CN108801840A - A kind of assay method of exhaust gas water capacity scene gravimetric method - Google Patents
A kind of assay method of exhaust gas water capacity scene gravimetric method Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000003556 assay Methods 0.000 title claims abstract description 10
- 238000010521 absorption reaction Methods 0.000 claims abstract description 75
- 239000007789 gas Substances 0.000 claims abstract description 70
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 239000002912 waste gas Substances 0.000 claims abstract description 9
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 40
- 238000005070 sampling Methods 0.000 claims description 40
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 20
- 235000019504 cigarettes Nutrition 0.000 abstract description 27
- 230000009102 absorption Effects 0.000 description 49
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 24
- 239000003546 flue gas Substances 0.000 description 24
- 238000005259 measurement Methods 0.000 description 23
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical class O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 9
- 239000003230 hygroscopic agent Substances 0.000 description 9
- 238000009833 condensation Methods 0.000 description 8
- 230000005494 condensation Effects 0.000 description 8
- 238000012544 monitoring process Methods 0.000 description 8
- 239000000741 silica gel Substances 0.000 description 8
- 229910002027 silica gel Inorganic materials 0.000 description 8
- 239000002253 acid Substances 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 238000005303 weighing Methods 0.000 description 7
- 239000003344 environmental pollutant Substances 0.000 description 6
- 231100000719 pollutant Toxicity 0.000 description 6
- 238000000691 measurement method Methods 0.000 description 5
- 239000013618 particulate matter Substances 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 239000001110 calcium chloride Substances 0.000 description 2
- 229910001628 calcium chloride Inorganic materials 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000010561 standard procedure Methods 0.000 description 2
- 206010008190 Cerebrovascular accident Diseases 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 241000233805 Phoenix Species 0.000 description 1
- 208000006011 Stroke Diseases 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000005686 electrostatic field Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 239000003906 humectant Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000005373 porous glass Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000012372 quality testing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
- G01N5/045—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder for determining moisture content
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Analytical Chemistry (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The present invention relates to a kind of assay methods of exhaust gas water capacity scene gravimetric method, used instrument includes the instrument box of with closure, the absorption bottle and absorption tube of interconnection, for fixing the absorption tube fixing bracket of absorption bottle and absorption tube, air inlet and gas outlet are offered on instrument container, absorption bottle and absorption tube are communicated to by the pipeline at both ends outside air inlet and gas outlet, absorption bottle and absorption tube are for accommodating absorbing liquid, it is placed with weighing-appliance in the bottom of box, the support bracket fastened bottom of absorption tube is the boss for offering through-hole, T-type holder is placed on boss, the lower part of T-type holder is stretched out from through-hole, under waste gas collecting state, absorption tube fixing bracket is fixedly connected with instrument box and T-type bracket-suspending；Under exhaust gas determination of moisture state, absorption tube fixing bracket is not connected with instrument box, and is placed on weighing-appliance by T-type branch.The present invention can improve the accuracy and convenience that useless (cigarette) gas water capacity measures.
Description
Technical field
The present invention relates to a kind of assay methods of exhaust gas water capacity scene gravimetric method.
Background technology
Useless (cigarette) gas water capacity refer in giving up (cigarette) air humidity air with a kg dry air simultaneously and the matter of vapor deposited
It measures (gram).It is the important parameter of waste gas monitoring, and the accuracy of the parametric measurement, which is directly related in exhaust gas discharge, pollutes quality testing
The accuracy of result is surveyed, GB 16157-1996 standards, which provide three kinds of methods that useless (cigarette) gas water capacity measures, gravimetric method, condensation
Method, wet and dry bulb measuring method.Occur a variety of water capacity measurement methods such as capacitance-resistance method, capacitance method, laser method, but these this year again
Method is not mature enough, and is not national standard method.
Gravimetric method, accurate relative to other methods, USA and EU is all made of standard of the gravimetric method as humidity of flue gas
Method, measurement result may participate in the calculating of pollutant emission, and the moisture content measurement of measurement with wet is not involved in pollutant emission
Calculating.
