CN208320437U - A kind of coal-fired plant flue gas SO3Removing system - Google Patents
A kind of coal-fired plant flue gas SO3Removing system Download PDFInfo
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- CN208320437U CN208320437U CN201820086395.5U CN201820086395U CN208320437U CN 208320437 U CN208320437 U CN 208320437U CN 201820086395 U CN201820086395 U CN 201820086395U CN 208320437 U CN208320437 U CN 208320437U
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Abstract
The utility model discloses SO in a kind of coal-fired plant flue gas3Removing system, alkaline solution inside the system liquid reserve tank is under the action of variable frequency pump, it is flowed out from liquid reserve tank, finally it is back to inside liquid reserve tank, form closed type alkaline solution circulation loop, alkaline solution needed for all spray assemblies passes through draws in the main line of bye-pass self-closing type alkaline solution circulation loop, main line can be designed as compared with Large Diameter Pipeline in this way, and the working frequency of variable frequency pump is according to the aperture regulation of the flow control valve, to guarantee that the main line internal solution flow velocity of alkaline solution circulation loop maintains preset range, to effectively prevent that the technical issues of crystallization leads to blocking pipeline easily occurs in sodium carbonate liquor transmission process, improve safety and the working efficiency of unit operation.
Description
Technical field
The utility model relates to fume treatment technical field, in particular to a kind of coal-fired plant flue gas SO3Removing system.
Background technique
Currently, Coal-fired Power Plant in China SO3The mode of removing, belongs to tail portion cooperation-removal, i.e. air preheater tail portion is set
The equipment such as electric precipitator, wet desulphurization, the wet electrical dust precipitator set have cooperation-removal flue gas SO3Function, this function category
In the synergistic function of auxiliary, not active removing truly, removal efficiency are low；These equipment are arranged at empty pre- simultaneously
Device end, for the SCR denitration and air preheater of front end, flue gas SO3It is not removed effectively, therefore SO3Harm still deposit
?.
Foreign countries take in recent years SCR (full name in English selective catalytic reduction, hereinafter referred to as
SCR the chemical removal SO of alkaline solution (such as sodium carbonate liquor)) is sprayed into before denitration and before air preheater3Method, using this work
Skill, the drawbacks of capable of overcoming cooperation-removal mode, removal efficiency are high.Existing coal-fired plant flue gas SO3There is significant lack in removing system
Fall into: sodium carbonate liquor delivery pump completes injection by spray gun each in Pipeline transport to flue, this mode feed line diameters is usual
Smaller, pipe flow speed fluctuation is larger when unit load changes, and crystallization occurs easily to block pipeline, causes system-down.
In addition, other than the above technical problem, since sodium carbonate liquor easily crystallizes, sodium carbonate dissolution, solution storage and
In transmission process, it is required to guarantee certain temperature.Usual manner is using electric heating as dissolution and heat tracing heat source, heating power
Greatly, heat tracing effect is bad, and safety is poor, and that there are heating methods is uneven, still easily causes pipeline crystalline polamer.Even if adopting
Use steam as heat source, the condensed water that steam condenses after dissolution and heat tracing is expelled directly out, and causes the waste of condensed water.
Therefore, how a kind of higher coal-fired plant flue gas SO of unit job stability is provided3Removing system is this field
Interior technical staff technical problem urgently to be resolved.
Utility model content
The utility model provides SO in a kind of coal-fired plant flue gas3Removing system, including liquid reserve tank and variable frequency pump, the two are logical
It crosses pipeline and forms closed type alkaline solution circulation loop；The removing system further includes spray assemblies, and the spray assemblies include
Sprinkler part, the sprinkler part are connected to the main line of the alkaline solution circulation loop, and the branch pipe by bye-pass
Road is provided with flow control valve, and the working frequency of the variable frequency pump is according to the aperture regulation of the flow control valve, so that institute
The main line internal solution flow velocity for stating alkaline solution circulation loop maintains preset range.
