CN107917990A - A kind of SCR denitrating flue gas on-site testing device - Google Patents
A kind of SCR denitrating flue gas on-site testing device Download PDFInfo
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- CN107917990A CN107917990A CN201711222313.1A CN201711222313A CN107917990A CN 107917990 A CN107917990 A CN 107917990A CN 201711222313 A CN201711222313 A CN 201711222313A CN 107917990 A CN107917990 A CN 107917990A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/76—Gas phase processes, e.g. by using aerosols
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8628—Processes characterised by a specific catalyst
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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Abstract
A kind of SCR denitrating flue gas on-site testing device, including reactor 13, the inside of reactor 13 is filled with catalyst, the entrance of the reactor and outlet both ends difference coupled reaction device inlet duct 25 and reactor outlet pipeline 26, the former flue gas import 23 in other end connection scene of the reactor inlet pipeline 25, is sequentially installed with hand-operated valve 1, air-introduced machine 2, flowmeter 3, electric heater 4 plus NO devices 20 plus SO on reactor inlet pipeline 25 from gas inlet 23 to reactor inlet2Device 21 plus NH3Device 22 and static mixer 6, the reactor outlet pipeline 26 connect exhanst gas outlet flue 24；Second air inlet sampled point 15 is set on the flue between reactor inlet pipeline 25 and static mixer 6, outlet sampled point 17 is set on the flue of reactor outlet pipeline 26.The Work condition analogue parameter of the present invention is accurate, and flue gas is drawn from live flue, and smoke components and fluctuation range and field condition are completely the same, make testing result relatively reliable.
Description
Technical field
The present invention relates to a kind of steel plant, garbage burning factory gas denitrifying technology field, and in particular to a kind of SCR flue gases take off
Nitre on-site testing device.
Background technology
NO and NO2The main component in coal-fired flue-gas, NO, which is discharged into air, to be aoxidized, generation chemical property compared with
For stable NO2, be photochemical pollution source, can also form acid rain, environment is caused seriously to pollute.Power industry at present
Denitration technology is more mature, and the improvement of nitrogen oxides is also relatively more early, and the nitrogen oxides of the enterprise such as steel plant, garbage burning factory
Emission control is just in the starting stage, and national standard is just progressively tending to be stringent, by taking steel industry as an example, will carry out most
Newly《Steel sintering, pelletizing industrial air pollution thing discharge standard》In to sintering flue gas NOx emission limit be adjusted to 100mg/
Nm3, with new standard implementation and《Environmental law》Promotion, pollute exceeded enterprise, not only face and fine heavily, or even have can
Limited production, halt production etc. can be faced and seriously punish that therefore, the industry smoke gas treatment such as steel, waste incineration is extremely urgent.
In denitrating flue gas field, SCR is highly developed because of technology, it has also become the denitrating technique of current most mainstream, in electric power row
Industry generally uses.And SCR key technologies are denitrating catalyst, the temperature in use of power industry denitrating catalyst generally exists
320~420 DEG C, and steel（Sintering, coking）Etc. generally only 100~260 DEG C of industry flue gas, such as heat up to flue gas, then
Energy consumption is larger, uneconomical.As environmental protection policy is increasingly severe, there are the good market demand for low-temperature denitration catalyst.Mesh
Preceding smoke gas treatment market has a part low temperature catalyst product, but and " low temperature " truly is not implemented, or periodically need
Regeneration cleaning is carried out to catalyst（Not resistant to sulfur）, it is therefore desirable to find suitable real low-temperature denitration catalyst product.
Since the industry such as steel, waste incineration smoke components are complicated, flue gas has fluctuated big, traditional test in laboratory not
It can meet its requirement.
The content of the invention
To solve the above problems, the present invention provides a kind of SCR denitrating flue gas on-site testing device, solves laboratory catalytic
The problems such as smoke components existing for agent performance detection are single, smoke components fluctuation range is small, experimental scale is small.
The purpose of the present invention is what is realized in the following manner：
A kind of SCR denitrating flue gas on-site testing device, including reactor 13, the inside of reactor 13 is filled with catalyst, described
The entrance of reactor and outlet both ends difference coupled reaction device inlet duct 25 and reactor outlet pipeline 26, the reactor
The former flue gas import 23 in other end connection scene of inlet duct 25, from gas inlet 23 to anti-on reactor inlet pipeline 25
Device entrance is answered to be sequentially installed with hand-operated valve 1, air-introduced machine 2, flowmeter 3, electric heater 4 plus NO devices 20 plus SO2Device 21, add
NH3Device 22 and static mixer 6, the reactor outlet pipeline 26 connect exhanst gas outlet flue 24；Reactor inlet pipeline
Second air inlet sampled point 15 is set on the flue between 25 and static mixer 6, is set on the flue of reactor outlet pipeline 26
Outlet sampled point 17.
