CN209069904U - Nitrogen oxides in effluent detection system - Google Patents
Nitrogen oxides in effluent detection system Download PDFInfo
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- CN209069904U CN209069904U CN201821894474.5U CN201821894474U CN209069904U CN 209069904 U CN209069904 U CN 209069904U CN 201821894474 U CN201821894474 U CN 201821894474U CN 209069904 U CN209069904 U CN 209069904U
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Abstract
Nitrogen oxides in effluent detection system, including detection device and the first smoke-intake pipe, detection device one end is connected with the first smoke-intake pipe, the first smoke-intake pipe other end is connected with the exhanst gas outlet of denitrating tower, it further include second smoke-intake pipe and vacuum evacuation device, one end of second smoke-intake pipe is connected with detection device, the other end of second smoke-intake pipe is connected with the gas inlet of denitrating tower, the first valve is provided in first smoke-intake pipe, the second valve is provided in second smoke-intake pipe, vacuum evacuation device is connected with the first smoke-intake pipe and the second smoke-intake pipe respectively, first valve and the second valve alternately open and close.Every time before detection, we are by vacuum device by the evacuating air in corresponding smoke-intake pipe, so the flue gas remained in smoke-intake pipe road before avoiding when one-shot measurement is for the influence that measures next time.It is connected to simultaneously by detection device in different smoke inlets, we can be substantially reduced with the nitrous oxides concentration at a measuring device detection two, cost.
Description
Technical field
The present invention relates to detection technique fields, the more particularly detection device of nitrogen oxides.
Background technique
Nitrogen oxides (nitrogen oxides) includes multiple compounds, such as nitrous oxide (N2O), nitric oxide
(NO), nitrogen dioxide (NO2), nitrogen trioxide (N2O3), dinitrogen tetroxide (N2O4) and dinitrogen pentoxide (N2O5) etc..It removes
Other than nitrogen dioxide, other nitrogen oxides are extremely unstable, meet light, wet or thermal change into nitrogen dioxide and nitric oxide, an oxidation
Nitrogen becomes nitrogen dioxide again.Therefore, what is contacted in occupational environment is that several admixture of gas are frequently referred to the smoke of gunpowder (gas), predominantly
Nitric oxide and nitrogen dioxide, and based on nitrogen dioxide.Nitrogen oxides all has different degrees of toxicity.Therefore flue gas is being arranged
It requires before entering atmosphere by denitration process.
Whether the gas after denitration meets discharge standard actually, it is also necessary to which device detects after testing, common detection
Mode is all sample detection, exactly the gas for needing to detect is pumped into detection device every one end time, then detection device
The concentration value of nitrogen oxides is obtained by analytical calculation.
It is exactly that the flue gas sample of last period may stay in the smoke-intake pipe road of detection device that this mode, which has a defect,
Interior, this results in result when detection to be affected.
Another question is exactly, after we generally require nitrous oxides concentration and fume treatment before detecting fume treatment
Nitrous oxides concentration, pervious mode is that the inlet and outlet of whole denitrating tower respectively installs a detection device, due to detection fill
The expense set is not low, also considerably increases cost in this way.
Summary of the invention
The present invention aiming at the shortcomings in the prior art, provides the detection system of nitrogen oxides in effluent, measurement it is accurate and
Substantially reduce cost.
In order to solve the above-mentioned technical problem, the present invention is addressed by following technical proposals: nitrogen oxides in effluent inspection
Examining system, including detection device and the first smoke-intake pipe, described detection device one end are connected with the first smoke-intake pipe, and described first into cigarette
The pipe other end is connected with the exhanst gas outlet of denitrating tower, further includes second smoke-intake pipe and vacuum evacuation device, and described second into cigarette
One end of pipe is connected with detection device, and the other end of second smoke-intake pipe is connected with the gas inlet of the denitrating tower, described
It is provided with the first valve in first smoke-intake pipe, the second valve, the vacuum evacuation device difference are provided in second smoke-intake pipe
It is connected with first smoke-intake pipe and second smoke-intake pipe, first valve and second valve alternately beat on and off
It closes.Before use, the first valve and the second valve are all closed, then vacuum evacuation device will be complete in the first smoke-intake pipe and the second smoke-intake pipe
It vacuumizes entirely, when needing to detect the amount of nitrogen oxides before purifying in flue gas, then the first valve in the first smoke-intake pipe is kept to close
It closing, opens simultaneously the second valve in the second smoke-intake pipe, the flue gas at smoke inlet enters under the action of negative pressure in the second smoke-intake pipe,
Then detection device completes detection.Before detection, the second smoke-intake pipe is in vacuum state, greatly avoids former in smoke-intake pipe
There is influence of the air to measurement.When needing to detect the amount of nitrogen oxides after purifying in flue gas, the second valve is first closed, then will
Then smoke evacuator in second smoke-intake pipe opens the first valve, the flue gas at smoke inlet enter under the action of negative pressure first into
In smoke pipe, then detection device completes detection.And so on, we can be achieved with the real-time detection to denitrating tower denitration effect.