Condensation method, since the condensation water quantity generated during test is limited, so the liquid water of condenser pipe adherency determines
Water capacity measure precision, especially when in useless (cigarette) gas water capacity it is relatively low in the case of, it is this influence it is even more serious.
Measurement with wet is affected by discharge flue-gas temperature；?《Air and useless (cigarette) gas method for monitoring and analyzing》(fourth edition
2003) page 373 1. 2. illustrate this method cannot be used to survey when tested flue gas is in saturation state, delivery temperature close to 100 DEG C
Measure the water capacity of flue gas.Standard《The measurement gravimetric method of fixed source pollution object low concentration particulate matter》It is useless in HJ 836-2017
In addition to measurement with wet measures the water capacity in flue gas, corresponding description for drawing up standard page 16 " in practice due to measurement with wet
Often and practical moisture content values deviation is larger, therefore the unrequited measurement with wet of this standard ".Therefore, useless in execution stationary source
(cigarette) gas only has the selection of gravimetric method and condensation method when monitoring.
Due to useless (cigarette) gas condenser environment-friendly products phoenix feathers and unicorn horns being suitble in reality, contain so gravimetric method remains flue gas
The important method of moisture.There are moisture absorption pipes, and return laboratory to be needed to weigh for gravimetric method at present, is brought not to particle sampling
Just (automatic following sample instrument needs to input the correct constant speed tracking sampling of water capacity parametric instrument ability in useless (cigarette) gas), so,
The assay method for developing useless (cigarette) gas water capacity scene gravimetric method has important practical significance.
Invention content
In view of the above-mentioned problems, the purpose of the present invention is overcoming the shortcomings of existing method, in conjunction with useless (cigarette) gas feature, one is provided
The live water capacity gravimetric detemination method of kind.The present invention can improve the accuracy and convenience that useless (cigarette) gas water capacity measures.
Technical solution is as follows：
A kind of assay method of exhaust gas water capacity scene gravimetric method, used instrument include the instrument container of with closure
Body, the absorption bottle of interconnection and absorption tube, for fixing the absorption tube fixing bracket of absorption bottle and absorption tube, on instrument container
Air inlet and gas outlet are offered, absorption bottle and absorption tube are communicated to by the pipeline at both ends outside air inlet and gas outlet, are absorbed
Bottle and absorption tube are placed with weighing-appliance, which is characterized in that absorption tube is support bracket fastened for accommodating absorbing liquid in the bottom of box
Bottom is the boss for offering through-hole, and T-type holder is placed on boss, and the lower part of T-type holder is stretched out from through-hole, waste gas collecting
Under state, absorption tube fixing bracket is fixedly connected with instrument box and T-type bracket-suspending；Under exhaust gas determination of moisture state, absorb
Pipe fixing bracket is not connected with instrument box, and is placed on weighing-appliance by T-type branch.Determination step includes：
(1) before waste gas collecting, T-type holder is hanging together with absorption tube fixing bracket, exhaust gas sampling pipe and the instrument
Pipeline at air inlet is connected；
(2) under waste gas collecting state, exhaust gas enters from air inlet, and the moisture in gas is absorbed by liquid absorption, dry sky
Gas goes out from babinet gas outlet；
(3) under exhaust gas determination of moisture state, T-type branch erects on weighing-appliance, and the weight claimed subtracts when not sampling
The difference of original weight as acquires the weight of water in exhaust gas.
Preferably, the weighing-appliance is balance, and is provided with the facility calibrated to level.
Description of the drawings
Fig. 1：The test schematic that the present invention uses.
Fig. 2：The portable daily sample states structure chart of exhaust gas water capacity gravimetric detemination instrument of the present invention.
Fig. 3：The portable exhaust gas water capacity gravimetric detemination instrument of the present invention is weighed structure graph.
Specific implementation mode
Opening one's minds for the present invention is illustrated first below.
