CN207507256U - A kind of semi-dry desulphurization control system and semi-dry desulphurization dedusting work system - Google Patents
A kind of semi-dry desulphurization control system and semi-dry desulphurization dedusting work system Download PDFInfo
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- CN207507256U CN207507256U CN201721474605.XU CN201721474605U CN207507256U CN 207507256 U CN207507256 U CN 207507256U CN 201721474605 U CN201721474605 U CN 201721474605U CN 207507256 U CN207507256 U CN 207507256U
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Abstract
The utility model provides a kind of semi-dry desulphurization control system and semi-dry desulphurization dedusting work system, is related to desulfurization and dedusting technology field.A kind of semi-dry desulphurization control system, including：Device, bag filter are sent in desulfurizing tower, desulfurizing agent Storing and conveying device, process water waterworks, compressed air storage.The gas inlet of desulfurizing tower is provided with rotary atomization device；Desulfurizing agent Storing and conveying device is connect with desulfurizing tower, and desulfurizing agent Storing and conveying device includes being used for as the desulfurizing agent charging gear of desulfurizing tower conveying desulfurizing agent and the desulfurizing agent powder cabin for feeding desulfurizing agent；Process water waterworks are connected with rotary atomization device；Bag filter is connected with the first outlet pipeline of desulfurizing tower；Compressed air storage send device to be connected respectively with rotary atomization device and bag filter.The utilization rate of desulfurizing agent can be effectively improved, and then improves desulfuration efficiency, while high-effective dust-removing, improves device operating load adjustability, realizes safety and economic operation.
Description
Technical field
The utility model is related to desulfurization and dedusting technology field, in particular to a kind of semi-dry desulphurization control system with
And semi-dry desulphurization dedusting work system.
Background technology
Summary of Semi-dry Flue Gas Desulfurization has the Some features of dry method and wet method concurrently, and existing wet desulphurization reaction speed is fast, de-
The advantages of sulphur efficiency is high, and have the easy-to-handle benefit of product after dry method without sewage discharge, desulfurization.Simultaneously invest it is relatively low,
The advantages of desulfuration efficiency is relatively high, and equipment dependability is high, and operating cost is relatively low.Existing technology passes through development for many years,
Through overcome desulfurizer easily collapse bed, it is easy to wear, system resistance is big the shortcomings that, however desulfuration efficiency is low, easy in desulfurizer
The defects of fouling, load adjustability are poor, and operational efficiency is less than design value still needs to improve.
Utility model content
The purpose of this utility model is to provide a kind of semi-dry desulphurization control systems, are conducive to be directed to using separated penetrating
Property the respective technological parameter of adjusting medium, make the doses that system is put into lower, economy is more preferable；Process water atomizing effect
Good, reaction is fast, is evaporated rapidly in desulfurizing tower, can effectively improve the utilization rate of desulfurizing agent, and then improve desulfuration efficiency, simultaneously
High-effective dust-removing improves device operating load adjustability, realizes safety and economic operation.
The another object of the utility model is to provide a kind of semi-dry desulphurization dedusting work system, this work system can be with
Desulfurization, efficiency of dust collection are effectively improved, improves the operational efficiency of equipment, there is larger market popularization value.
The utility model is realized in this way：
A kind of semi-dry desulphurization control system, including：
Desulfurizing tower, for desulfurizing tower for carrying out flue gas desulfurization operation, the gas inlet of desulfurizing tower is provided with rotary atomization device；
Desulfurizing agent Storing and conveying device, desulfurizing agent Storing and conveying device are connect with desulfurizing tower, and desulfurizing agent Storing and conveying fills
Put the desulfurizing agent charging gear including being used to convey desulfurizing agent for desulfurizing tower and desulfurizing agent powder cabin for feeding desulfurizing agent；
Process water waterworks, process water waterworks are connected with rotary atomization device, and for conveying work for desulfurizing tower
Skill water；
Bag filter, bag filter are connected with the first outlet pipeline of desulfurizing tower；
Device is sent in compressed air storage, and compressed air storage is sent device to be connected by first pipe with rotary atomization device, passed through
Second pipe is connected with bag filter, and the atomizing medium for for rotary atomization device provides energy, while remove for cloth bag
Dirt provides compressed air.
Further, in the preferred embodiment of the utility model, semi-dry desulphurization control system, which further includes, is set to cloth
Return material transporting device below bag dust collector, return material transporting device have discharge gate and returning charge mouth, and returning charge mouth is connected by pipeline
To spraying device, discharge gate is used to discharge Desulphurization.
Further, in the preferred embodiment of the utility model, semi-dry desulphurization control system, which further includes, is set to cloth
The air-introduced machine of the clean gas outlet of bag dust collector, air-introduced machine are used to discharge purified flue gas.
Further, in the preferred embodiment of the utility model, semi-dry desulphurization control system further includes smoke backflow
Device, smoke reflux device include smoke backflow pipeline and are set to the neat stress return valve of smoke backflow pipeline, and flue gas returns
Flow tube road one end is connected with the second outlet pipeline of air-introduced machine, and the other end is connected with the inlet pipeline of desulfurizing tower.
