CN209624510U - The out of stock spray ammonia uniformity detection of boiler smoke - Google Patents
The out of stock spray ammonia uniformity detection of boiler smoke Download PDFInfo
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- CN209624510U CN209624510U CN201920363970.6U CN201920363970U CN209624510U CN 209624510 U CN209624510 U CN 209624510U CN 201920363970 U CN201920363970 U CN 201920363970U CN 209624510 U CN209624510 U CN 209624510U
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- flue gas
- sampling
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- measuring cell
- sampling probe
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Abstract
The utility model discloses a kind of out of stock spray ammonia uniformity detections of boiler smoke, including several flue gas samplers, the same autogenous cutting changing device, one ammonia analyzer, one flue gas circulation measuring cell, flue gas sampler is by scalable sampling probe, reactor flue gas sampling gaging hole, sampling probe telescopic control device, flue gas sampling heat traced hoses composition, reactor flue gas sampling gaging hole is arranged in the bottom of Benitration reactor lowest level catalyst, scalable sampling probe passes through reactor flue gas sampling gaging hole, and enter inside Benitration reactor, sampling probe telescopic control device is connect with scalable sampling probe and flue gas sampling heat traced hoses respectively, the flue gas sampling heat traced hoses of all flue gas samplers, which are collected, is connected to sample autogenous cutting changing device, the arrival end of flue gas circulation measuring cell is connect with sample autogenous cutting changing device, flue gas circulation measuring cell and one The connection of ammonia analyzer.The utility model is able to solve the problem of prior art can not embody catalyst section denitration reaction situation.
Description
Technical field
The utility model relates to generating equipment technical fields, examine more particularly to a kind of out of stock spray ammonia uniformity of boiler smoke
Survey device.
Background technique
Selective catalytic reduction (SCR) is the technical way of coal-burning power plant's removing nitrogen oxides in effluent (NOx), with
Reducing agent of the liquefied ammonia as reaction, occurs redox reaction with NOx in flue gas under the action of catalyst.Coal-burning power plant carries out
A possibility that after the transformation of SCR denitrating flue gas, air preheater service condition changes, and increases air preheater blocking.
The main side reaction of SCR is SO2Oxidation reaction and NH3With SO3Reaction generates NH4HSO4(ammonium hydrogen sulfate), reaction equation
It is as follows:
SO2+1/2O2→SO3；
SO3+NH3+H2O→NH4HSO4
Within the scope of 150~200 DEG C, ammonium hydrogen sulfate is rendered as liquid, and this temperature section just belongs to air preheater
In, low-temperature zone.Ammonium hydrogen sulfate is stickum, can capture the flying dust in flue gas, hinders the circulation and heat exchange effect of air preheater
Rate, ammonium hydrogen sulfate accelerate the corrosion of air preheater heat exchange element in acidity.To guarantee air preheater reliability service, it is necessary to reduce denitration
System the escaping of ammonia, guarantees spray ammonia uniformity, and SCR denitration device majority has all installed the escaping of ammonia on-line monitoring system, sample position
It is chosen at after Benitration reactor casing coupling flue, before air preheater, flue gas well-mixed place.The escaping of ammonia on-line monitoring
Device is only represented flue gas and be averaged ammonia slip concentration using point sampling or line sampling, monitoring data, can not be embodied catalyst section and be taken off
Nitre response situation.
Utility model content
The purpose of this utility model is that propose a kind of out of stock spray ammonia uniformity detection of boiler smoke, it is existing to solve
Technology can not embody the problem of catalyst section denitration reaction situation.
A kind of out of stock spray ammonia uniformity detection of boiler smoke, including several flue gas samplers, the same autogenous cutting change
Device, an ammonia analyzer, flue gas circulation measuring cell, the flue gas sampler is by scalable sampling probe, reactor flue gas
Sample gaging hole, sampling probe telescopic control device, flue gas sampling heat traced hoses composition, the reactor flue gas sampling gaging hole arrangement
In the bottom of Benitration reactor lowest level catalyst, the scalable sampling probe passes through the reactor flue gas sampling gaging hole,
And enter the Benitration reactor inside, the sampling probe telescopic control device respectively with the scalable sampling probe and institute
The connection of flue gas sampling heat traced hoses is stated, the flue gas sampling heat traced hoses of all flue gas samplers, which are collected, is connected to the sample
The arrival end of autogenous cutting changing device, the flue gas circulation measuring cell is connect with the sample autogenous cutting changing device, the flue gas circulation measurement
Pond is connect with the ammonia analyzer, and the ammonia analyzer is used to analyze the flue gas in flue gas circulation measuring cell.
