CN206725279U - Boiler smoke fine particle sampling pretreatment device and sampling gun - Google Patents
Boiler smoke fine particle sampling pretreatment device and sampling gun Download PDFInfo
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- CN206725279U CN206725279U CN201720499716.XU CN201720499716U CN206725279U CN 206725279 U CN206725279 U CN 206725279U CN 201720499716 U CN201720499716 U CN 201720499716U CN 206725279 U CN206725279 U CN 206725279U
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- Prior art keywords
- sampling
- flue gas
- fine particle
- sampling gun
- charge
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- 238000005070 sampling Methods 0.000 title claims abstract description 76
- 239000010419 fine particle Substances 0.000 title claims abstract description 20
- 239000000779 smoke Substances 0.000 title claims abstract description 18
- 239000008896 Opium Substances 0.000 claims abstract description 19
- 229960001027 opium Drugs 0.000 claims abstract description 19
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 41
- 239000003546 flue gas Substances 0.000 abstract description 41
- 238000010438 heat treatment Methods 0.000 abstract description 16
- 239000002245 particle Substances 0.000 abstract description 6
- 239000013618 particulate matter Substances 0.000 abstract description 5
- 238000009833 condensation Methods 0.000 abstract description 4
- 230000005494 condensation Effects 0.000 abstract description 4
- 235000014171 carbonated beverage Nutrition 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 7
- 235000019504 cigarettes Nutrition 0.000 description 5
- 230000035939 shock Effects 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000012716 precipitator Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229920000557 Nafion® Polymers 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model provides a kind of boiler smoke fine particle sampling pretreatment device and sampling gun, and described device includes：Sampling gun, impinger, the opium pipe of described sampling gun have the bringing-up section for being placed in and being sampled in flue, and the opium pipe being placed in outside flue is in charge of to receive.The utility model is sampled under conditions of without heating, and the particle diameter state of particulate matter in flue gas is not changed, the condensation of carbonated drink in flue gas does not occur, it can truly, effectively collect different grades of fine particle, reduce heating bag and corresponding heating controller etc., add the convenience of system.
Description
Technical field
Boiler smoke treatment technology is the utility model is related to, is concretely a kind of pre- place of boiler smoke fine particle sampling
Manage device and sampling gun.
Background technology
One of the main reason for coal-burning power plant's fine particle discharge is Brownish haze weather, to coal-fired plant flue gas PM2.5
And monitoring, the grasp emission status of the fine particle such as PM1, PM0.5, it is that environmental administration and power plant need to solve the problems, such as, and
The smoke gas treatment facilities such as power plant's evaluation desulfurization, wet electrical dust precipitator reduce PM2.5 discharges and provide skill to PM2.5 removal effect
Art basis.ISO 23210:2009th, the standard such as DL/T 1520-2016 is, it is specified that using gravimetric method to coal steam-electric plant smoke fine grained
The technical method of thing concentration of emission test, i.e., entered using capital equipment to hit the sampling system of sampler at thermal power plant scene
The collection of row sample, weighing for sample is carried out in laboratory, and concentration of emission is calculated by example weight and flue gas volume.Therefore,
Objective, accurate collection flue gas PM2.5 samples, it is to grasp coal fired thermal power plant flue gas PM2.5 emission status, study its discharge characteristics
Basis.
Coal-fired plant boiler flue gas, especially after wet desulphurization, wet electrical dust precipitator, except containing SO2、NOX, flue dust
Outside the major pollutants such as (including fine particle PM2.5), CO, also containing substantial amounts of steam (10% or so), SO3Deng causing cigarette
Gas dew-point temperature height (more than 100 DEG C), therefore, to ram, pre-cut cutter and other companies when relevant criterion requires sampling
Jointed tubular workpieces are heated.Fed back from onsite application situation, system heating at present is primarily present problem：To the temperature of heat tracing in standard
Do not provide specifically, and because the sampling environment such as difference, residing temperature, humidity of sampling unit, sample is variant,
The difference of flue gas dew point is caused, in actual samples, the setting to heat tracing temperature, operability is high；During sampling, heat tracing temperature
Too high, the fine particle form in flue gas may change, i.e., particle diameter may become smaller after particulate matter is heated；Heat tracing temperature
It is too low, aqueous vapor in flue gas may be caused to eliminate, be attached to sampling inside pipe wall, adsorb the fine particle in flue gas, these are all
The objective and accurate property of sampling will be influenceed.
According to standard, domestic existing fine particle sampling system is using the technology to associated components heating, by flue gas
Temperature is heated to more than dew point, to ensure that flue gas steam is non-condensing.Add using made of high temperature resistant, corrosion-resistant, isolation material
Heat bag, heats to parts such as cyclone separator, ram, bridge pieces, heats the temperature of bag by temperature control equipment control
System.