Before detecting every time, we are by vacuum device by the evacuating air in corresponding smoke-intake pipe, so primary before avoiding
The flue gas remained in smoke-intake pipe road when measurement is for the influence that measures next time.Pass through detection device simultaneously in different into cigarette
Mouth connection, we can be substantially reduced with the nitrous oxides concentration at a measuring device detection two, cost.
In above-mentioned technical proposal, it is preferred that the vacuum evacuation device includes vacuum pump and the first exhaust tube and the second pumping
Pipe, first exhaust tube are connected with first smoke-intake pipe, and second exhaust tube is connected with second smoke-intake pipe.
In above-mentioned technical proposal, it is preferred that third valve is provided in first exhaust tube, in second exhaust tube
It is provided with the 4th valve, first valve and third valve alternately open and close, second valve and the 4th valve
Door alternately opens and closes.
In above-mentioned technical proposal, it is preferred that the gas inlet phase of the gas outlet of the vacuum evacuation device and the denitrating tower
Even.
Compared with prior art, the beneficial effects of the present invention are: before use, the first valve and the second valve are all closed, so
Vacuum evacuation device will vacuumize completely in the first smoke-intake pipe and the second smoke-intake pipe afterwards, need to detect the nitrogen oxidation before purifying in flue gas
When object content, then keeps the first valve in the first smoke-intake pipe to close, the second valve in the second smoke-intake pipe is opened simultaneously, into cigarette
Flue gas at mouthful enters under the action of negative pressure in the second smoke-intake pipe, and then detection device completes detection.Due to detection before, second into
Smoke pipe is in vacuum state, greatly avoids influence of original air to measurement in smoke-intake pipe.Need to detect purification after flue gas
In amount of nitrogen oxides when, first close the second valve, then by the smoke evacuator in the second smoke-intake pipe, then open the first valve
, the flue gas at smoke inlet enters under the action of negative pressure in the first smoke-intake pipe, and then detection device completes detection.And so on,
We can be achieved with the real-time detection to denitrating tower denitration effect.Before detecting every time, we are by vacuum device by phase
The evacuating air in smoke-intake pipe answered remains in the flue gas in smoke-intake pipe road for next time when so avoiding preceding one-shot measurement
The influence of measurement.It is connected to simultaneously by detection device in different smoke inlets, we can be at a measuring device detection two
Nitrous oxides concentration, cost substantially reduces.
Detailed description of the invention
Fig. 1 is schematic diagram of the invention.
Specific embodiment
Present invention is further described in detail with attached drawing With reference to embodiment.
As shown in Figure 1, nitrogen oxides in effluent detection system, including detection device 2 and the first smoke-intake pipe 21, the detection
2 one end of device is connected with the first smoke-intake pipe 21, and 21 other end of the first smoke-intake pipe is connected with the exhanst gas outlet of denitrating tower 1, also
Including second smoke-intake pipe 22 and vacuum evacuation device 3, one end of second smoke-intake pipe 22 is connected with detection device 2, described
The other end of second smoke-intake pipe 22 is connected with the gas inlet of the denitrating tower 1, is provided with first in first smoke-intake pipe 21
Valve 211, is provided with the second valve 221 in second smoke-intake pipe 22, and the vacuum evacuation device 3 is respectively with described first into cigarette
Pipe 21 is connected with second smoke-intake pipe 22, and first valve 21 and second valve 22 alternately open and close.
The vacuum evacuation device 3 includes vacuum pump 3a and the first exhaust tube 31 and the second exhaust tube 32, first pumping
Pipe 31 is connected with first smoke-intake pipe 21, and second exhaust tube 32 is connected with second smoke-intake pipe 22.
It is provided with third valve 311 in first exhaust tube 31, is provided with the 4th valve in second exhaust tube 32
321, first valve 211 and third valve 311 alternately open and close, second valve 221 and the 4th valve
321 alternately open and close.Vacuum evacuation device is realized to difference by the opening and closing of third valve and the 4th valve into cigarette
Pipe vacuumizes.
