CN212410349U - Device for testing pollution discharge of civil heating stove in laboratory - Google Patents
Device for testing pollution discharge of civil heating stove in laboratory Download PDFInfo
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- CN212410349U CN212410349U CN201922374723.9U CN201922374723U CN212410349U CN 212410349 U CN212410349 U CN 212410349U CN 201922374723 U CN201922374723 U CN 201922374723U CN 212410349 U CN212410349 U CN 212410349U
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Abstract
The utility model relates to a device for testing pollution emission of civil heating stoves in a laboratory, which belongs to the field of atmospheric monitoring; the top end of the test furnace is provided with a circulating water outlet, and the left side and the right side of the bottom end of the test furnace are respectively provided with a straight drainage outlet and a circulating water inlet; the anti-explosion boiling interface is connected with the lower layer pipeline, and the heat exchanger, the circulating water heat energy monitoring meter, the circulating water inlet, the direct-discharge water outlet and the direct-discharge water heat energy monitoring meter are sequentially connected; the smoke discharge pipeline is connected with the smoke gas collecting hood, the horizontal dilution pipeline is vertically connected with the vertical dilution mixing cavity, and the side wall of the vertical dilution mixing cavity is provided with a smoke testing part; the tail end of the dilution and test part is connected with a tail gas treatment part; the tail gas treatment and discharge are completed by a tail end fan of the dilution system, a tail gas treatment filter box and a tail gas treatment tail end fan which are sequentially connected end to end; the utility model discloses can accurately realize the test of civilian heating stove more really, furthest's protection instrument simultaneously prolongs instrument life.
Description
Technical Field
The utility model relates to a device of civilian heating stove pollutant discharge of laboratory test belongs to the atmosphere monitoring field.
Background
At present, nearly 60% of families in rural areas in China still use biomass and fire coal as main fuels of daily life, and data obtained according to the analysis result of the source of the atmospheric pollutants shows that rural heating pollution has very significant contribution to the formation and dispersion of regional dust haze, so that the pollution emission of biomass and fire coal combustion in rural areas in China is widely concerned. The prior art today mainly has the following problems:
1) the solid fuel has the characteristics of violent reaction change and strong instantaneity in the combustion process, the emission factor measurement needs to measure a period of stable time for fuel combustion, and the continuous measurement of the existing monitoring instrument exceeding the detection limit range easily causes instrument poisoning and sampling membrane overload.
2) When the gas-collecting hood is used for testing the pollution emission of a stove, if the gas-collecting hood is not externally connected with a chimney, the pollutants are leaked or fly through other parts of the stove body, the incomplete collection condition is caused, the combustion effect of the stove body can be influenced without the chimney, and the significance of simulating the practical use condition of a user is lost.
3) When the solid fuel is combusted, the flow velocity and temperature distribution of the flue gas in the flue gas exhaust pipeline are quite uneven, the indexes have large difference in different combustion states, if the solid fuel is directly sampled in a chimney, particles are difficult to cool to be in a particle state, the particle state is inconvenient to collect and measure, the difference between the physical and chemical properties of the solid fuel and the real state discharged into the atmosphere is large, and the test result is seriously underestimated.
4) The combustion states of the stoves are different, the difference of pollution emission is large, the existing testing device cannot control the combustion state of the stoves to be the combustion state of a user during actual heating, and the obtained pollution emission has no real significance.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the stove of the unable external chimney of test of low frame gas collecting channel to cause to sound the stove and normally burn, the test result is inconsistent with actual conditions, flue gas dwell time is short, the test flue gas is difficult to condense, thereby lead to collecting incomplete problem of pollutant and direct sampling and cause the impaired problem in instrument life-span, provide a device of civilian heating stove pollution discharge of laboratory test. The utility model discloses can accurately realize the test of civilian heating stove more really, furthest's protection instrument simultaneously prolongs instrument life.
The purpose of the utility model is realized by the following technical scheme.
