CN209263037U - A kind of low NOx waste incineration burner of dustproof plug - Google Patents

Abstract

The utility model discloses a kind of low NOx waste incineration burners of dustproof plug, comprising: burner body, built-in air duct, the air duct is open at one end, and for entering the wind, the other end installs adjustable rotary flow and the throughput for entering the air duct is adjusted；Dust-proof sealing plate is hinged on the air duct；The throughput of the combustion-supporting gas into burner body is adjusted for being passed through installation adjustable ventilation door blade at the air port of combustion air in the burner body；Direct current aerofoil, ring, which is set, to be fastened between the air duct outer wall and the burner body inner wall；The utility model is simple and compact for structure, not only can be anti-blocking, can also reduce the content of nitrogen oxides in combustion product.

Description

A kind of low NOx waste incineration burner of dustproof plug

Technical field

The present invention relates to a kind of waste incineration burners, and in particular to a kind of low NOx waste incinerator burning of dustproof plug Device.

Background technique

Any product finally will all become waste after using and consuming, can appropriation of land, Polluted Soil without processing Earth, polluted-water, pollution atmosphere, influence environmental sanitation etc..Country is " three change " principle to the core concept of solid waste management: Innoxious, minimizing, recycling.Main technical measures are at sanitary landfill method, incineration method, biological treatment and comprehensive resource Reason.Wherein innoxious waste, minimizing and the processing technique to recover energy can be achieved at the same time in incineration method, that is, can be achieved at the same time " three Change " principle.Waste incineration is the mode that processing rubbish is most suitably used in the world.

Current incineration technology both domestic and external has mechanical grate-type, module type, rotary kiln formula, garbage derivatived fuel formula, fluidisation Bed, wherein the use of be at most also main technique being stoker fired grate and fluidized bed, foreign countries have passed through the development in more than 100 years, burn Mature and reliable, the country also developed for more than 30 years burning technology, and technology is continuous perfect, and main target is to burn atmosphere dirt Dye discharge will control in the limit value of standard requirements.

The burning of rubbish is an extremely complex process, if combustion conditions control is bad, incineration of waste process can be generated The substances such as a large amount of sour gas, soot, CO, imperfect combustion organic component, dust, lime-ash, in some instances it may even be possible to generate toxic Gas, including dioxin, polycyclic hydrocarbon (PAH) and aldehydes etc., therefore, rubbish most important to the control of waste incineration If burning be made of dry systems, wherein core the most is exactly incineration system, that is, the most important control burnt is exactly to burn Burn the control of furnace temperature.

By taking grate furnace as an example, burning process of the rubbish on fire grate is broadly divided into three phases: dryer section, burning zone, After-flame section.Rule of thumb, the combustible in rubbish and poisonous and harmful substance are decomposed completely at high temperature, until needed for being destroyed Reasonable temperature to be achieved is generally between 800~1000 DEG C, and when normal operation, furnace temperature maintains 850~950 DEG C, rubbish into Enter and contacted in furnace with high-temperature gas, is rapidly heated, experience is dry, kindling, burns, after-flame.Under normal circumstances, it burns the heat of sending Amount can maintain furnace temperature, when rubbish calorific value is relatively low, need to spray into fuel oil or combustion gas as auxiliary fuel, waste incinerator is combustion-supporting The effect of system is that igniting blow-on and supplies incinerate, and capital equipment is burner, is reflected at present according to the case where operation Burner for waste incinerator mainly has the following aspects there are some disadvantages:

(1) burner dust deposition problem, this is that the property of waste incineration determines, the various materials that burning process generates And complicated ingredient not can avoid, therefore reduction dust deposition becomes such burner emphasis and to solve the problems, such as；

(2) spray gun blockage problem, it is severe due to burning furnace inner environment, when burner is out of service, oil gun or air gun spray Mouth is easily blocked, and clears up also extremely difficult；

(3) when burner is stopped transport, guarantee the problem of small air quantity of combustion air is persistently supplied, small air quantity need to guarantee firing when running The wind speed of burner spout, prevents high temperature gases recirculating；

(4) the degree of automation problem, some burners are using misfiring or integrally exiting when combustion-supporting, and this requires artificial hands Dynamic frequent operation, increases the risk of labor intensity and personal safety.