Compared with prior art open type direct current solution spraying system, in coal-fired plant flue gas provided by the utility model
SO3Alkaline solution in removing system inside liquid reserve tank flows out under the action of variable frequency pump from liquid reserve tank, is finally back to storage
Inside liquid case, closed type alkaline solution circulation loop is formed, alkaline solution needed for all spray assemblies passes through bye-pass certainly
It is drawn in the main line of closed type alkaline solution circulation loop, such main line can be designed as compared with Large Diameter Pipeline, and variable frequency pump
Working frequency according to the aperture regulation of the flow control valve, to guarantee the main line internal solution of alkaline solution circulation loop
Flow velocity maintains preset range, to effectively prevent easily occurring in sodium carbonate liquor transmission process crystallization to block pipeline
The technical issues of, improve safety and the working efficiency of unit operation.
It optionally, further include header tank and condensate pump, the header tank partially steams in power plant steam pipeline for collecting
The condensed water formed after vapour heat exchange；The header tank and the condensate pump are used by pipeline formation enclosed heat tracing circulation circuit
Rinse water is provided in the main line heat tracing given in the alkaline solution circulation loop, and for sprinkler part.
Optionally, further include steam inlet pipe, the import of the air inlet pipe is connected to power plant steam pipeline by flow valve, it is described into
The outlet of steam pipe is immersed in the condensed water of the header tank.
It optionally, further include condensate temperature sensor, for obtaining the condensate temperature in the header tank；It is described into
Flow valve on steam pipe adjusts its valve port opening according to acquired condensate temperature, to maintain in the header tank at condensed water
In predetermined temperature range.
Optionally, the inside of the liquid reserve tank is additionally provided with the first heat exchanger tube, import, the outlet point of first heat exchanger tube
Not Lian Tong power plant steam pipeline, the header tank import, some vapor and inside the liquid reserve tank alkaline solution heat exchange it is cold
The solidifying condensation flow formed is to the header tank.
Optionally, further include dissolving tank, prepare alkaline solution for dissolving alkali solid and provided for the liquid reserve tank
Alkaline solution；The inside of the dissolving tank has the second heat exchanger tube, and inlet tube, the outlet of second heat exchanger tube are respectively communicated with
The import of the power plant steam pipeline, the header tank, so that the alkaline solution inside some vapor and the dissolving tank exchanges heat
The condensation flow formed is condensed to the header tank.
Optionally, further include the first temperature sensor and second temperature sensor, be respectively used to detect the liquid reserve tank and
The temperature of the dissolving tank internal liquid；The inlet tube of the inlet tube of first heat exchanger tube and second heat exchanger tube is pacified respectively
Equipped with first switch valve and second switch valve, the first switch valve and the second switch valve are respectively according to first temperature
Temperature signal acquired in sensor and the second temperature sensor adjusts valve port opening.
Optionally, it is further provided with branch line, the heat tracing main line in the heat tracing circulation circuit passes through branched pipe
Road is connected to the dissolving tank, to provide dissolution water for the dissolving tank, and is provided with flow valve on the branch line.
Optionally, it is additionally provided with air compressor, for providing atomizing power to the sprinkler part.
Optionally, it is further provided with water supply branch, one end of the water supply branch is connected to the heat tracing circulation and returns
Road, the other end is connected to the bye-pass with the alkaline solution circulation loop, and water supply branch road is provided with for water flow
Measure valve.
Detailed description of the invention
Fig. 1 is coal-fired plant flue gas SO in a kind of embodiment of the utility model3The schematic illustration of removing system.
Wherein, the one-to-one relationship in figure between component names and label is as follows:
Dissolving tank 1, second temperature sensor 1.1, the second heat exchanger tube 1.2, blender 1.3；
Liquid reserve tank 2, the first temperature sensor 2.1, the first heat exchanger tube 2.2；
Variable frequency pump 3.1, main line 3.2；Bye-pass 3.3, flow control valve 3.4；
Flue 4, sprinkler part 4.1；
Power plant steam pipeline 5, flow valve 5.1, steam inlet pipe 5.2, second switch valve 5.3, inlet tube 5.4, drain valve 5.5,
First switch valve 5.6, inlet tube 5.7, drain valve 5.8；
Header tank 6, condensate temperature sensor 6.1；
Condensate pump 7.1, flushing water branch 7.3, rinses water flow valve at the heat tracing main line 7.2 in heat tracing circulation circuit
7.4, branch line 7.5, flow valve 7.6；
Thermal insulation material 8；
Air compressor 9, flow valve 9.1, flow valve 9.2.
