CN203362476U - Slurry circulating pump energy saving control system in wet desulphurization process - Google Patents
Slurry circulating pump energy saving control system in wet desulphurization process Download PDFInfo
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- CN203362476U CN203362476U CN 201320358916 CN201320358916U CN203362476U CN 203362476 U CN203362476 U CN 203362476U CN 201320358916 CN201320358916 CN 201320358916 CN 201320358916 U CN201320358916 U CN 201320358916U CN 203362476 U CN203362476 U CN 203362476U
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Abstract
The utility model discloses a slurry circulating pump energy saving control system in the wet desulphurization process. The energy saving control system comprises a field instrument signal acquisition device, a frequency conversion and speed regulation device, an automatic control device and an operation display device, wherein the rotating speed of a slurry circulating pump can be regulated according to signals such as exhaust gas flow signals, exhaust gas sulphur content signals and liquid-gas ratio signals in the position of the field instrument signal acquisition device. According to the slurry circulating pump energy saving control system, the frequency conversion and speed regulation control is conducted on the slurry circulating pump in the wet desulphurization process, the rotating speed of the slurry circulating pump is regulated according to the smoke parameters, and therefore the problem that in the traditional process, the energy consumption is high due to the fact that a slurry circulating pump can not automatically adjust the rotating speed and runs at a high speed for a long time is solved.
Description
Technical field
The utility model relates to the Wet Flue Gas Desulfurization Technique field, particularly the frequency converter power-saving technology of slurry circulating pump, specifically energy-saving control system and the energy-saving control method of slurry circulating pump in a kind of wet desulfurizing process.
Background technique
Because containing element sulphur in coal, contain the environment harmful components such as sulfur dioxide in its flue gas after coal burning, usually adopt wet desulfurizing process to remove this harmful components.Wet desulfurizing process completes in desulfurizing tower, flue gas enters backward flowing in desulfurizing tower from the desulfurizing tower middle part, desulfurization slurry gets off from top jet after the slurry circulating pump pressurization, like this in tower, carry out chemical reaction between flue gas and desulfurization slurry, generate in the slurry pool at the bottom of calcium sulfite is down to tower, and be forced to be oxidized to stable calcium sulfate gypsum discharge in slurry pool, deliver to tower top after the interior unreacted desulfurization slurry of slurry pool repeats again to be pressurizeed by slurry circulating pump and carry out recirculation.Usually, keep high speed operation after the normal startup of slurry circulating pump.But, different due to sulfur-bearing composition in coal and produce load variations, sulphur content in flue gas flow and flue gas is changing all the time, slurry circulating pump but can not be corresponding to this variation output rotating speed regulation of flue gas, can only keep high speed operation, thereby be difficult to reach the purpose that reduces energy consumption, wasted a large amount of electric energy.
For the slurry circulating pump that makes wet desulfurizing process can be under the precondition that meets desulfurization demand and device security reliable operation energy-saving run, the utility model proposes energy-saving control system and the method for slurry circulating pump in a kind of wet desulfurizing process.
The model utility content
The utility model provides energy-saving control system and the energy-saving control method of slurry circulating pump in a kind of wet desulfurizing process, for solving existing wet desulfurizing process, slurry circulating pump can not move according to the load variations adjusting rotary speed, thereby wasted a large amount of electric energy, can not accomplish the difficult problem of energy-saving run.
The purpose of this utility model is achieved by the following scheme:
The energy-saving control system of slurry circulating pump in a kind of wet desulfurizing process comprises:
The field instrument signal pickup assembly, for gathering into tower flue gas parameter and device action parameter; Wherein, the field instrument signal pickup assembly can be: pressure transmitter, temperature transmitter, SO
2concentration detector, pressure difference transmitter, flow transmitter, encoder, various relays etc., the equipment of the said equipment action parameter indication is the various device in wet desulfurizing process, such as entrance air door, booster fan, slurry circulating pump, converter plant, pressure transducer, flushing valve etc.; The Common Parameters that the device action parameter is the said equipment, as entrance throttle opening etc.;
Frequency-converting control device, be connected in slurry circulating pump, for regulating the rotating speed of controlling slurry circulating pump; Frequency-converting control device is to adopt the device that frequency conversion is the speed governing means, can adopt variable frequency pump;
Operation display device, for showing the running state of each device, wherein said device is the various devices in this energy-saving control system; Operation display device can adopt process control machine, desktop computer or liquid crystal display etc.;
Automatic controller, the instrument signal gathered for receiving the field instrument signal pickup assembly, analyze judgement, determines the frequency of desulfurization slurry circulation demand and frequency-converting control device operation, and, to frequency-converting control device output control signal, on operation display device, export operation information; Automatic controller can adopt PLC controller, DCS, single-chip microcomputer, process control machine etc.The control mode of automatic controller can be that open loop is controlled, and can be also closed loop control.
