CN214914595U - Self-cleaning type waste gas sampling pretreatment device - Google Patents
Self-cleaning type waste gas sampling pretreatment device Download PDFInfo
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- CN214914595U CN214914595U CN202120712747.5U CN202120712747U CN214914595U CN 214914595 U CN214914595 U CN 214914595U CN 202120712747 U CN202120712747 U CN 202120712747U CN 214914595 U CN214914595 U CN 214914595U
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- waste gas
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- gas sampling
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- dryer
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- 239000002912 waste gas Substances 0.000 title claims abstract description 40
- 238000004140 cleaning Methods 0.000 title claims abstract description 35
- 238000005070 sampling Methods 0.000 title claims abstract description 35
- 239000000428 dust Substances 0.000 claims abstract description 82
- 239000007789 gas Substances 0.000 claims abstract description 36
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 239000000741 silica gel Substances 0.000 claims abstract description 12
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000012510 hollow fiber Substances 0.000 claims abstract description 9
- 239000012528 membrane Substances 0.000 claims abstract description 9
- 238000012545 processing Methods 0.000 claims abstract description 5
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims description 12
- 238000005192 partition Methods 0.000 claims description 6
- 239000011229 interlayer Substances 0.000 claims description 5
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical class O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000008602 contraction Effects 0.000 description 6
- 239000003344 environmental pollutant Substances 0.000 description 5
- 231100000719 pollutant Toxicity 0.000 description 5
- 238000011010 flushing procedure Methods 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 208000033748 Device issues Diseases 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000010981 drying operation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model provides a processing apparatus before automatically cleaning formula waste gas sampling, include: a primary dust collector; a heat exchanger; a dryer in which a silica gel plate is installed; the air inlet in the precise dust remover is communicated with the air outlet of the dryer through an air transmission pipeline, and a hollow fiber membrane component is arranged in the precise dust remover; the gas transmission pipeline is provided with an exhaust branch pipe, a first valve is arranged on the gas transmission pipeline positioned at the upstream of the exhaust branch pipe, and a second valve is arranged on the exhaust branch pipe; and the air outlet of the precise dust remover is communicated with a backflushing pipeline, and a backflushing air pump is installed on the backflushing pipeline. The self-cleaning waste gas sampling pretreatment device is used for pretreatment of high-temperature, high-dust and high-humidity waste gas, so that the temperature, the concentration and the humidity of the waste gas can be obviously reduced, the use safety of a subsequent sampling detection instrument is improved, and the accuracy and the stability of instrument data are guaranteed.
Description
Technical Field
The utility model belongs to the environmental monitoring field, concretely relates to processing apparatus before automatically cleaning formula waste gas sampling.
Background
When people use fossil fuel, the exhaust gas containing pollutants such as carbon monoxide, sulfur dioxide, nitrogen oxide, heavy metal and the like is inevitably discharged, and the pollutants in the exhaust gas are discharged into the atmosphere, so that the environment is badly influenced. In order to know the composition and content of each pollutant in the exhaust gas, the exhaust gas is generally sampled and detected by using an instrument. In addition, in order to ensure the instantaneity of the detection result, an operator is required to carry a sampling detection instrument to complete sampling detection work on the exhaust emission site in many occasions.
However, in the case of high-temperature, high-dust and high-humidity exhaust gas, the instrument is often greatly affected during sampling and detection. The temperature of the waste gas can reach 400-800 ℃ usually, and the concentration of the particulate matters can reach 20g/m3In addition, the exhaust gas also contains supersaturated water vapor. Therefore, when the exhaust gas is rapidly detected by using an electrochemical or photochemical method, the probe of the instrument is easily polluted by the attachment of particles in the exhaust gas or influenced by conditions such as humidity, high temperature and the like, so that the final detection result is inaccurate, and the accuracy of the detection result is influenced. And the sampling detection is carried out under the severe condition for a long time, so that the damage of the instrument is often caused, and the instrument is reduced.
In this case, on the one hand, it is an urgent problem to accurately detect the above-mentioned high-temperature, high-dust and high-humidity exhaust gas pollutants because of the absence of the pretreatment apparatus. On the other hand, even if the pretreatment device is used, it is a problem that the art has not yet solved how to realize effective treatment and improve the operability of a small-sized and portable device applied to the pretreatment for sample detection, and to realize the cleaning and maintenance of the device as simply as possible.
SUMMERY OF THE UTILITY MODEL
The utility model provides a be difficult to realize the technical problem of accurate detection when prior art handles to high temperature, high dirt, high wet exhaust gas pollutant, and then provide one kind can effectively handle waste gas, and be convenient for clean and the preceding processing apparatus of automatically cleaning formula waste gas sampling who maintains.