Described plus NO devices 20 are the steel cylinder equipped with NO gases plus SO2Device 21 is equipped with SO2The steel cylinder of gas, add
NH3Device 22 is equipped with NH3The steel cylinder of gas, the gas in the steel cylinder enters flue by gas transmission pipeline, described
Gas transmission pipeline is equipped with hand-operated valve and flowmeter.
Described plus SO2Device 21 and plus NH3First air inlet sampled point 14 is set between device 22.
Reactor inlet guide vane 10, reactor middle part guide vane 11 and reactor are equipped with the reactor 13
Outlet guide vanes 12.
The reactor 13 is horizontal welded steel structure container, is internally provided with catalyst supporting structure.
The second spare air inlet sampled point 16 is equipped with the second air inlet sampled point 15, at the outlet sampled point 17
Equipped with spare outlet sampled point 18.
Relative to the prior art, beneficial effects of the present invention are：1st, Work condition analogue parameter is accurate：By flue gas from live flue
Middle extraction, smoke components and fluctuation range and field condition are completely the same, simulate field working conditions well, make testing result more
Add reliable；2nd, experimental scale is big：Equipment exhaust gas volumn is 10 times of test in laboratory exhaust gas volumn or so up to more than 1500Nm3/h；
Detection time is generally 1~3 month, and the test in laboratory time generally within 48h, the testing result of mobile pilot plant is more
With reference value.
Brief description of the drawings
Fig. 1 is using state structure diagram of the present invention.
Wherein 1 is hand-operated valve, and 2 be air-introduced machine, and 3 be flowmeter, and 4 be electric heater, and 5 be thermocouple, and 6 be static mixing
Device, 7 be first layer catalyst, and 8 be second layer catalyst, and 9 be third layer catalyst, and 10 be reactor inlet guide vane, 11
It is guide vane in the middle part of reactor, 12 be reactor outlet guide vane, and 13 be reactor, and 14 be the first air inlet sampled point, 15
It is the second air inlet sampled point, 16 be the second spare air inlet sampled point, and 17 be outlet sampled point, and 18 be spare outlet sampled point, 19
It is flue gas analyzer, 20 be to add NO devices, and 21 be to add SO2Device, 22 be ammonification device of air, 23 be live former flue gas into
Mouthful, 24 be exhanst gas outlet flue, and 25 be reactor inlet pipeline, and 26 be reactor outlet pipeline.
Embodiment
A kind of SCR denitrating flue gas on-site testing device, including reactor 13, the inside of reactor 13 is filled with catalyst, described
The entrance of reactor and outlet both ends difference coupled reaction device inlet duct 25 and reactor outlet pipeline 26, the reactor
The former flue gas import 23 in other end connection scene of inlet duct 25, from gas inlet 23 to anti-on reactor inlet pipeline 25
Device entrance is answered to be sequentially installed with hand-operated valve 1, air-introduced machine 2, flowmeter 3, electric heater 4 plus NO devices plus SO2Device plus NH3Dress
Put and connect exhanst gas outlet flue 24 with static mixer 6, the reactor outlet pipeline 26；Reactor inlet pipeline 25 and static state
Second air inlet sampled point 15 is set on the flue between mixer 6, sets outlet to sample on the flue of reactor outlet pipeline 26
Point 17.
The air-introduced machine adjusts air inducing unit frequency by frequency converter；Electric heater controls temperature by temperature controller.
Described plus NO devices 20 are the steel cylinder equipped with NO gases plus SO2Device 21 is equipped with SO2The steel cylinder of gas, add
NH3Device 22 is equipped with NH3The steel cylinder of gas, the gas in the steel cylinder enters flue by gas transmission pipeline, described
Gas transmission pipeline is equipped with hand-operated valve and flowmeter.
Described plus SO2Device 21 and plus NH3First air inlet sampled point 14 is set between device 22, connects flue gas analyzer
Import smoke components are detected afterwards and add SO2Concentration.
Reactor inlet guide vane 10, reactor middle part guide vane 11 and reactor are equipped with the reactor 13
Outlet guide vanes 12.