One, the balance for selecting carry-on coincidence measurement to require
1. it is 10 that " 5.2.4.2 sampling apparatuses and instrument g balances, d moisture absorptions pipe ", which requires acquisition amount of moisture, in GB/T 16157
Milligram, sensibility of balance are 1 milligram.It is 10% by this requirement measurement method precision.
2. using the environmental requirement condition of one thousandth balance, 20 DEG C of environment, opposite water capacity about 50% or so, test wrapper
Border is without friction, not the interference of electromagnetic field.General stationary source sampling location is extremely difficult to this condition.
Since one thousandth balance volume is not excessive portable, and the general sensibility reciprocal of electronics pocket balance is 10 milligrams in the market,
Although can solve the problems, such as it is portable, since sensibility reciprocal of weighing is ten times of standard, so, by standard method qualifications, acquire water
Component must be increased to 100 milligrams or more, can be only achieved identical measurement method precision, 10% requirement.According to electronics pocket
Balance specification：
The precision (specification) of electronics pocket balance
Frame body absorption bottle is used when due to weighing while being weighed, and total weight is adopted according to the instructions provided between 200~300 grams
When with 300 grams of range, the precision of balance is 0.1 gram.So to keep measurement method precision 10%, it is necessary to acquire 1 gram mass
Water.
About 10% -15% or so, (flue gas uses heat recovery skill to humidity of flue gas through practical measurement gas fired-boiler
Art can remove a certain amount of moisture).Such flue gas is calculated by 10% water capacity, to acquire 1 gram or so of concrete water quality,
Need acquisition to give up (cigarette) gas standard state volume 12.4L, wherein the partial volume of vapor be 1.24L (according under standard state,
1mol (18 grams) vapor institute possessive volume is 22.4L, i.e., 1 gram of water vapour institute possessive volume is 1.24L).So when flue gas contains
For moisture about at 3%, to obtain the water of 1 gram weight will acquire standard state smoke behavior body about 41.3L.When work is determined
The sampling flow of state is 1L/min, and the sampling time needed is by following formula[1]It calculates：
In formula：--- working condition sampling flow, L/min；
Vnd --- standard state sampling volume, L/min；
Ba --- atmospheric pressure, Pa；(taking 101.3Pa)
Pr --- pressure before flowmeter, Pa；(approximation takes 6.5KPa)
Tr --- temperature before flowmeter, DEG C；(approximation takes 20)
T --- sampling time, min.
WhenFor 1L/min, when humidity of flue gas is 10%.The sampling time needed is 14min.When humidity of flue gas is
The sampling time 45min needed when 3%.
Therefore regulation is measured as combustion gas (boiler-furnace) water capacity：Sampling flow 1L/min, sampling time 14min.It is coal-fired
(boiler-furnace) water capacity is measured as：Sampling flow 1L/min, sampling time 45min.It can ensure to acquire water in this condition
1 gram of weight, by electronics pocket balance weigh 200 can be above precision be 0.1 gram, measurement method precision=0.1 gram/1 ×
The requirement of 100%=10%.
Two, the good hygroscopic agent of selection moisture absorption efficiency
For the collection capacity of moisture in flue gas, make the realization of acquisition water in design " one ", the absorbing liquid of selection is preferably
It is enough to absorb moisture in flue gas 100%.Pure phosphoric acid is middle strong acid, has high moisture absorption efficiency, neither to other sour gas
It absorbs and does not generate chemical reaction again.So preferred phosphoric acid carries out the measurement of moisture absorption efficiency.Test method such as Fig. 1：
As shown in Figure 1, by analysis pure phosphoric acid be placed in 50 milliliters of porous glass plate absorption bottles, and with the moisture absorption bottle equipped with silica gel
Series connection, measurement with weight method measure silica gel moisture absorption bottle weightening, can calculate first order absorption tube for vapor
Absorption efficiency,
1. assay method is placed in the built-in 20 milliliters of distilled water of glass absorption bottle in 90 DEG C of water baths, sent out as humid air
Source of students.It generating vapor and carries out two-stage moisture absorption by upper workflow graph, the first order is the phosphoric acid of experiment, and the second level is silica gel, to
Test the moisture absorption efficiency of phosphoric acid absorption tube.Sampling flow is 1L/min, 10 minutes sampling times.
