CN102393403B - Device and method for detecting combustion characteristic of tail gas containing high-concentration CO - Google Patents
Device and method for detecting combustion characteristic of tail gas containing high-concentration CO Download PDFInfo
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 92
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000000779 smoke Substances 0.000 claims abstract description 58
- 238000001514 detection method Methods 0.000 claims abstract description 16
- 238000009413 insulation Methods 0.000 claims abstract description 9
- 238000012545 processing Methods 0.000 claims abstract description 8
- 239000007789 gas Substances 0.000 claims description 91
- 238000010304 firing Methods 0.000 claims description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000002737 fuel gas Substances 0.000 claims description 13
- 238000012360 testing method Methods 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000000523 sample Substances 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 239000000567 combustion gas Substances 0.000 claims description 7
- 229910052593 corundum Inorganic materials 0.000 claims description 7
- 239000010431 corundum Substances 0.000 claims description 7
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 238000011160 research Methods 0.000 abstract description 9
- 230000006698 induction Effects 0.000 abstract 1
- OBSZRRSYVTXPNB-UHFFFAOYSA-N tetraphosphorus Chemical compound P12P3P1P32 OBSZRRSYVTXPNB-UHFFFAOYSA-N 0.000 description 14
- 239000000203 mixture Substances 0.000 description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 7
- 239000000446 fuel Substances 0.000 description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 5
- 229910002091 carbon monoxide Inorganic materials 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 5
- 229910052698 phosphorus Inorganic materials 0.000 description 5
- 239000011574 phosphorus Substances 0.000 description 5
- 238000004064 recycling Methods 0.000 description 5
- 230000004907 flux Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 239000002912 waste gas Substances 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 206010006895 Cachexia Diseases 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 1
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
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- 238000010438 heat treatment Methods 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 208000016318 wasting Diseases 0.000 description 1
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Abstract
The invention discloses a device and method for detecting the combustion characteristic of tail gas containing high-concentration CO. The device consists of a gas distribution induction system, a combustion system, a data acquisition processing system and a smoke discharge system. In the invention, a combustion chamber of the combustion system adopts a heat-insulation combustion mode, and a good heat insulation effect is realized; the system is uniform and stable; as the smoke discharge system is arranged in the device, the safe operation of the detection is ensured; research on the combustion characteristic of the tail gas with different CO components can be performed, and the research on the combustion characteristic of the tail gas can be performed in laboratories and production practice; and the device has the advantages of high feasibility, flexible detection mode, simple process, high safety, good stability and the like, and can be used for controlling the air input and air ratio.
Description
Technical field
The invention belongs to the recovery of heat energy and utilize technical field, relating to a kind of high concentration CO exhaust combustion characteristic detection device that contains, and containing high concentration CO exhaust combustion characteristic detecting method.
Background technology
China's iron and steel metallurgical industry and chemical industry development are very fast, in production technology, great majority adopt the higher production equipments of energy consumption such as electric furnace, blast furnace, converter, it produces a large amount of waste gas, used heat resource, in tail gas, contain a large amount of CO compositions and also have in addition the poisonous and harmful substances such as carbon dioxide, sulfuretted hydrogen, hydrogen fluoride, hydrogen phosphide, any discharge of this type waste gas has caused serious pollution to environment, affects the normal operation that enterprise produces.Along with China strengthens pollutant discharge in compliance with the standard and energy-saving and cost-reducing requirement, the recycling of waste gas, used heat resource will become to realize pollutes qualified discharge and energy-saving and cost-reducing important means.There is value containing high concentration CO tail gas because of its calorific value, enterprise tends to utilize it to do fuel, and the process equipments such as heating boiler, kiln body, make exhaust combustion reach optimum efficiency, obtain optimum process condition, must just study the combustion characteristics containing high concentration CO tail gas.
