CN207036510U - A kind of desulfurization wet flue gas drop sample grading device - Google Patents
A kind of desulfurization wet flue gas drop sample grading device Download PDFInfo
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- CN207036510U CN207036510U CN201720600301.7U CN201720600301U CN207036510U CN 207036510 U CN207036510 U CN 207036510U CN 201720600301 U CN201720600301 U CN 201720600301U CN 207036510 U CN207036510 U CN 207036510U
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Abstract
Desulfurization wet flue gas drop sample grading device of the present utility model, by drop sample grading device, connecting tube and sampler outer tube composition, drop sample grading device and connecting tube row are placed in the sampler outer tube, wherein, drop sample grading device is by sampling mouth, sedimentation pipe, helical acquisition pipe, impact absorbing pipe forms, the cavity of sedimentation pipe is circular cylindrical cavity, sedimentation pipe afterbody opens up an outlet and is connected with helical acquisition pipe, the smoke inlet of sedimentation pipe is the sampling mouth, helical acquisition pipe is provided with a built-in glass screw pipe bent by glass tube, helical acquisition pipe afterbody opens up an outlet and is connected with impact absorbing pipe, impact absorbing pipe is provided with a built in shock pipe, side wall of the mouth of pipe of the impact tube towards cavity, impact absorbing pipe afterbody opens up an outlet and is connected with connecting tube.The utility model scope of application is more extensive, under the conditions of isokinetic sampling is kept, can be used for the collection of absorption tower demisting device outlet droplet, it can also be used for the drop collection of flue, chimney, and the free drop in flue gas can be gathered, measure gaseous state moisture, there is provided flue gas total moisture.
Description
Technical field
Pollutant testing apparatus is the utility model is related to, more particularly to a kind of desulfurization wet flue gas drop sample grading device.
Background technology
The wet desulphurization of partial fuel coal unit uses wet stack mode, because Wet chimney includes wet flue system and wet cigarette
Chimney system, the flue gas flowed through is in wet saturation and carries discontinuous liquid water droplets.These drops are in the presence of flow of flue gas, part
Drop takes throat out of with flue gas stream and enters ambient air, droplet settling and produce chimney rain.When containing desulfurated plaster in drop
During composition, also referred to as gypsum rain.Chimney rain or gypsum rain because containing acidic components, high salt component and to surrounding enviroment, building
The generation such as thing, vegetation covering, sour corrosion etc. influence.Research is thought to cause in chimney rain or the mainly flue gas of gypsum rain discharge
Drop higher than 100 microns.
The assessment discharged for supporting chimney rain or gypsum rain, it is necessary to measure the droplet particles feature of Wet chimney system discharge,
The content of particle diameter distribution and gaseous state moisture, as the index of elevated emission intensity, foundation is provided to assess.
The assay method of slurry drops content in a kind of existing flue gas, there is provided a kind of nature of glass drop collector, pass through
Fast sample mode gathers the drop of certain particle diameter (about 3 microns), and still, this collector can not provide grain size grading measurement, carry
The data of confession are gypsum slurries content, can not measure total moisture content.
Utility model content
The utility model provides a kind of desulfurization wet flue gas drop sample grading device, and it can measure the complete of desulfurization wet flue gas drop
Moisture.
In order to realize the purpose of above-mentioned utility model, desulfurization wet flue gas drop sample grading device of the present utility model is by drop
Sample grading device, connecting tube and sampler outer tube composition, the drop sample grading device and connecting tube row are placed in described take
In sampling device outer tube, wherein, drop sample grading device is made up of sampling mouth, sedimentation pipe, helical acquisition pipe, impact absorbing pipe,
The cavity of sedimentation pipe is circular cylindrical cavity, and the sedimentation pipe afterbody opens up an outlet and is connected with helical acquisition pipe, sedimentation pipe
Smoke inlet is the sampling mouth, and helical acquisition pipe is provided with a built-in glass screw pipe bent by glass tube, and impact is inhaled
Closed tube is provided with a built in shock pipe bent by glass tube.
Further, the sampling mouth is installed on sedimentation pipe top sidewall, its axis and the rectangular phase in sedimentation pipe axis
Hand over.
