CN103672868A - Numerical control pulverized coal gasification burner - Google Patents

Numerical control pulverized coal gasification burner Download PDF

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Publication number
CN103672868A
CN103672868A CN201310676556.8A CN201310676556A CN103672868A CN 103672868 A CN103672868 A CN 103672868A CN 201310676556 A CN201310676556 A CN 201310676556A CN 103672868 A CN103672868 A CN 103672868A
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China
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gasification furnace
gasification
air
combustor
numerical control
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CN201310676556.8A
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Chinese (zh)
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李延新
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李延新
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Priority to CN201310676556.8A priority Critical patent/CN103672868A/en
Publication of CN103672868A publication Critical patent/CN103672868A/en

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Abstract

The invention discloses a numerical control pulverized coal gasification burner comprising a gasification furnace with an inner cavity, wherein the front end of the gasification furnace is provided with a burning chamber, and an outlet of the burning chamber is used as a fire outlet; the top of the gasification furnace is vertically provided with a primary pulverizer air inlet which is communicated with the inner cavity of the gasification furnace after passing through the top wall of the gasification furnace; a blast blower matched with the top of the gasification furnace is located at the side of the primary pulverizer air inlet, far away from the fire outlet, and an air supply outlet of the blast blower is matched with a shell of the wall of the gasification furnace. The numerical control pulverized coal gasification burner disclosed by the invention can be used for overcoming defects such as poor environment protection property, inconvenience in use, high production cost and the like in the prior art and has the advantages of good environment protection property, convenience in use and low production cost.

Description

A kind of numerical control coal dust gasification combustor
Technical field
The present invention relates to coal-dust combustion device technical field, particularly, relate to a kind of numerical control coal dust gasification combustor.
Background technology
From resources reserve Lai Kan China, be that rich coal is oil-poor, from energy resource structure Lai Kan China of large-sized boiler kiln, be the few oil of many coals at present, from reducing country, should advocate use coal-firedly concerning the angle that oil relies on, everybody more needs to burn coal the user's request reducing production costs from cutting down expenses.But a lot of traditional coal combustion equipment thermal efficiency is low, chimney black smoke is billowing, not only causes the huge waste of the energy but also has caused very large pollution to environment.In the face of energy-conservation and environmental protection this to contradiction, the Novel coal fired device of applicating energy-saving environmental protection is domestic important topic, wherein coal gasification burning is the important channel of realizing energy-conserving and environment-protective double goal.
The present situation of kiln field gas generator and the application of coal burner, mainly comprise the following aspects:
(1) gas generator is in the application in kiln field
Domestic once had the user of bituminous mixing plant (open kiln) to attempt using gas producer, eventually because not meeting need of production, accuses and lose, trace it to its cause mainly contain following some:
The production of bituminous mixing plant is step with using with stopping, and gas producer as shown in Figure 1 from lighting a fire to, produce coal gas must be through the longer time, when mixing machine stops, this stove flame-out also has problem, therefore can not want just to open and open, wants to stop just stopping.
As shown in Figure 1, this gas producer comprises charging apparatus (as charging apparatus 2), combustion furnace, ash-pan (as ash-pan 9) and the blower fan (blower fan 10) that from up to down coordinates successively installation.The entrance of charging apparatus is fuel inlet (as fuel inlet 1), is provided with grey-way (as grey-way 8) on ash-pan.Above combustion furnace, be provided with poke hole (poke hole 3), the interior of combustion furnace is shaft (as shaft 4), on shaft, be provided with gas exit (as gas exit 6), on gas exit, be provided with gas export control (gas export control 5), bottom inside at combustion furnace is provided with fire grate (as fire grate 7), in combustion furnace middle inside, is from up to down provided with successively dead level, drying layer, destructive distillation layer, reducing zone, burning zone and grieshoch.