Be utilized as example with yellow phosphoric tail gas, in phosphorus production technique, adopting electric furnace is smelting equipment, and one ton of yellow phosphorus of every production in production run just produces approximately 2500～3000 cubic metres of yellow phosphoric tail gas simultaneously, wherein contain 75%～90% carbon monoxide, its calorific value arrives 11723 kJ/m
3.Chinese yellow phosphorus production capacity is 2,300,000 t/a now, output approximately 700,000 t/a in recent years, tail gas generation approximately 2.1 × 10
9m
3/ a, and the utilization factor less than 40% of yellow phosphoric tail gas, unnecessary tail gas igniting emptying, causes very big pollution to environment.Carbon monoxide resource in tail gas is not rationally utilized, and causes that phosphorus production energy consumption is large, cost is high, and a large amount of wastings of resources and serious environmental pollution have become the principal element of restriction phosphorous chemical industry development, exceed every year 1500000000 m simultaneously
3cO resource be wasted.Along with China strengthens pollutant discharge in compliance with the standard and energy-saving and cost-reducing requirement, the recycling of waste gas, used heat resource will become to realize pollutes qualified discharge and energy-saving and cost-reducing important means." Yellow Phosphorus Industry entry criteria " promulgated in various places in recent years, and by strictly controlling the investment construction of yellow phosphorus enterprise, to existing small scale, heavy-polluted small-sized yellow phosphorus enterprise carries out time limit and eliminates, closes, removes." Yunnan Province's Yellow Phosphorus Industry entry criteria " regulation of Yunnan Province's promulgation in 2010: yellow phosphorus enterprise must build the comprehensive utilization of resources such as yellow phosphoric tail gas, slag facility, and phosphorus production enterprise is faced with the challenge of existence.
In order to make full use of yellow phosphoric tail gas, reduce current tail gas clean-up cost, reduce the pollution to surrounding enviroment, existing yellow phosphorus enterprise faces the restriction of entry criteria, actively seek the utilization of various ways to yellow phosphoric tail gas resource, a lot of scholars have also proposed various ways to the recycling of yellow phosphoric tail gas.Because yellow phosphorus enterprise disperses, tail gas amount is determined because of the size of capacity, and the main mode of yellow phosphoric tail gas recycling is remained to fuel utilization, most for substituting coal burning boiler, or fuel gas generation.In phosphorus production process, due to the ore composition difference of different location, Different Altitude, the raw material supply of phosphorus production enterprise is by all kinds of means, cause produced yellow phosphorus exhaust gas composition changeable, so seek the combustion characteristics for boiler or genset yellow phosphorus exhaust gas, obtaining its best combustion method and burning structure, is to improve the effective method of its thermal efficiency and utilization factor, is also to guarantee boiler or electricity generation system is stable, necessity of safe operation.
Since the nineties in 20th century, domestic many yellow phosphorus enterprises or research unit are to utilizing yellow phosphoric tail gas to carry out some trials as boiler fuel, mainly the fuel that yellow phosphoric tail gas is used as to middle low-pressure boiler, as for dried feed, produce hot water and steam etc., in recent years some yellow phosphorus enterprises attempts yellow phosphorus exhaust gas generating, but yet there are no relevant report for the research of the combustion characteristics of yellow phosphoric tail gas.
Summary of the invention
The object of this invention is to provide a kind of containing high concentration CO exhaust combustion characteristic detecting method and device, in laboratory or industry spot utilize present device, detect exhaust combustion performance data, and by notebook data, actual exhaust gas combustion process is carried out to rational technology controlling and process adjustment, control different CO concentration, different air-fuel ratio, obtain combustion characteristics and smoke density containing high concentration CO tail gas in various processes situation.The high concentration CO exhaust gas component that contains under various processes condition is carried out to on-line monitoring, get the tail gas sample of some heterogeneities compositions, then burn in firing chamber from the air of different excess air factors.In testing process, the different test sample experimental tests data, particularly smoke components of periodic logging and temperature of combustion, observe correlationship between the two.Launch from dynamics and thermodynamics two aspects of exhaust combustion, control different combustion feed gas compositions and air ration, then carry out comparative study to detecting data, in conjunction with relevant dynamics Thermodynamic Law, finally draw dynamics and Thermodynamic Law containing high concentration CO exhaust combustion.