Further, the impact absorbing pipe includes a cavity and a built in shock pipe, the mouth of pipe court of the built in shock pipe
To the side wall of cavity, the afterbody of the cavity opens up an outlet and is connected with connecting tube.
The sampler of droplet particles content and total moisture content in wet flue gas provided by the utility model, survey can be classified
Measure particle diameter >=100 micron in wet flue gas, 15-100 microns ,≤15 microns of drop and gaseous state moisture.With droplet sampling cartridge
Put and compare, the utility model has the advantage of：The sampling apparatus scope of application is more extensive, under the conditions of isokinetic sampling is kept,
The collection of absorption tower demisting device outlet droplet can be used for, it can also be used to the drop collection of flue, chimney.And droplet sampling apparatus is only
The outlet of absorption tower demisting device can be used for；The sampling apparatus can be with sample grading drop, and measures total moisture, can distinguish >=100
Micron, 15-100 microns ,≤15 microns of free droplet content and total moisture (above-mentioned free moisture and vaporous water point and) contain
Amount.Gaseous state moisture gathers gaseous state moisture with moisture absorption pipe, calculates water content according to gravimetric method flue gas moisture method of testing.And droplet
Sampling apparatus is only capable of gathering >=3 micro droplets.
In addition, compared with smoke moisture sampling apparatus, the utility model has the advantage of：The wet cigarette of desulfurization of the present utility model
Gas-liquid drop sample grading device can gather the free drop in flue gas, measure gaseous state moisture, there is provided flue gas total moisture.And flue gas
Humidity sampling apparatus is usually applicable only to the measurement of dry flue gas humidity, the Corresponding Countermeasures of no collection free moisture, can not adopt respectively
Collect free moisture and gaseous state moisture.
Brief description of the drawings
Fig. 1 is the overall structure diagram of desulfurization wet flue gas drop of the present utility model and total moisture sampler；
Fig. 2 is sedimentation pipe structural representation；
Fig. 3 is helical acquisition tubular construction schematic diagram；
Fig. 4 is impact absorbing tubular construction schematic diagram；
Fig. 5 is sampler outer sleeve structure schematic diagram.
Embodiment
Desulfurization wet flue gas drop of the present utility model and total moisture sampler：
Shown in Figure 1, desulfurization wet flue gas drop of the present utility model is with total moisture sampler by drop sample grading
Device, connecting tube 200 and sampler outer tube composition.The sampling row that wherein drop sample grading device, connecting tube 200 form are placed in
In sampler outer tube.
Drop sample grading device is made up of sampling mouth 110, sedimentation pipe 120, helical acquisition pipe 130, impact absorbing pipe 140.
Sampling mouth 110 is tube, and glass material, diameter of bore determines according to isokinetic sampling's principle, such as 4mm-8mm,
Wall thickness 1-2mm, height 40mm, chamfering are 45 °, stay wall thickness 0.2mm.Sampling mouth 110 is connected as with the top side wall of sedimentation pipe 120
One entirety, position is referring to Fig. 1.Sampling mouth 110 is used in flue gather the liquid in flue gas, including flue gas in flue gas flow field
Drop, gas etc..Sampling period, samples the face flue gas flow direction of mouth 110, and constant speed gathers drop and gas in flue gas.That is adjustment sampling
Flow, make the flue gas flow rate in sampling mouth equal with the flue gas flow rate of the sampled point, reduce sampling error.
Sedimentation pipe 120 mainly gathered in flue gas >=100 microns of drop.According to sedimentation principle, when drop enters with flue gas
Cavity 121, flue gas stall is with turning round, air-liquid separation.Separating the condition of 100 micro droplets is：During stop of the flue gas in cavity
Between be more than 100 micro droplets and be deposited on maximum time of tube wall.
Referring back to shown in Fig. 2 to Fig. 5, the cavity 121 of sedimentation pipe 120 is circular cylindrical cavity, glass material, diameter 50mm.
