CN106018006A - Gas sampling pretreatment system - Google Patents
Gas sampling pretreatment system Download PDFInfo
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- CN106018006A CN106018006A CN201610527167.2A CN201610527167A CN106018006A CN 106018006 A CN106018006 A CN 106018006A CN 201610527167 A CN201610527167 A CN 201610527167A CN 106018006 A CN106018006 A CN 106018006A
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- gas
- separator
- pretreatment system
- pipe
- capillary flow
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N1/2205—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with filters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/40—Concentrating samples
- G01N1/4077—Concentrating samples by other techniques involving separation of suspended solids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N2001/2282—Devices for withdrawing samples in the gaseous state with cooling means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/40—Concentrating samples
- G01N1/4077—Concentrating samples by other techniques involving separation of suspended solids
- G01N2001/4088—Concentrating samples by other techniques involving separation of suspended solids filtration
Abstract
The invention relates to a gas sampling device, in particular to a gas sampling pretreatment system. The gas sampling pretreatment system comprises a sampling probe, a first capillary flow limiter and a condensation, separation and purification device which are communicated in sequence. The first capillary flow limiter is used for limiting the flow of fluid flowing to the condensation, separation and purification device from the sampling probe. The first capillary flow limiter can limit the flow of gas samples, so that gas sample emission is reduced, and resource waste is relieved; the installed condensation, separation and purification device can effectively remove harmful impurities in gas samples, so that pollution to the environment is relieved, and meanwhile damage to an analysis system is relieved. The gas sampling pretreatment system is suitable for collection and purification treatment of various gas samples like coarse coal gas.
Description
Technical field
The present invention relates to gas sampling assembly, especially relate to a kind of gas sampling pretreatment system.
Background technology
Gas on-line analysis system is widely used at chemical industry, for production process and the control of chemical industry, improves
Product quality, operation is instructed to provide important means and foundation.The component content of various mixing gas sample is analyzed in on-line analysis continuously
And list and one-component content, make production control more accurate, it is achieved the optimization of production and maximizing the benefits.
But the gas sample majority taked is to carry out in the environment of higher temperatures and higher pressure, and a lot of course of reaction is all deposited
Contain fine dust particles or containing phenomenons such as condensable Organic substances in gaseous fluid, cause blocking and the damage of sampling apparatus,
And in sampling process, owing to on-line analysis point is many, sampling flow big, occur in that cost increases and the phenomenon of the wasting of resources,
Such as, at a ripe methanol or Ammonia Production line, being distributed about 50 to 150 gas on-line analysis points, year, total gas sample disappeared
Consumption cost is more than 2,000,000 yuan, and the raw cost for wastewater treatment of gross annual output is more than 500,000 yuan, and causes substantial amounts of toxic and harmful to be arranged
Put.
Summary of the invention
It is an object of the invention to provide a kind of gas sampling pretreatment system, to solve gas present in prior art
The discharge capacity of sampling is big, containing large particulate matter in gas sample, causes the technical problem that the wasting of resources and analytical equipment damage.
The gas sampling pretreatment system that the present invention provides, including: sampling probe, the first capillary flow restrictor and condensation point
From purifier；Sampling probe, the first capillary flow restrictor and condensation separation purifier are sequentially communicated；First capillary tube current limliting
Device flows into the flow of the fluid in condensation separation purifier for limited samples probe.
Further, gas sampling pretreatment system also includes the second capillary flow restrictor and return channel；Sampling probe passes through
Return channel and the connection of the first capillary flow restrictor, the port of export of return channel is clean with condensation separation also by the second capillary flow restrictor
Gasifying device connects.
Further, return channel is return filter；Return filter includes reflux vessel and filter element；Filter element is arranged on backflow
The port of container, the lower end of filter element is empty.
Further, gas sampling pretreatment system, also include expanding condensing tube；First capillary flow restrictor and the second capillary
Pipe current limiter connects with expanding condensing tube, expands condensing tube and connects with condensation separation purifier.