The utility model provides a technical scheme that above-mentioned technical problem adopted does:
a self-cleaning type waste gas sampling pretreatment device comprises: a primary dust collector; the heat exchanger is communicated with the air outlet of the primary dust remover; a dryer in which a silica gel plate is installed; the air inlet in the precise dust remover is communicated with the air outlet of the dryer through an air transmission pipeline, and a hollow fiber membrane component is arranged in the precise dust remover; the gas transmission pipeline is provided with an exhaust branch pipe, a first valve is arranged on the gas transmission pipeline positioned at the upstream of the exhaust branch pipe, and a second valve is arranged on the exhaust branch pipe; and the air outlet of the precise dust remover is communicated with a backflushing pipeline, and a backflushing air pump is installed on the backflushing pipeline.
The primary dust remover adopts a cyclone dust remover, the top of the cyclone dust remover is provided with an air outlet, and the bottom of the cyclone dust remover is provided with a detachable dust box.
A cooling interlayer is arranged on a shell of the heat exchanger, four cavities are sequentially arranged in the heat exchanger along the flowing direction of waste gas, and every two adjacent cavities are communicated through an air hole.
The bottom of the cavity is set to be a contraction part, the bottom end of the contraction part is communicated with a drainage pipeline, and a valve is installed on the drainage pipeline.
And air holes in the heat exchanger along the flowing direction of the waste gas are arranged in a staggered mode in sequence.
Two compartments are arranged in the dryer and are arranged in a horizontal direction; the two compartments are connected through a partition plate, and an air hole is formed in the partition plate; a silicone plate is mounted within each of the compartments.
The bottom housing of the dryer is removably mounted to the side wall of the dryer.
The bottom of the precise dust collector is provided with a detachable dust box.
And a pressure measuring instrument is arranged at the air outlet of the precise dust remover.
The utility model discloses in automatically cleaning formula waste gas sampling pretreatment device, the advantage lies in:
the utility model discloses in automatically cleaning formula waste gas sampling preceding processing apparatus, primary dust remover, heat exchanger, desicator, accurate dust remover have set gradually. The primary dust remover preferably adopts a cyclone dust remover, and the cyclone dust remover can remove large particulate matters in the waste gas and is easy to maintain. The gas-solid separation of the waste gas is realized after the waste gas passes through the cyclone dust collector, the gas is discharged from the top, and the solid sinks to the bottom area. The lower part of the cyclone dust collector is connected with a detachable dust box, so that dust can be conveniently removed regularly. The shell of the heat exchanger is provided with a cooling interlayer, and the waste gas is cooled by air cooling or water cooling. The utility model provides a mode setting that the desicator adopted built-in silica gel board has small, the efficient advantage of dehydration, the bottom of desicator can be dismantled, is convenient for change the silica gel board after long-term the use. A hollow fiber membrane component is arranged in the precise dust collector, and preferably a hydrophilic hollow fiber membrane made of PVDF (polyvinylidene fluoride) is adopted. The device can further realize deep dust removal, and the device is characterized in that an exhaust branch pipe is arranged on a gas transmission pipeline between the precise dust remover and the dryer, a first valve is arranged on the gas transmission pipeline positioned at the upstream of the exhaust branch pipe, and a second valve is arranged on the exhaust branch pipe; and meanwhile, a bidirectional air pump is arranged at an air outlet of the precise dust remover. Under the normal use state, the second valve on the exhaust branch pipe is closed; when the back flushing cleaning is needed after long-term operation, the first valve can be closed, the second valve is opened, and the back flushing air pump is started to reversely convey air, so that the back flushing of the hollow fiber membrane component is completed. In a preferred embodiment, a pressure gauge is installed at the air outlet of the precision dust collector, and the back-flushing operation is performed when the detection value of the pressure gauge reaches 700 pa.
The utility model discloses in self-cleaning formula waste gas sampling pretreatment device for high temperature, high dirt, high humid exhaust gas pretreatment can make exhaust gas temperature reduce to 100 and give other care to 150 ℃, smoke and dust particulate matter concentration reduces to 0.005mg/m3The humidity is significantly reduced. The use safety of the subsequent sampling detection instrument is greatly improved, and the accuracy and the stability of instrument data are guaranteed.
In order to make the technical scheme of automatically cleaning formula waste gas sampling pretreatment device clear more and understand, below combine specific figure and specific embodiment, right the utility model discloses carry out further explanation.