Summary of the invention

It is an object of the invention to solve at least the above problems.

In order to realize these purposes and other advantages according to the present invention, a kind of low nitrogen waste incinerator of dustproof plug is provided Burner, comprising:

Burner body, in it is hollow, and it is built-in for being passed through the air duct of combustion air, the air duct is open at one end, for into Wind, the other end install adjustable rotary flow and the throughput for entering the air duct are adjusted；Dust-proof sealing plate is hinged on the wind Road, when burner is stopped transport, dust-proof sealing plate turns under the effect of gravity closes the open end in the air duct；

Stabilizer is built in the air duct, when burner starting, stabilizer pushing tow under the promotion of external oil gun The dust-proof sealing plate, so that the open end in the air duct is opened, so that gas circulates；

The control to the throughput for entering the combustion-supporting gas in air duct is realized in the adjustable rotary flow under the adjustment effect of adjustment axis System；

The burner body is adjusted for being passed through installation adjustable ventilation door blade at the air port of combustion air and enters burning The throughput of the intrinsic combustion-supporting gas of device；

Direct current aerofoil, ring, which is set, to be fastened between the air duct outer wall and the burner body inner wall, and is not connect with the two Touching, forms circular passage between direct current aerofoil and air duct outer wall, direct current aerofoil and burner body inner wall, will be each in burner hearth The combustion air connection in direction is got up, and cooling down is played the role of.

More preferably, the low NOx waste incineration burner of the dustproof plug, the external oil gun are made in the promotion of propeller With lower movement, and then dust-proof sealing plate described in pushing tow.

More preferably, the low NOx waste incineration burner of the dustproof plug, the stabilizer are eddy flow stabilizer.

More preferably, the low NOx waste incineration burner of the dustproof plug, the burner body are equipped with flame-observing hole, Combustion case is checked to facilitate operation personnel.

More preferably, the low NOx waste incineration burner of the dustproof plug, the burner body are equipped with spout, with The air duct is coaxial, and in the same direction；

The direct current aerofoil is cut positioned at the junction of the burner body 1 and spout 9.

More preferably, the low NOx waste incineration burner of the dustproof plug,

Further include:

Flame detector, test side are protruded into the burner hearth of the burner body, and whether detect in it has flame.

More preferably, the low NOx waste incineration burner of the dustproof plug, the burner body are equipped with flame-observing hole, Convenient for observing inner case.

More preferably, the low NOx waste incineration burner of the dustproof plug, control of the adjustment axis in angle stroke actuator The lower switch-mode regulation situation for realizing adjustable rotary flow of system, to adjust air quantity；

The angle journey controller adjusts the adjustment axis under the control of central controller, and wherein stroke actuator in angle is defeated 4-20mA signal out.

More preferably, the low NOx waste incineration burner of the dustproof plug, is additionally provided with burning torch, in central controller Control under realize automatic ignition.

More preferably, the low NOx waste incineration burner of the dustproof plug, the burner body ejection end are coaxially connected Spout；The inner wall circumferential direction internal chute of the spout；The outer wall circumferential direction of spout outwardly protrudes the external chute to be formed；

And the nozzle installs remove device comprising: scraper plate, circumferential direction are installed on the spout inner wall, the scraper plate It can be moved along the internal chute circumferential direction, the dust of spout inner wall bonding is struck off；Pull plate, the spout outer wall are circumferential Installation, pull plate move along the external chute circumferential direction under external motor pulling, lead between the pull plate and the scraper plate Cross connecting plate connection.

The present invention is include at least the following beneficial effects:

(1) oil gun spout is closed using the sealing plate of high temperature resistant stainless steel material when stopping transport, prevents flying dust attached to the greatest extent Blocking oil gun and stabilizer；

(2) the small flow combustion air persistently supplied when stopping transport is sprayed by aperture, guarantees certain spout flow velocity, can be to spray Mouth is cooled down, and increases the service life of burner, while flying dust can be blocked in outside spout by the wind of certain flow rate, prevent flying dust And dust sticks together on spout.