Further, condensation separation purifier include gas-liquid separator, cooling separator, reflux splitter, essence adsorber,
Ceramic filter, relief valve, surge tank, by-pass gauge and multiple automatic drain device；Gas-liquid separator, cooling separator, return
Stream separator, ceramic filter and essence adsorber are sequentially communicated；Relief valve it is additionally provided with on gas-liquid separator；Expand condensing tube
Connect with gas-liquid separator；By-pass gauge it is additionally provided with between gas-liquid separator and cooling separator；Gas-liquid separator and cold
But separator is all communicated with an automatic drain device；Ceramic filter also connects with surge tank.
Further, condensation separation purifier also includes self-cleaning filter, expands condensing tube and passes through self-cleaning filter
Connect with gas-liquid separator.
Further, self-cleaning filter includes gas-liquid mixed instrument, distributed washing instrument, backflow separator, overflow pipe and water
Tube sealing；The outlet of gas-liquid mixed instrument and the inlet communication of distributed washing instrument；The outlet of distributed washing instrument and backflow separator
Connection；The outlet of backflow separator connects with gas-liquid separator；The upper end of overflow pipe connects with distributed washing instrument, and overflow pipe
It is arranged in parallel with distributed washing instrument；The outside of overflow pipe be cased with close water sealing (sealing water) pipe, overflow pipe lower ending opening and water seal
There is gap the bottom of pipe；The upper outlet connected with wastewater collection pipe it is provided with on the sidewall of water sealing (sealing water) pipe, and standby with low pressurized water seal
Lower outlet with mouth connection.
Further, distributed washing instrument includes sluicing pipe and multiple distribution grid；Sluicing pipe is the body of closed at both ends, and washes
The upper end washing pipe connects with backflow separator, and its lower end connects with gas-liquid mixed instrument；Multiple distribution grids, from top to bottom, parallel
Every be arranged in sluicing pipe.
Further, condensation separation purifier also includes washing oil scrubber, and reflux splitter is by scrubber and pottery mistake
Filter connects.
Further, gas sampling pretreatment system also includes cyclone separator and secondary sampling probe, secondary sampling probe
One end be located in the overfall of cyclone separator, the other end and the first capillary flow restrictor connection；Sampling probe and eddy flow
The charging aperture connection of separator；The underflow opening of cyclone separator is for original gas pipeline connection.
The gas sampling pretreatment system that the present invention provides, uses the first capillary flow restrictor can limit the flow of gas sample,
Reduce gas sample discharge, decrease the waste of resource；Having in gas sample can effectively be removed by the condensation separation purifier installed
Evil impurity, reduces the pollution of environment, reduces the damage to the system of analysis simultaneously.It is applicable to the various gas sample acquisitions such as raw gas
Purified treatment.
Accompanying drawing explanation
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, below will be to specifically
In embodiment or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not paying creative work
Put, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
The gas sampling pretreatment system overall schematic that Fig. 1 provides for the embodiment of the present invention；
The schematic diagram of the return filter of the gas sampling pretreatment system that Fig. 2 embodiment of the present invention provides；
The schematic diagram of the self-cleaning filter of the gas sampling pretreatment system that Fig. 3 embodiment of the present invention provides；
The schematic diagram of the cyclone separator of the gas sampling pretreatment system that Fig. 4 embodiment of the present invention provides.
Reference:
11-the first capillary flow restrictor；12 second capillary flow restrictors；
13-three capillary current limiter；
211-the first automatic valve；212-the second automatic valve；213-the 3rd automatic valve；
214-the 4th automatic valve；
31-wastewater collection pipe；32-gas sample collecting pipe；
4-gas pipeline；5-sampling probe；51-level sampling probe；
6-return channel；61-return filter；62-cyclone separator；
611-filter element 612-reflux vessel
7-expands condensing tube；
8-condensation separation purifier；81-gas-liquid separator；82-automatic drain device；
83-cooling separator；84-essence adsorber；85-ceramic filter.