A device for testing pollution emission of a civil heating furnace in a laboratory comprises: the system comprises an external water pipeline part, a dilution and test part and a tail gas treatment part;
the external water pipeline part comprises: the system comprises a test furnace, a circulating water outlet, an anti-explosion boiling interface, a heat exchanger, a circulating water heat energy monitoring meter, a circulating water outlet, a circulating water inlet, a direct-discharge water outlet and a direct-discharge water heat energy monitoring meter; the top end of the test furnace device is provided with a circulating water outlet for discharging circulating water when a circulating pipeline is adopted; the left side and the right side of the bottom end of the test furnace device are respectively provided with a direct drainage outlet and a circulating water inlet; the direct drainage outlet is externally connected with a direct drainage heat energy monitoring meter; the circulating water outlet is connected with one side of the heat exchanger, the other side of the heat exchanger is connected with the anti-explosion interface and the circulating water heat energy monitoring meter in sequence, and the circulating water heat energy monitoring meter is finally connected to the circulating water inlet;
the dilution and testing section comprises: the device comprises a flue gas collecting hood, a turbulence baffle, a horizontal dilution pipeline, a vertical dilution mixing cavity, a smoke exhaust pipeline, a cyclone separator, a gaseous pollutant online tester and a particulate matter online tester; the flue gas collecting hood is connected with a smoke exhaust pipeline and a horizontal dilution pipeline, two turbulence baffles are staggered at 1/3 of the horizontal dilution pipeline, the length of each baffle is 1/3 of the diameter of the pipeline, a vertical dilution mixing cavity is vertically connected with the horizontal dilution pipeline, a dilution and test part is arranged on the side wall of the vertical dilution mixing cavity, the dilution and test part is connected with a flue gas sampling pipe, the flue gas sampling pipe extends into the horizontal dilution pipeline and is parallel to the direction of airflow, and the depth of the flue gas sampling pipe is 1/3 of the horizontal dilution pipeline; in the vertical dilution mixing cavity, a cyclone separator, a gaseous pollutant online tester and a particulate matter online tester are connected with a sampling pipe;
the tail gas treatment part comprises; a tail gas treatment filter box, a tail gas treatment tail end fan and a dilution system tail end fan; the tail gas treatment part is connected with the tail gas end of the dilution and test part. The tail end fan of the dilution system, the tail gas treatment filter box and the tail gas treatment tail end fan are sequentially connected end to end.
In order to more accurately obtain the total amount of emissions in the whole process of fuel combustion, the detection is performed from the start of the ignition phase of the fuel.
The online gas pollutant tester is additionally provided with a display, so that a real-time emission curve of the pollutant concentration can be obtained, and the information of average concentration, stage concentration and instantaneous concentration can be arranged according to different analysis requirements.
The whole materials of the dilution and test part and the gas collecting hood are galvanized stainless steel pipes.
The pipeline connected with the fan at the tail end of the dilution system and the pipelines at the dilution and test parts are connected by corrugated pipes, and the connecting parts are sealed by using clamps and flange plates so as to ensure the air tightness of the dilution system and be convenient to disassemble and adjust at any time according to different test conditions.
The sampling site of the test instrument can be changed by disassembling the pipeline.
The distance between the installation position of the smoke gas collecting hood and the smoke gas discharge outlet of the stove is not less than 15cm, so that the suction force of the diluting and testing part does not generate assistance to the combustion of the stove.
The turbulence baffles in the horizontal dilution pipeline are 1/3 pipeline diameters in length and are staggered, so that the mixed gas can be turbulent as soon as possible, and the mixed gas is uniformly mixed and condensed into final-state particles.
The diluting and testing part is connected with a smoke sampling pipe, the smoke sampling pipe extends into the horizontal diluting pipeline and is parallel to the airflow direction, and the depth of the smoke sampling pipe is 1/3 diameters of the diluting pipe section. In the vertical dilution mixing cavity, particulate matters in the flue gas, the cyclone separator, the gaseous pollutant online tester and the particulate matter online tester are connected with the sampling pipe. The material of sampling pipe all adopts the external sampling pipe of Teflon pipe conduct gaseous pollutant tester probe department, adopts galvanized stainless steel pipe or black carbon pipe conduct external sampling pipe in order to reduce the loss of pollutant on the pipe wall of connecting particulate matter on-line tester probe department.
The circulating water part can calculate the actual heat supply quantity through the coal consumption and the heat value in the heating time, and the heating heat efficiency is obtained through calculation. In the experiment, the heat energy flow meter is used for assisting in correcting the heat energy accounting difference, so that the accurate calculation of the heat efficiency is ensured.
