CN208302515U - A kind of desulfurization and denitrification integral system - Google Patents
A kind of desulfurization and denitrification integral system Download PDFInfo
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- CN208302515U CN208302515U CN201820666103.5U CN201820666103U CN208302515U CN 208302515 U CN208302515 U CN 208302515U CN 201820666103 U CN201820666103 U CN 201820666103U CN 208302515 U CN208302515 U CN 208302515U
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Abstract
The utility model discloses a kind of desulfurization and denitrification integral systems, system includes absorption tower and deduster, smoke inlet positioned at the bottom on the absorption tower is connected to a flue collector, exhanst gas outlet positioned at the top on the absorption tower is connected to the deduster, flue collector is connected to denitration oxidant adder, absorption tower is connected to an absorbent adder, and venturi conduit is additionally provided in absorption tower, and the bottom on absorption tower is connected to the bottom of the deduster by Matter Transfer slot；The smoke inlet and smoke outlet on absorption tower are respectively equipped with pressure detecting instrument, and Matter Transfer slot is equipped with Matter Transfer regulating valve, and pressure detecting instrument is electrically connected with Matter Transfer regulating valve by a controller.The desulfurization and denitrification integral system of the utility model not only can be realized simultaneously the desulphurization denitration of flue gas, can also establish the bed in absorption tower automatically, and make the bed in absorption tower keep stablizing by automatically adjusting.
Description
Technical field
The utility model relates to flue gases purification field, espespecially a kind of desulfurization and denitrification integral system.
Background technique
Currently, circulating fluidized bed dry technique has application in the smoke gas treatments such as electric power, sintering machine field.Ciculation fluidized
During bed semi-drying method flue gas desulfurization denitrating technique requires, it is necessary to suitable bed pressure drop is kept, in circulating fluid bed semi-drying method flue gas
Building during bed operating and in the operational process for maintaining bed stable for desulphurization denitration, it is careless slightly, it can all cause bed material
Fluctuation, and then cause the possibility of bed of collapsing.And existing ciculation fluidized system generally requires manual operation to carry out absorption tower
It builds bed and bed is maintained to stablize, process is complicated, cumbersome, fume treatment low efficiency.
Therefore, the application is dedicated to providing a kind of novel desulfurization and denitrification integral system.
Utility model content
The purpose of the utility model is to provide a kind of desulfurization and denitrification integral system, integral system not only can be real simultaneously
The desulphurization denitration of existing flue gas can also establish the bed in absorption tower automatically, and the automatic bed maintained in absorption tower is stablized
Property, to effectively promote the treatment effeciency of flue gas.
The technical scheme that the utility model is provided is as follows:
A kind of desulfurization and denitrification integral system, comprising: absorption tower and deduster, the flue gas positioned at the bottom on the absorption tower
Entrance is connected to a flue collector, and the flue collector conveys flue gas to be processed into the absorption tower, positioned at the absorption tower
The exhanst gas outlet at top is connected to the deduster, and the flue collector is equipped with a denitration oxidant adding mouth, the denitration oxygen
Agent adding mouth is connected to a denitration oxidant adder, and the denitration oxidant adder into the flue collector for spraying into
Denitration oxidant, the bottom on the absorption tower are additionally provided with absorbent adding mouth, and the absorbent adding mouth is located at the suction with one
The absorbent adder connection of the outside of tower is received, the absorbent adder, which is used to spray into alkalinity into the absorption tower, to be absorbed
Agent is additionally provided with venturi conduit in the absorption tower, and the entrance of the venturi conduit is located at the upper of the absorbent adding mouth
Side；The bottom on the absorption tower is connected to the bottom of the deduster by Matter Transfer slot, and the Matter Transfer slot and institute
State absorption tower communication port be located at the venturi conduit entrance lower section；The smoke inlet and exhanst gas outlet on the absorption tower
Place is respectively equipped with pressure detecting instrument, and the Matter Transfer slot is equipped with Matter Transfer regulating valve, the pressure detecting instrument with it is described
Matter Transfer regulating valve is electrically connected by a controller.
