CN206439814U - A kind of super low NO - Google Patents

A kind of super low NO Download PDF

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Publication number
CN206439814U
CN206439814U CN201621118777.9U CN201621118777U CN206439814U CN 206439814 U CN206439814 U CN 206439814U CN 201621118777 U CN201621118777 U CN 201621118777U CN 206439814 U CN206439814 U CN 206439814U
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gas
combustion
burner
air
pipeline
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CN201621118777.9U
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王立臣
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王立臣
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Abstract

The utility model discloses a kind of super low NO, provided with fuel gas pipeline, combustion-supporting air pipe line, backflow flue gas pipeline, igniting branch road, burner body, the fuel gas pipeline, combustion-supporting air pipe line, backflow flue gas pipeline;Burner body and the fuel gas pipeline, combustion air pipeline connection, the igniting branch road and fuel gas pipeline and combustion air pipeline connection, it is characterized in that:The fuel gas pipeline is provided with two fuel gas inlets:Fuel gas inlet one and fuel gas inlet two, the combustion gas entered from fuel gas inlet one are passed directly into the port of burner, and the combustion gas entered from fuel gas inlet two is passed through the backflow flue gas pipeline, and the gaseous mixture for forming the low heat value that combustion gas is mixed with backflow flue gas is passed through port;The three kinds of gases of gaseous mixture for being passed through combustion gas, combustion air, backflow flue gas and the combustion gas of burner combustion mouthful erupt burning in the port of burner.The utility model is applied to the operation of various gas furnaces, and the generation of thermal NO is controlled from source, the thermal efficiency of gas furnace and the effect of energy-conserving and environment-protective is substantially increased.

