CN201075066Y - Fog droplet sampling system - Google Patents
Fog droplet sampling system Download PDFInfo
- Publication number
- CN201075066Y CN201075066Y CNU2007201878165U CN200720187816U CN201075066Y CN 201075066 Y CN201075066 Y CN 201075066Y CN U2007201878165 U CNU2007201878165 U CN U2007201878165U CN 200720187816 U CN200720187816 U CN 200720187816U CN 201075066 Y CN201075066 Y CN 201075066Y
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- Prior art keywords
- pipe
- droplet
- sampling
- gathering
- flue gas
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Abstract
The utility model discloses a droplet sampling system and is characterized in that the utility model comprises a droplet collecting device (1) and a sampling pipe (2); the droplet collecting device (1) is a cylinder shape and consists of an upper round pipe (5), a middle round pipe (4) and a lower round pipe (3) which are connected with each other; the two ends of the middle round pipe (4) are enclosed and the middle thereof is provided with a condensation pipe (4a) which is communicates the upper round pipe (5) and the lower round pipe (3); the upper end of the middle round pipe (4) is covered by a filter paper (7); the upper end of the upper round cylinder (5) is enclosed and extended by a flue output pipe (5a); the lower end of the lower round cylinder (3) is sealed and the side wall thereof is extended by a suction nozzle (3a); the droplet collecting device (1) is fixed on the external wall of the sampling pipe (2); the flue output pipe (5a) is connected with the lower pipe port of the sampling pipe (2) through a soft pipe (8); the upper end of the sampling pipe (2) is sequentially connected with a vacuum pump (9) and a wet-typed gas meter (10). The utility model has simpler measurement and operation and exacter measurement results.
Description
Technical field
The utility model belongs to a kind of sampling system of desulfuration field, specifically, is the droplet sampling system in a kind of desulfurization flue gas.
Background technology
Wet desulphurization absorption tower is in operational process, and easily producing particle diameter is " mist " of 10-60 micron, should " mist " not only contain moisture, also is dissolved with sulfuric acid, sulfate, SO
2Deng, if do not properly settle, enter " mist " of chimney, will be simultaneously SO
2Take in the atmosphere, cause blower fan, heat exchanger and flue fouling and corrosion.Therefore, wet desulphurization has proposed the demist requirement to the absorption tower on technology, and flue gas after being purified will be carried out demist and be handled before leaving the absorption tower.Mist eliminator is the major equipment that carries out the flue gas demist, and it removes the continuous reliability service that fog effect can directly influence each system of FGD.
The principle of work of mist eliminator is: the flue gas after the desulfurization is with the bending channel of certain velocity flow through mist eliminator, flue gas is changed direction of motion rapidly, continuously, because of centrifugal force and action of inertia, droplet in the flue gas strikes on the mist eliminator blade and is captured down, droplet compiles the formation current, in action of gravity falls to the slurries pond, realize gas-liquid separation, thereby reach except that fog effect.
Droplet concentration is to investigate the important indicator that mist eliminator removes fog effect, and under normal operating condition, the droplet concentration requirement in the mist eliminator outlet flue gas is lower than 75mg/Nm
3
At present, what the method for test droplet concentration mainly adopted on the engineering is the magnesium ion trace method: with the sampling of smoke dust sampling instrument, the droplet in the flue gas is condensate in the tank body by drainer earlier, and drainer is washed with distilled water, the Mg in the constant volume post analysis droplet in the sampling back
2+Concentration; Analyze the Mg in the slurries filtrate simultaneously
2+Concentration is at last according to two Mg
2+Concentration value calculates droplet concentration.The subject matter that this method exists is exactly that error is big, because the magnesium ion content in slurries and the flue gas droplet is all very low, experimental error is very big, and need analyze by the precision equipment of atomic absorption spectrum and so on.
The utility model content
It is a kind of simple to operate that problem to be solved in the utility model is to provide, and measures accurate droplet sampling system.