86-by-pass gauge；87-relief valve；88-reflux splitter
89-surge tank；
9-self-cleaning filter；91-gas-liquid mixed instrument；92-distributed washing instrument；
93-refluxes separator；94-overflow pipe；95-water sealing (sealing water) pipe；
The standby mouth of the low pressurized water seal of 96-；921-distribution grid；
A-flusher；B-purges collection device；C-gas sample collection device
D-wastewater treatment equipment.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme is clearly and completely described, it is clear that described enforcement
Example is a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under not making creative work premise, broadly falls into the scope of protection of the invention.
In describing the invention, it should be noted that term " " center ", " on ", D score, "left", "right", " vertically ",
Orientation or the position relationship of the instruction such as " level ", " interior ", " outward " they are based on orientation shown in the drawings or position relationship, merely to
Be easy to describe the present invention and simplifying describe rather than instruction or the hint device of indication or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.Additionally, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that indicate or hint relative importance.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " is installed ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be fixing connection, it is also possible to be to removably connect, or be integrally connected；Can
To be mechanical connection, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, can understand that above-mentioned term is at this with concrete condition
Concrete meaning in invention.
The gas sampling pretreatment system overall schematic that Fig. 1 provides for the embodiment of the present invention, as it is shown in figure 1, this enforcement
The gas sampling pretreatment system that example provides, including: sampling probe the 5, first capillary flow restrictor 11 and condensation separation purify dress
Put 8；Sampling probe the 5, first capillary flow restrictor 11 and condensation separation purifier 8 are sequentially communicated；First capillary flow restrictor
11 are used for limited samples probe 5 flows into the flow of the fluid in condensation separation purifier 8.
Wherein, the size range of the internal diameter of the capillary tube selected by the first capillary flow restrictor 11 is 0.1-3mm, external diameter
Size range is 1-4mm, and the size range of length is 50-4000mm.With specific reference to system pressure and dust granules in gas sample
Size determines.Capillary tube is the small-bore pipe of regulation, by relying on flow resistance to produce pressure drop along its length, controls
The flow of gas sample, thus serve the effect of current limliting, additionally, capillary tube also has expansion cooling and the effect of voltage stabilizing.
Sampling probe 5 extends in gas pipeline 4 by the outer wall port of gas pipeline 4, the bore of sampling probe 5 by
The diameter of gas pipeline 4 determines, the size range of sampling probe 5 bore is 15-108mm, is 1/ of diameter at gas pipeline 4
Between 10-1/5.Sampling probe 5 extends to the optional position of gas pipeline 4, it is preferred that the distance extended is gas pipeline
Between the 1/4-1/3 of the internal diameter of 4 so that it is in sampling process can refluxing portion particulate matter, and gas sample is representative.
The purpose of condensation separation purifier 8 is that the impurity substances in gas sample is separated and filtered, then passes through waste water
The process of processing means D, reduces the discharge of waste water.Meanwhile, make gas sample cleanliness factor meet the requirement of analysis system, alleviate or keep away
Exempt from it is caused damage and destroys.
The gas sampling pretreatment system that the present embodiment provides, for the gas sample containing low dust, uses the first capillary tube limit
Stream device 11, can limit the flow of gas sample, thus solve the problem that gas sample discharge capacity is big, meanwhile, and capillary tube cheap,
Therefore, decrease the waste of resource and reduce cost；The condensation separation purifier 8 simultaneously installed can effectively go degasification
Objectionable impurities in sample, reduces the pollution of environment, it addition, reduce the damage to the system of analysis.
On the basis of above-described embodiment, further, the gas sampling pretreatment system that the present embodiment provides also includes the
Two capillary flow restrictors 12 and return channel 6；Sampling probe 5 is connected with the first capillary flow restrictor 11 by return channel 6, return channel
The port of export of 6 connects with condensation separation purifier 8 also by the second capillary flow restrictor 12.