The working process is as follows:
when a circulating water pipeline is adopted: injecting water into the test furnace through an anti-explosion boiling interface connected with the lower layer pipeline until all parts in the furnace body and the circulating water pipeline are fully filled with cold water; when an experiment is started, the water body in the furnace is heated, expands and has increased pressure, namely, the water body starts to flow in the circulating pipeline; because the anti-bumping interface is communicated with the atmosphere, the pressure intensity at the position is smaller, in the experiment, the water body subjected to thermal expansion in the furnace body firstly flows out through the circulating water outlet, flows through the heat exchanger and the circulating water heat energy monitoring meter along a pipeline, flows back to the furnace body through the circulating water inlet, and is kept to circulate all the time in the process of heating the water body;
when adopting the straight water pipeline: the pipeline from the circulating water outlet to the circulating water inlet is closed through the adjustment of a valve and the pipeline, and the direct-discharge water outlet is opened, so that the circulating water pipeline externally connected with the furnace body is converted into a direct-discharge water pipeline; before the experiment begins, cold water is filled from the anti-explosion boiling interface until the whole furnace body is filled, and constant-temperature water is required to be ensured to supplement cold water for the system during the experiment; when an experiment is started, cold water flows out of a direct-discharge water outlet and passes through a direct-discharge water heat energy monitoring meter, a temperature valve is arranged in the direct-discharge water heat energy monitoring meter, after water flow is heated to a set temperature by a stove, the temperature valve is opened, a water body is discharged through the direct-discharge water heat energy monitoring meter and is not circulated any more, the direct-discharge water heat energy monitoring meter measures the temperature difference and the total flow of inlet and outlet water during the experiment, the combustion thermal efficiency of the stove is further obtained, and the pollution discharge condition of the stove under different thermal efficiencies is tested;
when the smoke enters the dilution and test part, the smoke passes through the smoke exhaust pipeline and enters the horizontal dilution pipeline under the suction of the smoke gas collecting hood, two turbulence baffles are staggered at 1/3 of the horizontal dilution pipeline, and the length of each baffle is 1/3 of the diameter of the pipeline; the flue gas passes through the perpendicular flue gas test section who dilutes the mixing chamber entering setting at its lateral wall that dilutes the pipeline with the level and perpendicularly connects afterwards and tests, carries out the particulate matter when passing through cyclone and collects: PM to be cut2.5And collecting the quartz filter membrane, weighing and analyzing to obtain a collection mass, and obtaining the particulate matter emission factor and the emission concentration in the testing stage according to the fuel consumption or the collection air volume. Detection of SO by gaseous pollutants on-line tester2、NOx、CO、CO2The concentration of the contaminant. The particle on-line tester obtains real-time concentration and real-time curve through the change of light refraction parameters, and provides judgment basis for the combustion state and the particle emission stage intuitively.
When entering the tail gas treatment part, the tail gas treatment and discharge are completed through a dilution system tail end fan, a tail gas treatment filter box and a tail gas treatment tail end fan which are sequentially connected end to end.
Advantageous effects
1. The utility model discloses a device of civilian heating stove pollutant discharge of laboratory test, gas collecting channel provide the draft under the condition that does not influence the stove burning, with all gaseous pollutants all collect to the dilution pipe in, eliminate experimental error, provide safe and healthy operating condition for the experimenter.
2. The utility model discloses a device of civilian heating stove pollutant discharge of laboratory test, the design of overhead gas collecting channel is applicable to the stove test of taking the chimney on the one hand, has reduced stove in use's normal condition, and on the other hand has lengthened exhaust pipe's length, provides sufficient dwell time for gaseous pollutants, lets the gas mixture more even, and the condensation is more complete.
3. The utility model discloses a device of civilian heating stove pollutant discharge of laboratory test, the torrent baffle in the level dilution pipeline makes the gaseous intensive mixing of collection and strengthens torrent degree.
4. The utility model discloses a device for testing pollution discharge of civil heating stoves in laboratory, the pipeline material of the whole testing system is galvanized stainless steel pipe. The Teflon tube is used as an external connection tube at the probe of the gaseous pollutant tester, the black carbon tube is used as an external sampling tube connected with the probe of the particulate matter online tester, and the pipelines made of the materials can effectively reduce the loss of pollutants on the tube wall.
