raw flue gas flow, raw flue gas SO2 concentration, clean flue gas SO2 concentration, absorption tower slurry pH, AFT tower slurry pH, absorption tower circulating pump operation condition and AFT tower operation condition; and
analyzing the most economical operation mode of the power consumption of the desulfurization device and providing a frequency conversion output value and a circulation pump operation combination mode based on the historical data of boiler load or raw flue gas flow, the concentration of raw flue gas SO2, the concentration of clean flue gas SO2, the current of a circulation pump of an absorption tower, the slurry density of the absorption tower, the current of a circulation pump of an AFT tower, the slurry density of the AFT tower, the current of a vacuum pump and the total power consumption of the desulfurization device.
And the absorption circulating system displays the real-time running condition of the unit, the starting conditions of various pump starting devices, various real-time parameters and a suggested tuning scheme according to the unit latitude. The curves show the fluctuation of the key measuring points or data in the past 2 hours and predict the fluctuation of part of the data in the future 1 hour.
Preferably, in the above technical solution, the following conditions are specifically or not suggested for the optimal operation scheme under the current working condition, which are given by analyzing and calculating by means of big data based on the operation data of the absorption cycle system collected in real time and in combination with the historical operation data of the unit:
if, after the adjustment, the net flue gas SO2 concentration is below emission standards and the net flue gas SO2 concentration differs from the emission standards by less than 2 mg, then no suggestion is made;
if, when no adjustment is made, the net flue gas SO2 concentration is below emission standards and the net flue gas SO2 concentration differs from emission standards by less than 2 mg, no suggestion is made.
Preferably, in the above technical solution, the following conditions are specifically or not suggested for the optimal operation scheme under the current working condition, which are given by analyzing and calculating by means of big data based on the operation data of the absorption cycle system collected in real time and in combination with the historical operation data of the unit:
if the concentration of the clean flue gas SO2 is lower than the target value, the difference between the concentration of the clean flue gas SO2 and the target value is more than 10 mg, and the load is not increased in the next 30 minutes, performing a pump stopping suggestion search, and sending the searched pump stopping suggestion to the user;
wherein the pump stop suggestion search is based on the following criteria:
whether the corrected SO2 emission amount is between a first value and a second value, wherein the first value is equal to the product of the target concentration of the SO2 emission and the flow rate of the SO2, the second value is equal to the product of the current concentration of the SO2 emission after the shift and the flow rate of the SO2, and the current concentration of the SO2 emission after the shift is equal to the current concentration of the SO2 emission plus 1;
whether the number of the circulating pumps in the residual operation after the pump stopping is lower than that of the circulating pumps in the current operation or not;
whether the increase and decrease of the number of the circulating pumps are consistent with the change direction of the SO2 discharge value or not;
whether the circulation pump needing to be operated is not operated within 30 minutes, and whether the circulation pump needing to be operated is a hung circulation pump;
the basic condition is hierarchical, wherein, the basic condition is hierarchical including: base case boiler load and product of flue gas flow and inlet SO2 concentration.
Preferably, in the above technical solution, the following conditions are specifically or not suggested for the optimal operation scheme under the current working condition, which are given by analyzing and calculating by means of big data based on the operation data of the absorption cycle system collected in real time and in combination with the historical operation data of the unit:
if the concentration of the clean flue gas SO2 is higher than the national standard and the difference between the concentration of the clean flue gas SO2 and the national standard is less than 2 mg, or if the concentration of the clean flue gas SO2 is higher than the emission standard and the difference between the concentration of the clean flue gas SO2 and the emission standard is more than 2 mg, and the load is not reduced in the future 30 minutes, giving a pump starting suggestion, wherein the pump starting suggestion comprises: if the circulating pump of the AFT tower is not started, 1 circulating pump of the AFT tower is recommended to be started;
if the AFT tower recycle pump is already on, otherwise another available AFT tower recycle pump is selected.