Further, in the preferred embodiment of the utility model, semi-dry desulphurization control system further includes control system,
Control system includes data acquisition and procession device, SO2Concentration control unit and reflux valve control unit, VCU, SO2Concentration control is single
Member, reflux valve control unit, VCU, desulfurizing agent Storing and conveying device and neat stress return valve are electrically connected with data acquisition and procession device
It connects；
SO2Concentration control unit includes the first concentration monitors, the second concentration monitors and flue gas flow measuring instrument；
First concentration monitors are set to the inlet pipeline of desulfurizing tower, and for acquiring and monitoring the SO in flue gas2Concentration,
Second concentration monitors are set to the third outlet conduit of bag filter, and for acquiring and monitoring the SO in flue gas2Concentration,
Flue gas flow measuring instrument is set to the inlet pipeline of desulfurizing tower, and for acquiring flue gas flow data；
Data acquisition and procession device is configured as according to the first concentration monitors, the second concentration monitors and flue gas flow
The monitoring data of measuring instrument adjust the conveying capacity of desulfurizing agent Storing and conveying device；
And data acquisition and procession device is configured as adjusting neat stress return valve according to the monitor value of flue gas flow measuring instrument
Aperture.
Further, in the preferred embodiment of the utility model, control system further includes temperature control unit, temperature control
Unit processed, process water waterworks are electrically connected with data acquisition and procession device；
Temperature control unit includes the first flue-gas temperature sensor, the second flue-gas temperature sensor, and the first flue-gas temperature passes
Sensor is set to the inlet pipeline of desulfurizing tower, and inlet pipeline is connected with dirty flue, and the first flue-gas temperature sensor is used for
The temperature data signal of the flue gas before desulfurization is acquired, the second flue-gas temperature sensor is set to first outlet pipeline, and for adopting
Collect the temperature data signal after flue gas desulfurization；
Data acquisition and procession device be configured as according to the first flue-gas temperature sensor, the second flue-gas temperature sensor and
The confluent of the monitoring data control process water waterworks of flue gas flow measuring instrument, so as to adjust the reaction temperature in desulfurizing tower
Degree.
Further, in the preferred embodiment of the utility model, control system further includes antiseptic control unit, desulfurizing tower
Be provided with ash bucket heating unit, bag filter is provided with dedusting heating unit, antiseptic control unit and data acquisition and locates
The electrical connection of reason device, the second flue-gas temperature sensor, ash bucket heating unit and dedusting heating unit are electrically connected；
Data acquisition and procession device is configured as adjusting ash bucket heating dress according to the monitor value of the second flue-gas temperature sensor
It puts and the heating intensity of dedusting heating unit is so as to control the tower wall temperature of desulfurizing tower more than dew-point temperature, and then prevents from setting
Standby corrosion.
Further, in the preferred embodiment of the utility model, control system further includes pressure control unit, pressure control
Unit processed, return material transporting device are electrically connected with data acquisition and procession device；
Pressure control unit includes first pressure sensor, second pressure sensor, and first pressure sensor is set to de-
Before the inlet pipeline of sulphur tower, inlet pipeline are connected with dirty flue, and first pressure sensor is for acquiring flue gas desulfurization
Flue gas pressures data-signal, second pressure sensor are set to first outlet pipeline, and for acquiring the temperature after flue gas desulfurization
Data-signal；
Data acquisition and procession device is configured as the monitoring according to first pressure sensor and second pressure sensor instrument
Data control the conveying capacity of return material transporting device.
Further, in the preferred embodiment of the utility model, control system further includes alarm control unit, alarm control
Unit processed and pressure control unit, antiseptic control unit, temperature control unit, SO2Concentration control unit, reflux valve control unit, VCU
And data acquisition and procession device is electrically connected, and data acquisition and procession device is configured as pressure control unit, anti-corrosion control
Unit processed, temperature control unit, SO2The monitoring result of any one deviates default in concentration control unit, reflux valve control unit, VCU
It alarms during value.
A kind of semi-dry desulphurization dedusting work system includes semi-dry desulphurization control system and ash discharge collection system, ash discharge
Collection system is connected with semi-dry desulphurization control system, and the ash discharge for collecting bag filter.