(3) burner whole work process is full automatic, before two advantages can guarantee that burner clears up maintenance cycle It lengthens, largely can reduce the human and material resources of garbage burning factory, solve the energy；

(4) being classified adjustable design using air quantity reduces the generation of NOx, and response country, can to the policy of energy-saving and emission-reduction By the control of NOx emission concentration within the scope of standard limited value；

(5) because burner does not have to frequently maintenance replacement, burner can be installed panel and is fully welded with furnace body, reduce activity to the greatest extent Coupling part guarantees that sealing is tight, prevents toxic and harmful gas from leaking；

(6) propeller cylinder moving drives oil gun and eddy flow stabilizer to move axially to inside air duct, adjustable rotary flow and After dust-proof sealing plate is closed, the wind in burner body is without interruption, realizes completely dust-proof anti-blocking.

Further advantage, target and feature of the invention will be partially reflected by the following instructions, and part will also be by this The research and practice of invention and be understood by the person skilled in the art.

Detailed description of the invention

Fig. 1 is structural schematic diagram when burner of the invention is inactive；

Fig. 2 is the section view of burner of the present invention；

Structural schematic diagram when Fig. 3 is burner starting of the invention；

Fig. 4 is the structural schematic diagram in another performance between spout and remove device.

Specific embodiment

Present invention will be described in further detail below with reference to the accompanying drawings, to enable those skilled in the art referring to specification text Word can be implemented accordingly.

As shown in Figure 1-3, the present invention provides a kind of dustproof plug low NOx waste incineration burner, comprising: burner body 5, it is interior hollow, and the built-in air duct 15 for being used to be passed through combustion air, the air duct 15 is open at one end, for entering the wind, other end installation 6 pairs of the adjustable rotary flow throughputs for entering the air duct 15 are adjusted；Dust-proof sealing plate 7 is hinged on the air duct, works as burning When device is stopped transport, dust-proof sealing plate 7 turns under the effect of gravity closes the open end in the air duct 15；Stabilizer 11 is (described steady Burner 11 is eddy flow stabilizer), it is built in the air duct, when burner starting, stabilizer 11 is pushed away external oil gun 1 Dust-proof sealing plate 7 described in dynamic lower pushing tow, so that the open end in the air duct 15 is opened, so that gas circulates；It is described adjustable Spinning disk 6 realizes the control to the throughput for entering the combustion-supporting gas in air duct under the adjustment effect of adjustment axis 4；The burner Ontology 5 is adjusted combustion-supporting into burner body 5 for being passed through installation adjustable ventilation door blade 12 at the air port of combustion air The throughput of gas；

Direct current aerofoil 10, ring, which is set, to be fastened between 5 inner wall of 15 outer wall of air duct and the burner body, and not with two Person's contact, forms circular passage between 15 outer wall of direct current aerofoil 10 and air duct, 5 inner wall of direct current aerofoil 10 and burner body, with The combustion air connection of all directions in burner hearth is got up, cooling down is played the role of.

Flame detector 13, test side are protruded into the burner hearth of the burner body, and whether detect in it has flame.Institute Burner body is stated equipped with flame-observing hole 3, convenient for observation inner case.

The external oil gun 1 moves under the impetus of propeller 2, and then dust-proof sealing plate 7 described in pushing tow.

In another performance, the low NOx waste incineration burner of the dustproof plug, the burner body is equipped with Spout 9, it is coaxial with the air duct 15, and in the same direction；The direct current aerofoil 10 is cut positioned at the burner body 1 and spout 9 Junction.

In another performance, the low NOx waste incineration burner of the dustproof plug, the adjustment axis 4 is in angle row The switch-mode regulation situation that adjustable rotary flow 6 is realized under the control of journey actuator, to adjust air quantity；The angle journey controller exists The adjustment axis 4 is adjusted under the control of central controller, wherein stroke actuator in angle exports 4-20mA signal.

In another performance, the low NOx waste incineration burner of the dustproof plug is additionally provided with burning torch 16, Automatic ignition is realized under the control of central controller.

In another performance, the low NOx waste incineration burner of the dustproof plug, as shown in figure 4, the burning The coaxially connected spout 9 of device main body ejection end；The inner wall circumferential direction internal chute of the spout 9；The outer wall circumferential direction of spout outwardly protrudes shape At external chute；And the nozzle installs remove device comprising: scraper plate 17, circumferential direction are installed on 9 inner wall of spout, institute Stating scraper plate 17 can move along the internal chute circumferential direction, strike off to the dust of 9 inner wall of spout bonding；Pull plate 18, it is described The installation of spout outer wall circumferential direction, pull plate 18 move under external motor pulling along the external chute circumferential direction, the pull plate 18 It is connect between the scraper plate 17 by connecting plate 19.