Being shaped as of return channel 6 is multiple, such as, spherical or cylindrical, it is considered to the area of dissipation of spherical return channel 6 is big,
Particulate matter backflow resistance is little, it is preferred that select spherical return channel, it can control the flow of gas sampling, makes in gas sample low solidifying
Point impurity constantly condenses after gathering in return channel 6, returns to gas pipeline 4, decreases the impurity that gas sample is taken out of, alleviates pre-
Processing system processes the load of gas sample.
The gas sampling pretreatment system that the present embodiment provides also includes three capillary current limiter 13 and flusher A；
Flusher A is connected with the port of export of return channel 6 by three capillary current limiter 13, can be rinsed return channel 6, can
To ensure the clean of return channel 6.
The gas sampling pretreatment system that the present embodiment provides, uses return channel 6 that the impurity of part in gas sample can be made to return
Flowing to, in gas pipeline 4, decrease the input of gas flow, make discharge capacity reduce, the setting of the second capillary flow restrictor 12 can
To solve under device is in low voltage situations, the first capillary flow restrictor 11 can not meet the demand of device, needs the second capillary
The auxiliary of pipe current limiter 12, both carry gas sample jointly, to meet the demand of device.
As it is shown in figure 1, on the basis of above-described embodiment, further, gas sampling pretreatment system also includes expanding
Condensing tube 7；First capillary flow restrictor 11 connects with expanding condensing tube 7 with the second capillary flow restrictor 12, expands condensing tube 7 again
Connect with condensation separation purifier 8.
The effect expanding condensing tube 7 is that gas sample condensation is condensed into liquid by portion gas, takes away the heat of part, makes gas
The temperature of sample reduces, and expanding condensing tube 7 can play the effect of buffering with the speed of mitigation of gases flow simultaneously.
On the basis of above-described embodiment, further, gas sampling pretreatment system also include sampling controller and
Relevant control valve, the panel of gas sample controller has the five of respectively start and stop, constant temperature, blowback, flushing and low-pressure channel
Individual function.
Wherein, as it is shown in figure 1, the first automatic valve 211 is arranged between return channel 6 and the first capillary flow restrictor 11, and
It is connected with purging collection device B；Second automatic valve 212 is arranged between return channel 6 and the second capillary flow restrictor 12；First mao
Capillary flow restrictors 11 connects with the 3rd automatic valve 213 with the second capillary flow restrictor 12, and the 3rd automatic valve 213 condenses with expanding again
Pipe 7 connects；4th automatic valve 214 is arranged on three capillary current limiter 13 and connects with flusher A；Gas sample controller respectively with
Each automatic valve and the first capillary tube current limliting connect, and wherein gas sample controller can control the temperature of the first capillary flow restrictor 11
Degree.
In gas sampling normal processes, gas sample sequentially passes through first automatic valve the 211, first capillary flow restrictor 11 and the 3rd
Automatic valve 213, enters and expands in condensing tube 7, carry out gas sample circulation, and wherein the first capillary flow restrictor 11 serves control flow
Effect.
In Regulation of Constant Temperature, the first capillary flow restrictor 11 connects temperature incubation function, can make the first capillary tube current limliting
Device 11 is heated to the temperature specified, and stops heating, makes capillary tube be in the state of constant temperature all the time, thus prevent gas sample from condensing
With the phenomenon of blocking, it is also prevented from gas sample generation chemical reaction simultaneously.
In blowback program process, according to presetting cycle or interval time, carry out regularly automatic back blow, open anti-
Fetching sequence, gas sample is automatic by second automatic valve the 212, second capillary flow restrictor 12, three capillary current limiter 13 and first
Valve 211, arrives the floss hole of purging collection device B, it is ensured that gas sample circulation is smooth and easy, does not blocks.
In backwashing procedures, presetting cycle or interval time, start backwashing function, flushing water is through four selfs
Dynamic valve 214 and three capillary current limiter 13, be carried out return channel 6；When system air pressure reaches setting value, open low pressure
Passage, the second automatic valve 212 starts, and gas sample by the first capillary flow restrictor 11 and the second capillary flow restrictor 12, is entered respectively
Entering to expand condensing tube 7, this function serves protective effect to whole gas sampling pretreatment system.