Preferably, the desulfurization and denitrification integral system further includes timer and alarm, the timer and the object
Expect that circulating regulation valve is electrically connected by controller, the alarm is electrically connected with the timer by controller.
Preferably, the smoke outlet on the absorption tower is equipped with temperature sensor, is equipped with a high pressure spray in the absorption tower
Rifle, the high-pressure spray gun are located at the top of the venturi conduit, and the high-pressure spray gun and one are located at the outside on the absorption tower
Water tank connection, connecting pipe between the high-pressure spray gun and the water tank is equipped with a return water regulating valve, the return water tune
Section valve is electrically connected with the temperature sensor by controller.
Preferably, NO is arranged on the flue collector and/or exit of the dedusterxDetector and SO2Detector, institute
State NOxDetector is for detecting NO in flue gasxContent, the SO2Detector is for detecting SO in flue gas2Content, the NOx
Detector and SO2Detector passes through controller respectively and is electrically connected with the absorbent adder.
Preferably, the flue collector is equipped with a pair of NOxDetector, and a pair of NOxDetector is located at described de-
The two sides of nitre oxidant adding mouth, a pair of NOxDetector is respectively used in the flue gas before and after denitration oxidant is added in detection
NO content, a pair of NOxDetector passes through controller respectively and is electrically connected with the denitration oxidant adder.
Preferably, the flue collector is connected to a circulated air flue, and the circulated air flue passes through the flue collector to institute
It states and supplements circulated air in absorption tower, the flue collector is equipped with a flue gas flow detector, and the flue gas flow detector is used for
The flue gas flow at the smoke inlet on the absorption tower is detected, the connecting pipe of the flue collector and circulated air flue is equipped with one
Circulated air controllable register door, the circulated air controllable register door are electrically connected with the flue gas flow detector by controller.
A kind of desulfurization and denitrification integral system provided by the utility model can be completed at the same time the desulphurization denitration processing of flue gas,
And at the same time establishing the bed in absorption tower automatically, and the stabilization of bed in absorption tower is maintained automatically.
Detailed description of the invention
Below by clearly understandable mode, preferred embodiment is described with reference to the drawings, to the above-mentioned spy of the utility model
Property, technical characteristic, advantage and its implementation are further described.
Fig. 1 is a kind of structural schematic diagram of specific embodiment of the desulfurization and denitrification integral system of the utility model.
Drawing reference numeral explanation:
Absorption tower 1, deduster 2, flue collector 3, denitration oxidant adder 4, absorbent adder 5, venturi conduit 6,
Controller 7, Matter Transfer slot 8, Matter Transfer regulating valve 9, pressure detecting instrument 10,11, temperature sensor 12, high-pressure spray gun 13,
Water tank 14, return water regulating valve 15, NOxDetector 16,18,20, inlet SO2Detector 17,19, flue gas flow detector 21 follow
Ring wind controllable register door 22.
Specific embodiment
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, attached drawing will be compareed below
Illustrate specific embodiment of the present utility model.It should be evident that the accompanying drawings in the following description is only the one of the utility model
A little embodiments for those of ordinary skill in the art without creative efforts, can also be according to these
Attached drawing obtains other attached drawings, and obtains other embodiments.To make simplified form, only schematically showing in each figure
Part relevant to the utility model, they do not represent its practical structures as product.
Specific embodiment one
As shown in Figure 1, this specific embodiment discloses a kind of more preferred embodiment of desulfurization and denitrification integral system,
It includes absorption tower 1 and deduster 2, and the smoke inlet positioned at the bottom on absorption tower 1 is connected to a flue collector 3, and flue collector 3 is to suction
It receives in tower 1 and conveys flue gas to be processed, the exhanst gas outlet positioned at the top on absorption tower 1 is connected to deduster 2, is set on flue collector 3
There is a denitration oxidant adding mouth, denitration oxidant adding mouth is connected to a denitration oxidant adder 4, the addition of denitration oxidant
Device 4 is used to spray into denitration oxidant into flue collector 3, and the bottom on absorption tower 1 is additionally provided with absorbent adding mouth, absorbent adding mouth
The absorbent adder 5 for the outside for being located at absorption tower 1 with one is connected to, and absorbent adder 5 is used to spray into alkalinity into absorption tower 1
Absorbent.Venturi conduit 6 is additionally provided in absorption tower 1, the entrance of venturi conduit 6 is located at the top of absorbent adding mouth.