As shown in Figure 1, arrow direction is the flow direction of combustion air, combustion air is divided into two strands in burner internal, and a part helps It fires wind to enter by the way that adjustable swirl blade 6 is quantitative, then is sprayed by eddy flow stabilizer 11 from spout high-speed rotational and mixed with fuel oil It closes, burner is fuel-rich burning at this time, and the control of excess air coefficient can reduce the generation of NOx, and remaining combustion air passes through Outside is sprayed into through the deflector hole on direct current aerofoil, is mixed with high-temperature flue gas, so that fuel is burnt away until after-flame, two strands of combustion airs Proportion can be adjusted by combustion case, to effectively control ignition temperature, both guaranteed that the temperature of waste incineration is wanted It asks, and can prevent localized hyperthermia from generating NOx, the temperature general control of waste incinerator works as in-furnace temperature at 800~1000 DEG C N when higher than 1500 DEG C, in air₂Reacting at high temperature becomes sharply obvious, increases with temperature, NOx generation amount is by finger Number rule increases sharply, therefore the control for putting into temperature when auxiliary burner temperature is fired is most important.

Propeller 2 drives oil gun 1 or air gun, 16 axial stretching of burning torch mobile by clamping plate, moving distance 300~500 Millimeter, it is configured with locator on propeller 2, can realize the function of automatic control ignition with the open and close position signal of feedback device Energy.Adjustment axis 4 and actuator mounting base 14 are matched with actuator, and adjustment axis 4 is real under the drive of angle stroke actuator Existing adjustable rotary flow is closed or from is closing to opening from reaching, angle stroke actuator output 4~20mA signal, to realize that air quantity can It adjusts.The design of burner combustion air interface has adjustable ventilation door blade 12, and actuator is mounted in actuator mounting base 14, and drive can Air register blade 12 rotates, and also aperture is controlled by 4~20mA signal, to control the combustion air into burner Amount, when burner oil gun 1 stops working, it is especially desirable to combustion air volume is adjusted, small flow is reached, the purpose acted on greatly.

Fig. 1 show state when inactive burner or stoppage in transit, and adjustable rotary flow at this time is closed entirely, dust-proof sealing plate 7 and wind Otic placode on road 15 is fixed by pin shaft, can be rotated in circumferencial direction, and when eddy flow stabilizer 11 exits, dust-proof sealing plate 7 is in gravity Effect is lower to close, and adjustable ventilation door blade 12 opens certain angle, and a small amount of wind enters burner, by adjustable rotary flow 6 and prevents The small gap circulation being covered with dust at 7 sealing of plate is micro, most of to enter burner hearth, direct current aerofoil by the circular passage of direct current aerofoil 10 The design in 10 inside-and-outside ring channels can lead to combustion air along the exposed several surface currents in burner hearth of spout, play cooling and dust-proof Effect.Propeller 2 drives oil gun 1 and burning torch 16 to exit back 400 millimeters respectively.Flame detector 13 detects under the state Without fire, flame-observing hole 3 also can't see flame, and dust-proof sealing plate also acts as the effect for preventing from peeping.

Fig. 2 show burner starting operating status, and propeller 2 drives oil gun 1, burning torch 16 to enter position, eddy flow at this time Stabilizer 11 is promoted with oil gun 1, and eddy flow stabilizer 11 pushes dust-proof sealing plate 7 open, and 6 standard-sized sheet of adjustable rotary flow, burner is just Often starting, igniting, until light a fire successfully, it is stable.Dust-proof sealing plate 7 is made of high temperature resistant stainless steel, and continuous use temperature can Reach 1150 DEG C, is hardly damaged.Rule of thumb, start in the case of cold conditions, ignition combustion system can make incinerator heat up per hour 50 DEG C, stop combustion after incinerator is warming up to 850 DEG C from cold conditions, and furnace exit temperature is kept to stop at least 2S at 850 DEG C or more Burner.Oil gun 1 contribute adjust mainly by pipeline regulating valve carry out, optimal management program by runing adjustment summarize and ?.The fire inspection detection of detector 13 has fire, and flame-observing hole 3 can also see flame.Entire combustion process has full-automatic management burning journey Sequence, fire defector judge automatically and the functions such as prompt failure.Burner can carry out automatic ignition under the control of program controller.Combustion Burner has the function of that automatic ignition, flame failure protection, fault alarm etc. and flame intensity are big, and flameholding, safety is good, power tune The features such as whole big.Burner can automatically adjust air mass flow to change flame size.