Test result：Weight is 149.87 grams before the sampling of phosphoric acid absorption bottle, is increased weight 152.97 grams after sampling, and 3.1 grams of difference (is inhaled
Receive the weight of water), it is 9.9 liters (MH300 flue gas samplers are quoted automatically) that sampler, which measures sampling volume Vnd,.It is absorbed by phosphoric acid
The moisture weight that pipe absorbs calculates the humid air water capacity (Xsw) that steam evaporator generates, formula (2):
Note：The quality of aqueous vapor is 1 gram under 1.24L standard state.
Experiment measures, the silicone tube connected thereafter, 128.5 grams of weight before sampling, 128.5 grams of weight after sampling, it was demonstrated that water occurs
The moisture that device generates all is absorbed by the first order, absorption efficiency 100% (absorptive capacity is under the conditions of 3.1 grams).
2. the test of phosphoric acid absorption tube absorptive capacity, the former absorption bottle after being sampled with first time repeat 1. secondary experiment, with inspection
Look into the absorbent capacity of phosphoric acid.
Moisture absorption pipe weighs 152.97 grams before sampling, and first 128.5 grams of silicone tube sampling, other experimental conditions are the same as 1..
Test result：
Second of experiment phosphoric acid absorption bottle increases weight 156.45-152.97=3.48 grams, and sampler record sampling volume Vnd is
9.89 liters, acquisition moisture total weight, 3.1+3.48=6.58 grams.2. secondary experiment silica gel moisture absorption pipe increases weight 0.01 gram.
Total moisture absorption efficiency
Conclusion：Hygroscopic agent is made using analysis pure phosphoric acid, there is very high moisture absorption efficiency, the wet pipe sampling of single suction can be used completely
It can be obtained 99.7% collecting efficiency.
According to data check.Phosphoric acid also has further advantage as hygroscopic agent, phosphoric acid be middle intensity acidic group this to acid after burning
Gas；SO2、CO2、NO2Gas will not absorb substantially, this characteristic is used for the absorption of vapor in combustion product gases.Than frequent
The silica gel used has the characteristics that select hygroscopic agent.The hygroscopic agent of some physical actions, although also can effectively absorb gas sample
Moisture, but also have an absorption to the other components coexisted, especially interference is more when pollutant concentration before flue gas is not administered is big
Add significantly, therefore, hygroscopic agent is made better than traditional silica gel, calcium chloride moisture sorption effect using phosphoric acid.
In practical applications as moisture must absorb, absorption water, which obtains efficiency, also can slowly decline, and such as 1. absorptivity is for experiment
100%, hydroscopicity drops to 99.7% in experiment 2., but phosphoric acid is fixed acid, as long as carrying out heating in laboratory removes it
It can also continue to use after middle water.Therefore can not no spent acid generation.
Three, the interference protection measure of portable useless (cigarette) gas water capacity gravimetric method detector
Weighing operation must assure that balance is in horizontality, this instrument is mounted with red plumb line, adjusts before weighing
Three adjusted leveling screws on pedestal make red line be located at observation center of circular hole, and at this moment instrument is in horizontality, according still further to day
Flat operating method carries out weighing operation.
Influence of the environment apoplexy to weighing, after covering balance upper cover, it is gentle complete together with holder part by title absorption bottle
Portion is in the obturator of detector, can effectively prevent the influence that wind-force symmetrically weighs in environment.
Electronics pocket balance is piezoelectricity induction type balance, and the electrostatic field weighing results of environment seriously affect, in instrument
Trial-manufacturing process finds general organic glass and plastics, has electrostatic interference to balance.It (is applied using special antistatic tamper resistant material
Have the organic glass of antistatic film) after, it solves the influence of instrument itself and external electric field, meets the item of exhaust gas in-site measurement
Part.