Specific embodiment
For easily generation crystallization in the sodium carbonate liquor transmission process being previously mentioned in background technique to block pipeline
Technical problem has made intensive studies herein, and research is found: the mode of movement of sodium carbonate liquor in the prior art is predominantly opened
Formula direct current mode, the caliber of delivery pipe is certain, when unit load difference or when coal-fired sulfur content changes, in flue gas
SO3Concentration will change, therefore in order to guarantee the SO after removing in flue gas3Concentration remains unchanged, and the unit time sprays molten
Liquid measure is also just different.Since traditional open type direct current mode caliber is certain, therefore when the flow in delivery pipe changes, liquid in pipe
Flow velocity also changes, and causes liquid in pipe fluctuation larger, therefore generate Crystallization Plugging pipe, in turn results in shutdown.
On the basis of the studies above discovery, carry out further exploration herein and proposed a kind of solving above-mentioned technology and asking
The technical solution of topic.
In order to make those skilled in the art more fully understand the technical solution of the utility model, with reference to the accompanying drawing and have
The utility model is described in further detail for body embodiment.
Referring to FIG. 1, Fig. 1 is coal-fired plant flue gas SO in a kind of embodiment of the utility model3The principle of removing system is shown
It is intended to.
The utility model provides SO in a kind of coal-fired plant flue gas3Removing system, mainly to enter the out of stock device of SCR it
Flue gas before preceding and air preheater carries out SO3Removing.The system includes liquid reserve tank 2, variable frequency pump 3.1, sprinkler part 4.1.
Wherein liquid reserve tank 2 can be about 20% for mass concentration for containing prepared alkaline solution solution, alkaline solution
Sodium carbonate liquor, naturally it is also possible to be other sodium salt solutions or other alkaline solutions.
Both liquid reserve tank 2 and variable frequency pump 3.1 are by pipeline formation closed type alkaline solution circulation loop, i.e. liquid reserve tank 2
Taphole, the import of variable frequency pump 3.1, the outlet of variable frequency pump 3.1, liquid reserve tank 2 solution inlet port pass sequentially through piping connection, shape
At closed circuit.In this way under the action of variable frequency pump 3.1, the alkaline solution in liquid reserve tank 2 is from its outlet outflow, then by the road
Finally return again to liquid reserve tank 2.
Variable frequency pump 3.1 mainly provides the circulation power of alkaline solution, and variable frequency pump 3.1 is conducive to solution in control loop circuit
Flow velocity is maintained at a steady state value.
Spray assemblies in the utility model include sprinkler part 4.1, the quantity of sprinkler part 4.1 can for one or
More than one, is configured according to the actual situation.Sprinkler part 4.1 can be spray tube, be provided with nozzle on spray tube, certainly
It may be other forms.Sprinkler part 4.1 in the utility model is connected to the master of alkaline solution circulation loop by bye-pass
Pipeline 3.2, that is to say, that part solution can be flowed into through bye-pass 3.3 and be sprayed in the main line 3.2 of alkaline solution circulation loop
Leaching component 4.1 is sprayed, with the SO in flue gas3Reaction generates solid-state sulphate particle collected by the deduster of rear end, finally
Realize gaseous state SO3Transformation to solid granulates, to reach removing flue gas SO3Effect；Another part solution is still in main line
It is finally returned that inside liquid reserve tank 2 along main line 3.2.
For spray assemblies all in unit, flows into the amount of solution in all bye-passes and be less than in return liquid reserve tank 2
Amount of solution, the two ratio substantially 0.1 to 0.5.That is, small part solution is split to bye-pass 3.3 in main line, it is complete
At spray.
Also, it is connected on the bye-pass of sprinkler part 4.1 and is additionally provided with flow control valve 3.4, flow into branch pipe for adjusting
The flow of the alkaline solution on road 3.3, to adapt to the variation of unit difference operating condition and fire coal species.The working frequency of variable frequency pump 3.1
According to the aperture regulation of the flow control valve 3.4, to guarantee the 3.2 internal solution flow velocity of main line of alkaline solution circulation loop
Preset range is maintained, theoretically, guarantees that the 3.2 internal solution flow velocity of main line of alkaline solution circulation loop remains constant, but
Practical control situation is allowed for, the flow velocity that can permit in main line 3.2 changes in certain deviation.
Wherein, the preset range of the 3.2 internal solution flow velocity of main line of alkaline solution circulation loop can be according to specific machine
Group carries out Rational choice.
Compared with prior art open type direct current solution spraying system, in coal-fired plant flue gas provided by the utility model
SO3Alkaline solution in removing system inside liquid reserve tank 2 flows out under the action of variable frequency pump 3.1 from liquid reserve tank 2, final to return
It flow to inside liquid reserve tank 2, forms closed type alkaline solution circulation loop, alkaline solution needed for all spray assemblies passes through branch
It is drawn in the main line 3.2 of pipeline self-closing type alkaline solution circulation loop, such main line 3.2 can be designed as larger pipe
Diameter, and the working frequency of variable frequency pump 3.1 is according to the aperture regulation of the flow control valve, to guarantee alkaline solution circulation loop
3.2 internal solution flow velocity of main line maintain preset range, to effectively prevent in sodium carbonate liquor transmission process easily
The technical issues of crystallization is to block pipeline occurs, improves safety and the working efficiency of unit operation.
Use electric heating as heat tracing heat source the prior art referred in background technique, heat tracing effect is bad, safety
Property difference another technical problem, further improvement is proposed to system herein.
Power plant steam pipeline 5 is certainly existed in coal-burning power plant, and about 180 DEG C~300 DEG C of the temperature of steam, pressure is
0.6MPa~1.0MPa.The one of effect of steam in power plant is to provide heat source for the component in each mechanism, and some vapor changes
Condensed water is formed after heat.The condensed water after steam heat-exchanging is typically rejected to the external world in the prior art, and the temperature of condensed water is also opposite
It is relatively high, cause energy dissipation.
System is improved by power plant steam herein, specific setting is as follows.
SO in above-mentioned coal-fired plant flue gas3Header tank 6 and condensate pump 7.1 can be further arranged in removing system, catchment
Case 6 is for collecting the condensed water formed after the steam heat-exchanging of part in power plant steam pipeline 5.Condensate pump 7.1 and header tank 6 pass through
Pipeline forms enclosed heat tracing circulation circuit, for heating to the main line 3.2 in alkaline solution circulation loop.
Electric heating is replaced using the waste heat of condensed water after steam heat-exchanging in power plant steam pipeline 5 herein, the alkali in main line
Property solution carry out heat tracing, condensate water circulatory utilize, reduce energy loss, improve utilization efficiency.
After 6 internal condensation water recycled for multiple times of header tank, temperature cannot be satisfied the use demand.Therefore herein
Also further setting steam inlet pipe 5.2, the import of steam inlet pipe 5.2 are connected to power plant steam pipeline 5, steam inlet pipe 5.2 by flow valve 5.1
Outlet immerse in the condensed water of header tank 6, such some vapor can add through flow valve 5.1 for the condensed water in header tank 6
Heat, substantially condensate temperature predetermined temperature range in maintenance header tank 6.
In order to realize intelligentized control method, in above-described embodiment, SO in the coal-fired plant flue gas in the utility model3Removing system
System can also include condensate temperature sensor 6.1, for obtaining the condensate temperature in header tank 6.Stream on steam inlet pipe 5.2
It measures valve and its valve port opening is adjusted according to acquired condensate temperature, to maintain condensed water in the header tank 6 to be in predetermined temperature
Spend range.
That is, flow valve is opened, portion when condensate temperature is lower than predetermined temperature range minimum value in header tank 6
Divide steam to flow into inside header tank 6 along steam inlet pipe 5.2 to heat condensed water, until condensate temperature reaches predetermined in header tank 6
The maximum value of temperature range, flow valve are closed.By taking sodium carbonate liquor as an example, condensate temperature substantially requires to maintain in header tank 6
In 50 degrees centigrades.