5. The utility model discloses a device of civilian heating stove pollutant discharge of laboratory test links to each other with the bellows between gas collecting channel, fan and the dilution pipeline, and each connection position uses clamp and flange to seal to guarantee its gas tightness, and be convenient for dismantle at any time and adjust according to the test situation of difference, according to the position of the pipeline gas velocity of flow adjustment sampling point of difference.
6. The utility model discloses a device of civilian heating stove pollutant discharge of laboratory test, gaseous pollutant test instrument can show the real-time emission curve of pollutant discharge concentration, according to the experiment record, reachs the concentration under different stages and the combustion state, and the range scope of instrument selection is great, tests under the condition of not having the dilution in the stage of stove steady combustion, and the accuracy of dilution ratio is verified to the concentration contrast of test result and dilution test.
7. The utility model discloses a device of civilian heating stove pollutant discharge of laboratory test adopts the external cyclone of constant flow vacuum pump, and pump body flow is stable, does not receive the influence of bent pipe loss pressure drop. The cyclone separator collects particles by cutting, the selection type of the cyclone separator has the characteristics of high treatment efficiency and accurate collection amount, and the system is selected to be an XLT type long and narrow cyclone separator. The volume flow is the external flow of the pump, and the inlet area parameter of the XLT cyclone separator is calculated according to the type selection principle of the cyclone separator on the premise that the flow is known.
8. The utility model discloses a device of civilian heating stove pollutant discharge of laboratory test, the heating performance of circulating water system simulation test stove can reach the pollutant discharge condition under the corresponding combustion state.
9. The utility model discloses a device of civilian heating stove pollutant discharge of laboratory test, circulating water system insert elbow and valve, realize by the switching of circulating water to straight drainage. And calculating the total heat transfer amount according to the water temperature difference of the inlet and the outlet and the specific heat capacity of water, calculating the actual heat supply amount according to the coal consumption and the heat value thereof in the heating time, and dividing the actual heat supply amount by the coal consumption and the heat value to obtain the heating heat efficiency.
The system effectively avoids the problem of pollutant collection and leakage, provides real combustion conditions for the test stove, so that the form of pollutant emission tends to actual conditions, directly samples in a chimney at the stable combustion stage of the stove by the model selection of the gaseous pollutant online tester, and can laterally verify the dilution ratio of the gas collecting hood system by the ratio of the sampling concentrations at two positions. The cyclone separator and the light sensation particulate matter testing instrument are used for simultaneously detecting the particulate matters, so that errors caused by particulate matter testing are effectively eliminated, and a real-time emission trend graph of the particulate matters can be obtained.
Drawings
FIG. 1 is a schematic diagram of the overall design of a system for testing the pollution emission of a civil heating furnace in a laboratory;
wherein:
1. an external water pipeline part: 1.1-anti-explosion interface, 1.2-heat exchanger, 1.3-circulating water heat energy monitoring meter, 1.4-direct discharging water heat energy monitoring meter, 1.5-circulating water outlet, 1.6-circulating water inlet and 1.7-direct discharging water outlet.
2. Dilution and test section: 2.1-flue gas collecting hood, 2.2-turbulence baffle, 2.3-horizontal dilution pipeline, 2.4-vertical dilution mixing cavity, 2.5-smoke discharge pipeline, 2.6-cyclone separator, 2.7-gaseous pollutant on-line tester, and 2.8-particle on-line tester.
3. And a tail gas treatment part: 3.1-dilution system end fan, 3.2-tail gas treatment filter box, and 3.3-tail gas treatment end fan.
FIG. 2 is a schematic view of the overall layout of the sampling section;
wherein, 2.1 the particulate matter collecting part: 2.1.1-particulate matter sampling port, 2.1.2-cyclone separator
2.1.3-Filter Membrane Jacket (90mm), 2.1.4-rotameter, 2.1.5-vacuum Pump
2.2. Gaseous pollutant on-line tester
2.8. Particulate matter on-line measuring instrument
Detailed Description
Hereinafter, embodiments of the present invention will be further described with reference to the accompanying drawings.
Example 1
Taking a stove for testing a heating area of 150 square meters as an example, 10 kilograms of fuel (bituminous coal, anthracite, semi-coke, biomass particles and honeycomb briquette) is selected for a combustion test, aiming at exploring the pollution emission generated by heating with different fuels under the same thermal efficiency.
