CN206002439U - Molecular absorption spectrometer using gas-liquid separation membrane - Google Patents

Molecular absorption spectrometer using gas-liquid separation membrane Download PDF

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Publication number
CN206002439U
CN206002439U CN201620896107.3U CN201620896107U CN206002439U CN 206002439 U CN206002439 U CN 206002439U CN 201620896107 U CN201620896107 U CN 201620896107U CN 206002439 U CN206002439 U CN 206002439U
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gas
separation membrane
liquid separation
reactor
detector
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吴得福
高心岗
隋宗斌
铁振平
王强
熊思
李洪杰
张丹
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QINGDAO JIAMING MEASUREMENT AND CONTROL TECHNOLOGY Co Ltd
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QINGDAO JIAMING MEASUREMENT AND CONTROL TECHNOLOGY Co Ltd
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Abstract

A kind of molecular absorption spectrometer of employing gas-liquid separation membrane, including reactor, detector.Gas-liquid separation membrane is installed in the inner chamber of the reactor, the inner chamber of reactor is separated into the first reaction chamber and the second reaction chamber by the gas-liquid separation membrane up and down.First reaction chamber is connected by transfer pipeline with the inner chamber of detector.Second reaction chamber is connected with sampling device and carrier gas device.The detector is provided with light source and can receive the detection means of the light that light source sends.After so that water sample to be measured is reacted in reactor with reagent using the molecular absorption spectrometer of gas-liquid separation membrane, directly pass through gas-liquid separation membrane, water in the gas that reaction is produced is filtered, and gas-liquid separation membrane is located in reactor, so that reaction unit is combined with drying device, be enormously simplify system, equipment operation is simple, it is easy to miniaturization and the portable design of instrument, on-site measurement can be carried out to testing sample, increased the range of instrument.

