CN109966839A - A kind of desulfurization dust-removal system - Google Patents
A kind of desulfurization dust-removal system Download PDFInfo
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- CN109966839A CN109966839A CN201910322254.8A CN201910322254A CN109966839A CN 109966839 A CN109966839 A CN 109966839A CN 201910322254 A CN201910322254 A CN 201910322254A CN 109966839 A CN109966839 A CN 109966839A
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- dust
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/346—Controlling the process
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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Abstract
A kind of desulfurization dust-removal system, including cleaner, desulphurization plant, washing facility and monitoring device, wherein, flue gas passes through cleaner, desulphurization plant, become dustless sweet gas body after washing facility, and it is discharged into atmosphere, cleaner includes filter bag, poppet, by-passing valve, cylinder, impulse electromagnetic valve, dedusting warehouse, ash bucket, cabinet, air-purifying chamber, blower, separator and dust exhaustor, desulphurization plant includes desulfurizing tower, process water pond, circulating water pool, slurries pump, circulating pump, flushing pump, scouring electromagnetic valve, water supply solenoid valve and flue entrance cooling solenoid valve, washing facility includes sprayer, Wen's grid, cyclone separator sum aggregate pendular ring, monitoring device includes work station, desulphurization control platform, dedusting console, wash console, sensor, the data that work station comes up to acquisition monitor, controlled device is controlled System, sets involved parameter, desulphurization control platform controls rotary atomizer using fuzzy-adaptation PID control.
Description
Technical field
The invention belongs to desulfurization and dedusting field, in particular to a kind of desulfurization dust-removal system.
Background technique
In order to inhibit the content of sulfur dioxide and particulate matter in atmosphere to increase, early in 19th-century various countries just set about into
The related R&D work of row, but the high-speed developing period of desulfurization and dedusting technology truly starts from the middle of last century.Flue gas
Desulfurization and dedusting is a kind of technology worldwide widely applied, and whether recycling according to desulfurization product, flue gas desulfurization technique can
It is divided into product and abandons method and product recovery, product recovery is that SOz is fixed as to sulfuric acid, sulphur, chemical fertilizer and other useful objects
Matter, recycling desulfurization product will increase the operating cost of the investment and desulphurization system of a part, and compared with product recovery, product is thrown
The investment of abandoning method and operating cost are lower, but solid, liquid waste pollution processing problem and the recycling problem of Sulphur ressource are equal
It is unable to get effective solution, and cannot achieve effectively removing and realize recycling to flue gas particle.
Summary of the invention
To solve the above problems, the present invention provides a kind of desulfurization dust-removal system.
The technical solution of the present invention is as follows: a kind of desulfurization dust-removal system, including cleaner, desulphurization plant, washing facility with
And monitoring device, wherein flue gas becomes dustless sweet gas body after cleaner, desulphurization plant, washing facility, and is discharged into big
In gas,
Cleaner include filter bag, poppet, by-passing valve, cylinder, impulse electromagnetic valve, dedusting warehouse, ash bucket, cabinet, air-purifying chamber,
Blower, separator and dust exhaustor are mentioned comprising impulse electromagnetic valve when dedusting warehouse is in filtration condition in each dedusting cabin room
Lift valve is in the open state, and dusty gas is sent in dedusting cabin room by air-introduced machine, in the middle part of inertia force and gravity gas
Divide large dust particle to be separated, falls directly into hopper bottom；Flue gas enters the cabinet of separator by loudspeaker opening, in wind
Under the action of machine, flue gas is contacted with the airflow-distribution board of separator, has dust collection electric field, middle granule dust between airflow-distribution board
It charges, and is deposited under electric field force effect to the dust collector pole of separator, dust exhaustor rapping and/or blowback dust collector pole in the electric field,
The middle granule dust being collected falls off from pole plate and falls into ash bucket；Flue gas containing little particle dust enters filter by porous plate
Bag, when ash-laden gas passes through filter bag, little particle dust is delayed in filter bag surface, and pure flue gas enters upper from filter bag inner cavity
