CN101957276A - Method and device for sampling high-temperature flue gases - Google Patents
Method and device for sampling high-temperature flue gases Download PDFInfo
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- CN101957276A CN101957276A CN 200910012636 CN200910012636A CN101957276A CN 101957276 A CN101957276 A CN 101957276A CN 200910012636 CN200910012636 CN 200910012636 CN 200910012636 A CN200910012636 A CN 200910012636A CN 101957276 A CN101957276 A CN 101957276A
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Abstract
The invention relates to high-temperature flue gases of various kilns in the field of industrial production, in particular to a method and a device for sampling the high-temperature flue gases. The device comprises a sample collecting head and an extending pipe connected with the sample collecting head, wherein the extending pipe is connected with an air exhausting device which is connected with a gas metering device. The invention has the following advantages as follows: with a favorable water cold freezing structure, the device is suitable for sampling flue gases from an industrial kiln under the conditions of high temperature. By using the method, samples can be directly taken out of the tail of the industrial kiln, so that the flue gas samples taken by the device can really explain the dust-containing condition. Dust-containing data deduced by analyzing the samples have the real property and can be used as decision basis for the design scheme. The device has simple structure and is convenient to operate.
Description
Technical field
The present invention relates to the flue gas sampling device of various stoves in the commercial production field, particularly relate to a kind of high-temperature flue gas sampling method and device, take a sample in order to high-temperature flue gas, for fume emission and the udst separation measure that should take provide accurate data to industrial furnace.
Background technology
The high-temperature flue gas that industrial furnace produces all have certain dust content, but its dust content differs greatly.For concrete industrial furnace, whether its exhaust gas dust content has surpassed national specified discharge standard, whether can be in line, if need udst separation, should adopt which type of equipment or the like, and these problems are all relevant with the high-temperature flue gas sample analysis.Sample analysis that can not get qualified sample, taking-up from high-temperature flue gas is inaccurate, and obtained data just can't be as the in line decision-making foundation that maybe need take the udst separation measure.
Existing industrial furnace high-temperature flue gas, the position environment is abominable because its temperature height, stove are discharged fume, also there is not suitable sampler can take out qualified flue gas sample with this understanding, general just according to the similar stove practice or similar empirical data before, decide smoke directly ventilating still to carry out udst separation and handle.The shortcoming of this practice is: 1, random big, do not meet the requirement of the scientification of decision-making; 2, after having determined to adopt in line method smoke treatment, in case actual discharge exceeds standard, direct result one is to cause environmental pollution, pays economic cost, the 2nd, and delay construction project and come into operation, to pay huge economic cost equally; Even the gas cleaning treatment measures are adopted in 3 decisions, but owing to grasp inaccurate to the dustiness in the flue gas, need which type of disposal route, adopt problems such as which type of dedusting and purifying device also to can not get real solution, its result causes the investment waste, be that the udst separation measure effect taked is poor, do not reach the purification purpose.
Summary of the invention
The present invention provides a kind of high-temperature flue gas sampling method and device in order to solve the problems of the technologies described above, purpose is to solve the sampling difficult problem of industrial furnace flue gas under hot conditions, it can directly take out qualified samples from stove smoke evacuation position, and separate, handling for flue gas provides accurate data, and the scientific foundation that provides of Decision-making of Design Scheme also is provided.
Be achieved in that the high-temperature flue gas sampler for reaching above-mentioned purpose the present invention, it is made of following structure: sample collecting head, and the extension that is connected with sample collecting head, extension is connected with air extractor, and air extractor is connected with the gas dosing device.
Described sample collecting head is threaded with extension.
Be provided with filter core between described sample collecting head and the extension.
Described sample collecting head and extension are enclosed within the cooling jacket.
Described cooling jacket is provided with the cold water import and export.
The end of described cooling jacket and extension is fixed with holding out against screw.
Between the outside surface of described sample collecting head and extension and the water cold sleeve inside surface for movingly.
The inflow temperature of described cooling water inlet is 10～30 ℃, and cold water water delivering orifice leaving water temperature is 30～50 ℃.
Described air extractor is connected with the gas dosing device by connecting pipe.
The high-temperature flue gas sampling method comprises the steps: the high-temperature flue gas sampler that will assemble, discharges the position from industrial furnace high-temperature flue gas and stays the sample tap of establishing to stretch into and carry out sealing; After opening air extractor, the high-temperature flue gas in the industrial furnace enters sample collecting head, and through filter element filtering, the grit in the high-temperature flue gas has been stayed on filter core and the sample collecting head, and is discharged by the extension afterbody behind metering and record through the clean air that filters.