The advantageous effect of said program：
The utility model provides a kind of semi-dry desulphurization control system and semi-dry desulphurization dedusting work system.It provides
Semi-dry desulphurization control system include desulfurizing tower, desulfurizing agent Storing and conveying device, process water waterworks, compressed air storage give
Device and bag filter.Using spray drying process desulfurization technology, stone is sprayed into heat smoke using the principle of spray drying
Ashes and process water, process water are atomized into after water droplet enters absorption tower, and a part of water droplet forms slurry drop after capturing absorbent granules,
The water evaporation rate of slurry drop declines, and the desulphurization reaction of incipient stage is ionic reaction in slurry drop, with the evaporation of moisture, desulfurization
Reaction is also gradually transitioned into gas-solid reaction by ionic reaction, does not form the water droplet of absorbent slurry drop, and the rapid evaporation in flue gas makes
Flue-gas temperature declines, and flue gas effective volume after cooling reduces, but also removing SO2And dedusting is more effective.Meanwhile desulfurizing agent with
Process water separately sprays into desulfurizing tower, does not interfere with each other.Before desulfurizing tower lime is made in process water and desulphurizer mixing by previous technique
Slurries, then slurries are sprayed into desulfurizing tower, but failure rate is higher in actual use for pulping system, and slurrying concentration is not
It easily adjusts, the easy scale effect atomizing effect of nozzle, so as to cause desulfurizing tower fouling, therefore preferably using the side separately sprayed into
Formula.It separately sprays into and is conducive to targetedly adjust respective technological parameter, make the doses that system is put into lower, economy is more preferable；
Process water atomizing effect is good, and reaction is fast, is evaporated rapidly in desulfurizing tower.Process water is atomized using compressed air, controls it by mist
The droplet of 30~50 μm or so of grain size is melted into, nozzle uses anti-wear material, improves system reliability.
Meanwhile using bag filter other than efficiently collecting Desulphurization, the complete desulfurizing agent of unreacted can be in cloth bag
Upper and smoke contacts continue to absorb the SO in flue gas2, improve desulphurization reaction efficiency.
The semi-dry desulphurization dedusting work system of offer, this work system can effectively improve desulfurization, efficiency of dust collection, carry
The operational efficiency of high equipment has larger market popularization value.
Description of the drawings
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the structure diagram of the first semi-dry desulphurization control system that the embodiment of the utility model provides；
Fig. 2 is second of semi-dry desulphurization control system architecture schematic diagram that the embodiment of the utility model provides；
Fig. 3 is the structure diagram of control system that the embodiment of the utility model provides；
Fig. 4 is the structure diagram of semi-dry desulphurization dedusting work system that the embodiment of the utility model provides.
Icon：100- semi-dry desulphurization control systems；200- semi-dry desulphurization dedusting work systems；101- desulfurizing towers；
103- gas inlets；105- desulfurizing agent Storing and conveying devices；107- desulfurizing agent charging gears；109- desulfurizing agent powder cabins；111- works
Skill water waterworks；Device is sent in the storage of 113- compressed airs；115- bag filters；117- first outlet pipelines；119- returning charges are defeated
Send device；121- discharge gates；123- returning charge mouths；125- clean gas outlets；127- air-introduced machines；129- smoke reflux devices；131-
Smoke backflow pipeline；133- neat stress return valves；135- inlet pipelines；137- control systems；139- data acquisition and processions
Device；141-SO2Concentration control unit；143- reflux valve control unit, VCUs；The first concentration monitors of 145-；The second concentration of 147- is supervised
Control device；149- flue gas flow measuring instruments；151- temperature control units；153- the first flue-gas temperature sensors；The second cigarettes of 155-
Gas temperature sensor；157- second outlet pipelines；159- third outlet conduits；161- antiseptic control units；163- ash buckets heat
Device；165- dedusting heating units；167- pressure control units；169- first pressure sensors；171- second pressure sensors；
173- alarm control units；The dirty flues of 177-；179- first pipes；181- second pipes；201- ash discharge collection systems.
Specific embodiment
Purpose, technical scheme and advantage to make the utility model embodiment are clearer, new below in conjunction with this practicality
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, instead of all the embodiments.Usually here described in attached drawing and
The component of the utility model embodiment shown can be configured to arrange and design with a variety of different.Therefore, below to attached
The detailed description of the embodiment of the utility model provided in figure is not intended to limit claimed the scope of the utility model,
But it is merely representative of the selected embodiment of the utility model.Based on the embodiment in the utility model, ordinary skill people
Member's all other embodiments obtained without creative efforts belong to the model of the utility model protection
It encloses.
It should be noted that：Similar label and letter represents similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need to that it is further defined and explained in subsequent attached drawing.
In the description of the utility model embodiment, it should be noted that term " " center ", " on ", " under ", " left side ",
The orientation or position relationship of the instructions such as " right side ", " vertical ", " level ", " interior ", " outer " are based on orientation shown in the drawings or position
Relationship or the utility model product using when the orientation usually put or position relationship, be for only for ease of and describe this reality
There must be specific orientation, with device that is simplifying description rather than instruction or hint meaning or element with specific with novel
Azimuth configuration and operation, therefore it is not intended that limitation to the utility model.In addition, term " first ", " second ", " third "
It is described etc. being only used for distinguishing, and it is not intended that instruction or hint relative importance.
In the description of the utility model embodiment, it is also necessary to which explanation is unless specifically defined or limited otherwise, art
Language " setting ", " installation ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or detachably
Connection is integrally connected；Can be mechanical connection or electrical connection；It can be directly connected, centre can also be passed through
Medium is indirectly connected, and can be the connection inside two elements.It for the ordinary skill in the art, can specific feelings
Condition understands concrete meaning of the above-mentioned term in the utility model.