On the basis of above-described embodiment, further, condensation separation purifier 8 includes gas-liquid separator 81, cooling
Separator 83, reflux splitter 88, essence adsorber 84, ceramic filter 85, relief valve 87, surge tank 89, by-pass gauge 86
With multiple automatic drain devices 82；Gas-liquid separator 81, cooling separator 83, reflux splitter 88, ceramic filter 85 and essence
Adsorber 84 is sequentially communicated；It is additionally provided with relief valve on gas-liquid separator 81；First capillary flow restrictor 11 and gas-liquid separator
81 connections；By-pass gauge 86 it is additionally provided with between gas-liquid separator 81 and cooling separator 83；Gas-liquid separator 81 and cooling
Separator 83 is all communicated with an automatic drain device 82；Ceramic filter 85 also connects with surge tank 89.
Wherein, the type of gas-liquid separator 81 is multiple, such as gravitational settling gas-liquid separator, split flow gas-liquid separator or
Person's centrifugal gas-liquid separator, it is considered to cost of manufacture and simple in construction, preferably gravitational settling gas-liquid separator, simultaneously in order to change
The shortcoming that its separation efficiency kind is low, the inner chamber at gas-liquid separator 81 is provided with filter element.The effect of gas-liquid separator 81 is water
The gas-liquid separation of colloidal sol shape is opened, and makes gas sample enter cooling separator 83, and the liquid of separation is discharged to give up by automatic drain device 82
In water treatment facilities D.
It addition, arrange by-pass gauge 86 can strengthen bypass flow, improve and analyze response speed, monitor gas sample simultaneously
Changes in flow rate, after system exceedes the pressure of regulation, relief valve 87 starts pressure release, and part gas sample is carried by gas sample collecting pipe 32
In gas sample collection device C.
Cooling separator 83 is the temperature by reducing gas sample, makes the oil cooling of the vaporous water in gas sample and gaseous state be converted into
Liquid condition, thus play centrifugation, equally, the liquid of separation is discharged to wastewater treatment equipment D by automatic drain device 82
In.
Reflux splitter 88 is segregation apparatus, is that make in gas sample is cold in order to make gas sample after by reflux splitter 88
Lime set body, is back to after gathering in cooling separator 83.
Ceramic filter 85 is the device that a kind of essence filters, can be to the little granule dust in gas sample and the chemical combination of macromole
Thing filters, and connects with surge tank 89, play cushioning effect intrinsic pressure to device, and can discharge waste liquid timely.
It is provided with the absorbent such as absorbent cotton in essence adsorber 84, the Hydrocarbon of residual is adsorbed.
The gas sampling pretreatment system that the present embodiment provides, the gas that low for dust content, tar content is low, humidity is high
Body, wherein, the gas-liquid separator 81 of setting, cooling separator 83, ceramic filter 85 and essence adsorber 84 can be for gas sample
In different impurities separate and discharge, make the high purification of gas sample, the analysis to gas sample causes minor impact；Set simultaneously
Put relief valve 87 and by-pass gauge 86, made staff that traffic conditions to be had and clearly monitor, timely unnecessary gas
Sample is discharged in gas sample collection device C, makes device the safest；And this device is provided with wastewater treatment equipment D, the most permissible
The gas got rid of is processed timely, reduces the discharge of waste water, make device more environmental protection.
The schematic diagram of the return filter of the gas sampling pretreatment system that Fig. 2 provides for the embodiment of the present invention.Such as Fig. 2 institute
Showing, on the basis of above-described embodiment, further, return channel 6 can be return filter 61.Return filter 61 includes backflow
Container 612；At filter element 611 reflux vessel 612, filter element 611 lower end is empty.