The height of cavity 121 about 100mm, it is specific to need to be determined according to gas residence time, it is micro- to keep gas residence time to be more than 100
Sedimentation time of the drop of rice in sedimentation pipe 120.The afterbody of sedimentation pipe 120 opens up outlet 122, using 8# grinding port plugs and spiral
Collection tube 130 connects.The smoke inlet of sedimentation pipe 120 is sampling mouth 110.The afterbody of sedimentation pipe 120 is provided with outlet 122, is 8#
Grinding port plug, it is connected with the entrance of downstream vessel helical acquisition pipe 130.
Outlet 122 is connected on the round bottom center of cavity 121, vertically and round bottom.Pipe about 30mm is filled in outside cavity 121, remainder
Divide in cavity.Prevent collection liquid gravity from flowing out.
Helical acquisition pipe 130 is helix tube, glass material built in a circular cylindrical cavity.The diameter 50mm of cavity 131, length
About 75mm.The vessel that built-in glass screw pipe 132 is bent by glass tube.The time that flue gas flows through in helix tube 132 is about
For, such as 15 micro droplets, 1.3 times of the absorption maximum time, length is about 220mm.The import of helix tube 132 is with 8# grounds
It is tightly connected with sedimentation pipe outlet 122, it is exported at the center of cavity 131, and the mouth of pipe is towards the direction of sedimentation pipe 120.The tail of cavity 131
Portion opens up outlet 133, is connected using 8# grinding port plugs with impact absorbing pipe 140.
The upstream of helical acquisition pipe 130 is connected to sedimentation pipe 120, for gathering the liquid in flue gas between 15 microns -100 microns
Drop.According to helix tube separation principle, the drop in flue gas more than 15 microns is centrifuged in nature of glass helix tube.Flue gas is through spiral shell
It is discharged into after coil in cavity, gathers drop and stay in cavity, flue gas is discharged through outlet 134, is connected with impact absorbing pipe 140.
In this embodiment, helical acquisition pipe 130 is the vessel of helix tube built in a nature of glass circular cylindrical cavity.Cavity
131 diameter 50mm, length about 75mm.
The import of collection tube 130 is 8# grounds 133, length 30mm, the end dome of cavity 131 is connected to sintering processing
Center.About 15mm is outside cavity 131, and remainder is in cavity 131.
Built-in glass screw pipe 132 is bent by glass tube to be formed.The time that flue gas flows through in helix tube 132 is about 15 micro-
1.3 times of rice drop maximum deposition time.The import of helix tube 132 is connected with the outlet of ground 133 with sintering processing, smoothly
Transition.The outlet of helix tube 132 is on the axis of cavity 131, and the mouth of pipe is towards the direction of upstream sedimentation pipe 120.
The afterbody of cavity 131 at round bottom center, outlet 134 is set perpendicular to round bottom, be 8# grinding port plugs.Fill in the internal diameter of pipe 134
6mm, total height 45mm, wherein about 30mm, outside cavity 131, remainder is in cavity.Prevent collection liquid gravity from flowing out.
Impact absorbing pipe 140 is circular cylindrical cavity built in shock pipe, a shock plate, glass material.The diameter of cavity 141
50mm, length about 80mm.Built in shock pipe 142, pipe range 50mm, spout diameter 1.8-2.2mm, the mouth of pipe is towards the side of cavity 141
Wall, distance 5mm.The afterbody of cavity 141 opens up outlet 144, is φ 8 pagoda joint, is connected with connecting tube 200.
Sampling mouth 110 is connected as an entirety with the top side wall of sedimentation pipe 120, and schematic diagram 1 is seen in position.
The diameter of bore generally use 4mm of mouth 110 is sampled, the wet cigarette that collection flue gas flow rate is 14-21.5m/s can be corresponded to
Gas.Sampling mouth diameter of bore uses 8mm, can correspond to the wet flue gas that collection flue gas flow rate is 3.5-5.5m/s.It can also be
4.5mm, 6mm etc..
Sampling mouth 110 is installed on the top sidewall of sedimentation pipe 120, and its axis is at right angles intersected with the axis of sedimentation pipe 120.
It is 40mm to sample the threshold value sedimentation pipe 120 of mouth 110, reduces interference of the sedimentation pipe to the flue gas fluidised form of sampled point.
Impact absorbing pipe 140 is used in separating flue≤15 microns of free drop, using high velocity air strike against glass plate,
Retention droplet theory is acquired.