In the utility model unless specifically defined or limited otherwise, fisrt feature is on or below second feature
It can be in direct contact including the first and second features, it is not to be in direct contact but pass through it that can also include the first and second features
Between other characterisation contact.Moreover, fisrt feature is on second feature, top and above include fisrt feature the
Right over two features and oblique upper is merely representative of fisrt feature level height higher than second feature.Fisrt feature is in the second spy
Under sign, lower section and fisrt feature included below immediately below second feature and obliquely downward or be merely representative of fisrt feature level
Highly it is less than second feature.
Refering to Fig. 1, present embodiments provide a kind of semi-dry desulphurization control system 100 and include desulfurizing tower 101, desulfurizing agent storage
Deposit conveying device 105, process water waterworks 111, compressed air storage send device 113 and bag filter 115.Desulfurizing agent stores up
Deposit conveying device 105, process water waterworks 111, compressed air storage send device 113 and bag filter 115 and desulfurization
Tower 101 is connected.
In the present embodiment, referring to Fig. 1, desulfurizing tower 101 is used to carry out flue gas desulfurization operation, desulfurizing tower 101
Gas inlet 103 is provided with rotary atomization device (figure is to show).Desulfurizing tower 101 includes ash dropping hopper and reaction tower.Desulfurizing tower 101
Bottom is provided with ash discharging hole.101 bottom of desulfurizing tower is equipped with arch breaking apparatus, prevents reaction product from bonding.Certainly, it is new in this practicality
In the other embodiment of type, desulfurizing tower 101 further includes other component well known to other skilled in the art, and the utility model is not
It repeats again.
Wherein, the bottom on absorption tower is Venturi, is accelerated when flue gas flows through.Absorbent and circulation desulfurization ash are through meter
Amount device is respectively fed to absorption tower.Smoke-shock rear overhang after absorbent and circulation desulfurization ash are accelerated floats, and forms fluidisation
Bed, is sufficiently mixed with flue gas and completes desulphurization reaction.Flue gas is in fierce turbulence state with absorbent in absorption tower, ciculation fluidized
Ca/S molar ratios in bed can reach 50 or so.There are larger sliding velocity, absorbents between absorbent granules and flue gas
Continuous friction, collision between particle increase the reaction interface of desulphurization reaction, enhance the mass-and heat-transfer of desulphurization reaction.
In the present embodiment, referring to Fig. 1, desulfurizing agent Storing and conveying device 105 is connect with desulfurizing tower 101, and de-
Sulphur agent Storing and conveying device 105 includes being used to convey the desulfurizing agent charging gear 107 of desulfurizing agent for desulfurizing tower 101 and being used for
Feed the desulfurizing agent powder cabin 109 of desulfurizing agent.Desulfurizing agent charging gear 107 is connect with desulfurizing agent powder cabin 109, desulfurizing agent Storing and conveying
Device uses the preferably star-like charging gear of leakproofness, and using frequency control.Certainly, in other implementations of the utility model
In example, the model of desulfurizing agent Storing and conveying device can also be selected according to demand, and the utility model does not limit.
In the present embodiment, referring to Fig. 1, process water waterworks 111 are connected with rotary atomization device, and are used for
Process water is conveyed for desulfurizing tower 101.The water of process water is controlled using the aperture of valve.Spraying device and technique water tank and
Compressed air cylinder connects, and spraying device is atomized using compressed air, for process water to be made droplet.Nozzle be with outside reaction tower
Wall connection, it is conveniently replaceable.Desulfurizing agent separately sprays into desulfurizing tower 101 with process water, does not interfere with each other.Previous technique is in desulfurizing tower
Lime slurry is made, then slurries are sprayed into desulfurizing tower 101 in process water and desulphurizer mixing before 101, but pulping system is in reality
Failure rate is higher during the use of border, and slurrying concentration is not easy to adjust, the easy scale effect atomizing effect of nozzle, so as to cause
101 fouling of desulfurizing tower, therefore preferably by the way of separately spraying into.It separately sprays into and is conducive to targetedly adjust respective technique
Parameter makes the doses that system is put into lower, and economy is more preferable；Process water atomizing effect is good, and reaction is fast, fast in desulfurizing tower 101
Speed evaporation.Process water is atomized using compressed air, it is controlled to be atomized into the droplet of 30~50 μm or so of grain size, nozzle is using anti-
Material is worn, improves system reliability.
In the present embodiment, referring to Fig. 1, the first outlet pipeline 117 of bag filter 115 and desulfurizing tower 101
It is connected.Bag filter 115 is a kind of dry type dust filtration device.It is suitable for trapping tiny, dry, non-fiber dust.Filter bag
Using weaving filter cloth or nonwoven felt into, dusty gas is filtered using the filtration of fabric, when containing
After dust and gas body enters sack cleaner, particle is big, heavy dust, since the effect of gravity settles down, falls into ash bucket, contains
There is the gas of relatively fine dust when passing through filtrate, dust is purified gas by detention.With bag filter 115 in addition to
It efficiently collects outside Desulphurization, the complete desulfurizing agent of unreacted can continue to absorb in flue gas on cloth bag with smoke contacts
SO2, desulphurization reaction efficiency is improved, until being blown off by blowback compressed air.In addition, the Desulphurization that deduster is collected, a part of quilt
Material returning device is sent desulfurizing tower 101 back to and is continued and smoke reaction, improves reaction efficiency.
