CN209878691U - Combustion device for simulating open-air combustion of biomass to discharge atmospheric pollutants - Google Patents
Combustion device for simulating open-air combustion of biomass to discharge atmospheric pollutants Download PDFInfo
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Abstract
The utility model relates to a simulation living beings open-air burning discharges atmospheric pollutants's burner, including burning furnace casing, bell and gas transmission pipe, transversely be provided with the burning net in burning the furnace casing, be provided with tonifying qi transmission pipe in the lower part of burning net, tonifying qi transmission pipe passes and fires burning furnace casing and extend to the casing outside and be connected with the air make-up pump, is provided with the test tube on the upper portion of burning net, and the test tube passes and fires burning furnace casing and extend to the casing outside and be connected with flue gas analyzer. The utility model discloses a burner can make living beings carry out naked light burning, avoids living beings smoldering to burn and the burning is insufficient, accurate simulation dewActual conditions of natural combustion, by burning quantitative dried biomass, a flue gas analyzer monitors CO and CO in the combustion process2The combustion efficiency is calculated in real time according to the concentration, the long-time open fire combustion is guaranteed through air supplement control in the combustion process, and the process of discharging atmospheric pollutants in open-air combustion of biomass is simulated more accurately and truly.
Description
Technical Field
The utility model relates to a simulation living beings open-air burning discharges atmospheric pollutants's burner belongs to environmental test equipment technical field.
Background
China, as a big agricultural country around the world, has about 80% of people mainly agriculture, and biomass fuel occupies an important position in rural energy composition. According to statistics, the total energy consumption of the rural areas in China in 1992 is about 5.70 hundred million tons of standard coal, wherein the crop straws and the firewood are equivalent to 1.36 hundred million tons of standard coal and 1.10 hundred million tons of standard coal respectively. In 1995, the yield of crop straws reaches 6.04 million tons, wherein the yield of corn straws is 2.24 million tons, the yield of wheat straws is 1.40 million tons, the yield of rice straws is 1.7 million tons, and about 25 percent of the crop straws are directly combusted in the open air. The aerosol generated by the combustion of the biomass straws can participate in atmospheric transmission and chemical processes after being released, and the special optical properties and chemical composition of the aerosol influence the surface irradiation balance and atmospheric oxidation and generate a series of pollution events.
The atmospheric pollutants discharged by the open-air combustion of biomass, particularly the open-air combustion of crop straws, can have important effects on the environmental climate and the physical and psychological health of residents in China. In China, the influence mode and the influence degree of the atmospheric pollutants discharged by open-air combustion on the regional environment and climate are continuously developed and changed. In order to further understand and research the regional environmental impact, climate change effect and physical and psychological health problems of residents caused by the open-air combustion of crop straws, the method for simulating the open-air combustion of crop straws by a laboratory is required to research the emission list and emission characteristics of the emitted atmospheric pollutants.
At the present stage, a combustion furnace adopted by a laboratory for simulating open-air combustion of crop straws lacks a uniform experimental device and does not have uniform manufacturing and use standards, most of the existing combustion furnaces for simulating the open-air combustion of the crop straws have the defects of simple and crude facilities, large volume, large occupied area, poor sealing performance, low combustion efficiency, high crop straw consumption and the like, and long-time smoldering process can occur in the combustion process of the crop straws due to the fact that the combustion furnace cannot simulate the open-air environment, a large number of incomplete combustion products are generated, and therefore the actual condition of the open-air combustion of the crop straws cannot be well simulated, and authenticity and accuracy are lost in simulation.
In order to simulate the actual situation of open-air combustion of crop straws more truly and accurately, and better disclose the regional environmental effect and the climate effect caused by the emission of atmospheric pollutants from the open-air combustion source of the crop straws, and achieve the purpose of reducing and controlling the atmospheric pollution, a combustion device which simulates the emission of the atmospheric pollutants from the open-air combustion of the crop straws and better meets the actual open-air conditions is urgently needed.
SUMMERY OF THE UTILITY MODEL
To the current not enough of the aforesaid, the utility model provides a simulation living beings open-air burning discharges atmospheric pollutants's burner and burning test method.
