CN110090534A - Control and detection method for desulfurizer - Google Patents
Control and detection method for desulfurizer Download PDFInfo
- Publication number
- CN110090534A CN110090534A CN201910267805.5A CN201910267805A CN110090534A CN 110090534 A CN110090534 A CN 110090534A CN 201910267805 A CN201910267805 A CN 201910267805A CN 110090534 A CN110090534 A CN 110090534A
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- Prior art keywords
- calcium hydroxide
- technique
- conveyer
- concentration
- water pump
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- 238000001514 detection method Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 75
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 68
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 61
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 39
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 39
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 39
- 230000001105 regulatory effect Effects 0.000 claims abstract description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 29
- 238000006243 chemical reaction Methods 0.000 claims description 8
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims description 7
- 239000010985 leather Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 7
- 239000003546 flue gas Substances 0.000 abstract description 7
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract description 3
- 235000011941 Tilia x europaea Nutrition 0.000 abstract description 3
- 239000004571 lime Substances 0.000 abstract description 3
- 238000006477 desulfuration reaction Methods 0.000 abstract description 2
- 230000023556 desulfurization Effects 0.000 abstract description 2
- 235000011116 calcium hydroxide Nutrition 0.000 abstract 3
- 238000007599 discharging Methods 0.000 abstract 2
- 230000001276 controlling effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 239000007921 spray Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/30—Controlling by gas-analysis apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/346—Controlling the process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/604—Hydroxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention relates to a control and detection method of a desulfurizer, and SO of a desulfurizer charging system2Concentration signal collector detects SO often2Comparing the concentration with the highest set value to determine whether the air compressor needs to be started; detecting the instant pressure value of the gas storage tank, and determining thatIf not, starting the process water pump; sequentially opening the electric regulating valve of the process water, starting the slaked lime conveyor and the lime discharging machine, and adding slaked lime and water into the desulfurizing tower; and controlling the air compressor, the process water pump, the process water electric regulating valve, the slaked lime conveyor and the ash discharging machine to stop. Through a specific desulfurizer feeding system, the system can detect the SO in the flue gas at any time in the operation process of the desulfurization equipment2And according to SO2The concentration of the desulfurizer is automatically judged whether the desulfurizer charging system is to be opened or closed, and an operator does not need to monitor SO constantly2The working load and the labor intensity of operators are reduced.
Description
Technical field
The invention belongs to environmental protection technical fields, belong to the SO in cigarette enterprise removal boiler smoke2A kind of desulfurization
Agent controls detection method.
Background technique
Desulfurizing agent charging system is the important component of semi-dry desulphurization equipment, and main function is desulphurization plant operation
In the process, suitable desulfurizing agent is added into desulfurizing tower, removes the SO in boiler smoke2, it is ensured that SO2Qualified discharge, semidry method are de-
Sulphur equipment desulfurizer therefor is calcium hydroxide and water.In the industrial production, in order to energy-saving, desulfurizing agent charging system is not held generally
Reforwarding row, only as boiler smoke SO2In the case that content is higher, just starts charging system, work as SO2Concentration drops to a fixed number
When value, charging system is closed.
There are many subsidiary equipment of desulfurizing agent charging system, and when starting must successively start in sequence, common at present
Desulfurizing agent charging system mainly by manual operation, flue gas SO is monitored when operator takes2Concentration, work as SO2Concentration is higher
When, start charging system, works as SO2When concentration drops to certain numerical value, charging system is closed.The large labor intensity of operator,
And if operator be busy with other work cannot start and stop charging system in time, be likely to result in flue gas SO2Content is exceeded or makes
At the waste of desulfurizing agent.
Summary of the invention
The object of the present invention is to provide a kind of desulfurizing agents to control detection method, cannot to solve existing desulfurizing agent charging system
Automatic running causes flue gas SO2The problem of content is exceeded or desulfurizing agent is caused to waste.
The present invention is achieved by the following technical solutions:
A kind of desulfurizing agent control detection method, comprising the following steps:
The SO of desulfurizing agent charging system2Concentration signal collector constantly detects SO2Concentration, and with highest set value carry out
It compares, if more than setting value, then starts air compressor machine；
The instant pressure value for detecting air accumulator is compared with setting working pressure, if pressure value is greater than or waits immediately
In setting working pressure, start technique water pump；
Process water electric control valve is successively opened again, is started calcium hydroxide conveyer and ash ejector, is added and disappears into desulfurizing tower
Lime and water；
SO in desulfurizing tower is detected simultaneously2Concentration, and be compared with minimum setting value, if SO in desulfurizing tower2Concentration it is small
When the minimum setting value,
Control the air compressor machine, the technique water pump, the process water electric control valve, the calcium hydroxide conveyer and institute
State ash ejector stopping.