In the present embodiment, referring to Fig. 1, compressed air storage send device 113 to pass through first pipe 179 and rotation spray
Mist device is connected, and is connected by second pipe 181 with bag filter 115, and for the atomizing medium for rotary atomization device
Energy is provided, while compressed air is provided for bag-type dust.
As a preferred option, referring to Fig. 1, semi-dry desulphurization control system 100, which further includes, to be set to cloth bag and removes
The return material transporting device 119 of 115 lower section of dirt device, return material transporting device 119 have discharge gate 121 and returning charge mouth 123, returning charge mouth
123 are connected to spraying device by pipeline, and discharge gate 121 is used to discharge Desulphurization.
It is further preferred that semi-dry desulphurization control system 100 further includes and is set to the purified gas of bag filter 115 and goes out
The air-introduced machine 127 of mouth 125, air-introduced machine 127 are used to discharge purified flue gas.
It is further preferred that semi-dry desulphurization control system 100 further includes smoke reflux device 129, smoke reflux device
129 include smoke backflow pipeline 131 and are set to the neat stress return valve 133 of smoke backflow pipeline 131, smoke backflow pipeline
131 one end are connected with the second outlet pipeline 157 of air-introduced machine 127, and the other end is connected with the inlet pipeline 135 of desulfurizing tower 101.
Refering to Fig. 2 and Fig. 3, while in order to realize that desulphurization reaction automatically controls to reach, realize and improve desulphurization reaction effect
Rate improves device operating load adjustability, realizes safety and economic operation.In the present embodiment, semi-dry desulphurization control system 100
Control system 137 is further included, control system 137 includes data acquisition and procession device 139, SO2Concentration control unit 141 and return
Flow valve control unit, VCU 143, SO2Concentration control unit 141, reflux valve control unit, VCU 143, desulfurizing agent Storing and conveying device 105 with
And neat stress return valve 133 is electrically connected with data acquisition and procession device 139；SO2 concentration control units 141 include the first concentration
Monitor 145, the second concentration monitors 147 and flue gas flow measuring instrument 149；First concentration monitors 145 are set to desulfurization
The inlet pipeline 135 of tower 101, and for acquiring and monitoring the SO in flue gas2Concentration, the second concentration monitors 147 are set to cloth
The third outlet conduit 159 of bag dust collector 115, and for acquiring and monitoring the SO in flue gas2Concentration, flue gas flow measuring instrument
149 are set to the inlet pipeline 135 of desulfurizing tower 101, and for acquiring flue gas flow data；139 quilt of data acquisition and procession device
It is configured to the monitoring data according to the first concentration monitors 145, the second concentration monitors 147 and flue gas flow measuring instrument 149
Adjust the conveying capacity of desulfurizing agent Storing and conveying device.It is detected when the first concentration monitors 145 and the second concentration monitors 147
SO2When concentration is higher, while when the flue gas flow that is detected of flue gas flow measuring instrument 149 is excessive, it can be stored by desulfurizing agent
Conveying device increases conveying capacity, and the state so that detection data restores balance then improves the degree of automation of system.
Similarly, data acquisition and procession device 139 is configured as being adjusted according to the monitor value of flue gas flow measuring instrument 149
The aperture of neat stress return valve 133.Illustrate dirty flue gas when the flue gas flow that flue gas flow measuring instrument 149 is detected is excessive
It measures more, can increase clean flue gas by adjusting the aperture of neat stress return valve 133 at this time and be passed through, ensure that flue gas is born in tower
Lotus is at full capacity.It means that using neat stress reflow method, flue gas fluctuation influence caused by desulphurization plant is reduced.
Pipeline is set before chimney and is connected to reaction tower import, valve is installed on pipeline, during reaction tower oepration at full load, closes valve；It is low negative
When lotus runs, valve is opened, reaction tower is entered after cleaning flue gases are mixed with pending flue gas.Valve opening changes with exhaust gas volumn
And change, ensure that flue gas load is at full capacity, makes desulphurization system maintain efficient, safe load setting always in tower in this way.
As a preferred option, control system 137 further includes temperature control unit 151, temperature control unit 151, technique
Water waterworks 111 are electrically connected with data acquisition and procession device 139；Temperature control unit 151 is passed including the first flue-gas temperature
Sensor 153, the second flue-gas temperature sensor 155, the first flue-gas temperature sensor 153 are set to the inlet pipeline of desulfurizing tower 101
135, inlet pipeline 135 is connected with dirty flue 177, and the first flue-gas temperature sensor 153 is used to acquire the cigarette before desulfurization
The temperature data signal of gas, the second flue-gas temperature sensor 155 is set to first outlet pipeline 117, and is taken off for acquiring flue gas
Temperature data signal after sulphur；Data acquisition and procession device 139 is configured as according to the first flue-gas temperature sensor 153, second
The confluent of the monitoring data of flue-gas temperature sensor 155 and flue gas flow measuring instrument control process water waterworks 111, from
And adjust the reaction temperature in desulfurizing tower 101.It means that when the first flue-gas temperature sensor 153, the second flue-gas temperature pass
Sensor 155 detect flue gas temperature it is higher when, and flue gas flow measuring instrument monitoring flue gas flow it is larger when, work can be passed through
Skill water waterworks 111 increase water supply, and so as to balance the reaction temperature in desulfurizing tower 101, it is automatic to further improve operation
Change degree and efficiency.
