CN207964786U - Ammonia escape detection device based on comparison difference method - Google Patents
Ammonia escape detection device based on comparison difference method Download PDFInfo
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- CN207964786U CN207964786U CN201820453295.1U CN201820453295U CN207964786U CN 207964786 U CN207964786 U CN 207964786U CN 201820453295 U CN201820453295 U CN 201820453295U CN 207964786 U CN207964786 U CN 207964786U
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- flue gas
- ammonia
- flow rate
- gas flow
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 119
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 58
- 238000001514 detection method Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 35
- 239000003546 flue gas Substances 0.000 claims abstract description 113
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 110
- 239000000779 smoke Substances 0.000 claims abstract description 14
- 238000005070 sampling Methods 0.000 claims description 25
- 239000007789 gas Substances 0.000 claims description 23
- 206010022000 influenza Diseases 0.000 claims description 22
- 239000000203 mixture Substances 0.000 claims description 19
- 235000019504 cigarettes Nutrition 0.000 claims description 5
- 238000010531 catalytic reduction reaction Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 4
- 239000004615 ingredient Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a based on compare difference method ammonia escape detection device, including the computer, be arranged in detecting flue gas velocity of flow detecting system, be arranged in detecting NOx and O in flue gas in SCR reactor entry flue based on net method based on flue gas velocity of flow in net method detection SCR reactor entry flue2First flue gas component detection system for concentration and used for detecting NOx and O in flue gas in outlet flue of SCR (Selective catalytic reduction) reactor based on grid method2Concentration second flue gas component detection system and ammonia gas flowmeter for detecting ammonia gas flow in ammonia gas input pipe of SCR reactor, wherein output end of ammonia gas flowmeter and first flue gas flow velocityThe output end of the detection system, the output end of the first smoke component detection system and the output end of the second smoke component detection system are connected with the input end of the computer, and the device can accurately detect and obtain the total ammonia escape amount and the average ammonia escape concentration of the outlet of the SCR reactor.
Description
Technical field
The utility model is related to a kind of the escaping of ammonia detection devices, and in particular to one kind is detected based on differential technique the escaping of ammonia is compared
Device.
Background technology
Existing SCR or SNCR reactor outlets the escaping of ammonia measuring system is local sampling measuring system, in general flue
Only arrange a measuring point and configure a flue gas analyzer, such as local laser method only measure one of light path by flue gas partial
The escaping of ammonia, extraction method only measures the escaping of ammonia etc. for extracting flue gas measuring point position, and measurement data is only capable of displaying measurement regional area
The escaping of ammonia situation.However SCR denitration device flue cross section product is general all larger, and flue gas flow field and distribution of concentration are all very not
Uniformly, thus the data of local measurement it is overall often and in entire flue cross section the escaping of ammonia situation deviation it is larger, can not foundation
The data accurately learn the total amount of ammonia slip of denitrification apparatus and average ammonia slip concentration.
Utility model content
The shortcomings that the purpose of the utility model is to overcome the above-mentioned prior arts provides a kind of based on comparison differential technique ammonia
Escape detection device, which can accurately detect to obtain the total amount of ammonia slip of SCR reactor outlets and average the escaping of ammonia is dense
Degree.
In order to achieve the above objectives, described in the utility model that calculating is included based on comparison differential technique the escaping of ammonia detection device
Machine, for based on gridding method detection SCR reactor inlet flues in flue gas flow rate flue gas flow rate detecting system, for be based on net
NOx and O in flue gas in lattice method detection SCR reactor inlet flues2First detection of exhaust gas compositions system of concentration is used to be based on net
NOx and O in flue gas in lattice method detection SCR reactor outlet flues2Second detection of exhaust gas compositions system of concentration and for examining
Survey the ammonia flow gauge of ammonia flow in the ammonia input pipe of SCR reactors, wherein the output end of ammonia flow gauge, the first cigarette
The output end of gas velocity detecting system, the output end of the first detection of exhaust gas compositions system and the second detection of exhaust gas compositions system it is defeated
Outlet is connected with the input terminal of computer.
The flue gas flow rate detecting system includes based on flue gas flow rate information in gridding method acquisition SCR reactor inlet flues
Flue gas flow rate multi-point sampling device, the SCR reactor inlet cigarettes for being collected according to flue gas flow rate multi-point sampling device
Flue gas flow rate information calculates the flue gas flow rate Multi point measuring apparatus of flue gas flow rate in SCR reactor inlet flues in road, wherein cigarette
The output end of gas velocity multi-point sampling device is connected with the input terminal of flue gas flow rate Multi point measuring apparatus, and flue gas flow rate multiple spot is surveyed
The output end of amount device is connected with the input terminal of computer.