The reactor 13 is horizontal welded steel structure container, is internally provided with catalyst supporting structure, can bear inside
Pressure, soot load, catalyst loading and thermal stress etc., reactor are equipped with insulating layer, avoid thermal loss, and reactor is equipped with peace
Fill handling of the mouth to catalyst.
The second spare air inlet sampled point 16 is equipped with the second air inlet sampled point 15, at the outlet sampled point 17
Equipped with spare outlet sampled point 18.
Flue gas inspection equipment choosing Testo-350 Portable smoke analysis instrument, the instrument include the attached dresses such as filtering, water removal
Put, O2, CO, NO, NO can be measured at the same time2、SO2Deng gas content and flue-gas temperature, environment temperature, excess air coefficient etc.
Parameter, high certainty of measurement, response time are short, when which measurement point needs to detect, are just inserted into the measuring probe of flue gas analyzer
In the detection mouth.
The present invention is introduced into the flue gas in live flue gas system by air-introduced machine 2, is pumped into the flue of test device, and pass through
The flowmeter 3 for being arranged in 2 sides after air-introduced machine shows exhaust gas volumn, and air inducing unit frequency is adjusted by frequency converter, until air quantity meets to survey
The design requirement of examination, the air-introduced machine 2 are furnished with water-cooling system, can under 300 DEG C of flue-gas temperatures longtime running；In view of flue gas
The requirement of temperature losses and different catalysts temperature in use in air inducing pipeline, flue gas is controlled using electrically heated mode
Temperature, sets electric heater 4 in flue, and installs thermocouple 5 additional, and the electric heater 4 and thermocouple 5 connect with temperature controller
Connect, desired flue-gas temperature value is pre-set on temperature controller, when temperature exceedes setting value, thermocouple 5 transmits signal to temperature
Instrument is controlled, electric heater stops heating, and when temperature is less than setting value, electric heater 4 starts, and the flue gas first in flue is by electricity
Heater, can improve 0 DEG C~150 DEG C by smoke temperature；This test device consider some detection projects may need to catalyst into
Performance detection under the different operating modes of row, further provided with and add SO2Gas device 21 and plus NO gas devices 20, SO2/ NO gases pass through
SO2Flowmeter on/NO gas device conveyance conduits enters in flue after quantifying, and for purity up to 99.9%, flow can be according to project
Need arbitrarily to adjust between 0.16L/min~1.6L/min；Ammonification device of air 22 passes through through the flow on ammonia conveyance conduit
Enter after meter is quantitative in flue, up to 99.999%, flow can be needed in 0.16L/min~15L/min ammonia purity according to project
Between arbitrarily adjust.Above-mentioned gas, which enter in flue and together enter with flue gas in static mixer 6, to be sufficiently mixed, and is finally mixed
Close gas to enter in SCR reactors, denitration reaction occurs with catalyst, the tail gas after reaction passes through SCR reactor outlet pipelines
It is discharged into exhanst gas outlet flue；The second air inlet is set to sample on flue between reactor inlet pipeline 25 and static mixer 6
Point 15 and the second spare air inlet sampled point 16, set outlet sampled point 17 and spare outlet on the flue of reactor outlet pipeline 26
Sampled point 18, the second air inlet sampled point and outlet sampled point are respectively connected with flue gas analyzer, for being measured
Before into SCR reactors the component of gas and the concentration of gas and enter SCR reactors in the gas after catalyst reaction
The concentration of component and gas, last flue gas analyzer by analyze the second air inlet sampled point 15 and 17 flue gas of outlet sampled point into
Point, finally determine denitration efficiency.
Above-described is only the preferred embodiment of the present invention, it is noted that for those skilled in the art,
Under the premise of general idea of the present invention is not departed from, some changes and improvements can also be made, these should also be considered as the present invention's
Protection domain.
Claims (6)
1. a kind of SCR denitrating flue gas on-site testing device, including reactor（13）, reactor (13) is internal to be filled with catalyst,
The entrance of the reactor and outlet both ends difference coupled reaction device inlet duct (25) and reactor outlet pipeline (26), its
It is characterized in that：The former flue gas import (23) in other end connection scene of the reactor inlet pipeline (25), reactor enters
On mouth pipeline (25) hand-operated valve (1), air-introduced machine (2), flowmeter are sequentially installed with from gas inlet (23) to reactor inlet
（3）, electric heater（4）Plus NO devices（20）Plus SO2Device（21）Plus NH3Device（22）And static mixer（6）, it is described anti-
Device outlet conduit (26) is answered to connect exhanst gas outlet flue (24)；Reactor inlet pipeline (25) and static mixer（6）Between
Second air inlet sampled point is set on flue（15）, reactor outlet pipeline（26）Flue on set outlet sampled point（17）.
