Background technology
Wide variety of high-new power-saving technology has HTAC and oxygen-enriched combustion technology both at home and abroad at present, wherein
HTAC is that high temperature air is burnt with combustion gas mixing;Oxygen-enriched combustion technology is combustion gas and combustion-supporting gas in oxygen concentration
More than mixed combustion under 21% working condition.But there is shortcoming, simple heat accumulating type high-temperature air burning in both technologies
What technology was pursued is the recovery waste heat to greatest extent from flue gas, is embodied in the preheating temperature for improving combustion-supporting gas as far as possible,
Reduce exhaust gas temperature simultaneously as far as possible, and exist in terms of improving air-breathing characteristic quality and reducing the exhaust smoke level of unit of fuel tight
Weight defect;Simple oxygen-enriched combusting major defect is high fume temperature, NOxConcentration of emission is big, the problems such as gas conduct pipe is easily blocked.
The patent of publication number CN101280916 discloses a kind of thermal storage type oxygen-enriched combusting method, and which is in a heat accumulating type richness
By the one kind in combustion gas and oxygen or natural gas, liquefied gas, coke-stove gas and diesel oil at the oxygen mix shower nozzle of oxygen burner
It is sufficiently mixed, and sprays into the mixed gas conduit for being arranged on regenerator center;The above-mentioned gas being adequately mixed be preheating to
900~1000 DEG C of combustion air mixes at burner tip again, and burns.
The patent also discloses a kind of thermal storage type oxygen-enriched combustion apparatus for realizing said method, and which includes point or so is arranged
Two thermal storage type oxygen-enriched combusting devices, as shown in figure 1, each burner includes regenerator 01, the storage being arranged in regenerator 01
Hot body 02 and positioned in heat storage 02 mixed gas conduit 03, be surrounded by thermal insulation layer 04 around heat storage 02, in regenerator
01 end wall is connected with burner tip 05, is provided with a through hole and mixed gas conduit at the center of burner tip 05
03 pipe end is connected and is provided with multiple through holes being connected with regenerator 01 along its circumferencial direction;Regenerator 01 it is another
Individual end wall is connected with an end wall of air chamber 06,06 side wall Jing of air chamber thereon the pipeline equipped with three-way valve and one its
On be provided with air intake and be connected with the four-way change-over valve of waste gas outlet, another end wall and the oxygen mix shower nozzle of air chamber 06
07 is connected, and oxygen mix shower nozzle 07 is respectively provided with the gas pipeline 09 equipped with valve 08 thereon and valve 010 is housed thereon
Oxygen channel 011 end, oxygen mix shower nozzle 07 is coaxially oppositely arranged with mixed gas conduit 03.
Thermal storage type oxygen-enriched combusting method disclosed in above-mentioned patent adopts fuel and oxygen or natural gas, liquefied gas, coke-oven coal
One kind in gas and diesel oil is sufficiently mixed in advance, is sprayed by the mixed gas conduit for being arranged on regenerator center, and is stored with Jing
Combustion air mixed combustion at the burner tip of hot cell preheating so that in burner hearth at burner tip easy generation office
Portion's high temperature, so as to cause mixed gas conduit scaling loss, shortens its service life.
Utility model content
(1) technical problem to be solved
The technical problems to be solved in the utility model is that the existing thermal storage type oxygen-enriched combustion apparatus of solution are easy inside burner hearth
Produce localized hyperthermia and cause the problem of the easy scaling loss of mixed gas conduit.
(2) technical scheme
In order to solve above-mentioned technical problem, this utility model provides a kind of thermal storage type oxygen-enriched combustion apparatus, including:Stove
Thorax;Located at the burner of burner hearth, burner has two, each burner include regenerator and located at regenerator near one end of burner hearth burning
Mouth shower nozzle, is provided with heat storage and gas conduct pipe in accumulation of heat room, burner nozzle is provided with first through hole and surround the second of first through hole
Through hole, one end of gas conduct pipe are connected with first through hole, and the other end of gas conduct pipe and the first fuel gas supply pipeline and nitrogen are supplied
To pipeline communication, the second through hole is connected with regenerator;And with burner away from the air feed conduit that connects of one end of burner hearth and
Oxygen feeding pipe road.
According to this utility model, regenerator is provided with the oxidant service for communicating therewith away from one end of burner hearth, two
Oxidant service is selectively connected with air feed conduit by a four-way change-over valve, and oxygen feeding pipe road is located at sky
On gas service and communicate therewith, on four-way change-over valve, be also associated with flue.
According to this utility model, be additionally provided with burner hearth and open stove burner, open stove burner be provided with the second fuel gas supply pipeline and
Combustion air service.