A device for testing pollution emission of a civil heating furnace in a laboratory comprises: the device comprises an external water pipeline part 1, an anti-explosion boiling interface 1.1, a heat exchanger 1.2, a circulating water heat energy monitoring table 1.3, a direct discharging water heat energy monitoring table 1.4, a circulating water outlet 1.5, a circulating water inlet 1.6, a direct discharging water outlet 1.7, a diluting and testing part 2, a flue gas collecting hood 2.1, a turbulence baffle 2.2, a horizontal diluting pipeline 2.3, a vertical diluting and mixing cavity 2.4, a smoke discharging pipeline 2.5, a cyclone separator 2.6, a gaseous pollutant online tester 2.7, a particulate matter online tester 2.8, a tail gas treatment part 3, a diluting system tail end fan 3.1, a tail gas treatment filter box 3.2 and a tail gas treatment tail end fan 3.3.
Before the experiment is started, water is filled into the furnace body through the anti-explosion joint 1.1 until all parts in the furnace body and the circulating water pipeline are filled with cold water.
When the circulating water pipeline is adopted, the water body in the furnace is heated and expands, and the pressure is increased, namely the water body starts to flow in the circulating pipeline. Because the anti-explosion joint 1.1 is communicated with the atmosphere, the pressure at the position is smaller, in the experiment, the water body which is heated and expanded in the furnace body firstly flows out through the circulating water outlet 1.5, flows through the heat exchanger 1.2 along a pipeline and the circulating water heat energy monitoring meter 1.3, and flows back to the furnace body from the circulating water inlet 1.6, and the circulation of the way is always kept in the process of heating the water body. The stove adopts a circulating water pipeline for testing, aims to simulate the actual heating condition at home of a user, fixes the heat efficiency of the stove by controlling the heating temperature and flow of circulating water, and performs a stove pollution discharge test after the condition.
When the direct drainage pipeline is adopted, the pipeline between the circulating water outlet 1.5 and the circulating water inlet 1.6 is closed through the adjustment of the valve and the pipeline, and the direct drainage outlet 1.7 is opened, so that the circulating water pipeline externally connected with the furnace body is converted into the direct drainage pipeline. Before the experiment begins, cold water is still filled from the anti-explosion boiling interface 1.1 until the whole furnace body is filled, and constant-temperature water is required to be ensured to supplement cold water for the system during the experiment.
When the experiment begins, cold water flows out from the direct-discharge water outlet 1.7, the direct-discharge water heat energy monitoring table 1.5 is used, a temperature valve is arranged in the direct-discharge water heat energy monitoring table 1.4, after water flow is heated to a set temperature by a stove, the temperature valve is opened, a water body is not recycled through a discharge pipeline of the direct-discharge water heat energy monitoring table 1.4, the direct-discharge water heat energy monitoring table 1.5 measures the temperature difference and the total flow of inlet and outlet water during the experiment, the heat efficiency of stove combustion is further obtained, and the pollution discharge condition of the stove under different heat efficiencies is tested.
The flue gas is collected by the flue gas collecting hood 2.1 after being discharged from the chimney, and the distance between the flue gas collecting hood 2.1 and the smoke exhaust pipeline 2.5 is ensured to be more than 15cm so as to ensure that the suction force does not cause interference to the combustion state of the stove. After being sucked by the gas-collecting hood, the flue gas and the air are primarily mixed in the horizontal dilution pipeline 2.3. Two turbulence baffles 2.2 are built into the horizontal dilution tunnel 2.3 to enhance the mixing of the gases and to increase the turbulence. The vertical dilution and mixing chamber 2.4 is a long pipe vertical to the ground, providing sufficient residence time for the gases and condensing the flue gases to a final form. The flue gas passes through the flue gas testing part after being uniformly mixed and condensed in the vertical dilution mixing cavity 2.4. The weight of the collected particles is respectively measured by a cyclone separator 2.6 to determine the particle pollution emission; SO detection by gaseous pollutant on-line tester 2.72、NOx、CO、CO2The stage-wise concentration of the contaminant; the particle online tester 2.8 is used for measuring the real-time concentration and displaying a real-time curve, so that visual judgment basis is provided for the combustion state and the particle emission stage.
The draft of the dilution and test part is provided by a tail end fan 3.1 of the dilution system, then is treated by a tail gas treatment filter box 3.2 to reach the standard pollution concentration, and is discharged outdoors by a tail gas treatment tail end fan 3.3, so that the interference of secondary smoke suction into a gas collecting hood on an experimental result is eliminated.
