CN105784889A - Rapid analysis system and method of crude fuel gas tar content - Google Patents
Rapid analysis system and method of crude fuel gas tar content Download PDFInfo
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Abstract
The invention discloses a rapid analysis system of crude fuel gas tar content. The rapid analysis system comprises a filter, a six-way valve, a vacuum pump, a gas meter, an FID detector, a signal amplifier, a recording instrument, and carrier gas He or N2. The invention also provides a rapid analysis method of crude fuel gas tar content. According to the rapid analysis method, at sample injection state, the temperature of a sampling ring of the six-way valve is set to be 3 to -10 DEG C, the temperature of the rest pipelines and devices is maintained to be higher than 250 to 350 DEG C, so that tar of the crude fuel gas is absorbed on a quantitation ring via condensation adsorption; at analysis state, the temperature of the FID detector is maintained to be higher than 300 to 400 DEG C, and the temperature of the rest pipeline and devices is increased to 250 to 350 DEG C, so that desorption of tar on the quantitation ring is realized with increasing of the temperature, and gaseous tar is delivered into the FID detector by the carrier gas He or N2 for quantitative analysis. According to the rapid analysis system, integration of the quantitation ring system and the FID detector is realized; complex steps in the prior art such as solvent dissolving and evaporation are avoided; appearance time ranges from 0.2 to 1.0min; and crude fuel gas tar content on-line rapid analysis is realized.
Description
Technical field
The present invention relates to the System and method for that the thick gas tar oil content of a kind of gasification of biomass is quickly analyzed, the system and method for especially a kind of tar on-line measurement.
Background technology
Tar content is the important physical characteristic parameter weighing the thick combustion gas quality of gasification of biomass, quickly also this parameter of Accurate Determining is conducive to staff to understand the operating conditions of gasification furnace, and arrives best gasification efficiency and efficiency of carbon con version with this operating parameter regulating gasification furnace；Also help the tar purifying effect evaluating thick adhesion in time, especially when downstream combustion gas utilize equipment to tar content requirement higher time, reduction tar measure accordingly can be taked in advance, thus avoid that tar brings such as various adverse effects such as blocking pipeline, etching apparatus, murder by poisoning catalyst.
Up to now, the tar having 2 classes important samples-analysis method, and namely 1) first adopt liquid flux the tar condensing in combustion gas；Or 2) adopt after solid material tar adsorption, the sample collected adopts gravimetric method or gas chromatogram to be analyzed:
1) liquid flux absorption process: the method adopts 3-6 GAS ABSORPTION bottle, places bead and organic solvent in absorption bottle, be equipped with vacuum pump to extract the thick combustion gas of 30-500L from combustion gas main line, and the tar in thick combustion gas is by organic solvent institute condensed absorbent.Again the organic solvent having adsorbed tar is evaporated completely, weigh the quality that namely residue after evaporation is tar.Its shortcoming is in that complex steps, analyzes a tar sample and needs 2-3h consuming time；And the process of solvent evaporation unavoidably occurs that tar loses, the moisture in this outer air is likely to and causes error, so measurement result is inaccurate.
2) solid phase adsorption method: this is filled in glass tubing after γ-aminopropylsilane is bonded in the surface of silica gel particle, as the solid absorbent materials of thick gas tar oil.The thick combustion gas volume gathered is 100-500mL, after having sampled, with dichloromethane and isopropanol, it is washed dissolving successively, then adopts gas chromatogram to carry out quantitative analysis.Its shortcoming is in that when being used for thick gas flow be 1000Nm3The occasion of/h, the finite volume of solid phase adsorption glass tubing, thick gas recovery small volume, certainty of measurement is not high；Additionally tar needs experience solvent wash process after being adsorbed in solid phase material, and process of therefore analyzing is consuming time longer, it is difficult to meets and quickly analyzes requirement online.