In order to realize above-mentioned purpose of the present invention, the invention provides a kind of containing high concentration CO exhaust combustion characteristic detection device, it is made up of distribution gas handling system, combustion system, data acquisition processing system, smoke evacuation system, distribution gas handling system is communicated with combustion system, and data acquisition system (DAS) and smoke evacuation system are arranged in combustion system.
Distribution gas handling system described in the present invention comprises fuel gas supply part and combustion air supply portion, distribution gas handling system comprises fuel gas supply part and combustion air supply portion, wherein fuel gas supply part comprises source of the gas 1, pressure-regulating valve 2, water seal tank 3, flow control valve 4 and flowmeter 5, source of the gas 1 communicates with pressure-regulating valve 2, pressure-regulating valve 2 communicates with water seal tank 3, water seal tank 3 communicates with flowmeter 5 by flow control valve 4, the tail gas interface 22 on the burner 9 of flowmeter 5 one end access combustion systems; Combustion air supply portion comprises blower fan 6, flow control valve 7 and flowmeter 8, and flow control valve 7 is communicated with blower fan 6 with flowmeter 8, and flowmeter 8 accesses the air interface 23 on the burner 9 of combustion system, and coefficient of excess air span is 0.7～1.5.
Flowmeter 5 and 8 described in the present invention is glass rotameter.
Combustion system described in the present invention comprises that combustion system comprises burner 9 and firing chamber 10, and burner 9 passes in firing chamber 10, and wherein burner comprises tail gas interface 22, air interface 23 and burner 24; On firing chamber, be provided with fire hole 16, thermopair socket 20 and smoke components Acquisition Instrument socket 21, smoke components Acquisition Instrument socket 21 positions are corresponding with thermopair socket 20 positions, can different check point positions be set by reality detection or production testing requirement.Insulation firing chamber is made up of liner corundum body 17, lightweight alumina silicate fibre heat-insulation layer 18 and steel structure body 19, and alumina silicate fibre heat-insulation layer 18 is positioned between steel structure body and liner corundum body, and thickness is 5-10cm.
The distance of thermocouple jack described in the present invention and bottom, firing chamber is respectively 100mm, 300 mm, 650 mm, 1100 mm.
Data acquisition processing system described in the present invention is that after carrying out acquisition process and burning for temperature data, smoke components data are carried out acquisition process, data acquisition processing system comprises smoke components measuring instrument 12, smoke components display instrument 13, thermopair 14 and temperature digital display instrument 15, thermopair 14 inserts the thermopair socket 20 on firing chamber 10, temperature digital display instrument 15 is connected with thermopair, smoke components measuring instrument 12 inserts the smoke components Acquisition Instrument socket 21 on firing chamber 10, and smoke components display instrument 13 is connected with smoke components measuring instrument 12.
Smoke evacuation system described in the present invention is provided in a side of the chimney 11 of 10 upper ends, firing chamber, and after burning, flue gas is drawn firing chamber, is discharged in air.
Another object of the present invention is to provide a kind of containing high concentration CO exhaust combustion characteristic detecting method, introduced to water seal tank 3 20～300 DEG C contain after high concentration CO tail gas is reduced pressure by pressure-regulating valve 2 by source of the gas 1 through airtight pipeline, under the prerequisite of carrying out safely by water seal tank 3 warranty tests, regulating exhaust flow through flow control valve 4 is 0.5～2.5m
3/ h, enters in burner 9 finally by inflow-rate of water turbine meter 5, combustion air drawn by blower fan 6 after by after airtight pipeline access flow meter 8, enter burner 9, adjust flux variable valve 7 is controlled coefficient of excess air α=0.7～1.5, electronic ignition device is stretched into fire hole 16 and light tail gas and the combustion air of introducing respectively burner 9, lighting rear fire hole 16 use heat-barrier materials stops up, combustion gas is lighted rear flame at the interior adiabatic combustion in firing chamber 10, thermopair 14 is inserted in the thermopair socket 20 on firing chamber, temperature data is transferred on temperature digital display instrument 15, smoke components measuring instrument 12 probes insert in smoke components Acquisition Instrument socket 21 simultaneously, detect smoke components, data after mensuration are sent on smoke components display instrument 13, tail gas after burning enters in air through the smoke evacuation system 11 of top, firing chamber.