The bottom on absorption tower 1 is connected to the bottom of deduster 2 by Matter Transfer slot 8, and Matter Transfer slot 8 and absorption tower
1 communication port is located at the lower section of the entrance of venturi conduit 6；The smoke inlet and smoke outlet on absorption tower 1 are respectively equipped with pressure
Tension gauge 10,11, Matter Transfer slot 8 are equipped with Matter Transfer regulating valve 9, and pressure detecting instrument and Matter Transfer regulating valve 9 are logical
Cross a controller 7 electrical connection.
In this desulfurization and denitrification integral system, pass through flue collector 3 from absorption tower 1 with the flue gas after denitration oxidant reaction
Bottom enter absorption tower 1, in the bottom on absorption tower 1, the alkaline absorbent of flue gas and addition and returned by Matter Transfer slot 8
The circulating ash on absorption tower 1 mixes, and mixed flue gas accelerates by Venturi tube 6, and in Venturi tube 6, high-speed flow can be incited somebody to action
Circulating ash, absorbent and flue gas are sufficiently mixed uniformly and sufficiently react, and then carry out cooling processing to flue gas by high-pressure spray gun,
Flue gas after cooling is discharged at the top of absorption tower 1, and enters deduster 2, and the clean flue gas after dust removal process passes through again to be drawn
Blower enters smoke stack emission, the solid particle trapped through deduster 2, and the part ash particle that deduster 2 is collected into passes through object
Material circulating slot 8, which returns to continue to participate in flue gas in absorption tower 1, to react, and part lime-ash is then delivered to grey library by storehouse pump and transports outward.?
During this, the smoke inlet on absorption tower 1 and the pressure detecting instrument 10,11 of smoke outlet detect the disengaging on absorption tower 1 respectively
Flue gas flow at mouthful, and being absorbed the pressure drop of tower 1 according to the flue gas flow of import and export, controller 7 according to the pressure drop come
The Matter Transfer regulating valve 9 on material circulating slot 8 is adjusted, so that the bed in absorption tower 1 be made to be kept stable in a certain range.
In the present embodiment, desulfurization and denitrification integral system further includes timer (not shown) and alarm (in figure
It is not shown), timer is electrically connected with Matter Transfer regulating valve by controller, and alarm and timer are electrically connected by controller
It connects, after Matter Transfer regulating valve is opened, timer starts timing until material adjustable valve is closed, if the timing time of timer is super
Preset time out, then controlled by controller and open alarm, and alarm issues alarm signal.
Specifically, the smoke outlet on absorption tower 1 is equipped with temperature sensor 12, it is equipped with a high-pressure spray gun 13 in absorption tower 1,
High-pressure spray gun 13 is located at the top of venturi conduit 6, and the water tank 14 for the outside that high-pressure spray gun 13 is located at absorption tower 1 with one is connected to,
Connecting pipe between high-pressure spray gun 13 and water tank 14 is equipped with a return water regulating valve 15, return water regulating valve 15 and temperature sensor
12 are electrically connected by controller 7, the water spray for the flue-gas temperature control high-pressure spray gun that controller 7 is detected according to temperature sensor 12
Amount, if flue-gas temperature is higher, can increase amount of water sprayed, if flue-gas temperature is lower, can reduce amount of water sprayed.Setting can in this way
So that the bed in absorption tower further keeps stable.
Specifically, flue collector 3 is equipped with NOxDetector 16 and SO2NO is arranged in the exit of detector 17, deduster 2xInspection
Survey instrument 18 and SO2Detector 19, NOxDetector 16,18 is used to NO in detection flue gasxContent, SO2Detector 17,19 is used
The SO in detection flue gas2Content, NOx16,18 and SO of detector2Detector 17,19 passes through control with absorbent adder 5 respectively
Device electrical connection processed, works as NOx16,18 and SO of detector2Detector 17,19 detects NO in flue gasxContent or SO2Content exceeds it
When corresponding preset value, then the additional amount that absorbent adder 5 increases alkaline absorbent is adjusted by controller, if being less than default
Value, then reduce the additional amount of alkaline absorbent.Setting can make the bed in absorption tower further keep stable in this way.