The utility model discloses a realize through following technical scheme:
the utility model provides a simulation open-air burning of living beings discharges atmospheric pollutants's burner, including the sealed burning furnace casing of burning of one end opening other end, be provided with the bell at burning furnace casing opening end department, bell and burning furnace casing sealing connection, the top of bell is provided with the gas transmission pipe, gas transmission pipe and the inside intercommunication of burning furnace casing, transversely be provided with the burning net in burning furnace casing, be provided with the tonifying qi transmission pipe in the lower part of burning net, the tonifying qi transmission pipe passes and fires burning furnace casing and extend to the casing outside and be connected with the air make-up pump, be provided with flow controller and particulate filter on the pipeline of tonifying qi transmission pipe, upper portion at the burning net is provided with the test tube, the test tube passes and fires burning furnace casing and extend to the casing outside and be.
According to the utility model discloses it is preferred, be provided with the sealing washer between firing burning furnace shell open end and bell, fire burning furnace shell open end and bell and fix through the sealing clamp and be connected.
According to the utility model discloses preferred, the burning furnace shell is cylindrical casing, and the bell is inverted funnel shape, and inverted funnel shape's top flare opening is connected with the gas transmission pipe, bell open end internal diameter with fire burning furnace shell open end internal diameter phase-match, be provided with transparent observation window on the casing on burning net upper portion.
According to the utility model discloses preferred, the burning furnace casing height is 800-.
According to the utility model discloses preferred, the inside wall coating of gas transmission pipe has Teflon anti-sticking coating, and the internal diameter of gas transmission pipe is 20-40 mm.
According to the utility model discloses preferred, the burning net is circular asbestos burning net, and the periphery of burning net is provided with rigid mount, and the other end of rigid mount is fixed on the inside wall of burning furnace shell.
According to the utility model discloses preferred, set up electric ignition device in the bottom of burning net, electric ignition device is connected with the switch electricity of striking sparks outside the burning furnace casing lateral wall, and electric ignition device hugs closely burning net bottom.
According to the utility model discloses preferred, flue gas analyzer be Detuo testo350pro flue gas analyzer, particulate filter is high-efficient air particulate (HEPA) filter.
According to the utility model discloses preferred, the inside wall coating of tonifying qi transmission pipe has Teflon anti-sticking coating, and the internal diameter of tonifying qi transmission pipe is 10-30 mm.
According to the utility model discloses preferred, be provided with the collection tray in the bottom in firing the furnace shell.
According to the utility model discloses preferred, the tonifying qi transmission pipe tip that is located combustion furnace shell is provided with the nozzle, and the nozzle is relative with the center of burning net, and the distance between nozzle and the burning net is 10-15 cm.
The distance between the nozzle and the combustion net is matched with the air supply flow velocity, so that the biomass can be combusted on open fire, the biomass smoldering combustion is avoided, the insufficient combustion is avoided, the actual condition of open-air combustion is truly and accurately simulated, and quantitative dried biomass is combusted, so that DemapTEST 350pro flue gas analyzer monitors CO and CO in combustion process2The combustion efficiency is calculated in real time according to the concentration, and the process of discharging atmospheric pollutants by simulating the open-air combustion of biomass for a long time through open fire combustion is ensured by controlling air supplement in the combustion process. The method plays a key role in revealing the regional environmental effect and the climate effect caused by the emission of atmospheric pollutants from the open-air combustion source of the biomass.
The combustion test method for simulating the atmospheric pollutants discharged by the open-air combustion of biomass by using the device comprises the following steps:
1) a preparation stage: starting an air supplement pump to blow the combustion device for 4-6 min; firstly, the flue gas analyzer is zeroed and then connected with a combustion device;
2) weighing 5-15g of clean biomass, drying, spreading on a combustion net, sealing a furnace cover and a shell, and externally connecting a gas transmission pipe with an atmospheric aerosol smoke box; opening the air supplement pump, controlling the air supplement flow rate through the flow controller, inputting particle-free air into the shell of the burning furnace through the air supplement transmission pipe, opening the flue gas analyzer for testing, observing the spectrogram and recording CO and CO2The initial concentration of (a);
3) igniting the biomass by using an electric ignition device, observing the combustion condition of the biomass through a transparent observation window, timing after 10-20 seconds, and recording CO and CO2Concentration data, CO given in real time by flue gas analyzer2The biomass combustion efficiency was calculated from the concentrations.
According to the utility model discloses preferentially, in step 2), living beings be crop straw or fallen leaves, crop straw be one or the combination more than two kinds among rice, wheat, maize, soybean or the cotton straw, fallen leaves be chinese parasol fallen leaves.
According to the utility model, the air supply flow rate is 4-10L/min in the step 2), and the air supply flow rate is 6-9L/min, and the weight of the biomass to be burned is 5-10 g.
According to the utility model discloses preferentially, in step 3), according to real-time living beings combustion efficiency regulation flow controller in the testing process, the air flow is promoted in the accent when living beings combustion efficiency is less than 0.9, makes the complete combustion of crop straw, guarantees combustion efficiency more than or equal to 0.9, is favorable to simulating the combustion process that the open-air burning of crop straw discharged atmospheric pollutants more accurately, guarantees follow-up completion and simulates the open-air burning of crop straw and produce atmospheric pollutants's sampling and survey work.
The combustion efficiency formula: eta = [ CO ]2 straw burning]/([CO2 straw burning]+[COStraw combustion])
The utility model discloses burner that uses among the test method, distance between nozzle and the burning net, the tonifying qi velocity of flow, the selection of burning material, the volume of burning material, can make burning material experience dehydration, the appearance of the separation out and burning (the appearance of naked light) of volatile matter, the cloudy after flame extinguishes (the surface combustion of coke) and ember formation isophase, the combustion time is of a specified duration, the temperature is high, conform with the open-air combustion process under the actual scene, make burning material truly simulate the open-air combustion process under the indoor circumstance, make its open-air fire burning, avoid smoldering burning, avoid burning inadequately, truthfully, accurate simulation the actual conditions of open-air burning, can truly accurately simulate the whole process of open biomass burning.
The beneficial effects of the utility model reside in that:
1. the utility model discloses a burner is small, and area is few, and required crop straw sample is few, and simple structure, easily operation.
2. The utility model discloses a apart from the cooperation tonifying qi velocity of flow between burner nozzle and the burning net can make living beings carry out the naked light burning, avoids living beings smoldering to burn, avoids burning inadequately, true, accurate simulation the actual conditions of open-air burning, through burning the living beings of quantitative stoving, Detuo testo350pro flue gas analyzer monitoring combustion process in CO and CO2The combustion efficiency is calculated in real time according to the concentration, the long-time open fire combustion is guaranteed through air supplement control in the combustion process, and the process of discharging atmospheric pollutants in open-air combustion of biomass is simulated more accurately and truly.
3. The utility model discloses a burner requires not highly to external environment condition, can normal operating under higher temperature, and the tray is collected to burning ashes makes the device clean convenient after the use, and maintains simply durable.
4. The utility model discloses a flue gas analyzer can follow built-in computer and establish fast and statistical data record and pre-programmed, and real-time measurement duration is long, and interior memory capacity is sufficient, can record test data more.
5. The utility model discloses a fire burning furnace bell and gas transmission pipe inner wall and all adopt Teflon anti-sticking coating, can reduce the wall loss that produces atmospheric pollutants behind the burning of crop straw sample furthest.
Drawings
FIG. 1 is a schematic structural diagram of a combustion device for simulating open-air combustion of biomass to discharge atmospheric pollutants.
In the figure, 1 is a sealing clip, 2 is a transparent observation window, 3 is an electric ignition device, 4 is an electric ignition switch, 5 is a combustion ash collecting tray, 6 is a gas transmission pipe, 7 is a furnace cover, 8 is a sealing ring, 9 is a Deutton 350pro flue gas analyzer, 10 is an asbestos combustion net, 11 is a rigid fixing frame, 12 is an air supply transmission pipe, 13 is a flow controller, 14 is a high efficiency particulate filter (HEPA), 15 is an air supplement pump, and 16 is a combustion furnace shell.
FIG. 2 is a graph showing the effect of using the apparatus of example 1 to simulate the open-air combustion of rice straw with and without air supply to generate atmospheric pollutants.
Detailed Description
The present invention will be further described with reference to fig. 1 and the following examples, but the present invention is not limited thereto.
Emission factor = amount of gaseous pollutants discharged/amount of substances burned.
Example 1:
the utility model provides a simulation open-air burning of crop straw discharges atmospheric pollutants's burner, the structure is shown in figure 1, including one end opening other end sealed burning furnace shell 16, the burning furnace shell is cylindrical shell, burning furnace shell height is 1000mm, the internal diameter is 750mm, it is provided with bell 7 to burn burning furnace shell opening end department, be provided with sealing washer 8 between burning furnace shell opening end and bell, it passes through sealing clamp 1 fixed connection to burn burning furnace shell opening end and bell, the bell is inverted funnel shape, inverted funnel shape's top funnel mouth is connected with gas transmission pipe 6, gas transmission pipe 6 communicates with each other with burning furnace shell inside. The inside wall coating of bell has Teflon anti-sticking coating, and the height of bell 7 is 150mm, bell bottom open end internal diameter position 750mm, bell bottom open end internal diameter and the internal diameter phase-match of burning furnace shell open end, and the inside wall coating of gas transmission pipe 6 has Teflon anti-sticking coating, and gas transmission pipe's internal diameter is 30 mm.
A combustion net 10 is transversely arranged in the combustion furnace shell, the combustion net is a circular asbestos combustion net, a rigid fixing frame 11 is arranged on the periphery of the combustion net, and the other end of the rigid fixing frame is fixed on the inner side wall of the combustion furnace shell. The lower part of the combustion net is provided with an air supply transmission pipe 12, the air supply transmission pipe 12 penetrates through the shell of the combustion furnace and extends out of the shell and is connected with an air supply pump 15, a flow controller 13 and a high efficiency particulate filter (HEPA) 14 are arranged on a pipeline of the air supply transmission pipe 12, and the upper part of the combustion net is provided with a test pipe which extends out of the shell and is connected with a Deutsto 350pro flue gas analyzer 9. A transparent observation window 2 is arranged on the shell at the upper part of the combustion net.
An electric ignition device 3 is arranged at the bottom of the combustion net, and the electric ignition device 3 is electrically connected with an electric ignition switch 4 outside the side wall of the combustion furnace shell. The inner side wall of the air supply transmission pipe 12 is coated with a Teflon anti-sticking coating, and the inner diameter of the air supply transmission pipe is 10-30 mm. The bottom in the combustion furnace shell is provided with a combustion ash collecting tray 5, the end part of an air supply transmission pipe in the combustion furnace shell is provided with a nozzle, the nozzle is opposite to the center of a combustion net, and the distance between the nozzle and the combustion net is 15 cm.
Example 2:
a method of conducting a combustion test using the combustion apparatus of example 1, comprising the steps of:
1) a preparation stage: starting an air supplement pump to blow the combustion device for 4-6 min; firstly, the flue gas analyzer is zeroed and then connected with a combustion device;
2) weighing 10g of clean rice straw, drying in an oven for 24 hours, and placing in a circular asbestos combustion net 10Uniformly spreading, covering a sealing ring 8, covering a funnel-shaped combustion furnace cover 7, tightly fastening four sealing clamps 1 around the furnace cover, ensuring the air tightness of the combustion furnace device, and tightly connecting a gas transmission pipe 6 with an atmospheric aerosol smoke box; opening an air supplement pump 14, adjusting a flow controller 13, controlling the air flow rate to be 6L/min, removing particles in the air through a high efficiency particle filter (HEPA) 14, and introducing the particle-free air into a combustion furnace body 16 through an air supplement transmission pipe 12; turning on the Deuttgot 350pro flue gas analyzer 9, and adjusting to' CO, CO2Measuring and recording data pattern ", observing spectrogram and CO, CO2The initial concentration of (a);
3) pressing the electric ignition switch 4, using the electric ignition device 3, to ignite the rice straw sample (ignition of liquefied gas, ignition time 0.2 s, CO generated by combustion of liquefied gas)2Negligible effect), the combustion of the rice straw is observed through the transparent observation window 2, and after 15 seconds, the timing is started and the data is recorded (aiming at the CO and CO measured by a Deuttgot 350pro smoke analyzer)2Generated by burning rice straws so as to avoid influencing the reliability of real-time monitoring of straw burning efficiency). And judging whether the combustion is smoldering combustion or open combustion by taking the combustion efficiency of 0.9 as a boundary, wherein when the combustion efficiency of the rice straws is more than 0.9, the crop is mainly open combustion, and when the combustion efficiency of the rice straws is less than 0.9, the crop straws are mainly smoldering combustion. CO and CO given in real time by Deuttgot 350pro flue gas analyzer 92The concentration is adjusted according to the real-time combustion efficiency of the rice straws, the air flow is increased when the combustion efficiency of the rice straws is less than 0.9, the rice straws are completely combusted, the combustion efficiency is ensured to be more than 0.9, the combustion process of atmospheric pollutants discharged by open-air combustion of the straws can be more accurately simulated, and the subsequent sampling and determination work of the atmospheric pollutants generated by simulating the open-air combustion of the crop straws can be ensured to be finished.
The combustion test using the combustion apparatus of example 1 was conducted and compared with the non-aerated test, and the results are shown in FIG. 2, and example 2 shows the average CO produced in the aerated combustion test of rice straw2The concentration is 8500ppm, the average CO concentration generated by the method is 740ppm, and the average combustion efficiency of the rice straws is 0.92 & gt 0.9On one hand, the combustion furnace device can improve the combustion efficiency of the crop straws by properly supplementing air, and on the other hand, the combustion furnace device can prolong the open-fire combustion time of the crop straws by properly supplementing air, so that the combustion process of the atmospheric pollutants discharged by the open-air combustion of the crop straws can be better simulated.
Experimental example: influence of different air supply flow on combustion efficiency of different combustion substances
1. The test method of example 2 was used to monitor the emission factor of gaseous pollutants emitted by combustion of five typical Chinese crop stalks (rice, wheat, corn, soybean and cotton stalks) and fallen leaves under a high aeration flow condition at a flow rate of 9L/min (see Table 1). As can be seen from Table 1, the average emission factors of CO in the rice, wheat, corn, soybean and cotton stalks and fallen leaves in the state of full combustion with open flame with high air supply flow are 85.84, 135.44, 96.85, 121.08, 105.05 and 101.99 g/kg respectively; CO 22The average emission factors of (a) are 847.27, 1595.60, 1331.30, 1344.86, 1227.21 and 967.90 g/kg, respectively. Due to different components and structures of the biomass straws, the combustion modes and the combustion characteristics of the biomass straws are different. All experiments were repeated 4 more times to ensure accuracy of the experiments.
Can see through table 1 above, under 9L/min air supplement quantity condition through different crop straws and fallen leaves of test, combustion efficiency has all reached more than 90, and the straw combustion process has included the dehydration, the separation out and the burning of volatile matter (the appearance of naked light), the cloudy after flame extinguishes burns (the surface combustion of coke) and ashes form the stage such as, and the combustion time is of a specified duration, and the temperature is high, consequently accords with basically with the open-air combustion process under the realistic scene, fully proves the utility model discloses a combustion apparatus can simulate the whole process of open biomass burning better.
2. When actual open biomass is combusted, due to factors such as weather, the air supply flow of the environment around the burnt straws is different, and the combustion process of the biomass is influenced. The influence of the air flow of the air supply into the combustion chamber on the combustion process of the biomass straws is mainly three: oxygen amount (air-fuel ratio), combustion temperature (heat generated by the external air) and dilution of particulate matter. In an oxygen-containing atmosphere, there are mainly two different processes or paths for the combustion of fuel: firstly, under the action of high temperature, the fuel is firstly pyrolyzed into volatile components and fixed carbon at the same time, and then the volatile components and the fixed carbon are combusted at the same time; ② fixed carbon and volatile components are simultaneously multi-phase oxidation and combustion. Among them, the oxygen content plays an important role in the combustion mode of biomass and the combustion process of fixed carbon in biomass.
The test method of example 2 was used to test the combustion of five biomass stalks and deciduous leaves at low air supply flow (3L/min). Table 2 shows the conditions of biomass combustion producing gaseous pollutants at low aeration flow.
As can be seen from the table, the average emission factors of CO when the straw and fallen leaves of rice, wheat, corn, soybean and cotton are subjected to open flame combustion under low air supply flow are 117.84, 225.44, 150.19, 160.78, 150.55 and 122.89g/kg respectively; CO 22Respectively 806.28, 1525.60, 1258.50, 1295.24, 1130.21 and 919.77 g/kg; SO (SO)2The average emission factors of (1) are respectively 0.58, 0.60, 0.79, 1.01, 0.63 and 1.13 g/kg; NOXAre 4.11, 3.40, 4.26, 4.19, 4.15 and 3.37 g/kg, respectively. The value of the emission factor is different from the emission factor and the combustion efficiency under the condition of high air supply flow.