By taking sodium carbonate liquor as an example, the solution temperature in fluid reservoir needs substantially to control at 40 DEG C to 50 DEG C, to avoid it
Crystallization.Therefore the inside of liquid reserve tank 2 is additionally provided with the first heat exchanger tube 2.2, the inlet tube 5.7 of the first heat exchanger tube 2.2, outlet difference
It is connected to power plant steam pipeline 5, header tank 6, so that some vapor in power plant steam pipeline 5 and the alkalinity inside liquid reserve tank 2 are molten
The condensed water that liquid heat exchange condensation is formed flow to header tank 6 by the outlet of the first heat exchanger tube 2.2.Steam can be to liquid reserve tank 2 in this way
Internal alkaline solution is heated, and to avoid alkali solute crystallization, and condensation flow to the header tank 6 after heat exchange is recycled
It is used in the main line heat tracing to alkaline solution circulation loop.
In order to realize the concentrated setting of system, SO in coal-fired plant flue gas herein3Removing system still further comprises molten
Tank 1 is solved, prepare alkaline solution for dissolving alkali solid and provides alkaline solution for liquid reserve tank 2；The inside of dissolving tank 1 has
Second heat exchanger tube 1.2, inlet tube 5.4, the outlet of the second heat exchanger tube 1.2 are respectively communicated with power plant steam pipeline 5, header tank 6
Import, so that the alkaline solution heat exchange inside some vapor and dissolving tank condenses the condensation flow formed to header tank 6.
As above be provided with the advantage of three aspects, first, alkaline matter completes to prepare in dissolving tank, dissolving tank 1 is direct right
Fluid reservoir provides alkaline solution, and the concentration that system may be implemented is prepared；The second, setting power plant steam can be molten in dissolving tank 1
The configuration of liquid provides heat；The condensed water formed after third, steam heat-exchanging comes together in inside header tank 6, acts on for heat tracing, real
Existing heat utilization maximizes.
From the above, it can be seen that the condensate water circulatory that steam heat-exchanging is formed in this system is used in system, no row
It wastes out.
Branch line 7.5 is further provided in the system, the heat tracing main line 7.2 in heat tracing circulation circuit passes through branch
Pipeline 7.5 is connected to the dissolving tank 1, and flow valve is provided on branch line, and such heat tracing circulation circuit can be dissolution
Tank 1 provides the dissolution configuration required water of solution, and flow valve 7.6 controls the condensate flow on branch line 7.5.
Simple signal is given in Fig. 1, is provided with blender 1.3 in dissolving tank 1, but the structure of dissolving tank 1 and unlimited
Shown in Fig. 1, do not specifically described herein about the specific setting inside dissolving tank 1, as long as being able to achieve matching for alkaline solution
It sets.
It, can also be in each heat exchanger tube in order to guarantee the complete heat exchange of steam and flow into the only condensed water in header tank 6
Outlet be arranged drain valve, as shown in Figure 1, the outlet of the first heat exchanger tube 2.2 is provided with drain valve 5.8, the second heat exchanger tube 1.2
Outlet be provided with drain valve 5.5
In order to realize intelligent control, it is also provided with the first temperature sensor 2.1 in same system and second temperature passes
Sensor 1.1 is respectively used to the temperature of detection liquid reserve tank 2 and 1 internal liquid of dissolving tank；The import and second of first heat exchanger tube 2.2
The import of heat exchanger tube 1.2 is separately installed with first switch valve 5.6 and second switch valve 5.3, first switch valve 5.6 and second switch
Valve 5.3 respectively open by the adjusting of the temperature signal according to acquired in the first temperature sensor 2.1 and second temperature sensor 1.1 valve port
Degree.The temperature of liquid reserve tank 2 and dissolving tank interior media is maintained within a certain range using steam heat-exchanging in this way.
Pipeline and sprinkler part 4.1 in spray assemblies need periodic cleaning, to remove the spray of pipeline and sprinkler part 4.1
Remaining solid particle on mouth.