Preferably, in the above technical solution, the method for optimizing the operation of the absorption cycle system of the desulfurization device based on big data includes the following steps:
if no start-stop suggestion is given for the circulating pump, providing a slurry supply adjustment suggestion, and sending the slurry supply adjustment suggestion to a user;
wherein adjusting the slurry feed recommendation comprises:
when the SO2 emission value is higher than the emission standard, the pulp supply amount is adjusted to be high: when the emission of SO2 is lower than the emission standard and reaches 2 mg, the pulp supply amount is reduced;
when the pH value of the slurry of the absorption tower is higher than 5.3, the pH value of the slurry of the absorption tower is reduced by 0.2;
when an AFT tower circulating pump is in operation, when the pH value of AFT tower slurry is higher than 6.1, the pH value of the AFT tower slurry is reduced by 0.2, and when the pH value of absorption tower slurry is lower than 4.7, the pH value of the absorption tower slurry is increased by 0.2;
when the circulating pump of the AFT tower is in operation, when the pH value of the slurry of the AFT tower is lower than 5.8, the pH value of the slurry of the AFT tower is increased by 0.2;
when the SO2 emission value is higher than the emission standard and the difference between the SO2 emission value and the emission standard is less than 4 mg, the magnitude of the turn-down pulp supply is reduced.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (4)
1. A desulfurization device absorption cycle system optimization operation method based on big data is characterized in that: the method for optimizing the operation of the absorption cycle system of the desulphurization device based on the big data comprises the following steps:
carrying out operation monitoring and optimized monitoring on the absorption cycle systems of all units in the power plant to acquire operation data of the absorption cycle systems;
based on the real-time collected operation data of the absorption cycle system and combined with the historical operation data of the unit, the optimal operation scheme under the current working condition is given or no suggestion is provided through big data analysis and calculation;
providing the optimal operation scheme under the current working condition for a user;
the method comprises the following steps of acquiring the operation data of the absorption cycle system based on real-time acquisition, combining historical operation data of a unit, analyzing and calculating by a big data means, and giving an optimal operation scheme under the current working condition or not giving suggestions specifically:
based on parameters configured in the background, analyzing the logic relation among the parameters, and obtaining the highest pH control value of 5 groups and the optimal operation combination mode recommendation tuning scheme of the circulating pump by the operation of an algorithm model, wherein the parameters configured in the background comprise: historical data of boiler load or raw flue gas flow, raw flue gas SO2 concentration, clean flue gas SO2 concentration, absorption tower slurry pH, AFT tower slurry pH, absorption tower circulating pump operation condition and AFT tower operation condition; and
analyzing the most economical operation mode of the power consumption of the desulfurization device and giving a frequency conversion output value and a circulation pump operation combination mode based on the historical data of boiler load or raw flue gas flow, the concentration of raw flue gas SO2, the concentration of clean flue gas SO2, the current of a circulation pump of an absorption tower, the slurry density of the absorption tower, the current of a circulation pump of an AFT tower, the slurry density of the AFT tower, the current of a vacuum pump and the total power consumption of the desulfurization device;
the operation data of the absorption cycle system based on real-time acquisition and combined with the historical operation data of the unit are analyzed and calculated by a big data means, and the concrete or non-suggested optimal operation scheme under the current working condition comprises the following conditions:
if, after adjustment, the net flue gas SO2 concentration is below emission standards and the net flue gas SO2 concentration differs from the emission standards by less than 2 milligrams, then no suggestion is made;
if, when not adjusted, the net flue gas SO2 concentration is below emission standards and the net flue gas SO2 concentration differs from the emission standards by less than 2 milligrams, then no suggestion is made;
the operation data of the absorption cycle system based on real-time acquisition and combined with the historical operation data of the unit are analyzed and calculated by a big data means, and the concrete or non-suggested optimal operation scheme under the current working condition comprises the following conditions:
if the concentration of the clean flue gas SO2 is lower than a target value, the difference between the concentration of the clean flue gas SO2 and the target value is more than 10 mg, and the load does not increase in the next 30 minutes, performing a pump stopping suggestion search, and sending the searched pump stopping suggestion to a user;
wherein the pump stop suggestion search is based on the following criteria:
whether the corrected SO2 emission amount is between a first value equal to the product of the SO2 emission target concentration and the SO2 flow rate and a second value equal to the product of the shifted SO2 emission current concentration and the SO2 flow rate, wherein the shifted SO2 emission current concentration is equal to the SO2 emission current concentration plus 1;
whether the number of the circulating pumps in the residual operation after the pump stopping is lower than that of the circulating pumps in the current operation or not;
whether the increase and decrease of the number of the circulating pumps are consistent with the change direction of the SO2 discharge value or not;
whether the circulation pump needing to be operated is not operated within 30 minutes, and whether the circulation pump needing to be operated is a hung circulation pump;
a base condition hierarchy, wherein the base condition hierarchy comprises: basic operating mode boiler load and the product of flue gas flow and inlet SO2 concentration;
the operation data of the absorption cycle system based on real-time acquisition and combined with the historical operation data of the unit are analyzed and calculated by a big data means, and the concrete or non-suggested optimal operation scheme under the current working condition comprises the following conditions:
if the net flue gas SO2 concentration is higher than the national standard and the difference between the net flue gas SO2 concentration and the national standard is less than 2 mg, or if the net flue gas SO2 concentration is higher than the emission standard and the difference between the net flue gas SO2 concentration and the emission standard is more than 2 mg, and the load is not reduced in the future 30 minutes, giving a pump-starting recommendation, wherein the pump-starting recommendation comprises: if the circulating pump of the AFT tower is not started, 1 circulating pump of the AFT tower is recommended to be started;
if the AFT tower recycle pump is already on, otherwise another available AFT tower recycle pump is selected.