It is further preferred that control system 137 further includes antiseptic control unit 161, desulfurizing tower 101 is provided with ash bucket
Heating unit 163, bag filter 115 are provided with dedusting heating unit 165, antiseptic control unit 161 and data acquisition and place
Device 139 is electrically connected reason, the second flue-gas temperature sensor 155, ash bucket heating unit 163 and dedusting heating unit 165 are electrically connected
It connects；Data acquisition and procession device 139 is configured as adjusting ash bucket heating according to the monitor value of the second flue-gas temperature sensor 155
The heating intensity of device 163 and dedusting heating unit 165 so as to control the tower wall temperature of desulfurizing tower 101 dew-point temperature with
On, and then prevent equipment from corroding.It means that when the second flue-gas temperature is relatively low, can be increased by adjusting heating unit
The efficiency of heating surface, so as to assist improve flue-gas temperature, so as to control the tower wall temperature of desulfurizing tower 101 and ash bucket dew-point temperature with
On, and then prevent equipment from corroding.
It is further preferred that control system 137 further includes pressure control unit 167, pressure control unit 167, returning charge are defeated
Device 119 is sent to be electrically connected with data acquisition and procession device 139；Pressure control unit 167 include first pressure sensor 169,
Second pressure sensor 171, first pressure sensor 169 are set to the inlet pipeline 135 of desulfurizing tower 101, inlet pipeline 135
It is connected with dirty flue 177, and first pressure sensor 169 is used to acquire the flue gas pressures data-signal before flue gas desulfurization,
Second pressure sensor 171 is set to first outlet pipeline 117, and for acquiring the temperature data signal after flue gas desulfurization；Number
The monitoring number according to 171 instrument of first pressure sensor 169 and second pressure sensor is configured as according to acquisition and processor 139
According to the conveying capacity of control return material transporting device 119.When first pressure sensor 169 and the monitoring number of second pressure sensor 171
According to difference it is higher when, it is possible to reduce return material transporting device 119 conveying capacity balance pressure, prevent the fluid bed of desulfurizing tower 101 from collapsing
Bed.By contrast, desulfuration efficiency can be reduced when pressure difference is too low, 119 conveying capacity of return material transporting device should be increased at this time, make pressure difference
Maintain the efficient operating regime of 1000~1200Pa.
Also, control system 137 further includes alarm control unit 173, alarm control unit 173 and pressure control unit
167th, antiseptic control unit 161, temperature control unit 151, SO2 concentration control units 141, reflux valve control unit, VCU 143 and
Data acquisition and procession device 139 is electrically connected, and data acquisition and procession device 139 be configured as pressure control unit 167,
Any one in antiseptic control unit 161, temperature control unit 151, SO2 concentration control units 141, reflux valve control unit, VCU 143
Monitoring result deviate preset value when alarm.When the detected value of any of the above-described person deviates safety value, warning device
Alarm designs, further increases the safety of equipment in this way.
Refering to Fig. 4, the embodiment of the utility model additionally provides a kind of semi-dry desulphurization dedusting work system 200 and includes half
Dry desulfurization control system 100 and ash discharge collection system 201, ash discharge collection system 201 and semi-dry desulphurization control system 100
It is connected, and the ash discharge for collecting bag filter 115.
Semi-dry desulphurization control system 100 provided by the utility model and semi-dry desulphurization dedusting work system 200
Working principle and beneficial effect is：
The semi-dry desulphurization control system 100 of offer includes desulfurizing tower 101, desulfurizing agent Storing and conveying device 105, process water
Device 113 and bag filter 115 are sent in waterworks 111, compressed air storage.Using spray drying process desulfurization technology, utilize
The principle of spray drying sprays into pulverized limestone and process water into heat smoke, and process water is atomized into after water droplet enters absorption tower, one
Slurry drop is formed after dividing water droplet capture absorbent granules, starches the water evaporation rate decline of drop, the desulfurization for starching the incipient stage in drop is anti-
Ionic reaction is should be, with the evaporation of moisture, desulphurization reaction is also gradually transitioned into gas-solid reaction by ionic reaction, does not form absorption
The water droplet of agent slurry drop, the rapid evaporation in flue gas decline flue-gas temperature, and flue gas effective volume after cooling reduces, but also
Remove SO2And dedusting is more effective.