Described before assembling high-temperature flue gas sampler to sample collecting head and the filter core record of weighing.
Described cleaning gas is pulled down sample collecting head and filter core after the extension afterbody is discharged, and is right with the preceding corresponding weight ratio of taking a sample through the back of weighing, and can draw high-temperature flue gas dust-laden weight.
Described drawing after the high-temperature flue gas dust-laden weight calculated with the clean air amount comparison that records again, can draw the dustiness of institute's pyrometry flue gas.
The present invention has the following advantages:
1, because it has good water-cooling structure, is suitable for carrying out under the industrial furnace high-temperature condition smoke sampling.
2, because method of the present invention is directly from the sampling of industrial furnace afterbody, so the flue gas sample that adopts this device to take out can truly illustrate its dust-laden situation.
3, because the dustiness data that its sample analysis draws have authenticity, can be used as the decision-making foundation of design proposal.
4, simple, easy to operate, the economically feasible of this apparatus structure.
5, sampling method of the present invention and device meet the recycling economy principle of energy-saving and emission-reduction.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Among the figure, 1, sample collecting head; 2, extension; 3, filter core; 4, water cold sleeve; 5, hold out against screw; 6, air extractor; 7, gas dosing device; 8, cooling water inlet; 9, hot water outlet; 10, connecting pipe.
Embodiment
Below by the embodiment description taken together with the accompanying drawings the present invention is described in further detail, but this is not to be limitation of the present invention, those skilled in the art are according to basic thought of the present invention, can make various modifications or improvement, but only otherwise break away from basic thought of the present invention, all within the scope of the present invention.
High-temperature flue gas sampler of the present invention as shown in the figure, constitute by following structure: sample collecting head 1, the extension 2 that is connected with sample collecting head 1, sample collecting head 1 is threaded with extension 2, be provided with filter core 3 between sample collecting head 1 and the extension 2, and clamp when relying on sample collecting head 1 and extension 2 to be fastenedly connected, sample collecting head 1 and extension 2 are enclosed within the cooling jacket 4, sample collecting head 1 is concordant with the cooling jacket termination, cooling jacket 4 is provided with cooling water inlet 8, hot water outlet 9, the inflow temperature of cooling water inlet 8 is 10～30 ℃, the leaving water temperature of hot water outlet 9 is 30～50 ℃, cooling jacket 4 is fixing with holding out against screw 5 with the end of extension 2, between the outside surface of sample collecting head 1 and extension 2 and the water cold sleeve inside surface for movingly, extension 2 is connected with air extractor 6, air extractor 6 is connected with gas dosing device 7 by connecting pipe 10, air extractor 6 and gas dosing device 7 measure in order to the high-temperature flue gas in the extraction stove and to it, so that the dustiness in the high-temperature flue gas is carried out quantitative analysis.Between the high-temperature flue gas sampling date, the cooling water flow in the cooling jacket 4 can not interrupt.Gas dosing device 6 should regularly carry out accuracy correction.Sample collecting head 1 and extension 2 are to adopt the metal material with good heat conductive performance to make.Cooling jacket is to be made by the material with good heat conductive performance and resistance to elevated temperatures.
The high-temperature flue gas sampling method, comprise the steps: before assembling high-temperature flue gas sampler sample collecting head and the filter core record of weighing, with the high-temperature flue gas sampler that assembles, discharge the position from industrial furnace high-temperature flue gas and stay the sample tap of establishing to stretch into and carry out sealing; After opening air extractor, high-temperature flue gas in the industrial furnace enters sample collecting head, and through filter element filtering, grit in the high-temperature flue gas has been stayed on filter core and the sample collecting head, and discharge by the extension afterbody behind metering and record through the clean air that filters, cleaning gas is pulled down sample collecting head and filter core after the extension afterbody is discharged, right through the back of weighing with the preceding corresponding weight ratio of taking a sample, can draw high-temperature flue gas dust-laden weight, calculate with the clean air amount comparison that records again after drawing high-temperature flue gas dust-laden weight, can draw the dustiness of institute's pyrometry flue gas.
Claims (13)
1. high-temperature flue gas sampler is characterized in that being made of following structure: sample collecting head, and the extension that is connected with sample collecting head, extension is connected with air extractor, and air extractor is connected with the gas dosing device.