Impact absorbing pipe 140 is a circular cylindrical cavity, the impact tube of built-in U-shaped band quarter bend, glass material.Cavity
141 diameter 50mm, length about 80mm.
The import of impact absorbing pipe 140 is 8# grounds 143, length 30mm, the end of cavity 141 circle is connected to sintering processing
The center on top.About 15mm is outside cavity 141, and remainder is in cavity 141.The outlet of ground 143 with sintering processing with it is built-in
The import connection of impact tube 142, is seamlessly transitted.
There is a closing in shape Taper Pipe front end of built in shock pipe 142, bends the curved tube of U-shaped band ﹃ types (see Fig. 1).Impact tube
142 outlet is against the side wall of cavity 141, and the mouth of pipe is apart from side wall 5mm.Used by the use of side wall as retention glass plate.
The afterbody of cavity 141 at round bottom center, outlet 144 is vertically set with round bottom, be φ 8 pagoda joint, internal diameter 6mm,
Total height 45mm, wherein about 30mm, outside cavity 131, remainder is in cavity.Prevent collection liquid gravity from flowing out.Outlet
144 are connected with connecting tube 200 and (are described below).
Connecting tube 200 uses PTFE materials, and length adapts to sampling pipe, and length of tube+2.0m is sampled for L.Connecting tube 200 and punching
Hit the pagoda joint connection of the outlet 144 of absorption tube 140.
Referring back to Fig. 1 and Fig. 5, also set up outside desulfurization wet flue gas drop of the present utility model with total moisture sampler
There is sampler outer tube.
Sampler outer tube is made up of end cap 310, outer tube 320 and rearmounted outer tube 330.Using SUS316L stainless steels
Or corrosion-resistant, anti-collision capacity is equivalent or more preferably material.
End cap 310 is suitable with the diameter of outer tube 320.The outer silk of the front end car standard pipe thread of outer tube 320, with the internal thread of end cap 310
It is engaged.Shell edge opens up U-shaped groove, and mouth 110 is sampled to place.The afterbody car standard pipe thread internal thread of outer tube 320, it is and rear
Outer tube 330 is put to connect.
Rearmounted outer tube 330 is connect 334 with stepped ramp type pipe and formed by short tube 331, frustum type short circuit 332, long tube 333.Short tube
331st, frustum type short circuit 332, long tube 333 are welded as a whole.
The outer silk of the rear end car standard pipe thread of long tube 333, connects 334 with stepped ramp type pipe and is connected.
Stepped ramp type pipe connects 334 and connect by stepped ramp type pipe to be formed with spring protecting sleeve, is connected with the rear end of long tube 333；Rear end and M14's
Spring connects, and is welded as a whole.
Referring back to Fig. 1, the connecting tube 200 is connected with the afterbody outlet 144 of impact absorbing pipe 140, access sampling meter
Measure device.
The application method of desulfurization wet flue gas drop of the present utility model and total moisture sampler：
Desulfurization wet flue gas drop of the present utility model is counted with U-shaped moisture absorption pipe, sampling when in use with total moisture sampler
Device connection composition sampling system is measured, flue gas is gathered using isokinetic sampling's method.
Wherein sampling mouth 110 can be changed according to the flue gas flow rate of sampled point, to keep isokinetic sampling.Diameter of bore 4mm
The wet flue gas that collection flue gas flow rate is 14-21.5m/s can be corresponded to by sampling mouth.Diameter of bore 8mm sampling mouth can be corresponded to and adopted
Integrate wet flue gas of the flue gas flow rate as 3.5-5.5m/s.4.5mm, 6mm sampling mouth can also be used.
Pitot tube is used for instantaneous total head, the static pressure for gathering sampled point flue gas, there is provided gives automatic constant speed sampling instrument, calculates in time
With adjusting sampling flow, isokinetic sampling is kept.
The hygroscopic agent such as gaseous state Sampler, built-in calcium chloride or silica gel is formed by the U-shaped moisture absorption pipe of two level.
Automatic constant speed sampling instrument has automatic data collection flue gas pressures, automatic constant speed sampling and the function of metering sampling flow.