CO and CO2At low air supply flow, the CO content generated in the biomass combustion process is generally higher than that in the combustion experiment at high air supply flow, and at the same time, the CO content is higher2The content is reduced, resulting in a reduction in combustion efficiency of the entire process. Under the condition of high air supply flow, the combustion efficiency can reach more than 90 percent, and when the air supply flow is reduced, the air-fuel ratio is reduced, and the combustion is carried outEfficiency can reduce to some extent, consequently, the utility model discloses an tonifying qi flow can make living beings carry out the naked light burning, avoids living beings smoldering to burn, avoids burning inadequately, true, accurate simulation open-air burning's actual conditions.
Claims (9)
1. The utility model provides a simulation living beings open-air burning discharges combustion apparatus of atmospheric pollutants, including the sealed burning furnace casing of burning of one end opening other end, be provided with the bell at burning furnace casing opening end, bell and burning furnace casing sealing connection, a serial communication port, the top of bell is provided with the gas transmission pipe, the inside intercommunication of gas transmission pipe and burning furnace casing, transversely be provided with the burning net in burning furnace casing, be provided with the tonifying qi transmission pipe in the lower part of burning net, the tonifying qi transmission pipe passes burning furnace casing and extends to the casing outside and be connected with the tonifying qi pump, be provided with flow controller and particulate filter on the pipeline of tonifying qi transmission pipe, upper portion at the burning net is provided with the test tube, the test tube passes burning furnace casing and extends to the casing outside and is connected with flue gas analyzer.
2. The apparatus of claim 1, wherein a sealing ring is disposed between the open end of the burner housing and the cover, and the open end of the burner housing is fixedly connected to the cover by a sealing clip.
3. The combustion device for simulating the open-air combustion of biomass to discharge atmospheric pollutants as claimed in claim 1, wherein the combustion furnace shell is a cylindrical shell, the furnace cover is in an inverted funnel shape, a top funnel mouth of the inverted funnel shape is connected with the gas delivery pipe, the inner diameter of the open end of the furnace cover is matched with that of the open end of the combustion furnace shell, and a transparent observation window is arranged on the shell at the upper part of the combustion net.
4. The combustion device for simulating the open-air combustion of biomass to discharge atmospheric pollutants as claimed in claim 1, wherein the height of the combustion furnace shell is 1200mm, the inner diameter is 800mm, the inner side wall of the furnace cover is coated with a Teflon anti-sticking coating, the height of the furnace cover is 200mm, the inner diameter of the bottom opening end of the furnace cover is 800mm, the inner side wall of the gas transmission pipe is coated with a Teflon anti-sticking coating, and the inner diameter of the gas transmission pipe is 20-40 mm.
5. The combustion device for simulating the open-air combustion of biomass to discharge atmospheric pollutants as claimed in claim 1, wherein the combustion net is a circular asbestos combustion net, a rigid fixing frame is arranged on the periphery of the combustion net, and the other end of the rigid fixing frame is fixed on the inner side wall of the shell of the combustion furnace.
6. The combustion device for simulating the open-air combustion of biomass to discharge atmospheric pollutants as claimed in claim 1, wherein an electric ignition device is arranged at the bottom of the combustion net, the electric ignition device is electrically connected with an ignition switch outside the side wall of the shell of the combustion furnace, and the electric ignition device is tightly attached to the bottom of the combustion net.
7. The combustion device for simulating open-air combustion of biomass to discharge atmospheric pollutants as claimed in claim 1, wherein the flue gas analyzer is a Deutton 350pro flue gas analyzer, and the particulate filter is a high efficiency air particulate filter.
8. The combustion device for simulating the open-air combustion of biomass to discharge atmospheric pollutants as claimed in claim 1, wherein the inner side wall of the air supply transmission pipe is coated with a Teflon anti-sticking coating, the inner diameter of the air supply transmission pipe is 10-30mm, and a collecting tray is arranged at the bottom in the combustion furnace shell.
9. The combustion device for simulating the open-air combustion of biomass to discharge atmospheric pollutants as claimed in claim 1, wherein a nozzle is arranged at the end of the air supply transmission pipe in the combustion furnace shell, the nozzle is opposite to the center of the combustion net, and the distance between the nozzle and the combustion net is 10-15 cm.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109596771A (en) * | 2018-12-25 | 2019-04-09 | 复旦大学 | A kind of burner and combustion testing method of simulation biomass open burning discharge atmosphere pollution |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109596771A (en) * | 2018-12-25 | 2019-04-09 | 复旦大学 | A kind of burner and combustion testing method of simulation biomass open burning discharge atmosphere pollution |
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