Description

Molecular absorption spectrometer using gas-liquid separation membrane
Technical field
The utility model is related to water quality monitoring technical field, a kind of molecule of utilization macromolecule gas-liquid separation membrane of specific design Absorption spectrometer.
Background technology
Water resource is the most important natural resources of the mankind, is the primary condition that the mankind depend on for existence and development.In recent years with That water resource pollution is increasingly serious, water quality monitoring, as the basic work in water pollution control work, is water environment management, dirt The control of dye source, environmental planning etc. provide scientific basis, to whole water environment protection, water pollution control and safeguard water environment health Aspect plays vital effect.
Water analysis index subjet is various, because the different detection methods of purposes are also different.Gas-phase molecular absorption spectrometry Method (Gas-Phase Molecular Absorption Spectrometry, hereinafter referred to as GPMAS) is according to water sample component to be measured The gas concentration of decomposition follows Lamber-Beer's Law (Beer-Lambert Law) this principle with feature optical absorption intensity to survey Determine the quantitative analysis of water pollutant composition.
Ammonia nitrogen (NH is being determined using GPMAS3- N), nitrate nitrogen (NO3- N) etc. water pollutant when, by sample and reagent (titanium trichloride) injects a mixing reactor, and the component to be measured that realizes in 70 DEG C of environment above in liquid phase is converted to gas, After dry eliminating water by gas eliminating water after send into measuring system.
In order to effectively the component to be measured in liquid phase is converted to gas by chemical reaction, gas is made from liquid phase sample Separate and measuring system is loaded into, current instrument includes sampling device, heater, reaction unit, drying device, inspection mostly Survey device, cleaning device, air mix facilities.And the drying device for adopting is drier or semiconductor refrigerating de-watering apparatus mostly, Drier absorbs easily hardened or make moist after moisture, causes the permeability of gas to be deteriorated, and then produces impact, needs on measurement result Often change.Using semiconductor refrigerating eliminating water, as reactant liquor reacts at relatively high temperatures, therefore in order to reach effectively refrigeration Water removal effect, needs the refrigerating plant of relatively high power, and the gas produced in cooling procedure is readily adsorbed on tube wall, impact inspection Survey precision.Therefore, the major defect of this molecular absorption spectrometer device is that device structure is complicated, complex operation, scavenging period Long, need a large amount of deionized waters, volume and power consumption larger and not portable, it is impossible to meet the need of live outdoor environment monitoring Ask.
Utility model content
The utility model is directed to current molecular absorption spectrometer appliance arrangement complex structure, needs dry dress is separately configured Put, volume and power consumption are larger, and not portative problem, propose a kind of molecular absorption spectrometer of employing gas-liquid separation membrane.
The molecular absorption spectrometer of employing gas-liquid separation membrane of the present utility model, including reactor, detector.
Gas-liquid separation membrane is installed in the inner chamber of the reactor, the inner chamber of reactor is divided by the gas-liquid separation membrane up and down It is divided into the first reaction chamber and the second reaction chamber.
First reaction chamber is connected by transfer pipeline with the inner chamber of detector.
Second reaction chamber is connected with sampling device and carrier gas device.
The detector is provided with light source and can receive the detection means of the light that light source sends.
Preferably, the detector two ends are respectively arranged with air inlet and exhaust outlet, the air inlet and transfer pipeline It is connected, the exhaust outlet is connected with purifier.
Preferably, the light source and detection means are located at the two ends of detector respectively.
Preferably, first reaction chamber is provided with gas outlet, and the gas outlet is provided with leaving air control valve.
Preferably, the transfer pipeline is provided with delivery control valve.
Preferably, having heaters is installed in second reaction chamber.
Preferably, on the injection port that the second reaction chamber is arranged, the injection port is filled the heater with sample introduction Put connected.
Preferably, second reaction chamber is provided with leakage fluid dram, and the leakage fluid dram is connected with bat liquid pump.
The beneficial effects of the utility model are:Water sample to be measured and reagent are made using the molecular absorption spectrometer of gas-liquid separation membrane After reacting in reactor, directly pass through gas-liquid separation membrane, the water in the gas that reaction is produced is filtered, and gas-liquid separation membrane In reactor, so that reaction unit is combined with drying device, system is enormously simplify, equipment operation is simple, is easy to instrument Miniaturization and portable design, on-site measurement can be carried out to testing sample, increased the range of instrument.Divided using gas-liquid From film eliminating water drier the most, any dried medium or gas dewatering device need not be reused, water rem oval is high, reduce to be measured The tube wall absorption of gas, improves the service life of instrument, and determination data precision is more preferably.
The air inlet of detector and exhaust positioned at two ends, under test gas longer time for enabling reaction to produce in detector Interior flowing, it is ensured that the accuracy of gas detection.The waste gas that detector is discharged is sent into after being purified by purifier in air, it is to avoid Detection operation is polluted.
The light source of detector and detection means also are located at two ends, maximize the scope of light distribution, carry from another point of view The high accuracy of gas detection.
First reaction chamber arranges the gas outlet of leaving air control valve control, can be to the pressure in reactor during equipment use Power is balanced, and so that water sample to be measured and reagent is smoothly entered in reactor;Can under test gas excessive concentration, Gas is shunted, it is to avoid reactor pressure is excessive, cause the danger that explodes;Equipment can be made to carry out water sample detection before, The carrier gas for carrying out reactor cleaning smoothly can be entered, and the gas in reactor is discharged.
The break-make connected between delivery control valve control reactor and detector, under test gas concentration is relatively low in the reactor When, so that under test gas is enriched with the reactor, it is ensured that to send into the concentration of gas in detector, it is ensured that the essence of gas detection Degree.
Heater can be heated to water sample to be measured and reagent, accelerate reaction speed.And heater is located at injection port On, reactor is i.e. heated so that water sample to be measured and reagent has just been entered, and strengthens the effect of heatable catalytic reaction.