The actual samples volume and mark condition dry flue gas sampling volume data of sampling period are provided.
Sample record and computational methods：
According to the flow velocity of flue gas sampling point, using Pitot tube parallel method, constant speed collection flue gas.Record automatic constant speed sampling instrument
Mark condition dry flue gas sampling volume V.
Before sampling, first drying sampling mouth 110, sedimentation pipe 120, helical acquisition pipe 130, impact absorbing pipe 140, weighing is adopted
Quality before sample, it is recorded as m (100) 0, m (15-100) 0, m (15) 0.The same quality m (g) 0 for weighing the U-shaped moisture absorption pipe of two level.Respectively
Vessel are assembled into desulfurization wet flue gas drop and total moisture sampler, and sampling system is formed according to Fig. 2 connections.
After sampling, each vessel of off-the-line, each vessel outer surface is dried, weigh, be recorded as m (100) 1, m (15-100) respectively
1、m(15)1、m(g)1.Gain in weight M is calculated according to the following formula.
Finally, above example is noted that only illustrating the technical solution of the utility model and unrestricted.To the greatest extent
The utility model is described in detail with reference to embodiment for pipe, it will be understood by those within the art that, to this practicality
New technical scheme is modified or equivalent substitution, without departure from the spirit and scope of technical solutions of the utility model, its
It all should cover among right of the present utility model.
Claims (3)
1. a kind of desulfurization wet flue gas drop sample grading device, it is characterised in that it is by drop sample grading device, connecting tube and sampling
Device outer tube is formed, and the drop sample grading device and connecting tube row are placed in the sampler outer tube, wherein, drop
Sample grading device is made up of sampling mouth, sedimentation pipe, helical acquisition pipe, impact absorbing pipe, and the cavity of the sedimentation pipe is cylinder
Cavity, sedimentation pipe afterbody open up an outlet and are connected with helical acquisition pipe, and the smoke inlet of sedimentation pipe is the sampling mouth, spiral
Collection tube is provided with a built-in glass screw pipe bent by glass tube, and impact absorbing pipe is bent by glass tube provided with one and formed
Built in shock pipe.
2. desulfurization wet flue gas drop sample grading device as claimed in claim 1, it is characterised in that it is heavy that the sampling mouth is installed on
Pipe top sidewall is dropped, and its axis is at right angles intersected with sedimentation pipe axis.
3. desulfurization wet flue gas drop sample grading device as claimed in claim 1, it is characterised in that the impact absorbing pipe includes
One cavity and a built in shock pipe, towards the side wall of cavity, the afterbody of the cavity opens up one for the mouth of pipe of the built in shock pipe
Outlet is connected with connecting tube.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720600301.7U CN207036510U (en) | 2017-05-26 | 2017-05-26 | A kind of desulfurization wet flue gas drop sample grading device |
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| CN201720600301.7U CN207036510U (en) | 2017-05-26 | 2017-05-26 | A kind of desulfurization wet flue gas drop sample grading device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111323328A (en) * | 2020-03-23 | 2020-06-23 | 中国特种设备检测研究院 | Double-8-shaped wet-type desulfurization flue gas water holdup measuring device |
| CN111337545A (en) * | 2019-12-24 | 2020-06-26 | 中国特种设备检测研究院 | Device and method for measuring moisture content of rapid supersaturated flue gas facing wind |
-
2017
- 2017-05-26 CN CN201720600301.7U patent/CN207036510U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111337545A (en) * | 2019-12-24 | 2020-06-26 | 中国特种设备检测研究院 | Device and method for measuring moisture content of rapid supersaturated flue gas facing wind |
| CN111337545B (en) * | 2019-12-24 | 2023-04-07 | 中国特种设备检测研究院 | Device and method for measuring moisture content of rapid supersaturated flue gas facing wind |
| CN111323328A (en) * | 2020-03-23 | 2020-06-23 | 中国特种设备检测研究院 | Double-8-shaped wet-type desulfurization flue gas water holdup measuring device |
| CN111323328B (en) * | 2020-03-23 | 2021-12-14 | 中国特种设备检测研究院 | Double-8-shaped wet-type desulfurization flue gas water holdup measuring device |
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