Reaction step is as follows：
(1)SO2It is absorbed by dropping liquid：
SO2(gas)+H2O→H2SO3(liquid)；
(2) SO2 absorbed is the same as the absorbent reaction of dissolving：
Ca(OH)2(liquid)+H2SO3(liquid) → CaSO3(liquid)+2H2O；
(3) CaSO3 in drop crystallizes precipitation after reaching saturation：
CaSO3(liquid) → CaSO3(Gu)；
(4) CaSO in part solution3It is reacted with the oxygen in solution, is oxidized to calcium sulfate：
CaSO3(liquid)+1/2O2→CaSO4(liquid)；
(5)CaSO4Solubility is low, and crystallization is precipitated：
CaSO4(liquid) → CaSO4(Gu).
The Ca (OH) dissolved in sweetening process2Constantly consumption, while Ca (OH)2Constantly dissolving supplements to maintain solid again
Desulphurization reaction continues.Droplet is formed dry solid powder after flue gas drying, partly discharge desulfurizing tower with flue gas
101, it is collected with sack cleaner, part, which is fallen after rise to 101 bottom of desulfurizing tower, continues to participate in reaction, and heavier ash falls into desulfurizing tower
It is discharged in 101 ash bucket.It is sent to chimney and arranged to air from air-introduced machine 127 by 115 purified flue gas of bag filter.When
When the exhaust gas volumn of system is less than normal work flow, neat stress return valve 133 opens part, and part neat stress is introduced desulfurizing tower
101 import flues make system flue gas flow be in the load range of flow of efficient operation.
Meanwhile desulfurizing agent separately sprays into desulfurizing tower 101 with process water, does not interfere with each other.Previous technique will before desulfurizing tower 101
Lime slurry is made in process water and desulphurizer mixing, then slurries are sprayed into desulfurizing tower 101, but pulping system was actually using
Failure rate is higher in journey, and slurrying concentration is not easy to adjust, the easy scale effect atomizing effect of nozzle, so as to cause desulfurizing tower
101 foulings and reduction desulfuration efficiency, therefore preferably by the way of separately spraying into.It separately sprays into and is conducive to targetedly adjust
Respective technological parameter makes the doses that system is put into lower, and economy is more preferable；Process water atomizing effect is good, and reaction is fast, in desulfurization
It is evaporated rapidly in tower 101.Process water is atomized using compressed air, it is controlled to be atomized into the droplet of 30~50 μm or so of grain size,
Nozzle uses anti-wear material, improves system reliability.
Also, using bag filter 115 other than efficiently collecting Desulphurization, the complete desulfurizing agent of unreacted can be in cloth
On bag and smoke contacts, continue to absorb the SO in flue gas2, improve desulphurization reaction efficiency.
The semi-dry desulphurization dedusting work system 200 of offer, this work system can effectively improve desulfurization, dedusting effect
Rate improves the operational efficiency of equipment, has larger market popularization value.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of semi-dry desulphurization control system, which is characterized in that including：
Desulfurizing tower, for the desulfurizing tower for carrying out flue gas desulfurization operation, the gas inlet of the desulfurizing tower is provided with rotating spraying
Device；
Desulfurizing agent Storing and conveying device, the desulfurizing agent Storing and conveying device are connect with the desulfurizing tower, and the desulfurizing agent stores up
Conveying device is deposited to include being used to convey the desulfurizing agent charging gear of desulfurizing agent and for the desulfurizing tower for feeding the desulfurization
The desulfurizing agent powder cabin of agent；
Process water waterworks, the process water waterworks are connected with the rotary atomization device, and are used for as the desulfurization
Tower conveys process water；
Bag filter, the bag filter are connected with the first outlet pipeline of the desulfurizing tower；
Device is sent in compressed air storage, and the compressed air storage send device to be connected by first pipe with the rotary atomization device,
It is connected by second pipe with the bag filter, and the atomizing medium for for the rotary atomization device provides energy,
Simultaneously compressed air is provided for bag-type dust.
2. semi-dry desulphurization control system according to claim 1, which is characterized in that the semi-dry desulphurization control system
The return material transporting device being set to below the bag filter is further included, the return material transporting device has discharge gate and returning charge
Mouthful, the returning charge mouth is connected to the spraying device by pipeline, and the discharge gate is used to discharge Desulphurization.
3. semi-dry desulphurization control system according to claim 2, which is characterized in that the semi-dry desulphurization control system
The air-introduced machine for the clean gas outlet for being set to the bag filter is further included, the air-introduced machine is used to arrange purified flue gas
Go out.
4. semi-dry desulphurization control system according to claim 3, which is characterized in that the semi-dry desulphurization control system
Smoke reflux device is further included, the smoke reflux device includes smoke backflow pipeline and is set to the smoke backflow pipeline
Neat stress return valve, described smoke backflow pipeline one end is connected with the second outlet pipeline of the air-introduced machine, the other end and institute
The inlet pipeline for stating desulfurizing tower is connected.