Prior art is not high in actual operability, the larger (highest of scope of the temperature specifications to sampling each part heat tracing
20 DEG C are differed with minimum), and because the sampling environment such as difference, residing temperature, humidity of sampling unit, sample has difference
It is different, the difference of flue gas dew point is caused, in actual samples, the setting to heat tracing temperature, operability is high.During sampling, heat tracing
Temperature is too high, and the fine particle form in flue gas may change, i.e., particle diameter may become smaller after particulate matter is heated；Heat tracing
Temperature is too low, and aqueous vapor in flue gas may be caused to eliminate, and is attached to sampling inside pipe wall, adsorbs the fine particle in flue gas, this
The objective and accurate property of sampling will be all influenceed a bit.It is cumbersome, because fine particle sampling system is before sampling is hit, it is necessary to adopting
Sample rifle, pre-cut cutter, the part heat tracings such as sampler, bridge piece are hit, it is cumbersome, and sample every time all right to heating device
Dismounted, it is cumbersome.
Utility model content
To improve the portability of flue gas sampling system, the utility model embodiment provides a kind of boiler smoke fine particle
Sampling pretreatment device, described device include：Sampling gun, impinger, the opium pipe of described sampling gun, which has, is placed in cigarette
The bringing-up section sampled in road, the opium pipe being placed in outside flue are in charge of to receive.
In the utility model embodiment, the bringing-up section of described sampling gun and receive to be in charge of and be formed in one.
In the utility model embodiment, external diameter 10mm, internal diameter 6mm are in charge of in described receiving.
Meanwhile a kind of boiler smoke sampling gun is also disclosed in the utility model, the opium pipe of described sampling gun, which has, is placed in cigarette
The bringing-up section sampled in road, the opium pipe being placed in outside flue are in charge of to receive.
In the utility model embodiment, the bringing-up section of sampling gun and receive to be in charge of and be formed in one.
In the utility model embodiment, external diameter 10mm is in charge of in receiving for boiler smoke sampling gun, internal diameter 6mm.
The utility model can discharge coal-fired plant boiler the dew-point temperature of more than 100 DEG C of flue gas, be reduced to -10 DEG C of left sides
The right side, normal environment temperature is significantly less than, realizes and sampled under conditions of without heating, and do not change particle in flue gas
The particle diameter state of thing, the condensation of carbonated drink in flue gas does not occur, can truly, effectively collect different grades of fine particle,
Reduce heating bag and corresponding heating controller etc., add the convenience of system.
It is cited below particularly preferably real for above and other objects, features and advantages of the present utility model can be become apparent
Example is applied, and coordinates institute's accompanying drawings, is described in detail below.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is to receive the organigram for being in charge of sampling gun in the embodiment of the utility model one.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Point (Nafion) pipe of receiving is a kind of new moisture content exchange material, its principle be according to pipe inside and outside psychrometric difference, will
Moisture content in sample gas removes, and has quick water removal and does not change the function of original smoke components.
The system of the utility model embodiment is creative will to be received to be in charge of and be integrated in sampling gun except wet stock, by receiving point
The effect of pipe, the steam in flue gas is removed, sampling flue gas dew point is reduced to below sampling environment temperature, makes flue gas in air
There is no condensation vapor under the temperature conditionss of environment, it is not necessary to follow-up heating device, you can complete the shock sampling of fine particle.From
And the convenience of sampling system is improved, while can avoid that tracing system is too high, the too low influence to sampled result.
The utility model embodiment discloses a set of device to be dehumidified to flue gas, and the device is used for thin of coal steam-electric plant smoke
Pretreatment during grain thing (PM2.5) sampling, that is, remove the steam in flue gas.
The dehumidification system of the present embodiment is in charge of sampling gun, switch board, blowback air etc. and formed by integrated receive.
1st, receive and be in charge of sampling gun：
As shown in figure 1, it is in charge of the organigram of sampling gun to be received in the embodiment of the utility model one.The opium pipe of sampling gun
With the bringing-up section 101 that is sampled in flue is placed in, the opium pipe being placed in outside flue is in charge of 102 to receive, and receives and is in charge of 102 and heating
One end of the connection of section 101 is provided with blowback air outlet 104, and the one end being connected with impinger 103 is provided with blowback air entrance 105.
The present embodiment, which will be received, to be in charge of 102 and is integrated in the sampling gun 101 of 1.5m length, the receiving of the present embodiment be in charge of 102 be into
Product, length about 0.8m, external diameter 10mm, internal diameter 6mm, the flue gas that humidity is within 15%, flow is within 15L/min can be removed
Steam；Due to receive be in charge of removal for vaporous water, it is therefore desirable to 0.6m bringing-up section is set in sampling gun forward part, by flue gas temperature
Degree is improved to more than 110 DEG C.