Wherein, filter element 611 material of return filter 61, such as, rustless steel, pottery or resin, it is contemplated that refluxed
Filter 61 is coarse filter device, filters oarse-grained dust, it is preferred that select rustless steel.
It can be multiple that the filter element 611 of return filter 61 accounts for the ratio of reflux vessel 612, it is preferred that select institute's accounting
The 1/2 of the volume of return filter 61, its work process is that part gas sample refluxes in reflux vessel 612, reduces one
The large particulate matter of point gas sample returns in gas pipeline 4, by the part gas sample in filter element 611, has the bulky grain of part equally
Being filtered, the composition making gas sample is cleaner.
The gas sampling pretreatment system that the present embodiment provides, and the gas of relatively dampness higher for dust content.Should
Gas sample enters return filter 61, refluxes and filters, the bulky grain thing in this gas sample can being filtered.
It addition, the schematic diagram of the self-cleaning filter of gas sampling pretreatment system that Fig. 3 provides for the embodiment of the present invention.
As it is shown on figure 3, on the basis of above-described embodiment, further, condensation separation purifier 8 also includes self-cleaning filter 9,
Expand condensing tube 7 to be connected with gas-liquid separator 81 by self-cleaning filter 9.
Wherein, self-cleaning filter 9 includes gas-liquid mixed instrument 91, distributed washing instrument 92, backflow separator 93, overflow pipe
94 and water sealing (sealing water) pipe 95；The outlet of gas-liquid mixed instrument 91 and the inlet communication of distributed washing instrument 92；Going out of distributed washing instrument 92
Mouth connects with backflow separator 93；The outlet of backflow separator 93 connects with gas-liquid separator 81；The upper end of overflow pipe 94 with point
Cloth washing instrument 92 connects, and overflow pipe 94 be arranged in parallel with distributed washing instrument 92；The outside of overflow pipe 94 is cased with water sealing (sealing water) pipe
95, overflow pipe 94 the bottom of lower ending opening and water sealing (sealing water) pipe 95 have gap；It is provided with on the sidewall of water sealing (sealing water) pipe 95 and receives with waste water
The upper outlet of collector 31 connection, and the lower outlet that mouth standby with low pressurized water seal 96 connects.
Distributed washing instrument 92 includes sluicing pipe and multiple distribution grid 921；Sluicing pipe is the body of closed at both ends, and washing
The upper end of pipe connects with backflow separator 93, and its lower end connects with gas-liquid mixed instrument 91；Multiple distribution grids, from top to bottom, parallel
Being arranged in sluicing pipe of interval.
Multiple hole it is provided with, hole a diameter of multiple, it is preferred that be 1-8mm on distribution grid 921.Distribution grid 921 can make
The gas sample entering distributed washing instrument 921 is evenly distributed, and makes gas sample sufficiently have an effect with detergent, makes impurity be dissolved in washing
In agent, thus play the effect of remove impurity.
Gas sampling pretreatment system also includes washing oil scrubber, and it is arranged on reflux splitter 88 and ceramic filter 85
Between, it is that the light oil in gas sample is carried out washing removing, makes gas sample the cleanest.
The gas sampling pretreatment system that the present embodiment provides, for relatively high temperature, high dustiness, high water capacity, height
The gas of tar content, self-cleaning filter 9 can utilize the cleaning mixture in gas sample to the Organic substance in gas sample and water solublity
Impurity carries out washing and separates, and is finally discharged to wastewater treatment equipment D, decreases or avoid newly-increased gas sample wash water amount,
Thus decrease the pollution to environment.Wherein, gas-liquid mixed instrument 91 is to separate the liquid through expansion condenser 7；Point
In cloth washing instrument 92, multiple distribution grid 921 is set, gas sample can be made to flow uniformly in distributed washing instrument 92, it is thus possible to make
Objectionable impurities is substantially dissolved in cleaning mixture, makes the harmful constituent of gas sample reduce；Backflow separator 93 can make to carry secretly in gas sample
Liquid backflow, decrease the flow of gas sample, and take away the partial heat of gas sample；Overflow pipe 94 can receive unnecessary washing
Liquid；The standby mouth of low pressurized water seal 96 arranged, be used for analyzing system demand pressure relatively low time, reduce water seal liquid level, thus drop
The force value of low system stability.