The niter ash quantity that the calcium hydroxide conveyer is conveyed into the desulfurizing tower according to the instant pressure value of air accumulator and
The hydraulic pressure value of technique water pump determines jointly, to realize the calcium hydroxide entered in the desulfurizing tower as leather hard.
The hydraulic pressure value of the technique water pump matches with the instant pressure value of the air accumulator, to reach electronic from process water
The process water that the technique sprinkler head of regulating valve sprays reaches the atomizing particle degree of setting.
SO2Concentration signal collector is set to the bottom of chimney.
The calcium hydroxide conveyer is screw conveyor.
The ash ejector is frequency conversion ash ejector.
The desulfurizing agent charging system includes:
Niter ash cellar is connect by pipeline with ash ejector；
The ash ejector is connect by pipeline with calcium hydroxide conveyer；
One end of the calcium hydroxide conveyer is protruded into desulfurizing tower；
Technique water pump, by piping connection, the other end passes through pipeline technique for one end of the technique water pump and technique water tank
The connection of water electric control valve, one end of technique sprinkler head are connect with the outlet of the process water electric control valve, the process water
Spray head is set in the desulfurizing tower；
One end of air accumulator is connected by the outlet of pipeline and air compressor machine, and the other end passes through pipeline and process water motorized adjustment
The arrival end of valve connects；
SO2Concentration signal collector is set to the bottom of chimney；
The SO2Concentration signal collector, the ash ejector, the calcium hydroxide conveyer, the technique water pump and described
Air compressor machine passes through electric signal and connect with controller.
The beneficial effects of the present invention are:
It can be according to flue gas SO2Concentration value automatic start-stop desulfurizing agent charging system, do not have to manual operation, alleviate operation
The labor intensity and work load of personnel；The wasting of resources is avoided, energy consumption has been saved, effectively increases the operation effect of desulphurization plant
Rate, it is ensured that flue gas SO2Standard discharge.
Detailed description of the invention
Fig. 1 is logic schematic diagram of the invention；
Fig. 2 is process flow chart of the invention.
Description of symbols
1- niter ash cellar；2- frequency conversion ash ejector；3- screw conveyor；4- technique water tank；5- technique water pump；The spray of 6- process water
Head；7- air accumulator；8- air compressor machine；9- spiral conveying tube；10- desulfurizing tower；11- deduster；12- chimney；13-SO2Concentration signal
Collector.
Specific embodiment
Carry out the technical solution that the present invention will be described in detail by the following examples, embodiment below is merely exemplary, only
It can be used to explanation and illustration technical solution of the present invention, and be not to be construed as the limitation to technical solution of the present invention.
As shown in Fig. 2, the application provides a kind of desulfurizing agent charging system of automatic control, including niter ash cellar 1 passes through pipe
Road is connect with frequency conversion ash ejector 2, and when charging system controller sends enabling signal to frequency conversion ash ejector, ash ejector will by pipeline
Calcium hydroxide in niter ash cellar is drawn on calcium hydroxide conveyer, and the calcium hydroxide conveyer of the application is screw conveyor 3.
One end of the spiral conveying tube 9 of the calcium hydroxide conveyer is protruded into desulfurizing tower 10, is received in calcium hydroxide conveyer
To after the enabling signal of charging system controller, the calcium hydroxide that frequency conversion ash ejector is discharged is brought into desulfurizing tower by rotating,
In embodiments herein, one end that the spiral conveying tube of calcium hydroxide conveyer protrudes into desulfurizing tower is located at upper inside desulfurizing tower
Side.
Technique water pump 5, by piping connection, the other end passes through club man for one end of the technique water pump 5 and technique water tank 4
The connection of skill water electric control valve, one end of technique sprinkler head 6 are connect with the outlet of the process water electric control valve, the technique
Sprinkler head is set in the desulfurizing tower, is set to the lower section of desulfurizing tower, and the ejiction opening of technique sprinkler head is upward.
The technique sprinkler head of the application is internal-mixing air atomizing shower nozzle, is mounted on inside desulfurizing tower by flanged joint.
