CN203894650U - Feeding auto-control system for boiler desulphurization - Google Patents
Feeding auto-control system for boiler desulphurization Download PDFInfo
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- CN203894650U CN203894650U CN201420183794.5U CN201420183794U CN203894650U CN 203894650 U CN203894650 U CN 203894650U CN 201420183794 U CN201420183794 U CN 201420183794U CN 203894650 U CN203894650 U CN 203894650U
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- programmable controller
- value
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- desulfurizer
- frequency
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Abstract
A feeding auto-control system for boiler desulphurization adopts a programmable controller control system connected with PH value transmitters and temperature transmitters. A programmable controller timely controls the frequency-conversion frequency of a variable frequency motor according to change in transmitter signals. The temperature transmitters timely monitor the flue gas temperature of a flue gas inlet of a desulfurization tower and the flue gas temperature of a flue gas outlet of the desulfurization tower respectively. The programmable controller timely regulates the frequency-conversion frequency of a variable frequency discharging machine based on change in PH value signals provided by the PH value transmitter A. The programmable controller timely regulates slurry from the desulfurization tower to be returned to an agitating tank or be drained based on change in PH value signals provided by the PH value transmitter B at a slurry outlet of the desulfurization tower. An input module of the programmable controller adopts a touch screen. The programmable controller sends data to be displayed to the touch screen and executes an operation instruction from the touch screen. A power control cabinet can start or stop each controlled device based on instructions sent by the programmable controller.
Description
technical field:
The utility model belongs to boiler desulfurization technical field, relates in particular to a kind of boiler desulfurization feed robot control system(RCS) of fume wet type desulphurization.
background technology:
Existing boiler desulfurization technology can be divided into calcium method, magnesium method, sodium method, ammonia process and organic alkaline process by the kind of desulfurizing agent, by desulfurization method, can be divided into desulfuration in furnace, flue gas dry-type desulfurization, fume wet type desulphurization and half-dried (half is wet) formula desulfurization.
Wherein fume wet type desulphurization is the slurries desulfurization under wet condition with absorbing agent, is mainly to use lime stone (CaCO
3), lime (CaO) or sodium carbonate (Na2CO
3) etc. slurries make absorbing agent, in desulfurizer, remove the SO in flue gas
2, to apply comparatively extensively, technology comparative maturity, has that desulphurization reaction speed is fast, equipment is simple, desulfuration efficiency advantages of higher.
In operational process, the pH value of boiler absorbent slurry density, slurry agitation degree, flue-gas temperature and absorbing agent etc. all affects sweetening process in various degree, monitor various operational factors, and adjust in time, to guarantee absorption tower production and operation under rational operating mode.
Boiler desulfurization control system has other forms to carry out variable frequency control adjusting to absorbing agent pH value at present, when also the flue-gas temperature of inlet and outlet desulfurizer not being carried out to monitoring in real time, by variable frequency adjustment discharging motor speed, regulate the boiler desulfurization feed robot control system(RCS) of the pH value of absorbing agent, and the key command input mode of traditional control system is comparatively backward, complex structure, visual poor.
utility model content:
Technical problem to be solved in the utility model is the situation for prior art, and a kind of boiler desulfurization feed robot control system(RCS) is provided.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of boiler desulfurization feed robot control system(RCS), is characterized in that: frequency conversion feeder, storage tank, frequency conversion discharging machine, tank diameter, frequency conversion hollander, desulfurizer and robot control system(RCS), consist of; Robot control system(RCS) is comprised of touch-screen, programmable controller, pH value transmitter, temperature transmitter, current transducer, frequency converter and power control cabinet.
The feeding port of the storage tank frequency conversion feeder that is located by connecting, the discharging opening of the storage tank frequency conversion discharging machine that is located by connecting, the discharging opening of storage tank is linked in the tank diameter of splendid attire slurries, frequency conversion hollander stirs slurries in tank diameter, tank diameter is connected with desulfurizer pipeline, the slurries outlet location and installation pH value transmitter A of tank diameter, desulfurizer bottom is provided with the slurries outlet that slurries flow out, the slurries outlet location and installation pH value transmitter B of desulfurizer, desulfurizer bottom is provided with smoke inlet, smoke inlet location and installation temperature transmitter A, desulfurizer top is provided with flue gas gas outlet, exhanst gas outlet location and installation temperature transmitter B, pH value transmitter is converted to the pH value of system PH control point current signal and passes to programmable controller, temperature transmitter is converted to the temperature value of system temperature monitoring point current signal and passes to programmable controller, and current transducer is converted to the running current value of controlled plant current signal and passes to programmable controller.