The first detection of exhaust gas compositions system includes the first Flue Gas Pretreatment Device, the first flue gas analyzer and is based on
Gridding method acquires the first smoke components multi-point sampling device of flue gas in SCR reactor inlet flues, wherein the first smoke components
The first Flue Gas Pretreatment Device of outlet of multi-point sampling device is connected with the entrance of the first flue gas analyzer, the first flue gas point
The output end of analyzer is connected with the input terminal of computer.
The second detection of exhaust gas compositions system includes the second Flue Gas Pretreatment Device, the second flue gas analyzer and is based on
Gridding method acquires the second smoke components multi-point sampling device of flue gas in SCR reactor outlet flues, wherein the second smoke components
The second Flue Gas Pretreatment Device of outlet of multi-point sampling device is connected with the entrance of the second flue gas analyzer, the second flue gas point
The output end of analyzer is connected with the input terminal of computer.
The utility model has the advantages that：
It is described in the utility model to be based on comparing differential technique the escaping of ammonia detection device when specific operation, it is reacted according to SCR
NOx and O in flue gas in flue gas flow rate, SCR reactor inlet flues in device gas approach2Concentration and SCR reactor inlets
NOx and O in flue gas in flue2Concentration calculate SCR reactor actual consumptions for ammonia amount, while according to the ammonia of SCR reactors
In gas input pipe ammonia flow rate calculation SCR reactor theories consumption for ammonia amount, then according to SCR reactor actual consumptions
The total amount of ammonia slip of SCR reactor outlets is calculated for the difference for ammonia amount that ammonia amount and SCR reactor theories consume and average ammonia is escaped
Escape concentration, the accuracy of measurement is higher, while flow and flow velocity are based on grid survey and obtain, thus test precision compared with
It is high.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Wherein, 1 it is ammonia flow gauge, 2 be flue gas flow rate multi-point sampling device, 3 is flue gas flow rate Multi point measuring apparatus, 4
It is the first Flue Gas Pretreatment Device for the first smoke components multi-point sampling device, 5,6 be the first flue gas analyzer, 7 is the second cigarette
Gas ingredient multi-point sampling device, 8 be the second Flue Gas Pretreatment Device, 9 be the second flue gas analyzer, 10 be computer.
Specific implementation mode
The utility model is described in further detail below in conjunction with the accompanying drawings：
It is described in the utility model to include computer 10, be used for based on comparison differential technique the escaping of ammonia detection device with reference to figure 1
The flue gas flow rate detecting system of flue gas flow rate in SCR reactor inlet flues is detected based on gridding method, for being examined based on gridding method
NOx and O in flue gas in survey SCR reactor inlet flues2First detection of exhaust gas compositions system of concentration is examined for being based on gridding method
NOx and O in flue gas in survey SCR reactor outlet flues2Second detection of exhaust gas compositions system of concentration and anti-for detecting SCR
Answer the ammonia flow gauge 1 of ammonia flow in the ammonia input pipe of device, wherein the output end of ammonia flow gauge 1, the first flue gas flow rate
The output end of the output end of detecting system, the output end of the first detection of exhaust gas compositions system and the second detection of exhaust gas compositions system is equal
It is connected with the input terminal of computer 10.
The flue gas flow rate detecting system includes based on flue gas flow rate information in gridding method acquisition SCR reactor inlet flues
Flue gas flow rate multi-point sampling device 2, the SCR reactor inlets for being collected according to flue gas flow rate multi-point sampling device 2
Flue gas flow rate information calculates the flue gas flow rate Multi point measuring apparatus 3 of flue gas flow rate in SCR reactor inlet flues in flue,
In, the output end of flue gas flow rate multi-point sampling device 2 is connected with the input terminal of flue gas flow rate Multi point measuring apparatus 3, flue gas stream
The output end of fast Multi point measuring apparatus 3 is connected with the input terminal of computer 10.
The first detection of exhaust gas compositions system includes the first Flue Gas Pretreatment Device 5, the first flue gas analyzer 6 and base
In the first smoke components multi-point sampling device 4 of flue gas in gridding method acquisition SCR reactor inlet flues, wherein the first flue gas
The first Flue Gas Pretreatment Device of outlet 5 of ingredient multi-point sampling device 4 is connected with the entrance of the first flue gas analyzer 6, the
The output end of one flue gas analyzer 6 is connected with the input terminal of computer 10.
The second detection of exhaust gas compositions system includes the second Flue Gas Pretreatment Device 8, the second flue gas analyzer 9 and base
In the second smoke components multi-point sampling device 7 of flue gas in gridding method acquisition SCR reactor outlet flues, wherein the second flue gas
The second Flue Gas Pretreatment Device of outlet 8 of ingredient multi-point sampling device 7 is connected with the entrance of the second flue gas analyzer 9, the
The output end of two flue gas analyzers 9 is connected with the input terminal of computer 10.