According to this utility model, on the second fuel gas supply pipeline and combustion air service, regulating valve is equipped with.
According to this utility model, the first fuel gas supply pipeline, oxidant service, air feed conduit, oxygen supply
Regulating valve is equipped with pipeline and nitrogen service.
According to this utility model, the supply of the first fuel gas supply pipeline, air feed conduit, oxygen feeding pipe road and nitrogen
Stop valve is equipped with pipeline.
(3) beneficial effect
Above-mentioned technical proposal of the present utility model has the advantage that:
(1) thermal storage type oxygen-enriched combustion apparatus of the present utility model, are provided with the nitrogen supply connected with the gas conduct pipe of burner
Pipeline, after the working condition of burner is shifted to smoke evacuation by burning, into the gas conduct pipe of the burner can be passed through nitrogen, which is carried out
Nitrogen is purged, and combustion gas therein is all blown in burner hearth and is burnt, so as to ensure the safety of whole combustion process;
It is when the working condition of burner is to discharge fume, then sustainable to be passed through nitrogen thereto, high-temperature flue gas thus can be prevented to enter smoke evacuation burner
Gas conduct pipe in, and cooling is played a part of to gas conduct pipe, so as to protect gas conduct pipe not receive high-temperature flue gas scaling loss.
(2) thermal storage type oxygen-enriched combustion apparatus of the present utility model, its first fuel gas supply pipeline are connected with gas conduct pipe, empty
Gas service and oxygen feeding pipe road are connected with regenerator by oxidant service, and combustion gas can be caused to be led to by gas conduct pipe
Enter in burner nozzle, air and oxygen are passed through regenerator preheating by oxidant service after being sufficiently mixed, and then exist with combustion gas
Mix at burner nozzle, and in stove chamber inner combustion.Thus can avoid higher local height is being produced at burner inside burner hearth
Temperature, further prevents gas conduct pipe to be burnt, extends its service life.
Specific embodiment
It is to make purpose, technical scheme and the advantage of this utility model embodiment clearer, new below in conjunction with this practicality
Accompanying drawing in type embodiment, is clearly and completely described to the technical scheme in this utility model embodiment, it is clear that retouched
The embodiment stated is a part of embodiment of the present utility model, rather than the embodiment of whole.Based on the reality in this utility model
Apply example, the every other embodiment obtained on the premise of creative work is not made by those of ordinary skill in the art, all
Belong to the scope of this utility model protection.
As shown in Fig. 2 one embodiment of this utility model thermal storage type oxygen-enriched combustion apparatus.Which includes:Burner hearth 1, burner,
First fuel gas supply pipeline, nitrogen service, air feed conduit and oxygen feeding pipe road.Wherein, burner is located at burner hearth 1,
Burner has two, to be respectively arranged on first burner 21 and the second burner 22 at 1 two ends of burner hearth.Each burner includes regenerator and sets
In regenerator near the burner nozzle of one end of burner hearth 1, heat storage and gas conduct pipe in accumulation of heat room, are provided with, burner nozzle is provided with
One through hole and the second through hole around first through hole, one end of gas conduct pipe are connected with first through hole, the other end of gas conduct pipe
Connect with the first fuel gas supply pipeline and nitrogen service, the second through hole is connected with regenerator.Air feed conduit and oxygen
The one end of service with burner away from burner hearth 1 connects.In the present embodiment, in two burners is used as burning burner
When, another is then as smoke evacuation burner.Combustion gas and air and oxygen are burnt into burner hearth 1 by the burner that burns, and the flue gas of generation is then
Can be discharged by smoke evacuation burner, and flue gas, when the regenerator of smoke evacuation burner, its heat is absorbed by the heat storage in regenerator, when
The working condition of the burner is shifted to after burning by smoke evacuation, and the heat that heat storage absorbs then can be used for the oxygen to being passed through in regenerator
Preheated with air.The gas conduct pipe of the present embodiment is made using carbofrax material.
The above-mentioned thermal storage type oxygen-enriched combustion apparatus of the present embodiment, are provided with the nitrogen supply pipe connected with the gas conduct pipe of burner
Road, after the working condition of burner is shifted to smoke evacuation by burning, into the gas conduct pipe of the burner can be passed through nitrogen, carry out nitrogen to which
Air-blowing is swept, and combustion gas therein is all blown in burner hearth and is burnt, so as to ensure the safety of whole combustion process;Burning
It is when the working condition of mouth is to discharge fume, then sustainable to be passed through nitrogen thereto, high-temperature flue gas thus can be prevented to enter smoke evacuation burner
In gas conduct pipe, and cooling is played a part of to gas conduct pipe, so as to protect gas conduct pipe not receive high-temperature flue gas scaling loss.