The air-purifying chamber in portion, then boosted valve enter desulphurization plant;
Desulphurization plant includes desulfurizing tower, process water pond, circulating water pool, slurries pump, circulating pump, flushing pump, scouring electromagnetic valve, moisturizing
Solenoid valve and flue entrance cooling solenoid valve, desulfurizing tower include rotary atomizer, high-order smoke distributor and the distribution of low level flue gas
Device, flue gas enter desulfurizing tower by the high-order smoke inlet and low level smoke inlet being mounted at the top and bottom of desulfurizing tower, respectively
After high-order smoke distributor and low level smoke distributor, flow direction is mounted on high-order smoke distributor and low level smoke distributor
Rotary atomizer between connection, rotary atomizer are that fair current sprays mode, and slurries are pumped the magnesium hydroxide slurry of process water pond
It is delivered to the liquid inlet at the top of desulfurizing tower, and then is sprayed on rotary atomizer, is acted in the high speed rotation of rotary atomizer
Under, slurries are atomized, and after smoke contacts untreated in desulfurization zone, are suspended in sulfur dioxide in flue gas gas and slurries
Magnesium hydroxide particle occurs chemical reaction and is absorbed, and the moisture of droplet is evaporated, and becomes dry desulfurization product, dry desulfurization
Product is expelled directly out in tower bottom, and the flue gas after desulfurization is discharged by the exhanst gas outlet of desulfurization tower bottom, into washing facility；
Washing facility includes sprayer, Wen's grid, cyclone separator sum aggregate pendular ring, by cleaner, the flue gas of desulphurization plant
It is come into full contact with into washing facility and Wen's grid, sprayer is atomized after obtaining water from process water pond and sprays to Wen's grid, will be in flue gas
Impurity sufficiently combined with water, the water containing impurity is separated under the action of cyclone separator and import collection pendular ring in, cocurrent
Enter circulating water pool, to realize that washing is further purified in flue gas；
Monitoring device includes work station, desulphurization control platform, dedusting console, washing console, sensor, and work station is in acquisition
The data come are monitored, are controlled controlled device, are set to involved parameter, and work station is logical using PPI
Letter agreement is communicated with desulphurization control platform, dedusting console, washing console, desulphurization control platform, dedusting console, washing control
Platform processed obtains the state of desulphurization plant, cleaner, washing facility respectively, and to desulphurization plant, cleaner, washing facility into
Row control, desulphurization control platform, dedusting console, washing console between communicated by Modbus rtu protocol, desulphurization plant removes
Dirt equipment, washing facility are equipped with sensor, for the detection of temperature, pressure, liquid level, material position, weight and pH value, obtain desulfurization
The inlet temperature of tower, tower body temperature, magnesia powder storehouse material level, magnesia powder cabin weight, the outlet hydraulic of each pump, tower body pressure
Power, water supply tank liquid level, tower body top and the bottom pressure difference, serum pot pH value, and to each pump, Ge Gefa, blender, cylinder, vibration
Sieve, sprayer, cyclone separator, deduster are controlled, and realize desulfurization, dedusting and purifying, and desulphurization control platform uses fuzzy
PID control controls rotary atomizer.
Beneficial effects of the present invention:
1) it present invention uses dedusting, desulfurization, the triple processes of washing, effectively realizes to the complete of the dust of flue gas and sulfide
The filtering of emaciated face sulphur；
2) cleaner uses triple filter, reaches the filtering of fining
3) desulphurization plant has smoke distributor and has used rotary atomizer, is uniformly distributed the flue gas flow field in desulfurizing tower,
Guarantee that the drop of flue gas and atomization sufficiently combines, realize the abundant reactive absorption of sulfur oxide gas, rationally determines flue gas and droplet
The time of contact, it is thus possible to obtain maximum removal efficiency, and can sufficiently in drying tower magnesium hydroxide slurry droplet；
4) circulating water pool and process water pond realize the reasonable utilization with water,
5) Wen's grid structure of washing facility realizes the further comprehensive decontamination of gaseous impurity after desulfurization, to reach flue gas
Discharge standard；
6) it is accurately controlled using the revolving speed that fuzzy control realizes desulfurizing tower rotary atomizer, to ensure that sufficiently having for desulfurization
Effect carries out.