The specific operation process of the utility model is：Flue gas flow rate detecting system detects SCR reactor inlet flues in real time
Interior flue gas flow rate, then the flue gas flow rate in SCR reactor inlet flues is sent in computer 10, the inspection of the first smoke components
Examining system detects in SCR reactor inlet flues NOx and O in flue gas in real time2Concentration, then will be in SCR reactor inlet flues
NOx and O in flue gas2Concentration be sent in computer 10, the second detection of exhaust gas compositions system detects SCR reactor outlets in real time
NOx and O in flue gas in flue2Concentration, then by NOx and O in flue gas in SCR reactor outlet flues2Concentration be sent to calculating
In machine 10, ammonia flow gauge 1 in real time in the ammonia input pipe of detection SCR reactors ammonia flow, and by the ammonia of SCR reactors
The flow of ammonia is sent in computer 10 in gas input pipe, and computer 10 is according to the flue gas stream in SCR reactor inlet flues
NOx and O in flue gas in speed, SCR reactor inlet flues2Concentration and SCR reactor inlet flues in NOx and O in flue gas2's
Concentration calculate SCR reactor actual consumptions for ammonia amount, while according to the flowmeter of ammonia in the ammonia input pipe of SCR reactors
Calculate SCR reactor theories consumption for ammonia amount, then according to SCR reactor actual consumptions for ammonia amount and SCR reactor theories
The difference for ammonia amount of consumption calculates the total amount of ammonia slip of SCR reactor outlets and average ammonia slip concentration.
Claims (4)
1. one kind is based on comparison differential technique the escaping of ammonia detection device, which is characterized in that examined including computer (10), based on gridding method
It surveys the flue gas flow rate detecting system of flue gas flow rate in SCR reactor inlet flues, SCR reactor inlet cigarettes is detected based on gridding method
NOx and O in flue gas in road2First detection of exhaust gas compositions system of concentration is detected based on gridding method in SCR reactor outlet flues
NOx and O in flue gas2Ammonia in second detection of exhaust gas compositions system of concentration and the ammonia input pipe for detecting SCR reactors
The ammonia flow gauge (1) of throughput, wherein the output of the output end of ammonia flow gauge (1), the first flue gas flow rate detecting system
End, the output end of the first detection of exhaust gas compositions system and the second detection of exhaust gas compositions system output end with computer (10)
Input terminal is connected.
2. according to claim 1 based on comparison differential technique the escaping of ammonia detection device, which is characterized in that the flue gas flow rate
Detecting system includes the flue gas flow rate multi-point sampling dress based on flue gas flow rate information in gridding method acquisition SCR reactor inlet flues
Set that (2), flue gas flow rate is believed in the SCR reactor inlet flues for collecting according to flue gas flow rate multi-point sampling device (2)
Breath calculates the flue gas flow rate Multi point measuring apparatus (3) of flue gas flow rate in SCR reactor inlet flues, wherein flue gas flow rate multiple spot
The output end of sampling apparatus (2) is connected with the input terminal of flue gas flow rate Multi point measuring apparatus (3), flue gas flow rate multimetering dress
The output end for setting (3) is connected with the input terminal of computer (10).
3. according to claim 1 based on comparison differential technique the escaping of ammonia detection device, which is characterized in that first flue gas
Composition detection system includes the first Flue Gas Pretreatment Device (5), the first flue gas analyzer (6) and acquires SCR based on gridding method
First smoke components multi-point sampling device (4) of flue gas in reactor inlet flue, wherein the first smoke components multi-point sampling fills
The first Flue Gas Pretreatment Device of outlet (5) for setting (4) is connected with the entrance of the first flue gas analyzer (6), the first flue gas point
The output end of analyzer (6) is connected with the input terminal of computer (10).
4. according to claim 3 based on comparison differential technique the escaping of ammonia detection device, which is characterized in that second flue gas
Composition detection system includes the second Flue Gas Pretreatment Device (8), the second flue gas analyzer (9) and acquires SCR based on gridding method
Second smoke components multi-point sampling device (7) of flue gas in reactor outlet flue, wherein the second smoke components multi-point sampling fills
The second Flue Gas Pretreatment Device of outlet (8) for setting (7) is connected with the entrance of the second flue gas analyzer (9), the second flue gas point
The output end of analyzer (9) is connected with the input terminal of computer (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820453295.1U CN207964786U (en) | 2018-04-02 | 2018-04-02 | Ammonia escape detection device based on comparison difference method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820453295.1U CN207964786U (en) | 2018-04-02 | 2018-04-02 | Ammonia escape detection device based on comparison difference method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490132A (en) * | 2018-04-02 | 2018-09-04 | 华能国际电力股份有限公司 | Device and method for detecting ammonia escape based on comparison difference method |
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2018
- 2018-04-02 CN CN201820453295.1U patent/CN207964786U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490132A (en) * | 2018-04-02 | 2018-09-04 | 华能国际电力股份有限公司 | Device and method for detecting ammonia escape based on comparison difference method |
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