System in the various embodiments described above can also be further provided with flushing water branch 7.3, and the one of flushing water branch 7.3
End is connected to heat tracing circulation circuit, and the other end is connected to the bye-pass with alkaline solution circulation loop, and flushing water branch 7.3
On be provided with rinse water flow valve 7.4.
Condensed water in this way in heat tracing circulation circuit can be by flushing water branch 7.3 to the branch of alkaline solution circulation loop
Solution supplies water in pipeline 3.3, rinses use demand to meet to shut down.When sprinkler part 4.1 and the pipeline communicated therewith need
When clearing up, main line 3.3 and related valve only need to be closed, and open flushing water flow valve, the part in heat tracing circulation circuit
The pipeline that condensed water will enter sprinkler part 4.1 and communicate therewith is not necessarily to that cleaning device is in addition arranged, simplied system structure,
Reduce use cost.
The outside of the main line 3.2 of 7.2 pipeline of heat tracing master and alkaline solution circulation loop in heat tracing circulation circuit can wrap
Thermal insulation material 8 is wrapped up in, to improve heat exchange efficiency.
In addition, can also include air compressor 9 in above-mentioned each system, air compressor 9 be respectively sprayed by pipeline connection
Component 4.1 improves the utilization rate and SO of solution so that alkaline solution atomization is sprayed onto inside flue 43Removal efficiency.Air pressure
Pipeline setting between contracting machine 9 and sprinkler part 4.1 can refer to the prior art, and flow valve 9.1 can be set on connecting line
With flow valve 9.2, wherein compressed air enters inside sprinkler part 4.1 by flow valve 9.1, plays the role of atomized soln.
In the process of running, if sprinkler part 4.1 blocks, flow valve 9.2 is opened, and compressed air enters inside sprinkler part 4.1
Play the role of blowback blockage removing.
Above to a kind of coal-fired plant flue gas SO provided by the utility model3Removing system is described in detail.This
It applies specific case in text to be expounded the principles of the present invention and embodiment, the explanation of above embodiments is
It is used to help understand the method and its core concept of the utility model.It should be pointed out that for the ordinary skill people of the art
For member, without departing from the principle of this utility model, several improvements and modifications can be made to this utility model, this
A little improvement and modification are also fallen into the protection scope of the utility model claims.
Claims (10)
1. SO in a kind of coal-fired plant flue gas3Removing system, which is characterized in that including liquid reserve tank (2) and variable frequency pump (3.1), the two
Closed type alkaline solution circulation loop is formed by pipeline；The removing system further includes spray assemblies, the spray assemblies packet
It includes sprinkler part (4.1), the sprinkler part (4.1) is connected to the main line of the alkaline solution circulation loop by bye-pass
(3.2), it and on the bye-pass (3.3) is provided with flow control valve, the working frequency of the variable frequency pump (3.1) is according to
The aperture regulation of flow control valve, so that main line (3.2) internal solution flow velocity of the alkaline solution circulation loop maintains
Preset range.
2. SO in coal-fired plant flue gas as described in claim 13Removing system, which is characterized in that further include header tank (6) and
Condensate pump (7.1), the header tank (6) is for collecting the condensation formed after the steam heat-exchanging of part in power plant steam pipeline (5)
Water；The header tank (6) and the condensate pump (7.1) are by pipeline formation enclosed heat tracing circulation circuit, for the alkali
Property solution circulation loop in main line carry out heat tracing, and for sprinkler part (4.1) provide rinse water.
3. SO in coal-fired plant flue gas as claimed in claim 23Removing system, which is characterized in that it further include steam inlet pipe (5.2),
The import of the steam inlet pipe (5.2) is connected to power plant steam pipeline (5) by flow valve, and the outlet of the steam inlet pipe (5.2) is immersed
In the condensed water of the header tank (6).
4. SO in coal-fired plant flue gas as claimed in claim 33Removing system, which is characterized in that further include that condensate temperature passes
Sensor (6.1), for obtaining the condensate temperature in the header tank (6)；Flow valve on the steam inlet pipe (5.2) is according to institute
The condensate temperature of acquisition adjusts its valve port opening, to maintain the header tank (6) interior condensed water to be in predetermined temperature range.