In order to guarantee product quality, aggregate temperature must be stabilized in 160 ℃ of above setting values.Therefore the power output of burner should change along with the water content of sandstone material and the variation of material loading amount, and this just requires flame at least should have the adjusting ratio of 4:1.Because the surface area of coal cinder is relatively very little, it is very slow that redox reaction occurs, and obvious conventional gas producer can not be realized and regulate on a large scale ratio.
Its calorific value of the water-gas that in coal gas, calorific value is higher only has 3000 much cards, and the mixing plant of 5000 types hour air consumption can reach 8000m 3, for the normal volume of producing gas producer can be very large, also to there is a very large air accumulator, coal gas of high temperature can be lost in vain a lot of heat energy after air accumulator cooling.
Gas producer and gas burner are two independently unit, and complete set of equipments cost can be higher, use operation also inconvenient, have increased again floor space and operation expense simultaneously.
Gas generator exists much hidden danger while moving for a long time, very easily produce the pollutants such as a large amount of hydrogen sulfide, tar, phenol water, and air, environment and human body etc. are had to larger infringement, and the burnt tiny fragments of stone, coal, etc. of association also can produce secondary pollution.In addition, the main component of water-gas is carbon monoxide and hydrogen, in starting ignition and docking process, the gas of internal system is often in explosion ratio, must strictly carry out nitrogen replacement and diffuse work, and misoperation or gas leakage very easily cause blast and the serious accident such as poisoning.
(2) application of kiln field coal burner
Because various factors makes gas producer, can not be applied on the kilns such as asphalt mixture machine, in order to reduce production costs, domestic a lot of asphalt mixing plants at present are all being used coal burner.The maximum feature of this kind of coal burner is exactly: extensive product orientation and filthy visual impression and low control function, its shortcoming be mainly following some:
Coal dust spray into direction and flame move towards identical, coal dust enters in stove that initial stage temperature is very low is not lighted, so in stove, has significantly " black duration and degree of heating ", in fact coal dust is very short through the time of high-temperature region.Abundant burning in order to ensure coal dust just requires " eating flour and rice ", higher to the calorific value of coal dust, fugitive constituent and fineness requirement, and ature of coal is slightly poor will cause frequent cutoff and the high coal consumption of low production capacity.Therefore a lot of areas are forced to seek something far and wide when it is within reach, only because coal calorific value and fugitive constituent when real estate are slightly poor, the coal of Qu Mai Shenmu County from afar (emphasizing to use the coal at In A Certain Place of Xinjiang and two places, Shenmu County in the service manual of a lot of coal burners) of having to, has increased considerably production cost.
Because coal dust is through the time of high-temperature region very of short duration (about 0.1 second), for making its fully oxygen supply of just fully burning strengthen combustion intensity, so extreme temperatures (>1500 ℃) in body of heater end, crater place and fire-leading cylinder, the burnt tiny fragments of stone, coal, etc. producing after grey fractional melting in coal dust is sneaked into aggregate can affect product quality, the burnt tiny fragments of stone, coal, etc. contaminated environment again of being scattered on the ground.Add the suddenly cold and hot operating mode of frequent start-stop and the impact of coking scarfing cinder, cause the life-span of fireproof insulation brick very short, therefore maintenance cost is high is also often forced to stop production and delays work.
Control system is very simple, automaticity is very low, and the blow rate required can only remove manual adjustments air door by rule of thumb, and wind and coal can not good synchronization ratio regulate, more can not precise quantification wind/coal ratio.Frequent cutoff when therefore coal powder injection is few, insufficient over-emitting black exhaust that burns again when coal powder injection is many, flame regulates than general <3:1 all, and aggregate temperature can only rely on manual adjustments material loading amount and control, and often surpasses the national standard of ± 9 ℃.
Open mode of operation cause dust and the burnt tiny fragments of stone, coal, etc. seriously polluted, can not ratio regulate the blow rate required cause again tail gas carbon monoxide and discharged nitrous oxides severe overweight, severe contamination dust-removal cloth-bag and cause the accident that cloth bag burns all to have generation.