The schematic diagram of the cyclone separator of the gas sampling pretreatment system that Fig. 4 provides for the embodiment of the present invention.Such as Fig. 4 institute
Showing, on the basis of above-described embodiment, further, gas sampling pretreatment system also includes that cyclone separator 62 and secondary are adopted
Sample probe 51, one end of secondary sampling probe 51 is located in the overfall of cyclone separator 62, the other end and the first capillary tube
Current limiter 11 connects；Sampling probe 5 connects with the charging aperture of cyclone separator 62；The underflow opening of cyclone separator 62 is with original
Gas pipeline 4 connects.
Gas sample enters into cyclone separator 62 from sampling probe 5, is made the bulky grain thing in gas sample by cyclone separator 62
Matter is partially separated with gas, the part large particulate matter adjoint portion gas lower end by cyclone separator 62, has returned to gas
In body pipeline 4.Secondary sampling probe 51 carries out gas sampling again.
The gas sampling pretreatment system that the present embodiment provides, contains for high temperature, high dustiness, high water capacity, high tar
The gas of amount, carries out double sampling, filters before entering return filter 61, and can make large particulate matter part returns to gas
In body pipeline 4, make device not have blocking, make bulky grain enter raw-gas pipeline 4 simultaneously, decrease gas sampling flow row
Put the discharge with pollutant, make device more environmental protection.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, it is not intended to limit；To the greatest extent
The present invention has been described in detail by pipe with reference to foregoing embodiments, it will be understood by those within the art that: it depends on
So the technical scheme described in foregoing embodiments can be modified, or the most some or all of technical characteristic is entered
Row equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a gas sampling pretreatment system, it is characterised in that including: sampling probe, the first capillary flow restrictor and condensation
Separating purifying device；Described sampling probe, described first capillary flow restrictor and described condensation separation purifier are sequentially communicated；
Described first capillary flow restrictor flows into fluid in described condensation separation purifier for limiting described sampling probe
Flow.
Gas sampling pretreatment system the most according to claim 1, it is characterised in that also include the second capillary flow restrictor
And return channel；
Described sampling probe is connected with described first capillary flow restrictor by described return channel, and the port of export of described return channel is also
Connected with described condensation separation purifier by the second capillary flow restrictor.
Gas sampling pretreatment system the most according to claim 2, it is characterised in that described return channel is reflux and filter
Device；Described return filter includes reflux vessel and filter element；Described filter element is arranged on the port of described reflux vessel, described filter
The lower end of core is empty.
4. according to the gas sampling pretreatment system described in Claims 2 or 3, it is characterised in that also include expanding condensing tube；Institute
Stating the first capillary flow restrictor to connect with described expansion condensing tube with described second capillary flow restrictor, described expansion condensing tube is again
Connect with described condensation separation purifier.
Gas sampling pretreatment system the most according to claim 4, it is characterised in that described condensation separation purifier bag
Include gas-liquid separator, cooling separator, reflux splitter, essence adsorber, ceramic filter, relief valve, surge tank, bypass flow
Meter and multiple automatic drain devices；
Described gas-liquid separator, described cooling separator, described reflux splitter, described ceramic filter and described essence absorption
Device is sequentially communicated；Described relief valve it is additionally provided with on described gas-liquid separator；Described expansion condensing tube and described gas-liquid separator
Connection；
Described by-pass gauge it is additionally provided with between described gas-liquid separator and described cooling separator；Described gas-liquid separator and
Described cooling separator is all communicated with a described automatic drain device；Described ceramic filter also connects with described surge tank.
Gas sampling pretreatment system the most according to claim 5, it is characterised in that described condensation separation purifier is also
Including self-cleaning filter, described expansion condensing tube is connected with described gas-liquid separator by described self-cleaning filter.