Programmable controller is connected with power control cabinet with touch-screen, pH value transmitter, temperature transmitter, current transducer, frequency converter respectively, programmable controller receives and processes the analog signals that pH value transmitter, temperature transmitter or current transducer transmit, according to the analog signals programmable controller transmitting, change the analog input to frequency converter, cause frequency converter frequency to change, thereby by the variable-frequency motor of Frequency Converter Control also corresponding change rotating speed; The load module of programmable controller adopts touch-screen, the data that programmable controller will show to touch-screen transmission are also carried out the operating instruction that touch-screen is passed to, power control cabinet, according to the instruction of programmable controller issue, starts or stops each controlled plant.
As a kind of technical scheme, the frequency conversion frequency of the variation real-time monitoring frequency conversion discharging machine of the pH value signal that programmable controller provides according to the pH value transmitter A of tank diameter slurries outlet.
As a kind of technical scheme, the slurries that the variation real-time monitoring desulfurizer of the pH value signal that programmable controller provides according to the slurries outlet pH value transmitter B of desulfurizer flows out return to tank diameter or dump.
As a kind of technical scheme, the rotating speed of described frequency conversion feeder is by the instruction direct regulation and control of touch-screen.
As a kind of technical scheme, the rotating speed of described frequency conversion hollander is by the instruction direct regulation and control of touch-screen.
As a kind of technical scheme, the carrying out of the flue-gas temperature signal that programmable controller provides the temperature transmitter B of the flue-gas temperature transmitter A of desulfurizer smoke inlet and desulfurizer exhanst gas outlet monitored in real time.
The utility model adopts the PLC Control System that is connected to PH transmitter and temperature transmitter, compared with prior art, its advantage be when the flue-gas temperature of inlet and outlet desulfurizer is carried out in real time monitoring programmable controller according to the frequency conversion frequency of the variation real-time monitoring variable-frequency motor of transducer signal, regulate the pH value of absorbing agent, and the load module of programmable controller adopts touch-screen, more advanced than the key command input mode of traditional control system, simple and easy, simple in structure, it is convenient to control.
accompanying drawing explanation:
1 one kinds of boiler desulfurization feed robot control system(RCS) structural representations of accompanying drawing.
In figure: frequency conversion material loading motor 1, storage tank 2, frequency conversion discharging motor 3, tank diameter 4, frequency conversion beating motor 5, desulfurizer 6, touch-screen 7, programmable controller 8, pH value transmitter A9, pH value transmitter B10, temperature transmitter A11, temperature transmitter B12 and frequency converter 13.
embodiment:
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
The embodiment of a kind of boiler desulfurization feed of the utility model robot control system(RCS), it comprises that frequency conversion feeder, storage tank 2, frequency conversion discharging machine, tank diameter 4, frequency conversion hollander, desulfurizer 6 and robot control system(RCS) form; Robot control system(RCS) is comprised of touch-screen 7, programmable controller 8, pH value transmitter, temperature transmitter, current transducer, frequency converter 13 and power control cabinet.
The feeding port of the storage tank 2 frequency conversion feeder that is located by connecting, frequency conversion feeder is driven by frequency conversion material loading motor 1, thus frequency conversion feeder is transported to absorbing agent in storage tank 2, the instruction direct regulation and control that the rotating speed of frequency conversion feeder is inputted by touch-screen 7; The discharging opening of the storage tank 2 frequency conversion discharging machine that is located by connecting, the discharging opening of storage tank 2 is linked in the tank diameter 4 of splendid attire slurries, according to the instruction of touch-screen 7 inputs, frequency conversion discharging machine is driven with certain rotating speed by frequency conversion discharging motor 3, thereby absorbing agent is transported in tank diameter 4 from storage tank 2; Just the frequency beating motor 5 of frequency conversion hollander drives the rotor of frequency conversion hollanders to stir slurries in tank diameter 4, the instruction direct regulation and control that the rotating speed of frequency conversion hollander is inputted by touch-screen 7, tank diameter 4 is connected with desulfurizer 6 pipelines, and slurries are entered in desulfurizer 6 by tank diameter 4.