The principle containing high concentration CO exhaust combustion characteristic detecting method the present invention relates to is as follows:
Gaseous combustion mode of the present invention adopts diffusion type burning, detect containing high concentration CO exhaust combustion performance data by test, by the combustion air after the unstripped gas containing high concentration CO exhaust gas component and air compressor machine compression, be adjusted to after desired flow by closed conduit and gas meter, be transported to respectively in burner, light combustion gas with electronic ignition device, combustion gas is burnt in firing chamber, by being reserved in the thermopair socket on firing chamber, measure the temperature that fuel gas buring produces, utilize flue gas analyzer to measure the smoke components in fuel gas buring process simultaneously.Relation between contrast temperature of combustion and smoke components, seeks its funtcional relationship, and the thermodynamics and kinetics rule while studying exhaust combustion with this provides accurately data and theory reliably for do thermal source recycling containing high concentration CO tail gas.
Beneficial effect of the present invention:
A kind of containing high concentration CO exhaust combustion characteristic detection device and method thereof, be to solve containing in the comprehensive utilization of high concentration CO tail gas, the exercisable method and apparatus of one of fuel gas buring characteristic when tail gas fuel gas generation, boiler use or do thermal source for kiln body.This method and device can detect research to exhaust combustion characteristic in laboratory and production practices, have the advantage such as can control air inflow, air proportioning, test sample feasibility is high, detection mode is flexible.
The present invention detects research to the combustion characteristics containing high concentration CO tail gas more accurately, and can set as required different tail gas sample sizes and air ration and detect the combustion characteristics of research tail gas in fuel gas generation and boiler combustion, be conducive to tail gas and do the research that fuel fully utilizes.The combustion characteristics pick-up unit the present invention relates to is atmospheric pressure state, and stability in use is good, security performance is high.Test method technique is simpler and clearer, device simple.
Brief description of the drawings
Below in conjunction with drawings and Examples, the present invention is further described, but do not limit the present invention with this.
Fig. 1 is containing high concentration CO exhaust combustion characteristic detecting method process flow diagram.
Fig. 2 is containing high concentration CO exhaust combustion characteristic detection device structural representation.
Fig. 3 is the structural representation containing firing chamber in high concentration CO exhaust combustion characteristic detection device and smoke evacuation system.
Fig. 4 is containing burner structure schematic diagram in high concentration CO exhaust combustion characteristic detection device.
Fig. 5 is that gas flow is 1.0 m
3/ h, temperature of combustion under four different coefficient of excess air (Δ L=0mm).
Fig. 6 is that air event coefficient is 1.3 o'clock temperature of combustion (Δ L=20mm) under corresponding gas flow.
Fig. 7 is that gas flow is 1.0m
3o in flue gas under different coefficient of excess air when/h
2, CO, CO
2content.
1 source of the gas in figure, 2 pressure-regulating valves, the 3rd, water seal tank, the 4th, flow control valve, the 5th, flowmeter, the 6th, blower fan, the 7th, flow control valve, the 8th, flowmeter, the 9th, burner, the 10th, firing chamber, the 11st, chimney, the 12nd, smoke components measuring instrument, the 13rd, smoke components display instrument, the 14th, thermopair, the 15th, temperature digital display instrument, the 16th, fire hole, the 17th, liner corundum structure, the 18th, alumina silicate fibre heat-insulation layer, 19 steel structure bodies, the 20th, thermopair socket, the 21st, smoke components Acquisition Instrument socket, the 22nd, tail gas interface, the 23rd, air interface, 24 burners.