Gas sampling pretreatment system the most according to claim 6, it is characterised in that described self-cleaning filter includes gas
Liquid mixed instrument, distributed washing instrument, backflow separator, overflow pipe and water sealing (sealing water) pipe；
The outlet of described gas-liquid mixed instrument and the inlet communication of described distributed washing instrument；The outlet of described distributed washing instrument with
Described backflow separator connects；The outlet of described backflow separator connects with described gas-liquid separator；
The upper end of described overflow pipe connects with described distributed washing instrument, and described overflow pipe is parallel with described distributed washing instrument
Arrange；The outside of described overflow pipe is cased with the water sealing (sealing water) pipe closed, the lower ending opening of described overflow pipe and the bottom of described water sealing (sealing water) pipe
There is gap；The upper outlet connected with wastewater collection pipe, and mouth standby with low pressurized water seal it is provided with on the sidewall of described water sealing (sealing water) pipe
The lower outlet of connection.
Gas sampling pretreatment system the most according to claim 7, it is characterised in that described distributed washing instrument includes washing
Wash pipe and multiple distribution grids；Described sluicing pipe is the body of closed at both ends, and the upper end of described sluicing pipe separates with described backflow
Instrument connects, and its lower end connects with gas-liquid mixed instrument；Multiple described distribution grids, from top to bottom, wash described in being arranged on of parallel interval
Wash in pipe.
Gas sampling pretreatment system the most according to claim 5, it is characterised in that described condensation separation purifier is also
Including washing oil scrubber, described reflux splitter is connected with described ceramic filter by described washing oil scrubber.
10. according to the gas sampling pretreatment system described in claim 1-3, any one of 5-9, it is characterised in that also include rotation
Stream separator and secondary sampling probe, one end of described secondary sampling probe is located in the overfall of described cyclone separator,
The other end connects with described first capillary flow restrictor；Described sampling probe connects with the charging aperture of described cyclone separator；Institute
State the underflow opening of cyclone separator for original gas pipeline connection.
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| CN201610527167.2A CN106018006B (en) | 2016-07-06 | 2016-07-06 | Current limliting reflow type gas sampling clarifier |
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| CN201610527167.2A CN106018006B (en) | 2016-07-06 | 2016-07-06 | Current limliting reflow type gas sampling clarifier |
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| CN106018006B CN106018006B (en) | 2019-03-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596202A (en) * | 2016-12-30 | 2017-04-26 | 华测检测认证集团股份有限公司 | Dioxin sampling device |
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| US6058789A (en) * | 1994-03-26 | 2000-05-09 | Kohsaka; Hiroji | Sampling device for gas analyzers |
| US20020137196A1 (en) * | 2001-03-23 | 2002-09-26 | The Regents Of The University Of California | Sample preparation and detection device for infectious agents |
| CN204439422U (en) * | 2015-03-12 | 2015-07-01 | 中海福建天然气有限责任公司 | A kind of LNG on-line period system |
| CN205785976U (en) * | 2016-07-06 | 2016-12-07 | 李常山 | Current limliting reflow type gas sampling depurator |
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- 2016-07-06 CN CN201610527167.2A patent/CN106018006B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6058789A (en) * | 1994-03-26 | 2000-05-09 | Kohsaka; Hiroji | Sampling device for gas analyzers |
| US20020137196A1 (en) * | 2001-03-23 | 2002-09-26 | The Regents Of The University Of California | Sample preparation and detection device for infectious agents |
| CN204439422U (en) * | 2015-03-12 | 2015-07-01 | 中海福建天然气有限责任公司 | A kind of LNG on-line period system |
| CN205785976U (en) * | 2016-07-06 | 2016-12-07 | 李常山 | Current limliting reflow type gas sampling depurator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106596202A (en) * | 2016-12-30 | 2017-04-26 | 华测检测认证集团股份有限公司 | Dioxin sampling device |
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| CN106018006B (en) | 2019-03-15 |
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