Further, in this embodiment, regenerator is provided with the oxidant service for communicating therewith away from one end of burner hearth 1,
Two oxidant services are selectively connected with air feed conduit 5 by a four-way change-over valve 8, oxygen feeding pipe road
6 on air feed conduit 5, also, oxygen feeding pipe road 6 is connected with air feed conduit 5, is also connected on four-way change-over valve 8
It is connected to flue 9.I.e.:Be connected on four ports of four-way change-over valve 8 air feed conduit 5, flue 9, and
The oxidant service 4 and 4 ' of oxidant service connected with the second burner 22 of the connection of the first burner 21.When the first burning
When mouth 21 is burning burner, the second burner 22 is smoke evacuation burner, four-way change-over valve 8 causes oxidant service 4 to supply with air
Connect to pipeline 5, do not connect with flue 9, and 4 ' of oxidant service connect with flue 9, and air supply pipe
Road 5 is not connected;After a commutation cycle, the two exchange, you can adjust four-way change-over valve 8 so that oxidant service
4 ' are connected with air feed conduit 5, are not connected with flue 9, and oxidant service 4 connect with flue 9, it is and empty
Gas service 5 is not connected.In the present embodiment, the exit of flue 9 is provided with air-introduced machine.
Thus, in the thermal storage type oxygen-enriched combustion apparatus of the present embodiment, the first fuel gas supply pipeline is connected with gas conduct pipe,
Air feed conduit 5 and oxygen feeding pipe road 5 are connected with regenerator by oxidant service, and combustion gas can be caused to be led by combustion gas
Gutron enters in burner nozzle, and air and oxygen are passed through regenerator preheating by oxidant service after being sufficiently mixed, then with combustion
Gas mixes at burner nozzle, and burns in burner hearth 1.Thus can avoid inside burner hearth 1 produce at the burner it is higher
Localized hyperthermia, further prevents gas conduct pipe to be burnt, extends its service life.
Further, in the present embodiment, it is additionally provided with burner hearth 1 and opens stove burner 10, opens stove burner 10 and be provided with the second combustion gas
Service 11 and combustion air service 12.Stove burner 10 is opened for starting working in the first burner 21 and the second burner 22
Front elder generation is passed through combustion gas and combustion air into burner hearth, and lighting makes which burn in burner hearth 1, makes the temperature in burner hearth be raised to technique
The temperature of setting.In this embodiment, the second fuel gas supply pipeline 11 is provided with regulating valve 131, on combustion air service 12
Regulating valve 132 is provided with, is respectively used to adjust and control the intake of combustion gas and combustion air.The entrance of comburent air duct 12
It is provided with aerator.
Further, in the present embodiment, the first fuel gas supply pipeline, oxidant service, air feed conduit 5, oxygen
Regulating valve is equipped with gas service 6 and nitrogen service, be respectively used to adjust and control combustion gas, oxidant, air,
The intake of oxygen and nitrogen, above-mentioned oxidant are the mixed gas of air and oxygen.
Further, in the present embodiment, the first fuel gas supply pipeline, air feed conduit 5, oxygen feeding pipe road 6 and
Stop valve is equipped with nitrogen service, is respectively used to control the first fuel gas supply pipeline, the confession of air feed conduit 5, oxygen
To the opening and closing of pipeline 6 and nitrogen service.