Embodiment
In Fig. 2, distribution gas handling system, combustion system, data acquisition processing system, smoke evacuation system four parts are installed successively; Distribution gas handling system comprises fuel gas supply part and combustion air supply portion, wherein fuel gas supply part comprises source of the gas 1, pressure-regulating valve 2, water seal tank 3, flow control valve 4 and glass rotameter 5, source of the gas 1 communicates with pressure-regulating valve 2, pressure-regulating valve 2 communicates with water seal tank 3, water seal tank 3 communicates with flowmeter 5 by flow control valve 4, the tail gas interface 22 on the burner 9 of flowmeter 5 one end access combustion systems; Combustion air supply portion comprises blower fan 6, flow control valve 7 and glass rotameter 8, and flow control valve 7 is communicated with blower fan 6 with flowmeter 8, and flowmeter 8 accesses the air interface 23 on the burner 9 of combustion system.
Combustion system comprises that combustion system comprises burner 9 and firing chamber 10, and burner 9 passes in firing chamber 10, and wherein burner comprises tail gas interface 22, air interface 23 and burner 24; On firing chamber, be provided with fire hole 16, thermopair socket 20 and smoke components Acquisition Instrument socket 21, smoke components Acquisition Instrument socket 20 positions are corresponding with thermopair socket 20 positions.Firing chamber is made up of liner corundum body 17, lightweight alumina silicate fibre heat-insulation layer 18 and steel structure body 19, and alumina silicate fibre heat-insulation layer 18 is positioned between steel structure body and liner corundum body, and thickness is 5cm
.
Data acquisition processing system comprises smoke components measuring instrument 12, smoke components display instrument 13, thermopair 14 and temperature digital display instrument 15, thermopair 14 inserts the thermopair socket 20 on firing chamber 10, temperature digital display instrument 15 is connected with thermopair, smoke components measuring instrument 12 inserts the smoke components Acquisition Instrument socket 21 on firing chamber 10, smoke components display instrument 13 is connected with smoke components measuring instrument 12, and chimney 11 is located at 10 upper ends, firing chamber.
embodiment 1
Yellow phosphoric tail gas combustion characteristic research: electronic ignition device is stretched in fire hole, open electronic ignition device, open yellow phosphoric tail gas flow control valve simultaneously, yellow phosphoric tail gas initial temperature is 106 DEG C, lights yellow phosphoric tail gas is 1.0m by flow control valve adjust flux
3/ h, clogs fire hole with heat-insulating heat-preserving material, prevents that air from being entered by fire hole; Open air flow rate adjustment valve, regulating air mass flow is that excess air coefficient is 1.00,1.10,1.20,1.30; Combustion gas after lighting is burnt in firing chamber, stretches into four thermopair sockets on firing chamber with thermopair, collecting temperature data respectively, and four thermopair interfaces are respectively 100mm, 300 mm, 650 mm, 1100 mm apart from the position of bottom, firing chamber; Utilize fume component analysis instrument probe to stretch in smoke components Acquisition Instrument socket reserved on firing chamber, detect smoke components data, four fume component analysis instrument interfaces are respectively 100mm, 300 mm, 650 mm, 1100 mm apart from the position of bottom, firing chamber.Thermopair and flue gas analysis instrument probe are 0mm apart from firing chamber central point distance, and detected temperatures data are shown in Fig. 5.
In combustion process, in the time that coefficient of excess air is 1.00, first interface CO concentration is 18%, second interface CO concentration is that 15%, the second interface CO concentration is that 13%, the four interface CO concentration is 9%, show that exhaust combustion is insufficient, do not fire composition relatively many, coefficient of excess air is unreasonable, and the flue gas after burning enters in air by the chimney of upper end, firing chamber.
From Fig. 5, we can see that the high energy of yellow phosphoric tail gas temperature of combustion reaches 920 DEG C of left and right, and in the time that exhaust flow is certain, same position temperature of combustion improves with the increase of coefficient of excess air; In this experimentation, temperature extreme higher position is at 300mm place, and under this gas flow, combustion flame flame head appears at 300mm place.In practice process, can utilize this experimental result, according to gas composition in actual condition and flow rate calculation combustion flame flame head, can more effectively utilize heat resource, realize resources effective utilization.