According to the utility model proposes the out of stock spray ammonia uniformity detection of boiler smoke, by Benitration reactor most
Reactor flue gas sampling gaging hole is arranged in the bottom of lower catalyst agent, meanwhile, scalable sampling probe passes through reactor flue gas sampling
Gaging hole, and enter inside Benitration reactor, it can be good at detecting catalyst section denitration reaction situation, and all flue gases are adopted
The flue gas sampling heat traced hoses of sampling device, which are collected, is connected to sample autogenous cutting changing device, can be by an ammonia analyzer to denitration reaction
The ammonia in flue gas content of device different parts acquisition is analyzed, to judge that Benitration reactor section the escaping of ammonia situation and spray ammonia are equal
Even character condition, the arrangement achieves the uniformity on-line monitorings of ammonia distribution remaining in Benitration reactor section flue gas, can be global
It controls the out of stock reactor catalysis layer catalytic efficiency distribution situation of boiler and reacting field sprays ammonia uniformity, by point for monitoring remaining ammonia
Cloth can effectively instruct denitrating system entrance to spray ammonia valve regulated, and the escaping of ammonia is uniform after guaranteeing denitration, to avoid ammonium hydrogen sulfate
Generation.
In addition, according to the out of stock spray ammonia uniformity detection of boiler smoke provided by the utility model, can also have as
Under additional technical characteristic:
Further, the reactor flue gas sampling gaging hole is arranged in Benitration reactor lowest level catalyst bottom 50cm-
At 100cm.
Further, the outlet end of the flue gas circulation measuring cell is connected to the gas approach of electric precipitator.
Further, the quantity of the flue gas sampler is 3 or 4.
Further, the outer layer of the scalable sampling probe is equipped with probe insulation cover.
The additional aspect and advantage of the utility model will be set forth in part in the description, partially will be from following description
In become obvious, or recognized by the practice of the utility model.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will
Become obvious and be readily appreciated that, in which:
Fig. 1 is the structural representation for the out of stock spray ammonia uniformity detection of boiler smoke that an embodiment of the present invention provides
Figure；
Fig. 2 is arrangement schematic diagram of the reactor flue gas sampling gaging hole on Benitration reactor.
Specific embodiment
It is practical to this with reference to the accompanying drawing to keep the purpose of this utility model, feature and advantage more obvious and easy to understand
Novel specific embodiment is described in detail.Several embodiments of the utility model are given in attached drawing.But this is practical
It is novel to realize in many different forms, however it is not limited to embodiment described herein.On the contrary, providing these implementations
The purpose of example is to keep the disclosure to the utility model more thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixedly arranged on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side ", "upper", "lower" and similar statement for illustrative purposes only, rather than the device or member of indication or suggestion meaning
Part must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the present invention.Term " and or " used herein includes one or more relevant listed items
Any and all combinations.
Please refer to Fig. 1 and Fig. 2, the out of stock spray ammonia uniformity detection dress of the boiler smoke that an embodiment of the utility model proposes
It sets, including several flue gas samplers, the same autogenous cutting changing device 20, an ammonia analyzer 30, a flue gas circulation measuring cell 40.Cigarette
The quantity of gas sampling apparatus can be selected according to the size of Benitration reactor 50, it is preferred that the quantity of flue gas sampler
It is 3 or 4, is uniformly distributed on Benitration reactor 50.
The flue gas sampler is stretched by scalable sampling probe 11, reactor flue gas sampling gaging hole 12, sampling probe
Control device 13, flue gas sampling heat traced hoses 14 form.
The reactor flue gas sampling gaging hole 12 is arranged in the bottom of 50 lowest level catalyst of Benitration reactor (i.e. in Fig. 2
The bottom of catalyst layer 51), it is preferred that the reactor flue gas sampling gaging hole 12, which is arranged in the Benitration reactor 50, to be catalyzed
At the bottom 50cm-100cm of oxidant layer 51.
The scalable sampling probe 11 passes through the reactor flue gas sampling gaging hole 12, and enters the Benitration reactor
Inside 50.
The sampling probe telescopic control device 13 respectively with the scalable sampling probe 11 and the flue gas sampling companion
Hot hose 14 connects, and 11 mating telescopic control devices 13 of every scalable sampling probe are scalable to reactor section not
The flue gas sampling of different parts is carried out with depth location.
The flue gas sampling heat traced hoses 14 of all flue gas samplers, which are collected, is connected to the sample autogenous cutting changing device 20,
The arrival end of the flue gas circulation measuring cell 40 is connect with the sample autogenous cutting changing device 20, the flue gas circulation measuring cell 40 and one
Ammonia analyzer 30 connects, and the ammonia analyzer 30 is used to analyze the flue gas in flue gas circulation measuring cell 40.This reality
It applies in example, the outlet end of the flue gas circulation measuring cell 40 is connected to the gas approach of electric precipitator 60.Utilize Benitration reactor
Pressure difference between 50 and electric precipitator 60 can be realized unpowered continuous sampling, further promote the stability of flue gas sampling.It needs
It is noted that scalable sampling probe 11, sampling probe telescopic control device 13, autogenous cutting changing device 20 in the present embodiment,
Equipment commonly used in the art can be used in flue gas circulation measuring cell 40, electric precipitator 60 etc., it is not limited here.In addition, in order to protect
The Effect on Detecting of scalable sampling probe 11 at high temperature is demonstrate,proved, probe heat preservation can be equipped in the outer layer of scalable sampling probe 11
Cover 111.