Summary of the invention
For above-mentioned deficiency, an object of the present invention is in that to provide a kind of thick gas tar oil content quick analysis system, it is by the sampling/analysis system of six-way valve and quantitative loop composition, tar rapid condensation in thick combustion gas is adsorbed and quickly adds thermal desorption, the requirement that tar content is quickly analyzed online can be met.
For achieving the above object, the present invention adopts the technical scheme that:
The quick analysis system of a kind of thick gas tar oil content, comprising: filter, is used for filtering dust contained by thick combustion gas；Six-way valve and quantitative loop, for thick gas tar oil condensation adsorption/desorption；Vacuum pump, is used for making thick combustion gas overcome filter resistance to flow to gas meter；Gas meter, for the metering of thick combustion gas cumulative volume；Fid detector, for obtaining in thick combustion gas the analysis result of contained quality of coke tar, and is displayed by monitor after analysis result being amplified by signal amplifier；Carrier gas He or N2, enter fid detector for the gaseous state tar carried secretly under desorption six-way valve quantitative loop；Wherein, six-way valve by gas piping respectively with quantitative loop, carrier gas He or N2, filter, vacuum pump and fid detector connect, six-way valve is also connected with a six-way valve switching switch for controlling six-way valve state.
Described quantitative loop is connected between the IIth port and the Vth port of six-way valve, described filter, carrier gas He or N2, fid detector, vacuum pump be connected to the Ith port of six-way valve, the IIIth port, the IVth port, the VIth port.
When six-way valve is placed in sample introduction state by described six-way valve switching switch, the Ith port of described six-way valve passes sequentially through the IIth port, quantitative loop, the Vth port and the connection of the VIth port, the IIIth port of described six-way valve and the connection of the IVth port.
When six-way valve is placed in sample introduction state by described six-way valve switching switch, except six-way valve condenses the tar condensing system China and foreign countries in 3 to-10 DEG C, all the other runner pipes and device are all incubated in the temperature environment of 300 ± 50 DEG C.
When six-way valve is placed in analysis state by described six-way valve switching switch, the Ith port of described six-way valve and the VIth port connect, and the IIIth port of described six-way valve passes sequentially through the IIth port, quantitative loop, the Vth port and the connection of the IVth port.
When six-way valve is placed in analysis state by described six-way valve switching switch, being placed in except the temperature environment of 350 ± 50 DEG C except fid detector, all the other runner pipes and device are placed in the temperature environment of 300 ± 50 DEG C.
A signal amplifier is connected between described fid detector, monitor.
The dust of diameter 1 μm is had the removal efficiency of 99.99% by described filter.
One in filling adsorption material such as molecular sieve, activated carbon in described quantitative loop, or it is not filled with adsorbing material, it is only one section of blank pipe.Quantitative loop is provided with condensation and heater element, quantitative loop can be made after supporting temperature control element can be cooled to rapidly 3 to-10 DEG C when condensation, can be brought rapidly up to 300 DEG C ± more than 50 DEG C when heating, it is beneficial to the coal-tar middle oil quick adsorption in quantitative loop of thick combustion gas and desorption, to reach the quickly requirement (1-5min) of tar sampling-analysis.
Another object of the present invention is to provide a kind of thick gas tar oil content rapid analysis method, it is by the sampling/analysis system of six-way valve and quantitative loop composition, tar rapid condensation in thick combustion gas is adsorbed and quickly adds thermal desorption, the requirement that tar content is quickly analyzed online can be met.
A kind of rapid analysis method of thick gas tar oil content, it comprises the following steps:
Step 1, setting up the quantitative analysis standard curve that the quality of coke tar of a certain known quantity is corresponding with going out peak area size, and according to described quantitative analysis standard curve fit linear equation m=f (A), wherein m is quality of coke tar, A is peak area；
Step 2, six-way valve being placed in by six-way valve switching switch sample introduction state, thick combustion gas flows through emptying after filter, the Ith port, the IIth port, quantitative loop, the Vth port, the VIth port, vacuum pump and gas meter, carrier gas He or N successively2Empty after flowing through the IIIth port, the IVth port, fid detector successively；
Step 3, six-way valve being placed in by six-way valve switching switch sampling state, thick combustion gas flows through emptying after filter, the Ith port, the VIth port, vacuum pump, gas meter successively；Carrier gas He or N2Empty after flowing through the IIIth port, the IIth port, quantitative loop, the Vth port, the IVth port, fid detector, the sample volume V that gas meter obtainsThick combustion gas；
Step 4, utilize fid detector that the tar in thick combustion gas is detected, obtain the peak area signal A of all tar materialThick combustion gas, according to linear equation m=f (A), calculate and obtain tar gross mass mThick combustion gas；
Step 5, the sample volume V obtained according to gas meter in step 2Thick combustion gasAnd described tar gross mass mThick combustion gas, calculating the tar content obtained in thick combustion gas is mThick combustion gas/VThick combustion gas。
When six-way valve is placed in sample introduction state by six-way valve switching switch, except six-way valve condenses the tar condensing system China and foreign countries in 3 to-10 DEG C, all the other runner pipes and device are all incubated in the temperature environment of 300 ± 50 DEG C, and the tar of thick combustion gas is condensed and is adsorbed in quantitative loop；When six-way valve is placed in analysis state by six-way valve switching switch, except fid detector is placed in the temperature environment China and foreign countries of 350 ± 50 DEG C, all the other runner pipes and device are placed in the temperature environment of 300 ± 50 DEG C, quantitative loop heating makes its interior tar desorption to 300 ± 50 DEG C, and the tar in gaseous state is at carrier gas He or N2Effect of carrying secretly under enter fid detector.
Described step 1 comprises the following steps:
The tar calibrating gas (such as table 1 below) of step 1.1, the basis thick gas tar oil composition that specifically (such as wood chip) biogas metallization processes obtains and content analysis result configuration standard series concentration, balanced gas is N2Or Ar；Adopt the mode of hand sampling respectively by 4 kinds of calibrating gas sample introductions to fid detector, gone out peak area (A accordingly, μ V*s), peak area (A is gone out accordingly according to this, μ V*s) corresponding certain quality of coke tar (m, mg) quantitative analysis standard curve (i.e. quality of coke tar and the relation curve going out peak area) is set up, then according to this quantitative analysis standard curve fit linear equation m=f (A)；
Table 1 tar calibrating gas component and content
| Composition | Calibrating gas one, mg/L | Calibrating gas two, mg/L | Calibrating gas three, mg/L | Calibrating gas two, mg/L |
| Benzene | 3500 | 1750 | 850 | 350 |
| Toluene | 1500 | 750 | 400 | 150 |
| Ethylbenzene | 500 | 250 | 150 | 50 |
| Xylol | 500 | 250 | 150 | 50 |
| Sym-trimethylbenzene. | 500 | 250 | 150 | 50 |
| Naphthalene | 900 | 450 | 200 | 90 |
| Indenes | 800 | 400 | 200 | 80 |
| Balance Air | N2Or Ar | N2Or Ar | N2Or Ar | N2Or Ar |
Step 1.2, verifying described linear equation m=f (A), the method for checking is that the gasifier of the thick gas tar oil component micro-sampling transport pump to 300 DEG C of known quality carries out gasifying (wherein, naphthalene need to use CS2Dissolve), then at carrier gas (N2Or Ar) carry down the Ith port being connected to six-way valve secretly, another road-load gas (He or N2) it is connected to the IIIth port of six-way valve, perform above-mentioned steps 2-3, the volume V of carrier gas is obtained by gas meter, utilize fid detector that each tar component is detected, obtain the peak area signal A of each tar component, according to above-mentioned linear equation m=f (A), calculate and obtain each tar component quality m, and the actual mass of this result Yu each tar component is compared.
Described tar component includes benzene, toluene, other mononuclear aromatics (indenes, dimethylbenzene, ethylbenzene, xylol, sym-trimethylbenzene .), naphthalene.