Specifically, being additionally provided with NO on the flue collector 3xDetector 20, NOxDetector 16,20 is located at denitration oxidant
The two sides of adding mouth, NOxDetector 20,16 is respectively used to the NO content in the flue gas before and after denitration oxidant is added in detection, and
NOxDetector 16,20 is electrically connected by controller with denitration oxidant adder 4 respectively.It should be noted that being located at denitration oxygen
The NO at agent adding mouth rearxDetector 16 can detect the NO at the smoke inlet on absorption tower 1xContent also can detecte and add
NO content in flue gas after entering denitration oxidant, and the data that will test are sent to controller, controller is according to corresponding
Data control the additional amount of denitration oxidant or the additional amount of absorbent.Setting can make the bed in absorption tower further in this way
It keeps stablizing.
Specifically, flue collector 3 is connected to a circulated air flue, circulated air flue is supplemented by flue collector 3 into absorption tower 1
Circulated air, flue collector 3 are equipped with a flue gas flow detector 21, flue gas flow detector 21, for detecting the absorption tower 1
The connecting pipe of flue gas flow at smoke inlet, flue collector 3 and circulated air flue is equipped with a circulated air controllable register door 22,
Circulated air controllable register door 22 is electrically connected with flue gas flow detector 21 by controller.If flue gas flow detector 21 detects
Practical flue gas flow is less than preset flue gas flow range, then adjusts circulated air controllable register door 22 by controller, increase follows
The additional amount of ring wind, in order to avoid phenomena such as flue gas flow deficiency causes to collapse bed.Setting can make the bed in absorption tower into one in this way
Step keeps stablizing.
Desulfurization and denitrification integral system in this specific embodiment not only can be realized simultaneously the desulphurization denitration of flue gas, may be used also
To establish bed in absorption tower automatically, and the automatic stability for maintaining bed in absorption tower, whole process only need operator defeated
Enter enabled instruction, avoid operator and frequently manually adjusted, to effectively increase the fume treatment efficiency of system.
Specific embodiment two
One kind for building bed process that this specific embodiment one discloses desulfurization and denitrification integral system is more preferably carried out
Example, this is built bed process and builds bed process for desulfurization and denitrification integral system disclosed in embodiment one, builds bed process and specifically include
Step:
S10: the practical aperture of detection bed pressure drop and Matter Transfer regulating valve, bed pressure drop=overall presure drop-sky bed pressure drop,
Overall presure drop=absorption tower smoke inlet pressure-absorption tower exhanst gas outlet pressure, empty bed pressure drop are the own resistance on absorption tower
Value makes the flue gas of a variety of flow velocitys by absorption tower when not feeding intake to absorption tower, to measure flue gas flow value and empty bed pressure drop
Corresponding relationship；
S20: judge the practical bed pressure drop detected and default bed pressure drop minimum value, preset bed pressure drop maximum value
Relationship；
S30: it if practical bed pressure drop is less than default bed pressure drop minimum value, sends aperture regulation and instructs to Matter Transfer
Regulating valve control device, aperture regulation instruction is increases the aperture of Matter Transfer regulating valve, and practical aperture+value added=mesh
Scale value, the target value are not less than default bed pressure drop minimum value and no more than default bed pressure drop maximum values；
S40: it if practical bed pressure drop is greater than default bed pressure drop maximum value, sends and closes regulating command to Matter Transfer
Regulating valve control device, aperture regulation instruction is reduces the aperture of Matter Transfer regulating valve, and practical aperture-close value=mesh
Scale value, the target value are not less than default bed pressure drop minimum value and no more than default bed pressure drop maximum values；
S50: if practical bed pressure drop is not less than default bed pressure drop minimum value and is not more than default bed pressure drop maximum value,
Then terminate to build a process；
S60: if actually build the time be greater than it is default build the time, issue alarm command, and terminate to build a process；
S70: if when practical bed pressure drop is lower than default voltage drop value or when air-introduced machine runs abnormal, closure is sent
Instruction is to Matter Transfer regulating valve and terminates to build a process, and air-introduced machine will be for that will pass through the purified flue gas of deduster from deduster
It is delivered in chimney；
S80: the bed in absorption tower is maintained to keep stablizing.