The slurries outlets location and installation pH value transmitter A9 of tank diameter 4, can time real monitoring by tank diameter 4, flow out the PH value of slurries and pH value be converted to current signal and pass to programmable controller 8, desulfurizer 6 bottoms are provided with the slurries outlet that slurries flow out, the slurries outlet location and installation pH value transmitter B10 of desulfurizer 6, can time real monitoring by desulfurizer 6, flow out the PH value of slurries and pH value be converted to current signal and pass to programmable controller 8, desulfurizer 6 bottoms are provided with smoke inlet, smoke inlet location and installation temperature transmitter A11, while being used for, monitor in fact the temperature of desulfurizer 6 smoke inlets and temperature value is converted to current signal and pass to programmable controller 8, desulfurizer 6 tops are provided with flue gas gas outlet, exhanst gas outlet location and installation temperature transmitter B12, while being used for, monitor in fact the temperature of desulfurizer 6 exhanst gas outlets and temperature value is converted to current signal and pass to programmable controller 8.
Programmable controller 8 is connected with power control cabinet with touch-screen 7, pH value transmitter, temperature transmitter, current transducer, frequency converter 13 respectively, programmable controller 8 receives and processes the analog signals that pH value transmitter, temperature transmitter or current transducer transmit, the analog input changing frequency converter 13 according to the analog signals programmable controller 8 transmitting, cause frequency converter 13 frequency shifts, thus also corresponding change rotating speed of the variable-frequency motor of being controlled by frequency converter 13; The load module of programmable controller 8 adopts touch-screen 7, programmable controller 8 transmits to touch-screen 7 real-time PH and the temperature data being sent by pH value transmitter or temperature transmitter, the various data such as various variable-frequency motor rotating speeds that frequency conversion feeder, frequency conversion discharging machine or frequency conversion hollander send in addition are also carried out the operating instruction that touch-screen 7 is passed to, power control cabinet, according to the instruction of programmable controller 8 issues, starts or stops each controlled plant.
In specific implementation process, the variation real-time monitoring of the pH value signal that the frequency conversion frequency of frequency conversion discharging machine is provided according to the pH value transmitter A9 of the slurries outlet of tank diameter 4 by programmable controller 8, pH value transmitter A9 passes to programmable controller 8 by the pH value signal constantly changing, programmable controller 8 carries out computing and comparison by this signal, when pH value is inputted the pH value higher limit of the tank diameter 4 slurries outlets of setting higher than touch-screen 7, programmable controller 8 is by reducing the analog input to frequency converter 13, reduce the rotating speed of frequency conversion discharging machine, reduce feeding coal to reduce the pH value of absorbent slurry, otherwise, when the pH value of tank diameter 4 slurries outlets is inputted the pH value lower limit of the tank diameter 4 slurries outlets of setting lower than touch-screen 7, programmable controller 8 is by increasing the analog input to frequency converter 13, improve the rotating speed of frequency conversion discharging machine, increase feeding coal to improve the pH value of absorbent slurry, by constantly adjusting, the pH value of tank diameter 4 inner absorbent slurries is stably kept in allowed limits.
The best loop slurry pH value of different desulfurizing agents is different, and the impact that pH value reacts to each other on slurries interionic is very large, directly have influence on the desulfuration efficiency of desulfurizer 6, can set as the case may be the bound of pH value, the addition that changes absorbing agent is controlled the pH value of slurries, adapts to the situation of different loop slurries.
In specific implementation process, pH value transmitter B10 passes to programmable controller 8 by the pH value signal constantly changing, the slurries that the variation real-time monitoring desulfurizer 6 of the pH value signal that programmable controller 8 provides according to the slurries outlet pH value transmitter B10 of desulfurizer 6 flows out return to tank diameter 4 or dump, by constantly adjusting, the absorbent slurry that can reuse that makes that desulfurizer 6 flows out returns to storage tank 2 and recycles, if the absorbent slurry that desulfurizer 6 flows out is not suitable for recycling, be discharged discarded.
The utility model carries out frequency conversion real-time monitoring to affecting the several key parameters of desulfurization performance, optimize the system operation, improve desulfuration efficiency, employing is connected to programmable controller 8 control system of PH transmitter and temperature transmitter, by temperature transmitter, the flue-gas temperature of the flue-gas temperature of desulfurizer 6 smoke inlets and desulfurizer 6 exhanst gas outlets is monitored in real time, the frequency conversion frequency of variable-frequency motor is passed to the variation real-time monitoring of transducer signal by programmable controller 8 simultaneously; Adopt touch-screen 7 as the load module of programmable controller 8, simple and easy, simple in structure, it is convenient to control.