In addition, described automatic controller also can be used for receiving the signal that described operation display device sends.The signal that described operation display device sends can comprise usually: operation frequency, incoming line cabinet start and stop, frequency variator start and stop, work frequency conversion bypass etc.
Preferably, described automatic controller is start and stop or the switch for controlling described slurry circulating pump also, a non-limitative example can realizing this function is: between automatic controller and contactor to slurry circulating pump power supply, by control cables, be connected, when needs start slurry circulating pump, automatic controller sends actuating signal to contactor, the contactor adhesive, give the power supply of slurry circulating pump motor, thereby can start slurry circulating pump, when needs stop, automatic controller sends stop signal to contactor, contactor disconnects, slurry circulating pump motor dead electricity, stop slurry circulating pump.In addition, in slurry circulating pump power supply line, all right Series Frequency Conversion device, open to accomplish the soft of slurry circulating pump.
Usually, the collection of described field instrument signal pickup assembly enters the tower flue gas parameter and can comprise flue gas flow, pressure, temperature, pressure reduction, concentration, sulphur content, desulfurization degree, liquid-gas ratio etc.
Above-mentioned energy-saving control system is for wet desulfurizing process, the wet desulfurizing process flow process is: desulfurization slurry enters slurry circulating pump (wherein slurry circulating pump can have one or more) after a hand control valve door filters, above-mentioned energy-saving control system can be according to the rotating speed that enters tower flue gas parameter and device action parameter control one or more slurry circulating pump wherein, desulfurization slurry enters main line through another manual control valve after slurry circulating pump boosts, and the one group of shower nozzle arranged in each spraying layer position via main line is injected into drop, with the flue gas haptoreaction.
Compared with prior art, the beneficial effects of the utility model are as follows:
Slurry circulating pump energy-saving control system of the present utility model and energy-saving control method are assessed the slurries circulating load based on signals such as flue gas flow, concentration, desulfurization degree, liquid-gas ratios, and by the rotating speed of regulating slurry circulating pump, the slurries circulating load is controlled, have and reaching automatic function of regulating slurries circulating load and slurry circulating pump rotating speed in expection desulfurized effect situation, thereby the rotating speed of slurry circulating pump can be regulated according to Gas Parameters, needn't keep high speed operation always, realize saving the effect of electric energy.
Certainly, implement arbitrary product of the present utility model and might not need to reach above-described all advantages simultaneously.
The accompanying drawing explanation
The structural representation of the energy-saving control system of slurry circulating pump in the wet desulfurizing process that Fig. 1 is the utility model embodiment 1.
Embodiment
Below with specific embodiment, the utility model is further described.
Embodiment 1
Referring to Fig. 1, the energy-saving control system of the present embodiment slurry circulating pump is applied to following wet desulfurizing process: desulfurization slurry enters slurry circulating pump B after hand control valve A filters, enter main line D through another hand control valve C after being boosted by slurry circulating pump B, and be injected into drop via main line D at one group of shower nozzle J of each spraying layer position setting, with the flue gas haptoreaction.Wherein, energy-saving control system is connected in slurry circulating pump.Slurry circulating pump can have one or more, above-mentioned energy-saving control system can be according to the rotating speed that enters tower flue gas parameter and device action parameter control one or more slurry circulating pump wherein, thereby the slurries circulating load is controlled, and slurry circulating pump needn't maintain high speed operation, saved electric energy.