Four, the main object of the present invention and application field
Useless (cigarette) gas water capacity, is the important parameter of waste gas monitoring, the accuracy of the parametric measurement is directly related to exhaust gas
The accuracy of contaminant detection results in discharge, especially in particulate matter (PM10And PM2.5) water capacity should be measured first in sampling
And parallel pipe sampling instrument is inputted, it could correctly implement tracking sampling, therefore the measurement of water capacity is i.e. accurately timely again.
《The measurement of useless (cigarette) gas water capacity scene gravimetric method》It solves in useless (cigarette) gas monitoring of previous stationary source not
The problem of live capable of promptly and accurately providing water capacity data.Wet and dry bulb give up (cigarette) although gas analyzer can on-site measurement give up (cigarette)
Gas water capacity.But because measuring condition requires harshness, by 836-2017 standard cancellations of HJ, therefore (cigarette) gas water capacity of giving up is measured
Method, only condensation method, gravimetric method.And condensation method because rinse condenser pipe inwall can adsorb certain liquid water plus condensation water quantity it is small,
Lead to measurement accuracy difference result inaccuracy and is eliminated.
This method has selected excellent hygroscopic agent, uses advanced portable balance, has innovated condensed water and has reabsorbed skill
Art applies New Antistatic Materials, and by multinomial advanced technology set, this method is made to be more applicable for live monitoring by hand,
It is measured for useless (cigarette) gas of stationary source, practicable technological means is provided.
The present invention is had following excellent compared with prior art using portable useless (cigarette) gas water capacity gravimetric detemination instrument
Point：
(1) small, it is easy to operate, it can be carried to working site, (cigarette) gas water capacity of giving up directly is measured, can obtain at the scene
Moisture content measurement.Improving standard GB/T16157,5.2.4 section --- gravimetric method needs sample to take back measurement in lab
Deficiency.Improve particulate matter, useless (cigarette) throughput monitoring efficiency and the accuracy for monitoring quality.
(2) using phosphoric acid as novel hygroscopic agent, there is, selection efficient to moisture absorption in (cigarette) gas that gives up to absorb strong spy
Point.After phosphoric acid absorbs certain moisture, it can be reused by dehydration, not generate spent acid.
The hygroscopic agent of some physical actions, although can also effectively absorb the moisture of gas sample, to other groups coexisted
Dividing also has absorption, and especially when pollutant concentration before flue gas is not administered is big, interference is more notable, therefore, is inhaled using phosphoric acid
Humectant moisture sorption effect is better than traditional silica gel, calcium chloride.And phosphoric acid is fixed acid, as long as carrying out heating in laboratory removes it
It can also continue to use after middle water, not the generation of spent acid.
(3) sampling cost is saved with the mode of simple possible, is not necessarily to extra power auxiliary sampling process, solves wet flue gas
In the condensation problem of sampling pipe and sampling soft air-guide pipe when acquisition.Traditional method of sampling is using heating pipeline, this needs existing
The load that field has power larger not only increases the cost of water capacity measurement, also increases burden to Site Detection.This measurement side
Method can by flue gas moisture and the moisture that is condensate in pipeline fully absorb, ensure the accurate and reliable of data.
(4) whole components of the device are all made of special antistatic interfering material, solve instrument itself and external electric field
It influences, and due to the simplicity of structure and the standard universal of all components, does not need any complicated processing, it is light-weight, just
In transport, economic cost generally is relatively low, and not will produce any type of waste.
The portable exhaust gas water capacity gravimetric detemination instrument used below to the present invention is described in detail.
Referring to Fig. 2 and Fig. 3, the portable exhaust gas water capacity gravimetric detemination instrument of the present invention, including 14 parts, specially
1. silica gel hose；2. gas outlet；3. plumb line；4. absorbing liquid；5. absorption bottle bracket fixing bolt；6. vertical；7. plumb datum
Point；8. horizontal adjustment screw；9. the instrument container of with closure；10. air inlet；11. absorption bottle；12. absorption tube fixing bracket；
13.T type holders；14. balance.