Claims (6)
1. a boiler desulfurization feed robot control system(RCS), is characterized in that: frequency conversion feeder, storage tank, frequency conversion discharging machine, tank diameter, frequency conversion hollander, desulfurizer and robot control system(RCS), consist of; Robot control system(RCS) is comprised of touch-screen, programmable controller, pH value transmitter, temperature transmitter, current transducer, frequency converter and power control cabinet;
The feeding port of the storage tank frequency conversion feeder that is located by connecting, the discharging opening of the storage tank frequency conversion discharging machine that is located by connecting, the discharging opening of storage tank is linked in the tank diameter of splendid attire slurries, frequency conversion hollander stirs slurries in tank diameter, tank diameter is connected with desulfurizer pipeline, the slurries outlet location and installation pH value transmitter A of tank diameter, desulfurizer bottom is provided with the slurries outlet that slurries flow out, the slurries outlet location and installation pH value transmitter B of desulfurizer, desulfurizer bottom is provided with smoke inlet, smoke inlet location and installation temperature transmitter A, desulfurizer top is provided with flue gas gas outlet, exhanst gas outlet location and installation temperature transmitter B, pH value transmitter is converted to the pH value of system PH control point current signal and passes to programmable controller, temperature transmitter is converted to the temperature value of system temperature monitoring point current signal and passes to programmable controller, and current transducer is converted to the running current value of controlled plant current signal and passes to programmable controller,
Programmable controller is connected with power control cabinet with touch-screen, pH value transmitter, temperature transmitter, current transducer, frequency converter respectively, programmable controller receives and processes the analog signals that pH value transmitter, temperature transmitter or current transducer transmit, according to the analog signals programmable controller transmitting, change the analog input to frequency converter, cause frequency converter frequency to change, thereby by the variable-frequency motor of Frequency Converter Control also corresponding change rotating speed; The load module of programmable controller adopts touch-screen, the data that programmable controller will show to touch-screen transmission are also carried out the operating instruction that touch-screen is passed to, power control cabinet, according to the instruction of programmable controller issue, starts or stops each controlled plant.
2. a kind of boiler desulfurization feed robot control system(RCS) as claimed in claim 1, is characterized in that, the frequency conversion frequency of the variation real-time monitoring frequency conversion discharging machine of the pH value signal that programmable controller provides according to the pH value transmitter A of tank diameter slurries outlet.
3. a kind of boiler desulfurization feed robot control system(RCS) as claimed in claim 1, it is characterized in that, the slurries that the variation real-time monitoring desulfurizer of the pH value signal that programmable controller provides according to the slurries outlet pH value transmitter B of desulfurizer flows out return to tank diameter or dump.
4. any one boiler desulfurization feed robot control system(RCS) as described in claim 1-3, is characterized in that, the rotating speed of described frequency conversion feeder is by the instruction direct regulation and control of touch-screen.
5. any one boiler desulfurization feed robot control system(RCS) as described in claim 1-3, is characterized in that, the rotating speed of described frequency conversion hollander is by the instruction direct regulation and control of touch-screen.
6. any one boiler desulfurization feed robot control system(RCS) as described in claim 1-3, it is characterized in that, the carrying out of the flue-gas temperature signal that programmable controller provides the temperature transmitter B of the flue-gas temperature transmitter A of desulfurizer smoke inlet and desulfurizer exhanst gas outlet monitored in real time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420183794.5U CN203894650U (en) | 2014-04-16 | 2014-04-16 | Feeding auto-control system for boiler desulphurization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420183794.5U CN203894650U (en) | 2014-04-16 | 2014-04-16 | Feeding auto-control system for boiler desulphurization |
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| Publication Number | Publication Date |
|---|---|
| CN203894650U true CN203894650U (en) | 2014-10-22 |
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ID=51721027
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420183794.5U Expired - Fee Related CN203894650U (en) | 2014-04-16 | 2014-04-16 | Feeding auto-control system for boiler desulphurization |
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|---|---|
| CN (1) | CN203894650U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110292844A (en) * | 2019-06-25 | 2019-10-01 | 四川省星船城水泥股份有限公司 | A kind of new dry process preheater kiln tail smoke-box |
| CN114682161A (en) * | 2020-12-26 | 2022-07-01 | 黄华丽 | Solid-liquid different-weight mixed slurry material storage tank and application thereof |
-
2014
- 2014-04-16 CN CN201420183794.5U patent/CN203894650U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110292844A (en) * | 2019-06-25 | 2019-10-01 | 四川省星船城水泥股份有限公司 | A kind of new dry process preheater kiln tail smoke-box |
| CN114682161A (en) * | 2020-12-26 | 2022-07-01 | 黄华丽 | Solid-liquid different-weight mixed slurry material storage tank and application thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141022 Termination date: 20180416 |