The sampling flue gas flow direction of the above-mentioned out of stock spray ammonia uniformity detection of boiler smoke are as follows: Benitration reactor 50 → can stretch
Contracting sampling probe 11 → sampling probe telescopic control device 13 → flue gas sampling heat traced hoses 14 → sample autogenous cutting 20 → cigarette of changing device
Air-flow leads to the gas approach of 40 → electric precipitator of measuring cell 60.
According to the out of stock spray ammonia uniformity detection of boiler smoke provided in this embodiment, by most lower in Benitration reactor
Reactor flue gas sampling gaging hole is arranged in the bottom of layer catalyst, meanwhile, scalable sampling probe is surveyed across reactor flue gas sampling
Hole, and enter inside Benitration reactor, it can be good at detecting catalyst section denitration reaction situation, and all flue gas samplings
The flue gas sampling heat traced hoses of device, which are collected, is connected to sample autogenous cutting changing device, can be by an ammonia analyzer to Benitration reactor
The ammonia in flue gas content of different parts acquisition is analyzed, to judge that Benitration reactor section the escaping of ammonia situation and spray ammonia are uniform
Character condition, the arrangement achieves the uniformity on-line monitorings of ammonia distribution remaining in Benitration reactor section flue gas, global can slap
It controls the out of stock reactor catalysis layer catalytic efficiency distribution situation of boiler and reacting field sprays ammonia uniformity, by point for monitoring remaining ammonia
Cloth can effectively instruct denitrating system entrance to spray ammonia valve regulated, and the escaping of ammonia is uniform after guaranteeing denitration, to avoid ammonium hydrogen sulfate
Generation.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
Stating may not refer to the same embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be
It can be combined in any suitable manner in any one or more embodiment or examples.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it should not be understood as limiting the scope of the patent of the utility model.It should be pointed out that for the common of this field
For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
In the protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (5)
1. a kind of out of stock spray ammonia uniformity detection of boiler smoke, which is characterized in that including several flue gas samplers, one
Sample autogenous cutting changing device, an ammonia analyzer, a flue gas circulate measuring cell, and the flue gas sampler is by scalable sampling probe, anti-
Answer device flue gas sampling gaging hole, sampling probe telescopic control device, flue gas sampling heat traced hoses composition, the reactor flue gas sampling
Gaging hole is arranged in the bottom of Benitration reactor lowest level catalyst, and the scalable sampling probe passes through the reactor flue gas and adopts
Sample gaging hole, and enter the Benitration reactor inside, the sampling probe telescopic control device respectively with the scalable sampling
Probe is connected with the flue gas sampling heat traced hoses, and the flue gas sampling heat traced hoses of all flue gas samplers collect connection
To the sample autogenous cutting changing device, the arrival end of the flue gas circulation measuring cell is connect with the sample autogenous cutting changing device, the flue gas
Circulation measuring cell is connect with the ammonia analyzer, and the ammonia analyzer is used to carry out the flue gas in flue gas circulation measuring cell
Analysis.
2. the out of stock spray ammonia uniformity detection of boiler smoke according to claim 1, which is characterized in that the reactor
Flue gas sampling gaging hole is arranged at the Benitration reactor lowest level catalyst bottom 50cm-100cm.
3. the out of stock spray ammonia uniformity detection of boiler smoke according to claim 1, which is characterized in that the flue gas stream
The outlet end of logical measuring cell is connected to the gas approach of electric precipitator.
4. the out of stock spray ammonia uniformity detection of boiler smoke according to claim 1, which is characterized in that the flue gas is adopted
The quantity of sampling device is 3 or 4.
5. the out of stock spray ammonia uniformity detection of boiler smoke according to claim 1, which is characterized in that described scalable
The outer layer of sampling probe is equipped with probe insulation cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920363970.6U CN209624510U (en) | 2019-03-21 | 2019-03-21 | The out of stock spray ammonia uniformity detection of boiler smoke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920363970.6U CN209624510U (en) | 2019-03-21 | 2019-03-21 | The out of stock spray ammonia uniformity detection of boiler smoke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209624510U true CN209624510U (en) | 2019-11-12 |
Family
ID=68457439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920363970.6U Expired - Fee Related CN209624510U (en) | 2019-03-21 | 2019-03-21 | The out of stock spray ammonia uniformity detection of boiler smoke |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209624510U (en) |
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2019
- 2019-03-21 CN CN201920363970.6U patent/CN209624510U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191112 Termination date: 20200321 |
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| CF01 | Termination of patent right due to non-payment of annual fee |