Description

A kind of super low NO
Technical field
The utility model is related to a kind of technical field of gas burner, a kind of extremely low burning skill of generation nitrogen oxides Art, specifically a kind of super low NO and its combustion method.It is mainly used in steam boiler, hot-water boiler, Industrial Stoves etc. Using combustion gas as the combustion system of fuel.
Background technology
Burner using combustion gas as fuel is the visual plant of steam boiler, hot-water boiler, Industrial Stoves, and it ensures combustion gas Stable ignition burning, and produce the processes such as burning waste gas.Whether its design is reasonable, and whether operating method is proper, will be direct Affect whether combustion gas burns completely, if as far as possible few pollution waste gas is produced, so as to be directly related to the energy-conservation of production process And environment protecting.And the nitrous oxides exhaust gas that burner is produced in burning running, it is the main of gas burner generation Waste gas, it has large effect to atmospheric environment.At present, the reduction of conventional low NO produces the method master of nitrogen oxides If by increasing the method that combustion-supporting wind flow, backflow flue gas are recycled into combustion air, to dilute oxygen in combustion air Ratio, reduce ignition temperature, so as to reduce the generation of nitrogen oxides.Although such a method reduces nitrogen oxygen to a certain extent The generation of compound, but because combustion-supporting air temperature is lower, can particularly cannot get fully in winter, plus substantial amounts of low temperature combustion air Burning, unburned combustion air can take away the heat of burner hearth, cause hot loss of energy, reduce efficiency of combustion.Accordingly, it would be desirable to The technical scheme of improved gas burner is proposed, the burning effect of combustion gas while extremely low nitrogen oxides is produced, can be improved Rate, obtains the effect of more preferable energy-conserving and environment-protective.
Utility model content
In order to solve the above-mentioned technical problem the utility model, proposes a kind of super low NO and its combustion method, this reality New burner structure is used with new, backflow flue gas is backed into burner through air-introduced machine, first with combustion gas mixing, dilution Combustion gas, makes combustion gas uniformly reduce calorific value, then makes the low heat value gaseous mixture after backflow flue gas and combustion gas mixing, with combustion gas and combustion-supporting sky Gas mixing after-combustion, so as to reduce the temperature of flame combustion, fundamentally reduces the formation of nitrogen oxides.Furthermore, it is possible to reduce The mixed volume of combustion air, reduces the thermal loss that cold air is caused, and realizes ultralow nitrogen oxides, and efficiently burning effect Really, more energy-conserving and environment-protective.
The purpose of this utility model is achieved through the following technical solutions:
A kind of super low NO, provided with fuel gas pipeline, combustion-supporting air pipe line, backflow flue gas pipeline, igniting branch road, burner Body, the fuel gas pipeline, combustion-supporting air pipe line, backflow flue gas pipeline, igniting pipeline are provided with valve, and combustion-supporting air pipe line is provided with Air blower, backflow flue gas pipeline is provided with air-introduced machine;The port of the burner body is arranged in burner hearth, burner body With the fuel gas pipeline, combustion air pipeline connection, the igniting branch road and fuel gas pipeline and combustion air pipeline connection, its feature It is:The fuel gas pipeline is provided with two fuel gas inlets:Fuel gas inlet one and fuel gas inlet two, the combustion gas entered from fuel gas inlet one Be passed directly into the port of burner, the combustion gas entered from fuel gas inlet two is passed through the backflow flue gas pipeline, formed combustion gas with The gaseous mixture of the low heat value of backflow flue gas mixing is passed through port;It is passed through the combustion gas of burner combustion mouthful, combustion air, backflow flue gas Erupt and burn in the port of burner with three kinds of gases of gaseous mixture of combustion gas.
The utility model is further improved and the additional project of implementation is:
Be provided with burning torch in the burner body, its outer end is that one end remote from port is provided with igniter, and with institute Igniting branch road connection is stated, its inner end is the port that burner body is led in one end near from port.
The periphery of the burner body is provided with institute provided with a master collet for extending to port, the outer wall of the master collet State fuel gas inlet one, in master collet, burner body periphery be provided with several evenly distributed combustion gas branch pipes, the combustion gas branch pipe Outer end is connected with the fuel gas inlet one, and the port is led in its inner end.
Close to the connectivity part being connected with master collet on the backflow flue gas pipeline, periphery is provided with a flue gas sleeve, the cigarette The outer wall of air-casing cylinder is provided with the fuel gas inlet two of the fuel gas pipeline, provided with number on the tube wall of flue gas pipeline in the flue gas sleeve Individual evenly distributed open-work, combustion gas is passed through flue gas sleeve from the fuel gas inlet two, and through in the open-work and flue gas pipeline Backflow flue gas be mixed into the gaseous mixture of combustion gas and flue gas, be passed through in master collet;The combustion-supporting air pipe line passes through in burner sheet The air inlet that body is set at outer end is passed through burner body.