The present invention proposes quick analysis system and the method for thick gas tar oil content, and it has the advantages that:
1) quantitative loop system is utilized by the absorption of coal-tar middle oil for thick combustion gas rapid condensation and quickly to add thermal desorption.
2) high sensitivity of fid detector and the High Linear to Hydrocarbon response are utilized, at 0.1mg/Nm3-20000mg/Nm3To tar accurate quantitative analysis in scope.
3) by quantitative loop system and the fid detector system integration, saving the tedious steps such as solvent dissolving, evaporation that traditional method uses, appearance time is 0.2-1.0min, it may be achieved thick gas tar oil content on-line analysis.
Accompanying drawing explanation
Fig. 1 is assembly of the invention structural representation.
Schematic diagram when Fig. 2 is six-way valve of the present invention state to be measured.
Schematic diagram when Fig. 3 is six-way valve measuring state of the present invention.
Description of reference numerals: 1, filter；2, six-way valve；3, vacuum pump；4, gas meter；5, quantitative loop；6, fid detector；7, signal amplifier；8, monitor.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is further illustrated.
Embodiment one: various tar component analyses
Thick gas tar oil composition and content analysis that canonical biometric matter gasifying process obtains are as shown in table 2, and thick gas tar oil composition includes the gaseous mixture of tar component and carrier gas；Tar component includes benzene, toluene, other mononuclear aromatics (indenes, dimethylbenzene, ethylbenzene, xylol, sym-trimethylbenzene .), naphthalene, other double ring arene (such as biphenyl etc.), thrcylic aromatic hydrocarbon, four PAHs, the gaseous mixture of carrier gas include phenolic compound, heterocyclic compound and other, tar by this table composition preparation standard series concentration, Criterion curve, obtain quality of coke tar (m, mg)-peak area (A, μ V*s) fitting a straight line equation m=f (A), its standard variance R2=0.99904.
The thick gas tar oil composition of table 2 gasification of biomass and content
| Tar forms | Mass percent, % |
| Benzene | 37.9 |
| Toluene | 14.3 |
| Other mononuclear aromatics | 13.9 |
| Naphthalene | 9.6 |
| Other double ring arene | 7.8 |
| Thrcylic aromatic hydrocarbon | 3.6 |
| Four PAHs | 0.8 |
| Phenolic compound | 4.6 |
| Heterocyclic compound | 6.5 |
| Other | 1.0 |
Various tar components comprise main tar ingredients, such as benzene, toluene, naphthalene, indenes, dimethylbenzene, ethylbenzene, xylol, sym-trimethylbenzene. etc..Respectively the gasifier of above-mentioned tar composition micro-sampling transport pump to 300 DEG C is carried out (the naphthalene CS that gasifies2Dissolve), sample introduction is to tar quick analysis system of the present invention.
With reference to accompanying drawing 2, in the sample introduction stage, the gaseous mixture of above-mentioned tar component and carrier gas empties after flowing through filter the 1, the Ith port, the IIth port, quantitative loop the 5, the Vth port, the VIth port, vacuum pump 3 and gas meter 4 successively, carrier gas He or N2Emptying after flowing through the IIIth port, the IVth port, fid detector 6 successively, except being arranged at-10 DEG C except six-way valve 2, all the other all pipelines and device are all incubated in more than 300 DEG C, and the above-mentioned tar component in gaseous mixture is condensed and is adsorbed in quantitative loop 5.
With reference to accompanying drawing 3, emptying after the gaseous mixture of sample phase, above-mentioned tar component and carrier gas flows through filter the 1, the Ith port, the VIth port, vacuum pump 3, gas meter 4 successively；Carrier gas He or N2Empty after flowing through the IIIth port, the IIth port, quantitative loop the 5, the Vth port, the IVth port, fid detector 6, all pipelines and device heat to more than 300 DEG C, fid detector is placed in more than 350 DEG C, quantitative loop heating makes above-mentioned tar component desorption to more than 300 DEG C, and the tar component in gaseous state is at carrier gas He or N2The lower fid detector that enters of the effect of carrying secretly carry out detection and analyze.
Through fid detector, obtain peak area, appearance time data can have monitor 8 to show after signal amplifier 7, quantitative by above-mentioned linear equation m=f (A), the result obtained is as shown in table 3, from table 3, the quantitative error of above-mentioned main tar component is respectively less than 5%, and the relative standard deviation of repetition sample introduction is less than 1.6%, appearance time is about 0.5min, has good accuracy of measurement and repeatability.
Table 3 tar pure component analyzes result
Embodiment two: true thick gas tar oil quickly analyzes 1
Method according to embodiment one sets up quantitative analysis standard curve, obtains quality of coke tar (m, mg)-peak area (A, μ V*s) fitting a straight line equation mhigh=f (Ahigh), mlow=f (Alow), it is respectively used to gasification furnace and exports the tar analysis (high concentration) of thick combustion gas and purify the tar content analysis (low concentration) after technique through certain.
With reference to accompanying drawing 2, in sample phase, the thick combustion gas of gasification of biomass empties after flowing through filter the 1, the Ith port, the IIth port, quantitative loop the 5, the Vth port, the VIth port, vacuum pump 3 and gas meter 4 successively, carrier gas He or N2Emptying after flowing through the IIIth port, the IVth port, fid detector 6 successively, except being arranged at-10 DEG C except six-way valve 6, all the other all pipelines and device are all incubated in more than 300 DEG C, and the tar in the thick combustion gas of gasification of biomass is condensed and is adsorbed in quantitative loop 5.
With reference to accompanying drawing 3, in the analysis phase, the thick combustion gas of gasification of biomass empties after flowing through filter the 1, the Ith port, the VIth port, vacuum pump 3, gas meter 4 successively；Carrier gas He or N2Empty after flowing through the IIIth port, the IIth port, quantitative loop the 5, the Vth port, the IVth port, fid detector 6, all pipelines and device heat to more than 300 DEG C, fid detector is placed in more than 350 DEG C, quantitative loop heats to more than the 300 DEG C tar desorptions made in the thick combustion gas of gasification of biomass, and the tar sample in gaseous state is at carrier gas He or N2The lower fid detector that enters of the effect of carrying secretly carry out detection and analyze.
Through fid detector 6, obtaining peak area, appearance time data can have monitor 8 to show after signal amplifier 7, by above-mentioned linear equation mhigh=f (Ahigh), mlow=f (Alow) distinguish the tar content before and after quantitatively thick gas-purification, the result obtained is as shown in table 4, and from table 4, the present embodiment repeats the relative standard deviation of sample introduction less than 8.6%, it is far smaller than the measurement result of solvent absorption 55.98%, there is good accuracy of measurement.Further, solvent absorption, solid phase adsorption method all can not measure thick gas purifier outlet tar content, it was shown that the present embodiment has higher certainty of measurement, it is possible to measure mg/Nm3The tar-concentration of level.
And the present embodiment tar appearance time is about 0.5min, table 4 also list the present embodiment and analyzes comparison consuming time with conventional solvent absorption process, and from table 4, this programme single tar sample analysis is 6min consuming time altogether, it may be achieved on-line analysis.
The thick gas tar oil content measurement result contrast one of table 4
Embodiment three: true thick gas tar oil quickly analyzes 2
Method according to embodiment one sets up quantitative analysis standard curve, obtains quality of coke tar (m, mg)-peak area (A, μ V*s) fitting a straight line equation mhigh=f (Ahigh), mlow=f (Alow), it is respectively used to gasification furnace and exports the tar analysis (high concentration) of thick combustion gas and purify the tar content analysis (low concentration) after technique through certain.
Use for reference the experience that thick gas tar oil is collected in the past, adopt 3-6 only to place bead and organic solvent gas absorption bottle, in each absorption bottle, place about 100mL organic solvent, utilize the dissolution of organic solvent to collect the tar in thick combustion gas.For reducing the volatilization of solvent and increasing the solvent solution absorption effect to tar, when collecting tar, absorption bottle is placed in cryosel bath or ice-water bath and carries out.It is sequentially connected with vacuum pump, gas meter, to extract the thick combustion gas of certain volume (about about 500L) from thick combustion gas main line in the downstream of absorption bottle.
2 basic principles are followed in choosing of solvent: tar 1) has good dissolubility；2) fid detector without response or responds only small.Meeting above-mentioned 2 good solvents required is CS2。
After tar gatherer process, liquid in each absorption bottle is transferred to volumetric flask, and with solvent wash bead and absorption bottle 3 times, the solvent of washing process is also transferred in volumetric flask in the lump, from volumetric flask, draw the liquid of 1.0 μ about L with micro-sampling pin after filtration, constant volume, hand sampling is to the injection port of GC, obtain the absolute mass of single sample introduction through fid detector detection, then obtain the tar content in thick combustion gas according to the volume of constant volume volumetric flask, sample size volume, thick gas recovery volume computing.
Through fid detector, obtaining peak area, appearance time data, by above-mentioned linear equation mhigh=f (Ahigh), mlow=f (Alow) distinguish the tar content before and after quantitatively thick gas-purification, the result obtained is as shown in table 5, and from table 5, the present embodiment repeats the relative standard deviation of sample introduction less than 10.8%, it is far smaller than the measurement result of solvent absorption gravimetric method 55.98%, there is good accuracy of measurement.Further, solvent absorption, solid phase adsorption method all can not measure thick gas purifier outlet tar content, it was shown that the present embodiment has higher certainty of measurement, it is possible to measure mg/Nm3The tar-concentration of level.
And the present embodiment tar appearance time is about 0.5min, table 5 also list the present embodiment and analyzes comparison consuming time with conventional solvent absorption process, from table 5, by solvent absorption, filter constant volume Time Calculation interior, this programme single tar sample analysis is 50min consuming time altogether, can be greatly saved analysis time.
The thick gas tar oil content measurement result contrast two of table 5
Above-listed detailed description is illustrating for possible embodiments of the present invention, and this embodiment is also not used to limit the scope of the claims of the present invention, and all equivalences done without departing from the present invention are implemented or change, and are intended to be limited solely by the scope of the claims of this case.
Claims (10)
1. the quick analysis system of a thick gas tar oil content, it is characterised in that comprising:
Filter (1), is used for filtering dust contained by thick combustion gas；
Six-way valve (2), for switching gas circuit；
Vacuum pump (3), is used for making thick combustion gas overcome filter resistance to flow to gas meter (4)；
Gas meter (4), for the metering of thick combustion gas cumulative volume；
Quantitative loop (5), for thick gas tar oil condensation adsorption/desorption
Fid detector (6), for tar quantitative analysis, and is displayed analysis result by monitor (8)；
Carrier gas He or N2, the gaseous state tar being used for carrying secretly quantitative loop (5) desorption from six-way valve (2) enters fid detector (6)；
Wherein, six-way valve (2) by gas piping respectively with quantitative loop (5), carrier gas He or N2, filter (1), vacuum pump (3) and fid detector (6) connect, six-way valve (2) is also used for controlling the six-way valve switching switch of six-way valve (2) state and is connected with one.
2. quick analysis system according to claim 1, it is characterised in that described quantitative loop (5) is connected between the IIth port and the Vth port of six-way valve (2), described filter (1), carrier gas He or N2, fid detector (6), vacuum pump (3) be connected to the Ith port of six-way valve (2), the IIIth port, the IVth port, the VIth port.
3. quick analysis system according to claim 2, it is characterized in that, when six-way valve (2) is placed in sample introduction state by described six-way valve switching switch, Ith port of described six-way valve (2) connects with the IIth port, quantitative loop (5), the Vth port and the VIth port successively, and the IIIth port of described six-way valve (2) and the IVth port connect.
4. quick analysis system according to claim 3, it is characterized in that, when six-way valve (2) is placed in sample introduction state by described six-way valve switching switch, except six-way valve (2) condenses the tar condensing system China and foreign countries in 3 to-10 DEG C, remaining gas pipeline and device are all incubated in the temperature environment of 300 ± 50 DEG C.
5. quick analysis system according to claim 2, it is characterized in that, when six-way valve (2) is placed in analysis state by described six-way valve switching switch, Ith port of described six-way valve (2) and the connection of the VIth port, the IIIth port of described six-way valve (2) connects with the IIth port, quantitative loop (5), the Vth port and the IVth port successively.
6. quick analysis system according to claim 5, it is characterized in that, when six-way valve (2) is placed in analysis state by described six-way valve switching switch, except being placed in the temperature environment of 350 ± 50 DEG C except fid detector (6), all the other runner pipes and device are placed in the temperature environment of 300 ± 50 DEG C.
7. quick analysis system according to claim 1, it is characterised in that connect a signal amplifier (7) between described fid detector (6), monitor (8).
8. quick analysis system according to claim 1, it is characterised in that described quantitative loop (5) interior filling adsorption material, described adsorbing material is molecular sieve or activated carbon.
9. quick analysis system according to claim 1 carries out the rapid analysis method of thick gas tar oil content, it is characterised in that it comprises the following steps:
Step 1, setting up the quantitative analysis standard curve that the quality of coke tar of a certain known quantity is corresponding with going out peak area size, and according to described quantitative analysis standard curve fit linear equation m=f (A), wherein m is quality of coke tar, A is peak area；
Step 2, by six-way valve switching switch six-way valve (2) is placed in sample introduction state, thick combustion gas flows through filter (1), the Ith port, the IIth port, quantitative loop (5), the Vth port, the VIth port, vacuum pump (3) and gas meter (4) successively and empties afterwards, carrier gas He or N2Flow through the IIIth port successively, the IVth port, fid detector (6) empty afterwards, and gas meter (4) measures the sample volume V obtainedThick combustion gas；
Step 3, by six-way valve (2), six-way valve switching switch being placed in analysis state, thick combustion gas flows through filter (1) successively, the Ith port, the VIth port, vacuum pump (3), gas meter (4) empty afterwards；Carrier gas He or N2Flow through the IIIth port, the IIth port, quantitative loop (5), the Vth port, the IVth port, fid detector (6) empty afterwards；
Step 4, utilize fid detector (6) that the tar in thick combustion gas is detected, obtain the peak area signal A of all tar materialThick combustion gas, according to linear equation m=f (A), calculate and obtain tar gross mass mThick combustion gas；
Step 5, the sample volume V obtained according to gas meter in step 2 (4) meteringThick combustion gasAnd described tar gross mass mThick combustion gas, calculating the tar content obtained in thick combustion gas is mThick combustion gas/VThick combustion gas。
10. rapid analysis method according to claim 9, it is characterized in that, when six-way valve (2) is placed in sample introduction state by six-way valve switching switch, except six-way valve (2) condenses the tar condensing system China and foreign countries in 3 to-10 DEG C, remaining gas pipeline and device are all incubated in the temperature environment of 300 ± 50 DEG C, and the tar of thick combustion gas is condensed and is adsorbed in quantitative loop (5)；When six-way valve (2) is placed in analysis state by six-way valve switching switch, except fid detector (6) is placed in the temperature environment China and foreign countries of 350 ± 50 DEG C, remaining gas pipeline and device are placed in the temperature environment of 300 ± 50 DEG C, quantitative loop (5) heating makes its interior tar desorption to 300 ± 50 DEG C, and the tar in gaseous state is at carrier gas He or N2Effect of carrying secretly under enter fid detector (6).
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