The defect of above-mentioned traditional coal burner, causes the quality of bituminous concrete to be difficult to be up to state standards, and adds the factor of high coal consumption high pollution, and a lot of key projects do not allow with coal burner, have buried in oblivion the eager desire that a lot of users reduce production costs.
In realizing process of the present invention, inventor find at least to exist in prior art the feature of environmental protection poor, use the defects such as inconvenience and production cost height.
Summary of the invention
The object of the invention is to, for the problems referred to above, propose a kind of numerical control coal dust gasification combustor, to realize the advantage that the feature of environmental protection is good, easy to use and production cost is low.
For achieving the above object, the technical solution used in the present invention is: a kind of numerical control coal dust gasification combustor, comprise the gasification furnace with internal cavities, and at the front end of described gasification furnace, be provided with combustion chamber, the outlet of combustion chamber is crater; At the top of described gasification furnace, be vertically provided with the pulverizer air entrance that the roof through gasification furnace is communicated with gasification furnace internal cavities; Be positioned at a described pulverizer air entrance away from a side of crater, described top of gasification furnace cooperation is provided with air blast, and the air outlet of described air blast coordinates installation with the shell of the furnace wall of gasification furnace.
Further, described gasification furnace, comprises and is positioned at outside gasification furnace shell, is positioned at inner high-temperature heat insulation body, and the first air-supply passage between described gasification furnace shell and high-temperature heat insulation body;
Described combustion chamber, comprise the combustor outer casing being communicated with described gasification furnace shell, the gasification furnace inner casing being connected with the inwall of described high-temperature heat insulation body, and between described combustor outer casing and gasification furnace inner casing and the second air-supply passage being communicated with the first air-supply passage.
Further, in described second channel, be provided with the tertiary air ring being arranged between the end of high-temperature heat insulation body and the end of gasification furnace inner casing, and crater and be arranged on the end of combustor outer casing and the end of gasification furnace inner casing between five vanes.
Further, in described second channel, be also provided with between tertiary air ring and five vanes, near gasification furnace inner casing and four vanes of catalytic combustion chamber enclosure not.
Further, described high-temperature heat insulation body is positioned at the part of described gasification furnace bottom, has inverted V-shaped secondary water smoke air-supply entrance.
Further, on the furnace wall of a described gasification furnace side relative to air outlet, be provided with the temperature thermocouple through described gasification furnace shell and high-temperature heat insulation body.
The numerical control coal dust gasification combustor of various embodiments of the present invention, owing to comprising the gasification furnace with internal cavities, is provided with combustion chamber at the front end of gasification furnace, and the outlet of combustion chamber is crater; At the top of gasification furnace, be vertically provided with the pulverizer air entrance that the roof through gasification furnace is communicated with gasification furnace internal cavities; Be positioned at pulverizer air entrance away from a side of crater, top of gasification furnace coordinates and is provided with air blast, and the air outlet of air blast coordinates installation with the shell of the furnace wall of gasification furnace; Can adopt the flyback combustion system that dusts, make coal dust at least extend 4 times in the time of staying of high-temperature region, can get on the spot coal and reduce production costs; Thereby can overcome in prior art the feature of environmental protection poor, use inconvenience and the high defect of production cost, to realize the advantage that the feature of environmental protection is good, easy to use and production cost is low.
Other features and advantages of the present invention will be set forth in the following description, and, partly from description, become apparent, or understand by implementing the present invention.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for description, for explaining the present invention, is not construed as limiting the invention together with embodiments of the present invention.In the accompanying drawings:
The structural representation of the conventional gas producer of Fig. 1;
Fig. 2 is the operation principle schematic diagram of numerical control coal dust gasification combustor of the present invention.
By reference to the accompanying drawings 1, in embodiment, Reference numeral is as follows:
1-fuel inlet; 2-charging apparatus; 3-poke hole; 4-shaft; 5-gas export control; 6-gas exit; 7-fire grate; 8-grey-way; 9-ash-pan; 10-blower fan.