The above-mentioned thermal storage type oxygen-enriched combustion apparatus of the present embodiment start aerator when in use, first, open combustion air
The regulating valve 131 in regulating valve 132 and the second fuel gas supply pipeline 11 on service 12, to be passed through combustion gas into burner hearth 1
And combustion air, lighted with electronic igniting controllor and open stove burner 10, adjust regulating valve 132 and regulating valve 131, it is combustion-supporting to control
Air and the intake of combustion gas.When the temperature in burner hearth 1 rises to preset temperature (800-900 DEG C), open and the first burner 21
Regulating valve 134 on the oxidant service 4 of connection and the tune on 4 ' of oxidant service that connects with the second burner 22
Section 134 ' of valve, opens air-introduced machine, opens stop valve 145 and regulating valve 135 on air feed conduit 5, to be passed through into burner hearth 1
Air, opens the stop valve 143 and regulating valve 133 on the first fuel gas supply pipeline 3 connected with the first burner 21, with to burner hearth
Combustion gas is passed through in 1, after uniformity of temperature profile, burning completely flame are formed in burner hearth 1, regulating valve 132 is closed and is adjusted
Valve 131.The cut-out 146 being then turned on oxygen feeding pipe road 6 and regulating valve 136, four-way change-over valve 8 are caused and the first burner 21
The oxidant service 4 of connection is connected with air feed conduit 5 and oxygen feeding pipe road 6, is not connected with flue 9, and
4 ' of oxidant service connected with the second burner 22 connected with flue 9, and air feed conduit 5 and oxygen feeding pipe
Road 6 is not connected, and now the first burner 21 is burning burner, and the second burner 22 is smoke evacuation burner.Combustion gas is by the first gas supply pipe
Road 3 is passed through in the gas conduct pipe of the first burner 21;The first burner 21 is passed through by oxidant service 4 after air and oxygen mix
Accumulation of heat room in, and be preheated to 900-1600 DEG C.The mixed gas of combustion gas and the air and oxygen being preheated are in burner nozzle
Place's mixing, and burn in burner hearth 1, the flue gas of generation is then into the regenerator Jing and the storage of the second burner 22 of the second burner 22
4 ' of oxidant service and the flue 9 connected with 4 ' of oxidant service of hot cell connection is discharged.Now open
137 ' of 147 ' of stop valve and regulating valve on 7 ' of nitrogen service connected with the second burner 22, with the combustion to the second burner 22
Nitrogen is passed through in airway, so as to prevent the flue gas in burner hearth 1 from entering in the gas conduct pipe of the second burner 22.Commutate through one
After cycle (60-180 seconds), the stop valve 143 closed on the first fuel gas supply pipeline 3 connected with the first burner 21, to stop
Combustion gas is passed through to the first burner 21, stop valve 147 and regulating valve on the nitrogen service 7 connected with the first burner 21 is opened
137, to be passed through nitrogen to the first burner 21, the stop valve 146 closed on oxygen feeding pipe road 6, to stop to the first burner 21
It is passed through oxygen.After 4 seconds, four-way change-over valve 8 is adjusted so that 4 ' of oxidant service is supplied with air feed conduit 5 and oxygen
Pipeline 6 is connected, is not connected with flue 9, and oxidant service 4 connect with flue 9, and air feed conduit 5
And oxygen feeding pipe road 6 is not connected, now the first burner 21 is transformed to burner of discharging fume, and the second burner 22 is transformed to burning and burns
Mouth.After 6 seconds, the stop valve 146 on oxygen feeding pipe road 6 is opened, to be passed through oxygen to the second burner 22, now, air and oxygen
It is passed through in the accumulation of heat room of the second burner 22 by 4 ' of mixed gas pipeline after gas mixing.The nitrogen that closing is connected with the second burner 22 is supplied
To 137 ' of 147 ' of stop valve and regulating valve on 7 ' of pipeline, to stop being passed through nitrogen to the second burner 22, open and the second burner
133 ' of 143 ' of stop valve and regulating valve on first fuel gas supply pipeline, 3 ' of 22 connections, to be passed through combustion gas to the second burner 22.
After another commutation cycle, 8 automatic reverse of four-way change-over valve, and perform the operation contrary with above-mentioned steps.By four
8 automatic reverse of logical reversal valve, may be repeated above-mentioned steps, so as to realize the working condition of the first burner 21 and the second burner 22
Automatic conversion, and then the heat of flue gas that burning is produced is made full use of, improves heat utilization efficiency.
The air feed conduit 5 of the present embodiment is preferred for being passed through compressed air.
To sum up, the thermal storage type oxygen-enriched combustion apparatus of the present embodiment, are provided with the nitrogen supply connected with the gas conduct pipe of burner
Pipeline, after the working condition of burner is shifted to smoke evacuation by burning, into the gas conduct pipe of the burner can be passed through nitrogen, which is carried out
Nitrogen is purged, and combustion gas therein is all blown in burner hearth and is burnt, so as to ensure the safety of whole combustion process;
It is when the working condition of burner is to discharge fume, then sustainable to be passed through nitrogen thereto, high-temperature flue gas thus can be prevented to enter smoke evacuation burner
Gas conduct pipe in, and cooling is played a part of to gas conduct pipe, so as to protect gas conduct pipe not receive high-temperature flue gas scaling loss.
Finally it should be noted that:Above example only to illustrate the technical solution of the utility model, rather than a limitation;
Although being described in detail to this utility model with reference to the foregoing embodiments, it will be understood by those within the art that:
Which still can be modified to the technical scheme described in foregoing embodiments, or which part technical characteristic is carried out etc.
With replacement;And these modifications or replacement, do not make the essence of appropriate technical solution depart from each embodiment technology of this utility model
The spirit and scope of scheme.