Wherein, the step S80 comprising steps of
S81: detecting the practical flue-gas temperature in the exit on absorption tower, if practical flue-gas temperature is higher than default flue-gas temperature,
Return water regulating valve is then adjusted, increases the water atomization amount into absorption tower, until actual temperature is reduced to default flue-gas temperature value；
When absorption tower outlet, observed temperature is lower than setting value, then adjusts return water regulating valve, reduces the water atomization amount into absorption tower, directly
The default flue-gas temperature value is increased to actual temperature；
Before S82: denitration oxidant being added into the flue gas for entering absorption tower, and the denitration oxidant is added in detection respectively
With the actual content that NO in flue gas after denitration oxidant is added, if after being added before the denitration oxidant or denitration oxidant being added
The actual content of NO is higher than the default content of its corresponding NO in flue gas, then increases the straying quatity of denitration oxidant；If denitration is added
The actual content of NO presets content lower than its corresponding NO before oxidant or after the addition denitration oxidant in flue gas, then reduces
The straying quatity of denitration oxidant；
S83: NO at the smoke inlet on detection absorption tower and in the flue gas of the smoke outlet of deduster respectivelyxContent and SO2
Content, if NO at the smoke inlet on absorption tower or in the flue gas of the smoke outlet of dedusterxContent or SO2It is right that content is higher than its
The default content answered, then increase the straying quatity of absorbent, if at the smoke inlet on absorption tower or the exhanst gas outlet of the deduster
NO in the flue gas at placexContent or SO2Content is lower than its corresponding default content, then reduces the straying quatity of absorbent；
S84: inputting circulated air into flue collector, and detects the practical flue gas flow at the smoke inlet on absorption tower, if real
Border flue gas flow is greater than default flue gas flow range, then the input quantity of circulated air is reduced or stop, if practical flue gas flow is less than
Default flue gas flow range, then increase the input quantity of circulated air.
It should be noted that step S81, step S82, step S83 and step S84 are arranged side by side in the step S80
Relationship；In the step S82, any one place after being added before denitration oxidant or being added denitration oxidant can also be only detected
Flue gas, without to detect the flue gas being added at denitration oxidant front and back two simultaneously；In the step S83, can also only it examine
Survey absorption tower smoke inlet at and the smoke outlet of deduster in any one place flue gas, without to detect at two simultaneously
Flue gas.
Bed process high degree of automation is built in this specific embodiment, frequent tune manually can be carried out to avoid operator
Section, to further increase the fume treatment efficiency of system.
Specific embodiment three
This specific embodiment discloses a kind of more preferred embodiment of desulfurization and denitrification integral flue gas processing method, cigarette
Gas disposal method comprising steps of
S10: flue gas is conveyed to absorption tower by flue collector, and sprays into denitration oxidant into flue collector；
S20: the flue gas after oxidation enters in absorption tower from the bottom flue on absorption tower, and with alkaline absorbent and circulating ash
Accelerate after contact through Venturi tube；
S30: it is discharged by the flue gas of desulphurization denitration from the top on the absorption tower, and enters deduster, the deduster
Absorb the dirt particle in flue gas；
S40: the part dirt particle that deduster is obtained by filtration is recycled back to absorption tower by Matter Transfer slot, returns to absorption tower
Circulating ash passes through Venturi tube with entering after the flue gas in absorption tower mixes；
S50: the bed on absorption tower is established；
Wherein, what step S50 specifically used desulfurization and denitrification integral system disclosed in embodiment two builds bed process.
Desulfurization and denitrification integral flue gas processing method in the present embodiment can remove the NO in flue gas simultaneouslyxAnd SO2, i.e.,
Desulphurization denitration processing is carried out to flue gas simultaneously, and in the method, the bed in absorption tower can be established and be automatically kept automatically
Stablize, the treatment effect and efficiency of flue gas has been effectively ensured.