Drawings
Fig. 1 is a schematic view of a system of a self-cleaning waste gas sampling pretreatment device according to the present invention;
fig. 2 is a cross-sectional view of a heat exchanger of a self-cleaning waste gas sampling pretreatment device according to the present invention;
fig. 3 is a cross-sectional view of a dryer of the self-cleaning type waste gas sampling pretreatment apparatus according to the present invention;
fig. 4 is a sectional view of a precision dust collector of the self-cleaning type waste gas sampling pretreatment device of the present invention;
wherein the reference numerals are:
1-a primary dust remover; 11-dust box of primary dust collector; 2-a heat exchanger; 21-a drainage pipeline; 23. 24, 25-air holes between the heat exchanger chambers; 3-a dryer; 31. 32-silica gel plate; 33-a vent hole; 4-a precise dust remover; 41-dust box of the precise dust collector; 42-hollow fiber membrane module; 5-a first valve; 6-a second valve; 7-an air extraction valve; 8-air pumping pump; 9-backflushing the air pump; 10-pressure tester.
Detailed Description
The embodiment provides a self-cleaning type waste gas sampling pretreatment device, as shown in fig. 1, the self-cleaning type waste gas sampling pretreatment device comprises a primary dust remover 1, a heat exchanger 2, a dryer 3 and a precise dust remover 4 which are arranged in sequence.
The primary dust remover 1 adopts a cyclone dust remover, an air outlet is formed in the top of the cyclone dust remover, and a detachable dust box 11 is arranged at the bottom of the cyclone dust remover.
The air inlet of the heat exchanger 2 is communicated with the air outlet of the cyclone dust collector, a cooling interlayer is arranged on the shell of the heat exchanger 2, the heat exchanger 2 in the embodiment adopts a water cooling mode, the cooling interlayer is communicated with a cooling water tank through a circulating pipeline, the circulating pipeline is provided with a circulating water pump, the circulation of cooling water is realized, and as an optional embodiment, the cooling can also be realized in an air cooling mode. As shown in fig. 2, four chambers are sequentially arranged in the heat exchanger 2 along the flow direction of the exhaust gas, and every two adjacent chambers are communicated with each other through air holes 23, 24 and 25. And air holes in the heat exchanger 2 along the flowing direction of the waste gas are arranged in a staggered mode in sequence. So that the gas flows in a baffled manner in the four chambers. The bottom of each chamber is provided with a contraction part, the bottom end of the contraction part is communicated with a drainage pipeline 21 through a water outlet and used for discharging condensed water generated in the cooling process, and a valve is arranged on the drainage pipeline 21.
An air inlet of the dryer 3 is communicated with an air outlet of the heat exchanger 2, and as shown in fig. 3, a silica gel plate is installed in the dryer 3; in the present embodiment, two compartments are provided in the dryer 3, and the two compartments are arranged in a horizontal direction; the two compartments are connected through a partition plate, and a vent hole 33 is formed in the partition plate; and silica gel plates 31 and 32 provided with air holes are respectively arranged in the two compartments. The bottom shell of the dryer 3 is detachably mounted on the side wall of the dryer 3. When the silica gel plate is invalid after long-term use, the bottom shell can be detached, and the silica gel plate is taken out for replacement.
An air inlet in the precise dust collector 4 is communicated with an air outlet of the dryer 3 through an air transmission pipeline, and as shown in fig. 4, a hollow fiber membrane component 42 is arranged in the precise dust collector 4; the gas transmission pipeline is provided with an exhaust branch pipe, a first valve 5 is arranged on the gas transmission pipeline positioned at the upstream of the exhaust branch pipe, and a second valve 6 is arranged on the exhaust branch pipe; the gas outlet and the exhaust manifold intercommunication of accurate dust remover 4, last aspiration pump and the extraction valve 7 of installing of exhaust manifold, on the exhaust manifold and be located the upper reaches of aspiration pump and extraction valve 7 still are provided with a branch pipe as the recoil pipeline install recoil air pump 9 on the recoil pipeline. The bottom of the precision dust collector 4 is also provided with a contraction part, and the bottom end of the contraction part is provided with a detachable dust box 41. In the preferred embodiment, a pressure measuring instrument 10 is further installed at the air outlet of the precision dust collector 4.
The working process of the self-cleaning waste gas sampling pretreatment device in the embodiment is as follows:
when the cyclone dust collector is used, the air inlet of the cyclone dust collector is communicated with an exhaust gas exhaust pipeline. In the initial state, the suction valve 7 and the first valve 5 are in an open state, and the second valve 6 is in a closed state. At the moment, the air pump is started to pump air, waste gas enters the cyclone dust collector to finish primary dust removal, and the treated gas is discharged from the gas outlet of the cyclone layer dust collector to enter the heat exchanger 2 to finish cooling operation. The gas discharged from the heat exchanger 2 further enters a dryer 3, and in the dryer 3, when the gas passes through the silica gel plate, the silica gel plate adsorbs the water vapor in the waste gas, so that the drying operation is completed. The dried gas enters a precise dust remover 4 to further finish deep dust removal. When the pressure measuring instrument 10 is in fact, when the vacuum degree in the precise dust remover 4 reaches 700pa, the hydrophilic hollow fiber membrane is proved to be seriously blocked, at the moment, the air pumping pump 8 is closed, the air pumping valve 7 and the first valve 5 are closed simultaneously, the air pumping valve 7 is closed, the second valve 6 is opened, the recoil air pump 9 is opened, the reverse purging is carried out, the cleaning operation can be completed, and the purged air box, the dust of which falls into the bottom of the precise dust remover 4, can be taken out for cleaning.