By reference to the accompanying drawings 2, in the embodiment of the present invention, Reference numeral is as follows:
Pulverizer air of 1-; 2-intermediate water nebelwind; 3-tertiary air ring; Tetra-vanes of 4-; Five vanes of 5-; 6-air blast; 7-crater; 8-high-temperature heat insulation body; 9-temperature thermocouple; 10-gasification furnace shell.
The specific embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein, only for description and interpretation the present invention, is not intended to limit the present invention.
In order to overcome the various disadvantages of conventional gas generator and traditional coal burner, Beijing Digi Burner Technology Co.,Ltd has researched and developed ZZR-MF numerical control coal dust gasification combustor, this ZZR-MF numerical control coal dust gasification combustor has thoroughly been overturned burning theory and the control principle of conventional gas generator and traditional coal burner, the function that integrates novel gas generator and numerical control combustor, properties of product have produced the huge leap forward of the extraordinary imagination.
In order to overcome the start and stop at any time of conventional gas generator and the too little disadvantage of power regulating range, this ZZR-MF numerical control coal dust gasification combustor changes burning lump coal into firing coal dust.In order to overcome the various disadvantages of traditional coal burner, this ZZR-MF numerical control coal dust gasification combustor has adopted and the antipodal flyback of the conventional pulverized-coal burner combustion system that dusts, make coal dust at least extend 4 times in the time of staying of high-temperature region, can " eat coarse food grain " comparatively speaking and reduce the requirement to the calorific value of coal dust and fugitive constituent, therefore can get on the spot coal and reduce production costs.
According to the embodiment of the present invention, as shown in Figure 2, provide a kind of numerical control coal dust gasification combustor.The numerical control coal dust gasification combustor of the present embodiment, comprises the gasification furnace with internal cavities, at the front end of gasification furnace, is provided with combustion chamber, and the outlet of combustion chamber is crater (as crater 7); At the top of gasification furnace, be vertically provided with a pulverizer air (as a pulverizer air 1) entrance that the roof through gasification furnace is communicated with gasification furnace internal cavities; Be positioned at pulverizer air entrance away from a side of crater, top of gasification furnace coordinates and is provided with air blast (as air blast 6), and the air outlet of air blast coordinates installation with the shell of the furnace wall of gasification furnace.On the furnace wall of a gasification furnace side relative to air outlet, be provided with the temperature thermocouple (as temperature thermocouple 9) through gasification furnace shell and high-temperature heat insulation body.
Above-mentioned gasification furnace, comprises and is positioned at outside gasification furnace shell (as gasification furnace shell 10), is positioned at inner high-temperature heat insulation body (as high-temperature heat insulation body 8), and the first air-supply passage between gasification furnace shell and high-temperature heat insulation body; Combustion chamber, comprises the combustor outer casing being communicated with gasification furnace shell, the gasification furnace inner casing being connected with the inwall of high-temperature heat insulation body, and between combustor outer casing and gasification furnace inner casing and the second air-supply passage being communicated with the first air-supply passage.High-temperature heat insulation body is positioned at the part of gasification furnace bottom, has inverted V-shaped secondary water smoke air-supply (as intermediate water nebelwind 2) entrance.
In above-mentioned second channel, be provided with the tertiary air ring (as tertiary air ring 3) being arranged between the end of high-temperature heat insulation body and the end of gasification furnace inner casing, and crater and be arranged on the end of combustor outer casing and the end of gasification furnace inner casing between five vanes (as five vanes 5).In second channel, be also provided with between tertiary air ring and five vanes, near gasification furnace inner casing and four vanes of catalytic combustion chamber enclosure (as four vanes 4) not.