5. such as SO in the described in any item coal-fired plant flue gas of claim 2 to 43Removing system, which is characterized in that the liquid storage
The inside of case (2) is additionally provided with the first heat exchanger tube (2.2), and inlet tube, the outlet of first heat exchanger tube (2.2) are respectively communicated with
The alkaline solution of the import of power plant steam pipeline (5), the header tank (6), some vapor and the liquid reserve tank (2) inside exchanges heat
The condensation flow formed is condensed to the header tank (6).
6. SO in coal-fired plant flue gas as claimed in claim 53Removing system, which is characterized in that further include dissolving tank (1), use
In dissolution alkali solid to prepare alkaline solution and provide alkaline solution for the liquid reserve tank (2)；The inside of the dissolving tank (1)
With the second heat exchanger tube (1.2), inlet tube, the outlet of second heat exchanger tube (1.2) are respectively communicated with the power plant steam pipe
The import on road (5), the header tank (6), so that the alkaline solution inside some vapor and the dissolving tank (1) dissolving tank exchanges heat
The condensation flow formed is condensed to the header tank (6).
7. SO in coal-fired plant flue gas as claimed in claim 63Removing system, which is characterized in that further include the first temperature sensing
Device (2.1) and second temperature sensor (1.1) are respectively used to detect the liquid reserve tank (2) and the dissolving tank (1) internal liquid
Temperature；The import of first heat exchanger tube (2.2) and the import of second heat exchanger tube (1.2) are separately installed with first switch
Valve and second switch valve, the first switch valve and the second switch valve are respectively according to first temperature sensor (2.1)
Valve port opening is adjusted with temperature signal acquired in the second temperature sensor (1.1).
8. SO in the coal-fired plant flue gas as described in claim 6 or 73Removing system, which is characterized in that also further setting
Have branch line (7.5), the heat tracing main line in the heat tracing circulation circuit is connected to the dissolving tank by branch line (7.5)
(1), to provide dissolution water for the dissolving tank (1), and flow valve is provided on the branch line (7.5).
9. such as SO in the described in any item coal-fired plant flue gas of claim 2 to 43Removing system, which is characterized in that also further
It is provided with flushing water branch (7.3), one end of the flushing water branch (7.3) is connected to the heat tracing master in the heat tracing circulation circuit
Pipeline, the other end are connected to the bye-pass (3.3) with the alkaline solution circulation loop, and the flushing water branch (7.3)
On be provided with rinse water flow valve (7.4).
10. such as SO in the described in any item coal-fired plant flue gas of Claims 1-43Removing system, which is characterized in that be additionally provided with
Air compressor (9), for providing atomizing power to the sprinkler part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820086395.5U CN208320437U (en) | 2018-01-18 | 2018-01-18 | A kind of coal-fired plant flue gas SO3Removing system |
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| CN201820086395.5U CN208320437U (en) | 2018-01-18 | 2018-01-18 | A kind of coal-fired plant flue gas SO3Removing system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107998862A (en) * | 2018-01-18 | 2018-05-08 | 福建龙净环保股份有限公司 | A kind of coal-fired plant flue gas SO3Removing system |
| CN115738630A (en) * | 2022-11-29 | 2023-03-07 | 重庆凯杰林环保工程有限公司 | Waste gas cooling and desulfurizing system and method |
-
2018
- 2018-01-18 CN CN201820086395.5U patent/CN208320437U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107998862A (en) * | 2018-01-18 | 2018-05-08 | 福建龙净环保股份有限公司 | A kind of coal-fired plant flue gas SO3Removing system |
| CN107998862B (en) * | 2018-01-18 | 2024-03-08 | 福建龙净环保股份有限公司 | Flue gas SO of coal-fired power plant 3 Removal system |
| CN115738630A (en) * | 2022-11-29 | 2023-03-07 | 重庆凯杰林环保工程有限公司 | Waste gas cooling and desulfurizing system and method |
| CN115738630B (en) * | 2022-11-29 | 2024-05-10 | 重庆凯杰林环保工程有限公司 | System and method for cooling and desulfurizing waste gas |
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