The device is under flue gas acquisition state as shown in Fig. 2, absorption bottle 11 passes through silica gel hose 1 and babinet air inlet 10
It is connected with gas outlet 2, bracket fixing bolt 5 is tightening state, and T-type holder 13 is hanging, and flue gas enters from air inlet 10, gas
In moisture absorbed liquid 4 absorb, dry air goes out from babinet gas outlet 2.
The device is under flue gas determination of moisture state as shown in figure 3, the air inlet 10 and outlet of absorption bottle 11 and babinet
Mouth 2 disconnects, and the absorption bottle bracket fixing bolt 5 of babinet both sides unscrews, and T-type holder 13 is stood on balance 14, and absorption bottle 11 passes through T
Type holder 13 is contacted with balance 14.When plumb line 3 is perpendicular to the ground, i.e., when vertical 6 is opposite with plumb datum point 7, balance 14
In horizontality, the weight claimed subtracts the difference of original weight when not sampling, as acquires the weight of water in flue gas.Generation
Enter humidity of flue gas gravimetric method calculating formula (3)：
In formula：The weight of Gw --- moisture, g；
Xsw --- water capacity in useless (cigarette) gas, %；
Vnd --- the mark post volume of acquisition gas, L；
1.24 --- 1 gram of liquid water is converted into the volume under standard state, L.
It can be obtained the water capacity Xsw of useless (cigarette) gas.
Bibliography：[1]《Particulate matter measures and the gaseous pollutant method of sampling in Concentration in Fixed Pollutants Source》GB16157-
1996。
Claims (3)
1. a kind of assay method of exhaust gas water capacity scene gravimetric method, used instrument include with closure instrument box,
The absorption bottle and absorption tube of interconnection, for fixing the absorption tube fixing bracket of absorption bottle and absorption tube, opened on instrument container
Equipped with air inlet and gas outlet, absorption bottle and absorption tube are communicated to by the pipeline at both ends outside air inlet and gas outlet, absorption bottle
With absorption tube for accommodating absorbing liquid, it is placed with weighing-appliance in the bottom of box, which is characterized in that the support bracket fastened bottom of absorption tube
Portion is the boss for offering through-hole, and T-type holder is placed on boss, and the lower part of T-type holder is stretched out from through-hole, waste gas collecting shape
Under state, absorption tube fixing bracket is fixedly connected with instrument box and T-type bracket-suspending；Under exhaust gas determination of moisture state, absorption tube
Fixing bracket is not connected with instrument box, and is placed on weighing-appliance by T-type branch.Determination step includes：
(1) before waste gas collecting, T-type holder is hanging together with absorption tube fixing bracket, the air inlet of exhaust gas sampling pipe and the instrument
Pipeline at mouthful is connected；
(2) under waste gas collecting state, exhaust gas enters from air inlet, and the moisture in gas is absorbed by liquid absorption, dry air from
Babinet gas outlet goes out；
(3) under exhaust gas determination of moisture state, T-type branch erects on weighing-appliance, and the weight claimed subtracts original when not sampling
The difference of weight as acquires the weight of water in exhaust gas.
2. assay method according to claim 1, which is characterized in that the weighing-appliance is balance, and is provided with pair
The facility that level is calibrated.
3. assay method according to claim 1, which is characterized in that the absorbing liquid is phosphoric acid.