The numerical control coal dust gasification combustor of above-described embodiment, by reducing the blow rate required, makes in stove in oxygen debt fired state; And accelerate the redox reaction of coal dust by water spray in stove; In stove, scorching hot carbon granules has seized the oxygen in water, and isolated hydrogen and carbon monoxide have formed water-gas.Just right result is: a large amount of water-gas is injected into the final after-flame of cylinder (kiln or boiler) with a small amount of unburnt small carbon granules together with flame.Because temperature in stove is controlled at below coal dust ash fusing point (1000 ℃ of left and right), effectively prevented the generation of the burnt tiny fragments of stone, coal, etc. and nitrogen oxide, and extended service life of furnace insulation material, not only improved product quality but also reduced the trouble of conventional pulverized-coal stove scarfing cinder, also reduced disposal of pollutants, be to achieve many things at one stroke simultaneously.
Because coal dust has very high specific area, can complete in a short period of time redox reaction, therefore there is a burner hearth that is equivalent to conventional gas generator volume 1/10 just can meet Production requirement.Due to water-gas direct after-flame after spirt cylinder from stove, thereby do not have the heat loss of pipeline, storage tank to improve the thermal efficiency.In addition: the burning of coal dust among closed environment, has not had gas generator and the pollution of traditional coal burner to environment, air all the time, there is no high temperature to the scaling loss of fireproof insulation brick and coking scarfing cinder problem yet.In addition, igniting is front through not having damp in the air blast purging system in 20 seconds, igniting after coal dust in furnace high-temperature environment all the time in fired state, redox reaction just directly sprays into cylinder burning after generating water-gas, does not therefore have the trouble and worry of blast and poisoning.
The numerical control coal dust gasification combustor of above-described embodiment, adopts liquefied gas igniting (both can light about 30 seconds), and not only convenient and swift cost is very low, and can light a fire at any time, This vehicle stops frequently.This ZZR-MF numerical control coal dust gasification combustor does not have the fireproof insulation brick of traditional gas generator and coal burner, but adopts the high-tech flame-proof thermal insulation material of not fearing suddenly cold and hot, so long service life, operating cost and fault rate are all very low.
The numerical control coal dust gasification combustor of above-described embodiment, numerical control system make complete machine there is the high automation level of " fool's combustor ", the various parameters of color touch screen system picture lifelike image are all come clearly into view, the various important parameters of coordinate picture all show with coordinate form, can manifest the various parameters of random time above.One to turn on shutdown operation simple, safe and reliable, and good wind/coal can reach 1% than controlling precise quantification.In flame regulates than the wide in range interval for 10:1, little fiery smooth combustion, big fire are upright and outspoken bright, and up to ± 1 ℃, in stove, temperature control precision is ± 1% to aggregate temperature control accuracy.
The numerical control coal dust gasification combustor of above-described embodiment; control system also there is the protection of perfect safety interlocking and fault self-diagnosis function; also can acousto-optic and word fault alarm information while breaking down; failure cause and solution are very clear, help operator to fix a breakdown and resume operation as early as possible.The inner black box that also has a similar aircraft of background control system, in some months, the operating various data of this machine can be consulted at any time before.
In sum, the numerical control coal dust gasification combustor of the various embodiments described above of the present invention, be exactly in essence a that gas generator and burner for pulverized coal are combined into one, energy-conserving and environment-protective and fault rate very low, there is the very high-end numerical control coal dust gasification burning all-in-one of high performance-price ratio; It has overcome the very complicated and very little defect of load regulation range of conventional gas generator igniting blowing out, takes up an area and equipment cost is all significantly compressed; He changes the simple extensive filthy image of traditional coal burner simultaneously, wind/coal is that the more than 3 times of traditional coal burner, temperature automatically controlled precision can reach 1% and be much better than national standard, fault rate and maintenance cost well below traditional coal burner than precise quantification to 1%, flame adjustable range, and its excellent properties is far beyond the imagination of people to traditional coal burner.