2. SCR denitrating flue gas on-site testing device as claimed in claim 1, it is characterised in that：Described plus NO devices (20)
For the steel cylinder equipped with NO gases plus SO2Device (21) is equipped with SO2The steel cylinder of gas plus NH3Device (22) is equipped with NH3Gas
Steel cylinder, the gas in the steel cylinder enters flue by gas transmission pipeline, and the gas transmission pipeline is equipped with hand
Dynamic valve and flowmeter.
3. SCR denitrating flue gas on-site testing device as claimed in claim 1, it is characterised in that：Described plus SO2Device (21)
With add NH3First air inlet sampled point (14) is set between device (22).
4. SCR denitrating flue gas on-site testing device as claimed in claim 1, it is characterised in that：It is equipped with reactor (13) anti-
Answer device inlet guide vance (10), reactor middle part guide vane (11) and reactor outlet guide vane (12).
5. SCR denitrating flue gas on-site testing device as claimed in claim 1, it is characterised in that：The reactor (13) is
Horizontal welded steel structure container, is internally provided with catalyst supporting structure.
6. SCR denitrating flue gas on-site testing device as claimed in claim 1, it is characterised in that：The second air inlet sampling
Point（15）Place is equipped with the second spare air inlet sampled point（16）, the outlet sampled point（17）Place is equipped with spare outlet sampled point
（18）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711222313.1A CN107917990A (en) | 2017-11-29 | 2017-11-29 | A kind of SCR denitrating flue gas on-site testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711222313.1A CN107917990A (en) | 2017-11-29 | 2017-11-29 | A kind of SCR denitrating flue gas on-site testing device |
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| Publication Number | Publication Date |
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| CN107917990A true CN107917990A (en) | 2018-04-17 |
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| CN201711222313.1A Pending CN107917990A (en) | 2017-11-29 | 2017-11-29 | A kind of SCR denitrating flue gas on-site testing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109884241A (en) * | 2019-03-05 | 2019-06-14 | 华电电力科学研究院有限公司 | A kind of SCR denitration simulation reaction device and analogy method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101732989A (en) * | 2010-01-08 | 2010-06-16 | 东南大学 | Selective catalytic reduction de-nitrification reactor of combined flue |
| CN202533420U (en) * | 2012-02-28 | 2012-11-14 | 广东电网公司电力科学研究院 | Evaluation system for testing performance of selective catalytic reduction (SCR) denitration catalyst |
| CN203705415U (en) * | 2014-02-27 | 2014-07-09 | 胡运兴 | Evaluation device for denitration catalyst |
| CN106596832A (en) * | 2016-06-02 | 2017-04-26 | 华纳创新（北京）科技有限公司 | SCR denitration catalyst evaluation device |
| CN206483343U (en) * | 2017-02-27 | 2017-09-12 | 国网安徽省电力公司电力科学研究院 | Ammonia adaptive congestion control algorithm device is sprayed in a kind of denitration |
-
2017
- 2017-11-29 CN CN201711222313.1A patent/CN107917990A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101732989A (en) * | 2010-01-08 | 2010-06-16 | 东南大学 | Selective catalytic reduction de-nitrification reactor of combined flue |
| CN202533420U (en) * | 2012-02-28 | 2012-11-14 | 广东电网公司电力科学研究院 | Evaluation system for testing performance of selective catalytic reduction (SCR) denitration catalyst |
| CN203705415U (en) * | 2014-02-27 | 2014-07-09 | 胡运兴 | Evaluation device for denitration catalyst |
| CN106596832A (en) * | 2016-06-02 | 2017-04-26 | 华纳创新（北京）科技有限公司 | SCR denitration catalyst evaluation device |
| CN206483343U (en) * | 2017-02-27 | 2017-09-12 | 国网安徽省电力公司电力科学研究院 | Ammonia adaptive congestion control algorithm device is sprayed in a kind of denitration |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109884241A (en) * | 2019-03-05 | 2019-06-14 | 华电电力科学研究院有限公司 | A kind of SCR denitration simulation reaction device and analogy method |
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Application publication date: 20180417 |