The technical solution of the utility model is as follows: a kind of droplet sampling system, comprise the droplet gathering-device, sampling pipe, described droplet gathering-device is cylindrical, by last pipe, the middle part pipe, following pipe connects to form, described middle part pipe closed at both ends, the centre is provided with in the connection, the condenser pipe of following pipe, this pipe upper end, middle part is covered with filter paper, the described upper end closed of going up cylinder, and be extended with the flue gas efferent duct, described cylinder lower end sealing down, sidewall is extended with suction nozzle, described droplet gathering-device is fixed on the sampling pipe outer wall, is connected with flexible pipe between described flue gas efferent duct and the sampling pipe lower end mouth of pipe, and the sampling pipe upper end connects vacuum pump successively, wet gas meter.
At flexible pipe described in the design is silicone tube, and condenser pipe is shape in the shape of a spiral.In order to prevent gas leakage, need sampling pipe and droplet gathering-device be bundled with sealant tape, simultaneously, the junction between the pipe of droplet gathering-device upper, middle and lower also will tightly wrap with sealant tape.
When collecting droplet, open thieff hatch short tube lid earlier, slowly insert sampling pipe (keeping suction nozzle) and, the ring flange on the sampling pipe is fixed on the short tube mouth with geometrical clamp to sampled point back to flue gas flow direction.Open vacuum pump,, screw barometric damper, turn off vacuum pump the wet gas meter zeroing; The rotation sampling pipe to suction nozzle over against flue gas flow direction; Open vacuum pump, regulate control damper (regulate and want rapidly) to gas meter indication flow velocity and equate the thermometer measure temperature with the flow velocity that calculates.Constant speed is after air-breathing a period of time, and the rotation sampling pipe makes suction nozzle back to flue gas flow direction, and volume reading and pressure reading on the record wet gas meter slowly take out sampling pipe then, covers the short tube lid.Take off the droplet gathering-device, bring back the laboratory and weigh, subtract each other with initial weight and draw droplet weight.Calculate droplet concentration by formula.
Beneficial effect: the utility model adopts the method for constant speed suction flue gas, and it is collected that the droplet in the flue gas is collected device, the weight before and after weighing droplet gathering-device is collected get final product the droplet quality, and then obtain droplet concentration by formula.This method does not need the precision equipment of atomic absorption spectrum and so on to measure, and operates simplyr, and the result of measurement is more accurate.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
As shown in Figure 1, the utility model droplet sampling system, comprise droplet gathering-device 1, sampling pipe 2, described droplet gathering-device 1 is cylindrical, by last pipe 5, middle part pipe 4, following pipe 3 connects to form, be provided with in the connection in the middle of pipe 4 closed at both ends of described middle part, following pipe 5,3 condenser pipe 4a, these middle part pipe 4 upper ends are covered with filter paper 7, describedly go up the upper end closed of cylinder 5 and be extended with flue gas efferent duct 5a, the described sealing of cylinder 3 lower ends down, sidewall is extended with suction nozzle 3a, described droplet gathering-device 1 is fixed on sampling pipe 2 outer walls, adopt flexible pipe 8 to be connected between described flue gas efferent duct 5a and the sampling pipe 2 lower end mouths of pipe, sampling pipe 2 upper ends connect vacuum pump 9 successively, wet gas meter 10.
Described flexible pipe 8 is a silicone tube; Described condenser pipe 4a is shape in the shape of a spiral.With sealant tape described sampling pipe and droplet gathering-device 1 are bundled, the junction between the described droplet gathering-device 1 upper, middle and lower pipe 5,4,3 tightly wraps with sealant tape.