5. semi-dry desulphurization control system according to claim 4, which is characterized in that the semi-dry desulphurization control system
Control system is further included, the control system includes data acquisition and procession device, SO2Concentration control unit and return valve control
Unit, the SO2Concentration control unit, the reflux valve control unit, VCU, the desulfurizing agent Storing and conveying device and described net
Smoke backflow valve is electrically connected with the data acquisition and procession device；
The SO2Concentration control unit includes the first concentration monitors, the second concentration monitors and flue gas flow measuring instrument；
First concentration monitors are set to the inlet pipeline of the desulfurizing tower, and for acquiring and monitoring in flue gas
SO2Concentration, second concentration monitors are set to the third outlet conduit of the bag filter, and for acquiring and monitoring
SO in flue gas2Concentration, the flue gas flow measuring instrument are set to the inlet pipeline of the desulfurizing tower, and for acquiring cigarette
Throughput data；
The data acquisition and procession device be configured as according to first concentration monitors, second concentration monitors and
The monitoring data of the flue gas flow measuring instrument adjust the conveying capacity of the desulfurizing agent Storing and conveying device；
And the data acquisition and procession device is configured as adjusting the net cigarette according to the monitor value of the flue gas flow measuring instrument
The aperture of gas return valve.
6. semi-dry desulphurization control system according to claim 5, which is characterized in that the control system further includes temperature
Control unit, the temperature control unit, the process water waterworks are electrically connected with the data acquisition and procession device；
The temperature control unit includes the first flue-gas temperature sensor, the second flue-gas temperature sensor, the first flue gas temperature
Degree sensor is set to the inlet pipeline of the desulfurizing tower, and the inlet pipeline is connected with dirty flue, and described the
For acquiring the temperature data signal of the flue gas before desulfurization, the second flue-gas temperature sensor is set one flue-gas temperature sensor
In the first outlet pipeline, and for acquiring the temperature data signal after flue gas desulfurization；
The data acquisition and procession device is configured as according to the first flue-gas temperature sensor, second flue-gas temperature biography
The monitoring data of sensor and the flue gas flow measuring instrument control the confluent of the process water waterworks, so as to adjust
State the reaction temperature in desulfurizing tower.
7. semi-dry desulphurization control system according to claim 6, which is characterized in that the control system further includes anti-corrosion
Control unit, the desulfurizing tower are provided with ash bucket heating unit, and the bag filter is provided with dedusting heating unit, described
Antiseptic control unit is electrically connected with the data acquisition and procession device, the heating of the second flue-gas temperature sensor, the ash bucket
Device and the dedusting heating unit are electrically connected；
The data acquisition and procession device is configured as adjusting the ash according to the monitor value of the second flue-gas temperature sensor
The heating intensity of bucket heating unit and the dedusting heating unit is so as to control the tower wall temperature of the desulfurizing tower in dew point temperature
More than degree, and then prevent equipment from corroding.
8. semi-dry desulphurization control system according to claim 7, which is characterized in that the control system further includes pressure
Control unit, the pressure control unit, the return material transporting device are electrically connected with the data acquisition and procession device；
The pressure control unit includes first pressure sensor, second pressure sensor, the first pressure sensor setting
In the inlet pipeline of the desulfurizing tower, the inlet pipeline is connected with the dirty flue, and the first pressure passes
For sensor for acquiring the flue gas pressures data-signal before flue gas desulfurization, the second pressure sensor is set to the first outlet
Pipeline, and for acquiring the temperature data signal after flue gas desulfurization；
The data acquisition and procession device is configured as according to the first pressure sensor and the second pressure sensor
Monitoring data control the conveying capacity of the return material transporting device.
9. semi-dry desulphurization control system according to claim 8, which is characterized in that the control system further includes alarm
Control unit, the alarm control unit and the pressure control unit, the antiseptic control unit, temperature control are single
First, described SO2Concentration control unit, the reflux valve control unit, VCU and the data acquisition and procession device are electrically connected, and
The data acquisition and procession device is configured as the pressure control unit, the antiseptic control unit, temperature control
Unit, the SO2It is carried out when the monitoring result of any one deviates preset value in concentration control unit, the reflux valve control unit, VCU
Alarm.
10. a kind of semi-dry desulphurization dedusting work system, which is characterized in that the semi-dry desulphurization dedusting work system includes power
Profit requires the semi-dry desulphurization control system and ash discharge collection system described in any one of 1 to 9, the ash discharge collection system with
The semi-dry desulphurization control system is connected, and the ash discharge for collecting the bag filter.
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| CN110090535A (en) * | 2019-04-03 | 2019-08-06 | 红云红河烟草(集团)有限责任公司 | A kind of desulfurizing agent automatic feeding system |
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| CN110756039A (en) * | 2019-11-29 | 2020-02-07 | 苏州仕净环保科技股份有限公司 | Flue gas desulfurization system with flue gas monitoring and regulating functions |
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| CN112675691A (en) * | 2020-12-15 | 2021-04-20 | 中冶京诚工程技术有限公司 | Flue gas semi-dry desulfurization system and desulfurization method |
| CN112675691B (en) * | 2020-12-15 | 2024-04-26 | 中冶京诚工程技术有限公司 | Flue gas semi-dry desulfurization system and desulfurization method |
| CN116173718A (en) * | 2023-04-27 | 2023-05-30 | 淄博宏科环保科技有限公司 | Calcium-based dry desulfurization equipment and application method thereof |
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