With the system, the test is started from the ignition stage of the fuel, and the actual pollution in the complete combustion process is obtained. The specific composition of the test apparatus is shown in FIG. 2, wherein a 2.1.2 XLT type cyclone cuts particles with a diameter of less than 2.5 μm, and PM is introduced2.5Collected on a 90mm quartz filter (filter built into 2.1.3 filter jacket), pumped by a 2.1.5 vacuum pump and flow controlled by a 2.1.4 rotameter. After the end of the test, the test was completed,the total particulate matter emission amount is determined through a weighing method, the whole average emission concentration is calculated after the volume flow of smoke in a known pipeline, if the fuel consumption amount in the test period is accurately recorded, the particulate matter emission factor under unit mass fuel consumption can be obtained through the collection mass of the particulate matter, and the particulate matter emission factor under unit energy consumption can be obtained after the fuel heat value is tested. 2.2. Gaseous pollutant on-line tester capable of detecting SO2、NOx、CO、CO2The concentration of the contaminant. 2.8. The particulate matter on-line tester can obtain real-time concentration through the change of the light refraction parameter, can display a real-time curve, and provides visual judgment basis for the combustion state and the particulate matter emission stage, wherein PM2.5The built-in filter membrane of 37mm of on-line analysis appearance, collect the particulate matter through small-size cutterbar to correct the data that the light test method surveyed, avoid the error. By comparing the test data of the 2.8 particle online tester and the 2.1.2 XLT type cyclone separator, the accurate concentration and the discharge factor of the whole particle discharge can be corrected.
According to the testing method, after the device is used for testing the pollution emission of the furnace, the emission factor of the gaseous pollutants and the emission factor of the particulate matters generated by consuming unit mass of fuel are obtained, and the emission factor of the gaseous pollutants and the emission factor of the particulate matters generated under unit energy are obtained through conversion of the heat value of the fuel. Obtaining the average pollution concentration of the gaseous pollutants through a flue gas testing system; the particle matter cut by the cyclone separator obtains the particle matter emission factor and average concentration of fuel matched combustion of different furnaces. The external circulating water pipeline of the stove can simulate the actual use condition of a user to obtain the corresponding pollution emission of each stove and fuel, and when the direct drainage pipeline is used, the corresponding pollution emission test can be carried out on the direct drainage pipeline after the thermal efficiency is determined.
When the device is used for testing the pollution emission of the stove with the chimney, the gas collecting hood can absorb all generated pollution gas and particles and can not neglect the test loss caused by the stove leakage; the long flue gas mixing cavity provides enough residence time for the mixed gas, so that the flue gas is fully mixed and condensed, and the sampling loss is completely avoided; the dilution system can prevent the instrument from contacting with high-pollution smoke, the service life of the precision instrument is protected, and the whole-process monitoring is carried out to obtain the whole-process real-time data; the test of particulate matter is carried out by cyclone and particulate matter on-line measuring appearance jointly, and the result of the two has the comparative meaning, can verify the accuracy of this system.