Liquid pump is clapped in leakage fluid dram connection, quickly can be discharged reacted waste liquid, is easy to the cleaning of reactor, then carry out Detect next time.
Description of the drawings
Accompanying drawing 1 is the structural representation of the molecular absorption spectrometer using gas-liquid separation membrane.
Specific embodiment
In order to be able to further appreciate that structure of the present utility model, feature and other purposes, in conjunction with appended preferred embodiment Detailed description is as follows, and illustrated preferred embodiment is merely to illustrate the technical solution of the utility model, and non-limiting practicality New.
Specific embodiment of the present utility model is as follows:
As shown in figure 1, including reactor 1, detector 2 using the molecular absorption spectrometer of gas-liquid separation membrane.
Gas-liquid separation membrane 3 is installed in the inner chamber of reactor 1, the inner chamber of reactor is separated into by gas-liquid separation membrane 3 up and down First reaction chamber 1.1 and the second reaction chamber 1.2.
Gas-liquid separation membrane is macromolecule gas-liquid separation membrane, and being that one kind is selective passes through film, can pass the gas through, in gas Moisture cannot then pass through.
First reaction chamber 1.1 is connected by transfer pipeline with the inner chamber of detector 1.
Second reaction chamber 1.2 is connected with sampling device 4 and carrier gas device 5.Water sample and reagent can be sent to by sampling device 4 In second reaction chamber 1.2, carrier gas device 5 then can be passed into carrier gas in the second reaction chamber 1.2, carrier gas can for high pure nitrogen or Air after purification.
Detector 2 is provided with light source 6 and can receive the detection means 7 of the light that light source 6 sends.Light source 6 adopts Zn Lamp etc. can send the light-emitting device of specific wavelength spectral line, and the light for sending is injected in the inner chamber of detector 2, is then detected by device 7 receive, and detection means 7 measures the light intensity for receiving light.
When carrying out water sample detection, by sampling device, water sample and reagent are sent in reactor 1.Water sample and reagent exist React in the second reaction chamber 1.2 in reactor 1, produce under test gas.Under test gas are produced and are enriched with to finite concentration, are reacted After being malleation in device 1, sampling device 4 is closed, carrier gas device 5 is opened, the carrier gas of high pressure is passed through into reactor 1.Carrier gas will be treated Gas ejection upwards is surveyed, by gas-liquid separation membrane 3, by the filter moisture under test gas, is then fed in detector 2.Inspection Survey the light that light source 6 is launched in device 2 to be received by detection means 7, the under test gas being passed in detector 2 connect detection means 7 The light intensity for receiving changes.The measurement signal value of device for recording and detecting 7, determines pollutant component in water sample, goes forward side by side Row quantitative analysis.
In order to improve the precision of under test gas detection, 2 two ends of detector are respectively arranged with air inlet and exhaust outlet, light source 6 and detection means 7 respectively be located at detector 2 two ends.Air inlet is connected with transfer pipeline, and exhaust outlet is connected with purifier 8.
Under test gas are entered from air inlet, are discharged from exhaust outlet so as to can be covered in detector 2 comprehensively, and light source 6 The light of injection is also while cover whole detector 2, increased under test gas affects the degree of light intensity, makes light intensity Change becomes apparent from, and is more prone to detect, and improves detection sensitivity, strengthens accuracy of detection.
After under test gas complete detection operation, purifier 8 is entered by exhaust outlet, purifier 8 will be harmful in gas Composition is filtered, and makes the gas entered in air meet discharge standard, it is to avoid atmosphere pollution.
For the pressure in balanced reaction device 1, the first reaction chamber arranges 1.1 gas outlet, and gas outlet is provided with out gas control Valve processed 9.When water sample detection is carried out, water sample and reagent are by during in reactor 1, gas outlet is beaten by leaving air control valve 9 Open, original gas in reactor 1 is released by the entrance of water sample and reagent, so that water sample and reagent is smoothly entered in reactor 1.
Before water sample detection, leaving air control valve 9 is opened, by carrier gas device 5 in reactor 1 by the load of high pressure Gas, original gas in reactor 1 is emptied by gas outlet, reactor 1 is carried out.Carrier gas travels further into detector 2 In, original gas in detector 2 is released, and cleaning is also carried out to detector 2.After carrier gas is entered and is full of detector 2, light source 6 Project photoelectricity to be received through carrier gas by detection means 7, detection means 7 records background signal, as the basic data of gas detection.
During water sample detection is carried out, when under test gas excessive concentration, leaving air control valve 9 is opened, makes a part Under test gas can be discharged by gas outlet, it is to avoid in reactor 1, pressure is excessive, explodes.
In order to control the break-make connected between reactor and detector, transfer pipeline is provided with delivery control valve 10.Anti- When answering that under test gas concentration is relatively low in device 1, delivery control valve 10 is closed, transfer pipeline is disconnected, under test gas are enable in reaction It is enriched with device 1, after under test gas reach concentration requirement, ensures delivery control valve 10 opening, under test gas are sent into detection In device 2, the under test gas concentration in entrance detector 2 is made.
When the cleaning of reactor 1 is carried out, delivery control valve 10 is closed, makes carrier gas all lead to original gas in reactor 1 Cross gas outlet emptying.After the completion of reactor 1 is cleaned, during cleaning reactor 2, delivery control valve 10 is opened, close leaving air control valve 9, so that carrier gas is fully entered in detector 2, gas in detector 2 is emptied by exhaust outlet.
In order to accelerate the reaction speed of water sample and reagent, having heaters 11 is installed in the second reaction chamber 1.2, heater 11 increases Plus temperature in reactor 1, accelerate reaction speed.Heater 11 is arranged on the injection port that the second reaction chamber 1.2 is arranged, injection port It is connected with sampling device 4, makes the water sample for just having entered from injection port and reagent that the heating of heater 11 is just received, increases further anti- Speed is answered, improves the overall efficiency of detection operation.
In order to the waste liquid in will be interior for reactor 1 is emptied, the second reaction chamber 1.2 is provided with leakage fluid dram, and leakage fluid dram is connected with bat Liquid pump 12.Clap liquid pump 12 and power is provided, accelerate the discharge of waste liquid in reactor 1.Carry out the carrier gas being passed through when reactor 1 is cleaned Original liquid in reactor 1 is discharged by leakage fluid dram, it is ensured that clean in reactor 1, in order to water sample detection next time is carried out, protect Demonstrate,prove the accuracy of water sample detection next time.