2. high-temperature flue gas sampler according to claim 1 is characterized in that described sample collecting head is threaded with extension.
3. high-temperature flue gas sampler according to claim 2 is characterized in that being provided with filter core between described sample collecting head and the extension.
4. high-temperature flue gas sampler according to claim 1 is characterized in that described sample collecting head and extension are enclosed within the cooling jacket.
5. high-temperature flue gas sampler according to claim 4 is characterized in that described cooling jacket is provided with the cold water import and export.
6. high-temperature flue gas sampler according to claim 4 is characterized in that the end of described cooling jacket and extension is fixed with holding out against screw.
7. high-temperature flue gas sampler according to claim 4 is characterized in that between the outside surface of described sample collecting head and extension and the water cold sleeve inside surface for movingly.
8. high-temperature flue gas sampler according to claim 5, the inflow temperature that it is characterized in that described cooling water inlet is 10～30 ℃, cold water water delivering orifice leaving water temperature is 30～50 ℃.
9. high-temperature flue gas sampler according to claim 1 is characterized in that described air extractor is connected with the gas dosing device by connecting pipe.
10. high-temperature flue gas sampling method is characterized in that comprising the steps: the high-temperature flue gas sampler with assembling, and discharges the position from industrial furnace high-temperature flue gas and stays the sample tap of establishing to stretch into and carry out sealing; After opening air extractor, the high-temperature flue gas in the industrial furnace enters sample collecting head, and through filter element filtering, the grit in the high-temperature flue gas has been stayed on filter core and the sample collecting head, and is discharged by the extension afterbody behind metering and record through the clean air that filters.
11. high-temperature flue gas sampling method according to claim 10 is characterized in that before assembling high-temperature flue gas sampler sample collecting head and the filter core record of weighing.
12. high-temperature flue gas sampling method according to claim 10, it is characterized in that described cleaning gas pulls down sample collecting head and filter core after the extension afterbody is discharged, right through the back of weighing with the preceding corresponding weight ratio of taking a sample, can draw high-temperature flue gas dust-laden weight.
13. high-temperature flue gas sampling method according to claim 12 is characterized in that described drawing after the high-temperature flue gas dust-laden weight calculate with the clean air amount comparison that records again, can draw the dustiness of institute's pyrometry flue gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910012636 CN101957276A (en) | 2009-07-21 | 2009-07-21 | Method and device for sampling high-temperature flue gases |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910012636 CN101957276A (en) | 2009-07-21 | 2009-07-21 | Method and device for sampling high-temperature flue gases |
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| CN101957276A true CN101957276A (en) | 2011-01-26 |
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| CN 200910012636 Pending CN101957276A (en) | 2009-07-21 | 2009-07-21 | Method and device for sampling high-temperature flue gases |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101810976A (en) * | 2010-04-22 | 2010-08-25 | 河北工业大学 | Tail gas filter for preparing gallium nitride by hydride or chloride vapor phase epitaxy |
| CN103837378A (en) * | 2014-03-11 | 2014-06-04 | 南京康测自动化设备有限公司 | Flue gas denitrification sampling device as well as analysis system and method |
| CN106198126A (en) * | 2016-06-22 | 2016-12-07 | 北京化工大学 | A kind of simulated combustion source is granular material discharged and harvester |
| CN113324806A (en) * | 2021-05-19 | 2021-08-31 | 合肥金星机电科技发展有限公司 | Sampling probe rod for high-temperature flue gas |
-
2009
- 2009-07-21 CN CN 200910012636 patent/CN101957276A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101810976A (en) * | 2010-04-22 | 2010-08-25 | 河北工业大学 | Tail gas filter for preparing gallium nitride by hydride or chloride vapor phase epitaxy |
| CN103837378A (en) * | 2014-03-11 | 2014-06-04 | 南京康测自动化设备有限公司 | Flue gas denitrification sampling device as well as analysis system and method |
| CN106198126A (en) * | 2016-06-22 | 2016-12-07 | 北京化工大学 | A kind of simulated combustion source is granular material discharged and harvester |
| CN113324806A (en) * | 2021-05-19 | 2021-08-31 | 合肥金星机电科技发展有限公司 | Sampling probe rod for high-temperature flue gas |
| CN113324806B (en) * | 2021-05-19 | 2022-03-11 | 合肥金星智控科技股份有限公司 | Sampling probe rod for high-temperature flue gas |
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Application publication date: 20110126 |