The above detailed description further illustrates the objects, technical solutions and advantages of the present invention, and it should be understood that the above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. The utility model provides a device that civilian heating stove pollutant discharge of laboratory test which characterized in that: the method comprises the following steps: an external water pipeline part (1), a dilution and test part (2) and an exhaust gas treatment part (3);
the external water pipe section (1) includes: the system comprises an anti-explosion boiling interface (1.1), a heat exchanger (1.2), a circulating water heat energy monitoring meter (1.3), a circulating water outlet (1.5), a circulating water inlet (1.6), a direct-discharge water outlet (1.7) and a direct-discharge water heat energy monitoring meter (1.4); the top end of the test furnace device is provided with a circulating water outlet (1.5) for discharging circulating water when a circulating pipeline is adopted; the left side and the right side of the bottom end of the test furnace device are respectively provided with a direct drainage outlet (1.7) and a circulating water inlet (1.6); a direct drainage heat energy monitoring meter (1.4) is connected outside the direct drainage outlet (1.7); the circulating water outlet (1.5) is connected with one side of the heat exchanger (1.2), the other side of the heat exchanger (1.2) is sequentially connected with the anti-explosion boiling interface (1.1) and the circulating water heat energy monitoring meter (1.3), and the circulating water heat energy monitoring meter (1.3) is finally connected to the circulating water inlet (1.6);
the dilution and test section (2) comprises: the device comprises a flue gas collecting hood (2.1), a turbulence baffle (2.2), a horizontal dilution pipeline (2.3), a vertical dilution mixing cavity (2.4), a smoke exhaust pipeline (2.5), a cyclone separator (2.6), a gaseous pollutant online tester (2.7) and a particulate matter online tester (2.8); the flue gas collecting hood (2.1) is connected with a smoke exhaust pipeline (2.5) and a horizontal dilution pipeline (2.3), two turbulence baffles (2.2) are placed at 1/3 of the horizontal dilution pipeline (2.3) in a staggered mode, the length of each baffle is 1/3 of the diameter of the pipeline, a vertical dilution mixing cavity (2.4) is vertically connected with the horizontal dilution pipeline (2.3), a dilution and test part (2) is arranged on the side wall of the vertical dilution mixing cavity (2.4), the dilution and test part (2) is connected with a flue gas sampling pipe, the flue gas sampling pipe extends into the horizontal dilution pipeline (2.3), is parallel to the airflow direction, and has the depth of 1/3 diameter of the horizontal dilution pipeline (2.3); in the vertical dilution mixing cavity (2.4), a cyclone separator (2.6), a gaseous pollutant online tester (2.7) and a particulate matter online tester (2.8) are connected with the vertical dilution mixing cavity (2.4);
the tail gas treatment section (3) comprises; a dilution system tail end fan (3.1), a tail gas treatment filter box (3.2) and a tail gas treatment tail end fan (3.3); the tail end of the dilution and test part (2) is connected with a tail gas treatment part (3); the tail end fan (3.1) of the dilution system, the tail gas treatment filter box (3.2) and the tail end fan (3.3) of the tail gas treatment are sequentially connected end to end.
2. The device for testing the pollution emission of the civil heating stove in the laboratory, as claimed in claim 1, wherein: in order to more accurately obtain the total amount of emissions in the whole process of fuel combustion, the detection is performed from the start of the ignition phase of the fuel.
3. The device for testing the pollution emission of the civil heating stove in the laboratory, as claimed in claim 1, wherein: the online gaseous pollutant tester (2.7) is additionally provided with a display, so that a real-time emission curve of the pollutant concentration can be obtained, and information of average concentration, stage concentration and instantaneous concentration can be arranged according to different analysis requirements.
4. The device for testing the pollution emission of the civil heating stove in the laboratory, as claimed in claim 1, wherein: the design of the dilution and test part (2) is suitable for the stove test with a chimney, and the length of the smoke exhaust pipeline (2.5) is lengthened; wherein the integral materials of the pipeline and the gas collecting hood of the dilution and test part (2) are galvanized stainless steel pipes.
5. The device for testing the pollution emission of the civil heating stove in the laboratory, as claimed in claim 1, wherein: the pipeline connected with the fan (3.1) at the tail end of the dilution system and the pipelines at all positions of the dilution and test part (2) are connected through corrugated pipes, and the connecting parts are sealed through clamps and flange plates so as to ensure the air tightness of the pipeline and be convenient to detach and adjust at any time according to different test conditions.
6. The device for testing the pollution emission of the civil heating stove in the laboratory, as claimed in claim 1, wherein: the distance between the installation position of the smoke gas collecting hood (2.1) and the smoke gas discharge outlet of the stove is not less than 15cm, so that the suction force of the dilution and test part does not generate assistance to the combustion of the stove.
7. The device for testing the pollution emission of the civil heating stove in the laboratory, as claimed in claim 1, wherein: the length of the turbulence baffle (2.2) in the horizontal dilution pipeline (2.3) is 1/3 pipeline diameter, and the turbulence baffle is staggered, so that the mixed gas can be turbulent as soon as possible.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113281230A (en) * | 2021-05-19 | 2021-08-20 | 北京化工大学 | Heating stove pollutant emission and thermal efficiency evaluation test system and method for detecting pollutant emission factor and thermal efficiency |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113281230A (en) * | 2021-05-19 | 2021-08-20 | 北京化工大学 | Heating stove pollutant emission and thermal efficiency evaluation test system and method for detecting pollutant emission factor and thermal efficiency |
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