Detailed description of the invention
Fig. 1 is that system of the invention constitutes schematic diagram；
Fig. 2 is Structure of Flue Gas Desulfuration Absorbing figure of the invention.
Specific embodiment
The present invention will be further described below with reference to the accompanying drawings and embodiments.
The embodiment of the present invention is with reference to shown in Fig. 1-2.
A kind of desulfurization dust-removal system, including cleaner, desulphurization plant, washing facility and monitoring device, wherein flue gas
Become dustless sweet gas body after cleaner, desulphurization plant, washing facility, and be discharged into atmosphere,
Cleaner include filter bag, poppet, by-passing valve, cylinder, impulse electromagnetic valve, dedusting warehouse, ash bucket, cabinet, air-purifying chamber,
Blower, separator and dust exhaustor include pulse valve in each dedusting cabin room, when dedusting warehouse is in filtration condition, poppet
In the open state, dusty gas is sent in dedusting cabin room by air-introduced machine, big by part in inertia force and gravity gas
Granule dust is separated, and falls directly into hopper bottom；Flue gas enters the cabinet of separator by loudspeaker opening, in blower
Under effect, flue gas is contacted with the airflow-distribution board of separator, has dust collection electric field between airflow-distribution board, middle granule dust is in electricity
It charges in, and is deposited under electric field force effect to the dust collector pole of separator, dust exhaustor rapping and/or blowback dust collector pole are received
The middle granule dust of collection falls off from pole plate and falls into ash bucket；Flue gas containing little particle dust enters filter bag by porous plate,
When ash-laden gas passes through filter bag, little particle dust is delayed in filter bag surface, and pure flue gas enters top from filter bag inner cavity
Air-purifying chamber, then boosted valve enters desulphurization plant;
The dust for needing to remove filter bag surface when the dedusting resistance of filter bag reaches threshold value, by being opened and closed promotion at the appointed time
Valve realizes the removal of dust, specifically, closing poppet, after 0.1-0.15 seconds, opens poppet, gas can be full of entire filter
Bag, the dust of filter bag surface reach dust removing effects since air scour effect is by off into ash bucket；
Desulphurization plant includes desulfurizing tower, process water pond, circulating water pool, slurries pump, circulating pump, flushing pump, scouring electromagnetic valve, moisturizing
Solenoid valve and flue entrance cooling solenoid valve,
Desulfurizing tower includes rotary atomizer, high-order smoke distributor and low level smoke distributor,
Flue gas enters desulfurizing tower by the high-order smoke inlet and low level smoke inlet being mounted at the top and bottom of desulfurizing tower, respectively
After high-order smoke distributor and low level smoke distributor, flow direction is mounted on high-order smoke distributor and low level smoke distributor
Rotary atomizer between connection, rotary atomizer are that fair current sprays mode, and slurries are pumped the magnesium hydroxide slurry of process water pond
It is delivered to the liquid inlet at the top of desulfurizing tower, and then is sprayed on rotary atomizer, is acted in the high speed rotation of rotary atomizer
Under, slurries are atomized, and after smoke contacts untreated in desulfurization zone, are suspended in sulfur dioxide in flue gas gas and slurries
Magnesium hydroxide particle occurs chemical reaction and is absorbed, and the moisture of droplet is evaporated, and becomes dry desulfurization product, dry desulfurization
Product is expelled directly out in tower bottom, and the flue gas after desulfurization is discharged by the exhanst gas outlet of desulfurization tower bottom, into washing facility；
It is equipped with awning at the top of desulfurizing tower and atomizer overhauls electricity consumption hoist, wraps up rock wool heat-preservation material, outer overlapping colours outside tower body
Color contour plate；
High-order smoke distributor and low level smoke distributor can be such that the flue gas flow field in desulfurizing tower is uniformly distributed, guarantee flue gas and
The drop of atomization sufficiently combines, and keeps the quality occurred between flue gas and drop and heat transfer faster, makes dry and reaction condition
Reach best condition；It can rationally determine the time that flue gas is contacted with droplet again simultaneously, it is thus possible to maximum removal efficiency is obtained, and
And can sufficiently in drying tower magnesium hydroxide slurry droplet.