embodiment 2
Electronic ignition device is stretched into igniting aerial, open electronic ignition device, open yellow phosphoric tail gas flow control valve simultaneously, yellow phosphoric tail gas temperature is 110 DEG C, lights yellow phosphoric tail gas, is 1.0,1.1,1.2,1.3,1.4m by flow control valve adjust flux
3/ h.Clog fire hole with heat-insulating heat-preserving material, prevent that air from being entered by fire hole.Open air flow rate adjustment valve, regulate coefficient of excess air while being corresponding gas flow 1.3 o'clock.Combustion gas after lighting is carried out in firing chamber, stretches into four thermopair sockets on firing chamber, collecting temperature data with thermopair.Four thermopair interfaces are respectively 100mm apart from the position of bottom, firing chamber, 300 mm, and 650 mm, 1100 mm, are 20mm apart from firing chamber distance between center line, and temperature data shows by digital indicator, and data are shown in Fig. 6.
In Fig. 6, regulate different gas flows, 1.3 while regulating coefficient of excess air to be corresponding gas flow, thermocouple junction is apart from firing chamber center line 20mm.We can find out under same air coefficient of excess, and the gas-fired range of temperature under different gas flows is little, particularly particularly outstanding at the temperature data at all burnt 650mm place.In actual industrial operation, when realizing smooth combustion when economizing on resources at needs, can utilize this experiment conclusion, find most suitable operating point control, economize on resources.
embodiment 3
Electronic ignition device is stretched into igniting aerial, open electronic ignition device, open yellow phosphoric tail gas flow control valve simultaneously, yellow phosphoric tail gas temperature is 78 DEG C, lights yellow phosphoric tail gas, is 1.0m by flow control valve adjust flux
3/ h.Clog fire hole with heat-insulating heat-preserving material, prevent that air from being entered by fire hole.Open air flow rate adjustment valve, regulating respectively air mass flow excess air coefficient is 0.8,0.9,1.0,1.1,1.2,1.3,1.4.Combustion gas after lighting is carried out in firing chamber, and the smoke components that gos deep into 1100mm eminence with smoke components collector gathers in hole, detects smoke components, and smoke components data are shown in Fig. 7.
Fig. 7 is O in yellow phosphoric tail gas combustion exhaust gas composition
2, CO, CO
2situation of change, when gas flow is 1.0m
3when/h, under different coefficient of excess air, from the variation tendency of O2 and CO, being 1.3 o'clock at coefficient of excess, trend there is significant change in both, and CO amount reduces to best, and O
2content increases to some extent, illustrates that with this understanding, exhaust combustion is complete, reaches best combustion condition.In actual condition, accomplish that burning is the most complete, reach best object, controlling coefficient of excess air is topmost factor, therefore this experimental result has certain meaning to instructing actual process to produce.
Claims (6)
1. one kind contains high concentration CO exhaust combustion characteristic detection device, it is characterized in that comprising distribution gas handling system, combustion system, data acquisition processing system and smoke evacuation system, distribution gas handling system is communicated with combustion system, and data acquisition system (DAS) and smoke evacuation system are arranged in combustion system;
Wherein said distribution gas handling system comprises fuel gas supply part and combustion air supply portion, wherein fuel gas supply part comprises source of the gas (1), pressure-regulating valve (2), water seal tank (3), first flow variable valve (4) and first flow meter (5), source of the gas (1) communicates with pressure-regulating valve (2), pressure-regulating valve (2) communicates with water seal tank (3), water seal tank (3) communicates with first flow meter (5) by first flow variable valve (4), the tail gas interface (22) on the burner (9) of first flow meter (5) one end access combustion system; Combustion air supply portion comprises blower fan (6), second adjustable valve (7) and the second flowmeter (8), second adjustable valve (7) is communicated with blower fan (6) with the second flowmeter (8), the air interface (23) on the burner (9) of the second flowmeter (8) access combustion system;
Described combustion system comprises burner (9) and firing chamber (10), and burner (9) passes into (10) in firing chamber, and wherein burner comprises tail gas interface (22), air interface (23) and burner noz(zle) (24); On firing chamber, be provided with fire hole (16), thermopair socket (20) and smoke components Acquisition Instrument socket (21), smoke components Acquisition Instrument socket (21) position is corresponding with thermopair socket (20) position;
Described data acquisition processing system comprises smoke components measuring instrument (12), smoke components display instrument (13), thermopair (14) and temperature digital display instrument (15), thermopair (14) inserts the thermopair socket (20) on firing chamber (10), temperature digital display instrument (15) is connected with thermopair, smoke components measuring instrument (12) inserts the smoke components Acquisition Instrument socket (21) on firing chamber (10), and smoke components display instrument (13) is connected with smoke components measuring instrument (12).