One end of air accumulator 7 is connect by pipeline with the outlet of air compressor machine 8, and the other end passes through pipeline and process water electric adjustable
Save the arrival end connection of valve.
Sulfur removal technology water and compressed air are in air atomizing shower nozzle internal mix, under the action of compressed air, process water
The process water that spray head sprays reaches suitable atomizing particle degree, and (atomizing particle, which can according to need, to carry out setting value, for example reaches
Grain diameter can according to need such as 10-150 microns of variation etc., carry out to the calcium hydroxide for entering desulfurizing tower by screw conveyor
Humidification.
The top outlet of desulfurizing tower 10 is connect by pipeline with the entrance of deduster 11, the outlet of deduster 11 and chimney 12
Entrance connection, SO2Concentration signal collector 13 is set to the bottom of chimney.SO in flue gas can constantly be detected2Concentration, so
Pass through data line afterwards for SO2Concentration signal passes to charging system data processor and compares and analyzes.
As shown in Figure 1, the application also provides a kind of desulfurizing agent control detection method, comprising the following steps:
The SO of desulfurizing agent charging system2Concentration signal collector constantly detects SO2Concentration, and will test data and pass to
System controller, and be compared with highest set value, the highest set value in the present embodiment can be according to the method law of country
The setting such as the regulation of rule or the needs of itself, setting value has to the maximum of the laws and regulations less than country according to their needs
Permissible value then starts air compressor machine if more than setting value；The effect of air compressor machine is to supplement compressed air for air accumulator.
The instant pressure value for detecting air accumulator is compared with setting working pressure, if pressure value is greater than or waits immediately
In setting working pressure, start technique water pump；If the instant pressure value of air accumulator is less than setting working pressure, need to postpone
Start technique water pump, sets working pressure until the pressure value in limited time of air accumulator is greater than or equal to, the setting in the present embodiment
Working pressure is for guaranteeing being sufficiently mixed for process water and air.
Process water electric control valve is successively opened again, is started calcium hydroxide conveyer and ash ejector, is added and disappears into desulfurizing tower
Lime and water；The niter ash quantity that calcium hydroxide conveyer is conveyed into the desulfurizing tower is according to the instant pressure value and technique of air accumulator
The hydraulic pressure value of water pump determines jointly, to realize the calcium hydroxide entered in the desulfurizing tower as leather hard.It is when air accumulator
When pressure value air compressor machine start in the case where, from be equal to setting working pressure be lifted up during, the unit of air accumulator
The air capacity provided in time also accordingly increases, at this point, if the hydraulic pressure value of technique water pump remains unchanged, the process water of unit
The amount relative increase of the compressed air of interior indentation will increase in the sulfur limitation effect entered in desulfurizing tower, can subtract in right amount accordingly
The supply of few calcium hydroxide；If the hydraulic pressure value of technique water pump increases, corresponding mixed air capacity is reduced, and from technique
The amount for the mixing water that sprinkler head sprays is increase accordingly, and in order to guarantee that calcium hydroxide is leather hard, needs to improve calcium hydroxide conveyer
Supply.
SO in desulfurizing tower is detected simultaneously2Concentration, and be compared with minimum setting value, if SO in desulfurizing tower2Concentration it is small
When the minimum setting value, this minimum setting value can be setting themselves value, be also possible to the fixed numerical value of relevant laws and regulations.
Control the air compressor machine, the technique water pump, the process water electric control valve, the calcium hydroxide conveyer and institute
State ash ejector stopping.The sequence of stopping is usually to close the frequency conversion ash ejector, then turns off calcium hydroxide and screw conveyor,
Process water electric control valve, stop process water pump are closed, air compressor machine is turned off.
Control working principle:
As shown in Figure 1 and Figure 2, SO is housed in chimney bottom2Concentration signal collector can constantly detect SO2Concentration, it is right
Compare SO2Concentration value and setting value, work as SO2When excessive concentration, system can start air compressor machine automatically, then detect the pressure of air accumulator
Parameter, when reservoir pressure reaches operating pressure, technique water pump starts automatically, then successively opens process water motorized adjustment again
Calcium hydroxide and water are added into desulfurizing tower for valve, calcium hydroxide screw conveyor and frequency conversion ash ejector, reduce SO2Concentration；Work as SO2's
When concentration drops to certain numerical value, system can successively close the corresponding equipment of desulfurizing agent charging system in a reverse order, keep away
Exempt from the waste of desulfurizing agent.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And deformation, the scope of the present invention is by appended claims and its equivalent limits.