Circulating water pool includes sedimentation basin and water supply tank, and the impure water of washing facility flows into sedimentation basin and precipitated, sunk
Suction pump is arranged in shallow lake pond top, water is pumped into water supply tank, the impurity of precipitating enters ash bucket, and water a part of water supply tank is by rinsing
Pump and scouring electromagnetic valve are rinsed the rotary atomizer in desulfurizing tower, prevent under time control and pressure difference control mode
Block rotary atomizer；Water a part of water supply tank enters high-order smoke inlet and low level cigarette by flushing pump and cooling solenoid valve
Gas entrance, atomization spray into flue gas, reduce the flue-gas temperature of high-order smoke inlet and low level smoke inlet；Water a part of water supply tank
The water tank of process water pond is flowed by circulating pump, carries out moisturizing；When the liquid level of water supply tank is less than 1.5m, moisturizing electricity is turned on
Magnet valve closes water supply solenoid valve when the liquid level of water supply tank is greater than 4m；
Wherein, magnesium hydroxide slurry, which is sent into desulfurizing tower to occur to chemically react with sulfur dioxide gas, generates magnesium sulfite；
Process water pond includes magnesia powder cabin, water tank, serum pot, level-sensing device, deduster,
Magnesia powder is by the way that in pneumatic conveying to magnesia powder cabin, level-sensing device continuously examines the material position in magnesia powder cabin
It surveys, silo roof is arranged deduster and carries out pressure release, the weight of the spiral weighing balance detection magnesia below magnesia powder cabin, magnesia powder
Storehouse provides magnesia powder to serum pot, and magnesia powder is sent into serum pot according to constant weight,
Water tank supplies water under my effect of suction pump to serum pot, and chemistry occurs under the action of blender for magnesia powder and water
Reaction generates magnesium hydroxide slurry,
Serum pot lower part is equipped with vibrating screen, and the ororrhea by stirring was trickled vibrating screen, sifts out not less than 20 purposes
Grain, sieved qualified slurries flow into the serum pot arrived positioned at lower section, and the impurity and block material on sieve are emptied by evacuated tube,
Slurries pump is installed below serum pot, magnesium hydroxide slurry is transported to by desulfurizing tower top by pipeline and valve control.
Serum pot is arranged sensor and monitors pH value, and when serum pot pH value is less than 5.2, magnesia powder cabin is automatically to serum pot
Magnesia powder is added, when serum pot pH value is greater than 6.2, magnesia powder cabin stops addition magnesia powder, works as magnesium hydroxide slurry
PH value when reaching the requirement of setting value, pumped using slurries and slurries be sent to desulfurizing tower；
Washing facility includes sprayer, Wen's grid, cyclone separator sum aggregate pendular ring, by cleaner, the flue gas of desulphurization plant
It is come into full contact with into washing facility and Wen's grid, sprayer is atomized after obtaining water from process water pond and sprays to Wen's grid, will be in flue gas
Impurity sufficiently combined with water, the water containing impurity is separated under the action of cyclone separator and import collection pendular ring in, cocurrent
Enter circulating water pool, to realize that washing is further purified in flue gas.Wherein, it is in rectangle that Wen's grid are wedge shaped, intermediate by several both ends
Venturi grid plate composition arranged in parallel, the flat shape runner of contraction section, trunnion section and expansion segment, warp are then formed between venturi grid plate
The gas for crossing washing is discharged into atmosphere by chimney.
Monitoring device includes work station, desulphurization control platform, dedusting console, washing console, sensor, and work station is to adopting
Collect the data come up to be monitored, controlled device is controlled, involved parameter is set, work station utilizes
PPI communication protocol and desulphurization control platform, dedusting console, washing console are communicated, desulphurization control platform, dedusting console,
Washing console obtains the state of desulphurization plant, cleaner, washing facility respectively, and to desulphurization plant, cleaner, washing
Equipment is controlled, desulphurization control platform, dedusting console, washing console between communicated by Modbus rtu protocol, desulfurization
Equipment, cleaner, washing facility are equipped with sensor, for the detection of temperature, pressure, liquid level, material position, weight and pH value,
Obtain the inlet temperature of desulfurizing tower, tower body temperature, magnesia powder storehouse material level, magnesia powder cabin weight, each pump outlet hydraulic,
Tower body pressure, water supply tank liquid level, tower body top and the bottom pressure difference, serum pot pH value, and to each pump, Ge Gefa, blender, gas
Cylinder, vibrating screen, sprayer, cyclone separator, deduster are controlled, and realize desulfurization, dedusting and purifying, and desulphurization control platform
Rotary atomizer is controlled using fuzzy-adaptation PID control.