Viewed and emulated the industry leader of this numerical control coal dust gasification combustor operation and in the industry authoritative expert and combustor user all think: this numerical control coal dust gasification combustor be embodiment compatriots at the masterpiece of world's numerical control combustion field high-tech level, there is the advanced international standard of contemporary coal-dust combustion device.
Finally it should be noted that: the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although the present invention is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims (6)

1. a numerical control coal dust gasification combustor, is characterized in that, comprises the gasification furnace with internal cavities, at the front end of described gasification furnace, is provided with combustion chamber, and the outlet of combustion chamber is crater; At the top of described gasification furnace, be vertically provided with the pulverizer air entrance that the roof through gasification furnace is communicated with gasification furnace internal cavities; Be positioned at a described pulverizer air entrance away from a side of crater, described top of gasification furnace cooperation is provided with air blast, and the air outlet of described air blast coordinates installation with the shell of the furnace wall of gasification furnace.
2. numerical control coal dust gasification combustor according to claim 1, it is characterized in that described gasification furnace comprises and is positioned at outside gasification furnace shell, be positioned at inner high-temperature heat insulation body, and the first air-supply passage between described gasification furnace shell and high-temperature heat insulation body;
Described combustion chamber, comprise the combustor outer casing being communicated with described gasification furnace shell, the gasification furnace inner casing being connected with the inwall of described high-temperature heat insulation body, and between described combustor outer casing and gasification furnace inner casing and the second air-supply passage being communicated with the first air-supply passage.
3. numerical control coal dust gasification combustor according to claim 2, it is characterized in that, in described second channel, be provided with the tertiary air ring being arranged between the end of high-temperature heat insulation body and the end of gasification furnace inner casing, and crater and be arranged on the end of combustor outer casing and the end of gasification furnace inner casing between five vanes.
4. numerical control coal dust gasification combustor according to claim 3, is characterized in that, in described second channel, is also provided with between tertiary air ring and five vanes, near gasification furnace inner casing and four vanes of catalytic combustion chamber enclosure not.
5. according to the numerical control coal dust gasification combustor described in any one in claim 2-4, it is characterized in that, described high-temperature heat insulation body is positioned at the part of described gasification furnace bottom, has inverted V-shaped secondary water smoke air-supply entrance.
6. according to the numerical control coal dust gasification combustor described in any one in claim 2-4, it is characterized in that, on the furnace wall of a described gasification furnace side relative to air outlet, be provided with the temperature thermocouple through described gasification furnace shell and high-temperature heat insulation body.
CN201310676556.8A 2013-12-13 2013-12-13 Numerical control pulverized coal gasification burner CN103672868A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11270810A (en) * 1998-03-25 1999-10-05 Railway Technical Res Inst Gas burner for rail gas pressure welding
CN2589830Y (en) * 2002-12-25 2003-12-03 李延新 Automatic control combustion machine
CN202350087U (en) * 2011-12-02 2012-07-25 浙江永源机电制造有限公司 Combustion system
CN102777894A (en) * 2012-05-28 2012-11-14 李延新 Reverse powder injection combustor
CN103205277A (en) * 2013-01-30 2013-07-17 吴江市新金城不锈钢制品有限公司 Minisize gas producer
CN203744237U (en) * 2013-12-13 2014-07-30 李延新 Numerical control pulverized coal gasification combustion machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11270810A (en) * 1998-03-25 1999-10-05 Railway Technical Res Inst Gas burner for rail gas pressure welding
CN2589830Y (en) * 2002-12-25 2003-12-03 李延新 Automatic control combustion machine
CN202350087U (en) * 2011-12-02 2012-07-25 浙江永源机电制造有限公司 Combustion system
CN102777894A (en) * 2012-05-28 2012-11-14 李延新 Reverse powder injection combustor
CN103205277A (en) * 2013-01-30 2013-07-17 吴江市新金城不锈钢制品有限公司 Minisize gas producer
CN203744237U (en) * 2013-12-13 2014-07-30 李延新 Numerical control pulverized coal gasification combustion machine

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Application publication date: 20140326