The small firelock of tubulose, the small fire branch road and the Gas Pipe of the outer end connection of the small firelock are additionally provided with burner body Road is connected, and its inner end extends to port, and spinning disk is provided with close to the inner end periphery of port at it.
Valve on the fuel gas pipeline is total hand-operated valve and total magnetic valve on main pipe rail, is also arranged on the combustion gas Combustion gas hand-operated valve one and gas electromagnetic valve one in import one, the combustion gas hand-operated valve two being arranged in fuel gas inlet two and combustion gas electricity Be additionally provided with magnet valve two, main pipe rail pressure transmitter, control combustion gas and the air-fuel ratio valve of combustion air ratio, gas filter, Voltage-stablizer, the device that gives out of gas, spark arrester;The igniting branch road is provided with igniting hand-operated valve and igniter solenoid valve, small fire branch road Provided with small fire hand-operated valve and small fire magnetic valve;Air blower on the combustion-supporting air pipe line is provided with air blast frequency converter, backflow flue gas pipe Air-introduced machine on road is provided with air inducing frequency converter;It is further provided with PLC, guidance panel and control air blower and air-introduced machine Air blower control cabinet, the PLC and the gas electromagnetic valve one on fuel gas pipeline, gas electromagnetic valve two, pressure inverting Device, igniter solenoid valve, small fire magnetic valve, air blast frequency converter, air inducing frequency converter, air blower control cabinet are controlled connection, and with institute The connection that the pressure transmitter on fuel gas pipeline obtain pressure data is stated, the guidance panel is grasped with PLC Make control connection;
In the outer end of burner body provided with the ion flame detector and the detection main fire of port for detecting small firelock flame The ultraviolet Fike detector of flame, the exhanst gas outlet being discharged into burner hearth air is provided with nitrogen oxides detector, is additionally provided with combustion gas Leakage detector, the ion flame detector, ultraviolet Fike detector, nitrogen oxides detector and gas leakage detector with PLC carries out obtaining detection data cube computation;It is further provided with the purging that burner hearth is purged with combustion air of PLC control When pipeline and loss of ignition, operation in it is main fire or small fire extinguishing when, gas pressure force value be below or above setting value when, gas leakage When by PLC automatic start audio communication alarm;It is additionally provided with the sight burner that operating personnel see fire;
The technical principle of super low NO of the present utility model is:Influence the factor of nitrogen oxide NOx growing amount main It is flame temperature, general flame temperature is higher, NOx generation is more, and vice versa.Super low NO of the present utility model is adopted Smoke backflow mode is used, by gas mixing into backflow flue gas, so that change the calorific value of combustion gas, and in rational scope, calorific value Lower, ignition temperature is lower, and the amount that nitrogen oxides is produced is also lower.Meanwhile, the blending of backflow flue gas also reduces combustion-supporting The soakage of wind, it is possible to reduce the heat losses that Cryogenic air is caused, plays the effect of energy-conservation, is become apparent in winter effect. By substantial amounts of experiment for a long time, we have drawn smoke backflow amount/heating value of natural gas and the corresponding relation of ignition temperature, to referring to Lead and more reasonably use gas mixing backflow flue gas after-combustion, the process of the nitrogen oxides in reduction discharge waste gas has important Valency plant.
By controlling smoke backflow amount so as to control combustion flame temperature between 1000 DEG C -1200 DEG C, at such a temperature Combustion of natural gas only produces micro NOx, and concentration of emission can be down to below 30 milligrams/cubic metre.Other smoke backflow causes pair Heat exchange amount increase is flowed, the reduction of Radiant exothermicity caused by temperature reduction is compensate for, boiler thermal output keeps being basically unchanged.
The beneficial effects of the utility model:
1st, by realizing the reasonable uniform mixing of combustion gas and backflow flue gas, the control of fuel gases calorific value is realized, stove is rationally reduced The temperature of thorax flame, the generation of thermal NO is controlled from source, the thermal efficiency and energy-conservation of gas furnace is substantially increased Environmental advantages;
2nd, the reasonable in design of burner of the present utility model, easy to operate, particularly automatically controls degree height, significantly Reduce operating cost and labor intensity.
3rd, operation of the present utility model is full intellectualized, there is provided detection function, the control function of complete indices And warning function, operating safety factor is very high, can fully ensure the safety of production run.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present utility model;
Fig. 2 is the contour structures schematic diagram of burner of the present utility model.
Embodiment
The utility model is illustrated with reference to the accompanying drawings and examples:Embodiment 1:
A kind of super low NO, provided with fuel gas pipeline 1, combustion-supporting air pipe line 21, backflow flue gas pipeline 23, igniting branch road 20th, burner body 14, the fuel gas pipeline, combustion-supporting air pipe line, backflow flue gas pipeline, igniting pipeline are provided with valve, combustion-supporting Air pipe line is provided with air blower 22, and backflow flue gas pipeline is provided with air-introduced machine 24;The port of the burner body is arranged on In burner hearth 13, burner body and the fuel gas pipeline, combustion air pipeline connection, the igniting branch road and fuel gas pipeline and combustion-supporting Air pipe line is connected, it is characterized in that:The fuel gas pipeline is provided with two fuel gas inlets:Fuel gas inlet one and fuel gas inlet two, from combustion The combustion gas that gas entrance one enters is passed directly into the port of burner, and the combustion gas entered from fuel gas inlet two is passed through the backflow cigarette Air pipe, the gaseous mixture for forming the low heat value that combustion gas is mixed with backflow flue gas is passed through port;It is passed through the combustion of burner combustion mouthful Gas, combustion air, three kinds of gases of backflow flue gas and the gaseous mixture of combustion gas erupt burning in the port of burner.
It is provided with burning torch 34 in the burner body, its outer end is that one end remote from port is provided with igniter, and with The igniting branch road connection, its inner end is the port that burner body is led in one end near from port.
The periphery of the burner body is provided with provided with a master collet 32 for extending to port, the outer wall of the master collet The fuel gas inlet 1, in master collet, burner body periphery is provided with 12 evenly distributed combustion gas branch pipes 38, the combustion gas The outer end of branch pipe is connected with the fuel gas inlet one, and the port is led in its inner end.
Close to the position for the connectivity part 350mm being connected with master collet on the backflow flue gas pipeline, periphery is provided with a cigarette Air-casing cylinder 15, the outer wall of the flue gas sleeve is provided with the fuel gas inlet 2 31 of the fuel gas pipeline, the fume pipe in the flue gas sleeve The tube wall on road is passed through flue gas sleeve provided with 16 evenly distributed open-works, combustion gas from the fuel gas inlet two, and through described Open-work is mixed into the gaseous mixture of combustion gas and flue gas with the backflow flue gas in flue gas pipeline, is passed through in master collet;The combustion-supporting airduct Road is passed through burner body by the air inlet 16 set in burner body at outer end.
The small firelock 35 of tubulose, the small fire branch road 19 of the outer end connection of the small firelock and the combustion are additionally provided with burner body Air pipe is connected, and its inner end extends to port, and spinning disk is provided with close to the inner end periphery of port at it.
Valve on the fuel gas pipeline is total hand-operated valve and total magnetic valve 5 on main pipe rail, is also arranged on the combustion Combustion gas hand-operated valve one and gas electromagnetic valve 1 in gas import one, the combustion gas hand-operated valve two being arranged in fuel gas inlet two and combustion Pressure transmitter 7, control combustion gas and air-fuel ratio valve 6, the combustion gas of combustion air ratio are additionally provided with pneumoelectric magnet valve 2 11, main pipe rail Filter 3, voltage-stablizer, 4, the device 8 that gives out of gas, spark arrester 9;The igniting branch road is provided with igniting hand-operated valve and igniter solenoid valve 17, small fire branch road is provided with small fire hand-operated valve and small fire magnetic valve 18;Air blower 22 on the combustion-supporting air pipe line is provided with air blast Air-introduced machine 24 on frequency converter, backflow flue gas pipeline is provided with air inducing frequency converter;Be further provided with PLC, guidance panel and Control the air blower control cabinet of air blower and air-introduced machine, the PLC and the gas electromagnetic valve one on fuel gas pipeline, combustion Pneumoelectric magnet valve two, pressure transmitter, igniter solenoid valve, small fire magnetic valve, air blast frequency converter, air inducing frequency converter, air blower control cabinet It is controlled connection, and with the pressure transmitter on the fuel gas pipeline obtain the connection of pressure data, the operating surface Plate carries out operational control with PLC and is connected;
In the outer end of burner body provided with the ion flame detector and the detection main fire of port for detecting small firelock flame The ultraviolet Fike detector of flame, the exhanst gas outlet being discharged into burner hearth air is provided with nitrogen oxides detector, is additionally provided with combustion gas Leakage detector, the ion flame detector, ultraviolet Fike detector, nitrogen oxides detector and gas leakage detector with PLC carries out obtaining detection data cube computation;It is further provided with the purging that burner hearth is purged with combustion air of PLC control When pipeline and loss of ignition, operation in it is main fire or small fire extinguishing when, gas pressure force value be below or above setting value when, gas leakage When by PLC automatic start audio communication alarm;It is additionally provided with the sight burner that operating personnel see fire.
Above-described embodiment has run 10 production cycles, and rough estimates, each production cycle saves combustion gas 30%, saves electricity 35%, operation operating personnel 60% are saved, average nitrogen oxide emission reduces 60%.
It is noted that on the premise of the basic structure and basic skills of this patent is not changed, the skill of similar change Art scheme should also belong to the protection domain of this patent, and its product should also belong to infringing products.