Wherein, desulphurization control platform includes fuzzy control device, and the fuzzy control device is by difference engine, differentiator, blurring
Interface, output quantity conversion module, inference machine, knowledge base composition, velocity sensor is by the speed signal of the rotary atomizer measured
It is supplied to difference engine by bandpass filter, difference engine subtracts each other the speed of the speed for the setting that operator inputs and measurement
To error amount, error value E obtains error rate by differentiator, error amountAnd error rateIt mentions
Defuzzification interface is supplied, to error amountAnd error rateBlurring assignment is carried out, blurring error is respectively obtained
ValueWith blurring error change value, it is blurred error amountWith blurring error change valueIt is supplied to reasoning
Machine, inference machine according in knowledge base input and output degree of membership vector value and reasoning from logic rule to blurring error amount
With blurring error change valueIt carries out fuzzy reasoning and obtains fuzzy control quantity, output quantity conversion module is by Fuzzy Control
Amount processedBe converted to practical control amount, according to practical control amountIt controls power supply and provides voltage to rotary atomizer.
Fuzzy-adaptation PID control specifically: according to selection parameter PL, PB of the linguistic variable of operator, PM, PS, ZO, NS,
NM, NB, BL respectively indicate positive super large, honest, center, it is just small, zero, bear in small, negative, bear big, negative super large, corresponding fuzzy set,For the fuzzy collection variable of primary；
Determine quantizing factor,, wherein,For error amount quantizing factor,For the worst error value of measurement,,For error rate quantizing factor,For the worst error change rate of measurement,
If, then it is blurred error amountBy rounding up,It is fuzzy for secondary
Collection variable；
If, then it is blurred error amountFor；
If, then it is blurred error amountFor；
If, then it is blurred error change valueBy rounding up；
If, then it is blurred error change valueFor；
If, then it is blurred error change valueFor。
Wherein, knowledge base includes database and rule base,
The fuzzy membership vector value of input, output variable is stored in database, this vector value is input, output quantity by corresponding to
The set of corresponding value after the discretizations such as domain then can be used as subordinating degree function, if corresponding domain is continuous for defeated
The fuzzy variable entered, subordinating degree function are stored in database, provide data to inference machine in fuzzy reasoning relationship.
Fuzzy rule is stored in rule base, fuzzy rule is the experience of operator's long-term accumulation and combines expertise
On the basis of formed, expressed by the vocabulary of relevant logical relation, such as if-then, else, end, and, or etc..
Being precisely controlled for rotary atomizer speed may be implemented by fuzzy control, reduce the modification repeatedly manually set
The inaccuracy of waste and precision in bring efficiency.
Embodiment described above only expresses one embodiment of the present invention, and but it cannot be understood as to this
The limitation of invention scope.It should be pointed out that for those of ordinary skill in the art, in the premise for not departing from present inventive concept
Under, various modifications and improvements can be made, and these are all within the scope of protection of the present invention.