It should be noted that above-described embodiment can be freely combined as needed.The above is only the utility model
Preferred embodiment, it is noted that for those skilled in the art, do not departing from the utility model principle
Under the premise of, several improvements and modifications can also be made, these improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (3)
1. a kind of desulfurization and denitrification integral system characterized by comprising
Absorption tower and deduster, the smoke inlet positioned at the bottom on the absorption tower are connected to a flue collector, the flue collector to
Flue gas to be processed is conveyed in the absorption tower, the exhanst gas outlet positioned at the top on the absorption tower is connected to the deduster,
The flue collector is equipped with a denitration oxidant adding mouth, and the denitration oxidant adding mouth and a denitration oxidant adder connect
Logical, the denitration oxidant adder is used to spray into denitration oxidant into the flue collector, and the bottom on the absorption tower is also set
There is absorbent adding mouth, the absorbent adder for the outside that the absorbent adding mouth is located at the absorption tower with one is connected to, institute
It states absorbent adder to be used to spray into alkaline absorbent into the absorption tower, is additionally provided with venturi conduit in the absorption tower,
The entrance of the venturi conduit is located at the top of the absorbent adding mouth；
The bottom on the absorption tower is connected to the bottom of the deduster by Matter Transfer slot, and the Matter Transfer slot and institute
State absorption tower communication port be located at the venturi conduit entrance lower section；
The smoke inlet and smoke outlet on the absorption tower are respectively equipped with pressure detecting instrument, and the Matter Transfer slot is equipped with object
Expect that circulating regulation valve, the pressure detecting instrument are electrically connected with the Matter Transfer regulating valve by a controller.
2. desulfurization and denitrification integral system according to claim 1, it is characterised in that:
The desulfurization and denitrification integral system further includes timer and alarm, the timer and the Matter Transfer regulating valve
It is electrically connected by controller, the alarm is electrically connected with the timer by controller.
3. desulfurization and denitrification integral system according to claim 1, it is characterised in that:
The smoke outlet on the absorption tower is equipped with temperature sensor, is equipped with a high-pressure spray gun, the high pressure in the absorption tower
Spray gun is located at the top of the venturi conduit, and the water tank for the outside that the high-pressure spray gun is located at the absorption tower with one is connected to,
Connecting pipe between the high-pressure spray gun and the water tank is equipped with a return water regulating valve, the return water regulating valve and the temperature
Sensor is spent to be electrically connected by controller；
And/or；
NO is arranged on the flue collector and/or exit of the dedusterxDetector and SO2Detector, the NOxDetector
For detecting NO in flue gasxContent, the SO2Detector is for detecting SO in flue gas2Content, the NOxDetector and SO2
Detector passes through controller respectively and is electrically connected with the absorbent adder；
And/or；
The flue collector is equipped with a pair of NOxDetector, and a pair of NOxDetector is located at the denitration oxidant and adds
Add the two sides of mouth, a pair of NOxDetector be respectively used to detection be added denitration oxidant before and after flue gas in NO content, one
To the NOxDetector passes through controller respectively and is electrically connected with the denitration oxidant adder；
And/or；
The flue collector is connected to a circulated air flue, and the circulated air flue is mended by the flue collector into the absorption tower
Circulated air is filled, the flue collector is equipped with a flue gas flow detector, the flue gas flow detector, and the flow detector is used
Flue gas flow at the smoke inlet for detecting the absorption tower, the connecting pipe of the flue collector and circulated air flue are equipped with
One circulated air controllable register door, the circulated air controllable register door are electrically connected with the flue gas flow detector by controller.
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| CN201820666103.5U CN208302515U (en) | 2018-05-07 | 2018-05-07 | A kind of desulfurization and denitrification integral system |
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| CN201820666103.5U CN208302515U (en) | 2018-05-07 | 2018-05-07 | A kind of desulfurization and denitrification integral system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108310952A (en) * | 2018-05-07 | 2018-07-24 | 龙净科杰环保技术（上海）有限公司 | A kind of desulfurization and denitrification integral system and its build bed process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108310952A (en) * | 2018-05-07 | 2018-07-24 | 龙净科杰环保技术（上海）有限公司 | A kind of desulfurization and denitrification integral system and its build bed process |
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