Claims (7)

1. a kind of super low NO, provided with fuel gas pipeline (1), combustion-supporting air pipe line (21), backflow flue gas pipeline (23), igniting branch Road (20), burner body (14), the fuel gas pipeline, combustion-supporting air pipe line, backflow flue gas pipeline, igniting pipeline are provided with valve Door, combustion-supporting air pipe line is provided with air blower (22), and backflow flue gas pipeline is provided with air-introduced machine (24);The combustion of the burner body Burn mouth to be arranged in burner hearth (13), burner body and the fuel gas pipeline, combustion air pipeline connection, the igniting branch road and combustion Air pipe and combustion air pipeline connection, it is characterized in that:The fuel gas pipeline is provided with two fuel gas inlets:Fuel gas inlet one and combustion gas Entrance two, the combustion gas entered from fuel gas inlet one is passed directly into the port of burner, and the combustion gas entered from fuel gas inlet two is led to Enter the backflow flue gas pipeline, the gaseous mixture for forming the low heat value that combustion gas is mixed with backflow flue gas is passed through port;It is passed through burning The combustion gas of device port, combustion air, three kinds of gases of gaseous mixture of backflow flue gas and combustion gas erupt in the port of burner and burnt.
2. super low NO according to claim 1, it is characterized in that:Burning torch is provided with the burner body (34), its outer end is that one end remote from port is provided with igniter, and is connected with the igniting branch road, and its inner end is i.e. from port The port of burner body is led near one end.
3. super low NO according to claim 1, it is characterized in that:Prolong provided with one the periphery of the burner body The master collet (32) of port is reached, the outer wall of the master collet is provided with the fuel gas inlet one (30), in master collet, burner Body peripheral is provided with several evenly distributed combustion gas branch pipes (38), and the outer end of the combustion gas branch pipe is connected with the fuel gas inlet one, The port is led in its inner end.
4. super low NO according to claim 1, it is characterized in that:Close and master collet on the backflow flue gas pipeline The connectivity part of connection, periphery is provided with a flue gas sleeve (15), and the outer wall of the flue gas sleeve is provided with the combustion gas of the fuel gas pipeline Import two (31), is provided with several evenly distributed open-works in the flue gas sleeve on the tube wall of flue gas pipeline, combustion gas is from the combustion Gas import two is passed through flue gas sleeve, and is mixed into the mixed of combustion gas and flue gas through the open-work and the backflow flue gas in flue gas pipeline Gas is closed, is passed through in master collet;The combustion-supporting air pipe line is led to by the air inlet (16) set in burner body at outer end Enter burner body.
5. super low NO according to claim 1, it is characterized in that:The small firelock of tubulose is additionally provided with burner body (35), the small fire branch road (19) of the outer end connection of the small firelock is connected with the fuel gas pipeline, and its inner end extends to port, It is provided with spinning disk close to the inner end periphery of port.
6. super low NO according to claim 1, it is characterized in that:Valve on the fuel gas pipeline is on main pipe rail Total hand-operated valve and total magnetic valve (5), be also arranged on combustion gas hand-operated valve one and gas electromagnetic valve in the fuel gas inlet one One (10), are arranged on combustion gas hand-operated valve two and gas electromagnetic valve two (11) in fuel gas inlet two, main pipe rail and are additionally provided with pressure Transmitter (7), the air-fuel ratio valve (6) of control combustion gas and combustion air ratio, gas filter (3), voltage-stablizer, (4), combustion gas are put Dissipate device (8), spark arrester (9);The igniting branch road is provided with provided with igniting hand-operated valve and igniter solenoid valve (17), small fire branch road Small fire hand-operated valve and small fire magnetic valve (18);Air blower (22) on the combustion-supporting air pipe line is provided with air blast frequency converter, and flow back cigarette Air-introduced machine (24) on air pipe is provided with air inducing frequency converter;Be further provided with PLC, guidance panel and control air blower and The gas electromagnetic valve one, gas electromagnetic valve two on the air blower control cabinet of air-introduced machine, the PLC and fuel gas pipeline, Pressure transmitter, igniter solenoid valve, small fire magnetic valve, air blast frequency converter, air inducing frequency converter, air blower control cabinet are controlled company Connect, and obtain the connection of pressure data with the pressure transmitter on the fuel gas pipeline, the guidance panel and PLC are controlled Device carries out operational control connection.
7. super low NO according to claim 6, it is characterized in that:In the outer end of burner body provided with detection small fire The ion flame detector of rifle flame and the ultraviolet Fike detector of the detection main flame of port, are discharged into air in burner hearth Exhanst gas outlet is provided with nitrogen oxides detector, is additionally provided with gas leakage detector, the ion flame detector, ultraviolet fire detection Device, nitrogen oxides detector and gas leakage detector carry out obtaining detection data cube computation with PLC;It is further provided with PLC control with combustion air purge burner hearth scavenging pipeline and loss of ignition when, operation in it is main fire or small fire extinguish when, Gas pressure force value be below or above setting value when, gas leakage when by PLC automatic start audio communication alarm;It is additionally provided with Operating personnel see the sight burner of fire.
CN201621118777.9U 2016-10-13 2016-10-13 A kind of super low NO Active CN206439814U (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106322368A (en) * 2016-10-13 2017-01-11 王立臣 Ultra-low nitrogen combustor and combustion method thereof
CN110186186A (en) * 2019-04-24 2019-08-30 大庆百世环保科技开发有限公司 It is a kind of can multifuel combustion on-condensible gas hot wind furnace technology

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106322368A (en) * 2016-10-13 2017-01-11 王立臣 Ultra-low nitrogen combustor and combustion method thereof
CN110186186A (en) * 2019-04-24 2019-08-30 大庆百世环保科技开发有限公司 It is a kind of can multifuel combustion on-condensible gas hot wind furnace technology

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