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3445051A1 (en) * | 1984-12-11 | 1986-06-12 | VGU Dr. Volker Grumbrecht GmbH, 5270 Gummersbach | Process for the continuous determination of the water vapour content of exhaust gases |
| EP1850110A1 (en) * | 2006-04-25 | 2007-10-31 | Mettler-Toledo AG | Measuring device for gravimetric moisture determination |
| CN201159713Y (en) * | 2008-03-06 | 2008-12-03 | 武汉钢铁(集团)公司 | Measuring apparatus for waste gas water content in industry stove |
| CN201653616U (en) * | 2010-03-18 | 2010-11-24 | 常州市环境监测中心站 | Tester for resistance force of absorption bottle |
| CN102937618A (en) * | 2012-10-26 | 2013-02-20 | 河北省电力公司电力科学研究院 | Post-desulphurization flue gas moisture content determination method and apparatus |
| CN204556455U (en) * | 2015-04-14 | 2015-08-12 | 西安热工研究院有限公司 | The measurement mechanism of a kind of coal-burning boiler PM2.5 and PM10 |
| CN204807413U (en) * | 2015-07-24 | 2015-11-25 | 南京信息工程大学 | Flue gas moisture measuring device based on condensation weighting method |
| CN205080020U (en) * | 2015-10-27 | 2016-03-09 | 天纺标检测科技有限公司 | Fabrics moisture evaporation rate testing arrangement |
| CN106586931A (en) * | 2016-12-23 | 2017-04-26 | 上海东富龙科技股份有限公司 | Non-contact type on-line weighing mechanism |
| CN206618220U (en) * | 2017-04-07 | 2017-11-07 | 江苏君信新华安全科技有限公司 | A kind of fast equipment for drying of U-shaped fritted glass disk bubbler |
| CN206740456U (en) * | 2017-03-31 | 2017-12-12 | 华测检测认证集团股份有限公司 | Protection device for air sampler |
| CN207231621U (en) * | 2017-08-16 | 2018-04-13 | 广州西唐机电科技有限公司 | Weighing device |
| CN207351837U (en) * | 2017-09-28 | 2018-05-11 | 海南电网有限责任公司电力科学研究院 | A kind of Fume moisture test device |
-
2018
- 2018-06-08 CN CN201810589153.2A patent/CN108801840A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3445051A1 (en) * | 1984-12-11 | 1986-06-12 | VGU Dr. Volker Grumbrecht GmbH, 5270 Gummersbach | Process for the continuous determination of the water vapour content of exhaust gases |
| EP1850110A1 (en) * | 2006-04-25 | 2007-10-31 | Mettler-Toledo AG | Measuring device for gravimetric moisture determination |
| CN201159713Y (en) * | 2008-03-06 | 2008-12-03 | 武汉钢铁(集团)公司 | Measuring apparatus for waste gas water content in industry stove |
| CN201653616U (en) * | 2010-03-18 | 2010-11-24 | 常州市环境监测中心站 | Tester for resistance force of absorption bottle |
| CN102937618A (en) * | 2012-10-26 | 2013-02-20 | 河北省电力公司电力科学研究院 | Post-desulphurization flue gas moisture content determination method and apparatus |
| CN204556455U (en) * | 2015-04-14 | 2015-08-12 | 西安热工研究院有限公司 | The measurement mechanism of a kind of coal-burning boiler PM2.5 and PM10 |
| CN204807413U (en) * | 2015-07-24 | 2015-11-25 | 南京信息工程大学 | Flue gas moisture measuring device based on condensation weighting method |
| CN205080020U (en) * | 2015-10-27 | 2016-03-09 | 天纺标检测科技有限公司 | Fabrics moisture evaporation rate testing arrangement |
| CN106586931A (en) * | 2016-12-23 | 2017-04-26 | 上海东富龙科技股份有限公司 | Non-contact type on-line weighing mechanism |
| CN206740456U (en) * | 2017-03-31 | 2017-12-12 | 华测检测认证集团股份有限公司 | Protection device for air sampler |
| CN206618220U (en) * | 2017-04-07 | 2017-11-07 | 江苏君信新华安全科技有限公司 | A kind of fast equipment for drying of U-shaped fritted glass disk bubbler |
| CN207231621U (en) * | 2017-08-16 | 2018-04-13 | 广州西唐机电科技有限公司 | Weighing device |
| CN207351837U (en) * | 2017-09-28 | 2018-05-11 | 海南电网有限责任公司电力科学研究院 | A kind of Fume moisture test device |
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