Claims (8)
1. a kind of desulfurization dust-removal system, including cleaner, desulphurization plant, washing facility and monitoring device, wherein flue gas warp
Become dustless sweet gas body after crossing cleaner, desulphurization plant, washing facility, and be discharged into atmosphere,
Cleaner include filter bag, poppet, by-passing valve, cylinder, impulse electromagnetic valve, dedusting warehouse, ash bucket, cabinet, air-purifying chamber,
Blower, separator and dust exhaustor are mentioned comprising impulse electromagnetic valve when dedusting warehouse is in filtration condition in each dedusting cabin room
Lift valve is in the open state, and dusty gas is sent in dedusting cabin room by air-introduced machine, in the middle part of inertia force and gravity gas
Divide large dust particle to be separated, falls directly into hopper bottom；Flue gas enters the cabinet of separator by loudspeaker opening, in wind
Under the action of machine, flue gas is contacted with the airflow-distribution board of separator, has dust collection electric field, middle granule dust between airflow-distribution board
It charges, and is deposited under electric field force effect to the dust collector pole of separator, dust exhaustor rapping and/or blowback dust collector pole in the electric field,
The middle granule dust being collected falls off from pole plate and falls into ash bucket；Flue gas containing little particle dust enters filter by porous plate
Bag, when ash-laden gas passes through filter bag, little particle dust is delayed in filter bag surface, and pure flue gas enters upper from filter bag inner cavity
The air-purifying chamber in portion, then boosted valve enter desulphurization plant;
Desulphurization plant includes desulfurizing tower, process water pond, circulating water pool, slurries pump, circulating pump, flushing pump, scouring electromagnetic valve, moisturizing
Solenoid valve and flue entrance cooling solenoid valve, desulfurizing tower include rotary atomizer, high-order smoke distributor and the distribution of low level flue gas
Device, flue gas enter desulfurizing tower by the high-order smoke inlet and low level smoke inlet being mounted at the top and bottom of desulfurizing tower, respectively
After high-order smoke distributor and low level smoke distributor, flow direction is mounted on high-order smoke distributor and low level smoke distributor
Rotary atomizer between connection, rotary atomizer are that fair current sprays mode, and slurries are pumped the magnesium hydroxide slurry of process water pond
It is delivered to the liquid inlet at the top of desulfurizing tower, and then is sprayed on rotary atomizer, is acted in the high speed rotation of rotary atomizer
Under, slurries are atomized, and after smoke contacts untreated in desulfurization zone, are suspended in sulfur dioxide in flue gas gas and slurries
Magnesium hydroxide particle occurs chemical reaction and is absorbed, and the moisture of droplet is evaporated, and becomes dry desulfurization product, dry desulfurization
Product is expelled directly out in tower bottom, and the flue gas after desulfurization is discharged by the exhanst gas outlet of desulfurization tower bottom, into washing facility；
Washing facility includes sprayer, Wen's grid, cyclone separator sum aggregate pendular ring, by cleaner, the flue gas of desulphurization plant
It is come into full contact with into washing facility and Wen's grid, sprayer is atomized after obtaining water from process water pond and sprays to Wen's grid, will be in flue gas
Impurity sufficiently combined with water, the water containing impurity is separated under the action of cyclone separator and import collection pendular ring in, cocurrent
Enter circulating water pool, to realize that washing is further purified in flue gas；
Monitoring device includes work station, desulphurization control platform, dedusting console, washing console, sensor, and work station is in acquisition
The data come are monitored, are controlled controlled device, are set to involved parameter, and work station is logical using PPI
Letter agreement is communicated with desulphurization control platform, dedusting console, washing console, desulphurization control platform, dedusting console, washing control
Platform processed obtains the state of desulphurization plant, cleaner, washing facility respectively, and to desulphurization plant, cleaner, washing facility into
Row control, desulphurization control platform, dedusting console, washing console between communicated by Modbus rtu protocol, desulphurization plant removes
Dirt equipment, washing facility are equipped with sensor, for the detection of temperature, pressure, liquid level, material position, weight and pH value, obtain desulfurization
The inlet temperature of tower, tower body temperature, magnesia powder storehouse material level, magnesia powder cabin weight, the outlet hydraulic of each pump, tower body pressure
Power, water supply tank liquid level, tower body top and the bottom pressure difference, serum pot pH value, and to each pump, Ge Gefa, blender, cylinder, vibration
Sieve, sprayer, cyclone separator, deduster are controlled, and realize desulfurization, dedusting and purifying, and desulphurization control platform uses fuzzy
PID control controls rotary atomizer.
2. a kind of desulfurization dust-removal system according to claim 1, it is characterised in that: when the dedusting resistance of filter bag reaches threshold value
When need to remove the dust of filter bag surface, the removal of dust is realized by being opened and closed poppet at the appointed time, specifically, closing
Poppet opened poppet after 0.1-0.15 seconds, and gas can be full of entire filter bag, and the dust of filter bag surface is due to gas punching
Brush is acted on by off into ash bucket.