Principle of work: open thieff hatch short tube lid earlier, slowly insert droplet sampling pipe 2 (keeping suction nozzle) and, be fixed on the short tube mouth with the ring flange of geometrical clamp with droplet sampling pipe 2 upper ends to sampled point back to flue gas flow direction.Sampling pipe 2 and vacuum pump 9, wet gas meter 10 are connected; Open vacuum pump 9,, screw barometric damper, turn off vacuum pump 9 wet gas meter 10 zeroings; The rotation sampling pipe 1 to suction nozzle 6a over against flue gas flow direction; Open vacuum pump 9, regulate control damper (regulate and want rapidly) to gas meter indication flow velocity and equate that with the flue gas flow rate that " L " type pitot tube meter is calculated thermometer records temperature t.Constant speed is after air-breathing a period of time, and rotation sampling pipe 2 makes suction nozzle 3a back to flue gas flow direction, and at this moment, the volume reading on the wet gas meter 10 is the value of L; Pressure reading is the value of Pm, slowly takes out sampling pipe then, covers the short tube lid.Take off droplet gathering-device 1, bring back the laboratory and weigh, subtract each other with initial weight and promptly get the value that droplet weight is m.Atmospheric pressure Pa is 746.17mmHg; The temperature t that gets according to the said temperature instrumentation checks in the Pv value.Calculate droplet concentration according to following formula.Droplet concentration=m * 1000/[(Pa+Pm-Pv) * 273.15 * V/ (273.15+t)/760]]
Claims (3)
1. droplet sampling system, it is characterized in that: comprise droplet gathering-device (1), sampling pipe (2), described droplet gathering-device (1) is cylindrical, by last pipe (5), middle part pipe (4), following pipe (3) connects to form, be provided with in the connection in the middle of described middle part pipe (4) closed at both ends, following pipe (5,3) condenser pipe (4a), this middle part pipe (4) upper end is covered with filter paper (7), describedly go up the upper end closed of cylinder (5) and be extended with flue gas efferent duct (5a), the described sealing of cylinder (3) lower end down, sidewall is extended with suction nozzle (3a), described droplet gathering-device (1) is fixed on sampling pipe (2) outer wall, adopt flexible pipe (8) to be connected between described flue gas efferent duct (5a) and sampling pipe (2) the lower end mouth of pipe, sampling pipe (2) upper end connects vacuum pump (9) successively, wet gas meter (10).
2. according to the described droplet sampling system of claim 1, it is characterized in that: described flexible pipe (8) is a silicone tube; Described condenser pipe (4a) is shape in the shape of a spiral.
3. according to the described droplet sampling system of claim 1, it is characterized in that: with sealant tape described sampling pipe and droplet gathering-device (1) are bundled, the junction between described droplet gathering-device (1) the upper, middle and lower pipes (3,4,5) tightly wraps with sealant tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201878165U CN201075066Y (en) | 2007-09-27 | 2007-09-27 | Fog droplet sampling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201878165U CN201075066Y (en) | 2007-09-27 | 2007-09-27 | Fog droplet sampling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201075066Y true CN201075066Y (en) | 2008-06-18 |
Family
ID=39520325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201878165U Expired - Lifetime CN201075066Y (en) | 2007-09-27 | 2007-09-27 | Fog droplet sampling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201075066Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101187619B (en) * | 2007-09-27 | 2010-09-01 | 中电投远达环保工程有限公司 | Flue fog drip test method |
| CN104390817A (en) * | 2014-11-26 | 2015-03-04 | 北京东方园林股份有限公司 | Fog collector and fog collection method |
| CN104713748A (en) * | 2015-03-31 | 2015-06-17 | 农业部南京农业机械化研究所 | Fog-drop sampling device |
| CN105912046A (en) * | 2016-04-25 | 2016-08-31 | 南京信息工程大学 | Automatic control switch fogdrop spectrometer |
-
2007
- 2007-09-27 CN CNU2007201878165U patent/CN201075066Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101187619B (en) * | 2007-09-27 | 2010-09-01 | 中电投远达环保工程有限公司 | Flue fog drip test method |
| CN104390817A (en) * | 2014-11-26 | 2015-03-04 | 北京东方园林股份有限公司 | Fog collector and fog collection method |
| CN104390817B (en) * | 2014-11-26 | 2017-07-04 | 北京东方园林股份有限公司 | A kind of fog collector and fog collection method |
| CN104713748A (en) * | 2015-03-31 | 2015-06-17 | 农业部南京农业机械化研究所 | Fog-drop sampling device |
| CN105912046A (en) * | 2016-04-25 | 2016-08-31 | 南京信息工程大学 | Automatic control switch fogdrop spectrometer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080618 |
|
| CX01 | Expiry of patent term |