Flue gas keeps dry flue gas state, is in charge of into hollow the receiving in rear end after the heating of opium pipe leading portion, is in charge of interior incite somebody to action receiving
After steam in flue gas removes, the dew-point temperature of flue gas is greatly reduced, and is not changing in flue gas under conditions of composition and state, directly
Tap into pre-cut cutter, hit sampler.
2nd, switch board (not indicating)：
It is integrated with flue-gas temperature display, opium pipe heating controller, flue gas dew point instrument, blowback air flowmeter, power switch
Deng display, control element, flue gas temperature, blowback throughput can be controlled, it is final to control opium pipe outlet dew-point temperature.
3rd, blowback air system (not indicating)：
It is made up of air compressor machine, high efficiency particulate air filter, flow controller etc., after air compressor machine compressed air, passes through high efficiency particulate air filter
Oil removing, water removal, dedusting are carried out, oil-free, dustless clean dry flue gas are provided to receive to be in charge of.
The utility model embodiment is by taking the sampling and testing for carrying out flue gas PM2.5 in some 300MW unit of Hebei as an example, sampling
Point position exports in wet electrical dust precipitator, and single sample sample time is 3 hours, is in charge of sampling gun using receiving, sampling gun outlet cigarette
Gas leak source temperature is reduced to -5 DEG C, less than the environment temperature (10 DEG C) when sampling, is showed no in the sample and sampling system of collection
Moisture content, the sample of collection weigh after the constant weight of laboratory.Comprise the following steps that：
(1) sampling system assembles, including：Power line connection, the connection of purge gas system and shock sampling system connection
Deng；
(2) sampling gun is inserted in flue thieff hatch as requested, connection power supply, source of the gas；
(3) start sampling opium pipe temperature controller, opium pipe temperature is risen to 120 DEG C or so, stablized 2 minutes；
(4) start blowback air, start sampling pump, regulation blowback throughput, be reduced to sampling flue gas dew point temperature minimum；
(5) pre-cut cutter, shock sampler are connected with sampling opium pipe, record sample start times, start to gather sample；
(6) sampling is completed according to set time, stop sampling pump, dismounting shock sampler, opium pipe is taken out from thief hatch,
Stop blowback air air compressor machine etc., complete sampling.
Embodiment of the present utility model can discharge coal-fired plant boiler the dew-point temperature of more than 100 DEG C of flue gas, reduction
To -10 DEG C or so, normal environment temperature is significantly less than, system is being sampled under conditions of without heating, does not change cigarette
The particle diameter state of particulate matter, the condensation of carbonated drink in flue gas does not occur in gas, can truly, effectively collect different grades of thin
Particulate matter, while sampling system reduces 3 heating bags and corresponding heating controller etc., adds the convenience of system.
Specific embodiment is applied in the utility model to be set forth principle of the present utility model and embodiment, with
The explanation of upper embodiment is only intended to help and understands method and its core concept of the present utility model；Meanwhile for this area
Those skilled in the art, according to thought of the present utility model, there will be changes, comprehensive in specific embodiments and applications
Upper described, this specification content should not be construed as to limitation of the present utility model.
Claims (6)
1. a kind of boiler smoke fine particle sampling pretreatment device, described device include：Sampling gun, impinger, institute
The opium pipe for the sampling gun stated, which has, is placed in the bringing-up section that is sampled in flue, it is characterised in that the opium pipe being placed in outside flue is
Receive and be in charge of.
2. boiler smoke fine particle sampling pretreatment device as claimed in claim 1, it is characterised in that described sampling gun
Bringing-up section and receive to be in charge of and be formed in one.
3. boiler smoke fine particle sampling pretreatment device as claimed in claim 1, it is characterised in that described receiving is in charge of
External diameter 10mm, internal diameter 6mm.
4. a kind of boiler smoke sampling gun, the opium pipe of described sampling gun has the bringing-up section for being placed in and being sampled in flue, its
It is characterised by, the opium pipe being placed in outside flue is in charge of to receive.
5. boiler smoke sampling gun as claimed in claim 4, it is characterised in that the bringing-up section of described sampling gun and receiving is in charge of
It is formed in one.
6. boiler smoke sampling gun as claimed in claim 4, it is characterised in that external diameter 10mm is in charge of in described receiving, and internal diameter is
6mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720499716.XU CN206725279U (en) | 2017-05-05 | 2017-05-05 | Boiler smoke fine particle sampling pretreatment device and sampling gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720499716.XU CN206725279U (en) | 2017-05-05 | 2017-05-05 | Boiler smoke fine particle sampling pretreatment device and sampling gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206725279U true CN206725279U (en) | 2017-12-08 |
Family
ID=60510232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720499716.XU Active CN206725279U (en) | 2017-05-05 | 2017-05-05 | Boiler smoke fine particle sampling pretreatment device and sampling gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206725279U (en) |
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2017
- 2017-05-05 CN CN201720499716.XU patent/CN206725279U/en active Active
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