Claims (8)

1. a kind of molecular absorption spectrometer of employing gas-liquid separation membrane, it is characterised in that including reactor (1), detector (2),
Gas-liquid separation membrane (3) is installed in the inner chamber of reactor (1), gas-liquid separation membrane (3) are by the inner chamber of reactor First reaction chamber (1.1) and second reaction chamber (1.2) are separated into up and down,
First reaction chamber (1.1) are connected by transfer pipeline with the inner chamber of detector (2),
Second reaction chamber (1.2) are connected with sampling device (4) and carrier gas device (5),
Detector (2) are provided with light source (6) and can receive the detection means (7) of the light that light source (6) sends.
2. the molecular absorption spectrometer of employing gas-liquid separation membrane according to claim 1, it is characterised in that the detector (2) two ends are respectively arranged with air inlet and exhaust outlet, and the air inlet is connected with transfer pipeline, and the exhaust outlet is connected with purification Device (8).
3. the molecular absorption spectrometer of employing gas-liquid separation membrane according to claim 1 and 2, it is characterised in that the light Source (6) and detection means (7) are located at the two ends of detector (2) respectively.
4. the molecular absorption spectrometer of employing gas-liquid separation membrane according to claim 1, it is characterised in that described first is anti- Chamber (1.1) is answered to be provided with gas outlet, the gas outlet is provided with leaving air control valve (9).
5. the molecular absorption spectrometer of the employing gas-liquid separation membrane according to claim 1 or 4, it is characterised in that described defeated Send pipeline that delivery control valve (10) is installed.
6. the molecular absorption spectrometer of employing gas-liquid separation membrane according to claim 1, it is characterised in that described second is anti- Answer in chamber (1.2) and having heaters (11) is installed.
7. the molecular absorption spectrometer of employing gas-liquid separation membrane according to claim 6, it is characterised in that the heater (11) on the injection port that the second reaction chamber (1.2) is arranged, the injection port is connected with sampling device (4).
8. the molecular absorption spectrometer of employing gas-liquid separation membrane according to claim 1, it is characterised in that described second is anti- Chamber (1.2) is answered to be provided with leakage fluid dram, the leakage fluid dram is connected with bat liquid pump (12).
CN201620896107.3U 2016-08-17 2016-08-17 Molecular absorption spectrometer using gas-liquid separation membrane Active CN206002439U (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106092937A (en) * 2016-08-17 2016-11-09 青岛佳明测控科技股份有限公司 Use the molecular absorption spectrometer of gas-liquid separation membrane

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106092937A (en) * 2016-08-17 2016-11-09 青岛佳明测控科技股份有限公司 Use the molecular absorption spectrometer of gas-liquid separation membrane

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