2. The method for optimizing the operation of an absorption cycle system of a big data-based desulfurization apparatus according to claim 1, wherein: the method for optimizing the operation of the absorption cycle system of the desulphurization device based on the big data comprises the following steps:
if no start-stop suggestion is given for the circulating pump, providing a slurry supply adjustment suggestion, and sending the slurry supply adjustment suggestion to a user;
wherein the adjusting of the stock supply recommendation comprises:
when the SO2 emission value is higher than the emission standard, the pulp supply amount is adjusted to be high: when the emission of SO2 is lower than the emission standard and reaches 2 mg, the pulp supply amount is reduced;
when the pH value of the slurry of the absorption tower is higher than 5.3, the pH value of the slurry of the absorption tower is reduced by 0.2;
when an AFT tower circulating pump is in operation, when the pH value of AFT tower slurry is higher than 6.1, the pH value of the AFT tower slurry is reduced by 0.2, and when the pH value of absorption tower slurry is lower than 4.7, the pH value of the absorption tower slurry is increased by 0.2;
when the circulating pump of the AFT tower is in operation, when the pH value of the slurry of the AFT tower is lower than 5.8, the pH value of the slurry of the AFT tower is increased by 0.2;
when the SO2 emission value is above an emission standard and the SO2 emission value differs from the emission standard by less than 4 milligrams, the magnitude of the turn-down stock supply is reduced.
3. An absorption cycle system, characterized by: the absorption cycle system includes:
the unit is used for carrying out operation monitoring and optimized monitoring on the absorption cycle systems of all the units in the power plant so as to acquire the operation data of the absorption cycle systems;
a unit for analyzing and calculating by means of big data based on the real-time collected operation data of the absorption cycle system and combined with the historical operation data of the unit to give the optimal operation scheme under the current working condition or not to give suggestions;
a unit for providing the optimal operation scheme under the current working condition to a user;
the method comprises the following steps of acquiring the operation data of the absorption cycle system based on real-time acquisition, combining historical operation data of a unit, analyzing and calculating by a big data means, and giving an optimal operation scheme under the current working condition or not giving suggestions specifically:
based on parameters configured in the background, analyzing the logic relation among the parameters, and obtaining the highest pH control value of 5 groups and the optimal operation combination mode recommendation tuning scheme of the circulating pump by the operation of an algorithm model, wherein the parameters configured in the background comprise: historical data of boiler load or raw flue gas flow, raw flue gas SO2 concentration, clean flue gas SO2 concentration, absorption tower slurry pH, AFT tower slurry pH, absorption tower circulating pump operation condition and AFT tower operation condition; and
analyzing the most economical operation mode of the power consumption of the desulfurization device and giving a frequency conversion output value and a circulation pump operation combination mode based on the historical data of boiler load or raw flue gas flow, the concentration of raw flue gas SO2, the concentration of clean flue gas SO2, the current of a circulation pump of an absorption tower, the slurry density of the absorption tower, the current of a circulation pump of an AFT tower, the slurry density of the AFT tower, the current of a vacuum pump and the total power consumption of the desulfurization device;
the operation data of the absorption cycle system based on real-time acquisition and combined with the historical operation data of the unit are analyzed and calculated by a big data means, and the concrete or non-suggested optimal operation scheme under the current working condition comprises the following conditions:
if, after adjustment, the net flue gas SO2 concentration is below emission standards and the net flue gas SO2 concentration differs from the emission standards by less than 2 milligrams, then no suggestion is made;
if, when not adjusted, the net flue gas SO2 concentration is below emission standards and the net flue gas SO2 concentration differs from the emission standards by less than 2 milligrams, then no suggestion is made;
the operation data of the absorption cycle system based on real-time acquisition and combined with the historical operation data of the unit are analyzed and calculated by a big data means, and the concrete or non-suggested optimal operation scheme under the current working condition comprises the following conditions:
if the concentration of the clean flue gas SO2 is lower than a target value, the difference between the concentration of the clean flue gas SO2 and the target value is more than 10 mg, and the load does not increase in the next 30 minutes, performing a pump stopping suggestion search, and sending the searched pump stopping suggestion to a user;
wherein the pump stop suggestion search is based on the following criteria:
whether the corrected SO2 emission amount is between a first value equal to the product of the SO2 emission target concentration and the SO2 flow rate and a second value equal to the product of the shifted SO2 emission current concentration and the SO2 flow rate, wherein the shifted SO2 emission current concentration is equal to the SO2 emission current concentration plus 1;
whether the number of the circulating pumps in the residual operation after the pump stopping is lower than that of the circulating pumps in the current operation or not;
whether the increase and decrease of the number of the circulating pumps are consistent with the change direction of the SO2 discharge value or not;
whether the circulation pump needing to be operated is not operated within 30 minutes, and whether the circulation pump needing to be operated is a hung circulation pump;
a base condition hierarchy, wherein the base condition hierarchy comprises: basic operating mode boiler load and the product of flue gas flow and inlet SO2 concentration;
the operation data of the absorption cycle system based on real-time acquisition and combined with the historical operation data of the unit are analyzed and calculated by a big data means, and the concrete or non-suggested optimal operation scheme under the current working condition comprises the following conditions:
if the net flue gas SO2 concentration is higher than the national standard and the difference between the net flue gas SO2 concentration and the national standard is less than 2 mg, or if the net flue gas SO2 concentration is higher than the emission standard and the difference between the net flue gas SO2 concentration and the emission standard is more than 2 mg, and the load is not reduced in the future 30 minutes, giving a pump-starting recommendation, wherein the pump-starting recommendation comprises: if the circulating pump of the AFT tower is not started, 1 circulating pump of the AFT tower is recommended to be started;
if the AFT tower recycle pump is already on, otherwise another available AFT tower recycle pump is selected.
4. The absorption cycle system of claim 3, wherein: the method for optimizing the operation of the absorption cycle system of the desulphurization device based on the big data comprises the following steps:
if no start-stop suggestion is given for the circulating pump, providing a slurry supply adjustment suggestion, and sending the slurry supply adjustment suggestion to a user;
wherein the adjusting of the stock supply recommendation comprises:
when the SO2 emission value is higher than the emission standard, the pulp supply amount is adjusted to be high: when the emission of SO2 is lower than the emission standard and reaches 2 mg, the pulp supply amount is reduced;
when the pH value of the slurry of the absorption tower is higher than 5.3, the pH value of the slurry of the absorption tower is reduced by 0.2;
when an AFT tower circulating pump is in operation, when the pH value of AFT tower slurry is higher than 6.1, the pH value of the AFT tower slurry is reduced by 0.2, and when the pH value of absorption tower slurry is lower than 4.7, the pH value of the absorption tower slurry is increased by 0.2;
when the circulating pump of the AFT tower is in operation, when the pH value of the slurry of the AFT tower is lower than 5.8, the pH value of the slurry of the AFT tower is increased by 0.2;
when the SO2 emission value is above an emission standard and the SO2 emission value differs from the emission standard by less than 4 milligrams, the magnitude of the turn-down stock supply is reduced.
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| CN110496507B (en) * | 2019-08-12 | 2021-07-13 | 厦门邑通软件科技有限公司 | Method for fitting concentration of calcium sulfite in wet desulphurization process |
| CN110756039B (en) * | 2019-11-29 | 2024-05-24 | 苏州仕净环保科技有限公司 | Flue gas desulfurization system with flue gas monitoring and regulating and controlling functions |
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| CN113062874B (en) * | 2021-02-25 | 2022-11-08 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | Automatic control system for slurry amount of wet desulphurization slurry circulating pump |
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