Also as a preferred embodiment, the self-cleaning type waste gas sampling pretreatment device in the embodiment can also realize automatic cleaning, in this case, each valve adopts an electromagnetic valve, a pressure sensor is installed in the precise dust collector 4, a control device is added, the control device is connected with the pressure sensor, the first valve 5, the second valve 6, the air suction valve 7, the air suction pump 8 and the recoil air pump 9, meanwhile, the control device receives pressure information data transmitted by the pressure sensor, and when the pressure is detected to be greater than a threshold value, the control device issues an instruction to realize the action of each component, thereby completing the self-cleaning work.
The primary dust collector 1, the heat exchanger 2, the dryer 3 and the precision dust collector 4 in the self-cleaning type waste gas sampling pretreatment device described in the present embodiment are connected by pipes, and as a preferred embodiment, detachable pipes can be selected for connection, thereby further improving the portability of the device.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the claims.
Claims (9)
1. The utility model provides a processing apparatus before self-cleaning formula waste gas sampling which characterized in that includes:
a primary dust collector;
the heat exchanger is communicated with the air outlet of the primary dust remover;
a dryer in which a silica gel plate is installed;
the air inlet in the precise dust remover is communicated with the air outlet of the dryer through an air transmission pipeline, and a hollow fiber membrane component is arranged in the precise dust remover;
the gas transmission pipeline is provided with an exhaust branch pipe, a first valve is arranged on the gas transmission pipeline positioned at the upstream of the exhaust branch pipe, and a second valve is arranged on the exhaust branch pipe;
and the air outlet of the precise dust remover is communicated with a backflushing pipeline, and a backflushing air pump is installed on the backflushing pipeline.
2. The self-cleaning type waste gas sampling pretreatment device of claim 1, wherein the primary dust collector is a cyclone dust collector, an air outlet is formed in the top of the cyclone dust collector, and a detachable dust box is arranged at the bottom of the cyclone dust collector.
3. The self-cleaning type waste gas sampling pretreatment device according to claim 2, wherein a cooling interlayer is arranged on a shell of the heat exchanger, four chambers are sequentially arranged in the heat exchanger along the flow direction of waste gas, and every two adjacent chambers are communicated through an air hole.
4. The self-cleaning type exhaust gas sampling pretreatment device according to claim 3, wherein the bottom of the chamber is provided with a constriction, the bottom end of the constriction is communicated with a drainage pipeline, and a valve is mounted on the drainage pipeline.
5. The self-cleaning type waste gas sampling pretreatment device according to claim 3, wherein air holes in the heat exchanger along the flow direction of waste gas are arranged in a staggered manner in sequence.
6. The self-cleaning type exhaust gas sampling pretreatment device according to claim 1, 2, 3 or 4, wherein two compartments are arranged in the dryer, and the two compartments are arranged in a horizontal direction; the two compartments are connected through a partition plate, and an air hole is formed in the partition plate; a silicone plate is mounted within each of the compartments.
7. The self-cleaning exhaust gas sampling pretreatment apparatus of claim 5, wherein the bottom housing of the dryer is removably mounted to a side wall of the dryer.
8. The self-cleaning type waste gas sampling pretreatment device according to claim 1, wherein a detachable dust box is installed at the bottom of the fine dust collector.
9. The self-cleaning type exhaust gas sampling pretreatment apparatus according to claim 8, wherein a pressure gauge is installed at an air outlet of the fine dust collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120712747.5U CN214914595U (en) | 2021-04-08 | 2021-04-08 | Self-cleaning type waste gas sampling pretreatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120712747.5U CN214914595U (en) | 2021-04-08 | 2021-04-08 | Self-cleaning type waste gas sampling pretreatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214914595U true CN214914595U (en) | 2021-11-30 |
Family
ID=79044139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120712747.5U Expired - Fee Related CN214914595U (en) | 2021-04-08 | 2021-04-08 | Self-cleaning type waste gas sampling pretreatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214914595U (en) |
-
2021
- 2021-04-08 CN CN202120712747.5U patent/CN214914595U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20211130 |