2. according to containing high concentration CO exhaust combustion characteristic detection device described in claim 1, it is characterized in that first flow meter (5) and the second flowmeter (8) are glass rotameter.
3. according to containing high concentration CO exhaust combustion characteristic detection device described in claim 1, it is characterized in that the distance of thermocouple jack and bottom, firing chamber is respectively 100mm, 300 mm, 650 mm, 1100 mm.
4. according to containing high concentration CO exhaust combustion characteristic detection device described in claim 1, it is characterized in that insulated combustion chamber comprises steel structure body (19), liner corundum structure (17), the alumina silicate fibre heat-insulation layer (18) that in the middle of steel structure body and liner corundum structure, Jacket thickness is 5-10cm.
5. according to containing high concentration CO exhaust combustion characteristic detection device described in claim 1, it is characterized in that: smoke evacuation system is chimney (11).
6. adopt device described in claim 1 to contain the method for high concentration CO exhaust combustion attribute testing, it is characterized in that: introduced to water seal tank (3) 20～300 DEG C contain after high concentration CO tail gas is reduced pressure by pressure-regulating valve (2) by source of the gas (1) through airtight pipeline, under the prerequisite of carrying out safely by water seal tank (3) warranty test, regulate exhaust flow for being different numerical value through first flow variable valve (4), enter in burner (9) finally by crossing first flow meter (5), combustion air is accessed after the second flowmeter (8) by airtight pipeline after being drawn by blower fan (6), enter burner (9), regulate second adjustable valve (7) to control coefficient of excess air α=0.7～1.5, electronic ignition device is stretched into fire hole (16) and light tail gas and the combustion air of introducing burner (9), lighting rear fire hole (16) stops up with heat-barrier material, rear flame adiabatic combustion in firing chamber (10) is lighted in combustion gas, thermopair (14) is inserted in the thermopair socket (20) on firing chamber, temperature data is transferred on temperature digital display instrument (15), smoke components measuring instrument (12) probe inserts in smoke components Acquisition Instrument socket (21) simultaneously, detect smoke components, data after mensuration are sent on smoke components display instrument (13), tail gas after burning enters in air through the smoke evacuation system (11) of top, firing chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110300822.8A CN102393403B (en) | 2011-10-09 | 2011-10-09 | Device and method for detecting combustion characteristic of tail gas containing high-concentration CO |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110300822.8A CN102393403B (en) | 2011-10-09 | 2011-10-09 | Device and method for detecting combustion characteristic of tail gas containing high-concentration CO |
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| CN103323230B (en) * | 2013-07-10 | 2016-06-01 | 佛山市广顺电器有限公司 | Gaseous combustion nozzle characteristic testing method and device |
| CN109387403B (en) * | 2018-12-03 | 2021-01-22 | 山东恒利检测技术有限公司 | Combustion waste gas sampling detection research device |
| CN111023118A (en) * | 2019-10-29 | 2020-04-17 | 河南佰利联新材料有限公司 | Tail gas combustion treatment method and system |
| CN111175345A (en) * | 2020-01-03 | 2020-05-19 | 同济大学 | SOFC tail gas utilization research experiment system |
| CN112285158B (en) * | 2020-10-29 | 2022-03-22 | 攀钢集团攀枝花钢铁研究院有限公司 | Device and method for testing combustion characteristics of metallurgical gas |
| CN112937278A (en) * | 2021-02-04 | 2021-06-11 | 浙江吉利控股集团有限公司 | Air energy heat insulation external combustion power system and driving method |
| CN115183248B (en) * | 2022-07-08 | 2023-08-11 | 江苏方诚环保科技有限公司 | Chemical waste gas combustion treatment method and system based on RTO device |
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