Claims (7)
1. a kind of desulfurizing agent controls detection method, which comprises the following steps:
The SO of desulfurizing agent charging system2Concentration signal collector constantly detects SO2Concentration, and be compared with highest set value,
If more than setting value, then start air compressor machine；
The instant pressure value for detecting air accumulator is compared with setting working pressure, is set if instant pressure value is greater than or equal to
Determine working pressure, starts technique water pump；
Process water electric control valve is successively opened again, starts calcium hydroxide conveyer and ash ejector, calcium hydroxide is added into desulfurizing tower
And water；
SO in desulfurizing tower is detected simultaneously2Concentration, and be compared with minimum setting value, if SO in desulfurizing tower2Concentration be less than institute
When stating minimum setting value,
Control the air compressor machine, the technique water pump, the process water electric control valve, the calcium hydroxide conveyer and the row
Grey machine stops.
2. desulfurizing agent according to claim 1 controls detection method, which is characterized in that the calcium hydroxide conveyer is to described
The niter ash quantity conveyed in desulfurizing tower determines jointly according to the instant pressure value of air accumulator and the hydraulic pressure value of technique water pump, to realize
It is leather hard into the calcium hydroxide in the desulfurizing tower.
3. desulfurizing agent according to claim 1 controls detection method, which is characterized in that the hydraulic pressure value of the technique water pump with
The instant pressure value of the air accumulator matches, to reach the process water sprayed from the technique sprinkler head of process water electric control valve
Reach the atomizing particle degree of setting.
4. desulfurizing agent according to claim 1 controls detection method, which is characterized in that SO2Concentration signal collector is set to
The bottom of chimney.
5. desulfurizing agent according to claim 1 controls detection method, which is characterized in that the calcium hydroxide conveyer is spiral
Conveyer.
6. desulfurizing agent according to claim 1 controls detection method, which is characterized in that the ash ejector is frequency conversion ash discharge
Machine.
7. desulfurizing agent according to claim 1 controls detection method, which is characterized in that the desulfurizing agent charging system packet
It includes:
Niter ash cellar is connect by pipeline with ash ejector；
The ash ejector is connect by pipeline with calcium hydroxide conveyer；
One end of the calcium hydroxide conveyer is protruded into desulfurizing tower；
Technique water pump, by piping connection, the other end passes through pipeline technique water power for one end of the technique water pump and technique water tank
Dynamic regulating valve connection, one end of technique sprinkler head are connect with the outlet of the process water electric control valve, the technique sprinkler head
It is set in the desulfurizing tower；
One end of air cushion tank is connected by the outlet of pipeline and air compressor machine, and the other end passes through pipeline and process water motorized adjustment
The arrival end of valve connects；
SO2Concentration signal collector is set to the bottom of chimney；
The SO2Concentration signal collector, the ash ejector, the calcium hydroxide conveyer, the technique water pump and the air compressor machine
It is connect by electric signal with controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910267805.5A CN110090534A (en) | 2019-04-03 | 2019-04-03 | Control and detection method for desulfurizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910267805.5A CN110090534A (en) | 2019-04-03 | 2019-04-03 | Control and detection method for desulfurizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110090534A true CN110090534A (en) | 2019-08-06 |
Family
ID=67444358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910267805.5A Pending CN110090534A (en) | 2019-04-03 | 2019-04-03 | Control and detection method for desulfurizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110090534A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111659235A (en) * | 2020-05-22 | 2020-09-15 | 红云红河烟草(集团)有限责任公司 | Control method for boiler flue gas desulfurization by utilizing steam humidification |
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| CN105536490A (en) * | 2015-12-23 | 2016-05-04 | 北京首钢自动化信息技术有限公司 | Automatic desulfurization system and method for sintering flue gas |
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-
2019
- 2019-04-03 CN CN201910267805.5A patent/CN110090534A/en active Pending
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|---|---|---|---|---|
| CN101332400A (en) * | 2008-07-18 | 2008-12-31 | 朱学智 | Method for spraying calcium and devulcanizing in circulating fluid-bed boiler using PLC control system |
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| CN111659235A (en) * | 2020-05-22 | 2020-09-15 | 红云红河烟草(集团)有限责任公司 | Control method for boiler flue gas desulfurization by utilizing steam humidification |
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Application publication date: 20190806 |