Without departing from the general concept defined in the claims and the equivalent scope, the present invention is not limited to specific details With legend shown and described herein.

Claims (10)

1. a kind of low NOx waste incineration burner of dustproof plug characterized by comprising

Burner body, interior hollow and built-in for being passed through the air duct of combustion air, the air duct is open at one end, for entering the wind, separately Adjustable rotary flow is installed, the throughput for entering the air duct is adjusted in one end；Dust-proof sealing plate is hinged on the air duct, when When burner is stopped transport, dust-proof sealing plate turns under the effect of gravity closes the open end in the air duct；

Stabilizer is built in the air duct, and when burner starting, stabilizer is under the promotion of external oil gun described in pushing tow Dust-proof sealing plate, so that the open end in the air duct is opened, so that gas circulates；

The control to the throughput for entering the combustion-supporting gas in air duct is realized in the adjustable rotary flow under the adjustment effect of adjustment axis；

The burner body is adjusted for being passed through installation adjustable ventilation door blade at the air port of combustion air and enters burner sheet The throughput of intracorporal combustion-supporting gas；

Direct current aerofoil, ring, which is set, to be fastened between the air duct outer wall and the burner body inner wall, and is not contacted with the two, directly Circular passage is formed between stream aerofoil and air duct outer wall, direct current aerofoil and burner body inner wall, by all directions in burner hearth Combustion air connection get up, play the role of cooling down.

2. the low NOx waste incineration burner of dustproof plug as described in claim 1, which is characterized in that the external oil gun exists It is moved under the impetus of propeller, and then dust-proof sealing plate described in pushing tow.

3. the low NOx waste incineration burner of dustproof plug as described in claim 1, which is characterized in that the stabilizer is rotation Flow stabilizer.

4. the low NOx waste incineration burner of dustproof plug as described in claim 1, which is characterized in that the burner body It is equipped with flame-observing hole, checks combustion case to facilitate operation personnel.

5. the low NOx waste incineration burner of dustproof plug as described in claim 1, which is characterized in that the burner body It is coaxial with the air duct equipped with spout, and in the same direction；

The direct current aerofoil cuts the junction positioned at the burner body and spout.

6. the low NOx waste incineration burner of dustproof plug as described in claim 1, which is characterized in that further include:

Flame detector, test side are protruded into the burner hearth of the burner body, and whether detect in it has flame.

7. the low NOx waste incineration burner of dustproof plug as described in claim 1, which is characterized in that the burner body It is equipped with flame-observing hole, convenient for observation inner case.

8. the low NOx waste incineration burner of dustproof plug as described in claim 1, which is characterized in that the adjustment axis is at angle The switch-mode regulation situation that adjustable rotary flow is realized under the control of stroke actuator, to adjust air quantity；

The angle journey controller adjusts the adjustment axis under the control of central controller, and wherein stroke actuator in angle exports 4- 20mA signal.

9. the low NOx waste incineration burner of dustproof plug as described in claim 1, which is characterized in that

It is additionally provided with burning torch, realizes automatic ignition under the control of central controller.

10. the low NOx waste incineration burner of dustproof plug as described in claim 1, which is characterized in that

The coaxially connected spout of burner body ejection end；The inner wall circumferential direction internal chute of the spout；The outer wall of spout is circumferential Outwardly protrude the external chute to be formed；

And the nozzle installs remove device comprising:

Scraper plate, circumferential direction are installed on the spout inner wall, and the scraper plate can be moved along the internal chute circumferential direction, viscous to spout inner wall The dust connect is struck off；

Pull plate, the spout outer wall circumferential direction installation, pull plate move under external motor pulling along the external chute circumferential direction, It is connected between the pull plate and the scraper plate by connecting plate.