3. a kind of desulfurization dust-removal system according to claim 1, it is characterised in that: be equipped with awning and atomization at the top of desulfurizing tower
Device overhauls electricity consumption hoist, wraps up rock wool heat-preservation material outside tower body, is cladded with colour contour plate.
4. a kind of desulfurization dust-removal system according to claim 1, it is characterised in that: circulating water pool includes sedimentation basin and water supply
Tank, the impure water of washing facility flow into sedimentation basin and are precipitated, and suction pump is arranged in sedimentation basin top, and water is pumped into and is supplied water
Tank, the impurity of precipitating enter ash bucket, and water a part of water supply tank passes through flushing pump and scouring electromagnetic valve, in time control and pressure difference
Under control mode, the rotary atomizer in desulfurizing tower is rinsed, prevents blocking rotary atomizer；Water a part of water supply tank
Enter high-order smoke inlet and low level smoke inlet by flushing pump and cooling solenoid valve, atomization sprays into flue gas, reduces high-order cigarette
The flue-gas temperature of gas entrance and low level smoke inlet；Water a part of water supply tank flows into the water storage of process water pond by circulating pump
Tank carries out moisturizing；When the liquid level of water supply tank is less than 1.5m, water supply solenoid valve is turned on, when the liquid level of water supply tank is greater than 4m,
Close water supply solenoid valve.
5. a kind of desulfurization dust-removal system according to claim 4, it is characterised in that: process water pond include magnesia powder cabin,
Water tank, serum pot, level-sensing device, deduster,
Magnesia powder is by the way that in pneumatic conveying to magnesia powder cabin, level-sensing device continuously examines the material position in magnesia powder cabin
It surveys, silo roof is arranged deduster and carries out pressure release, the weight of the spiral weighing balance detection magnesia below magnesia powder cabin, magnesia powder
Storehouse provides magnesia powder to serum pot, and magnesia powder is sent into serum pot according to constant weight,
Water tank supplies water under the action of suction pump to serum pot, and chemistry occurs under the action of blender for magnesia powder and water instead
Magnesium hydroxide slurry should be generated,
Slurries pump is installed below serum pot, magnesium hydroxide slurry is transported to by desulfurizing tower top by pipeline and valve control.
6. a kind of desulfurization dust-removal system according to claim 5, it is characterised in that: serum pot lower part is equipped with vibration
Sieve, the ororrhea by stirring were trickled vibrating screen, and the particle not less than 20 mesh is sifted out, and sieved qualified slurries flow into place
Serum pot in lower section, impurity and block material on sieve are emptied by evacuated tube.
7. a kind of desulfurization dust-removal system according to claim 6, it is characterised in that: serum pot is arranged sensor and monitors pH
Value, when serum pot pH value is less than 5.2, magnesia powder cabin adds magnesia powder to serum pot automatically, when serum pot pH value is greater than
When 6.2, magnesia powder cabin stops addition magnesia powder, when the pH value of magnesium hydroxide slurry reaches the requirement of setting value, uses
Slurries are sent to desulfurizing tower by slurries pump.
8. a kind of desulfurization dust-removal system according to claim 1, it is characterised in that: Wen's grid are wedge shaped by several both ends,
Centre is in the venturi grid plate composition arranged in parallel of rectangle, is then formed with contraction section, trunnion section and expansion segment between venturi grid plate
Flat shape runner is discharged into atmosphere by chimney by the gas of washing.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112360430A (en) * | 2020-11-04 | 2021-02-12 | 中国石油大学(北京) | Experimental device for crack leaking stoppage simulation evaluation |
| CN112588094A (en) * | 2020-12-23 | 2021-04-02 | 安徽欣创节能环保科技股份有限公司 | Byproduct recycling system applied to SDA (serial data architecture) desulfurization process |
| CN113694674A (en) * | 2021-10-28 | 2021-11-26 | 江苏嘉旺建材科技有限公司 | Bag type dust collector convenient to maintain |
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Application publication date: 20190705 |