The energy-saving control system of slurry circulating pump in this wet desulfurizing process comprises:
Field instrument signal pickup assembly I, for gathering Gas Parameters and device action parameter; The field instrument signal pickup assembly can be pressure transmitter, temperature transmitter, SO
2concentration detector, pressure difference transmitter, flow transmitter, encoder, various relays etc.; Gas Parameters can comprise flue gas flow, pressure, temperature, pressure reduction, concentration etc., but the equipment of collecting work parameter is the various device in wet desulfurizing process, such as entrance air door, booster fan, slurry circulating pump, converter plant, pressure transducer, flushing valve etc.; The Common Parameters that the device action parameter is the said equipment, as entrance throttle opening etc.;
Frequency-converting control device G, be connected in slurry circulating pump B, for regulating the rotating speed of controlling slurry circulating pump B; Frequency-converting control device can adopt variable frequency pump;
Operation display device H, for showing the running state of each device, wherein said device is the various devices in this energy-saving control system; Operation display device can adopt process control machine, desktop computer or liquid crystal display etc.;
Automatic controller F, the instrument signal gathered for receiving field instrument signal pickup assembly I, analyze judgement, determine the frequency of desulfurization slurry circulation demand and frequency-converting control device G operation, and to frequency-converting control device G output control signal, to the upper output of operation display device H operation information; Automatic controller can adopt PLC controller, DCS, single-chip microcomputer, process control machine etc.The control mode of automatic controller can be that open loop is controlled, and can be also closed loop control.
In addition, automatic controller F can also receive the signal that operation display device H sends, and these signals can comprise usually: operation frequency, incoming line cabinet start and stop, frequency variator start and stop, work frequency conversion bypass etc.
Automatic controller F also controls start and stop or the switch of slurry circulating pump B; specifically in the present embodiment; between automatic controller F and the contactor of giving slurry circulating pump B power supply, by control cables, be connected; when needs start slurry circulating pump B; automatic controller F sends actuating signal to contactor; the contactor adhesive; give the power supply of slurry circulating pump motor; thereby can start slurry circulating pump B; when needs stop, automatic controller F sends stop signal to contactor, and contactor disconnects; slurry circulating pump motor dead electricity, stop slurry circulating pump B.In addition, in slurry circulating pump power supply line, all right Series Frequency Conversion device, open to accomplish the soft of slurry circulating pump B.
In the utility model, slurry circulating pump can have many, and above-mentioned energy-saving control system can be controlled the rotating speed of one or more slurry circulating pump wherein, or slurry circulating pump only has one, and above-mentioned energy-saving control system is controlled the rotating speed of this slurry circulating pump.
Utilize the slurry circulating pump energy-saving control system of the present embodiment slurry circulating pump in wet desulfurizing process to be carried out to the method for Energy Saving Control, comprise: field instrument signal pickup assembly I detects the parameter into tower flue gas, as flue gas flow, pressure, temperature, pressure reduction, concentration etc., and the instrument signal such as device action, and these instrument signals are delivered to automatic controller F, automatic controller F analyzes judgement, calculate desulfurization slurry circulating load demand according to the normal operation demand of these parameter informations and whole desulfurizing tower system, the frequency of frequency-converting control device G operation, and export corresponding control signal in conjunction with the running state of each equipment to frequency-converting control device G, frequency-converting control device G receives above-mentioned control signal and controls the rotating speed of slurry circulating pump B, automatic controller F also to the upper output of operation display device H operation information, exports corresponding control signal to various device as incoming line cabinet, frequency variator, flushing valve switch etc. simultaneously.In addition, automatic controller F also receives the signal on operation display device H, and realizes start and stop or the switch of slurry circulating pump B are controlled.
In addition, can also the state of each equipment in the slurry circulating pump energy-saving control system be monitored, and send in time warning message and carry out the chaser protection.Specifically in the present embodiment; the equipment that sends warning message and carry out the chaser protection is mainly automatic controller F, and it relies on the signals such as temperature that on-the-spot measuring instrument detects, pressure, electric current and judges whether to send according to preset value and report to the police and the chaser signal.As surpassing, the bearing of motor, stator temperature set alarming value; frequency variator inside or room temperature are too high, electric current is excessive, owe equal all can cause warning; after warning occurring; if do not taken measures; running state further worsens; just may cause equipment emergency shutdown protection equipment, carry out the chaser protection.The information that field instrument signal pickup assembly I gathers is uploaded to automatic controller F, by it, is processed, and sends and reports to the police and the chaser signal.