The gas outlet 33 of the vacuum evacuation device 3 is connected with the gas inlet of the denitrating tower 1.Vacuumize the first smoke-intake pipe
When with gas in the second smoke-intake pipe, if pollution can be generated by being expelled directly out, by these gases be drained into denitration tower flue gas into
At mouthful, primary purification is carried out, can be polluted to avoid to air.
Before use, the first valve and the second valve are all closed, then vacuum evacuation device is by the first smoke-intake pipe and second into cigarette
It is vacuumized completely in pipe, when needing to detect the amount of nitrogen oxides before purifying in flue gas, then keeps first in the first smoke-intake pipe
Valve is closed, and opens simultaneously the second valve in the second smoke-intake pipe, the flue gas at smoke inlet enter under the action of negative pressure second into
In smoke pipe, then detection device completes detection.Due to detection before, the second smoke-intake pipe is in vacuum state, greatly avoid into
Influence of original air to measurement in smoke pipe.When needing to detect the amount of nitrogen oxides after purifying in flue gas, the second valve is first closed
Door, then by the smoke evacuator in the second smoke-intake pipe, then open the first valve, the flue gas at smoke inlet under the action of negative pressure into
Enter in the first smoke-intake pipe, then detection device completes detection.And so on, we can be achieved with the reality to denitrating tower denitration effect
When detect.Before detecting every time, we are by vacuum device by the evacuating air in corresponding smoke-intake pipe, so avoiding
The flue gas remained in smoke-intake pipe road when preceding one-shot measurement is for the influence that measures next time.Simultaneously by detection device in difference
Smoke inlet connection, we can detect the nitrous oxides concentration at two with measuring device, and cost substantially reduce.
Claims (4)
1. nitrogen oxides in effluent detection system, including detection device and the first smoke-intake pipe, described detection device one end and first
Smoke-intake pipe is connected, and the first smoke-intake pipe other end is connected with the exhanst gas outlet of denitrating tower, it is characterised in that: further includes one piece the
One end of two smoke-intake pipes and vacuum evacuation device, second smoke-intake pipe is connected with detection device, second smoke-intake pipe it is another
End is connected with the gas inlet of the denitrating tower, is provided with the first valve in first smoke-intake pipe, in second smoke-intake pipe
It is provided with the second valve, the vacuum evacuation device is connected with first smoke-intake pipe and second smoke-intake pipe respectively, and described
One valve and second valve alternately open and close.
2. nitrogen oxides in effluent detection system according to claim 1, it is characterised in that: the vacuum evacuation device includes
Vacuum pump and the first exhaust tube and the second exhaust tube, first exhaust tube are connected with first smoke-intake pipe, and described second takes out
Tracheae is connected with second smoke-intake pipe.
3. nitrogen oxides in effluent detection system according to claim 2, it is characterised in that: set in first exhaust tube
Be equipped with third valve, be provided with the 4th valve in second exhaust tube, first valve and third valve alternately open and
It closes, second valve and the 4th valve alternately open and close.
4. nitrogen oxides in effluent detection system according to claim 2, it is characterised in that: the vacuum evacuation device goes out
Port is connected with the gas inlet of the denitrating tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821894474.5U CN209069904U (en) | 2018-11-17 | 2018-11-17 | Nitrogen oxides in effluent detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821894474.5U CN209069904U (en) | 2018-11-17 | 2018-11-17 | Nitrogen oxides in effluent detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209069904U true CN209069904U (en) | 2019-07-05 |
Family
ID=67099428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821894474.5U Active CN209069904U (en) | 2018-11-17 | 2018-11-17 | Nitrogen oxides in effluent detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209069904U (en) |
-
2018
- 2018-11-17 CN CN201821894474.5U patent/CN209069904U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Enqiang Inventor after: Ding Mingguang Inventor before: Zhu Zhenghong Inventor before: Wang Enqiang Inventor before: Ding Mingguang |
|
| CB03 | Change of inventor or designer information | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: NOx detection system in flue gas Effective date of registration: 20220624 Granted publication date: 20190705 Pledgee: Industrial Bank Co.,Ltd. Shanghai Shizhong sub branch Pledgor: MOLWAY ENVIRONMENTAL SCIENCE & TECHNOLOGY Co.,Ltd. Registration number: Y2022310000087 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230504 Granted publication date: 20190705 Pledgee: Industrial Bank Co.,Ltd. Shanghai Shizhong sub branch Pledgor: MOLWAY ENVIRONMENTAL SCIENCE & TECHNOLOGY Co.,Ltd. Registration number: Y2022310000087 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |