CN209460084U - A kind of biomass gas tar oil consistently online measuring system - Google Patents
A kind of biomass gas tar oil consistently online measuring system Download PDFInfo
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- CN209460084U CN209460084U CN201821999200.2U CN201821999200U CN209460084U CN 209460084 U CN209460084 U CN 209460084U CN 201821999200 U CN201821999200 U CN 201821999200U CN 209460084 U CN209460084 U CN 209460084U
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Abstract
The utility model relates to a kind of biomass gas tar oil consistently online measuring system and measurement methods, belong to biomass gas tar oil content measurement technical field.Biomass gas tar oil consistently online measuring system, fuel gas inlet end are connected with the inlet end of gas-solid separator；The outlet side of gas-solid separator is connected with the inlet end of fire arrester；The outlet side of fire arrester is connected by valve group with the inlet end of combustion chamber；The outlet side of combustion chamber is connected with the inlet end of heat exchanger；The outlet side of heat exchanger is connected by pumping with gas vent；The outlet side of tar condenser is connected by check valve with the inlet end of combustion chamber；The outlet side of pump is equipped with measuring system, and measuring system is powered by stirling generator, and valve and gas-solid separator are kept the temperature by heat exchanger quantity of heat given up.The utility model is measured using quality minusing with two methods of density minusing, and obtains the final content data of tar using the unequal precision measurement method of weighting, improves the precision and reliability of consistently online measurement.
Description
Technical field
The utility model relates to a kind of biomass gas tar oil consistently online measuring systems, belong to biomass gas tar oil and contain
Measurement technique field.
Background technique
Biological mass combustable gas (mainly for gasification gas and carbonization gas) central gas supply and generation technology are alleviating crops straw
Stalk burns, improves environment, energy structure adjustment aspect in rural area is pushed to have unique advantage and broad prospect of application.In recent years gradually
The energy crisis and problem of environmental pollution highlighted proposes the sustainability and spatter property of traditional biomass gasification and retorting technique
Higher requirement.Therefore, gasify and the biological mass combustable gas of destructive distillation generation has to pass through purification, purified biomass is flammable
Gas must satisfy central gas supply station construction criteria, and (NYJ/T09-2005 standard-tar and dust impurity content should be less than 30mg/
m3) and internal combustion engine biomass for generating electricity gas tar oil content should be less than 50mg/m3Requirement, if gas tar oil is exceeded, it will cause
The blocking of steam line and gas metering instrument reduces generator life, to guarantee central gas supply and biomass for generating electricity combustion gas
Quality meets above-mentioned requirements, it is necessary to carry out long-term, consistently online to the tar content in biological mass combustable gas and monitor.
The method that tar content measurement generallys use is quality minusing, i.e. the matter of measurement biological fuel gas condensation front and back
Amount, difference is quality of coke tar.The method for being suitable for the measurement of online tar content at present is that biomass gasification gas tar oil content is fast
Fast mensuration (ZL200810152963.8).The biomass gasification gas tar oil content Fast Measurement Method of the disclosure is provided with heating
Set is in gaseous state with tar during guaranteeing, but gas-solid separator fails to Fine Particles are clean, and tar gas is in high temperature
Under using fine grained as the nuclei of condensation, and on fine grained occur out-phase condensation, be adhered in instrument be mainly tar separation before biology
Matter burning line upper volume flowmeter and mass flowmenter, long-term online use will lead to instrument measurement accuracy continuous decrease,
It can not on-line calibration；Measurement reliability is poor.If frequently replacement volume flowmeter and mass flowmenter cause consistently online measurement at
This raising.External heat energy consumption simultaneously also improves measurement cost.
Utility model content
The utility model needle be on-line measurement be installed under the conditions of long-time service, have keep measurement process reliability,
The characteristics of accuracy of stability and measurement data, provides a kind of biomass gas tar oil consistently online measuring system and measurement
Method.
The utility model uses lower technical solution:
Biomass gas tar oil consistently online measuring system described in the utility model, fuel gas inlet end and gas solid separation
The inlet end of device is connected；The outlet side of gas-solid separator is connected with the inlet end of fire arrester；The outlet side of fire arrester passes through valve
The inlet end of Men Zuyu combustion chamber is connected；The outlet side of combustion chamber is connected with the inlet end of heat exchanger；The outlet of heat exchanger
End is connected by pumping with gas vent, and the valve group is made of valve I and valve II；The outlet side of the valve I
It is connected with the inlet end of combustion chamber；The outlet side of valve II is connected with the inlet end of tar condenser；Tar condenser goes out
Gas end is connected by check valve with the inlet end of combustion chamber；The outlet side of pump is equipped with measuring system, and measuring system is sent out by Stirling
Motor is powered.
Biomass gas tar oil consistently online measuring system described in the utility model, the heat exchanger distinguish thermal energy
It conducts to gas-solid separator, valve I, valve II and stirling generator.
Biomass gas tar oil consistently online measuring system described in the utility model, further include acquisition system, processing with
Controller, display；The acquisition system and measuring system carries out signal transmission；The signal output end of acquisition system and processing
It is connected with the signal receiving end of controller；The data of processing are shown result by display by processing and controller.
Biomass gas tar oil consistently online measuring system described in the utility model, the stirling generator difference
Electric energy is provided for acquisition system, processing and controller, display.
Biomass gas tar oil consistently online measuring system described in the utility model, the measuring system is interior to be equipped with matter
Measure flowmeter, volume flowmeter and elaterometer.
The measurement method of biomass gas tar oil consistently online measuring system described in the utility model, steps are as follows:
1), all devices are completed in connection, are opened equipment biological fuel gas from fuel gas inlet and are entered gas-solid separator, removing is solid
Biological fuel gas after body particulate matter passes through fire arrester；
2), divide two-way by two groups of valves from fire arrester and in time alternately input biological fuel gas into closed insulation
Combustion chamber full combustion；
3) high-temperature gas, generated after full combustion in combustion chamber enters pump after over-heat-exchanger cools down, with laggard
Enter measuring system to measure, the gas after measurement is discharged from gas vent；
4), the data that measuring system will test are handled with controller by processing and feed back to display.
The measurement method of biomass gas tar oil consistently online measuring system described in the utility model, the step 4)
The calculation method of middle data processing are as follows:
(1) quality minusing is used, the mass flow data by the biological fuel gas of valve I are calculated and passes through valve II
Biological fuel gas mass flow data between difference；By the difference divided by the biomass obtained by volume flowmeter measurement
Combustion gas volume flow data, obtain tar content C in combustion gasa；
(2) density minusing is used, the elaterometer measurement data by valve I and the gas by valve II are calculated
Difference between densimeter measurement data obtains tar content C in combustion gasb。
(3) using the unequal precision measurement method of weighting by obtaining tar content value:
ma- subtraction data weight of poor quality, mb- density contrast subtraction data weight.
The measurement method of biomass gas tar oil consistently online measuring system described in the utility model, in biological fuel gas
Gas-solid separator and two groups of valves provide thermal energy by heat exchanger respectively and keep hot environment in collection process.
Beneficial effect
Biomass gas tar oil consistently online measuring system provided by the utility model and measurement method, biological fuel gas exist
It into before measuring instrumentss, is introduced into closed combustion chamber and burns, heat scission reaction occurs for the tar in combustion gas, is changed into dioxy
Change the micro-molecular gas such as carbon and vapor, and will not be adhered on the measurement original part of instrument under these micro-molecular gas room temperature, more
It will not result in blockage, therefore, measuring instrumentss such as mass flowmenter, volume flowmeter and elaterometer can be placed in measurement gas for a long time
Lu Zhong, and measurement accuracy is reliable and stable.
Biomass gas tar oil consistently online measuring system and measurement method provided by the utility model, using quality subtractive
Method is measured with two methods of density minusing, and obtains the final content data of tar using the unequal precision measurement method of weighting,
Improve the precision and reliability of consistently online measurement.
Biomass gas tar oil consistently online measuring system and measurement method provided by the utility model, measurement process due to
The thermal energy generated that burns can be used to generate electricity and heat preservation and heat supply, and self-powered may be implemented, from heat supply in entire measuring system, without additional
Energy consumption.
Detailed description of the invention
Fig. 1 is the equipment connection schematic diagram of the utility model.
Specific embodiment
To keep the purpose and technical solution of the utility model embodiment clearer, implement below in conjunction with the utility model
The attached drawing of example, is clearly and completely described the technical solution of the utility model embodiment.Obviously, described embodiment
It is a part of the embodiment of the utility model, instead of all the embodiments.Based on described the embodiments of the present invention,
Those of ordinary skill in the art's every other embodiment obtained under the premise of being not necessarily to creative work belongs to practical
Novel protected range.
Biomass gas tar oil consistently online measuring system as shown in Figure 1:, fuel gas inlet end and gas-solid separator into
Gas end is connected；The outlet side of gas-solid separator is connected with the inlet end of fire arrester；The outlet side of fire arrester by valve group with
The inlet end of combustion chamber is connected；The outlet side of combustion chamber is connected with the inlet end of heat exchanger；The outlet side of heat exchanger passes through
Pump is connected with gas vent, and the valve group is made of valve I and valve II；The outlet side of the valve I and burning
The inlet end of chamber is connected；The outlet side of valve II is connected with the inlet end of tar condenser；The outlet side of tar condenser is logical
Check valve is crossed to be connected with the inlet end of combustion chamber；The outlet side of pump be equipped with measuring system, measuring system by stirling generator into
Row power supply.
Biological fuel gas gas circuit are as follows: biological fuel gas enters gas-solid separator from fuel gas inlet, after removing solid particulate matter
Biological fuel gas by after fire arrester, dividing two-way to enter closed adiabatic combustion chamber, I route is that combustion gas is directly entered through valve A
Combustion chamber, II route pass through the front and back control valve A and valve B to enter combustion chamber through valve B after tar condensing or adsorbing separation
It alternately opens, combustion gas alternately enters combustion chamber full combustion by I or II route, and the air equipped with constant flow rate is matched in combustion chamber
Wind, the high-temperature gas after burning enter pump after over-heat-exchanger cools down, subsequently enter measuring system and measure, after measurement
Gas is discharged from gas vent.
DATA REASONING processing path: to be equipped with mass flowmenter, volume flowmeter, elaterometer in measuring system,
It is exported into processing and controller, result that treated to display after each data are acquired.
Heat energy utilization path: gas-solid separator, valve I, valve II obtain heat by heat exchanger and keep high temperature.Heat is handed over
Parallel operation can connect stirling generator storage heater.
Utilization of power path: gas-solid separator, valve A, valve B obtain heat by heat exchanger and keep high temperature.Heat is handed over
Parallel operation can connect stirling generator storage heater.
The measurement method of biomass gas tar oil consistently online measuring system, steps are as follows:
1), all devices are completed in connection, are opened equipment biological fuel gas from fuel gas inlet and are entered gas-solid separator, removing is solid
Biological fuel gas after body particulate matter passes through fire arrester；
2), divide two-way by two groups of valves from fire arrester and in time alternately input biological fuel gas into closed insulation
Combustion chamber full combustion；
3) high-temperature gas, generated after full combustion in combustion chamber enters pump after over-heat-exchanger cools down, with laggard
Enter measuring system to measure, the gas after measurement is discharged from gas vent；
4), the data that measuring system will test are handled with controller by processing and feed back to display.
Its data processing in the measurement method of biomass gas tar oil consistently online measuring system described in the utility model
Calculation method are as follows:
(1) quality minusing is used, the mass flow data by the biological fuel gas of valve I are calculated and passes through valve II
Biological fuel gas mass flow data between difference；By the difference divided by the biomass obtained by volume flowmeter measurement
Combustion gas volume flow data, obtain tar content C in combustion gasa；
(2) density minusing is used, the elaterometer measurement data by valve I and the gas by valve II are calculated
Difference between densimeter measurement data obtains tar content C in combustion gasb。
(3) using the unequal precision measurement method of weighting by obtaining tar content value:
ma- subtraction data weight of poor quality is determined according to mass flowmenter precision；
mb- density contrast subtraction data weight is determined according to elaterometer.
Example: Hunan gasification projects biomass gas tar oil content measurement example.
Offline poor heavy method condenses the coke obtained in combustion gas by long-time using Pitot tube biomass collection combustion gas sample
Oil needs weighed off line, repeatedly time-consuming about 1 hour of measurement, to obtain tar content measurement primary data as 15-20mg/
Nm3, since this method needs manpower constantly to carry out weighed off line, therefore, it is impossible to realize lasting on-line measurement, and measurement every time
Time is longer.
Fast Measurement Method on-line measurement primary data is 15-19mg/Nm3, more accurately, place in gas circuit, consistently online
It uses, after 1 year, rapid survey instrument causes measuring instrumentss that can not continue to use due to tar Severe blockage.
Originally measurement data is 15-18mg/Nm to the utility model3, place in gas circuit, consistently online uses, and respectively surveys after 1 year
Amount instrument remains to normal use, measurement data 17-21mg/Nm3, and the gas circuit before combustion chamber is not sent out due to insulation effect
Green coke oil condenses, due to not containing tar in gas circuit after combustion chamber, measuring instrumentss will not block, entire measuring system
Reliable and stable, data are accurate.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in
Change or replacement, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should
It is subject to the protection scope in claims.
Claims (5)
1. a kind of biomass gas tar oil consistently online measuring system, the inlet end phase at fuel gas inlet end and gas-solid separator
Even；The outlet side of gas-solid separator is connected with the inlet end of fire arrester；The outlet side of fire arrester passes through valve group and combustion chamber
Inlet end be connected；The outlet side of combustion chamber is connected with the inlet end of heat exchanger；The outlet side of heat exchanger passes through pump and gas
Body outlet is connected, it is characterised in that: the valve group is made of valve I and valve II；The outlet side of the valve I with
The inlet end of combustion chamber is connected；The outlet side of valve II is connected with the inlet end of tar condenser；The outlet of tar condenser
End is connected by check valve with the inlet end of combustion chamber；The outlet side of pump is equipped with measuring system, and measuring system is generated electricity by Stirling
Machine is powered.
2. biomass gas tar oil consistently online measuring system according to claim 1, it is characterised in that: the heat exchange
Device conducts thermal energy respectively to gas-solid separator, valve I, valve II and stirling generator.
3. biomass gas tar oil consistently online measuring system according to claim 1, it is characterised in that: further include acquisition
System, processing and controller, display；The acquisition system and measuring system carries out signal transmission；The signal of acquisition system
Output end is connected with processing with the signal receiving end of controller；Processing and controller, which show the data of processing by display, to be tied
Fruit.
4. biomass gas tar oil consistently online measuring system according to claim 2 or 3, it is characterised in that: described
Stirling generator is respectively acquisition system, processing and controller, display offer electric energy.
5. biomass gas tar oil consistently online measuring system according to claim 1, it is characterised in that: the measurement
Mass flowmenter, volume flowmeter and elaterometer are equipped in system.
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| CN201821999200.2U CN209460084U (en) | 2018-11-30 | 2018-11-30 | A kind of biomass gas tar oil consistently online measuring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109540724A (en) * | 2018-11-30 | 2019-03-29 | 南京林业大学 | A kind of biomass gas tar oil consistently online measuring system and measurement method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109540724A (en) * | 2018-11-30 | 2019-03-29 | 南京林业大学 | A kind of biomass gas tar oil consistently online measuring system and measurement method |
| CN109540724B (en) * | 2018-11-30 | 2024-02-27 | 南京林业大学 | Continuous online measurement system and measurement method for biomass gas tar |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Nanjing nengwa New Material Technology Co., Ltd Assignor: NANJING FORESTRY University Contract record no.: X2020320000134 Denomination of utility model: A continuous on-line measurement system for biomass gas tar Granted publication date: 20191001 License type: Common License Record date: 20201106 |