Above disclosed the utility model preferred embodiment is just for helping to set forth the utility model.Preferred embodiment does not have all details of detailed descriptionthe, and also not limiting this model utility is only described embodiment.Obviously, according to the content of this specification, can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to explain better principle of the present utility model and practical application, thereby under making, the technical field technician can understand and utilize the utility model well.The utility model only is subject to the restriction of claims and four corner and equivalent.
Claims (5)
1. the energy-saving control system of slurry circulating pump in a wet desulfurizing process, is characterized in that, comprising:
The field instrument signal pickup assembly, for gathering into tower flue gas parameter and device action parameter;
Frequency-converting control device, be connected in slurry circulating pump, for regulating the rotating speed of slurry circulating pump;
Operation display device, for showing the running state of each device;
Automatic controller, the instrument signal gathered for receiving the field instrument signal pickup assembly, analyze judgement, determines the frequency of desulfurization slurry circulation demand and frequency-converting control device operation, and, to frequency-converting control device output control signal, on operation display device, export operation information.
2. the energy-saving control system of slurry circulating pump in wet desulfurizing process as claimed in claim 1, is characterized in that, the signal that described automatic controller also sends for receiving described operation display device.
3. the energy-saving control system of slurry circulating pump in wet desulfurizing process as claimed in claim 1 or 2, is characterized in that, described automatic controller is start and stop or the switch for controlling described slurry circulating pump also.
4. the energy-saving control system of slurry circulating pump in wet desulfurizing process as claimed in claim 1, is characterized in that, describedly enters the tower flue gas parameter and comprise flue gas flow, pressure, temperature, pressure reduction, concentration.
5. the energy-saving control system of slurry circulating pump in wet desulfurizing process as claimed in claim 1, is characterized in that, described frequency-converting control device is variable frequency pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320358916 CN203362476U (en) | 2013-06-21 | 2013-06-21 | Slurry circulating pump energy saving control system in wet desulphurization process |
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| CN 201320358916 CN203362476U (en) | 2013-06-21 | 2013-06-21 | Slurry circulating pump energy saving control system in wet desulphurization process |
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| CN203362476U true CN203362476U (en) | 2013-12-25 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321885A (en) * | 2013-06-21 | 2013-09-25 | 上海宝钢节能技术有限公司 | Energy-saving control system and energy-saving control method for slurry circulating pumps in wet desulfurization process |
| CN108939893A (en) * | 2017-05-19 | 2018-12-07 | 大唐环境产业集团股份有限公司 | A kind of serum recycle device and dispatching method |
| CN109852451A (en) * | 2018-12-21 | 2019-06-07 | 中国神华能源股份有限公司 | The control method and control device of desulphurization system |
-
2013
- 2013-06-21 CN CN 201320358916 patent/CN203362476U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321885A (en) * | 2013-06-21 | 2013-09-25 | 上海宝钢节能技术有限公司 | Energy-saving control system and energy-saving control method for slurry circulating pumps in wet desulfurization process |
| CN108939893A (en) * | 2017-05-19 | 2018-12-07 | 大唐环境产业集团股份有限公司 | A kind of serum recycle device and dispatching method |
| CN108939893B (en) * | 2017-05-19 | 2021-04-09 | 大唐环境产业集团股份有限公司 | Slurry circulating device and scheduling method |
| CN109852451A (en) * | 2018-12-21 | 2019-06-07 | 中国神华能源股份有限公司 | The control method and control device of desulphurization system |
| CN109852451B (en) * | 2018-12-21 | 2021-08-10 | 中国神华能源股份有限公司 | Control method and control device for desulfurization system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANGHAI BAOSTEEL ENERGY-SAVING + ENVIRONMENTAL-PR Free format text: FORMER NAME: SHANGHAI BAOSTEEL ENERGY TECHNOLOGY CO., LTD. |
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| CP03 | Change of name, title or address |
Address after: 201999 Baoshan District, G Road, Lane No. 550, No. 7, business building, floor 2, level 3, level Patentee after: SHANGHAI BAOSTEEL ENERGY-SAVING ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. Address before: 201999, room 1813, 3245 Mudanjiang Road, Shanghai, Baoshan District Patentee before: Shanghai Baosteel Energy Tech Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131225 Termination date: 20180621 |
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| CF01 | Termination of patent right due to non-payment of annual fee |